107ab75ea6
* Convert the RaspberryPi documentation to markdown * Move into the proper arm port docs location
64 lines
1.7 KiB
Markdown
64 lines
1.7 KiB
Markdown
# Raspberry Pi
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* http://raspberrypi.org
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# Hardware Information
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* ARMv6 Architecture
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* Broadcom BCM2835 (SoC)
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* Includes ARM1176JZF-S CPU @ 700 MHz
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* Includes VideoCore IV GPU
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* SD Card Storage
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* 256 or 512 MB RAM (depending on revision)
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* Video Outputs
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* HDMI Video Output
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* Composite Video Output
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* Ethernet
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# Setting up the Haiku SD card
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The Raspberry Pi SD card generally uses the MBR file system layout below. Partition 1 is all that is required to boot an OS.
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* partition 1 -- FAT32, bootable flag, type 'c'
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* partition 2 -- BeFS, Haiku filesystem, type 'eb'
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## Boot Partition
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### Required Files
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* bootcode.bin : 2nd stage bootloader
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* start.elf: The GPU binary firmware image
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* haiku_loader: Haiku Loader
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* haiku-floppyboot.tgz: Compressed image with Haiku kernel
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* config.txt: A configuration file read by the GPU.
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### Optional Files
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* vlls directory: Additional GPU code, e.g. extra codecs.
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# Compiling
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* Build an ARM toolchain using `./configure --build-cross-tools-gcc4 arm ../buildtools`
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* Build our loader using `jam -q -sHAIKU_BOOT_BOARD=raspberry_pi -sHAIKU_BOOT_PLATFORM=raspberrypi_arm haiku_loader`
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* Build our file system using `jam -q -sHAIKU_BOOT_BOARD=raspberry_pi -sHAIKU_BOOT_PLATFORM=raspberrypi_arm haiku-floppyboot.tgz`
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# Booting
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1. SOC finds bootcode.bin
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2. bootcode.bin runs start.elf
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2. start.elf reads config.txt and cmdline.txt
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3. start.elf runs specified binary at specified address
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## config.txt Options
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kernel=haiku_loader
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kernel_address=0x0
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disable_commandline_tags=1
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ramfsfile=haiku-floppyboot.tgz
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ramfsaddr=0x04000000
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# Additional Information
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* [Latest Raspberry Pi firmware](http://github.com/raspberrypi/firmware/tree/master/boot)
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* [config.txt options](http://www.elinux.org/RPiconfig)
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