1 # SPDX-License-Identifier: GPL-2.0
2
3 purgatory-y := purgatory.o sha256.o entry.o st
4 ifeq ($(CONFIG_KASAN_GENERIC)$(CONFIG_KASAN_SW
5 purgatory-y += strcmp.o strlen.o strncmp.o
6 endif
7
8 targets += $(purgatory-y)
9 PURGATORY_OBJS = $(addprefix $(obj)/,$(purgato
10
11 $(obj)/string.o: $(srctree)/lib/string.c FORCE
12 $(call if_changed_rule,cc_o_c)
13
14 $(obj)/ctype.o: $(srctree)/lib/ctype.c FORCE
15 $(call if_changed_rule,cc_o_c)
16
17 $(obj)/memcpy.o: $(srctree)/arch/riscv/lib/mem
18 $(call if_changed_rule,as_o_S)
19
20 $(obj)/memset.o: $(srctree)/arch/riscv/lib/mem
21 $(call if_changed_rule,as_o_S)
22
23 $(obj)/strcmp.o: $(srctree)/arch/riscv/lib/str
24 $(call if_changed_rule,as_o_S)
25
26 $(obj)/strlen.o: $(srctree)/arch/riscv/lib/str
27 $(call if_changed_rule,as_o_S)
28
29 $(obj)/strncmp.o: $(srctree)/arch/riscv/lib/st
30 $(call if_changed_rule,as_o_S)
31
32 $(obj)/sha256.o: $(srctree)/lib/crypto/sha256.
33 $(call if_changed_rule,cc_o_c)
34
35 CFLAGS_sha256.o := -D__DISABLE_EXPORTS -D__NO_
36 CFLAGS_string.o := -D__DISABLE_EXPORTS
37 CFLAGS_ctype.o := -D__DISABLE_EXPORTS
38
39 # When profile-guided optimization is enabled,
40 # overlapping text sections, which is not supp
41 # optimization flags.
42 KBUILD_CFLAGS := $(filter-out -fprofile-sample
43
44 # When linking purgatory.ro with -r unresolved
45 # also link a purgatory.chk binary without -r
46 PURGATORY_LDFLAGS := -e purgatory_start -z nod
47 LDFLAGS_purgatory.ro := -r $(PURGATORY_LDFLAGS
48 LDFLAGS_purgatory.chk := $(PURGATORY_LDFLAGS)
49 targets += purgatory.ro purgatory.chk
50
51 # These are adjustments to the compiler flags
52 # make up the standalone purgatory.ro
53
54 PURGATORY_CFLAGS_REMOVE := -mcmodel=kernel
55 PURGATORY_CFLAGS := -mcmodel=medany -ffreestan
56 PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN
57 PURGATORY_CFLAGS += -fno-stack-protector -g0
58
59 # Default KBUILD_CFLAGS can have -pg option se
60 # in turn leaves some undefined symbols like _
61 # sure how to relocate those.
62 ifdef CONFIG_FUNCTION_TRACER
63 PURGATORY_CFLAGS_REMOVE += $(CC_FLAGS_
64 endif
65
66 ifdef CONFIG_STACKPROTECTOR
67 PURGATORY_CFLAGS_REMOVE += -fstack-pro
68 endif
69
70 ifdef CONFIG_STACKPROTECTOR_STRONG
71 PURGATORY_CFLAGS_REMOVE += -fstack-pro
72 endif
73
74 ifdef CONFIG_CFI_CLANG
75 PURGATORY_CFLAGS_REMOVE += $(CC_FLAGS_
76 endif
77
78 ifdef CONFIG_RELOCATABLE
79 PURGATORY_CFLAGS_REMOVE += -fPIE
80 endif
81
82 ifdef CONFIG_SHADOW_CALL_STACK
83 PURGATORY_CFLAGS_REMOVE += $(CC_FLAGS_
84 endif
85
86 CFLAGS_REMOVE_purgatory.o += $(PURGATORY
87 CFLAGS_purgatory.o += $(PURGATORY
88
89 CFLAGS_REMOVE_sha256.o += $(PURGATORY
90 CFLAGS_sha256.o += $(PURGATORY
91
92 CFLAGS_REMOVE_string.o += $(PURGATORY
93 CFLAGS_string.o += $(PURGATORY
94
95 CFLAGS_REMOVE_ctype.o += $(PURGATORY
96 CFLAGS_ctype.o += $(PURGATORY
97
98 asflags-remove-y += $(foreach x
99
100 $(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
101 $(call if_changed,ld)
102
103 $(obj)/purgatory.chk: $(obj)/purgatory.ro FORC
104 $(call if_changed,ld)
105
106 $(obj)/kexec-purgatory.o: $(obj)/purgatory.ro
107
108 obj-y += kexec-purgatory.o
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