[PATCH 11/11] socfpga: arria10: Allow dcache_enable before relocation

[Simon Glass]

On Fri, 1 Apr 2022 at 06:44, Paweł Anikiel <pan at semihalf.com> wrote:
>
> Before relocating to SDRAM, the ECC is initialized by clearing the
> whole SDRAM. In order to speed this up, dcache_enable is used (see
> sdram_init_ecc_bits).
>
> Since commit 503eea451903 ("arm: cp15: update DACR value to activate
> access control"), this no longer works, because running code in OCRAM
> with the XN bit set causes a page fault. Override dram_bank_mmu_setup
> to disable XN in the OCRAM and setup DRAM dcache before relocation.
>
> Signed-off-by: Paweł Anikiel <pan at semihalf.com>
> ---
>  arch/arm/mach-socfpga/misc_arria10.c | 26 ++++++++++++++++++++++++++
>  1 file changed, 26 insertions(+)

Reviewed-by: Simon Glass <sjg at chromium.org>