projects / mirror_ubuntu-kernels.git / blame
| Commit | Line | Data |
|---|---|---|
| 736e30af LZ |
1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | OBJECT_FILES_NON_STANDARD := y | |
| 3 | ||
| 4 | purgatory-y := purgatory.o sha256.o entry.o string.o ctype.o memcpy.o memset.o | |
| 5 | ||
| 6 | targets += $(purgatory-y) | |
| 7 | PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y)) | |
| 8 | ||
| 9 | $(obj)/string.o: $(srctree)/lib/string.c FORCE | |
| 10 | $(call if_changed_rule,cc_o_c) | |
| 11 | ||
| 12 | $(obj)/ctype.o: $(srctree)/lib/ctype.c FORCE | |
| 13 | $(call if_changed_rule,cc_o_c) | |
| 14 | ||
| 15 | $(obj)/memcpy.o: $(srctree)/arch/riscv/lib/memcpy.S FORCE | |
| 16 | $(call if_changed_rule,as_o_S) | |
| 17 | ||
| 18 | $(obj)/memset.o: $(srctree)/arch/riscv/lib/memset.S FORCE | |
| 19 | $(call if_changed_rule,as_o_S) | |
| 20 | ||
| 21 | $(obj)/sha256.o: $(srctree)/lib/crypto/sha256.c FORCE | |
| 22 | $(call if_changed_rule,cc_o_c) | |
| 23 | ||
| 24 | CFLAGS_sha256.o := -D__DISABLE_EXPORTS | |
| 25 | CFLAGS_string.o := -D__DISABLE_EXPORTS | |
| 26 | CFLAGS_ctype.o := -D__DISABLE_EXPORTS | |
| 27 | ||
| 28 | # When linking purgatory.ro with -r unresolved symbols are not checked, | |
| 29 | # also link a purgatory.chk binary without -r to check for unresolved symbols. | |
| 30 | PURGATORY_LDFLAGS := -e purgatory_start -z nodefaultlib | |
| 31 | LDFLAGS_purgatory.ro := -r $(PURGATORY_LDFLAGS) | |
| 32 | LDFLAGS_purgatory.chk := $(PURGATORY_LDFLAGS) | |
| 33 | targets += purgatory.ro purgatory.chk | |
| 34 | ||
| 35 | # Sanitizer, etc. runtimes are unavailable and cannot be linked here. | |
| 36 | GCOV_PROFILE := n | |
| 37 | KASAN_SANITIZE := n | |
| 38 | UBSAN_SANITIZE := n | |
| 39 | KCSAN_SANITIZE := n | |
| 40 | KCOV_INSTRUMENT := n | |
| 41 | ||
| 42 | # These are adjustments to the compiler flags used for objects that | |
| 43 | # make up the standalone purgatory.ro | |
| 44 | ||
| 45 | PURGATORY_CFLAGS_REMOVE := -mcmodel=kernel | |
| 46 | PURGATORY_CFLAGS := -mcmodel=medany -ffreestanding -fno-zero-initialized-in-bss | |
| 47 | PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN) -DDISABLE_BRANCH_PROFILING | |
| 48 | PURGATORY_CFLAGS += -fno-stack-protector -g0 | |
| 49 | ||
| 50 | # Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That | |
| 51 | # in turn leaves some undefined symbols like __fentry__ in purgatory and not | |
| 52 | # sure how to relocate those. | |
| 53 | ifdef CONFIG_FUNCTION_TRACER | |
| 54 | PURGATORY_CFLAGS_REMOVE += $(CC_FLAGS_FTRACE) | |
| 55 | endif | |
| 56 | ||
| 57 | ifdef CONFIG_STACKPROTECTOR | |
| 58 | PURGATORY_CFLAGS_REMOVE += -fstack-protector | |
| 59 | endif | |
| 60 | ||
| 61 | ifdef CONFIG_STACKPROTECTOR_STRONG | |
| 62 | PURGATORY_CFLAGS_REMOVE += -fstack-protector-strong | |
| 63 | endif | |
| 64 | ||
| 65 | CFLAGS_REMOVE_purgatory.o += $(PURGATORY_CFLAGS_REMOVE) | |
| 66 | CFLAGS_purgatory.o += $(PURGATORY_CFLAGS) | |
| 67 | ||
| 68 | CFLAGS_REMOVE_sha256.o += $(PURGATORY_CFLAGS_REMOVE) | |
| 69 | CFLAGS_sha256.o += $(PURGATORY_CFLAGS) | |
| 70 | ||
| 71 | CFLAGS_REMOVE_string.o += $(PURGATORY_CFLAGS_REMOVE) | |
| 72 | CFLAGS_string.o += $(PURGATORY_CFLAGS) | |
| 73 | ||
| 74 | CFLAGS_REMOVE_ctype.o += $(PURGATORY_CFLAGS_REMOVE) | |
| 75 | CFLAGS_ctype.o += $(PURGATORY_CFLAGS) | |
| 76 | ||
| 77 | AFLAGS_REMOVE_entry.o += -Wa,-gdwarf-2 | |
| 78 | AFLAGS_REMOVE_memcpy.o += -Wa,-gdwarf-2 | |
| 79 | AFLAGS_REMOVE_memset.o += -Wa,-gdwarf-2 | |
| 80 | ||
| 81 | $(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE | |
| 82 | $(call if_changed,ld) | |
| 83 | ||
| 84 | $(obj)/purgatory.chk: $(obj)/purgatory.ro FORCE | |
| 85 | $(call if_changed,ld) | |
| 86 | ||
| d8357e3b | 87 | $(obj)/kexec-purgatory.o: $(obj)/purgatory.ro $(obj)/purgatory.chk |
| 736e30af | 88 | |
| 788177e7 | 89 | obj-y += kexec-purgatory.o |