板子是tiny6410，内核是友善的2.6.38，启动参数已经改成root=/dev/mmcblk0 rootfstype=ext3 noinitrd rw console=ttySAC0,115200;
SD卡和文件系统应该都没问题，此SD卡能做superboot启动，文件系统我也做成过ubi镜像烧到flash里启动成功过，就是现在想试试从SD卡启动，不知道哪里还没设置对，请高手指点一下，以下是部分启动信息，个人认为关键的地方：
USB Video Class driver (v1.0.0)
S3C2410 Watchdog Timer, (c) 2004 Simtec Electronics
s3c2410-wdt s3c2410-wdt: watchdog inactive, reset disabled, irq enabled
one_wire_status: 5
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
s3c-sdhci s3c-sdhci.0: clock source 0: hsmmc (133000000 Hz)
s3c-sdhci s3c-sdhci.0: clock source 1: hsmmc (133000000 Hz)
s3c-sdhci s3c-sdhci.0: clock source 2: mmc_bus (24000000 Hz)
mmc0: SDHCI controller on samsung-hsmmc [s3c-sdhci.0] using ADMA
s3c-sdhci s3c-sdhci.1: clock source 0: hsmmc (133000000 Hz)
one_wire_status: 4
s3c-sdhci s3c-sdhci.1: clock source 1: hsmmc (133000000 Hz)
s3c-sdhci s3c-sdhci.1: clock source 2: mmc_bus (24000000 Hz)
mmc1: SDHCI controller on samsung-hsmmc [s3c-sdhci.1] using ADMA
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
mmc0: new high speed SD card at address 55e9
mmcblk0: mmc0:55e9 SD02G 1.83 GiB
mmcblk0:
asoc: wm9713-hifi <-> samsung-ac97 mapping ok
ALSA device list:
#0: MINI6410
TCP cubic registered
NET: Registered protocol family 17
VFP support v0.3: implementor 41 architecture 1 part 20 variant b rev 5
s3c-rtc s3c64xx-rtc: setting system clock to 2011-08-04 12:11:52 UTC (1312459912)
Freeing init memory: 1408K
FAT: utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
FAT: utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
yaffs: dev is 32505858 name is "mtdblock2" rw
yaffs: passed flags ""
/init: line 103: can't open /r/dev/console: no such file
Kernel panic - not syncing: Attempted to kill init!
[<c0177c44>] (unwind_backtrace+0x0/0xe4) from [<c05147a8>] (panic+0x58/0x174)
[<c05147a8>] (panic+0x58/0x174) from [<c0189e48>] (do_exit+0x68/0x5e4)
[<c0189e48>] (do_exit+0x68/0x5e4) from [<c018a688>] (do_group_exit+0x90/0xc4)
[<c018a688>] (do_group_exit+0x90/0xc4) from [<c018a6cc>] (sys_exit_group+0x10/0x18)
one_wire_status: 2
[<c018a6cc>] (sys_exit_group+0x10/0x18) from [<c01725e0>] (ret_fast_syscall+0x0/0x30)
one_wire_status: 4
