Flashrom 9.3 erarse and write error

Hi,
       We are using BIOS+ME region with the help of vendor tool.
> From Flashrom tool, we are looking for Save/Update the NVRAM BIOS setting region. We are able to read the NVRAM BIOS setting, but we are not able to write NVRAM setting as flashrom is not allowing us to write on to bios region. Because erase is not happening before writing and also spi_send_multicommand() in flashrom is failing.

If it is possible could you please help us to provide the command for erasing and writing on to NVRAM BIOS setting?

Thanks & Regards
Pradeep p

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[Stefan Tauner]

On Tue, 30 Oct 2012 10:34:45 +0000
 wrote:
> Hi,
>        We are using BIOS+ME region with the help of vendor tool.
>
> From Flashrom tool, we are looking for Save/Update the NVRAM BIOS setting region. We are able to read the NVRAM BIOS setting, but we are not able to write NVRAM setting as flashrom is not allowing us to write on to bios region. Because erase is not happening before writing and also spi_send_multicommand() in flashrom is failing.
>
> If it is possible could you please help us to provide the command for erasing and writing on to NVRAM BIOS setting?

Hi,

1. 0.9.3 is old, please update.
2. please send a verbose log (-V parameter)

Hi Stefan,

I have attached log of flash tool please find the attachment.

Thanks & Regards
Pradeep P

-----Original Message-----
From: Stefan Tauner [mailto:[e-mail]] 
Sent: Tuesday, October 30, 2012 5:51 PM
To: Pradeep P (WT01 - Manufacturing & Hi Tech)
Cc: [e-mail]
Subject: Re: [flashrom] Flashrom 9.3 erarse and write error

On Tue, 30 Oct 2012 10:34:45 +0000
 wrote:
> Hi,
>        We are using BIOS+ME region with the help of vendor tool.
>
> From Flashrom tool, we are looking for Save/Update the NVRAM BIOS setting region. We are able to read the NVRAM BIOS setting, but we are not able to write NVRAM setting as flashrom is not allowing us to write on to bios region. Because erase is not happening before writing and also spi_send_multicommand() in flashrom is failing.
>
> If it is possible could you please help us to provide the command for erasing and writing on to NVRAM BIOS setting?

Hi,

1. 0.9.3 is old, please update.
2. please send a verbose log (-V parameter)

[Stefan Tauner]

On Wed, 31 Oct 2012 06:16:40 +0000
 wrote:
> I have attached log

no, you did not or it did not get through.

Hi Stefan,

I have attached log of flash tool please find the attachment.

Thanks & Regards
Pradeep P

-----Original Message-----
From: Stefan Tauner [mailto:[e-mail]] 
Sent: Tuesday, October 30, 2012 5:51 PM
To: Pradeep P (WT01 - Manufacturing & Hi Tech)
Cc: [e-mail]
Subject: Re: [flashrom] Flashrom 9.3 erarse and write error

On Tue, 30 Oct 2012 10:34:45 +0000
 wrote:
> Hi,
>        We are using BIOS+ME region with the help of vendor tool.
>
> From Flashrom tool, we are looking for Save/Update the NVRAM BIOS setting region. We are able to read the NVRAM BIOS setting, but we are not able to write NVRAM setting as flashrom is not allowing us to write on to bios region. Because erase is not happening before writing and also spi_send_multicommand() in flashrom is failing.
>
> If it is possible could you please help us to provide the command for erasing and writing on to NVRAM BIOS setting?

Hi,

1. 0.9.3 is old, please update.
2. please send a verbose log (-V parameter)

[Stefan Tauner]

On Wed, 31 Oct 2012 10:18:04 +0000
 wrote:
> 0x54: 0x000f0000 (FREG0: Flash Descriptor)
> 0x00000000-0x0000ffff is read-only
> 0x58: 0x07ff0400 (FREG1: BIOS)
> 0x00400000-0x007fffff is read-write
> 0x5C: 0x03ff0010 (FREG2: Management Engine)
> 0x00010000-0x003fffff is locked
> 0x60: 0x00000fff (FREG3: Gigabit Ethernet)
> 0x00fff000-0x00000fff is read-write
> 0x64: 0x00000fff (FREG4: Platform Data)
> 0x00fff000-0x00000fff is read-write
> 0x74: 0x800f0000 (PR0)

the flash descriptor is active (defining FREG[0-4]) and the firmware
has set up the protected register 0. the address ranges (e.g.
0x00000000-0x0000ffff for FREG0) are the addresses of the flash chip.
so for example the first 4kB are read-only.
the pr0 does also define an address range, but it is not printed in
your version of flashrom, because it is outdated.
0x800f0000 means the first 16kB are write protected, if i am not
mistaken. you could see that directly from the output of flashrom 0.9.5
or newer.

where the firmware saves its settings depends on the firmware. most
probably somewhere in the BIOS region. you need to find that out
yourself. for example you could compare images read before and after
changing some settings in the firmware interface or you could
reverse-engineer the firmware. we can not help you with that.