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[build] Create util/genfsimg for building filesystem-based images

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Generalise util/geniso, util/gensdsk, and util/genefidsk to create a
single script util/genfsimg that can be used to build either FAT
filesystem images or ISO images.

Extend the functionality to allow for building multi-architecture UEFI
bootable ISO images and combined BIOS+UEFI images.

For example:

  ./util/genfsimg -o combined.iso \
      bin-x86_64-efi/ipxe.efi \
      bin-arm64-efi/ipxe.efi \
      bin/ipxe.lkrn

would generate a hybrid image that could be used as a CDROM (or hard
disk or USB key) on legacy BIOS, x86_64 UEFI, or ARM64 UEFI.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2021-01-13 11:50:26 +00:00
parent c42f31bc8a
commit 79c0173d6d
6 changed files with 260 additions and 308 deletions
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43
src/arch/x86/Makefile.pcbios
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@@ -57,46 +57,11 @@ LIST_NAME_mrom := ROMS
LIST_NAME_pcirom := ROMS
LIST_NAME_isarom := ROMS
# Locations of isolinux files
#
SYSLINUX_DIR_LIST := \
/usr/lib/syslinux \
/usr/lib/syslinux/bios \
/usr/lib/syslinux/modules/bios \
/usr/share/syslinux \
/usr/share/syslinux/bios \
/usr/share/syslinux/modules/bios \
/usr/local/share/syslinux \
/usr/local/share/syslinux/bios \
/usr/local/share/syslinux/modules/bios \
/usr/lib/ISOLINUX
ISOLINUX_BIN_LIST := \
$(ISOLINUX_BIN) \
$(patsubst %,%/isolinux.bin,$(SYSLINUX_DIR_LIST))
LDLINUX_C32_LIST := \
$(LDLINUX_C32) \
$(patsubst %,%/ldlinux.c32,$(SYSLINUX_DIR_LIST))
ISOLINUX_BIN = $(firstword $(wildcard $(ISOLINUX_BIN_LIST)))
LDLINUX_C32 = $(firstword $(wildcard $(LDLINUX_C32_LIST)))
# rule to make a non-emulation ISO boot image
# ISO or FAT filesystem images
NON_AUTO_MEDIA += iso
%iso: %lkrn util/geniso
$(QM)$(ECHO) " [GENISO] $@"
$(Q)ISOLINUX_BIN=$(ISOLINUX_BIN) LDLINUX_C32=$(LDLINUX_C32) \
VERSION="$(VERSION)" bash util/geniso -o $@ $<
# rule to make a floppy emulation ISO boot image
NON_AUTO_MEDIA += liso
%liso: %lkrn util/geniso
$(QM)$(ECHO) " [GENISO] $@"
$(Q)VERSION="$(VERSION)" bash util/geniso -l -o $@ $<
# rule to make a syslinux floppy image (mountable, bootable)
NON_AUTO_MEDIA += sdsk
%sdsk: %lkrn util/gensdsk
$(QM)$(ECHO) " [GENSDSK] $@"
$(Q)bash util/gensdsk $@ $<
$(BIN)/%.iso $(BIN)/%.sdsk: $(BIN)/%.lkrn util/genfsimg
$(QM)$(ECHO) " [GENFSIMG] $@"
$(Q)util/genfsimg -o $@ $<
# rule to write disk images to /dev/fd0
NON_AUTO_MEDIA += fd0