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| author | Michael Brown | 2021-02-15 10:54:03 +0100 |
|---|---|---|
| committer | Michael Brown | 2021-02-15 11:02:32 +0100 |
| commit | 1b99ba2a93df92df63a7cddfb1b2cfb7b96be772 (patch) | |
| tree | 4dd2e876f75b02c740913b4b0c6adc182f51463c /src/arch/x86/Makefile.pcbios | |
| parent | [cloud] Use PCIAPI_DIRECT for cloud images (diff) | |
| download | ipxe-1b99ba2a93df92df63a7cddfb1b2cfb7b96be772.tar.gz ipxe-1b99ba2a93df92df63a7cddfb1b2cfb7b96be772.tar.xz ipxe-1b99ba2a93df92df63a7cddfb1b2cfb7b96be772.zip | |
[build] Work around stray sections introduced by some binutils versions
Some versions of GNU ld (observed with binutils 2.36 on Arch Linux)
introduce a .note.gnu.property section marked as loadable at a high
address and with non-empty contents. This adds approximately 128MB of
garbage to the BIOS .usb disk images.
Fix by using a custom linker script for the prefix-only binaries such
as the USB disk partition table and MBR, in order to allow unwanted
sections to be explicitly discarded.
Reported-by: Christian Hesse <mail@eworm.de>
Tested-by: Christian Hesse <mail@eworm.de>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/arch/x86/Makefile.pcbios')
| -rw-r--r-- | src/arch/x86/Makefile.pcbios | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/src/arch/x86/Makefile.pcbios b/src/arch/x86/Makefile.pcbios index 751d7d28c..ed8d554a7 100644 --- a/src/arch/x86/Makefile.pcbios +++ b/src/arch/x86/Makefile.pcbios @@ -4,18 +4,15 @@ # SRCDIRS += arch/x86/drivers/net -# The i386 linker script +# The linker scripts # LDSCRIPT = arch/x86/scripts/pcbios.lds +LDSCRIPT_PREFIX = arch/x86/scripts/prefixonly.lds # Stop ld from complaining about our customised linker script # LDFLAGS += -N --no-check-sections -# Prefix always starts at address zero -# -LDFLAGS += --section-start=.prefix=0 - # Media types. # MEDIA += rom @@ -73,12 +70,12 @@ NON_AUTO_MEDIA += fd0 # Special target for building Master Boot Record binary $(BIN)/mbr.tmp : $(BIN)/mbr.o $(QM)$(ECHO) " [LD] $@" - $(Q)$(LD) $(LDFLAGS) -o $@ -e mbr $< + $(Q)$(LD) $(LDFLAGS) -T $(LDSCRIPT_PREFIX) -o $@ -e mbr $< # rule to make a USB disk image $(BIN)/usbdisk.tmp : $(BIN)/usbdisk.o $(QM)$(ECHO) " [LD] $@" - $(Q)$(LD) $(LDFLAGS) -o $@ -e mbr $< + $(Q)$(LD) $(LDFLAGS) -T $(LDSCRIPT_PREFIX) -o $@ -e mbr $< NON_AUTO_MEDIA += usb %usb: $(BIN)/usbdisk.bin %hd |