On 28-9-2010 22:16, Vasily Khoruzhick wrote: > On 28 of September 2010 14:00:43 dylan cristiani wrote: >> Hi sirs, here is my scenario: kernel 2.6.36-rc4; cpu pxa270; platform >> is an enhancement (i like to see things that way...) and customisation >> of the mainstone III board; here comes the (my) problem: if i boot with >> my standard kernel boot command line (to boot from system flash): >> 'root=/dev/mtdblock2 rootfstype=jffs2 mem=64M console=ttyS0,115200n8' >> >> i can get the rootfs up, and the SD card is up too, and correctly >> working; here's the relevant kernel log: >> >> .... >> XScale iWMMXt coprocessor detected. >> rtc-ds1307 0-0068: setting system clock to 2010-09-28 03:03:08 UTC >> (1285642988) >> pxa27x-udc pxa27x-udc: USB reset >> mmc0: new SD card at address aaaa >> mmcblk0: mmc0:aaaa SD02G 1.84 GiB >> mmcblk0: p1 >> pxa27x-udc pxa27x-udc: USB reset >> ..... >> >> then the rootfs coems up properly. >> >> Else, if i try to boot the rootfs directly form the SD card, with >> kernel boot command line: >> 'root=/dev/mmcblk0p1 rootfstype=ext2 mem=64M console=ttyS0,115200n8' >> >> <cut> >> Kernel panic - not syncing: VFS: Unable to mount root fs on >> unknown-block(0,0) > It seems you're missing rootdelay=[0-9]+ argument to kernel I guess the default of rootdelay=1 (sec) should do, no? Also try the rootwait argument, which goes without parameters: root=/dev/mmcblk0p1 rootwait rootfstype=ext2 mem=64M console=ttyS0,115200n8 Hein -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
