dm: crash for DM_FLAG_PRE_RELOC

[Fabio Estevam]

Changing Ruchika's address to the NXP one.

On Wed, Apr 15, 2020 at 3:28 PM Heinrich Schuchardt <xypron.glpk at gmx.de> wrote:
>
> Hello Simon,
>
> I try to boot pine64-lts_defconfig + CONFIG_RSA=y.
>
> SPL loads BL31. BL31 starts U-Boot. But before any output appears SPL is
> restarted. So some crash must occur.
>
> If I remove the flag DM_FLAG_PRE_RELOC in
> drivers/crypto/rsa_mod_exp/mod_exp_sw.c, booting works fine.
>
> Assigning the driver to UCLASS_NOP does not resolve the problem. So it
> seems not to be a problem with the u-class.
>
> Enlarging CONFIG_SPL_SYS_MALLOC_F_LEN and CONFIG_SYS_MALLOC_F_LEN does
> not resolve the problem.
>
> As the failure occurs very early no console is available for debug
> output. Defining LOG_DEBUG at the top of drivers/core/list.c provides no
> output.
>
> Do you have an idea how to identify the root cause of the problem?
>
> @Ruchika
> Why is this driver loaded before relocation? I cannot find any usage of
> function rsa_verify_key() before relocation.
>
> Best regards
>
> Heinrich