[yocto] Freescale T1040RDB Failed to mount UBIFS

[Leo Tao]

Hi,

I built UBIFS rootfs for T1040RDB, apparently I got 2 rootfs images:
1. fsl-image-core-t1040rdb-20150408204106.rootfs.ubi
2. fsl-image-core-t1040rdb-20150408204106.rootfs.ubifs
So I updated  Nand Flash rootfs Partition with  image :fsl-image-core-t1040rdb-20150408204106.rootfs.ubifs

Uboot bootcmd : bootcmd=setenv bootargs noinitrd ip=off mem=256M rootwait=1 rw ubi.mtd=7,4096 rootfstype=ubifs root=ubi0:rootfs console=$consoledev,$baudrate $othbootargs;nand read.e $loadaddr $kernel_addr $kernel_size;nand read.e $fdtaddr $fdt_addr $fdt_size;bootm $loadaddr - $fdtaddr

My question is

1.       which image should be flashed to Nand, xxx.ubi or xxx.ubifs?

2.       what does the error blow mean?

Built uboot and kernel to support ubifs and reset  T1040RDB, but I got error blow:

Key type dns_resolver registered
UBI: attaching mtd7 to ubi0
UBI error: validate_ec_hdr: bad VID header offset 512, expected 4096
UBI error: validate_ec_hdr: bad EC header
Erase counter header dump:
        magic          0x55424923
        version        1
        ec             0
        vid_hdr_offset 512
        data_offset    1024
        image_seq      2076921562
        hdr_crc        0x951adef
erase counter header hexdump:
CPU: 2 PID: 1 Comm: swapper/0 Not tainted 3.12.19-rt30-QorIQ-SDK-V1.7+g6619b8b #6
Call Trace:
[c9081cd0] [c0006f50] show_stack+0x40/0x150 (unreliable)
[c9081d10] [c06e9a20] dump_stack+0x78/0xa0
[c9081d20] [c03a56ac] validate_ec_hdr+0xac/0x120
[c9081d30] [c03a6104] ubi_io_read_ec_hdr+0x184/0x240
[c9081d60] [c03aaf00] ubi_attach+0x180/0x14d0
[c9081de0] [c039fdf8] ubi_attach_mtd_dev+0x688/0xc80
[c9081e30] [c08e9348] ubi_init+0x274/0x30c
[c9081e80] [c00021a8] do_one_initcall+0x158/0x1b0
[c9081ef0] [c08cb8d0] kernel_init_freeable+0x134/0x1d0
[c9081f20] [c0002808] kernel_init+0x18/0x170
[c9081f40] [c000fe0c] ret_from_kernel_thread+0x5c/0x64
UBI error: ubi_io_read_ec_hdr: validation failed for PEB 0
UBI error: ubi_attach_mtd_dev: failed to attach mtd7, error -22
UBI error: ubi_init: cannot attach mtd7
fsl_dpa_macless: FSL DPAA MACless Ethernet driver ()
fsl_dpa_generic: FSL DPAA Generic Ethernet driver ()
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
UBIFS error (pid 1): ubifs_mount: cannot open "ubi0:rootfs", error -19
VFS: Cannot open root device "ubi0:rootfs" or unknown-block(0,0): error -19
Please append a correct "root=" boot option; here are the available partitions:
1f00          131072 mtdblock0  (driver?)
1f01            1536 mtdblock1  (driver?)
1f02            1024 mtdblock2  (driver?)
1f03            1024 mtdblock3  (driver?)
1f04           24576 mtdblock4  (driver?)
1f05           10240 mtdblock5  (driver?)
1f06            1024 mtdblock6  (driver?)
1f07          409600 mtdblock7  (driver?)
1f08           98304 mtdblock8  (driver?)
1f09          524288 mtdblock9  (driver?)
1f0a           65536 mtdblock10  (driver?)
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
CPU: 2 PID: 1 Comm: swapper/0 Not tainted 3.12.19-rt30-QorIQ-SDK-V1.7+g66
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