From c031dcf6412d65c4f8cb989b4e2c858c3664be8d Mon Sep 17 00:00:00 2001 From: Anup Patel Date: Mon, 4 Jul 2011 19:35:16 +0530 Subject: [PATCH] Initial code for ARM7a port. Signed-off-by: Anup Patel --- ports/arm7a/Doxyfile | 1161 ++++++++++++++++++++++++++++++++ ports/arm7a/Makefile | 156 +++++ ports/arm7a/arm_config.h | 147 ++++ ports/arm7a/arm_entry.s | 212 ++++++ ports/arm7a/arm_gic.c | 208 ++++++ ports/arm7a/arm_gic.h | 62 ++ ports/arm7a/arm_io.h | 45 ++ ports/arm7a/arm_irq.c | 151 +++++ ports/arm7a/arm_irq.h | 55 ++ ports/arm7a/arm_main.c | 238 +++++++ ports/arm7a/arm_plat.h | 287 ++++++++ ports/arm7a/arm_timer.c | 102 +++ ports/arm7a/arm_timer.h | 56 ++ ports/arm7a/arm_uart.c | 112 +++ ports/arm7a/arm_uart.h | 110 +++ ports/arm7a/atomport-asm.s | 58 ++ ports/arm7a/atomport-private.h | 53 ++ ports/arm7a/atomport-tests.h | 48 ++ ports/arm7a/atomport.c | 58 ++ ports/arm7a/atomport.h | 110 +++ ports/arm7a/linker.ld | 138 ++++ ports/arm7a/printk.c | 59 ++ ports/arm7a/printk.h | 42 ++ ports/arm7a/stdarg.h | 28 + ports/arm7a/string.c | 61 ++ ports/arm7a/string.h | 42 ++ ports/arm7a/system.h | 52 ++ ports/arm7a/vsprintf.c | 244 +++++++ 28 files changed, 4095 insertions(+) create mode 100644 ports/arm7a/Doxyfile create mode 100644 ports/arm7a/Makefile create mode 100644 ports/arm7a/arm_config.h create mode 100644 ports/arm7a/arm_entry.s create mode 100644 ports/arm7a/arm_gic.c create mode 100644 ports/arm7a/arm_gic.h create mode 100644 ports/arm7a/arm_io.h create mode 100644 ports/arm7a/arm_irq.c create mode 100644 ports/arm7a/arm_irq.h create mode 100644 ports/arm7a/arm_main.c create mode 100644 ports/arm7a/arm_plat.h create mode 100644 ports/arm7a/arm_timer.c create mode 100644 ports/arm7a/arm_timer.h create mode 100644 ports/arm7a/arm_uart.c create mode 100644 ports/arm7a/arm_uart.h create mode 100644 ports/arm7a/atomport-asm.s create mode 100644 ports/arm7a/atomport-private.h create mode 100644 ports/arm7a/atomport-tests.h create mode 100644 ports/arm7a/atomport.c create mode 100644 ports/arm7a/atomport.h create mode 100755 ports/arm7a/linker.ld create mode 100644 ports/arm7a/printk.c create mode 100644 ports/arm7a/printk.h create mode 100755 ports/arm7a/stdarg.h create mode 100644 ports/arm7a/string.c create mode 100644 ports/arm7a/string.h create mode 100644 ports/arm7a/system.h create mode 100644 ports/arm7a/vsprintf.c diff --git a/ports/arm7a/Doxyfile b/ports/arm7a/Doxyfile new file mode 100644 index 0000000..e6f6571 --- /dev/null +++ b/ports/arm7a/Doxyfile @@ -0,0 +1,1161 @@ +# Doxyfile 1.3.9.1 + +# This file describes the settings to be used by the documentation system +# doxygen (www.doxygen.org) for a project +# +# All text after a hash (#) is considered a comment and will be ignored +# The format is: +# TAG = value [value, ...] +# For lists items can also be appended using: +# TAG += value [value, ...] +# Values that contain spaces should be placed between quotes (" ") + +#--------------------------------------------------------------------------- +# Project related configuration options +#--------------------------------------------------------------------------- + +# The PROJECT_NAME tag is a single word (or a sequence of words surrounded +# by quotes) that should identify the project. + +PROJECT_NAME = atomthreads + +# The PROJECT_NUMBER tag can be used to enter a project or revision number. +# This could be handy for archiving the generated documentation or +# if some version control system is used. + +PROJECT_NUMBER = + +# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) +# base path where the generated documentation will be put. +# If a relative path is entered, it will be relative to the location +# where doxygen was started. If left blank the current directory will be used. + +OUTPUT_DIRECTORY = doxygen-avr + +# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create +# 4096 sub-directories (in 2 levels) under the output directory of each output +# format and will distribute the generated files over these directories. +# Enabling this option can be useful when feeding doxygen a huge amount of source +# files, where putting all generated files in the same directory would otherwise +# cause performance problems for the file system. + +CREATE_SUBDIRS = NO + +# The OUTPUT_LANGUAGE tag is used to specify the language in which all +# documentation generated by doxygen is written. Doxygen will use this +# information to generate all constant output in the proper language. +# The default language is English, other supported languages are: +# Brazilian, Catalan, Chinese, Chinese-Traditional, Croatian, Czech, Danish, +# Dutch, Finnish, French, German, Greek, Hungarian, Italian, Japanese, +# Japanese-en (Japanese with English messages), Korean, Korean-en, Norwegian, +# Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovene, Spanish, +# Swedish, and Ukrainian. + +OUTPUT_LANGUAGE = English + +# This tag can be used to specify the encoding used in the generated output. +# The encoding is not always determined by the language that is chosen, +# but also whether or not the output is meant for Windows or non-Windows users. +# In case there is a difference, setting the USE_WINDOWS_ENCODING tag to YES +# forces the Windows encoding (this is the default for the Windows binary), +# whereas setting the tag to NO uses a Unix-style encoding (the default for +# all platforms other than Windows). + +USE_WINDOWS_ENCODING = NO + +# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will +# include brief member descriptions after the members that are listed in +# the file and class documentation (similar to JavaDoc). +# Set to NO to disable this. + +BRIEF_MEMBER_DESC = YES + +# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend +# the brief description of a member or function before the detailed description. +# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the +# brief descriptions will be completely suppressed. + +REPEAT_BRIEF = YES + +# This tag implements a quasi-intelligent brief description abbreviator +# that is used to form the text in various listings. Each string +# in this list, if found as the leading text of the brief description, will be +# stripped from the text and the result after processing the whole list, is used +# as the annotated text. Otherwise, the brief description is used as-is. If left +# blank, the following values are used ("$name" is automatically replaced with the +# name of the entity): "The $name class" "The $name widget" "The $name file" +# "is" "provides" "specifies" "contains" "represents" "a" "an" "the" + +ABBREVIATE_BRIEF = + +# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then +# Doxygen will generate a detailed section even if there is only a brief +# description. + +ALWAYS_DETAILED_SEC = NO + +# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all inherited +# members of a class in the documentation of that class as if those members were +# ordinary class members. Constructors, destructors and assignment operators of +# the base classes will not be shown. + +INLINE_INHERITED_MEMB = NO + +# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full +# path before files name in the file list and in the header files. If set +# to NO the shortest path that makes the file name unique will be used. + +FULL_PATH_NAMES = YES + +# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag +# can be used to strip a user-defined part of the path. Stripping is +# only done if one of the specified strings matches the left-hand part of +# the path. The tag can be used to show relative paths in the file list. +# If left blank the directory from which doxygen is run is used as the +# path to strip. + +STRIP_FROM_PATH = + +# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of +# the path mentioned in the documentation of a class, which tells +# the reader which header file to include in order to use a class. +# If left blank only the name of the header file containing the class +# definition is used. Otherwise one should specify the include paths that +# are normally passed to the compiler using the -I flag. + +STRIP_FROM_INC_PATH = + +# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter +# (but less readable) file names. This can be useful is your file systems +# doesn't support long names like on DOS, Mac, or CD-ROM. + +SHORT_NAMES = NO + +# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen +# will interpret the first line (until the first dot) of a JavaDoc-style +# comment as the brief description. If set to NO, the JavaDoc +# comments will behave just like the Qt-style comments (thus requiring an +# explicit @brief command for a brief description. + +JAVADOC_AUTOBRIEF = NO + +# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen +# treat a multi-line C++ special comment block (i.e. a block of //! or /// +# comments) as a brief description. This used to be the default behaviour. +# The new default is to treat a multi-line C++ comment block as a detailed +# description. Set this tag to YES if you prefer the old behaviour instead. + +MULTILINE_CPP_IS_BRIEF = NO + +# If the DETAILS_AT_TOP tag is set to YES then Doxygen +# will output the detailed description near the top, like JavaDoc. +# If set to NO, the detailed description appears after the member +# documentation. + +DETAILS_AT_TOP = NO + +# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented +# member inherits the documentation from any documented member that it +# re-implements. + +INHERIT_DOCS = YES + +# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC +# tag is set to YES, then doxygen will reuse the documentation of the first +# member in the group (if any) for the other members of the group. By default +# all members of a group must be documented explicitly. + +DISTRIBUTE_GROUP_DOC = NO + +# The TAB_SIZE tag can be used to set the number of spaces in a tab. +# Doxygen uses this value to replace tabs by spaces in code fragments. + +TAB_SIZE = 4 + +# This tag can be used to specify a number of aliases that acts +# as commands in the documentation. An alias has the form "name=value". +# For example adding "sideeffect=\par Side Effects:\n" will allow you to +# put the command \sideeffect (or @sideeffect) in the documentation, which +# will result in a user-defined paragraph with heading "Side Effects:". +# You can put \n's in the value part of an alias to insert newlines. + +ALIASES = + +# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources +# only. Doxygen will then generate output that is more tailored for C. +# For instance, some of the names that are used will be different. The list +# of all members will be omitted, etc. + +OPTIMIZE_OUTPUT_FOR_C = YES + +# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java sources +# only. Doxygen will then generate output that is more tailored for Java. +# For instance, namespaces will be presented as packages, qualified scopes +# will look different, etc. + +OPTIMIZE_OUTPUT_JAVA = NO + +# Set the SUBGROUPING tag to YES (the default) to allow class member groups of +# the same type (for instance a group of public functions) to be put as a +# subgroup of that type (e.g. under the Public Functions section). Set it to +# NO to prevent subgrouping. Alternatively, this can be done per class using +# the \nosubgrouping command. + +SUBGROUPING = YES + +#--------------------------------------------------------------------------- +# Build related configuration options +#--------------------------------------------------------------------------- + +# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in +# documentation are documented, even if no documentation was available. +# Private class members and static file members will be hidden unless +# the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES + +EXTRACT_ALL = YES + +# If the EXTRACT_PRIVATE tag is set to YES all private members of a class +# will be included in the documentation. + +EXTRACT_PRIVATE = YES + +# If the EXTRACT_STATIC tag is set to YES all static members of a file +# will be included in the documentation. + +EXTRACT_STATIC = NO + +# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs) +# defined locally in source files will be included in the documentation. +# If set to NO only classes defined in header files are included. + +EXTRACT_LOCAL_CLASSES = YES + +# This flag is only useful for Objective-C code. When set to YES local +# methods, which are defined in the implementation section but not in +# the interface are included in the documentation. +# If set to NO (the default) only methods in the interface are included. + +EXTRACT_LOCAL_METHODS = NO + +# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all +# undocumented members of documented classes, files or namespaces. +# If set to NO (the default) these members will be included in the +# various overviews, but no documentation section is generated. +# This option has no effect if EXTRACT_ALL is enabled. + +HIDE_UNDOC_MEMBERS = NO + +# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all +# undocumented classes that are normally visible in the class hierarchy. +# If set to NO (the default) these classes will be included in the various +# overviews. This option has no effect if EXTRACT_ALL is enabled. + +HIDE_UNDOC_CLASSES = NO + +# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all +# friend (class|struct|union) declarations. +# If set to NO (the default) these declarations will be included in the +# documentation. + +HIDE_FRIEND_COMPOUNDS = NO + +# If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any +# documentation blocks found inside the body of a function. +# If set to NO (the default) these blocks will be appended to the +# function's detailed documentation block. + +HIDE_IN_BODY_DOCS = NO + +# The INTERNAL_DOCS tag determines if documentation +# that is typed after a \internal command is included. If the tag is set +# to NO (the default) then the documentation will be excluded. +# Set it to YES to include the internal documentation. + +INTERNAL_DOCS = NO + +# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate +# file names in lower-case letters. If set to YES upper-case letters are also +# allowed. This is useful if you have classes or files whose names only differ +# in case and if your file system supports case sensitive file names. Windows +# and Mac users are advised