[coreboot-gerrit] [M] Change in coreboot[master]: riscv/mb/qemu: fix DRAM probing

[Arthur Heymans (Code Review)]

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

Arthur Heymans has uploaded a new patch set (#3) to the change originally created by Philipp Hug. ( https://review.coreboot.org/c/coreboot/+/36486 )

Change subject: riscv/mb/qemu: fix DRAM probing
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riscv/mb/qemu: fix DRAM probing

Current version of qemu raise an exception when accessing invalid memory.
Modify the probing code to temporary redirect the exception handler like on
ARM platform.

TEST=qemu detects RAM size correctly
Change-Id: I25860f688c7546714f6fdbce8c8f96da6400813c
Signed-off-by: Philipp Hug 
Signed-off-by: Arthur Heymans 
---
M src/arch/riscv/Makefile.inc
M src/arch/riscv/include/arch/exception.h
A src/arch/riscv/ramdetect.c
M src/arch/riscv/trap_handler.c
M src/arch/riscv/trap_util.S
M src/lib/imd_cbmem.c
M src/lib/ramdetect.c
7 files changed, 75 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/86/36486/3