Rpi: Update instructions based on mmlr's recent work
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##### Overclocking
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# WARNING: Don't adjust unless you know what you are doing!
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#arm_freq=800
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#gpu_freq=350
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#core_freq=250
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#h264_freq=250
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#isp_freq=250
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#v3d_freq=250
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#sdram_freq=250
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#over_voltage=0
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#over_voltage_sdram=0
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#over_voltage_sdram_c=0
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#over_voltage_sdram_i=0
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#over_voltage_sdram_p=0
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##### CPU Speed
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#arm_freq 700
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##### Memory layout
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#gpu_mem 64
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##### Video
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#sdtv_mode=0
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#sdtv_aspect=1
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#hdmi_mode=19
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#hdmi_drive=
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#test_mode=0
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#disable_overscan=0
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enable_l2cache=1
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# Memory based on model.. overrides gpu_mem
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#gpu_mem_256 64
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#gpu_mem_512 64
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##### Low level
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kernel=haiku_loader
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kernel_address=0x0
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ramfsfile=haiku-floppyboot.tgz
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ramfsaddr=0x04000000
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# Skip boot tags for non-linux platforms
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disable_commandline_tags=1
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#kernel_address=
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#device_tree=bcm2835.dtb
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#device_tree_address=0x100
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##### UART Settings
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# Default is 115200
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#init_uart_baud=9600
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@ -1,33 +1,34 @@
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Setting up the Haiku boot partition
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-------------------------------------
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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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The boot partition must contain the following files to boot Haiku:
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* bootcode.bin : 2nd stage bootloader, starts with SDRAM disabled
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* loader.bin : 3rd stage bootloader, starts with SDRAM enabled
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* start.elf: The GPU binary firmware image, provided by the foundation.
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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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Additional GPU firmware images, rename over start.elf to use them:
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* arm128_start.elf : 128M ARM, 128M GPU split
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- use this for heavy 3D work, possibly also required for some video decoding)
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* arm192_start.elf : 192M ARM, 64M GPU split
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- this is the default
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* arm224_start.elf : 224M ARM, 32M GPU split
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- (use this for Linux only with no 3D or video processing.
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Enough for the 1080p framebuffer, but not much else)
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Building
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-------------------------------------
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jam -q -sHAIKU_BOOT_BOARD=raspberry_pi -sHAIKU_BOOT_PLATFORM=raspberrypi_arm haiku_loader
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jam -q -sHAIKU_BOOT_BOARD=raspberry_pi -sHAIKU_BOOT_PLATFORM=raspberrypi_arm haiku-floppyboot.tgz
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config.txt options
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-------------------------------------
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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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-------------------------------------
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* Latest Raspberry Pi firmware:
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http://github.com/raspberrypi/firmware/tree/master/boot
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* config.txt options:
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http://www.elinux.org/RPiconfig
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