Lad Prabhakar dea0922f86 platform: renesas/rzfive: Configure Local memory regions as part of root domain ...

Renesas RZ/Five RISC-V SoC has Instruction local memory and Data local
memory (ILM & DLM) mapped between region 0x30000 - 0x4FFFF. When a
virtual address falls within this range, the MMU doesn't trigger a page
fault; it assumes the virtual address is a physical address which can
cause undesired behaviours for statically linked applications/libraries.

To avoid this, add the ILM/DLM memory regions to the root domain region
of the PMPU with permissions set to 0x0 for S/U modes so that any access
to these regions gets blocked and for M-mode we grant full access (R/W/X).

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Anup Patel <anup@brainfault.org>

2023-01-23 11:29:03 +05:30

..

objects.mk

platform: generic: Add Renesas RZ/Five initial support

2022-12-12 18:50:56 +05:30

rzfive.c

platform: renesas/rzfive: Configure Local memory regions as part of root domain

2023-01-23 11:29:03 +05:30