1*f4f75ad5SArd Biesheuvel# 2*f4f75ad5SArd Biesheuvel# The stub may be linked into the kernel proper or into a separate boot binary, 3*f4f75ad5SArd Biesheuvel# but in either case, it executes before the kernel does (with MMU disabled) so 4*f4f75ad5SArd Biesheuvel# things like ftrace and stack-protector are likely to cause trouble if left 5*f4f75ad5SArd Biesheuvel# enabled, even if doing so doesn't break the build. 6*f4f75ad5SArd Biesheuvel# 7*f4f75ad5SArd Biesheuvelcflags-$(CONFIG_X86_32) := -march=i386 8*f4f75ad5SArd Biesheuvelcflags-$(CONFIG_X86_64) := -mcmodel=small 9*f4f75ad5SArd Biesheuvelcflags-$(CONFIG_X86) += -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2 \ 10*f4f75ad5SArd Biesheuvel -fPIC -fno-strict-aliasing -mno-red-zone \ 11*f4f75ad5SArd Biesheuvel -mno-mmx -mno-sse -DDISABLE_BRANCH_PROFILING 12*f4f75ad5SArd Biesheuvel 13*f4f75ad5SArd Biesheuvelcflags-$(CONFIG_ARM64) := $(subst -pg,,$(KBUILD_CFLAGS)) 14*f4f75ad5SArd Biesheuvelcflags-$(CONFIG_ARM) := $(subst -pg,,$(KBUILD_CFLAGS)) \ 15*f4f75ad5SArd Biesheuvel -fno-builtin -fpic -mno-single-pic-base 16*f4f75ad5SArd Biesheuvel 17*f4f75ad5SArd BiesheuvelKBUILD_CFLAGS := $(cflags-y) \ 18*f4f75ad5SArd Biesheuvel $(call cc-option,-ffreestanding) \ 19*f4f75ad5SArd Biesheuvel $(call cc-option,-fno-stack-protector) 20*f4f75ad5SArd Biesheuvel 21*f4f75ad5SArd BiesheuvelGCOV_PROFILE := n 22*f4f75ad5SArd Biesheuvel 23*f4f75ad5SArd Biesheuvellib-y := efi-stub-helper.o 24*f4f75ad5SArd Biesheuvellib-$(CONFIG_EFI_ARMSTUB) += arm-stub.o fdt.o 25*f4f75ad5SArd Biesheuvel 26*f4f75ad5SArd BiesheuvelCFLAGS_fdt.o += -I$(srctree)/scripts/dtc/libfdt/ 27