Re: fixed partitions issue

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

Hello Stefano,

On 31.07.25 19:43, Stefano Manni wrote:
> On v2025.07.0 every time I write barebox-env part (e.g. with nv command) also barebox
> part is written. This on v2025.01.0 does not happen.
> 
> I supposed the problem was in the fixed-partition bindings but maybe it is somewhere
> else, for example in the spinor driver.
> 
> Is that something I may test to understand more?

The issue was easily reproducible in QEMU with the virt platform or vexpress platform,
e.g. for multi_v8_defconfig:

  pytest --lg-env test/arm/multi_v8_defconfig.yaml --interactive

and then

  barebox@ARM QEMU virt64:/ md -s /dev/nor0.initramfs 0+16 ; md -s /dev/nor0.barebox-environment 0+16
  00000000: 00000000 00000000 00000000 00000000                ................
  00000000: 00000000 00000000 00000000 00000000                ................

  barebox@ARM QEMU virt64:/ saveenv 
  saving environment to /dev/nor0.barebox-environment
  barebox@ARM QEMU virt64:/ md -s /dev/nor0.initramfs 0+16 ; md -s /dev/nor0.barebox-environment 0+16
  00000000: 798fba79 00000000 00000000 00000000                y..y............
  00000000: 798fba79 00000000 00000000 00000000                y..y............


I ran a git bisect and found the issue to be introduced by Sascha's commit
6d2b6f399c07 ("cdev: pass master cdev to cdev ops").
This was first included in v2025.07.0.

@Sascha, can you look into this?

Thanks,
Ahmad



> 
> Best,
> Stefano
> 
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