to set this option to NO. + +CASE_SENSE_NAMES = YES + +# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen +# will show members with their full class and namespace scopes in the +# documentation. If set to YES the scope will be hidden. + +HIDE_SCOPE_NAMES = NO + +# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen +# will put a list of the files that are included by a file in the documentation +# of that file. + +SHOW_INCLUDE_FILES = YES + +# If the INLINE_INFO tag is set to YES (the default) then a tag [inline] +# is inserted in the documentation for inline members. + +INLINE_INFO = YES + +# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen +# will sort the (detailed) documentation of file and class members +# alphabetically by member name. If set to NO the members will appear in +# declaration order. + +SORT_MEMBER_DOCS = YES + +# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the +# brief documentation of file, namespace and class members alphabetically +# by member name. If set to NO (the default) the members will appear in +# declaration order. + +SORT_BRIEF_DOCS = NO + +# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be +# sorted by fully-qualified names, including namespaces. If set to +# NO (the default), the class list will be sorted only by class name, +# not including the namespace part. +# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES. +# Note: This option applies only to the class list, not to the +# alphabetical list. + +SORT_BY_SCOPE_NAME = NO + +# The GENERATE_TODOLIST tag can be used to enable (YES) or +# disable (NO) the todo list. This list is created by putting \todo +# commands in the documentation. + +GENERATE_TODOLIST = YES + +# The GENERATE_TESTLIST tag can be used to enable (YES) or +# disable (NO) the test list. This list is created by putting \test +# commands in the documentation. + +GENERATE_TESTLIST = YES + +# The GENERATE_BUGLIST tag can be used to enable (YES) or +# disable (NO) the bug list. This list is created by putting \bug +# commands in the documentation. + +GENERATE_BUGLIST = YES + +# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or +# disable (NO) the deprecated list. This list is created by putting +# \deprecated commands in the documentation. + +GENERATE_DEPRECATEDLIST= YES + +# The ENABLED_SECTIONS tag can be used to enable conditional +# documentation sections, marked by \if sectionname ... \endif. + +ENABLED_SECTIONS = + +# The MAX_INITIALIZER_LINES tag determines the maximum number of lines +# the initial value of a variable or define consists of for it to appear in +# the documentation. If the initializer consists of more lines than specified +# here it will be hidden. Use a value of 0 to hide initializers completely. +# The appearance of the initializer of individual variables and defines in the +# documentation can be controlled using \showinitializer or \hideinitializer +# command in the documentation regardless of this setting. + +MAX_INITIALIZER_LINES = 30 + +# Set the SHOW_USED_FILES tag to NO to disable the list of files generated +# at the bottom of the documentation of classes and structs. If set to YES the +# list will mention the files that were used to generate the documentation. + +SHOW_USED_FILES = YES + +# If the sources in your project are distributed over multiple directories +# then setting the SHOW_DIRECTORIES tag to YES will show the directory hierarchy +# in the documentation. + +SHOW_DIRECTORIES = YES + +#--------------------------------------------------------------------------- +# configuration options related to warning and progress messages +#--------------------------------------------------------------------------- + +# The QUIET tag can be used to turn on/off the messages that are generated +# by doxygen. Possible values are YES and NO. If left blank NO is used. + +QUIET = NO + +# The WARNINGS tag can be used to turn on/off the warning messages that are +# generated by doxygen. Possible values are YES and NO. If left blank +# NO is used. + +WARNINGS = YES + +# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings +# for undocumented members. If EXTRACT_ALL is set to YES then this flag will +# automatically be disabled. + +WARN_IF_UNDOCUMENTED = YES + +# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for +# potential errors in the documentation, such as not documenting some +# parameters in a documented function, or documenting parameters that +# don't exist or using markup commands wrongly. + +WARN_IF_DOC_ERROR = YES + +# The WARN_FORMAT tag determines the format of the warning messages that +# doxygen can produce. The string should contain the $file, $line, and $text +# tags, which will be replaced by the file and line number from which the +# warning originated and the warning text. + +WARN_FORMAT = "$file:$line: $text" + +# The WARN_LOGFILE tag can be used to specify a file to which warning +# and error messages should be written. If left blank the output is written +# to stderr. + +WARN_LOGFILE = + +#--------------------------------------------------------------------------- +# configuration options related to the input files +#--------------------------------------------------------------------------- + +# The INPUT tag can be used to specify the files and/or directories that contain +# documented source files. You may enter file names like "myfile.cpp" or +# directories like "/usr/src/myproject". Separate the files or directories +# with spaces. + +INPUT = + +# If the value of the INPUT tag contains directories, you can use the +# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp +# and *.h) to filter out the source-files in the directories. If left +# blank the following patterns are tested: +# *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx *.hpp +# *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm + +FILE_PATTERNS = + +# The RECURSIVE tag can be used to turn specify whether or not subdirectories +# should be searched for input files as well. Possible values are YES and NO. +# If left blank NO is used. + +RECURSIVE = NO + +# The EXCLUDE tag can be used to specify files and/or directories that should +# excluded from the INPUT source files. This way you can easily exclude a +# subdirectory from a directory tree whose root is specified with the INPUT tag. + +EXCLUDE = + +# The EXCLUDE_SYMLINKS tag can be used select whether or not files or directories +# that are symbolic links (a Unix filesystem feature) are excluded from the input. + +EXCLUDE_SYMLINKS = NO + +# If the value of the INPUT tag contains directories, you can use the +# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude +# certain files from those directories. + +EXCLUDE_PATTERNS = + +# The EXAMPLE_PATH tag can be used to specify one or more files or +# directories that contain example code fragments that are included (see +# the \include command). + +EXAMPLE_PATH = + +# If the value of the EXAMPLE_PATH tag contains directories, you can use the +# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp +# and *.h) to filter out the source-files in the directories. If left +# blank all files are included. + +EXAMPLE_PATTERNS = + +# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be +# searched for input files to be used with the \include or \dontinclude +# commands irrespective of the value of the RECURSIVE tag. +# Possible values are YES and NO. If left blank NO is used. + +EXAMPLE_RECURSIVE = NO + +# The IMAGE_PATH tag can be used to specify one or more files or +# directories that contain image that are included in the documentation (see +# the \image command). + +IMAGE_PATH = + +# The INPUT_FILTER tag can be used to specify a program that doxygen should +# invoke to filter for each input file. Doxygen will invoke the filter program +# by executing (via popen()) the command , where +# is the value of the INPUT_FILTER tag, and is the name of an +# input file. Doxygen will then use the output that the filter program writes +# to standard output. If FILTER_PATTERNS is specified, this tag will be +# ignored. + +INPUT_FILTER = + +# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern +# basis. Doxygen will compare the file name with each pattern and apply the +# filter if there is a match. The filters are a list of the form: +# pattern=filter (like *.cpp=my_cpp_filter). See INPUT_FILTER for further +# info on how filters are used. If FILTER_PATTERNS is empty, INPUT_FILTER +# is applied to all files. + +FILTER_PATTERNS = + +# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using +# INPUT_FILTER) will be used to filter the input files when producing source +# files to browse (i.e. when SOURCE_BROWSER is set to YES). + +FILTER_SOURCE_FILES = NO + +#--------------------------------------------------------------------------- +# configuration options related to source browsing +#--------------------------------------------------------------------------- + +# If the SOURCE_BROWSER tag is set to YES then a list of source files will +# be generated. Documented entities will be cross-referenced with these sources. +# Note: To get rid of all source code in the generated output, make sure also +# VERBATIM_HEADERS is set to NO. + +SOURCE_BROWSER = NO + +# Setting the INLINE_SOURCES tag to YES will include the body +# of functions and classes directly in the documentation. + +INLINE_SOURCES = NO + +# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct +# doxygen to hide any special comment blocks from generated source code +# fragments. Normal C and C++ comments will always remain visible. + +STRIP_CODE_COMMENTS = YES + +# If the REFERENCED_BY_RELATION tag is set to YES (the default) +# then for each documented function all documented +# functions referencing it will be listed. + +REFERENCED_BY_RELATION = YES + +# If the REFERENCES_RELATION tag is set to YES (the default) +# then for each documented function all documented entities +# called/used by that function will be listed. + +REFERENCES_RELATION = YES + +# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen +# will generate a verbatim copy of the header file for each class for +# which an include is specified. Set to NO to disable this. + +VERBATIM_HEADERS = YES + +#--------------------------------------------------------------------------- +# configuration options related to the alphabetical class index +#--------------------------------------------------------------------------- + +# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index +# of all compounds will be generated. Enable this if the project +# contains a lot of classes, structs, unions or interfaces. + +ALPHABETICAL_INDEX = NO + +# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then +# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns +# in which this list will be split (can be a number in the range [1..20]) + +COLS_IN_ALPHA_INDEX = 5 + +# In case all classes in a project start with a common prefix, all +# classes will be put under the same header in the alphabetical index. +# The IGNORE_PREFIX tag can be used to specify one or more prefixes that +# should be ignored while generating the index headers. + +IGNORE_PREFIX = + +#--------------------------------------------------------------------------- +# configuration options related to the HTML output +#--------------------------------------------------------------------------- + +# If the GENERATE_HTML tag is set to YES (the default) Doxygen will +# generate HTML output. + +GENERATE_HTML = YES + +# The HTML_OUTPUT tag is used to specify where the HTML docs will be put. +# If a relative path is entered the value of OUTPUT_DIRECTORY will be +# put in front of it. If left blank `html' will be used as the default path. + +HTML_OUTPUT = html + +# The HTML_FILE_EXTENSION tag can be used to specify the file extension for +# each generated HTML page (for example: .htm,.php,.asp). If it is left blank +# doxygen will generate files with .html extension. + +HTML_FILE_EXTENSION = .html + +# The HTML_HEADER tag can be used to specify a personal HTML header for +# each generated HTML page. If it is left blank doxygen will generate a +# standard header. + +HTML_HEADER = + +# The HTML_FOOTER tag can be used to specify a personal HTML footer for +# each generated HTML page. If it is left blank doxygen will generate a +# standard footer. + +HTML_FOOTER = + +# The HTML_STYLESHEET tag can be used to specify a user-defined cascading +# style sheet that is used by each HTML page. It can be used to +# fine-tune the look of the HTML output. If the tag is left blank doxygen +# will generate a default style sheet. Note that doxygen will try to copy +# the style sheet file to the HTML output directory, so don't put your own +# stylesheet in the HTML output directory as well, or it will be erased! + +HTML_STYLESHEET = + +# If the HTML_ALIGN_MEMBERS tag is set to YES, the members of classes, +# files or namespaces will be aligned in HTML using tables. If set to +# NO a bullet list will be used. + +HTML_ALIGN_MEMBERS = YES + +# If the GENERATE_HTMLHELP tag is set to YES, additional index files +# will be generated that can be used as input for tools like the +# Microsoft HTML help workshop to generate a compressed HTML help file (.chm) +# of the generated HTML documentation. + +GENERATE_HTMLHELP = NO + +# If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can +# be used to specify the file name of the resulting .chm file. You +# can add a path in front of the file if the result should not be +# written to the html output directory. + +CHM_FILE = + +# If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can +# be used to specify the location (absolute path including file name) of +# the HTML help compiler (hhc.exe). If non-empty doxygen will try to run +# the HTML help compiler on the generated index.hhp. + +HHC_LOCATION = + +# If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag +# controls if a separate .chi index file is generated (YES) or that +# it should be included in the master .chm file (NO). + +GENERATE_CHI = NO + +# If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag +# controls whether a binary table of contents is generated (YES) or a +# normal table of contents (NO) in the .chm file. + +BINARY_TOC = NO + +# The TOC_EXPAND flag can be set to YES to add extra items for group members +# to the contents of the HTML help documentation and to the tree view. + +TOC_EXPAND = NO + +# The DISABLE_INDEX tag can be used to turn on/off the condensed index at +# top of each HTML page. The value NO (the default) enables the index and +# the value YES disables it. + +DISABLE_INDEX = NO + +# This tag can be used to set the number of enum values (range [1..20]) +# that doxygen will group on one line in the generated HTML documentation. + +ENUM_VALUES_PER_LINE = 4 + +# If the GENERATE_TREEVIEW tag is set to YES, a side panel will be +# generated containing a tree-like index structure (just like the one that +# is generated for HTML Help). For this to work a browser that supports +# JavaScript, DHTML, CSS and frames is required (for instance Mozilla 1.0+, +# Netscape 6.0+, Internet explorer 5.0+, or Konqueror). Windows users are +# probably better off using the HTML help feature. + +GENERATE_TREEVIEW = NO + +# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be +# used to set the initial width (in pixels) of the frame in which the tree +# is shown. + +TREEVIEW_WIDTH = 250 + +#--------------------------------------------------------------------------- +# configuration options related to the LaTeX output +#--------------------------------------------------------------------------- + +# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will +# generate Latex output. + +GENERATE_LATEX = NO + +# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. +# If a relative path is entered the value of OUTPUT_DIRECTORY will be +# put in front of it. If left blank `latex' will be used as the default path. + +LATEX_OUTPUT = latex + +# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be +# invoked. If left blank `latex' will be used as the default command name. + +LATEX_CMD_NAME = latex + +# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to +# generate index for LaTeX. If left blank `makeindex' will be used as the +# default command name. + +MAKEINDEX_CMD_NAME = makeindex + +# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact +# LaTeX documents. This may be useful for small projects and may help to +# save some trees in general. + +COMPACT_LATEX = NO + +# The PAPER_TYPE tag can be used to set the paper type that is used +# by the printer. Possible values are: a4, a4wide, letter, legal and +# executive. If left blank a4wide will be used. + +PAPER_TYPE = a4wide + +# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX +# packages that should be included in the LaTeX output. + +EXTRA_PACKAGES = + +# The LATEX_HEADER tag can be used to specify a personal LaTeX header for +# the generated latex document. The header should contain everything until +# the first chapter. If it is left blank doxygen will generate a +# standard header. Notice: only use this tag if you know what you are doing! + +LATEX_HEADER = + +# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated +# is prepared for conversion to pdf (using ps2pdf). The pdf file will +# contain links (just like the HTML output) instead of page references +# This makes the output suitable for online browsing using a pdf viewer. + +PDF_HYPERLINKS = NO + +# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of +# plain latex in the generated Makefile. Set this option to YES to get a +# higher quality PDF documentation. + +USE_PDFLATEX = NO + +# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode. +# command to the generated LaTeX files. This will instruct LaTeX to keep +# running if errors occur, instead of asking the user for help. +# This option is also used when generating formulas in HTML. + +LATEX_BATCHMODE = NO + +# If LATEX_HIDE_INDICES is set to YES then doxygen will not +# include the index chapters (such as File Index, Compound Index, etc.) +# in the output. + +LATEX_HIDE_INDICES = NO + +#--------------------------------------------------------------------------- +# configuration options related to the RTF output +#--------------------------------------------------------------------------- + +# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output +# The RTF output is optimized for Word 97 and may not look very pretty with +# other RTF readers or editors. + +GENERATE_RTF = NO + +# The RTF_OUTPUT tag is used to specify where the RTF docs will be put. +# If a relative path is entered the value of OUTPUT_DIRECTORY will be +# put in front of it. If left blank `rtf' will be used as the default path. + +RTF_OUTPUT = rtf + +# If the COMPACT_RTF tag is set to YES Doxygen generates more compact +# RTF documents. This may be useful for small projects and may help to +# save some trees in general. + +COMPACT_RTF = NO + +# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated +# will contain hyperlink fields. The RTF file will +# contain links (just like the HTML output) instead of page references. +# This makes the output suitable for online browsing using WORD or other +# programs which support those fields. +# Note: wordpad (write) and others do not support links. + +RTF_HYPERLINKS = NO + +# Load stylesheet definitions from file. Syntax is similar to doxygen's +# config file, i.e. a series of assignments. You only have to provide +# replacements, missing definitions are set to their default value. + +RTF_STYLESHEET_FILE = + +# Set optional variables used in the generation of an rtf document. +# Syntax is similar to doxygen's config file. + +RTF_EXTENSIONS_FILE = + +#--------------------------------------------------------------------------- +# configuration options related to the man page output +#--------------------------------------------------------------------------- + +# If the GENERATE_MAN tag is set to YES (the default) Doxygen will +# generate man pages + +GENERATE_MAN = NO + +# The MAN_OUTPUT tag is used to specify where the man pages will be put. +# If a relative path is entered the value of OUTPUT_DIRECTORY will be +# put in front of it. If left blank `man' will be used as the default path. + +MAN_OUTPUT = man + +# The MAN_EXTENSION tag determines the extension that is added to +# the generated man pages (default is the subroutine's section .3) + +MAN_EXTENSION = .3 + +# If the MAN_LINKS tag is set to YES and Doxygen generates man output, +# then it will generate one additional man file for each entity +# documented in the real man page(s). These additional files +# only source the real man page, but without them the man command +# would be unable to find the correct page. The default is NO. + +MAN_LINKS = NO + +#--------------------------------------------------------------------------- +# configuration options related to the XML output +#--------------------------------------------------------------------------- + +# If the GENERATE_XML tag is set to YES Doxygen will +# generate an XML file that captures the structure of +# the code including all documentation. + +GENERATE_XML = NO + +# The XML_OUTPUT tag is used to specify where the XML pages will be put. +# If a relative path is entered the value of OUTPUT_DIRECTORY will be +# put in front of it. If left blank `xml' will be used as the default path. + +XML_OUTPUT = xml + +# The XML_SCHEMA tag can be used to specify an XML schema, +# which can be used by a validating XML parser to check the +# syntax of the XML files. + +XML_SCHEMA = + +# The XML_DTD tag can be used to specify an XML DTD, +# which can be used by a validating XML parser to check the +# syntax of the XML files. + +XML_DTD = + +# If the XML_PROGRAMLISTING tag is set to YES Doxygen will +# dump the program listings (including syntax highlighting +# and cross-referencing information) to the XML output. Note that +# enabling this will significantly increase the size of the XML output. + +XML_PROGRAMLISTING = YES + +#--------------------------------------------------------------------------- +# configuration options for the AutoGen Definitions output +#--------------------------------------------------------------------------- + +# If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will +# generate an AutoGen Definitions (see autogen.sf.net) file +# that captures the structure of the code including all +# documentation. Note that this feature is still experimental +# and incomplete at the moment. + +GENERATE_AUTOGEN_DEF = NO + +#--------------------------------------------------------------------------- +# configuration options related to the Perl module output +#--------------------------------------------------------------------------- + +# If the GENERATE_PERLMOD tag is set to YES Doxygen will +# generate a Perl module file that captures the structure of +# the code including all documentation. Note that this +# feature is still experimental and incomplete at the +# moment. + +GENERATE_PERLMOD = NO + +# If the PERLMOD_LATEX tag is set to YES Doxygen will generate +# the necessary Makefile rules, Perl scripts and LaTeX code to be able +# to generate PDF and DVI output from the Perl module output. + +PERLMOD_LATEX = NO + +# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be +# nicely formatted so it can be parsed by a human reader. This is useful +# if you want to understand what is going on. On the other hand, if this +# tag is set to NO the size of the Perl module output will be much smaller +# and Perl will parse it just the same. + +PERLMOD_PRETTY = YES + +# The names of the make variables in the generated doxyrules.make file +# are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX. +# This is useful so different doxyrules.make files included by the same +# Makefile don't overwrite each other's variables. + +PERLMOD_MAKEVAR_PREFIX = + +#--------------------------------------------------------------------------- +# Configuration options related to the preprocessor +#--------------------------------------------------------------------------- + +# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will +# evaluate all C-preprocessor directives found in the sources and include +# files. + +ENABLE_PREPROCESSING = YES + +# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro +# names in the source code. If set to NO (the default) only conditional +# compilation will be performed. Macro expansion can be done in a controlled +# way by setting EXPAND_ONLY_PREDEF to YES. + +MACRO_EXPANSION = NO + +# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES +# then the macro expansion is limited to the macros specified with the +# PREDEFINED and EXPAND_AS_PREDEFINED tags. + +EXPAND_ONLY_PREDEF = NO + +# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files +# in the INCLUDE_PATH (see below) will be search if a #include is found. + +SEARCH_INCLUDES = YES + +# The INCLUDE_PATH tag can be used to specify one or more directories that +# contain include files that are not input files but should be processed by +# the preprocessor. + +INCLUDE_PATH = + +# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard +# patterns (like *.h and *.hpp) to filter out the header-files in the +# directories. If left blank, the patterns specified with FILE_PATTERNS will +# be used. + +INCLUDE_FILE_PATTERNS = + +# The PREDEFINED tag can be used to specify one or more macro names that +# are defined before the preprocessor is started (similar to the -D option of +# gcc). The argument of the tag is a list of macros of the form: name +# or name=definition (no spaces). If the definition and the = are +# omitted =1 is assumed. To prevent a macro definition from being +# undefined via #undef or recursively expanded use the := operator +# instead of the = operator. + +PREDEFINED = + +# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then +# this tag can be used to specify a list of macro names that should be expanded. +# The macro definition that is found in the sources will be used. +# Use the PREDEFINED tag if you want to use a different macro definition. + +EXPAND_AS_DEFINED = + +# If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then +# doxygen's preprocessor will remove all function-like macros that are alone +# on a line, have an all uppercase name, and do not end with a semicolon. Such +# function macros are typically used for boiler-plate code, and will confuse the +# parser if not removed. + +SKIP_FUNCTION_MACROS = YES + +#--------------------------------------------------------------------------- +# Configuration::additions related to external references +#--------------------------------------------------------------------------- + +# The TAGFILES option can be used to specify one or more tagfiles. +# Optionally an initial location of the external documentation +# can be added for each tagfile. The format of a tag file without +# this location is as follows: +# TAGFILES = file1 file2 ... +# Adding location for the tag files is done as follows: +# TAGFILES = file1=loc1 "file2 = loc2" ... +# where "loc1" and "loc2" can be relative or absolute paths or +# URLs. If a location is present for each tag, the installdox tool +# does not have to be run to correct the links. +# Note that each tag file must have a unique name +# (where the name does NOT include the path) +# If a tag file is not located in the directory in which doxygen +# is run, you must also specify the path to the tagfile here. + +TAGFILES = + +# When a file name is specified after GENERATE_TAGFILE, doxygen will create +# a tag file that is based on the input files it reads. + +GENERATE_TAGFILE = + +# If the ALLEXTERNALS tag is set to YES all external classes will be listed +# in the class index. If set to NO only the inherited external classes +# will be listed. + +ALLEXTERNALS = NO + +# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed +# in the modules index. If set to NO, only the current project's groups will +# be listed. + +EXTERNAL_GROUPS = YES + +# The PERL_PATH should be the absolute path and name of the perl script +# interpreter (i.e. the result of `which perl'). + +PERL_PATH = /usr/bin/perl + +#--------------------------------------------------------------------------- +# Configuration options related to the dot tool +#--------------------------------------------------------------------------- + +# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will +# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base or +# super classes. Setting the tag to NO turns the diagrams off. Note that this +# option is superseded by the HAVE_DOT