projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
| c0dd6716 JP |
2 | OBJECT_FILES_NON_STANDARD := y |
| 3 | ||
| 8fc5b4d4 VG |
4 | purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string.o |
| 5 | ||
| 6 | targets += $(purgatory-y) | |
| 7 | PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y)) | |
| 8 | ||
| 4ce97317 ND |
9 | $(obj)/string.o: $(srctree)/arch/x86/boot/compressed/string.c FORCE |
| 10 | $(call if_changed_rule,cc_o_c) | |
| 11 | ||
| ad767ee8 | 12 | $(obj)/sha256.o: $(srctree)/lib/crypto/sha256.c FORCE |
| df6f2801 PR |
13 | $(call if_changed_rule,cc_o_c) |
| 14 | ||
| 01d3aee8 HG |
15 | CFLAGS_sha256.o := -D__DISABLE_EXPORTS |
| 16 | ||
| e4160b2e HG |
17 | # When linking purgatory.ro with -r unresolved symbols are not checked, |
| 18 | # also link a purgatory.chk binary without -r to check for unresolved symbols. | |
| 19 | PURGATORY_LDFLAGS := -e purgatory_start -nostdlib -z nodefaultlib | |
| 20 | LDFLAGS_purgatory.ro := -r $(PURGATORY_LDFLAGS) | |
| 21 | LDFLAGS_purgatory.chk := $(PURGATORY_LDFLAGS) | |
| 22 | targets += purgatory.ro purgatory.chk | |
| 8fc5b4d4 | 23 | |
| e2ac07c0 HG |
24 | # Sanitizer, etc. runtimes are unavailable and cannot be linked here. |
| 25 | GCOV_PROFILE := n | |
| 13a6798e | 26 | KASAN_SANITIZE := n |
| e2ac07c0 | 27 | UBSAN_SANITIZE := n |
| 40d04110 | 28 | KCSAN_SANITIZE := n |
| 543c37cb ER |
29 | KCOV_INSTRUMENT := n |
| 30 | ||
| e16c2983 SW |
31 | # These are adjustments to the compiler flags used for objects that |
| 32 | # make up the standalone purgatory.ro | |
| 33 | ||
| 34 | PURGATORY_CFLAGS_REMOVE := -mcmodel=kernel | |
| 35 | PURGATORY_CFLAGS := -mcmodel=large -ffreestanding -fno-zero-initialized-in-bss | |
| e2ac07c0 | 36 | PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN) -DDISABLE_BRANCH_PROFILING |
| 893ab004 | 37 | PURGATORY_CFLAGS += -fno-stack-protector |
| e16c2983 | 38 | |
| 8fc5b4d4 VG |
39 | # Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That |
| 40 | # in turn leaves some undefined symbols like __fentry__ in purgatory and not | |
| b059f801 ND |
41 | # sure how to relocate those. |
| 42 | ifdef CONFIG_FUNCTION_TRACER | |
| e16c2983 | 43 | PURGATORY_CFLAGS_REMOVE += $(CC_FLAGS_FTRACE) |
| b059f801 ND |
44 | endif |
| 45 | ||
| 46 | ifdef CONFIG_STACKPROTECTOR | |
| e16c2983 | 47 | PURGATORY_CFLAGS_REMOVE += -fstack-protector |
| b059f801 ND |
48 | endif |
| 49 | ||
| 50 | ifdef CONFIG_STACKPROTECTOR_STRONG | |
| e16c2983 | 51 | PURGATORY_CFLAGS_REMOVE += -fstack-protector-strong |
| b059f801 ND |
52 | endif |
| 53 | ||
| 54 | ifdef CONFIG_RETPOLINE | |
| e16c2983 | 55 | PURGATORY_CFLAGS_REMOVE += $(RETPOLINE_CFLAGS) |
| b059f801 | 56 | endif |
| 8fc5b4d4 | 57 | |
| e16c2983 SW |
58 | CFLAGS_REMOVE_purgatory.o += $(PURGATORY_CFLAGS_REMOVE) |
| 59 | CFLAGS_purgatory.o += $(PURGATORY_CFLAGS) | |
| 60 | ||
| 61 | CFLAGS_REMOVE_sha256.o += $(PURGATORY_CFLAGS_REMOVE) | |
| 62 | CFLAGS_sha256.o += $(PURGATORY_CFLAGS) | |
| 63 | ||
| 64 | CFLAGS_REMOVE_string.o += $(PURGATORY_CFLAGS_REMOVE) | |
| 65 | CFLAGS_string.o += $(PURGATORY_CFLAGS) | |
| 66 | ||
| 8fc5b4d4 VG |
67 | $(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE |
| 68 | $(call if_changed,ld) | |
| 69 | ||
| e4160b2e HG |
70 | $(obj)/purgatory.chk: $(obj)/purgatory.ro FORCE |
| 71 | $(call if_changed,ld) | |
| 72 | ||
| 8fc5b4d4 VG |
73 | targets += kexec-purgatory.c |
| 74 | ||
| 75 | quiet_cmd_bin2c = BIN2C $@ | |
| c417fbce | 76 | cmd_bin2c = $(objtree)/scripts/bin2c kexec_purgatory < $< > $@ |
| 8fc5b4d4 | 77 | |
| e4160b2e | 78 | $(obj)/kexec-purgatory.c: $(obj)/purgatory.ro $(obj)/purgatory.chk FORCE |
| 8fc5b4d4 | 79 | $(call if_changed,bin2c) |
| 8fc5b4d4 | 80 | |
| 74ca317c | 81 | obj-$(CONFIG_KEXEC_FILE) += kexec-purgatory.o |