On 11/14/2011 9:59 PM, Gudjon I. Gudjonsson wrote:

Hi Vipin

...

Hello Gudjon,

...

I have had a similar problem with spear3xx board. Basically, this flash is write protected in hardware by default. It has to be specifically made writable. Please define a flag CONFIG_SYS_FLASH_PROTECTION in your config file.

Thanks a lot. This works like charm :)

Now I have spent the whole day on trying to mount the device from Linux as a read/write partition but without luck.

Ideally, it should have happened now

I can mount the partition but if I try to do some writing to it I get:

Write clean marker to block at 0x00030000 failed: -30 ... repeated for all sector boundaries. If I reboot the device the partition is empty.

Then I tried to use flash_eraseall but it fails as well # flash_eraseall -j /dev/mtd1 Erasing 64 Kibyte @ 0 -- 0 % complete. flash_eraseall: /dev/mtd1: MTD write failure: Read-only file system

I tried to unlock the flash (using protect off) before booting Linux but without any success.

There is one environment variable to do it. setenv unlock yes I think this should be sufficient

I can't find any configuration option related to the NOR CFI flash in the spear3xx kernel configuration files. Do you have any useful hint on this as well?

Sorry, I dont have any other idea specifically for this. I will let you know if something comes to mind

Vipin

Regards Gudjon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot