[U-Boot] Can't read kernel if bad blocks are present in partition

Scott Wood
2012-04-27T17:39:35Z

On 04/27/2012 09:29 AM, Peter Barada wrote:
> On 04/27/2012 03:16 AM, Alexandre Gambier wrote:
>> Hi,
>>
>>
>>>> Did you use "nand write.i" to write the kernel and "nand read.i" to
>>>> read the kernel? the ".i" tells u-boot to skip bad blocks...
>> No I use "nand read $load_addr AppKernel" cause I didn't know we can use
>> "nand read.i" - "help nand" doesn't display this information.
>> I tried "nand read.i" and now it works fine but I still can't boot the
>> kernel cause its crc is wrong I will flash the kernel again with "nand
>> write.i" and check if it works.
> Assuming you load the kernel to ram with tftp (and that "AppKernel" is
> an mtdparts partition in NAND), then you could do:
>
> nand erase.part AppKernel
> tftp $load_addr uImage
> crc32 $load_addr $filesize
> nand write.i $load_addr AppKernel $filesize
> nand read.i $load_addr AppKernel $filesize
> crc32 $load_addr $filesize
>
> To verify the CRCs match between what you load off tftp and what you
> read back from NAND.

There is no U-Boot version that both has "nand erase.part" and requires
a .i suffix on nand read/write.

-Scott