[flashrom] flashrom: Can't mmap memory

[Carl-Daniel Hailfinger]

On 28.09.2010 15:43, Pádraig Brady wrote:
> On 28/09/10 13:54, Pádraig Brady wrote:
>   
>> This issue looks similar to this:
>> http://www.coreboot.org/pipermail/coreboot/2009-February/044672.html
>>
>> Any ideas?
>>     
>
> Ah, when trying the same binary on an official fedora 13 live usb key it works.
> So it's something specific to my system. Feel free to ignore this unless
> you know off the top of your head what the issue might be on my read-only
> root, custom F12 distro.
>
> The differences are summarised below:
>
> Broken...
>
> flashrom v0.9.2-r1182 on Linux 2.6.32.10-90.fc12.i686 (i686)
> Probing for Winbond W25x80, 1024 KB: Error accessing flash chip,
> 0x100000 bytes at 0xfff00000
> /dev/mem mmap failed: Value too large for defined data type
>
> Working...
>
> flashrom v0.9.2-r1182 on Linux 2.6.33.3-85.fc13.i686 (i686)
> Probing for Winbond W25x80, 1024 KB: probe_spi_rdid_generic: id1 0xef, id2 0x3014
> Chip status register is 00
> Found chip "Winbond W25x80" (1024 KB, SPI) at physical address 0xfff00000.
>   

Mh. Could you please compare the following for both kernels?
CONFIG_X86_PAT
CONFIG_STRICT_DEVMEM
/proc/iomem
The first 100 lines of dmesg

I believe there should be a clue somewhere.

Finally, I'd love to see if flashrom r1180 works on the broken machine.
(Explanation: r1181 changed physical memory handling, and I want to be
totally sure that this is not the reason you're seeing errors).

Regards,
Carl-Daniel

-- 
http://www.hailfinger.org/