README.hardware: add beagleboard documentation
Document the install and boot process for the Beagleboard xM with provisions for the C4. I need someone with a C4 board to validate the steps. Signed-off-by: Darren Hart <dvhart@linux.intel.com> CC: Tom Zanussi <tom.zanussi@intel.com> CC: Bruce Ashfield <bruce.ashfield@windriver.com> CC: Scott Rifenbark <scott.m.rifenbark@intel.com>
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@ -26,6 +26,7 @@ The following boards are supported by Poky:
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* Marvell PXA3xx Zylonite (zylonite)
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* Logic iMX31 Lite Kit (mx31litekit)
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* Phytec phyCORE-iMX31 (mx31phy)
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* Texas Instruments Beagleboard (beagleboard)
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For more information see board's section below. The Poky MACHINE setting
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corresponding to the board is given in brackets.
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@ -509,3 +510,73 @@ USB Device:
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For more details on the USB-ZIP scenario, see the syslinux documentation:
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http://git.kernel.org/?p=boot/syslinux/syslinux.git;a=blob_plain;f=doc/usbkey.txt;hb=HEAD
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Texas Instruments Beagleboard (beagleboard)
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===========================================
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The Beagleboard is an ARM Cortex-A8 development board with USB, DVI-D, S-Video,
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2D/3D accelerated graphics, audio, serial, JTAG, and SD/MMC. The xM adds a
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faster CPU, more RAM, an ethernet port, more USB ports, microSD, and removes
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the NAND flash. The beagleboard MACHINE is tested on the following platforms:
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o Beagleboard xM
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TODO: need someone with a Beagleboard C4 to verify these instructions.
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Due to the lack of NAND on the xM, the install and boot process varies a bit
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between boards. The C4 can run the x-loader and u-boot binaries from NAND or
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the SD, while the xM can only run them from the SD. The following instructions
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apply to both the C4 and the xM, but te C4 can skip step 2 (as noted below),
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and may require modification of the NAND environment.
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1. Partition and format an SD card:
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# fdisk -lu /dev/mmcblk0
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Disk /dev/mmcblk0: 3951 MB, 3951034368 bytes
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255 heads, 63 sectors/track, 480 cylinders, total 7716864 sectors
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Units = sectors of 1 * 512 = 512 bytes
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Device Boot Start End Blocks Id System
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/dev/mmcblk0p1 * 63 144584 72261 c Win95 FAT32 (LBA)
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/dev/mmcblk0p2 144585 465884 160650 83 Linux
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# mkfs.vfat -F 16 -n "boot" /dev/mmcblk0p1
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# mke2fs -j -L "root" /dev/mmcblk0p2
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The following assumes the SD card partition 1 and 2 are mounted at
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/media/boot and /media/root respectively. The files referenced here
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are made available after the build in build/tmp/deploy/images.
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2. Install the boot loaders
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This step can be omitted for the C4 as it can have the x-loader and
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u-boot installed in NAND.
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# cp MLO-beagleboard /media/boot/MLO
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# cp u-boot-beagleboard.bin /media/boot/u-boot.bin
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3. Install the root filesystem
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# tar x -C /media/root -f poky-image-$IMAGE_TYPE-beagleboard.tar.bz2
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# tar x -C /media/root -f modules-$KERNEL_VERSION-beagleboard.tgz
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4. Install the kernel uImage
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# cp uImage-beagleboard.bin /media/boot/uImage
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5. Prepare a u-boot script to simplify the boot process
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The Beagleboard can be made to boot at this point from the u-boot command
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shell. To automate this process, generate a user.scr script as follows.
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Install uboot-mkimage (from uboot-mkimage on Ubuntu or uboot-tools on Fedora).
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Prepare a script config:
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# (cat << EOF
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setenv bootcmd 'mmc init; fatload mmc 0:1 0x80300000 uImage; bootm 0x80300000'
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setenv bootargs 'console=tty0 console=ttyS2,115200n8 root=/dev/mmcblk0p2 rootwait rootfstype=ext3 ro'
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boot
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EOF
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) > serial-boot.cmd
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# mkimage -A arm -O linux -T script -C none -a 0 -e 0 -n "Poky Minimal" -d ./serial-boot.cmd ./user.scr
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# cp user.scr /media/boot
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6. Unmount the SD partitions and boot the Beagleboard
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