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mb/emulation/qemu-riscv: Change to -bios option

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This changes the virt target so that it can be run with the -bios option
and a pflash backend for the flash. QEMU can now be run as follows:

qemu -M virt -m 1G -nographic -bios build/coreboot.rom \
        -drive if=pflash,file=./build/coreboot.rom,format=raw

coreboot will start in DRAM, but still have a flash to put CBFS onto and
to load subsequent stages and payload from.

Tested bootflow:
coreboot -> OpenSBI -> Linux -> u-root

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I009d97fa3e13068b91c604e987e50a65e525407d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80746
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: ron minnich <rminnich@gmail.com>
Reviewed-by: Philipp Hug <philipp@hug.cx>
This commit is contained in:
Maximilian Brune
2024-02-24 04:34:55 +01:00
committed by ron minnich
parent 3304c1cbad
commit ee1cb8f463
13 changed files with 98 additions and 55 deletions
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6
util/qemu/Makefile.mk
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@@ -29,9 +29,11 @@
QEMU-$(CONFIG_BOARD_EMULATION_QEMU_AARCH64) ?= qemu-system-aarch64 \
-M virt,secure=on,virtualization=on -cpu cortex-a53 -m 1G
QEMU-$(CONFIG_BOARD_EMULATION_QEMU_RISCV_RV64) ?= qemu-system-riscv64 -M virt
QEMU-$(CONFIG_BOARD_EMULATION_QEMU_RISCV_RV64) ?= qemu-system-riscv64 -M virt -m 1G -drive \
if=pflash,file=build/coreboot.rom,format=raw
QEMU-$(CONFIG_BOARD_EMULATION_QEMU_RISCV_RV32) ?= qemu-system-riscv32 -M virt
QEMU-$(CONFIG_BOARD_EMULATION_QEMU_RISCV_RV32) ?= qemu-system-riscv32 -M virt -m 1G -drive \
if=pflash,file=build/coreboot.rom,format=raw
QEMU-$(CONFIG_BOARD_EMULATION_QEMU_X86_I440FX) ?= qemu-system-x86_64 -M pc