sifive_dev_platform: Set default MMIO region when SmePMP is enabled

Set a default MMIO region with a single SmePMP entry, which allows us
to save entries for M-mode only devices. The default entry has M-/S-mode
shared permission, so system-level resource protection, such as RISC-V
World extension and WorldGuard checker, will be introduced to protect
M-mode only region access from lower privilege modes.

Reviewed-by: Greentime Hu <[email protected]>
Reviewed-by: Zong Li <[email protected]>
Signed-off-by: Yu-Chien Peter Lin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Anup Patel <[email protected]>

0 files changed, 0 insertions, 0 deletions