[M] Change in coreboot[main]: mb/qemu-riscv: enable vboot

[Carlos López (Code Review)]

Attention is currently required from: Maximilian Brune, Philipp Hug, ron minnich.

Hello Maximilian Brune, Philipp Hug, build bot (Jenkins), ron minnich,

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

https://review.coreboot.org/c/coreboot/+/85677?usp=email

to look at the new patch set (#3).

The following approvals got outdated and were removed: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

Change subject: mb/qemu-riscv: enable vboot
......................................................................

mb/qemu-riscv: enable vboot

Add the option to enable vboot for the qemu-riscv board. In order to do
this, enable the qemu boot device driver, so that vboot is able to store
and modify data in flash, as well as the fw_cfg driver.

Additionally, add FMD files to describe the two different vboot FMAP
configurations (A or A + B), and update the memory layout in the linker
script to accommodate for the VBOOT2_WORK buffer.

TEST=boot verified with qemu-system-riscv64 + OpenSBI
Change-Id: I5a6dfa10b66c20851c5012679a9bc0168d1cf17c
Signed-off-by: Carlos López 
---
M Documentation/security/vboot/list_vboot.md
M src/mainboard/emulation/qemu-riscv/Kconfig
M src/mainboard/emulation/qemu-riscv/Makefile.mk
M src/mainboard/emulation/qemu-riscv/memlayout.ld
M src/mainboard/emulation/qemu-riscv/rom_media.c
A src/mainboard/emulation/qemu-riscv/vboot-rwa.fmd
A src/mainboard/emulation/qemu-riscv/vboot-rwab.fmd
7 files changed, 69 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/77/85677/3