166 lines
4.8 KiB
Markdown
166 lines
4.8 KiB
Markdown
# This is the RetroBSD source directory.
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## Source Roadmap
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bin User commands.
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etc Template files for /etc.
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include System include files.
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lib System libraries.
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libexec System binaries.
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sbin System administration commands.
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share Shared resources.
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sys Kernel sources.
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tools Build tools and simulators.
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## Supported hardware
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* chipKIT Max32 board.
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* Sparkfun UBW32 board.
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* Maximite and Colour Maximite computers.
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* Microchip Explorer 16 board, with PIC32 CAN-USB plug-in module and SD & MMC pictail.
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* Microchip PIC32 USB or Ethernet Starter Kit, with I/O Expansion board and SD & MMC pictail.
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* Olimex Duinomite, Duinomite-Mini and Duinomite-Mega boards.
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* Olimex Pinguino-Micro board with PIC32MX795F512H microcontroller.
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* eflightworks DIP board.
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## Build
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By default, the system is configured for the Max32 board.
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To select another target board, edit a top-level user-specific Makefile called "Makefile.user"
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and set a TARGET value:
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```Makefile
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TARGET = $(UBW32) # for the UBW32 board with USB console
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TARGET = $(UBW32UART) # for the UBW32 board with UART console
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TARGET = $(UBW32UARTSDRAM) # for the UBW32 boars with UART console and 8MB SRAM ramdisk
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TARGET = $(MAXIMITE) # for the Maximite board
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TARGET = $(MAXCOLOR) # for the Colour Maximite board
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TARGET = $(EXPLORER16) # for the Explorer 16 board
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TARGET = $(STARTERKIT) # for the PIC32 USB or Ethernet Starter Kit
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TARGET = $(MAX32) # default
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TARGET = $(DUINOMITE) # for the Duinomite board with USB console
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TARGET = $(DUINOMITEUART) # for the Duinomite board with UART console
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TARGET = $(DUINOMITEE) # for the Duinomite E board with USB console
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TARGET = $(DUINOMITEEUART) # for the Duinomite E board with UART console
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TARGET = $(PINGUINO) # for the Pinguino-Micro board
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TARGET = $(DIP) # for the DIP board
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TARGET = $(BAREMETAL) # Bare PIC32 chip on a breakout board
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TARGET = $(FUBARINO) # Fubarino SD board
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TARGET = $(FUBARINOBIG) # Fubarino SD board with 8MB SRAM RAMDISK
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TARGET = $(MMBMX7) # MMB MX7 board
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```
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You can also change a desired filesystem size and swap area size,
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as required. Default is:
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```Makefile
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FS_KBYTES = 16384
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SWAP_KBYTES = 2048
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```
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To compile the kernel and build a filesystem image, run:
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```shell
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$ make
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```
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A resulting root filesystem image is in file `sdcard.rd`.
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A kernel is in file `unix.hex` in your target board subdirectory.
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### Filesystem image
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You need to put a filesystem image on a SD card. On Windows, use
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Win32DiskImager utility (https://launchpad.net/win32-image-writer/+download).
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On Linux, run:
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```shell
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$ sudo dd if=sdcard.rd of=/dev/XYZ
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```
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Here `XYZ` is a device name of SD card, as recognized by Linux (sdb in my case).
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### Install kernel
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Kernel image should be written to PIC32 flash memory. The procedure depends
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on a board used.
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#### Max32 board:
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```shell
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$ cd sys/pic32/ubw32
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$ AVRTOOLS=/Applications/Mpide.app/Contents/Resources/Java/hardware/tools
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$AVRTOOLS/bin/avrdude -C$AVRTOOLS/etc/avrdude.conf -c stk500v2 -p pic32 \
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-P /dev/tty.usbserial-* -b 115200 -v -U flash:w:unix.hex:i
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```
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Here you need to change AVRTOOLS path and tty name according to your system.
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#### UBW32 board:
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Use a pic32prog utility (http://code.google.com/p/pic32prog/)
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and a USB cable to install a kernel:
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```shell
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$ pic32prog sys/pic32/ubw32/unix.hex
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```
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#### Maximite:
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Use the bootload program for Windows, available for download by link:
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http://geoffg.net/Downloads/Maximite/Maximite_Update_V2.7B.zip
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#### Explorer 16 board:
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There is an auxiliary PIC18 chip on the Explorer 16 board, which can be
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used as a built-in programmer device. You will need a PICkit 2 adapter
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to install a needed firmware, as described in article:
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http://www.paintyourdragon.com/?p=51
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(section "Hack #2: Lose the PICkit 2, Save $35").
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This should be done only once.
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Then, you can use a pic32prog utility (http://code.google.com/p/pic32prog/)
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and a USB cable to install a kernel:
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``` shell
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$ pic32prog sys/pic32/explorer16/unix.hex
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```
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#### PIC32 Starter Kit:
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Use PICkit 2 adapter and software to install a boot loader from
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file `sys/pic32/starter-kit/boot.hex`. This should be done only once.
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Then, you can use a pic32prog utility (http://code.google.com/p/pic32prog/)
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and a USB cable to install a kernel:
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```shell
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$ pic32prog sys/pic32/starter-kit/unix.hex
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```
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## Simulator
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You can use a MIPS32 simulator to develop a debug a RetroBSD software,
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without a need for hardware board. By default, a simulator is configured
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to imitate a Max32 board. To build it:
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```shell
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$ cd tools/virtualmips
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$ make
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```
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Run it:
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```shell
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$ ./pic32
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```
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Configuration of simulated board is stored in file `pic32_max32.conf`.
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## Build packages
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For building under Ubuntu you need the following packages installed:
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```shell
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$ sudo apt-get install byacc libelf-dev
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```
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