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From: Vipin Kumar <vipin.kumar@st.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] Using Micron (Numonyx) m28w640hcb with u-boot
Date: Tue, 15 Nov 2011 10:40:34 +0530	[thread overview]
Message-ID: <4EC1F44A.6040600@st.com> (raw)
In-Reply-To: <201111141729.57833.gudjon@gudjon.org>

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 at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
>

  reply	other threads:[~2011-11-15  5:10 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-12 12:01 [U-Boot] Using Micron (Numonyx) m28w640hcb with u-boot Gudjon I. Gudjonsson
2011-11-14  4:17 ` Vipin Kumar
     [not found]   ` <4EC0CE06.8060503@st.com>
2011-11-14 16:29     ` Gudjon I. Gudjonsson
2011-11-15  5:10       ` Vipin Kumar [this message]
2011-11-15 18:48         ` [U-Boot] Using Micron (Numonyx) m28w640hcb with u-boot (Solved) Gudjon I. Gudjonsson

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