option below. This is only a fallback. It is +# recommended to install and use dot, since it yields more powerful graphs. + +CLASS_DIAGRAMS = YES + +# If set to YES, the inheritance and collaboration graphs will hide +# inheritance and usage relations if the target is undocumented +# or is not a class. + +HIDE_UNDOC_RELATIONS = YES + +# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is +# available from the path. This tool is part of Graphviz, a graph visualization +# toolkit from AT&T and Lucent Bell Labs. The other options in this section +# have no effect if this option is set to NO (the default) + +HAVE_DOT = NO + +# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen +# will generate a graph for each documented class showing the direct and +# indirect inheritance relations. Setting this tag to YES will force the +# the CLASS_DIAGRAMS tag to NO. + +CLASS_GRAPH = YES + +# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen +# will generate a graph for each documented class showing the direct and +# indirect implementation dependencies (inheritance, containment, and +# class references variables) of the class with other documented classes. + +COLLABORATION_GRAPH = YES + +# If the UML_LOOK tag is set to YES doxygen will generate inheritance and +# collaboration diagrams in a style similar to the OMG's Unified Modeling +# Language. + +UML_LOOK = NO + +# If set to YES, the inheritance and collaboration graphs will show the +# relations between templates and their instances. + +TEMPLATE_RELATIONS = NO + +# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDE_GRAPH, and HAVE_DOT +# tags are set to YES then doxygen will generate a graph for each documented +# file showing the direct and indirect include dependencies of the file with +# other documented files. + +INCLUDE_GRAPH = YES + +# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDED_BY_GRAPH, and +# HAVE_DOT tags are set to YES then doxygen will generate a graph for each +# documented header file showing the documented files that directly or +# indirectly include this file. + +INCLUDED_BY_GRAPH = YES + +# If the CALL_GRAPH and HAVE_DOT tags are set to YES then doxygen will +# generate a call dependency graph for every global function or class method. +# Note that enabling this option will significantly increase the time of a run. +# So in most cases it will be better to enable call graphs for selected +# functions only using the \callgraph command. + +CALL_GRAPH = NO + +# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen +# will graphical hierarchy of all classes instead of a textual one. + +GRAPHICAL_HIERARCHY = YES + +# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images +# generated by dot. Possible values are png, jpg, or gif +# If left blank png will be used. + +DOT_IMAGE_FORMAT = png + +# The tag DOT_PATH can be used to specify the path where the dot tool can be +# found. If left blank, it is assumed the dot tool can be found on the path. + +DOT_PATH = + +# The DOTFILE_DIRS tag can be used to specify one or more directories that +# contain dot files that are included in the documentation (see the +# \dotfile command). + +DOTFILE_DIRS = + +# The MAX_DOT_GRAPH_WIDTH tag can be used to set the maximum allowed width +# (in pixels) of the graphs generated by dot. If a graph becomes larger than +# this value, doxygen will try to truncate the graph, so that it fits within +# the specified constraint. Beware that most browsers cannot cope with very +# large images. + +MAX_DOT_GRAPH_WIDTH = 1024 + +# The MAX_DOT_GRAPH_HEIGHT tag can be used to set the maximum allows height +# (in pixels) of the graphs generated by dot. If a graph becomes larger than +# this value, doxygen will try to truncate the graph, so that it fits within +# the specified constraint. Beware that most browsers cannot cope with very +# large images. + +MAX_DOT_GRAPH_HEIGHT = 1024 + +# The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the +# graphs generated by dot. A depth value of 3 means that only nodes reachable +# from the root by following a path via at most 3 edges will be shown. Nodes that +# lay further from the root node will be omitted. Note that setting this option to +# 1 or 2 may greatly reduce the computation time needed for large code bases. Also +# note that a graph may be further truncated if the graph's image dimensions are +# not sufficient to fit the graph (see MAX_DOT_GRAPH_WIDTH and MAX_DOT_GRAPH_HEIGHT). +# If 0 is used for the depth value (the default), the graph is not depth-constrained. + +MAX_DOT_GRAPH_DEPTH = 0 + +# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will +# generate a legend page explaining the meaning of the various boxes and +# arrows in the dot generated graphs. + +GENERATE_LEGEND = YES + +# If the DOT_CLEANUP tag is set to YES (the default) Doxygen will +# remove the intermediate dot files that are used to generate +# the various graphs. + +DOT_CLEANUP = YES + +#--------------------------------------------------------------------------- +# Configuration::additions related to the search engine +#--------------------------------------------------------------------------- + +# The SEARCHENGINE tag specifies whether or not a search engine should be +# used. If set to NO the values of all tags below this one will be ignored. + +SEARCHENGINE = NO diff --git a/ports/arm7a/Makefile b/ports/arm7a/Makefile new file mode 100644 index 0000000..db3f78d --- /dev/null +++ b/ports/arm7a/Makefile @@ -0,0 +1,156 @@ +############ +# Settings # +############ + +# Build all test applications: +# make +# +# Program a test application using UISP (appname => test app e.g. sems1): +# make program app=appname + +# Location of build tools and atomthreads sources +KERNEL_DIR=../../kernel +TESTS_DIR=../../tests + +CPU=cortex-a8 +BOARD=pb-a8 +CC=$(CROSS_COMPILE)gcc +OBJCOPY=$(CROSS_COMPILE)objcopy + +# Check if verbosity is ON for build process +VERBOSE_DEFAULT := 0 +CMD_PREFIX_DEFAULT := @ +ifdef VERBOSE + ifeq ("$(origin VERBOSE)", "command line") + VB := $(VERBOSE) + else + VB := $(VERBOSE_DEFAULT) + endif +else + VB := $(VERBOSE_DEFAULT) +endif +ifeq ($(VB), 1) + V := +else + V := $(CMD_PREFIX_DEFAULT) +endif + +# Enable stack-checking. WARNING: the full automated test suite currently +# requires a little over 1KB RAM with stack-checking enabled. If you are +# using a device with 1KB internal SRAM and no external SRAM then you +# must disable stack-checking to run all of the automated tests. +#STACK_CHECK=true + +# Directory for built objects +BUILD_DIR=build + +# Port/application object files +APP_OBJECTS = arm_irq.o +APP_OBJECTS += arm_gic.o +APP_OBJECTS += arm_timer.o +APP_OBJECTS += arm_uart.o +APP_OBJECTS += arm_main.o +APP_OBJECTS += atomport.o +APP_OBJECTS += printk.o +APP_OBJECTS += string.o +APP_OBJECTS += vsprintf.o +APP_ASM_OBJECTS = arm_entry.o +APP_ASM_OBJECTS += atomport-asm.o + +# Kernel object files +KERNEL_OBJECTS = atomkernel.o +KERNEL_OBJECTS += atomsem.o +KERNEL_OBJECTS += atommutex.o +KERNEL_OBJECTS += atomtimer.o +KERNEL_OBJECTS += atomqueue.o + +# Collection of built objects (excluding test applications) +ALL_OBJECTS = $(APP_ASM_OBJECTS) $(APP_OBJECTS) $(KERNEL_OBJECTS) +BUILT_OBJECTS = $(patsubst %,$(BUILD_DIR)/%,$(ALL_OBJECTS)) + +# Test object files (dealt with separately as only one per application build) +TEST_OBJECTS = $(notdir $(patsubst %.c,%.o,$(wildcard $(TESTS_DIR)/*.c))) + +# Target application filenames (.elf and .hex) for each test object +TEST_ELFS = $(patsubst %.o,%.elf,$(TEST_OBJECTS)) +TEST_HEXS = $(patsubst %.o,%.hex,$(TEST_OBJECTS)) + +# Search build/output directory for dependencies +vpath %.o ./$(BUILD_DIR) +vpath %.elf ./$(BUILD_DIR) +vpath %.hex ./$(BUILD_DIR) + +# GCC flags +CFLAGS= -g \ + -Wall \ + -Werror \ + -O \ + -mcpu=$(CPU) \ + -fstrength-reduce \ + -fomit-frame-pointer \ + -finline-functions \ + -nostdinc \ + -fno-builtin \ + -fno-stack-protector + +# Enable stack-checking (disable if not required) +ifeq ($(STACK_CHECK),true) +CFLAGS += -DATOM_STACK_CHECKING +endif + +################# +# Build targets # +################# + +# All tests +all: $(BUILD_DIR) $(TEST_HEXS) Makefile + +# Make build/output directory +$(BUILD_DIR): + mkdir $(BUILD_DIR) + +# Test HEX files (one application build for each test) +$(TEST_HEXS): %.hex: %.elf + $(if $(V), @echo " (HEX) $(subst $(build_dir)/,,$@)") + $(V)$(OBJCOPY) -j .text -j .data -O ihex $(BUILD_DIR)/$< $(BUILD_DIR)/$@ + +# Test ELF files (one application build for each test) +$(TEST_ELFS): %.elf: %.o $(APP_ASM_OBJECTS) $(KERNEL_OBJECTS) $(APP_OBJECTS) + $(if $(V), @echo " (ELF) $(subst $(build_dir)/,,$@)") + $(V)$(CC) $(CFLAGS) -nostdlib -nodefaultlibs $(BUILD_DIR)/$(notdir $<) $(BUILT_OBJECTS) -static-libgcc -lgcc --output $(BUILD_DIR)/$@ -Wl -T linker.ld + +# Kernel objects builder +$(KERNEL_OBJECTS): %.o: $(KERNEL_DIR)/%.c + $(if $(V), @echo " (CC) $(subst $(build_dir)/,,$@)") + $(V)$(CC) -c $(CFLAGS) -I. -I$(KERNEL_DIR) $< -o $(BUILD_DIR)/$(notdir $@) + +# Test objects builder +$(TEST_OBJECTS): %.o: $(TESTS_DIR)/%.c + $(if $(V), @echo " (CC) $(subst $(build_dir)/,,$@)") + $(V)$(CC) -c $(CFLAGS) -I. -I$(KERNEL_DIR) $< -o $(BUILD_DIR)/$(notdir $@) + +# Application C objects builder +$(APP_OBJECTS): %.o: ./%.c + $(if $(V), @echo " (CC) $(subst $(build_dir)/,,$@)") + $(V)$(CC) -c $(CFLAGS) -I. -I$(KERNEL_DIR) -I$(TESTS_DIR) $< -o $(BUILD_DIR)/$(notdir $@) + +# Application asm objects builder +$(APP_ASM_OBJECTS): %.o: ./%.s + $(if $(V), @echo " (AS) $(subst $(build_dir)/,,$@)") + $(V)$(CC) -c $(CFLAGS) -D__ASSEMBLY__ -x assembler-with-cpp -I. -I$(KERNEL_DIR) $< -o $(BUILD_DIR)/$(notdir $@) + +# .lst file builder +%.lst: %.c + $(if $(V), @echo " (LST) $(subst $(build_dir)/,,$@)") + $(V)$(CC) $(CFLAGS) -I. -I$(KERNEL_DIR) -I$(TESTS_DIR) -Wa,-al $< > $@ + +# Clean +clean: + $(V)rm -f *.o *.elf *.map *.hex *.bin *.lst + rm -rf doxygen-kernel + rm -rf doxygen-avr + rm -rf build + +doxygen: + doxygen $(KERNEL_DIR)/Doxyfile + doxygen ./Doxyfile diff --git a/ports/arm7a/arm_config.h b/ports/arm7a/arm_config.h new file mode 100644 index 0000000..d4e9e99 --- /dev/null +++ b/ports/arm7a/arm_config.h @@ -0,0 +1,147 @@ +/** + * Copyright (c) 2011 Anup Patel. + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * @file arm_config.h + * @version 1.0 + * @author Anup Patel (anup@brainfault.org) + * @brief ARM Platform Configuration Header + */ +#ifndef _ARM_CONFIG_H__ +#define _ARM_CONFIG_H__ + +/* + * Peripheral addresses + */ +#define REALVIEW_PBA8_UART0_BASE 0x10009000 /* UART 0 */ +#define REALVIEW_PBA8_UART1_BASE 0x1000A000 /* UART 1 */ +#define REALVIEW_PBA8_UART2_BASE 0x1000B000 /* UART 2 */ +#define REALVIEW_PBA8_UART3_BASE 0x1000C000 /* UART 3 */ +#define REALVIEW_PBA8_SSP_BASE 0x1000D000 /* Synchronous Serial Port */ +#define REALVIEW_PBA8_WATCHDOG0_BASE 0x1000F000 /* Watchdog 0 */ +#define REALVIEW_PBA8_WATCHDOG_BASE 0x10010000 /* watchdog interface */ +#define REALVIEW_PBA8_TIMER0_1_BASE 0x10011000 /* Timer 0 and 1 */ +#define REALVIEW_PBA8_TIMER2_3_BASE 0x10012000 /* Timer 2 and 3 */ +#define REALVIEW_PBA8_GPIO0_BASE 0x10013000 /* GPIO port 0 */ +#define REALVIEW_PBA8_RTC_BASE 0x10017000 /* Real Time Clock */ +#define REALVIEW_PBA8_TIMER4_5_BASE 0x10018000 /* Timer 4/5 */ +#define REALVIEW_PBA8_TIMER6_7_BASE 0x10019000 /* Timer 6/7 */ +#define REALVIEW_PBA8_SCTL_BASE 0x1001A000 /* System Controller */ +#define REALVIEW_PBA8_CLCD_BASE 0x10020000 /* CLCD */ +#define REALVIEW_PBA8_ONB_SRAM_BASE 0x10060000 /* On-board SRAM */ +#define REALVIEW_PBA8_DMC_BASE 0x100E0000 /* DMC configuration */ +#define REALVIEW_PBA8_SMC_BASE 0x100E1000 /* SMC configuration */ +#define REALVIEW_PBA8_CAN_BASE 0x100E2000 /* CAN bus */ +#define REALVIEW_PBA8_GIC_CPU_BASE 0x1E000000 /* Generic interrupt controller CPU interface */ +#define REALVIEW_PBA8_FLASH0_BASE 0x40000000 +#define REALVIEW_PBA8_FLASH0_SIZE SZ_64M +#define REALVIEW_PBA8_FLASH1_BASE 0x44000000 +#define REALVIEW_PBA8_FLASH1_SIZE SZ_64M +#define REALVIEW_PBA8_ETH_BASE 0x4E000000 /* Ethernet */ +#define REALVIEW_PBA8_USB_BASE 0x4F000000 /* USB */ +#define REALVIEW_PBA8_GIC_DIST_BASE 0x1E001000 /* Generic interrupt controller distributor */ +#define REALVIEW_PBA8_LT_BASE 0xC0000000 /* Logic Tile expansion */ +#define REALVIEW_PBA8_SDRAM6_BASE 0x70000000 /* SDRAM bank 6 256MB */ +#define REALVIEW_PBA8_SDRAM7_BASE 0x80000000 /* SDRAM bank 7 256MB */ + +#define REALVIEW_PBA8_SYS_PLD_CTRL1 0x74 + +/* + * PBA8 PCI regions + */ +#define REALVIEW_PBA8_PCI_BASE 0x90040000 /* PCI-X Unit base */ +#define REALVIEW_PBA8_PCI_IO_BASE 0x90050000 /* IO Region on AHB */ +#define REALVIEW_PBA8_PCI_MEM_BASE 0xA0000000 /* MEM Region on AHB */ + +#define REALVIEW_PBA8_PCI_BASE_SIZE 0x10000 /* 16 Kb */ +#define REALVIEW_PBA8_PCI_IO_SIZE 0x1000 /* 4 Kb */ +#define REALVIEW_PBA8_PCI_MEM_SIZE 0x20000000 /* 512 MB */ + +/* + * Irqs + */ +#define IRQ_PBA8_GIC_START 32 + +/* L220 +#define IRQ_PBA8_L220_EVENT (IRQ_PBA8_GIC_START + 29) +#define IRQ_PBA8_L220_SLAVE (IRQ_PBA8_GIC_START + 30) +#define IRQ_PBA8_L220_DECODE (IRQ_PBA8_GIC_START + 31) +*/ + +/* + * PB-A8 on-board gic irq sources + */ +#define IRQ_PBA8_WATCHDOG (IRQ_PBA8_GIC_START + 0) /* Watchdog timer */ +#define IRQ_PBA8_SOFT (IRQ_PBA8_GIC_START + 1) /* Software interrupt */ +#define IRQ_PBA8_COMMRx (IRQ_PBA8_GIC_START + 2) /* Debug Comm Rx interrupt */ +#define IRQ_PBA8_COMMTx (IRQ_PBA8_GIC_START + 3) /* Debug Comm Tx interrupt */ +#define IRQ_PBA8_TIMER0_1 (IRQ_PBA8_GIC_START + 4) /* Timer 0/1 (default timer) */ +#define IRQ_PBA8_TIMER2_3 (IRQ_PBA8_GIC_START + 5) /* Timer 2/3 */ +#define IRQ_PBA8_GPIO0 (IRQ_PBA8_GIC_START + 6) /* GPIO 0 */ +#define IRQ_PBA8_GPIO1 (IRQ_PBA8_GIC_START + 7) /* GPIO 1 */ +#define IRQ_PBA8_GPIO2 (IRQ_PBA8_GIC_START + 8) /* GPIO 2 */ + /* 9 reserved */ +#define IRQ_PBA8_RTC (IRQ_PBA8_GIC_START + 10) /* Real Time Clock */ +#define IRQ_PBA8_SSP (IRQ_PBA8_GIC_START + 11) /* Synchronous Serial Port */ +#define IRQ_PBA8_UART0 (IRQ_PBA8_GIC_START + 12) /* UART 0 on development chip */ +#define IRQ_PBA8_UART1 (IRQ_PBA8_GIC_START + 13) /* UART 1 on development chip */ +#define IRQ_PBA8_UART2 (IRQ_PBA8_GIC_START + 14) /* UART 2 on development chip */ +#define IRQ_PBA8_UART3 (IRQ_PBA8_GIC_START + 15) /* UART 3 on development chip */ +#define IRQ_PBA8_SCI (IRQ_PBA8_GIC_START + 16) /* Smart Card Interface */ +#define IRQ_PBA8_MMCI0A (IRQ_PBA8_GIC_START + 17) /* Multimedia Card 0A */ +#define IRQ_PBA8_MMCI0B (IRQ_PBA8_GIC_START + 18) /* Multimedia Card 0B */ +#define IRQ_PBA8_AACI (IRQ_PBA8_GIC_START + 19) /* Audio Codec */ +#define IRQ_PBA8_KMI0 (IRQ_PBA8_GIC_START + 20) /* Keyboard/Mouse port 0 */ +#define IRQ_PBA8_KMI1 (IRQ_PBA8_GIC_START + 21) /* Keyboard/Mouse port 1 */ +#define IRQ_PBA8_CHARLCD (IRQ_PBA8_GIC_START + 22) /* Character LCD */ +#define IRQ_PBA8_CLCD (IRQ_PBA8_GIC_START + 23) /* CLCD controller */ +#define IRQ_PBA8_DMAC (IRQ_PBA8_GIC_START + 24) /* DMA controller */ +#define IRQ_PBA8_PWRFAIL (IRQ_PBA8_GIC_START + 25) /* Power failure */ +#define IRQ_PBA8_PISMO (IRQ_PBA8_GIC_START + 26) /* PISMO interface */ +#define IRQ_PBA8_DoC (IRQ_PBA8_GIC_START + 27) /* Disk on Chip memory controller */ +#define IRQ_PBA8_ETH (IRQ_PBA8_GIC_START + 28) /* Ethernet controller */ +#define IRQ_PBA8_USB (IRQ_PBA8_GIC_START + 29) /* USB controller */ +#define IRQ_PBA8_TSPEN (IRQ_PBA8_GIC_START + 30) /* Touchscreen pen */ +#define IRQ_PBA8_TSKPAD (IRQ_PBA8_GIC_START + 31) /* Touchscreen keypad */ + +/* ... */ +#define IRQ_PBA8_PCI0 (IRQ_PBA8_GIC_START + 50) +#define IRQ_PBA8_PCI1 (IRQ_PBA8_GIC_START + 51) +#define IRQ_PBA8_PCI2 (IRQ_PBA8_GIC_START + 52) +#define IRQ_PBA8_PCI3 (IRQ_PBA8_GIC_START + 53) + +#define IRQ_PBA8_SMC -1 +#define IRQ_PBA8_SCTL -1 + +#define NR_GIC_PBA8 1 + +/* + * Only define NR_IRQS if less than NR_IRQS_PBA8 + */ +#define NR_IRQS_PBA8 (IRQ_PBA8_GIC_START + 64) + +#if !defined(ARM_GIC_NR_IRQS) || (ARM_GIC_NR_IRQS < NR_IRQS_PBA8) +#undef ARM_GIC_NR_IRQS +#define ARM_GIC_NR_IRQS NR_IRQS_PBA8 +#endif + +#if !defined(ARM_GIC_MAX_NR) || (REALVIEW_GIC_MAX_NR < NR_GIC_PBA8) +#undef ARM_GIC_MAX_NR +#define ARM_GIC_MAX_NR NR_GIC_PBA8 +#endif + +#endif diff --git a/ports/arm7a/arm_entry.s b/ports/arm7a/arm_entry.s new file mode 100644 index 0000000..c19d651 --- /dev/null +++ b/ports/arm7a/arm_entry.s @@ -0,0 +1,212 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include + +.macro SET_CURRENT_FLAGS flags, treg + mrs \treg, cpsr + orr \treg, \treg, #(\flags) + msr cpsr, \treg +.endm + +.macro SET_CURRENT_MODE mode + cps #(\mode) +.endm + +.macro SET_CURRENT_STACK new_stack + ldr sp, \new_stack +.endm + +.macro START_EXCEPTION_HANDLER irqname, lroffset + .align 5 +\irqname: + sub lr, lr, #\lroffset +.endm + +/* Save User Registers */ +.macro PUSH_USER_REGS + str lr, [sp, #-4]!; /* Push the return address */ + sub sp, sp, #(4*15); /* Adjust the stack pointer */ + stmia sp, {r0-r12}; /* Push user mode registers */ + add r0, sp, #(4*13); /* Adjust the stack pointer */ + stmia r0, {r13-r14}^; /* Push user mode registers */ + mov r0, r0; /* NOP for previous inst */ + mrs r0, spsr_all; /* Put the SPSR on the stack */ + str r0, [sp, #-4]! +.endm + +/* Save User Registers in FIQ */ +.macro PUSH_FIQUSER_REGS + str lr, [sp, #-4]!; /* Push the return address */ + sub sp, sp, #(4*15); /* Adjust the stack pointer */ + stmia sp, {r0-r7}; /* Push user mode registers */ + add r0, sp, #(4*8); /* Adjust the stack pointer */ + stmia r0, {r8-r14}^; /* Push user mode registers */ + mov r0, r0; /* NOP for previous inst */ + mrs r0, spsr_all; /* Put the SPSR on the stack */ + str r0, [sp, #-4]! +.endm + +/* Call C function to handle exception */ +.macro CALL_EXCEPTION_CFUNC cfunc + mov r0, sp + bl \cfunc +.endm + +/* Restore User Registers */ +.macro PULL_USER_REGS + ldr r0, [sp], #0x0004; /* Get SPSR from stack */ + msr spsr_all, r0; + ldmia sp, {r0-r14}^; /* Restore registers (user) */ + mov r0, r0; /* NOP for previous isnt */ + add sp, sp, #(4*15); /* Adjust the stack pointer */ + ldr lr, [sp], #0x0004 /* Pull return address */ +.endm + +.macro END_EXCEPTION_HANDLER + movs pc, lr +.endm + + .section .expvect, "ax", %progbits + .globl _start_vect +_start_vect: + ldr pc, __reset + ldr pc, __undefined_instruction + ldr pc, __software_interrupt + ldr pc, __prefetch_abort + ldr pc, __data_abort + ldr pc, __not_used + ldr pc, __irq + ldr pc, __fiq +__reset: + .word _reset +__undefined_instruction: + .word _undefined_instruction +__software_interrupt: + .word _software_interrupt +__prefetch_abort: + .word _prefetch_abort +__data_abort: + .word _data_abort +__not_used: + .word _not_used +__irq: + .word _irq +__fiq: + .word _fiq + .global _end_vect +_end_vect: + +__svc_stack_end: + .word _svc_stack_end +__und_stack_end: + .word _und_stack_end +__abt_stack_end: + .word _abt_stack_end +__irq_stack_end: + .word _irq_stack_end +__fiq_stack_end: + .word _fiq_stack_end +__usr_stack_end: + .word _usr_stack_end + + .globl _reset +_reset: + /* Clear a register for temporary usage */ + mov r8, #0 + /* Disable IRQ & FIQ */ + cpsid if + /* Set Supervisor Mode Stack */ + SET_CURRENT_MODE CPSR_MODE_SUPERVISOR + SET_CURRENT_STACK __svc_stack_end + /* Set Undefined Mode Stack */ + SET_CURRENT_MODE CPSR_MODE_UNDEFINED + SET_CURRENT_STACK __und_stack_end + /* Set Abort Mode Stack */ + SET_CURRENT_MODE CPSR_MODE_ABORT + SET_CURRENT_STACK __abt_stack_end + /* Set IRQ Mode Stack */ + SET_CURRENT_MODE CPSR_MODE_IRQ + SET_CURRENT_STACK __irq_stack_end + /* Set FIQ Mode Stack */ + SET_CURRENT_MODE CPSR_MODE_FIQ + SET_CURRENT_STACK __fiq_stack_end + /* Set System Mode Stack */ + SET_CURRENT_MODE CPSR_MODE_SYSTEM + SET_CURRENT_STACK __usr_stack_end + /* Set to Supervisor Mode */ + SET_CURRENT_MODE CPSR_MODE_SUPERVISOR + /* Call main function */ + bl main + /* We should never reach here */ + b . + + +START_EXCEPTION_HANDLER _undefined_instruction, 4 + PUSH_USER_REGS + CALL_EXCEPTION_CFUNC do_undefined_instruction + PULL_USER_REGS +END_EXCEPTION_HANDLER + +START_EXCEPTION_HANDLER _software_interrupt, 4 + PUSH_USER_REGS + CALL_EXCEPTION_CFUNC do_software_interrupt + PULL_USER_REGS +END_EXCEPTION_HANDLER + +START_EXCEPTION_HANDLER _prefetch_abort, 4 + PUSH_USER_REGS + CALL_EXCEPTION_CFUNC do_prefetch_abort + PULL_USER_REGS +END_EXCEPTION_HANDLER + +START_EXCEPTION_HANDLER _data_abort, 8 + PUSH_USER_REGS + CALL_EXCEPTION_CFUNC do_data_abort + PULL_USER_REGS +END_EXCEPTION_HANDLER + +START_EXCEPTION_HANDLER _not_used, 4 + PUSH_USER_REGS + CALL_EXCEPTION_CFUNC do_not_used + PULL_USER_REGS +END_EXCEPTION_HANDLER + +START_EXCEPTION_HANDLER _irq, 4 + PUSH_USER_REGS + CALL_EXCEPTION_CFUNC do_irq + PULL_USER_REGS +END_EXCEPTION_HANDLER + +START_EXCEPTION_HANDLER _fiq, 4 + PUSH_FIQUSER_REGS + CALL_EXCEPTION_CFUNC do_fiq + PULL_USER_REGS +END_EXCEPTION_HANDLER + diff --git a/ports/arm7a/arm_gic.c b/ports/arm7a/arm_gic.c new file mode 100644 index 0000000..773d869 --- /dev/null +++ b/ports/arm7a/arm_gic.c @@ -0,0 +1,208 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include + +#define max(a,b) ((a) < (b) ? (b) : (a)) + +struct gic_chip_data { + uint32_t irq_offset; + virtual_addr_t dist_base; + virtual_addr_t cpu_base; +}; + +static struct gic_chip_data gic_data[ARM_GIC_MAX_NR]; + +static inline void arm_gic_write(uint32_t val, virtual_addr_t addr) +{ + arm_writel(val, (void *)(addr)); +} + +static inline uint32_t arm_gic_read(virtual_addr_t addr) +{ + return arm_readl((void *)(addr)); +} + +int arm_gic_active_irq(uint32_t gic_nr) +{ + int ret = -1; + + if (ARM_GIC_MAX_NR <= gic_nr) { + return -1; + } + + ret = arm_gic_read(gic_data[gic_nr].cpu_base + + GIC_CPU_INTACK) & 0x3FF; + ret += gic_data[gic_nr].irq_offset; + + return ret; +} + +int arm_gic_ack_irq(uint32_t gic_nr, uint32_t irq) +{ + uint32_t mask = 1 << (irq % 32); + uint32_t gic_irq; + + if (ARM_GIC_MAX_NR <= gic_nr) { + return -1; + } + + if (irq < gic_data[gic_nr].irq_offset) { + return -1; + } + + gic_irq = irq - gic_data[gic_nr].irq_offset; + + arm_gic_write(mask, gic_data[gic_nr].dist_base + + GIC_DIST_ENABLE_CLEAR + (gic_irq / 32) * 4); + arm_gic_write(gic_irq, gic_data[gic_nr].cpu_base + GIC_CPU_EOI); + arm_gic_write(mask, gic_data[gic_nr].dist_base + + GIC_DIST_ENABLE_SET + (gic_irq / 32) * 4); + + return 0; +} + +int arm_gic_mask(uint32_t gic_nr, uint32_t irq) +{ + uint32_t mask = 1 << (irq % 32); + uint32_t gic_irq; + + if (ARM_GIC_MAX_NR <= gic_nr) { + return -1; + } + + if (irq < gic_data[gic_nr].irq_offset) { + return -1; + } + + gic_irq = irq - gic_data[gic_nr].irq_offset; + + arm_gic_write(mask, gic_data[gic_nr].dist_base + + GIC_DIST_ENABLE_CLEAR + (gic_irq / 32) * 4); + + return 0; +} + +int arm_gic_unmask(uint32_t gic_nr, uint32_t irq) +{ + uint32_t mask = 1 << (irq % 32); + uint32_t gic_irq; + + if (ARM_GIC_MAX_NR <= gic_nr) { + return -1; + } + + if (irq < gic_data[gic_nr].irq_offset) { + return -1; + } + + gic_irq = irq - gic_data[gic_nr].irq_offset; + + arm_gic_write(mask, gic_data[gic_nr].dist_base + + GIC_DIST_ENABLE_SET + (gic_irq / 32) * 4); + + return 0; +} + +int arm_gic_dist_init(uint32_t gic_nr, virtual_addr_t base, uint32_t irq_start) +{ + unsigned int max_irq, i; + uint32_t cpumask = 1 << 0; /*smp_processor_id(); */ + + if (ARM_GIC_MAX_NR <= gic_nr) { + return -1; + } + + cpumask |= cpumask << 8; + cpumask |= cpumask << 16; + + gic_data[gic_nr].dist_base = base; + gic_data[gic_nr].irq_offset = (irq_start - 1) & ~31; + + arm_gic_write(0, base + GIC_DIST_CTRL); + + /* + * Find out how many interrupts are supported. + */ + max_irq = arm_gic_read(base + GIC_DIST_CTR) & 0x1f; + max_irq = (max_irq + 1) * 32; + + /* + * The GIC only supports up to 1020 interrupt sources. + * Limit this to either the architected maximum, or the + * platform maximum. + */ + if (max_irq > max(1020, ARM_GIC_NR_IRQS)) + max_irq = max(1020, ARM_GIC_NR_IRQS); + + /* + * Set all global interrupts to be level triggered, active low. + */ + for (i = 32; i < max_irq; i += 16) + arm_gic_write(0, base + GIC_DIST_CONFIG + i * 4 / 16); + + /* + * Set all global interrupts to this CPU only. + */ + for (i = 32; i < max_irq; i += 4) + arm_gic_write(cpumask, base + GIC_DIST_TARGET + i * 4 / 4); + + /* + * Set priority on all interrupts. + */ + for (i = 0; i < max_irq; i += 4) + arm_gic_write(0xa0a0a0a0, base + GIC_DIST_PRI + i * 4 / 4); + + /* + * Disable all interrupts. + */ + for (i = 0; i < max_irq; i += 32) + arm_gic_write(0xffffffff, + base + GIC_DIST_ENABLE_CLEAR + i * 4 / 32); + + arm_gic_write(1, base + GIC_DIST_CTRL); + + return 0; +} + +int arm_gic_cpu_init(uint32_t gic_nr, virtual_addr_t base) +{ + if (ARM_GIC_MAX_NR <= gic_nr) { + return -1; + } + + gic_data[gic_nr].cpu_base = base; + + arm_gic_write(0xf0, base + GIC_CPU_PRIMASK); + arm_gic_write(1, base + GIC_CPU_CTRL); + + return 0; +} diff --git a/ports/arm7a/arm_gic.h b/ports/arm7a/arm_gic.h new file mode 100644 index 0000000..cca8c77 --- /dev/null +++ b/ports/arm7a/arm_gic.h @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +#ifndef _ARM_GIC_H__ +#define _ARM_GIC_H__ + +#include +#include + +#define GIC_CPU_CTRL 0x00 +#define GIC_CPU_PRIMASK 0x04 +#define GIC_CPU_BINPOINT 0x08 +#define GIC_CPU_INTACK 0x0c +#define GIC_CPU_EOI 0x10 +#define GIC_CPU_RUNNINGPRI 0x14 +#define GIC_CPU_HIGHPRI 0x18 + +#define GIC_DIST_CTRL 0x000 +#define GIC_DIST_CTR 0x004 +#define GIC_DIST_ENABLE_SET 0x100 +#define GIC_DIST_ENABLE_CLEAR 0x180 +#define GIC_DIST_PENDING_SET 0x200 +#define GIC_DIST_PENDING_CLEAR 0x280 +#define GIC_DIST_ACTIVE_BIT 0x300 +#define GIC_DIST_PRI 0x400 +#define GIC_DIST_TARGET 0x800 +#define GIC_DIST_CONFIG 0xc00 +#define GIC_DIST_SOFTINT 0xf00 + +int arm_gic_active_irq(uint32_t gic_nr); +int arm_gic_ack_irq(uint32_t gic_nr, uint32_t irq); +int arm_gic_mask(uint32_t gic_nr, uint32_t irq); +int arm_gic_unmask(uint32_t gic_nr, uint32_t irq); +int arm_gic_dist_init(uint32_t gic_nr, virtual_addr_t base, uint32_t irq_start); +int arm_gic_cpu_init(uint32_t gic_nr, virtual_addr_t base); + +#endif diff --git a/ports/arm7a/arm_io.h b/ports/arm7a/arm_io.h new file mode 100644 index 0000000..950a938 --- /dev/null +++ b/ports/arm7a/arm_io.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __ARM_IO_H_ +#define __ARM_IO_H_ + +#include + +static inline uint32_t arm_readl(void * addr) +{ + return *((uint32_t *)addr); +} + +static inline void arm_writel(uint32_t data, void * addr) +{ + *((uint32_t *)addr) = data; +} + +#endif /* __ARM_IO_H_ */ diff --git a/ports/arm7a/arm_irq.c b/ports/arm7a/arm_irq.c new file mode 100644 index 0000000..153bad2 --- /dev/null +++ b/ports/arm7a/arm_irq.c @@ -0,0 +1,151 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include + +arm_irq_handler_t irq_hndls[NR_IRQS_PBA8]; + +void do_undefined_instruction(pt_regs_t *regs) +{ +} + +void do_software_interrupt(pt_regs_t *regs) +{ +} + +void do_prefetch_abort(pt_regs_t *regs) +{ +} + +void do_data_abort(pt_regs_t *regs) +{ +} + +void do_not_used(pt_regs_t *regs) +{ +} + +void do_irq(pt_regs_t *uregs) +{ + int rc = 0; + int irq = arm_gic_active_irq(0); + + if (-1 < irq) { + if (irq_hndls[irq]) { + rc = irq_hndls[irq](irq, uregs); + if (rc) { + while (1); + } + } + rc = arm_gic_ack_irq(0, irq); + if (rc) { + while (1); + } + } +} + +void do_fiq(pt_regs_t *uregs) +{ +} + +void arm_irq_setup(void) +{ + extern uint32_t _start_vect[]; + uint32_t *vectors = (uint32_t *)NULL; + uint32_t *vectors_data = vectors + CPU_IRQ_NR; + int vec; + + /* + * Loop through the vectors we're taking over, and copy the + * vector's insn and data word. + */ + for (vec = 0; vec < CPU_IRQ_NR; vec++) { + vectors[vec] = _start_vect[vec]; + vectors_data[vec] = _start_vect[vec+CPU_IRQ_NR]; + } + + /* + * Check if verctors are set properly + */ + for (vec = 0; vec < CPU_IRQ_NR; vec++) { + if ((vectors[vec] != _start_vect[vec]) || + (vectors_data[vec] != _start_vect[vec+CPU_IRQ_NR])) { + /* Hang */ + while(1); + } + } + + /* + * Reset irq handlers + */ + for (vec = 0; vec < NR_IRQS_PBA8; vec++) { + irq_hndls[vec] = NULL; + } + + /* + * Initialize Generic Interrupt Controller + */ + vec = arm_gic_dist_init(0, REALVIEW_PBA8_GIC_DIST_BASE, + IRQ_PBA8_GIC_START); + if (vec) { + while(1); + } + vec = arm_gic_cpu_init(0, REALVIEW_PBA8_GIC_CPU_BASE); + if (vec) { + while(1); + } +} + +void arm_irq_register(uint32_t irq, arm_irq_handler_t hndl) +{ + int rc = 0; + if (irq < NR_IRQS_PBA8) { + irq_hndls[irq] = hndl; + if (irq_hndls[irq]) { + rc = arm_gic_unmask(0, irq); + if (rc) { + while (1); + } + } + } +} + +void arm_irq_enable(void) +{ + __asm( "cpsie if" ); +} + +void arm_irq_disable(void) +{ + __asm( "cpsid if" ); +} + diff --git a/ports/arm7a/arm_irq.h b/ports/arm7a/arm_irq.h new file mode 100644 index 0000000..bad336d --- /dev/null +++ b/ports/arm7a/arm_irq.h @@ -0,0 +1,55 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __ARM_IRQ_H +#define __ARM_IRQ_H + +#include +#include + +typedef int (*arm_irq_handler_t) (uint32_t irq_no, pt_regs_t * regs); + +#define CPU_IRQ_NR 8 + +/** IRQ Numbers */ +#define ARM_RESET_IRQ 0 +#define ARM_UNDEF_INST_IRQ 1 +#define ARM_SOFT_IRQ 2 +#define ARM_PREFETCH_ABORT_IRQ 3 +#define ARM_DATA_ABORT_IRQ 4 +#define ARM_NOT_USED_IRQ 5 +#define ARM_EXTERNAL_IRQ 6 +#define ARM_EXTERNAL_FIQ 7 + +void arm_irq_setup(void); +void arm_irq_register(uint32_t irq_no, arm_irq_handler_t hndl); +void arm_irq_enable(void); +void arm_irq_disable(void); + +#endif /* __ARM_IRQ_H */ diff --git a/ports/arm7a/arm_main.c b/ports/arm7a/arm_main.c new file mode 100644 index 0000000..7cfd526 --- /dev/null +++ b/ports/arm7a/arm_main.c @@ -0,0 +1,238 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include "system.h" +#include +#include +#include + +/* Constants */ + +/* + * Idle thread stack size + * + * This needs to be large enough to handle any interrupt handlers + * and callbacks called by interrupt handlers (e.g. user-created + * timer callbacks) as well as the saving of all context when + * switching away from this thread. + * + * In this case, the idle stack is allocated on the BSS via the + * idle_thread_stack[] byte array. + */ +#define IDLE_STACK_SIZE_BYTES 8192 + + +/* + * Main thread stack size + * + * Note that this is not a required OS kernel thread - you will replace + * this with your own application thread. + * + * In this case the Main thread is responsible for calling out to the + * test routines. Once a test routine has finished, the test status is + * printed out on the UART and the thread remains running in a loop + * flashing a LED. + * + * The Main thread stack generally needs to be larger than the idle + * thread stack, as not only does it need to store interrupt handler + * stack saves and context switch saves, but the application main thread + * will generally be carrying out more nested function calls and require + * stack for application code local variables etc. + * + * With all OS tests implemented to date on the AVR, the Main thread + * stack has not exceeded 198 bytes. To allow all tests to run we set + * a minimum main thread stack size of 204 bytes. This may increase in + * future as the codebase changes but for the time being is enough to + * cope with all of the automated tests. + */ +#define MAIN_STACK_SIZE_BYTES 8192 + + +/* + * Startup code stack + * + * Some stack space is required at initial startup for running the main() + * routine. This stack space is only temporarily required at first bootup + * and is no longer required as soon as the OS is started. By default + * GCC sets this to the top of RAM (RAMEND) and it grows down from there. + * Because we only need this temporarily, though, it would be wasteful to + * set aside a region at the top of RAM which is not used during runtime. + * + * What we do here is to reuse part of the idle thread's stack during + * initial startup. As soon as we enter the main() routine we move the + * stack pointer to half-way down the idle thread's stack. This is used + * temporarily while calls are made to atomOSInit(), atomThreadCreate() + * and atomOSStart(). Once the OS is started this stack area is no + * longer required, and can be used for its original purpose (for the + * idle thread's stack). + * + * This does mean, however, that we cannot monitor the stack usage of the + * idle thread. Stack usage is monitored by prefilling the stack with a + * known value, and we are obliterating some of that prefilled area by + * using it as our startup stack, so we cannot use the stack-checking API + * to get a true picture of idle thread stack usage. If you wish to + * monitor idle thread stack usage for your applications then you are + * free to use a different region for the startup stack (e.g. set aside + * an area permanently, or place it somewhere you know you can reuse + * later in the application). For the time being, this method gives us a + * simple way of reducing the memory consumption without having to add + * any special AVR-specific considerations to the automated test + * applications. + * + * This optimisation was required to allow some of the larger automated + * test modules to run on devices with 1KB of RAM. You should avoid doing + * this if you can afford to set aside 64 bytes or so, or if you are + * writing your own applications in which you have further control over + * where data is located. + */ + + +/* Local data */ + +/* Application threads' TCBs */ +static ATOM_TCB main_tcb; + +/* Main thread's stack area */ +static uint8_t main_thread_stack[MAIN_STACK_SIZE_BYTES]; + +/* Idle thread's stack area */ +static uint8_t idle_thread_stack[IDLE_STACK_SIZE_BYTES]; + +/* Forward declarations */ +static void main_thread_func (uint32_t data); + +/* Global Data */ +uint32_t at_preempt_count; + +/** + * \b main + * + * Program entry point. + * + * Sets up the AVR hardware resources (system tick timer interrupt) necessary + * for the OS to be started. Creates an application thread and starts the OS. + */ + +int main ( void ) +{ + int8_t status; + + at_preempt_count = 0; + + /** + * Note: to protect OS structures and data during initialisation, + * interrupts must remain disabled until the first thread + * has been restored. They are reenabled at the very end of + * the first thread restore, at which point it is safe for a + * reschedule to take place. + */ + + /** + * Initialise the OS before creating our threads. + * + * Note that we tell the OS that the idle stack is half its actual + * size. This prevents it prefilling the bottom half with known + * values for stack-checkig purposes, which we cannot allow because + * we are temporarily using it for our own stack. The remainder will + * still be available once the OS is started, this only prevents the + * OS from prefilling it. + * + * If you are not reusing the idle thread's stack during startup then + * you should pass in the correct size here. + */ + status = atomOSInit(&idle_thread_stack[0], + IDLE_STACK_SIZE_BYTES, 0); + if (status == ATOM_OK) + { + arm_irq_setup(); + + arm_irq_enable(); + + arm_timer_init(1000, 1); + + arm_uart_init(); + + /* Create an application thread */ + status = atomThreadCreate(&main_tcb, + TEST_THREAD_PRIO, main_thread_func, 0, + &main_thread_stack[0], + MAIN_STACK_SIZE_BYTES, 0); + if (status == ATOM_OK) + { + arm_timer_enable(); + + /** + * First application thread successfully created. It is + * now possible to start the OS. Execution will not return + * from atomOSStart(), which will restore the context of + * our application thread and start executing it. + * + * Note that interrupts are still disabled at this point. + * They will be enabled as we restore and execute our first + * thread in archFirstThreadRestore(). + */ + atomOSStart(); + } + } + + while (1); + + /* There was an error starting the OS if we reach here */ + return (0); +} + + +/** + * \b main_thread_func + * + * Entry point for main application thread. + * + * This is the first thread that will be executed when the OS is started. + * + * @param[in] data Unused (optional thread entry parameter) + * + * @return None + */ +static void main_thread_func (uint32_t data) +{ + while (1) { + /* Put a message out on the UART */ + printk("Running Tests... "); + if (test_start() != 0) { + printk("FAILED!\n"); + } else { + printk("SUCCESS!\n"); + } + } +} diff --git a/ports/arm7a/arm_plat.h b/ports/arm7a/arm_plat.h new file mode 100644 index 0000000..b226955 --- /dev/null +++ b/ports/arm7a/arm_plat.h @@ -0,0 +1,287 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +#ifndef _ARM_PLAT_H__ +#define _ARM_PLAT_H__ + +/* + * Memory definitions + */ +#define REALVIEW_BOOT_ROM_LO 0x30000000 /* DoC Base (64Mb)... */ +#define REALVIEW_BOOT_ROM_HI 0x30000000 +#define REALVIEW_BOOT_ROM_BASE REALVIEW_BOOT_ROM_HI /* Normal position */ +#define REALVIEW_BOOT_ROM_SIZE SZ_64M + +#define REALVIEW_SSRAM_BASE /* REALVIEW_SSMC_BASE ? */ +#define REALVIEW_SSRAM_SIZE SZ_2M + +/* + * SDRAM + */ +#define REALVIEW_SDRAM_BASE 0x00000000 + +/* + * Logic expansion modules + * + */ + +/* ------------------------------------------------------------------------ + * RealView Registers + * ------------------------------------------------------------------------ + * + */ +#define REALVIEW_SYS_ID_OFFSET 0x00 +#define REALVIEW_SYS_SW_OFFSET 0x04 +#define REALVIEW_SYS_LED_OFFSET 0x08 +#define REALVIEW_SYS_OSC0_OFFSET 0x0C + +#define REALVIEW_SYS_OSC1_OFFSET 0x10 +#define REALVIEW_SYS_OSC2_OFFSET 0x14 +#define REALVIEW_SYS_OSC3_OFFSET 0x18 +#define REALVIEW_SYS_OSC4_OFFSET 0x1C /* OSC1 for RealView/AB */ + +#define REALVIEW_SYS_LOCK_OFFSET 0x20 +#define REALVIEW_SYS_100HZ_OFFSET 0x24 +#define REALVIEW_SYS_CFGDATA1_OFFSET 0x28 +#define REALVIEW_SYS_CFGDATA2_OFFSET 0x2C +#define REALVIEW_SYS_FLAGS_OFFSET 0x30 +#define REALVIEW_SYS_FLAGSSET_OFFSET 0x30 +#define REALVIEW_SYS_FLAGSCLR_OFFSET 0x34 +#define REALVIEW_SYS_NVFLAGS_OFFSET 0x38 +#define REALVIEW_SYS_NVFLAGSSET_OFFSET 0x38 +#define REALVIEW_SYS_NVFLAGSCLR_OFFSET 0x3C +#define REALVIEW_SYS_RESETCTL_OFFSET 0x40 +#define REALVIEW_SYS_PCICTL_OFFSET 0x44 +#define REALVIEW_SYS_MCI_OFFSET 0x48 +#define REALVIEW_SYS_FLASH_OFFSET 0x4C +#define REALVIEW_SYS_CLCD_OFFSET 0x50 +#define REALVIEW_SYS_CLCDSER_OFFSET 0x54 +#define REALVIEW_SYS_BOOTCS_OFFSET 0x58 +#define REALVIEW_SYS_24MHz_OFFSET 0x5C +#define REALVIEW_SYS_MISC_OFFSET 0x60 +#define REALVIEW_SYS_IOSEL_OFFSET 0x70 +#define REALVIEW_SYS_PROCID_OFFSET 0x84 +#define REALVIEW_SYS_TEST_OSC0_OFFSET 0xC0 +#define REALVIEW_SYS_TEST_OSC1_OFFSET 0xC4 +#define REALVIEW_SYS_TEST_OSC2_OFFSET 0xC8 +#define REALVIEW_SYS_TEST_OSC3_OFFSET 0xCC +#define REALVIEW_SYS_TEST_OSC4_OFFSET 0xD0 + +#define REALVIEW_SYS_BASE 0x10000000 +#define REALVIEW_SYS_ID (REALVIEW_SYS_BASE + REALVIEW_SYS_ID_OFFSET) +#define REALVIEW_SYS_SW (REALVIEW_SYS_BASE + REALVIEW_SYS_SW_OFFSET) +#define REALVIEW_SYS_LED (REALVIEW_SYS_BASE + REALVIEW_SYS_LED_OFFSET) +#define REALVIEW_SYS_OSC0 (REALVIEW_SYS_BASE + REALVIEW_SYS_OSC0_OFFSET) +#define REALVIEW_SYS_OSC1 (REALVIEW_SYS_BASE + REALVIEW_SYS_OSC1_OFFSET) + +#define REALVIEW_SYS_LOCK (REALVIEW_SYS_BASE + REALVIEW_SYS_LOCK_OFFSET) +#define REALVIEW_SYS_100HZ (REALVIEW_SYS_BASE + REALVIEW_SYS_100HZ_OFFSET) +#define REALVIEW_SYS_CFGDATA1 (REALVIEW_SYS_BASE + REALVIEW_SYS_CFGDATA1_OFFSET) +#define REALVIEW_SYS_CFGDATA2 (REALVIEW_SYS_BASE + REALVIEW_SYS_CFGDATA2_OFFSET) +#define REALVIEW_SYS_FLAGS (REALVIEW_SYS_BASE + REALVIEW_SYS_FLAGS_OFFSET) +#define REALVIEW_SYS_FLAGSSET (REALVIEW_SYS_BASE + REALVIEW_SYS_FLAGSSET_OFFSET) +#define REALVIEW_SYS_FLAGSCLR (REALVIEW_SYS_BASE + REALVIEW_SYS_FLAGSCLR_OFFSET) +#define REALVIEW_SYS_NVFLAGS (REALVIEW_SYS_BASE + REALVIEW_SYS_NVFLAGS_OFFSET) +#define REALVIEW_SYS_NVFLAGSSET (REALVIEW_SYS_BASE + REALVIEW_SYS_NVFLAGSSET_OFFSET) +#define REALVIEW_SYS_NVFLAGSCLR (REALVIEW_SYS_BASE + REALVIEW_SYS_NVFLAGSCLR_OFFSET) +#define REALVIEW_SYS_RESETCTL (REALVIEW_SYS_BASE + REALVIEW_SYS_RESETCTL_OFFSET) +#define REALVIEW_SYS_PCICTL (REALVIEW_SYS_BASE + REALVIEW_SYS_PCICTL_OFFSET) +#define REALVIEW_SYS_MCI (REALVIEW_SYS_BASE + REALVIEW_SYS_MCI_OFFSET) +#define REALVIEW_SYS_FLASH (REALVIEW_SYS_BASE + REALVIEW_SYS_FLASH_OFFSET) +#define REALVIEW_SYS_CLCD (REALVIEW_SYS_BASE + REALVIEW_SYS_CLCD_OFFSET) +#define REALVIEW_SYS_CLCDSER (REALVIEW_SYS_BASE + REALVIEW_SYS_CLCDSER_OFFSET) +#define REALVIEW_SYS_BOOTCS (REALVIEW_SYS_BASE + REALVIEW_SYS_BOOTCS_OFFSET) +#define REALVIEW_SYS_24MHz (REALVIEW_SYS_BASE + REALVIEW_SYS_24MHz_OFFSET) +#define REALVIEW_SYS_MISC (REALVIEW_SYS_BASE + REALVIEW_SYS_MISC_OFFSET) +#define REALVIEW_SYS_IOSEL (REALVIEW_SYS_BASE + REALVIEW_SYS_IOSEL_OFFSET) +#define REALVIEW_SYS_PROCID (REALVIEW_SYS_BASE + REALVIEW_SYS_PROCID_OFFSET) +#define REALVIEW_SYS_TEST_OSC0 (REALVIEW_SYS_BASE + REALVIEW_SYS_TEST_OSC0_OFFSET) +#define REALVIEW_SYS_TEST_OSC1 (REALVIEW_SYS_BASE + REALVIEW_SYS_TEST_OSC1_OFFSET) +#define REALVIEW_SYS_TEST_OSC2 (REALVIEW_SYS_BASE + REALVIEW_SYS_TEST_OSC2_OFFSET) +#define REALVIEW_SYS_TEST_OSC3 (REALVIEW_SYS_BASE + REALVIEW_SYS_TEST_OSC3_OFFSET) +#define REALVIEW_SYS_TEST_OSC4 (REALVIEW_SYS_BASE + REALVIEW_SYS_TEST_OSC4_OFFSET) + +/* + * Values for REALVIEW_SYS_RESET_CTRL + */ +#define REALVIEW_SYS_CTRL_RESET_CONFIGCLR 0x01 +#define REALVIEW_SYS_CTRL_RESET_CONFIGINIT 0x02 +#define REALVIEW_SYS_CTRL_RESET_DLLRESET 0x03 +#define REALVIEW_SYS_CTRL_RESET_PLLRESET 0x04 +#define REALVIEW_SYS_CTRL_RESET_POR 0x05 +#define REALVIEW_SYS_CTRL_RESET_DoC 0x06 + +#define REALVIEW_SYS_CTRL_LED (1 << 0) + +/* ------------------------------------------------------------------------ + * RealView control registers + * ------------------------------------------------------------------------ + */ + +/* + * REALVIEW_IDFIELD + * + * 31:24 = manufacturer (0x41 = ARM) + * 23:16 = architecture (0x08 = AHB system bus, ASB processor bus) + * 15:12 = FPGA (0x3 = XVC600 or XVC600E) + * 11:4 = build value + * 3:0 = revision number (0x1 = rev B (AHB)) + */ + +/* + * REALVIEW_SYS_LOCK + * control access to SYS_OSCx, SYS_CFGDATAx, SYS_RESETCTL, + * SYS_CLD, SYS_BOOTCS + */ +#define REALVIEW_SYS_LOCK_LOCKED (1 << 16) +#define REALVIEW_SYS_LOCKVAL_MASK 0xFFFF /* write 0xA05F to enable write access */ + +/* + * REALVIEW_SYS_FLASH + */ +#define REALVIEW_FLASHPROG_FLVPPEN (1 << 0) /* Enable writing to flash */ + +/* + * REALVIEW_INTREG + * - used to acknowledge and control MMCI and UART interrupts + */ +#define REALVIEW_INTREG_WPROT 0x00 /* MMC protection status (no interrupt generated) */ +#define REALVIEW_INTREG_RI0 0x01 /* Ring indicator UART0 is asserted, */ +#define REALVIEW_INTREG_CARDIN 0x08 /* MMCI card in detect */ + /* write 1 to acknowledge and clear */ +#define REALVIEW_INTREG_RI1 0x02 /* Ring indicator UART1 is asserted, */ +#define REALVIEW_INTREG_CARDINSERT 0x03 /* Signal insertion of MMC card */ + +/* + * RealView common peripheral addresses + */ +#define REALVIEW_SCTL_BASE 0x10001000 /* System controller */ +#define REALVIEW_I2C_BASE 0x10002000 /* I2C control */ +#define REALVIEW_AACI_BASE 0x10004000 /* Audio */ +#define REALVIEW_MMCI0_BASE 0x10005000 /* MMC interface */ +#define REALVIEW_KMI0_BASE 0x10006000 /* KMI interface */ +#define REALVIEW_KMI1_BASE 0x10007000 /* KMI 2nd interface */ +#define REALVIEW_CHAR_LCD_BASE 0x10008000 /* Character LCD */ +#define