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x86: Add support for running Intel reference code

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Intel has invented yet another binary blob which firmware is required to
run. This is run after SDRAM is ready. It is linked to load at a particular
address, typically 0, but is a relocatable ELF so can be moved if required.

Add support for this in the build system. The file should be placed in the
board directory, and called refcode.elf.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass
2016-03-11 22:07:16 -07:00
committed by Bin Meng
parent 779653b0cb
commit 0adf8d3548
3 changed files with 36 additions and 1 deletions
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14
Makefile
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@@ -1052,6 +1052,10 @@ ifneq ($(CONFIG_HAVE_VGA_BIOS),)
IFDTOOL_FLAGS += -w $(CONFIG_VGA_BIOS_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_VGA_BIOS_FILE)
endif
ifneq ($(CONFIG_HAVE_REFCODE),)
IFDTOOL_FLAGS += -w $(CONFIG_X86_REFCODE_ADDR):refcode.bin
endif
quiet_cmd_ifdtool = IFDTOOL $@
cmd_ifdtool = $(IFDTOOL) -c -r $(CONFIG_ROM_SIZE) u-boot.tmp;
ifneq ($(CONFIG_HAVE_INTEL_ME),)
@@ -1060,7 +1064,15 @@ endif
cmd_ifdtool += $(IFDTOOL) $(IFDTOOL_FLAGS) u-boot.tmp;
cmd_ifdtool += mv u-boot.tmp $@
u-boot.rom: u-boot-x86-16bit.bin u-boot.bin FORCE
refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE
$(call if_changed,copy)
quiet_cmd_ldr = LD $@
cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \
$(filter-out FORCE,$^) -o $@
u-boot.rom: u-boot-x86-16bit.bin u-boot.bin FORCE \
$(if $(CONFIG_HAVE_REFCODE),refcode.bin)
$(call if_changed,ifdtool)
OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec