Start fails with Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

[paulmenzel]

Downloading http://repo.fe80.eu/screwdriver/0.3.0/omap/generic/default/openwrt-0.3.0-omap-beagleboneblack-sdcard-vfat-am335x_evm.img, and writing it to a 16 GB microSDHC card, putting it into the BeagleBone Black, it halts with the Linux kernel panic below.

[    0.983590] vdd_3v3aux: at 3300 mV
[    0.988237] vdd_1v8: 1800 mV
[    0.992356] vdd_3v3a: at 3300 mV
[    0.996527] tps65217 0-0024: TPS65217 ID 0xe version 1.2
[    1.002230] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz
[    1.008242] mmc1: BKOPS_EN bit is not set
[    1.033719] mmc1: new high speed MMC card at address 0001
[    1.040042] mmcblk1: mmc1:0001 S10004 3.56 GiB
[    1.045202] mmcblk1boot0: mmc1:0001 S10004 partition 1 4.00 MiB
[    1.051626] mmcblk1boot1: mmc1:0001 S10004 partition 2 4.00 MiB
[    1.058897]  mmcblk1: p1
[    1.070326] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6
[    1.076733] davinci_mdio 4a101000.mdio: detected phy mask fffffffe
[    1.083908] libphy: 4a101000.mdio: probed
[    1.088123] davinci_mdio 4a101000.mdio: phy[0]: device 4a101000.mdio:00, driver unknown
[    1.097231] cpsw 4a100000.ethernet: Detected MACID = 88:c2:55:6d:b4:7f
[    1.105223] omap_rtc 44e3e000.rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
[    1.118518] ALSA device list:
[    1.121723]   No soundcards found.
[    1.126899] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
[    1.134883] Please append a correct "root=" boot option; here are the available partitions:
[    1.143690] b300        15159296 mmcblk0  driver: mmcblk
[    1.149270]   b301           20480 mmcblk0p1 5452574f-01
[    1.154874]   b302           49152 mmcblk0p2 5452574f-02
[    1.160495] b308         3735552 mmcblk1  driver: mmcblk
[    1.166069]   b309         3734528 mmcblk1p1 00000000-01
[    1.171660] b318            4096 mmcblk1boot1  (driver?)
[    1.177235] b310            4096 mmcblk1boot0  (driver?)
[    1.182824] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[    1.191497] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

[hanetzer]

Also having the same issue. I've written the the image via dd on the bbb itself and via win32 disk imager.

[hanetzer]

interrupt boot and setenv bootargs console=ttyO0,115200n8 root=/dev/mmcblk0p2 and it gets to screwdriver.

adding bootargs=console=ttyO0,115200n8 root=/dev/mmcblk0p2 to uEnv.txt fixes permanently.

[paulmenzel]

Yes, that fixed it. Should this be added by default, or is this independent from the image?