REALVIEW_SCI_BASE 0x1000E000 /* Smart card controller */ +#define REALVIEW_GPIO1_BASE 0x10014000 /* GPIO port 1 */ +#define REALVIEW_GPIO2_BASE 0x10015000 /* GPIO port 2 */ +#define REALVIEW_DMC_BASE 0x10018000 /* DMC configuration */ +#define REALVIEW_DMAC_BASE 0x10030000 /* DMA controller */ + +/* PCI space */ +#define REALVIEW_PCI_BASE 0x41000000 /* PCI Interface */ +#define REALVIEW_PCI_CFG_BASE 0x42000000 +#define REALVIEW_PCI_MEM_BASE0 0x44000000 +#define REALVIEW_PCI_MEM_BASE1 0x50000000 +#define REALVIEW_PCI_MEM_BASE2 0x60000000 +/* Sizes of above maps */ +#define REALVIEW_PCI_BASE_SIZE 0x01000000 +#define REALVIEW_PCI_CFG_BASE_SIZE 0x02000000 +#define REALVIEW_PCI_MEM_BASE0_SIZE 0x0c000000 /* 32Mb */ +#define REALVIEW_PCI_MEM_BASE1_SIZE 0x10000000 /* 256Mb */ +#define REALVIEW_PCI_MEM_BASE2_SIZE 0x10000000 /* 256Mb */ + +#define REALVIEW_SDRAM67_BASE 0x70000000 /* SDRAM banks 6 and 7 */ +#define REALVIEW_LT_BASE 0x80000000 /* Logic Tile expansion */ + +/* + * CompactFlash + */ +#define REALVIEW_CF_BASE 0x18000000 /* CompactFlash */ +#define REALVIEW_CF_MEM_BASE 0x18003000 /* SMC for CompactFlash */ + +/* + * Disk on Chip + */ +#define REALVIEW_DOC_BASE 0x2C000000 +#define REALVIEW_DOC_SIZE (16 << 20) +#define REALVIEW_DOC_PAGE_SIZE 512 +#define REALVIEW_DOC_TOTAL_PAGES (DOC_SIZE / PAGE_SIZE) + +#define ERASE_UNIT_PAGES 32 +#define START_PAGE 0x80 + +/* + * LED settings, bits [7:0] + */ +#define REALVIEW_SYS_LED0 (1 << 0) +#define REALVIEW_SYS_LED1 (1 << 1) +#define REALVIEW_SYS_LED2 (1 << 2) +#define REALVIEW_SYS_LED3 (1 << 3) +#define REALVIEW_SYS_LED4 (1 << 4) +#define REALVIEW_SYS_LED5 (1 << 5) +#define REALVIEW_SYS_LED6 (1 << 6) +#define REALVIEW_SYS_LED7 (1 << 7) + +#define ALL_LEDS 0xFF + +#define LED_BANK REALVIEW_SYS_LED + +/* + * Control registers + */ +#define REALVIEW_IDFIELD_OFFSET 0x0 /* RealView build information */ +#define REALVIEW_FLASHPROG_OFFSET 0x4 /* Flash devices */ +#define REALVIEW_INTREG_OFFSET 0x8 /* Interrupt control */ +#define REALVIEW_DECODE_OFFSET 0xC /* Fitted logic modules */ + +/* + * Clean base - dummy + * + */ +#define CLEAN_BASE REALVIEW_BOOT_ROM_HI + +/* + * System controller bit assignment + */ +#define REALVIEW_REFCLK 0 +#define REALVIEW_TIMCLK 1 + +#define REALVIEW_TIMER1_EnSel 15 +#define REALVIEW_TIMER2_EnSel 17 +#define REALVIEW_TIMER3_EnSel 19 +#define REALVIEW_TIMER4_EnSel 21 + +#define MAX_TIMER 2 +#define MAX_PERIOD 699050 +#define TICKS_PER_uSEC 1 + +/* + * These are useconds NOT ticks. + * + */ +#define mSEC_1 1000 +#define mSEC_5 (mSEC_1 * 5) +#define mSEC_10 (mSEC_1 * 10) +#define mSEC_25 (mSEC_1 * 25) +#define SEC_1 (mSEC_1 * 1000) + +#define REALVIEW_CSR_BASE 0x10000000 +#define REALVIEW_CSR_SIZE 0x10000000 + +#endif diff --git a/ports/arm7a/arm_timer.c b/ports/arm7a/arm_timer.c new file mode 100644 index 0000000..8a64676 --- /dev/null +++ b/ports/arm7a/arm_timer.c @@ -0,0 +1,102 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include +#include + +unsigned long long jiffies; + +void arm_timer_enable(void) +{ + uint32_t ctrl; + + ctrl = arm_readl((void *)(REALVIEW_PBA8_TIMER0_1_BASE + TIMER_CTRL)); + ctrl |= TIMER_CTRL_ENABLE; + arm_writel(ctrl, (void *)(REALVIEW_PBA8_TIMER0_1_BASE + TIMER_CTRL)); +} + +void arm_timer_disable(void) +{ + uint32_t ctrl; + + ctrl = arm_readl((void *)(REALVIEW_PBA8_TIMER0_1_BASE + TIMER_CTRL)); + ctrl &= ~TIMER_CTRL_ENABLE; + arm_writel(ctrl, (void *)(REALVIEW_PBA8_TIMER0_1_BASE + TIMER_CTRL)); +} + +void arm_timer_clearirq(void) +{ + arm_writel(1, (void *)(REALVIEW_PBA8_TIMER0_1_BASE + TIMER_INTCLR)); +} + +int arm_timer_irqhndl(uint32_t irq_no, pt_regs_t * regs) +{ + /* Call the interrupt entry routine */ + atomIntEnter(); + + /* Call the OS system tick handler */ + atomTimerTick(); + + /* Call the interrupt exit routine */ + atomIntExit(TRUE); + + arm_timer_clearirq(); + + return 0; +} + +int arm_timer_init(uint32_t usecs, uint32_t ensel) +{ + uint32_t val; + + /* + * set clock frequency: + * REALVIEW_REFCLK is 32KHz + * REALVIEW_TIMCLK is 1MHz + */ + val = arm_readl((void *)REALVIEW_SCTL_BASE) | (REALVIEW_TIMCLK << ensel); + arm_writel(val, (void *)REALVIEW_SCTL_BASE); + + /* Register interrupt handler */ + arm_irq_register(IRQ_PBA8_TIMER0_1, &arm_timer_irqhndl); + + val = arm_readl((void *)(REALVIEW_PBA8_TIMER0_1_BASE + TIMER_CTRL)); + val &= ~TIMER_CTRL_ENABLE; + val |= (TIMER_CTRL_32BIT | TIMER_CTRL_PERIODIC | TIMER_CTRL_IE); + arm_writel(val, (void *)(REALVIEW_PBA8_TIMER0_1_BASE + TIMER_CTRL)); + arm_writel(usecs, (void *)(REALVIEW_PBA8_TIMER0_1_BASE + TIMER_LOAD)); + arm_writel(usecs, (void *)(REALVIEW_PBA8_TIMER0_1_BASE + TIMER_VALUE)); + + return 0; +} diff --git a/ports/arm7a/arm_timer.h b/ports/arm7a/arm_timer.h new file mode 100644 index 0000000..45bf35c --- /dev/null +++ b/ports/arm7a/arm_timer.h @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +#ifndef __ARM_TIMER_H +#define __ARM_TIMER_H + +#include + +#define TIMER_LOAD 0x00 +#define TIMER_VALUE 0x04 +#define TIMER_CTRL 0x08 +#define TIMER_CTRL_ONESHOT (1 << 0) +#define TIMER_CTRL_32BIT (1 << 1) +#define TIMER_CTRL_DIV1 (0 << 2) +#define TIMER_CTRL_DIV16 (1 << 2) +#define TIMER_CTRL_DIV256 (2 << 2) +#define TIMER_CTRL_IE (1 << 5) /* Interrupt Enable (versatile only) */ +#define TIMER_CTRL_PERIODIC (1 << 6) +#define TIMER_CTRL_ENABLE (1 << 7) + +#define TIMER_INTCLR 0x0c +#define TIMER_RIS 0x10 +#define TIMER_MIS 0x14 +#define TIMER_BGLOAD 0x18 + +void arm_timer_enable(void); +void arm_timer_disable(void); +void arm_timer_clearirq(void); +int arm_timer_init(uint32_t usecs, uint32_t ensel); + +#endif /* __ARM_TIMER_H */ diff --git a/ports/arm7a/arm_uart.c b/ports/arm7a/arm_uart.c new file mode 100644 index 0000000..9b423fa --- /dev/null +++ b/ports/arm7a/arm_uart.c @@ -0,0 +1,112 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include + +void arm_uart_putc(uint8_t ch) +{ + unsigned int base = 0x10009000; + if(ch=='\n') { + /* Wait until there is space in the FIFO */ + while (arm_readl((void*)(base + UART_PL01x_FR)) & UART_PL01x_FR_TXFF); + + /* Send the character */ + arm_writel('\r', (void*)(base + UART_PL01x_DR)); + } + + /* Wait until there is space in the FIFO */ + while (arm_readl((void*)(base + UART_PL01x_FR)) & UART_PL01x_FR_TXFF); + + /* Send the character */ + arm_writel(ch, (void*)(base + UART_PL01x_DR)); +} + +uint8_t arm_uart_getc(void) +{ + unsigned int base = 0x10009000; + uint8_t data; + + /* Wait until there is data in the FIFO */ + while (arm_readl((void*)(base + UART_PL01x_FR)) & UART_PL01x_FR_RXFE); + + data = arm_readl((void*)(base + UART_PL01x_DR)); + + /* Check for an error flag */ + if (data & 0xFFFFFF00) { + /* Clear the error */ + arm_writel(0xFFFFFFFF, (void*)(base + UART_PL01x_ECR)); + return -1; + } + + return data; +} + +void arm_uart_init(void) +{ + unsigned int base = 0x10009000; + unsigned int baudrate = 115200; + unsigned int input_clock = 24000000; + unsigned int divider; + unsigned int temp; + unsigned int remainder; + unsigned int fraction; + + /* First, disable everything */ + arm_writel(0x0, (void*)(base + UART_PL011_CR)); + + /* + * Set baud rate + * + * IBRD = UART_CLK / (16 * BAUD_RATE) + * FBRD = RND((64 * MOD(UART_CLK,(16 * BAUD_RATE))) + * / (16 * BAUD_RATE)) + */ + temp = 16 * baudrate; + divider = input_clock / temp; + remainder = input_clock % temp; + temp = (8 * remainder) / baudrate; + fraction = (temp >> 1) + (temp & 1); + + arm_writel(divider, (void*)(base + UART_PL011_IBRD)); + arm_writel(fraction, (void*)(base + UART_PL011_FBRD)); + + /* Set the UART to be 8 bits, 1 stop bit, + * no parity, fifo enabled + */ + arm_writel((UART_PL011_LCRH_WLEN_8 | UART_PL011_LCRH_FEN), + (void*)(base + UART_PL011_LCRH)); + + /* Finally, enable the UART */ + arm_writel((UART_PL011_CR_UARTEN | + UART_PL011_CR_TXE | + UART_PL011_CR_RXE), + (void*)(base + UART_PL011_CR)); +} + diff --git a/ports/arm7a/arm_uart.h b/ports/arm7a/arm_uart.h new file mode 100644 index 0000000..67d47d1 --- /dev/null +++ b/ports/arm7a/arm_uart.h @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __ARM_UART_H_ +#define __ARM_UART_H_ + +#include + +/* + * ARM PrimeCell UART's (PL010 & PL011) + * ------------------------------------ + * + * Definitions common to both PL010 & PL011 + * + */ +#define UART_PL01x_DR 0x00 /* Data read or written from the interface. */ +#define UART_PL01x_RSR 0x04 /* Receive status register (Read). */ +#define UART_PL01x_ECR 0x04 /* Error clear register (Write). */ +#define UART_PL01x_FR 0x18 /* Flag register (Read only). */ + +#define UART_PL01x_RSR_OE 0x08 +#define UART_PL01x_RSR_BE 0x04 +#define UART_PL01x_RSR_PE 0x02 +#define UART_PL01x_RSR_FE 0x01 + +#define UART_PL01x_FR_TXFE 0x80 +#define UART_PL01x_FR_RXFF 0x40 +#define UART_PL01x_FR_TXFF 0x20 +#define UART_PL01x_FR_RXFE 0x10 +#define UART_PL01x_FR_BUSY 0x08 +#define UART_PL01x_FR_TMSK (UART_PL01x_FR_TXFF + UART_PL01x_FR_BUSY) + +/* + * PL011 definitions + * + */ +#define UART_PL011_IBRD 0x24 +#define UART_PL011_FBRD 0x28 +#define UART_PL011_LCRH 0x2C +#define UART_PL011_CR 0x30 +#define UART_PL011_IMSC 0x38 +#define UART_PL011_PERIPH_ID0 0xFE0 + +#define UART_PL011_LCRH_SPS (1 << 7) +#define UART_PL011_LCRH_WLEN_8 (3 << 5) +#define UART_PL011_LCRH_WLEN_7 (2 << 5) +#define UART_PL011_LCRH_WLEN_6 (1 << 5) +#define UART_PL011_LCRH_WLEN_5 (0 << 5) +#define UART_PL011_LCRH_FEN (1 << 4) +#define UART_PL011_LCRH_STP2 (1 << 3) +#define UART_PL011_LCRH_EPS (1 << 2) +#define UART_PL011_LCRH_PEN (1 << 1) +#define UART_PL011_LCRH_BRK (1 << 0) + +#define UART_PL011_CR_CTSEN (1 << 15) +#define UART_PL011_CR_RTSEN (1 << 14) +#define UART_PL011_CR_OUT2 (1 << 13) +#define UART_PL011_CR_OUT1 (1 << 12) +#define UART_PL011_CR_RTS (1 << 11) +#define UART_PL011_CR_DTR (1 << 10) +#define UART_PL011_CR_RXE (1 << 9) +#define UART_PL011_CR_TXE (1 << 8) +#define UART_PL011_CR_LPE (1 << 7) +#define UART_PL011_CR_IIRLP (1 << 2) +#define UART_PL011_CR_SIREN (1 << 1) +#define UART_PL011_CR_UARTEN (1 << 0) + +#define UART_PL011_IMSC_OEIM (1 << 10) +#define UART_PL011_IMSC_BEIM (1 << 9) +#define UART_PL011_IMSC_PEIM (1 << 8) +#define UART_PL011_IMSC_FEIM (1 << 7) +#define UART_PL011_IMSC_RTIM (1 << 6) +#define UART_PL011_IMSC_TXIM (1 << 5) +#define UART_PL011_IMSC_RXIM (1 << 4) +#define UART_PL011_IMSC_DSRMIM (1 << 3) +#define UART_PL011_IMSC_DCDMIM (1 << 2) +#define UART_PL011_IMSC_CTSMIM (1 << 1) +#define UART_PL011_IMSC_RIMIM (1 << 0) + +uint8_t arm_uart_getc(void); +void arm_uart_putc(uint8_t ch); +void arm_uart_init(void); + +#endif /* __ARM_UART_H_ */ diff --git a/ports/arm7a/atomport-asm.s b/ports/arm7a/atomport-asm.s new file mode 100644 index 0000000..b211585 --- /dev/null +++ b/ports/arm7a/atomport-asm.s @@ -0,0 +1,58 @@ +/* + * Copyright (c) 2010, Atomthreads Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +.section .text + +/** + * Function that performs the contextSwitch. Whether its a voluntary release + * of CPU by thread or a pre-emption, under both conditions this function is + * called. The signature is as follows: + * + * archContextSwitch(ATOM_TCB *old_tcb, ATOM_TCB *new_tcb) + */ +.globl archContextSwitch +archContextSwitch: + bx lr + +/** + * archFirstThreadRestore(ATOM_TCB *new_tcb) + * + * This function is responsible for restoring and starting the first + * thread the OS runs. It expects to find the thread context exactly + * as it would be if a context save had previously taken place on it. + * The only real difference between this and the archContextSwitch() + * routine is that there is no previous thread for which context must + * be saved. + * + * The final action this function must do is to restore interrupts. + */ +.globl archFirstThreadRestore +archFirstThreadRestore: + bx lr + diff --git a/ports/arm7a/atomport-private.h b/ports/arm7a/atomport-private.h new file mode 100644 index 0000000..a6e8aad --- /dev/null +++ b/ports/arm7a/atomport-private.h @@ -0,0 +1,53 @@ +/* + * Copyright (c) 2010, Atomthreads Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __ATOMPORT_PRIVATE_H_ +#define __ATOMPORT_PRIVATE_H_ + +#define CPSR_MODE_MASK 0x0000001f +#define CPSR_MODE_USER 0x00000010 +#define CPSR_MODE_FIQ 0x00000011 +#define CPSR_MODE_IRQ 0x00000012 +#define CPSR_MODE_SUPERVISOR 0x00000013 +#define CPSR_MODE_ABORT 0x00000017 +#define CPSR_MODE_UNDEFINED 0x0000001b +#define CPSR_MODE_SYSTEM 0x0000001f + +#define CPSR_THUMB_ENABLED (1 << 5) +#define CPSR_FIQ_DISABLED (1 << 6) +#define CPSR_IRQ_DISABLED (1 << 7) +#define CPSR_ASYNC_ABORT_DISABLED (1 << 8) +#define CPSR_BE_ENABLED (1 << 9) + +#define CPSR_COND_OVERFLOW (1 << 28) +#define CPSR_COND_CARRY (1 << 29) +#define CPSR_COND_ZERO (1 << 30) +#define CPSR_COND_NEGATIVE (1 << 31) + +#endif /* __ATOMPORT_PRIVATE_H_ */ diff --git a/ports/arm7a/atomport-tests.h b/ports/arm7a/atomport-tests.h new file mode 100644 index 0000000..d76e27d --- /dev/null +++ b/ports/arm7a/atomport-tests.h @@ -0,0 +1,48 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __ATOM_PORT_TESTS_H +#define __ATOM_PORT_TESTS_H + +/* Include Atomthreads kernel API */ +#include "atom.h" + +/* Logger macro for viewing test results */ +/* FIXME: Add uart out routine once uart is supported */ +#define ATOMLOG printk +#define _STR + +/* Default thread stack size (in bytes) */ +#define TEST_THREAD_STACK_SIZE 8192 + +/* Uncomment to enable logging of stack usage to UART */ +/* #define TESTS_LOG_STACK_USAGE */ + +#endif /* __ATOM_PORT_TESTS_H */ + diff --git a/ports/arm7a/atomport.c b/ports/arm7a/atomport.c new file mode 100644 index 0000000..c2019d8 --- /dev/null +++ b/ports/arm7a/atomport.c @@ -0,0 +1,58 @@ +/* + * Copyright (c) 2011, Anup Patel for Atomthreads Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include + +/** + * This function initialises each thread's stack during creation, before the + * thread is first run. New threads are scheduled in using the same + * context-switch function used for threads which were previously scheduled + * out, therefore this function should set up a stack context which looks + * much like a thread which has been scheduled out and had its context saved. + * We fill part of the stack with those registers which are involved in the + * context switch, including appropriate stack or register contents to cause + * the thread to branch to its entry point function when it is scheduled in. + * + * Interrupts should also be enabled whenever a thread is restored, hence + * ports may wish to explicitly include the interrupt-enable register here + * which will be restored when the thread is scheduled in. Other methods + * can be used to enable interrupts, however, without explicitly storing + * it in the thread's context. + */ +void archThreadContextInit (ATOM_TCB *tcb_ptr, void *stack_top, + void (*entry_point)(UINT32), + UINT32 entry_param) +{ + +} + diff --git a/ports/arm7a/atomport.h b/ports/arm7a/atomport.h new file mode 100644 index 0000000..73b19e3 --- /dev/null +++ b/ports/arm7a/atomport.h @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __ATOM_PORT_H +#define __ATOM_PORT_H + +/* Required number of system ticks per second (normally 100 for 10ms tick) */ +#define SYSTEM_TICKS_PER_SEC 100 + +typedef signed int int32_t; +typedef signed short int16_t; +typedef signed char int8_t; +typedef unsigned int uint32_t; +typedef unsigned short uint16_t; +typedef unsigned char uint8_t; +typedef long long int64_t; +typedef unsigned long size_t; + +typedef unsigned int irq_flags_t; +typedef unsigned int virtual_addr_t; +typedef unsigned int virtual_size_t; +typedef unsigned int physical_addr_t; +typedef unsigned int physical_size_t; +typedef unsigned int clock_freq_t; +typedef unsigned long long jiffies_t; + +#define UINT32 uint32_t +#define STACK_ALIGN_SIZE sizeof(uint32_t) +#define NULL ((void *)(0)) + +/** + * Architecture-specific types. + * Most of these are available from stdint.h on this platform, which is + * included above. + */ +#define POINTER void * + +struct pt_regs { + uint32_t cpsr; // Current Program Status + uint32_t gpr[13]; // R0 - R12 + uint32_t sp; + uint32_t lr; + uint32_t pc; +} __attribute ((packed)) ; +typedef struct pt_regs pt_regs_t; + +#include + +extern uint32_t at_preempt_count; + +#if 0 +/* Critical region protection */ +#define CRITICAL_STORE uint32_t status_reg +#define CRITICAL_START() \ + do { \ + extern uint32_t at_preempt_count; \ + at_preempt_count++; \ + }while(0); + +#define CRITICAL_END() \ + do { \ + extern uint32_t at_preempt_count; \ + if (at_preempt_count == 0) { \ + printk("BUG: Preempt count is zero!