On 16 December 2015 at 12:16, Arnd Bergmann arnd@arndb.de wrote:
On Wednesday 16 December 2015 11:34:30 Tyler Baker wrote:
- bcm4708-smartrg-sr400ac doesn't find its rootfs any more
[ 16.670994] No filesystem could mount root, tried: ext3 ext2 ext4 squashfs vfat msdos ntfs [ 16.679388] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)
I merged some patches from Florian yesterday, but it could also be a problem with the defconfig changes
The bisection pointed to b02ec7658c98 ("ARM: multi_v7_defconfig: Enable some drivers for LS1021A")
I've rebased my tree with arm-soc for-next, and reverted the commits listed above. Should know shortly if the reverts fix the boot issues.
I've looked at the built-in drivers to see if they might do something on unrelated hardware (we've had bugs like that before), but didn't find anything: the watchdog and cpufreq drivers all look sane, everything else is a loadable module.
One possible explanation would be a buggy bootloader that fails to pass a correct initrd and/or dtb if the kernel image gets too big.
Do you know if there is an initrd that is passed on this platform?
There is, and if I disable only CONFIG_BLK_DEV_RAM the bcm4708-smartrg-sr400ac boots again. This platform runs a CFE bootloader, and this is these are the kernel arguments injected into the DT - "console=ttyS0,115200 initrd=0x4000000,8M root=/dev/ram0 ip=dhcp".
I'm still investigating the rk3288 failures, and will report back when I find something.
Cheers,
Tyler