#
# Targets specific for the NERF firmware
#

# this assumes that we've already made the edk2 things, via
# edk2.intermediate or something like that.
EDK2_DIR := $(build)/$(edk2_dir)/BaseTools/BinWrappers/PosixLike

# This should be done in some sort of automated way
# it is currently a little risk prone...
initrd: initrd.intermediate
	cat blobs/r630/acpi.initrd initrd.cpio > $(linux_dir)/initrd.cpio


GenSec-name	= $(EDK2_DIR)/GenSec \
	-S EFI_SECTION_USER_INTERFACE \
	-o "$1" \
	-n $2 \

GenSec-version	= $(EDK2_DIR)/GenSec \
	-S EFI_SECTION_VERSION \
	-o "$1" \
	-n $2 \

GenSec-pe	= $(EDK2_DIR)/GenSec \
	-S EFI_SECTION_PE32 \
	-o "$1" \
	"$2" \


$(build)/$(linux_dir)/arch/x86/boot/bzImage: linux.intermediate
linux-pe.sec: $(build)/$(linux_dir)/arch/x86/boot/bzImage
	$(call GenSec-pe,$@,$<)
linux-name.sec:
	$(call GenSec-name,$@,"HeadsNERF")
linux-version.sec:
	$(call GenSec-version,$@,"0.1")
# Linux depends on the RuntimeArchProtocolGuid to have been installed,
# so we hand code a PUSH GUID, END dependecy file.
linux-dep.sec:
	perl -e 'print chr(hex($$_)) for @ARGV' > $@.tmp \
		02 \
		e1 b4 df b7 \
		2f 05 \
		9f 44 \
		87 be \
		98 18 fc 91 b7 33 \
		08 \

	$(EDK2_DIR)/GenSec \
		-S EFI_SECTION_DXE_DEPEX \
		-o $@ \
		$@.tmp

	-$(RM) $@.tmp

# The RuntimeDxe has no dependencies, so we create an empty
# DEPEX file for it (TRUE, END).  GenDepex could be used, but its
# commandline parser makes no sense.
nop-dep.sec:
	perl -e 'print chr(hex($$_)) for qw/06 08/' > $@.tmp
	$(EDK2_DIR)/GenSec \
		-S EFI_SECTION_DXE_DEPEX \
		-o $@ \
		$@.tmp

	-$(RM) $@.tmp

linux.ffs: linux-pe.sec linux-name.sec linux-version.sec nop-dep.sec
	$(EDK2_DIR)/GenFfs \
		-t EFI_FV_FILETYPE_DRIVER \
		-g DECAFBAD-4865-6164-732d-2f2d4e455246 \
		--align 64K \
		$(addprefix -i ,$^) \
		-o $@ \


$(build)/$(edk2_dir)/DxeCore.efi: edk2.intermediate
DxeCore-pe.sec: $(build)/$(edk2_dir)/DxeCore.efi
	$(call GenSec-pe,$@,$<)
DxeCore-name.sec:
	$(call GenSec-name,$@,"DxeCore")
DxeCore-version.sec:
	$(call GenSec-version,$@,"1.0")
DxeCore.ffs: DxeCore-pe.sec DxeCore-name.sec DxeCore-version.sec
	$(EDK2_DIR)/GenFfs \
		-t EFI_FV_FILETYPE_DXE_CORE \
		-g D6A2CB7F-6A18-4E2F-B43B-9920A733700A \
		--align 1K \
		$(addprefix -i ,$^) \
		-o $@ \

$(build)/$(edk2_dir)/RuntimeDxe.efi: edk2.intermediate
RuntimeDxe-pe.sec: $(build)/$(edk2_dir)/RuntimeDxe.efi
	$(call GenSec-pe,$@,$<)
RuntimeDxe-name.sec:
	$(call GenSec-name,$@,"RuntimeDxe")
RuntimeDxe-version.sec:
	$(call GenSec-version,$@,"1.0")
RuntimeDxe.ffs: RuntimeDxe-pe.sec RuntimeDxe-name.sec RuntimeDxe-version.sec nop-dep.sec
	$(EDK2_DIR)/GenFfs \
		-t EFI_FV_FILETYPE_DRIVER \
		-g B601F8C4-43B7-4784-95B1-F4226CB40CEE \
		--align 64K \
		$(addprefix -i ,$^) \
		-o $@ \

# If you have to fit within the normal UEFI image, the volume is
# limited to 0x47 blocks.
#
# But you can also replace the entire region from 0x310000
# up to PEI at 0xE40000, which leaves us almost 11 MB of space.
nerf.vol: DxeCore.ffs RuntimeDxe.ffs linux.ffs
	$(EDK2_DIR)/GenFv \
		--numberblock 0xB3 \
		--blocksize 0x10000 \
		--FvNameGuid 4652454e-482f-6165-6473-2f4c696e7578 \
		-o $@ \
		$(addprefix -f ,$^)
	-$(RM) $@.txt

# You must provide your own r630.rom as input
nerf-r630.rom: nerf.vol
	dd if=$< of=$@ conv=notrunc seek=$$[0x31] bs=$$[0x10000]



nerf.intermediate: nerf-r630.rom