移植u-boot-2011.03到S3C2440（utu2440）的方法與步驟###8. u-boot引導啟動nand flash中核心和根檔案系統cramfs和使用者檔案系統yaffs2支援
rivers/rtc/hctosys.c: unable to open rtc device (rtc0)
uncorrectable error : <3>uncorrectable error : <3>end_request: I/O error, dev mtdblock2, sector 0
Buffer I/O error on device mtdblock2, logical block 0
uncorrectable error : <3>uncorrectable error : <3>end_request: I/O error, dev mtdblock2, sector 0
Buffer I/O error on device mtdblock2, logical block 0
end_request: I/O error, dev mtdblock2, sector 8
Buffer I/O error on device mtdblock2, logical block 1
end_request: I/O error, dev mtdblock2, sector 8
Buffer I/O error on device mtdblock2, logical block 1
uncorrectable error : <3>uncorrectable error : <3>end_request: I/O error, dev mtdblock2, sector 16
Buffer I/O error on device mtdblock2, logical block 2
uncorrectable error : <3>uncorrectable error : <3>end_request: I/O error, dev mtdblock2, sector 16
Buffer I/O error on device mtdblock2, logical block 2
uncorrectable error : <3>uncorrectable error : <3>end_request: I/O error, dev mtdblock2, sector 24
Buffer I/O error on device mtdblock2, logical block 3
uncorrectable error : <3>uncorrectable error : <3>end_request: I/O error, dev mtdblock2, sector 24
Buffer I/O error on device mtdblock2, logical block 3
uncorrectable error : <3>uncorrectable error : <3>end_request: I/O error, dev mtdblock2, sector 0
FAT: unable to read boot sector
VFS: Cannot open root device "mtdblock2" or unknown-block(31,2)
Please append a correct "root=" boot option; here are the available partitions:
1f00 384 mtdblock0 (driver?)
1f01 2048 mtdblock1 (driver?)
1f02 2048 mtdblock2 (driver?)
1f03 61056 mtdblock3 (driver?)
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(31,2)
Backtrace:
[<c0026908>] (dump_backtrace+0x0/0x12c) from [<c0026a4c>] (dump_stack+0x18/0x1c)
r7:c3809000 r6:c001e8d0 r5:c03958fc r4:c3809007
[<c0026a34>] (dump_stack+0x0/0x1c) from [<c0033b6c>] (panic+0x40/0x118)
[<c0033b2c>] (panic+0x0/0x118) from [<c0008d78>] (mount_block_root+0xfc/0x24c)
r3:00000000 r2:20000013 r1:c381df54 r0:c0315f3c
[<c0008c7c>] (mount_block_root+0x0/0x24c) from [<c0008f94>] (mount_root+0xcc/0xec)
[<c0008ec8>] (mount_root+0x0/0xec) from [<c00090ac>] (prepare_namespace+0xf8/0x194)
r6:c03952c4 r5:c001e888 r4:c001e88c
[<c0008fb4>] (prepare_namespace+0x0/0x194) from [<c0008a2c>] (kernel_init+0xc8/0xf4)
r6:c001d44c r5:c001d0fc r4:c03952b8
[<c0008964>] (kernel_init+0x0/0xf4) from [<c003617c>] (do_exit+0x0/0x670)
r6:00000000 r5:00000000 r4:00000000
開始以為是u-boot的啟動引數不對所致，但改來改去，終是這個錯誤。後面在網上找到了解決方法，原因不是u-boot的啟動引數導致的，而是自己移植的linux核心中NAND FLASH的ECC所致。