Merge branch 'master' into sam460ex

2013-05-27 17:45:55 +02:00
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+# BeagleBone Black
+* http://beagleboard.org
+* TODO: This is a WIP
+
+# Hardware information (Rev A5A)
+
+* ARMv7 Architecture
+* Sitara AM3359AZCZ100 Cortex-A8 CPU @ 1 Ghz
+* PowerVR SGX530 3D GPU
+* eMMC Onboard Storage 2GB (MMC1)
+* SD Card Storage (MMC0)
+* 512 MB DDR3L RAM
+* Video Outputs
+  * HDMI Video Output (with audio)
+* SMSC LAN8710A Ethernet
+
+# Setting up the Haiku SD card
+
+The BeagleBone Black supports booting from an microSD card while the boot switch is pressed at power on. A MBR file system layout is normally used as seen 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
+
+* MLO
+* u-boot.img: u-Boot image
+* uEnv.txt: u-Boot Environment settings
+
+### Optional files
+
+* ID.txt: Unknown
+
+# Compiling
+
+*  Build an ARM toolchain using `./configure --build-cross-tools-gcc4 arm ../buildtools`
+*  Build our loader using `jam -q -sHAIKU_BOOT_BOARD=beagleboneblk haiku_loader`
+*  TODO
+
+# Booting
+
+1. If the boot switch is not depressed:
+   MMC1, MMC0, UART0, USB0
+2. If the boot switch is depressed:
+   SPI0, MMC0, USB0, UART0
+
+# Additional information
+
+* [CircutCo WikiPage](http://circuitco.com/support/index.php?title=BeagleBoneBlack)
+* [BeagleBone Black A5A SRM](https://github.com/CircuitCo/BeagleBone-Black/blob/master/BBB_SRM.pdf?raw=true)
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+# 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
+
+*  Build an ARM toolchain using `./configure --build-cross-tools-gcc4 arm ../buildtools`
+*  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)
+