arch/s390/purgatory/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2
   3 OBJECT_FILES_NON_STANDARD := y
   4
   5 purgatory-y := head.o purgatory.o string.o sha256.o mem.o
   6
   7 targets += $(purgatory-y) purgatory.lds purgatory purgatory.chk purgatory.ro
   8 PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y))
   9
  10 $(obj)/sha256.o: $(srctree)/lib/crypto/sha256.c FORCE
  11         $(call if_changed_rule,cc_o_c)
  12
  13 CFLAGS_sha256.o := -D__DISABLE_EXPORTS
  14
  15 $(obj)/mem.o: $(srctree)/arch/s390/lib/mem.S FORCE
  16         $(call if_changed_rule,as_o_S)
  17
  18 KCOV_INSTRUMENT := n
  19 GCOV_PROFILE := n
  20 UBSAN_SANITIZE := n
  21 KASAN_SANITIZE := n
  22
  23 KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes
  24 KBUILD_CFLAGS += -Wno-pointer-sign -Wno-sign-compare
  25 KBUILD_CFLAGS += -fno-zero-initialized-in-bss -fno-builtin -ffreestanding
  26 KBUILD_CFLAGS += -c -MD -Os -m64 -msoft-float -fno-common
  27 KBUILD_CFLAGS += $(CLANG_FLAGS)
  28 KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
  29 KBUILD_AFLAGS := $(filter-out -DCC_USING_EXPOLINE,$(KBUILD_AFLAGS))
  30
  31 # Since we link purgatory with -r unresolved symbols are not checked, so we
  32 # also link a purgatory.chk binary without -r to check for unresolved symbols.
  33 PURGATORY_LDFLAGS := -nostdlib -z nodefaultlib
  34 LDFLAGS_purgatory := -r $(PURGATORY_LDFLAGS) -T
  35 LDFLAGS_purgatory.chk := -e purgatory_start $(PURGATORY_LDFLAGS)
  36 $(obj)/purgatory: $(obj)/purgatory.lds $(PURGATORY_OBJS) FORCE
  37                 $(call if_changed,ld)
  38
  39 $(obj)/purgatory.chk: $(obj)/purgatory FORCE
  40                 $(call if_changed,ld)
  41
  42 OBJCOPYFLAGS_purgatory.ro := -O elf64-s390
  43 OBJCOPYFLAGS_purgatory.ro += --remove-section='*debug*'
  44 OBJCOPYFLAGS_purgatory.ro += --remove-section='.comment'
  45 OBJCOPYFLAGS_purgatory.ro += --remove-section='.note.*'
  46 $(obj)/purgatory.ro: $(obj)/purgatory $(obj)/purgatory.chk FORCE
  47                 $(call if_changed,objcopy)
  48
  49 $(obj)/kexec-purgatory.o: $(obj)/kexec-purgatory.S $(obj)/purgatory.ro FORCE
  50         $(call if_changed_rule,as_o_S)
  51
  52 obj-$(CONFIG_ARCH_HAS_KEXEC_PURGATORY) += kexec-purgatory.o