[S] Change in coreboot[main]: arch/riscv: use PMP

[ron minnich (Code Review)]

Attention is currently required from: Arthur Heymans, Maximilian Brune, Philipp Hug.

Hello Arthur Heymans, Maximilian Brune, Philipp Hug, build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/81090?usp=email

to look at the new patch set (#2).

The following approvals got outdated and were removed:
Verified+1 by build bot (Jenkins)

Change subject: arch/riscv: use PMP
......................................................................

arch/riscv: use PMP

With this change, a simple S-mode payload works:
1:
li a7, 1
li a0, 48
ecall
j 1b

Without this change, it will not work.

Change-Id: I8d7dd171ee69e83f3b904df38c7e2d36cc46a62e
Signed-off-by: Ronald G Minnich 
---
M src/arch/riscv/payload.c
M src/arch/riscv/pmp.c
2 files changed, 17 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/90/81090/2