一点失敗したのがD-SUBケーブル。メスメスの変換コネクタを用意していなかったので、PCのシリアルと直結できなかった。たまたまメスメスのシリアルケーブルがあったのでよかった。ドキュメントにもnull modemケーブルを用意せよと書いてあった。


  • Rev C3ボードについているUSB Hostポートは、HS(USB2.0)のみ対応。USB1.0/1.1のデバイスは接続不可
  • USB OTGポートなら何でもいける


115200baud, 8bit, none, 1bitで接続。

Texas Instruments X-Loader 1.4.2 (Feb 19 2009 - 12:01:24)
Loading u-boot.bin from nand

U-Boot 2009.01-dirty (Feb 19 2009 - 12:22:31)

I2C:   ready
OMAP3530-GP rev 2, CPU-OPP2 L3-165MHz
OMAP3 Beagle board + LPDDR/NAND
DRAM:  256 MB
NAND:  256 MiB
*** Warning - bad CRC or NAND, using default environment

MUSB: using high speed
In:    serial usbtty
Out:   serial usbtty
Err:   serial usbtty
Board revision C
Serial #05d4000300000000040323090c01200f
Hit any key to stop autoboot:  0
No MMC card found
Booting from nand ...

NAND read: device 0 offset 0x280000, size 0x400000
 4194304 bytes read: OK
Wrong Image Format for bootm command
ERROR: can't get kernel image!
OMAP3 # help
?       - alias for 'help'
autoscr - run script from memory
base    - print or set address offset
bdinfo  - print Board Info structure
boot    - boot default, i.e., run 'bootcmd'
bootd   - boot default, i.e., run 'bootcmd'
bootm   - boot application image from memory
cmp     - memory compare
coninfo - print console devices and information
cp      - memory copy
crc32   - checksum calculation
echo    - echo args to console
exit    - exit script
ext2load- load binary file from a Ext2 filesystem
ext2ls  - list files in a directory (default /)
fatinfo - print information about filesystem
fatload - load binary file from a dos filesystem
fatls   - list files in a directory (default /)
fsinfo  - print information about filesystems
fsload  - load binary file from a filesystem image
go      - start application at address 'addr'
help    - print online help
ibus    - ibus - I2C bus selection

icrc32  - checksum calculation
iloop   - infinite loop on address range
imd     - i2c memory display
imm     - i2c memory modify (auto-incrementing)
imw     - memory write (fill)
imxtract- extract a part of a multi-image
inm     - memory modify (constant address)
iprobe  - probe to discover valid I2C chip addresses
itest   - return true/false on integer compare
loadb   - load binary file over serial line (kermit mode)
loads   - load S-Record file over serial line
loady   - load binary file over serial line (ymodem mode)
loop    - infinite loop on address range
ls      - list files in a directory (default /)
md      - memory display
mm      - memory modify (auto-incrementing)
mmcinit - init mmc card
mtest   - simple RAM test
mw      - memory write (fill)
nand    - NAND sub-system
nandecc - nandecc - switch OMAP3 NAND ECC calculation algorithm

nboot   - boot from NAND device
nm      - memory modify (constant address)
printenv- print environment variables
reset   - Perform RESET of the CPU
run     - run commands in an environment variable
saveenv - save environment variables to persistent storage
setenv  - set environment variables
showvar - print local hushshell variables
sleep   - delay execution for some time
test    - minimal test like /bin/sh
version - print monitor version
OMAP3 # bdinfo
arch_number = 0x0000060A
env_t       = 0x00000000
boot_params = 0x80000100
DRAM bank   = 0x00000000
-> start    = 0x80000000
-> size     = 0x08000000
DRAM bank   = 0x00000001
-> start    = 0x88000000
-> size     = 0x08000000

baudrate    = 115200 bps
OMAP3 # coninfo
List of available devices:
serial   80000003 SIO
usbtty   00000003 .IO stdin stdout stderr
OMAP3 # printenv-
Unknown command 'printenv-' - try 'help'
OMAP3 # printenv
bootcmd=if mmcinit; then if run loadbootscript; then run bootscript; else if run loaduimage; then if run loadramdisk; then run ramboot; else run mmcboot; fi; else run nandboot; fi; fi; else run nandboot; fi
mmcargs=setenv bootargs console=${console} ${optargs} root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait
ramargs=setenv bootargs console=${console} ${optargs} root=/dev/ram0 rw ramdisk_size=32768 initrd=${rdaddr},32M
ubifsargs=setenv bootargs console=${console} ${optargs} root=ubi0:beagleroot ubi.mtd=4 rw rootfstype=ubifs
jffs2args=setenv bootargs console=${console} ${optargs} root=/dev/mtdblock4 rw rootfstype=jffs2
loadbootscript=fatload mmc 0 ${loadaddr} boot.scr
bootscript=echo Running bootscript from mmc ...; autoscr ${loadaddr}
loaduimage=fatload mmc 0 ${loadaddr} uImage.bin
loadramdisk=fatload mmc 0 ${rdaddr} ramdisk.gz
ramboot=echo Booting from ramdisk.gz ...; run ramargs; bootm ${loadaddr}
mmcboot=echo Booting from mmc ...; run mmcargs; bootm ${loadaddr}
nandboot=echo Booting from nand ...; run jffs2args; nand read ${loadaddr} 280000 400000; bootm ${loadaddr}
bootargs=console=ttyS2,115200n8 root=/dev/mtdblock4 rw rootfstype=jffs2

Environment size: 1372/131068 bytes
OMAP3 # version

U-Boot 2009.01-dirty (Feb 19 2009 - 12:22:31)