\n"); \ + for(;;); \ + } \ + at_preempt_count--; \ + \ + if (at_preempt_count == 0) { \ + if (atomCurrentContext()) { \ + } \ + } \ + \ + }while(0); +#else +#define CRITICAL_STORE +#define CRITICAL_START() +#define CRITICAL_END() +#endif + +/* Uncomment to enable stack-checking */ +/* #define ATOM_STACK_CHECKING */ + +#endif /* __ATOM_PORT_H */ diff --git a/ports/arm7a/linker.ld b/ports/arm7a/linker.ld new file mode 100755 index 0000000..8af91e3 --- /dev/null +++ b/ports/arm7a/linker.ld @@ -0,0 +1,138 @@ +/* + * Copyright (c) 2011, Anup Patel. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. No personal names or organizations' names associated with the + * Atomthreads project may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH("arm") +ENTRY(_start_vect) + +SECTIONS +{ + . = 0x100000; + + .text : + { + *(.expvect) + *(.text) + . = ALIGN(4); + _etext = .; + } + + .data : + { + *(.data) + . = ALIGN(4); + _edata = .; + } + + .bss : + { + *(.bss) + . = ALIGN(4); + _ebss = .; + } + + .rodata : + { + *(.rodata .rodata.*) + . = ALIGN(4); + _erodata = .; + } + + .cmdbtl : + { + PROVIDE(_cmdtbl_start = .); + *(.cmdtbl) + . = ALIGN(4); + PROVIDE(_cmdtbl_end = .); + } + + .modtbl : + { + PROVIDE(_modtbl_start = .); + *(.modtbl) + . = ALIGN(4); + PROVIDE(_modtbl_end = .); + } + + .svc_stack : + { + PROVIDE(_svc_stack_start = .); + . = . + 4096; + . = ALIGN(4); + PROVIDE(_svc_stack_end = .); + } + + .mon_stack : + { + PROVIDE(_mon_stack_start = .); + . = . + 4096; + . = ALIGN(4); + PROVIDE(_mon_stack_end = .); + } + + .abt_stack : + { + PROVIDE(_abt_stack_start = .); + . = . + 4096; + . = ALIGN(4); + PROVIDE(_abt_stack_end = .); + } + + .und_stack : + { + PROVIDE(_und_stack_start = .); + . = . + 4096; + . = ALIGN(4); + PROVIDE(_und_stack_end = .); + } + + .irq_stack : + { + PROVIDE(_irq_stack_start = .); + . = . + 4096; + . = ALIGN(4); + PROVIDE(_irq_stack_end = .); + } + + .fiq_stack : + { + PROVIDE(_fiq_stack_start = .); + . = . + 4096; + . = ALIGN(4); + PROVIDE(_fiq_stack_end = .); + } + + .usr_stack : + { + PROVIDE(_usr_stack_start = .); + . = . + 4096; + . = ALIGN(4); + PROVIDE(_usr_stack_end = .); + } +} diff --git a/ports/arm7a/printk.c b/ports/arm7a/printk.c new file mode 100644 index 0000000..99d137f --- /dev/null +++ b/ports/arm7a/printk.c @@ -0,0 +1,59 @@ +/* + * Copyright (c) Himanshu Chauhan 2009-11. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of Himanshu Chauhan nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include + +static int8_t buf[2048]; + +/* Uses the above routine to output a string... */ +void puts(const uint8_t *text) +{ + int32_t i; + + for (i = 0; i < strlen((const int8_t *)text); i++) { + arm_uart_putc(text[i]); + } +} + +void printk(const char *format, ...) +{ + va_list args; + int i; + + va_start(args, format); + i = vsprintf(buf, (const int8_t *)format, args); + va_end(args); + + puts((const uint8_t *)buf); +} + diff --git a/ports/arm7a/printk.h b/ports/arm7a/printk.h new file mode 100644 index 0000000..bd1b192 --- /dev/null +++ b/ports/arm7a/printk.h @@ -0,0 +1,42 @@ +/* + * This file is part of Freax kernel. + * + * Copyright (c) Himanshu Chauhan 2009-10. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of Himanshu Chauhan nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _PRINTK_H +#define _PRINTK_H + +#include "atomport.h" + +extern void putch (uint8_t ch); +extern void puts (const uint8_t *text); +extern void printk (const char*format, ...); + +#endif diff --git a/ports/arm7a/stdarg.h b/ports/arm7a/stdarg.h new file mode 100755 index 0000000..fd79ec0 --- /dev/null +++ b/ports/arm7a/stdarg.h @@ -0,0 +1,28 @@ +#ifndef _STDARG_H +#define _STDARG_H + +typedef char *va_list; + +/* Amount of space required in an argument list for an arg of type TYPE. + TYPE may alternatively be an expression whose type is used. */ + +#define __va_rounded_size(TYPE) \ + (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int)) + +#ifndef __sparc__ +#define va_start(AP, LASTARG) \ + (AP = ((char *) &(LASTARG) + __va_rounded_size (LASTARG))) +#else +#define va_start(AP, LASTARG) \ + (__builtin_saveregs (), \ + AP = ((char *) &(LASTARG) + __va_rounded_size (LASTARG))) +#endif + +void va_end (va_list); /* Defined in gnulib */ +#define va_end(AP) + +#define va_arg(AP, TYPE) \ + (AP += __va_rounded_size (TYPE), \ + *((TYPE *) (AP - __va_rounded_size (TYPE)))) + +#endif /* _STDARG_H */ diff --git a/ports/arm7a/string.c b/ports/arm7a/string.c new file mode 100644 index 0000000..b99b529 --- /dev/null +++ b/ports/arm7a/string.c @@ -0,0 +1,61 @@ +/* + * Copyright (c) Himanshu Chauhan 2009-11. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of Himanshu Chauhan nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include + +void *memcpy(void *dest, const void *src, size_t count) +{ + const int8_t *sp = (const int8_t *)src; + int8_t *dp = (int8_t *)dest; + for(; count != 0; count--) *dp++ = *sp++; + return dest; +} + +void *memset(void *dest, int8_t val, size_t count) +{ + int8_t *temp = (int8_t *)dest; + for( ; count != 0; count--) *temp++ = val; + return dest; +} + +uint16_t *memsetw(uint16_t *dest, uint16_t val, size_t count) +{ + uint16_t *temp = (uint16_t *)dest; + for( ; count != 0; count--) *temp++ = val; + return dest; +} + +size_t strlen(const int8_t *str) +{ + size_t retval; + for(retval = 0; *str != '\0'; str++) retval++; + return retval; +} diff --git a/ports/arm7a/string.h b/ports/arm7a/string.h new file mode 100644 index 0000000..bbccc25 --- /dev/null +++ b/ports/arm7a/string.h @@ -0,0 +1,42 @@ +/* + * Copyright (c) Himanshu Chauhan 2009-11. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of Himanshu Chauhan nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __STRING_H +#define __STRING_H + +#include + +void *memcpy(void *dest, const void *src, size_t count); +void *memset(void *dest, int8_t val, size_t count); +uint16_t *memsetw(uint16_t *dest, uint16_t val, size_t count); +size_t strlen(const int8_t *str); + +#endif /* __STRING_H */ + diff --git a/ports/arm7a/system.h b/ports/arm7a/system.h new file mode 100644 index 0000000..b8c25ad --- /dev/null +++ b/ports/arm7a/system.h @@ -0,0 +1,52 @@ +/* + * Copyright (c) Himanshu Chauhan 2009-11. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of Himanshu Chauhan nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _SYSTEM_H +#define _SYSTEM_H + +#include +#include + +extern const uint8_t *kernel_name; +extern const uint8_t *kernel_version; +extern const uint8_t *kernel_bdate; +extern const uint8_t *kernel_btime; + +extern void *memcpy (void *dest, const void *src, size_t count); +extern void *memset (void *dest, int8_t val, size_t count); +extern uint16_t *memsetw (uint16_t *dest, uint16_t val, size_t count); +extern size_t strlen (const int8_t *str); +extern int vsprintf (int8_t *buf, const int8_t *fmt, va_list args); +extern void init_console (void); +extern int32_t arch_init (void); +extern uint8_t ioreadb (void *addr); +extern void iowriteb (void *addr, uint8_t data); + +#endif /* _SYSTEM_H */ diff --git a/ports/arm7a/vsprintf.c b/ports/arm7a/vsprintf.c new file mode 100644 index 0000000..c8819fd --- /dev/null +++ b/ports/arm7a/vsprintf.c @@ -0,0 +1,244 @@ +/* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */ +/* + * Wirzenius wrote this portably, Torvalds fucked it up :-) + * and Himanshu Fucked it up further :)) + */ + +#include +#include +#include + +/* we use this so that we can do without the ctype library */ +#define is_digit(c) ((c) >= '0' && (c) <= '9') + +static int skip_atoi(const int8_t **s) +{ + int i=0; + + while (is_digit(**s)) + i = i*10 + *((*s)++) - '0'; + return i; +} + +#define ZEROPAD 1 /* pad with zero */ +#define SIGN 2 /* unsigned/signed long */ +#define PLUS 4 /* show plus */ +#define SPACE 8 /* space if plus */ +#define LEFT 16 /* left justified */ +#define SPECIAL 32 /* 0x */ +#define SMALL 64 /* use 'abcdef' instead of 'ABCDEF' */ + +/*#define do_div(n,base) ({ \ +int __res; \ +__asm__("divl %4":"=a" (n),"=d" (__res):"0" (n),"1" (0),"r" (base)); \ +__res; })*/ + +static uint32_t do_div (int32_t *n, int32_t base) +{ + uint32_t remainder = *n % base; + *n /= base; + return remainder; +} + +static int8_t * number(int8_t * str, int num, int32_t base, + int32_t size, int32_t precision, int32_t type) +{ + int8_t c,sign,tmp[36]; + const int8_t *digits=(const int8_t *)"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"; + int32_t i; + + if (type & SMALL) digits = (const int8_t *)"0123456789abcdefghijklmnopqrstuvwxyz"; + if (type & LEFT) type &= ~ZEROPAD; + if (base < 2 || base > 36) + return 0; + c = (type & ZEROPAD) ? '0' : ' ' ; + if (type & SIGN && num < 0) { + sign = '-'; + num = -num; + } else + sign = (type & PLUS) ? '+' : ((type & SPACE) ? ' ' : 0); + if (sign) size--; + + if (type & SPECIAL) { + if (base == 16) { + size -= 2; + } else if (base == 8) { + size--; + } + } + + i = 0; + if (num == 0) + tmp[i++] = '0'; + else while (num != 0) + tmp[i++] = digits[do_div(&num,base)]; + if (i > precision) precision = i; + size -= precision; + if (!(type & (ZEROPAD + LEFT))) + while(size-- > 0) + *str++ = ' '; + if (sign) + *str++ = sign; + if (type & SPECIAL) { + if (base == 8) { + *str++ = '0'; + } else if (base == 16) { + *str++ = '0'; + *str++ = digits[33]; + } + } + + if (!(type & LEFT)) + while(size-- > 0) + *str++ = c; + while(i < precision--) + *str++ = '0'; + while(i-- > 0) + *str++ = tmp[i]; + while(size-- > 0) + *str++ = ' '; + return str; +} + +int32_t vsprintf (int8_t *buf, const int8_t *fmt, va_list args) +{ + int32_t len; + int32_t i; + int8_t * str; + int8_t *s; + int32_t *ip; + + int32_t flags; /* flags to number() */ + + int32_t field_width; /* width of output field */ + int32_t precision; /* min. # of digits for integers; max + number of chars for from string */ + int32_t qualifier; /* 'h', 'l', or 'L' for integer fields */ + + for (str=buf ; *fmt ; ++fmt) { + if (*fmt != '%') { + *str++ = *fmt; + continue; + } + + /* process flags */ + flags = 0; + repeat: + ++fmt; /* this also skips first '%' */ + switch (*fmt) { + case '-': flags |= LEFT; goto repeat; + case '+': flags |= PLUS; goto repeat; + case ' ': flags |= SPACE; goto repeat; + case '#': flags |= SPECIAL; goto repeat; + case '0': flags |= ZEROPAD; goto repeat; + } + + /* get field width */ + field_width = -1; + if (is_digit(*fmt)) + field_width = skip_atoi(&fmt); + else if (*fmt == '*') { + /* it's the next argument */ + field_width = va_arg(args, int); + if (field_width < 0) { + field_width = -field_width; + flags |= LEFT; + } + } + + /* get the precision */ + precision = -1; + if (*fmt == '.') { + ++fmt; + if (is_digit(*fmt)) + precision = skip_atoi(&fmt); + else if (*fmt == '*') { + /* it's the next argument */ + precision = va_arg(args, int); + } + if (precision < 0) + precision = 0; + } + + /* get the conversion qualifier */ + qualifier = -1; + if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L') { + qualifier = *fmt; + ++fmt; + } + + switch (*fmt) { + case 'c': + if (!(flags & LEFT)) + while (--field_width > 0) + *str++ = ' '; + *str++ = (unsigned char) va_arg(args, int); + while (--field_width > 0) + *str++ = ' '; + break; + + case 's': + s = va_arg(args, int8_t *); + len = strlen(s); + if (precision < 0) + precision = len; + else if (len > precision) + len = precision; + + if (!(flags & LEFT)) + while (len < field_width--) + *str++ = ' '; + for (i = 0; i < len; ++i) + *str++ = *s++; + while (len < field_width--) + *str++ = ' '; + break; + + case 'o': + str = number(str, va_arg(args, unsigned long), 8, + field_width, precision, flags); + break; + + case 'p': + if (field_width == -1) { + field_width = 8; + flags |= ZEROPAD; + } + str = number(str, + (unsigned long) va_arg(args, void *), 16, + field_width, precision, flags); + break; + + case 'x': + flags |= SMALL; + case 'X': + str = number(str, va_arg(args, unsigned long), 16, + field_width, precision, flags); + break; + + case 'd': + case 'i': + flags |= SIGN; + case 'u': + str = number(str, va_arg(args, unsigned long), 10, + field_width, precision, flags); + break; + + case 'n': + ip = va_arg(args, int32_t *); + *ip = (str - buf); + break; + + default: + if (*fmt != '%') + *str++ = '%'; + if (*fmt) + *str++ = *fmt; + else + --fmt; + break; + } + } + *str = '\0'; + return str-buf; +}