[XL] Change in coreboot[main]: mb/sifive: Add Hifive Unmatched mainboard

[Maximilian Brune (Code Review)]

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

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

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

https://review.coreboot.org/c/coreboot/+/79954?usp=email

to look at the new patch set (#8).

The following approvals got outdated and were removed:
Code-Review+2 by ron minnich, Verified+1 by build bot (Jenkins)

The change is no longer submittable: Code-Review and Verified are unsatisfied now.

Change subject: mb/sifive: Add Hifive Unmatched mainboard
......................................................................

mb/sifive: Add Hifive Unmatched mainboard

working:
Linux v6.3.5
poweroff via Linux PMIC driver
UART console output
SPI -> SDCARD
I2C -> PMIC
16 GB LPDDR4 memory
VSC8541XMV-02 (gigabit ethernet PHY)
PCIe x16 Slot
M.2 NVMe Slot
MSEL: only '1100' has been tested

untested:
M.2 WiFi/Bluetooth Slot

tested bootflow:
ZSBL -> coreboot --FDT-> Linuxboot -> uroot --kexec-> ubuntu

defconfig used:
CONFIG_VENDOR_SIFIVE=y
CONFIG_BOARD_SIFIVE_HIFIVE_UNMATCHED=y
CONFIG_PAYLOAD_NONE=n
CONFIG_PAYLOAD_ELF=y
CONFIG_PAYLOAD_FILE="[path-to-linux]/arch/riscv/boot/Image"
CONFIG_PAYLOAD_IS_FLAT_BINARY=y
CONFIG_PAYLOAD_OPTIONS="-l 0x82000000 -e 0x82000000"
CONFIG_COMPRESSED_PAYLOAD_LZMA=y

uroot kexec command:
kexec -d --cmdline "console=ttySIF0 root=/dev/mmcblk0p1 debug" \
         --initrd /mnt/boot/initrd.img-6.5.0-9-generic \
                  /mnt/boot/vmlinuz-6.5.0-9-generic

Signed-off-by: Maximilian Brune 
Change-Id: Ife0afdce89d5a1a1b936c30c8027f1bc191b8c53
---
A src/mainboard/sifive/hifive-unmatched/Kconfig
A src/mainboard/sifive/hifive-unmatched/Kconfig.name
A src/mainboard/sifive/hifive-unmatched/Makefile.inc
A src/mainboard/sifive/hifive-unmatched/board_info.txt
A src/mainboard/sifive/hifive-unmatched/cbfs_spi.c
A src/mainboard/sifive/hifive-unmatched/devicetree.cb
A src/mainboard/sifive/hifive-unmatched/fixup_fdt.c
A src/mainboard/sifive/hifive-unmatched/fu740-c000.dtsi
A src/mainboard/sifive/hifive-unmatched/hifive-unmatched-a00-mod.dts
A src/mainboard/sifive/hifive-unmatched/hifive-unmatched-a00.dts
A src/mainboard/sifive/hifive-unmatched/mainboard.c
A src/mainboard/sifive/hifive-unmatched/romstage.c
12 files changed, 1,189 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/54/79954/8