| # SPDX-License-Identifier: GPL-2.0 |
| OBJECT_FILES_NON_STANDARD := y |
| |
| purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string.o |
| |
| targets += $(purgatory-y) |
| PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y)) |
| |
| $(obj)/sha256.o: $(srctree)/lib/sha256.c FORCE |
| $(call if_changed_rule,cc_o_c) |
| |
| LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib |
| targets += purgatory.ro |
| |
| KASAN_SANITIZE := n |
| KCOV_INSTRUMENT := n |
| |
| # Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That |
| # in turn leaves some undefined symbols like __fentry__ in purgatory and not |
| # sure how to relocate those. Like kexec-tools, use custom flags. |
| |
| KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes -fno-zero-initialized-in-bss -fno-builtin -ffreestanding -c -Os -mcmodel=large |
| KBUILD_CFLAGS += -m$(BITS) |
| KBUILD_CFLAGS += $(call cc-option,-fno-PIE) |
| |
| $(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE |
| $(call if_changed,ld) |
| |
| targets += kexec-purgatory.c |
| |
| quiet_cmd_bin2c = BIN2C $@ |
| cmd_bin2c = $(objtree)/scripts/bin2c kexec_purgatory < $< > $@ |
| |
| $(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE |
| $(call if_changed,bin2c) |
| |
| obj-$(CONFIG_KEXEC_FILE) += kexec-purgatory.o |
