tree db890abe5ec11634ed0b8fd001e4c307e96f89a9
parent 635e3f3e47f24b2506bc9daf91d70ddf3cd024a9
author Anup Patel <anup.patel@wdc.com> 1604471833 +0530
committer Palmer Dabbelt <palmerdabbelt@google.com> 1604649827 -0800
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RISC-V: Use non-PGD mappings for early DTB access

Currently, we use PGD mappings for early DTB mapping in early_pgd
but this breaks Linux kernel on SiFive Unleashed because on SiFive
Unleashed PMP checks don't work correctly for PGD mappings.

To fix early DTB mappings on SiFive Unleashed, we use non-PGD
mappings (i.e. PMD) for early DTB access.

Fixes: 8f3a2b4a96dc ("RISC-V: Move DT mapping outof fixmap")
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Tested-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>