* wrong cfi flash device id
@ 2012-11-20 3:54 zzs
2012-11-20 8:07 ` Jean-Christophe PLAGNIOL-VILLARD
0 siblings, 1 reply; 3+ messages in thread
From: zzs @ 2012-11-20 3:54 UTC (permalink / raw)
To: barebox
My board is very similar to at91rm9200ek but using
a 8MB cfi flash AT49BV642D.
When barebox started, the flash info as blow:
# devinfo cfi_flash0
CFI conformant FLASH (16 x 16) Size: 8 MB in 135 Sectors
AMD Standard command set, Manufacturer ID: 0x1F, Device ID: 0xD6
Erase timeout: 8192 ms, write timeout: 256 us
Buffer write timeout: 64 us, buffer size: 4 bytes
Sector Start Addresses:
10000000 10010000 10020000 10030000 10040000
10050000 10060000 10070000 10080000 10090000
100A0000 100B0000 100C0000 100D0000 100E0000
Barebox said the device id is 0xD6, But it should be 0x1D6.
Because of this wrong ID, In function drivers/nor/cfi_flash_amd.c:flash_fixup_atmel()
the erase region were reversed.
So I can't erase the first few sectors
I think it should use read8 or read16 according the portwidth like
u-boot does.
Am I right?
--
Best Regards,
zzs
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: wrong cfi flash device id
2012-11-20 3:54 wrong cfi flash device id zzs
@ 2012-11-20 8:07 ` Jean-Christophe PLAGNIOL-VILLARD
2012-11-20 8:29 ` 张忠山
0 siblings, 1 reply; 3+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-11-20 8:07 UTC (permalink / raw)
To: barebox
On 11:54 Tue 20 Nov , zzs wrote:
> My board is very similar to at91rm9200ek but using
> a 8MB cfi flash AT49BV642D.
>
> When barebox started, the flash info as blow:
>
> # devinfo cfi_flash0
> CFI conformant FLASH (16 x 16) Size: 8 MB in 135 Sectors
> AMD Standard command set, Manufacturer ID: 0x1F, Device ID: 0xD6
> Erase timeout: 8192 ms, write timeout: 256 us
> Buffer write timeout: 64 us, buffer size: 4 bytes
>
> Sector Start Addresses:
> 10000000 10010000 10020000 10030000 10040000
> 10050000 10060000 10070000 10080000 10090000
> 100A0000 100B0000 100C0000 100D0000 100E0000
>
> Barebox said the device id is 0xD6, But it should be 0x1D6.
>
> Because of this wrong ID, In function drivers/nor/cfi_flash_amd.c:flash_fixup_atmel()
> the erase region were reversed.
>
> So I can't erase the first few sectors
>
> I think it should use read8 or read16 according the portwidth like
> u-boot does.
I check the kernel we need to read the id according the bus width
btw please use a real name zzs is either an english name or a chinese name
Best Regards,
J.
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barebox mailing list
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: wrong cfi flash device id
2012-11-20 8:07 ` Jean-Christophe PLAGNIOL-VILLARD
@ 2012-11-20 8:29 ` 张忠山
0 siblings, 0 replies; 3+ messages in thread
From: 张忠山 @ 2012-11-20 8:29 UTC (permalink / raw)
To: Jean-Christophe PLAGNIOL-VILLARD; +Cc: barebox
> > I think it should use read8 or read16 according the portwidth like
> > u-boot does.
> I check the kernel we need to read the id according the bus width
>
> btw please use a real name zzs is either an english name or a chinese name
>
This is my chinese name
--
Best Regards,
zzs
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2012-11-20 8:24 UTC | newest]
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2012-11-20 8:07 ` Jean-Christophe PLAGNIOL-VILLARD
2012-11-20 8:29 ` 张忠山
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