Unable to flash

[Stan Gosnell]

Asus Chromebox CN60, flashed to SeaBios, running Linux.  Running 
flashrom gives this output:

[stan@chromebox ~]$ sudo flashrom -r -V -p internal
flashrom v1.3.0 on Linux 6.2.15-300.fc38.x86_64 (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: Supplied image file name starts with -
coreboot table found at 0x7f73d000.
Found chipset "Intel Lynx Point LP Mainstream".
This chipset is marked as untested. If you are using an up-to-date version
of flashrom *and* were (not) able to successfully update your firmware 
with it,
then please email a report to [e-mail] including a verbose 
(-V) log.
Thank you!
Enabling flash write... Error accessing ICH RCRB, 0x4000 bytes at 
0x00000000fed1c000
/dev/mem mmap failed: Operation not permitted
FAILED!
FATAL ERROR!
Error: Programmer initialization failed.

Fedora 38, current updates. I don't think the chipset is correct, but 
I'm going by (perhaps faulty) memory.

[Mike Banon]

Hi there Stan,

Try booting your linux kernel with iomem=relaxed and see if it
resolves your flash chip access issue. Also, you may have trouble
flashing if you're using a linux-hardened - if yes, you'd need to
temporarily switch to a regular linux kernel.

On Thu, May 25, 2023 at 10:05 AM Stan Gosnell  wrote:
> Asus Chromebox CN60, flashed to SeaBios, running Linux.  Running flashrom gives this output:
>
> [stan@chromebox ~]$ sudo flashrom -r -V -p internal
> flashrom v1.3.0 on Linux 6.2.15-300.fc38.x86_64 (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: Supplied image file name starts with -
> coreboot table found at 0x7f73d000.
> Found chipset "Intel Lynx Point LP Mainstream".
> This chipset is marked as untested. If you are using an up-to-date version
> of flashrom *and* were (not) able to successfully update your firmware with it,
> then please email a report to [e-mail] including a verbose (-V) log.
> Thank you!
> Enabling flash write... Error accessing ICH RCRB, 0x4000 bytes at 0x00000000fed1c000
> /dev/mem mmap failed: Operation not permitted
> FAILED!
> FATAL ERROR!
> Error: Programmer initialization failed.
>
> Fedora 38, current updates.  I don't think the chipset is correct, but I'm going by (perhaps faulty) memory.
>
> flashrom mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]

[Angel Pons]

Hi,

On Thu, May 25, 2023 at 7:05 AM Stan Gosnell  wrote:
> Asus Chromebox CN60, flashed to SeaBios, running Linux.  Running flashrom gives this output:
>
> [stan@chromebox ~]$ sudo flashrom -r -V -p internal
> flashrom v1.3.0 on Linux 6.2.15-300.fc38.x86_64 (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: Supplied image file name starts with -

This happens because you did not specify the filename flashrom should
store the flash chip's contents to, so it uses `-V` as filename.
> coreboot table found at 0x7f73d000.
> Found chipset "Intel Lynx Point LP Mainstream".

Note that, by default, not all IFD (Intel Flash Descriptor) regions of
the flash chip can be read, and even less regions can be written to.
The ME region cannot be accessed at all, and the descriptor region is
read-only. Once you address the mmap failure, flashrom will warn you
if not all regions are readable by the host and that you should use a
layout file. But it doesn't mention that you can use the IFD region
information instead of a layout file with the `--ifd` command-line
switch.
> This chipset is marked as untested. If you are using an up-to-date version
> of flashrom *and* were (not) able to successfully update your firmware with it,
> then please email a report to [e-mail] including a verbose (-V) log.
> Thank you!
> Enabling flash write... Error accessing ICH RCRB, 0x4000 bytes at 0x00000000fed1c000
> /dev/mem mmap failed: Operation not permitted
> FAILED!
> FATAL ERROR!
> Error: Programmer initialization failed.

This happens because the address range is already in use by the
`lpc_ich` kernel module. You can try unloading the module with `sudo
modprobe -r lpc_ich`. If that doesn't work, adding the `iomem=relaxed`
kernel parameter via the on-disk bootloader config (GRUB) should work.
> Fedora 38, current updates.  I don't think the chipset is correct, but I'm going by (perhaps faulty) memory.

The chipset is correct. Lynx Point LP is the PCH (Platform Controller
Hub, i.e. modern Intel southbridge) of Haswell ULT, which matches the
coreboot code for the Asus Chromebox CN60.
> flashrom mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]

Best regards,
Angel