flashrom 1.2 supports W25R256JVEIQ ?

[Rao G]

Hi Flashrom team,

Am trying to flash on W25R256JVEIQ NOR flash

sudo flashrom -p internal -w coreboot_ehl_2609.bin

flash device is not found, hope it means W25R256JVEIQ NOR flash device is
not supported by flashrom 1.2?

sudo flashrom -p internal -w coreboot_ehl_2609.bin
flashrom v1.2 on Linux 5.13.0-21-generic (x86_64)
flashrom is free software, get the source code at https://flashrom.org

Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
WARNING: No chipset found. Flash detection will most likely fail.
No EEPROM/flash device found.
Note: flashrom can never write if the flash chip isn't found automatically

Thanks for your time!

Best Regards
Rao

[Rao G]

Hi Flashrom Team,

The DID 0x4019 which is for WINBOND_NEX_W25Q256_V 0x4019 /* W25Q256FV or
W25Q256JV_Q (QE=1) */
supports W25R256JVEIQ flashpart

I think the issue is with table *chipset_enables *defined inside ->
flashrom-master\flashrom-master\Chipset_enable.c
is not matching Elkhart Lake PCH ID which is causing

WARNING: No chipset found. Flash detection will most likely fail

Best Regards

Rao

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On Tue, Nov 23, 2021 at 11:38 AM Rao G  wrote:
> Hi Flashrom team,
>
> Am trying to flash on W25R256JVEIQ NOR flash
>
> sudo flashrom -p internal -w coreboot_ehl_2609.bin
>
> flash device is not found, hope it means W25R256JVEIQ NOR flash device is
> not supported by flashrom 1.2?
>
> sudo flashrom -p internal -w coreboot_ehl_2609.bin
> flashrom v1.2 on Linux 5.13.0-21-generic (x86_64)
> flashrom is free software, get the source code at https://flashrom.org
>
> Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
> WARNING: No chipset found. Flash detection will most likely fail.
> No EEPROM/flash device found.
> Note: flashrom can never write if the flash chip isn't found automatically
>
> Thanks for your time!
>
> Best Regards
> Rao

[Nico Huber]

Hello Rao,

On 23.11.21 18:15, Rao G wrote:
> I think the issue is with table *chipset_enables *defined inside ->
> flashrom-master\flashrom-master\Chipset_enable.c
> is not matching Elkhart Lake PCH ID which is causing
>
> WARNING: No chipset found. Flash detection will most likely fail

that's correct. Elkhart Lake is not supported yet. If Intel didn't
change their course, the flash chip's DID won't matter, as Intel wants
their hardware to handle that. Flashrom would then treat it as an
"opaque flash chip".

For the moment, you could just try if it works if you add the EHL PCH
ID. However, I wouldn't know which chipset generation (enum ich_chipset)
to choose.

For a permanent solution, somebody should review all the code around
`enum ich_chipset` against the EHL datasheet, to figure which paths
would suit it best, if any. If none, we should extend the enum.

Beside the actual SPI-controller support, flashrom also maintains
support for Intel's flash descriptor (IFD). This is also strongly
tied to `enum ich_chipset`. To review the related code, one needs
the "SPI Guide" for EHL. Alas, this is usually only available under
NDA. If you can get it, it's usually part of the firmware package
for the management engine ((TX|CS(M)|M)E, or whatever it's called
this time ^^).

Hope that helps,
Nico