4cea3a19f8
This is enabled by CONFIG_RAMPAYLOAD. The code will look for a ram payload and, if it is found, try to run it. If the load fails or the payload returns it will continue with ramstage. We also include a new payload, linuxcheck, which is intended to verify that linux can be loaded and run, e.g. as a LinuxBoot payload. Currently, it fails. This does not yet work but it makes sense as a foundation on which to build. For one thing, we need to build at least a few tables for Linux. The goal for LinuxBoot is to build as few as possible. To test with linuxcheck (linux is not even close to working): cd payloads/linuxcheck/ cp x86config .config make cd ../.. make ./build/cbfstool build/coreboot.rom add-payload -n fallback/rampayload -f payloads/linuxcheck/linuxcheck.elf qemu-system-x86_64 -nographic -m 8192 -bios build/coreboot.rom -monitor /dev/pts/$1 -s We need to change the payload menu so we can add a rampayload but it's a bit tricky as written, so that must come later. Note that I'm still creating a special purpose romselfboot. The idea of merging romselfboot and selfboot is probably a good idea -- in the future. I think until we know how this should look, such a merge is premature. Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Change-Id: I8199aae6776f6dee969b370b0e6a41ef96e854d8 clang-formatted-by: Ronald G. Minnich Reviewed-on: https://review.coreboot.org/28402 Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com> Tested-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
34 lines
1 KiB
Makefile
34 lines
1 KiB
Makefile
LIBPAYLOAD_DIR=$(CURDIR)/libpayload
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XCOMPILE=$(LIBPAYLOAD_DIR)/libpayload.xcompile
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# build libpayload and put .config file in $(CURDIR) instead of ../libpayload
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# to avoid pollute the libpayload source directory and possible conflicts
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LPOPTS=obj="$(CURDIR)/build" DESTDIR="$(CURDIR)" DOTCONFIG="$(CURDIR)/.config"
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CFLAGS += -Wall -Werror -Os -ffreestanding -nostdinc -nostdlib
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all: linuxcheck.elf
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$(LIBPAYLOAD_DIR):
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$(MAKE) -C ../libpayload $(LPOPTS) defconfig
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$(MAKE) -C ../libpayload $(LPOPTS)
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$(MAKE) -C ../libpayload $(LPOPTS) install
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ifneq ($(strip $(wildcard libpayload)),)
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include $(XCOMPILE)
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LPGCC = CC="$(GCC_CC_x86_32)" "$(LIBPAYLOAD_DIR)/bin/lpgcc"
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%.elf: %.c Makefile
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$(LPGCC) $(CFLAGS) -o $*.elf $*.c
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else
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# If libpayload is not found, first build libpayload,
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# then do the make, this time it'll find libpayload
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# and generate the linuxcheck.elf target
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%.elf: $(LIBPAYLOAD_DIR)
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$(MAKE) all
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endif
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clean:
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rm -f linuxcheck.elf
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distclean: clean
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rm -rf build libpayload .config .config.old
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.PHONY: all clean distclean
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