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updating top level readme and changing uart examples to use the 0x8000 base address

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David Welch
2012-06-20 01:00:49 -04:00
parent 267b154b8e
commit 0d1a778e72
7 changed files with 8 additions and 15 deletions
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3
README
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@@ -105,7 +105,8 @@ my examples). go to the firmware directory and then the boot directory.
For each of these files, bootcode.bin, loader.bin, start.elf (NOT For each of these files, bootcode.bin, loader.bin, start.elf (NOT
kernel.img, dont need it, too big). Click on the file name, it will kernel.img, dont need it, too big). Click on the file name, it will
go to another page then click on View Raw and it will let you download go to another page then click on View Raw and it will let you download
the file. the file. For reference, I do not use nor have a config.txt file on my
sd card. I only have the four files.
bootcode.bin is about 2MBytes, the other files are smaller, so you will bootcode.bin is about 2MBytes, the other files are smaller, so you will
want an sd card that is at least a few meg, probably a full 128MBytes or want an sd card that is at least a few meg, probably a full 128MBytes or

2
uart01/memmap
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@@ -1,7 +1,7 @@
MEMORY MEMORY
{ {
ram : ORIGIN = 0x00000000, LENGTH = 0x1000 ram : ORIGIN = 0x8000, LENGTH = 0x1000
} }
SECTIONS SECTIONS

5
uart01/vectors.s
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@@ -1,10 +1,7 @@
.globl _start .globl _start
_start: _start:
b reset mov sp,#0x8000
reset:
mov sp,#0x1000
bl notmain bl notmain
hang: b hang hang: b hang

2
uart02/memmap
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@@ -1,7 +1,7 @@
MEMORY MEMORY
{ {
ram : ORIGIN = 0x00000000, LENGTH = 0x1000 ram : ORIGIN = 0x8000, LENGTH = 0x1000
} }
SECTIONS SECTIONS

5
uart02/vectors.s
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@@ -1,10 +1,7 @@
.globl _start .globl _start
_start: _start:
b reset mov sp,#0x8000
reset:
mov sp,#0x1000
bl notmain bl notmain
hang: b hang hang: b hang

2
uart03/memmap
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@@ -1,7 +1,7 @@
MEMORY MEMORY
{ {
ram : ORIGIN = 0x00000000, LENGTH = 0x1000 ram : ORIGIN = 0x8000, LENGTH = 0x1000
} }
SECTIONS SECTIONS

4
uart03/novectors.s
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@@ -1,13 +1,11 @@
.globl _start .globl _start
_start: _start:
b reset
reset:
ldr sp,stack_start ldr sp,stack_start
ldr r0,thumb_start_add ldr r0,thumb_start_add
bx r0 bx r0
stack_start: .word 0x1000 stack_start: .word 0x8000
thumb_start_add: .word thumb_start thumb_start_add: .word thumb_start
.word 0 .word 0
.word 0 .word 0