1# SPDX-License-Identifier: GPL-2.0-only 2# 3# Create a self-extracting compressed vmlinux image from the original 4# vmlinux. aboot loads and enters it like a plain vmlinux. 5# 6 7OBJECTS := head.o misc.o trampoline.o piggy.o 8OBJECTS += memcpy.o memmove.o memset.o 9OBJECTS += __divqu.o __remqu.o __divlu.o __remlu.o 10targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz 11targets += $(OBJECTS) 12 13# The stub runs before the kernel has identified the CPU it booted on, so 14# build it for the base Alpha instruction set rather than inheriting the 15# kernel's -mcpu=. 16KBUILD_CFLAGS := -D__KERNEL__ -std=gnu11 -Os -fno-strict-aliasing 17KBUILD_CFLAGS += -fno-PIE -ffreestanding -fno-stack-protector 18KBUILD_CFLAGS += -fno-asynchronous-unwind-tables 19KBUILD_CFLAGS += -pipe -mcpu=ev4 -mno-fp-regs -ffixed-8 20KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING -D__DISABLE_EXPORTS 21KBUILD_CFLAGS += $(CC_FLAGS_DIALECT) 22KBUILD_AFLAGS := -D__ASSEMBLY__ $(KBUILD_CFLAGS) 23 24# The stub has no sanitizer or coverage runtime. arch/alpha/lib/lib.a is 25# built with the kernel's instrumentation and -mcpu=, so build private 26# copies of the library routines the stub needs instead of linking it. 27UBSAN_SANITIZE := n 28GCOV_PROFILE := n 29 30$(obj)/memcpy.o: $(srctree)/arch/alpha/lib/memcpy.c FORCE 31 $(call if_changed_dep,cc_o_c) 32 33$(obj)/memmove.o: $(srctree)/arch/alpha/lib/memmove.S FORCE 34 $(call if_changed_dep,as_o_S) 35 36$(obj)/memset.o: $(srctree)/arch/alpha/lib/memset.S FORCE 37 $(call if_changed_dep,as_o_S) 38 39AFLAGS___divqu.o := -DDIV 40AFLAGS___remqu.o := -DREM 41AFLAGS___divlu.o := -DDIV -DINTSIZE 42AFLAGS___remlu.o := -DREM -DINTSIZE 43 44$(addprefix $(obj)/,__divqu.o __remqu.o __divlu.o __remlu.o): $(srctree)/arch/alpha/lib/divide.S FORCE 45 $(call if_changed_dep,as_o_S) 46 47LDFLAGS_vmlinux := -X --orphan-handling=warn -T 48$(obj)/vmlinux: $(obj)/vmlinux.lds $(addprefix $(obj)/, $(OBJECTS)) FORCE 49 $(call if_changed,ld) 50 51OBJCOPYFLAGS_vmlinux.bin := -R .comment -R .note -S 52$(obj)/vmlinux.bin: vmlinux FORCE 53 $(call if_changed,objcopy) 54 55suffix-$(CONFIG_KERNEL_GZIP) := gz 56 57$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE 58 $(call if_changed,gzip) 59 60LDFLAGS_piggy.o := -r --format binary --oformat elf64-alpha -T 61$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y) FORCE 62 $(call if_changed,ld) 63