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build both BIOS and EFI images

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This commit is contained in:
Josh Holtrop 2020-10-18 13:12:37 -04:00
parent a91ea8d620
commit 8f9881889b
2 changed files with 41 additions and 8 deletions
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10
Makefile
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@ -2,6 +2,10 @@
all:
./rscons build
.PHONY: run
run:
qemu-system-x86_64 -bios OVMF.fd -hda build/hos.img
.PHONY: run-efi
run-efi:
qemu-system-x86_64 -bios OVMF.fd -hda build/hos-efi.img
.PHONY: run-bios
run-bios:
qemu-system-x86_64 -hda build/hos-bios.img

39
Rsconscript
View File

@ -3,6 +3,7 @@ configure do
check_program "genext2fs"
check_program "grub-mkstandalone"
check_program "mformat", on_fail: "Install the mtools package"
check_program "xorriso"
end
build do
@ -13,10 +14,36 @@ build do
# HOS partition size (MiB)
HOS_PART_SIZE = 4
class Image < Builder
class BiosImage < Builder
def run(options)
unless @cache.up_to_date?(@target, nil, @sources, @env)
print_run_message("Generating disk image #{@target}", nil)
print_run_message("Generating BIOS boot image #{@target}", nil)
Dir.mktmpdir do |tmpdir|
# Create iso directory.
FileUtils.mkdir_p("#{tmpdir}/iso/boot/grub")
File.open("#{tmpdir}/iso/boot/grub/grub.cfg", "wb") do |fh|
fh.write(<<EOF)
menuentry "HOS" {
multiboot /hos.elf
}
EOF
end
@sources.each do |source|
FileUtils.cp(source, "#{tmpdir}/iso")
end
# Build bootable GRUB image.
system(*%W[grub-mkrescue -o #{@target} #{tmpdir}/iso], err: "#{@env.build_root}/grub-mkrescue.log")
end
@cache.register_build(@target, nil, @sources, @env)
end
true
end
end
class EfiImage < Builder
def run(options)
unless @cache.up_to_date?(@target, nil, @sources, @env)
print_run_message("Generating EFI boot image #{@target}", nil)
Dir.mktmpdir do |tmpdir|
# Build a standalone GRUB.
File.open("#{tmpdir}/grub.cfg", "wb") do |fh|
@ -63,13 +90,15 @@ EOF
end
Environment.new do |env|
env.add_builder(Image)
env["CCFLAGS"] += %w[-ffreestanding -Wall -O2]
env.add_builder(EfiImage)
env.add_builder(BiosImage)
env["CCFLAGS"] += %w[-ffreestanding -Wall]
env["LDFLAGS"] += %w[-ffreestanding -nostdlib -T src/link.ld]
env["LIBS"] += %w[gcc]
env["OBJDUMP"] = "i686-elf-objdump"
env.Program("^/hos.elf", glob("src/**/*.{S,c}"))
env.Disassemble("^/hos.elf.txt", "^/hos.elf")
env.Image("build/hos.img", %w[^/hos.elf])
env.EfiImage("build/hos-efi.img", %w[^/hos.elf])
env.BiosImage("build/hos-bios.img", %w[^/hos.elf])
end
end