2013-04-28 21:37:00 +04:00
|
|
|
# Raspberry Pi
|
|
|
|
|
* http://raspberrypi.org
|
|
|
|
|
|
|
|
|
|
# Hardware Information
|
|
|
|
|
|
|
|
|
|
* ARMv6 Architecture
|
|
|
|
|
* Broadcom BCM2835 (SoC)
|
|
|
|
|
* Includes ARM1176JZF-S CPU @ 700 MHz
|
|
|
|
|
* Includes VideoCore IV GPU
|
|
|
|
|
* SD Card Storage
|
|
|
|
|
* 256 or 512 MB RAM (depending on revision)
|
|
|
|
|
* Video Outputs
|
|
|
|
|
* HDMI Video Output
|
|
|
|
|
* Composite Video Output
|
|
|
|
|
* Ethernet
|
|
|
|
|
|
|
|
|
|
# Setting up the Haiku SD card
|
|
|
|
|
|
|
|
|
|
The Raspberry Pi SD card generally uses the MBR file system layout below. Partition 1 is all that is required to boot an OS.
|
|
|
|
|
|
|
|
|
|
* partition 1 -- FAT32, bootable flag, type 'c'
|
|
|
|
|
* partition 2 -- BeFS, Haiku filesystem, type 'eb'
|
|
|
|
|
|
|
|
|
|
## Boot Partition
|
|
|
|
|
|
|
|
|
|
### Required Files
|
|
|
|
|
|
|
|
|
|
* bootcode.bin : 2nd stage bootloader
|
|
|
|
|
* start.elf: The GPU binary firmware image
|
|
|
|
|
* haiku_loader: Haiku Loader
|
|
|
|
|
* haiku-floppyboot.tgz: Compressed image with Haiku kernel
|
|
|
|
|
* config.txt: A configuration file read by the GPU.
|
|
|
|
|
|
|
|
|
|
### Optional Files
|
|
|
|
|
|
|
|
|
|
* vlls directory: Additional GPU code, e.g. extra codecs.
|
|
|
|
|
|
|
|
|
|
# Compiling
|
|
|
|
|
|
2014-02-10 09:44:57 +04:00
|
|
|
* Create your work directory `mkdir generated.arm; cd generated.arm`
|
|
|
|
|
* Build an ARM toolchain using `../configure --build-cross-tools arm ../../buildtools`
|
2013-04-28 21:37:00 +04:00
|
|
|
* Build our loader using `jam -q -sHAIKU_BOOT_BOARD=raspberry_pi -sHAIKU_BOOT_PLATFORM=raspberrypi_arm haiku_loader`
|
|
|
|
|
* Build our file system using `jam -q -sHAIKU_BOOT_BOARD=raspberry_pi -sHAIKU_BOOT_PLATFORM=raspberrypi_arm haiku-floppyboot.tgz`
|
|
|
|
|
|
|
|
|
|
# Booting
|
|
|
|
|
|
|
|
|
|
1. SOC finds bootcode.bin
|
|
|
|
|
2. bootcode.bin runs start.elf
|
|
|
|
|
2. start.elf reads config.txt and cmdline.txt
|
|
|
|
|
3. start.elf runs specified binary at specified address
|
|
|
|
|
|
|
|
|
|
## config.txt Options
|
|
|
|
|
|
|
|
|
|
kernel=haiku_loader
|
|
|
|
|
kernel_address=0x0
|
|
|
|
|
disable_commandline_tags=1
|
|
|
|
|
ramfsfile=haiku-floppyboot.tgz
|
|
|
|
|
ramfsaddr=0x04000000
|
|
|
|
|
|
|
|
|
|
# Additional Information
|
|
|
|
|
|
|
|
|
|
* [Latest Raspberry Pi firmware](http://github.com/raspberrypi/firmware/tree/master/boot)
|
|
|
|
|
* [config.txt options](http://www.elinux.org/RPiconfig)
|
|
|
|
|
|
