OMAP3530 MINI V3 + 0xdroid

ICETEK OMAP3530 MINI V3號稱硬體跟beagle board相容.
由於mini board有512MB nand flash & DM9000 ethernet所以捨棄了beagle board.
但風險就是萬一硬體有不相容的地方就得自己搞了

http://code.google.com/p/beagleboard/wiki/BeagleSoftCompile

1.OMAP3530 boot
Boot對Embedded System是一件大事,就像生命的起源一般.
OMAP3530可以從nand flash or SD card boot,由x-loader開始.
x-loader負責初始化CUP,包含memory & nand flash,之後會載入並執行u-boot.

預設供電後由nand flash載入x-loader.
按住user button + reset button就會由SD card載入x-loader.

2.Compile x-loader

修改xloader/include/configs/omap3530Mini.h

/* NAND is partitioned:
 * 0x00000000 - 0x0007FFFF  Booting Image
 * 0x00080000 - 0x0025FFFF  U-Boot Image
 * 0x00260000 - 0x0027FFFF  U-Boot Env Data (X-loader doesn't care)
 * 0x00280000 - 0x0067FFFF  Kernel Image
 * 0x00680000 - 0x08000000  depends on application
 */
#define NAND_UBOOT_START    0x0080000 /* Leaving first 4 blocks for x-load */
#define NAND_UBOOT_END        0x0260000 /* Giving a space of 2 blocks = 256KB */
#define NAND_BLOCK_SIZE        0x20000

make
./signGP x-load.bin
mv x-load.bin.ift MLO

Build x-loader for nand boot

http://elinux.org/BeagleBoardNAND

Modify include/configs/omap3530mini.h

Disable CONFIG_MMC
//#define CONFIG_MMC 1

make
./signGP x-load.bin
Copy x-load.bin.ift to nand

3.Format SD Card

http://elinux.org/BeagleBoardBeginners

有一些細節要注意,就不再贅述
將MLO copy 到SD card FAT partition (FAT partition一定要是乾淨的)
將x-load.bin.ift copy到 FAT partition

4.Install pre-built 0xdroid images

複製uImage / 0xkernel-beagle.bin / android-beagle.ubi 到SD card FAT parition
退出SD card
Boot from SD card
進入u-boot command

由SD card更新nand flash上的檔案

Refresh x-load.bin.ift

OMAP3 MiniBoard # mmcinit
OMAP3 MiniBoard # fatload mmc 0 ${loadaddr} x-load.bin.ift
reading x-load.bin.ift

11332 bytes read
OMAP3 MiniBoard # nand unlock
Usage:
nand - NAND sub-system

OMAP3 MiniBoard # nand erase 0 40000

NAND erase: device 0 offset 0x0, size 0x40000
Erasing at 0x20000 -- 100% complete.
OK
OMAP3 MiniBoard # nandecc hw
HW ECC selected
OMAP3 MiniBoard # nand write ${loadaddr} 0 40000

NAND write: device 0 offset 0x0, size 0x40000
 262144 bytes written: OK
OMAP3 MiniBoard # nand lock
Usage:
nand - NAND sub-system

Refresh u-boot

OMAP3 MiniBoard # mmcinit
OMAP3 MiniBoard # fatload mmc 0 ${loadaddr} u-boot.bin
reading u-boot.bin

275904 bytes read
OMAP3 MiniBoard # nand erase 80000 1e0000

NAND erase: device 0 offset 0x80000, size 0x1e0000
Erasing at 0x140000 -- 100% complete.
OK
OMAP3 MiniBoard # nand write ${loadaddr} 80000 1e0000

NAND write: device 0 offset 0x80000, size 0x1e0000
 917504 bytes written: OK
OMAP3 MiniBoard #

Refresh uImage.bin

OMAP3 Miniboard # mmcinit
OMAP3 Miniboard # fatload mmc 0 ${loadaddr} uImage-beagle.bin
reading uImage-beagle.bin

2140524 bytes read
OMAP3 Miniboard # nand erase 280000 400000

NAND erase: device 0 offset 0x280000, size 0x400000
Erasing at 0x660000 -- 100% complete.
OK
OMAP3 Miniboard # nand write ${loadaddr} 280000 400000

NAND write: device 0 offset 0x280000, size 0x400000
 4194304 bytes written: OK

5.取出SD card, reboot to install 0xdroid automaticlly.
完成後reboot

6.u-boot environment variable

setenv ubifsargs 'setenv bootargs console=${console} init=/init omapdss.def_disp=dvi omapfb.mode=dvi:1280x1024MR-24@60 root=ubi0:rootfs ubi.mtd=4 rw rootfstype=ubifs'

setenv nandboot 'echo Booting from nand ...; run ubifsargs; nand read ${loadaddr} 280000 400000; bootm ${loadaddr}'

7.0xdroid works

Texas Instruments X-Loader 1.4.2 (Sep 24 2009 - 17:05:57)
MiniBoard V2.0: Run Xloader from SD card
Loading u-boot.bin from nand


U-Boot 2009.08-00217-g30d7aae-dirty ( 9月 24 2009 - 20:23:31)

OMAP3530-GP ES2.1, CPU-OPP2 L3-165MHz
OMAP3 Beagle board + LPDDR/NAND
DRAM:  256 MB
NAND:  512 MiB
In:    serial
Out:   serial
Err:   serial
Beagle Board rev C
Die ID #4b9a00020000000004031c1307010007
Hit any key to stop autoboot:  0
Unknown command 'mmcinit' - try 'help'
Booting from nand ...

NAND read: device 0 offset 0x280000, size 0x400000
 4194304 bytes read: OK
## Booting kernel from Legacy Image at 80200000 ...
   Image Name:   Linux-2.6.29-omap1-g327a826
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    2165760 Bytes =  2.1 MB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
OK

Starting kernel ...