diff options
Diffstat (limited to 'drivers/firmware/efi/libstub/Makefile')
| -rw-r--r-- | drivers/firmware/efi/libstub/Makefile | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile index 81432d0c904b..b1601aad7e1a 100644 --- a/drivers/firmware/efi/libstub/Makefile +++ b/drivers/firmware/efi/libstub/Makefile @@ -26,8 +26,10 @@ cflags-$(CONFIG_ARM) := $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) \ $(call cc-option,-mno-single-pic-base) cflags-$(CONFIG_RISCV) := $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) \ -fpic +cflags-$(CONFIG_LOONGARCH) := $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) \ + -fpie -cflags-$(CONFIG_EFI_GENERIC_STUB) += -I$(srctree)/scripts/dtc/libfdt +cflags-$(CONFIG_EFI_PARAMS_FROM_FDT) += -I$(srctree)/scripts/dtc/libfdt KBUILD_CFLAGS := $(cflags-y) -Os -DDISABLE_BRANCH_PROFILING \ -include $(srctree)/include/linux/hidden.h \ @@ -37,8 +39,17 @@ KBUILD_CFLAGS := $(cflags-y) -Os -DDISABLE_BRANCH_PROFILING \ $(call cc-option,-fno-addrsig) \ -D__DISABLE_EXPORTS +# +# struct randomization only makes sense for Linux internal types, which the EFI +# stub code never touches, so let's turn off struct randomization for the stub +# altogether +# +KBUILD_CFLAGS := $(filter-out $(RANDSTRUCT_CFLAGS), $(KBUILD_CFLAGS)) + # remove SCS flags from all objects in this directory KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_SCS), $(KBUILD_CFLAGS)) +# disable CFI +KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_CFI), $(KBUILD_CFLAGS)) # disable LTO KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS)) @@ -58,21 +69,32 @@ lib-y := efi-stub-helper.o gop.o secureboot.o tpm.o \ skip_spaces.o lib-cmdline.o lib-ctype.o \ alignedmem.o relocate.o vsprintf.o -# include the stub's generic dependencies from lib/ when building for ARM/arm64 -efi-deps-y := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c fdt_empty_tree.c fdt_sw.c +# include the stub's libfdt dependencies from lib/ when needed +libfdt-deps := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c \ + fdt_empty_tree.c fdt_sw.c + +lib-$(CONFIG_EFI_PARAMS_FROM_FDT) += fdt.o \ + $(patsubst %.c,lib-%.o,$(libfdt-deps)) $(obj)/lib-%.o: $(srctree)/lib/%.c FORCE $(call if_changed_rule,cc_o_c) -lib-$(CONFIG_EFI_GENERIC_STUB) += efi-stub.o fdt.o string.o \ - $(patsubst %.c,lib-%.o,$(efi-deps-y)) +lib-$(CONFIG_EFI_GENERIC_STUB) += efi-stub.o string.o intrinsics.o systable.o lib-$(CONFIG_ARM) += arm32-stub.o lib-$(CONFIG_ARM64) += arm64-stub.o lib-$(CONFIG_X86) += x86-stub.o lib-$(CONFIG_RISCV) += riscv-stub.o +lib-$(CONFIG_LOONGARCH) += loongarch-stub.o + CFLAGS_arm32-stub.o := -DTEXT_OFFSET=$(TEXT_OFFSET) +zboot-obj-$(CONFIG_RISCV) := lib-clz_ctz.o lib-ashldi3.o +lib-$(CONFIG_EFI_ZBOOT) += zboot.o $(zboot-obj-y) + +extra-y := $(lib-y) +lib-y := $(patsubst %.o,%.stub.o,$(lib-y)) + # Even when -mbranch-protection=none is set, Clang will generate a # .note.gnu.property for code-less object files (like lib/ctype.c), # so work around this by explicitly removing the unwanted section. @@ -112,9 +134,6 @@ STUBCOPY_RELOC-$(CONFIG_ARM) := R_ARM_ABS # a verification pass to see if any absolute relocations exist in any of the # object files. # -extra-y := $(lib-y) -lib-y := $(patsubst %.o,%.stub.o,$(lib-y)) - STUBCOPY_FLAGS-$(CONFIG_ARM64) += --prefix-alloc-sections=.init \ --prefix-symbols=__efistub_ STUBCOPY_RELOC-$(CONFIG_ARM64) := R_AARCH64_ABS @@ -126,6 +145,12 @@ STUBCOPY_FLAGS-$(CONFIG_RISCV) += --prefix-alloc-sections=.init \ --prefix-symbols=__efistub_ STUBCOPY_RELOC-$(CONFIG_RISCV) := R_RISCV_HI20 +# For LoongArch, keep all the symbols in .init section and make sure that no +# absolute symbols references exist. +STUBCOPY_FLAGS-$(CONFIG_LOONGARCH) += --prefix-alloc-sections=.init \ + --prefix-symbols=__efistub_ +STUBCOPY_RELOC-$(CONFIG_LOONGARCH) := R_LARCH_MARK_LA + $(obj)/%.stub.o: $(obj)/%.o FORCE $(call if_changed,stubcopy) |