pc-bios: Add NPCM8XX vBootrom

The bootrom is a minimal bootrom used to load an NPCM8XX image.
The source code is located in the same repo as the NPCM7XX one:
github.com/google/vbootrom/tree/master/npcm8xx.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Hao Wu <wuhaotsh@google.com>
Message-id: 20250219184609.1839281-3-wuhaotsh@google.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

MAINTAINERS

@@ -878,6 +878,7 @@ F: include/hw/*/npcm*
 F: tests/qtest/npcm*
 F: tests/qtest/adm1266-test.c
 F: pc-bios/npcm7xx_bootrom.bin
+F: pc-bios/npcm8xx_bootrom.bin
 F: roms/vbootrom
 F: docs/system/arm/nuvoton.rst
 F: tests/functional/test_arm_quanta_gsj.py

pc-bios/README

@@ -70,10 +70,10 @@
   source code also contains code reused from other projects described here:
   https://github.com/riscv/opensbi/blob/master/ThirdPartyNotices.md.
 
-- npcm7xx_bootrom.bin is a simplified, free (Apache 2.0) boot ROM for Nuvoton
-  NPCM7xx BMC devices. It currently implements the bare minimum to load, parse,
-  initialize and run boot images stored in SPI flash, but may grow more
-  features over time as needed. The source code is available at:
+- npcm{7xx,8xx}_bootrom.bin is a simplified, free (Apache 2.0) boot ROM for
+  Nuvoton NPCM7xx/8xx BMC devices. It currently implements the bare minimum to
+  load, parse, initialize and run boot images stored in SPI flash, but may grow
+  more features over time as needed. The source code is available at:
   https://github.com/google/vbootrom
 
 - hppa-firmware.img (32-bit) and hppa-firmware64.img (64-bit) are firmware

pc-bios/meson.build

@@ -80,6 +80,7 @@ blobs = [
   'opensbi-riscv32-generic-fw_dynamic.bin',
   'opensbi-riscv64-generic-fw_dynamic.bin',
   'npcm7xx_bootrom.bin',
+  'npcm8xx_bootrom.bin',
   'vof.bin',
   'vof-nvram.bin',
 ]

roms/Makefile

@@ -34,6 +34,7 @@ find-cross-gcc = $(firstword $(wildcard $(patsubst %ld,%gcc,$(call find-cross-ld
 # finally strip off path + toolname so we get the prefix
 find-cross-prefix = $(subst gcc,,$(notdir $(call find-cross-gcc,$(1))))
 
+aarch64_cross_prefix := $(call find-cross-prefix,aarch64)
 arm_cross_prefix := $(call find-cross-prefix,arm)
 powerpc64_cross_prefix := $(call find-cross-prefix,powerpc64)
 powerpc_cross_prefix := $(call find-cross-prefix,powerpc)
@@ -66,6 +67,7 @@ default help:
 	@echo "  u-boot.e500        -- update u-boot.e500"
 	@echo "  u-boot.sam460      -- update u-boot.sam460"
 	@echo "  npcm7xx_bootrom    -- update vbootrom for npcm7xx"
+	@echo "  npcm8xx_bootrom    -- update vbootrom for npcm8xx"
 	@echo "  efi                -- update UEFI (edk2) platform firmware"
 	@echo "  opensbi32-generic  -- update OpenSBI for 32-bit generic machine"
 	@echo "  opensbi64-generic  -- update OpenSBI for 64-bit generic machine"
@@ -194,6 +196,10 @@ npcm7xx_bootrom:
 	$(MAKE) -C vbootrom CROSS_COMPILE=$(arm_cross_prefix)
 	cp vbootrom/npcm7xx_bootrom.bin ../pc-bios/npcm7xx_bootrom.bin
 
+npcm8xx_bootrom:
+	$(MAKE) -C vbootrom CROSS_COMPILE=$(aarch64_cross_prefix)
+	cp vbootrom/npcm8xx_bootrom.bin ../pc-bios/npcm8xx_bootrom.bin
+
 hppa-firmware:
 	$(MAKE) -C seabios-hppa parisc
 	cp seabios-hppa/out/hppa-firmware.img      ../pc-bios/