[PATCH] armv8: cache_v8: Fix pgtables setup when MMU is already enabled

[Marek Behún]

On Wed, 14 Sep 2022 13:37:46 +0200
Pali Rohár <pali at kernel.org> wrote:

> When MMU is already enabled then dcache_enable() does not call mmu_setup()
> and so setup_all_pgtables() is also never called.
> 
> In this situation when some driver calls mmu_set_region_dcache_behaviour()
> function then U-Boot crashes with error message:
> 
>     Emergency page table not setup.
> 
> Fix this issue by explicitly calling setup_all_pgtables() in dcache_enable()
> function near condition for mmu_setup().
> 
> This change fixes chainloading U-Boot from U-Boot on Turris Mox board which
> uses mvneta ethernet driver which calls mmu_set_region_dcache_behaviour().
> 
> Signed-off-by: Pali Rohár <pali at kernel.org>

Reviewed-by: Marek Behún <kabel at kernel.org>