^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) # SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) # linux/arch/arm/boot/compressed/Makefile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) # create a compressed vmlinuz image from the original vmlinux
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) OBJS =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) HEAD = head.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) OBJS += misc.o decompress.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) ifeq ($(CONFIG_DEBUG_UNCOMPRESS),y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) OBJS += debug.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) AFLAGS_head.o += -DDEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) FONTC = $(srctree)/lib/fonts/font_acorn_8x8.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) # string library code (-Os is enforced to keep it much smaller)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) OBJS += string.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) CFLAGS_string.o := -Os
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) ifeq ($(CONFIG_ARM_VIRT_EXT),y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) OBJS += hyp-stub.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) GCOV_PROFILE := n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) # Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) KCOV_INSTRUMENT := n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) # Architecture dependencies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) ifeq ($(CONFIG_ARCH_ACORN),y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) OBJS += ll_char_wr.o font.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) ifeq ($(CONFIG_ARCH_SA1100),y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) OBJS += head-sa1100.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) ifeq ($(CONFIG_CPU_XSCALE),y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) OBJS += head-xscale.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) OBJS += head-sharpsl.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) ifeq ($(CONFIG_CPU_CP15),y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) OBJS += big-endian.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) # The endian should be set by h/w design.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) # We now have a PIC decompressor implementation. Decompressors running
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) # from RAM should not define ZTEXTADDR. Decompressors running directly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) # from ROM or Flash must define ZTEXTADDR (preferably via the config)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) # FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) ifeq ($(CONFIG_ZBOOT_ROM),y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ZTEXTADDR := 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) ZBSSADDR := ALIGN(8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) MALLOC_SIZE := 65536
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET) -DMALLOC_SIZE=$(MALLOC_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) CPPFLAGS_vmlinux.lds := -DTEXT_START="$(ZTEXTADDR)" -DBSS_START="$(ZBSSADDR)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) CPPFLAGS_vmlinux.lds += -DTEXT_OFFSET="$(TEXT_OFFSET)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) CPPFLAGS_vmlinux.lds += -DMALLOC_SIZE="$(MALLOC_SIZE)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) compress-$(CONFIG_KERNEL_GZIP) = gzip
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) compress-$(CONFIG_KERNEL_LZO) = lzo
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) compress-$(CONFIG_KERNEL_LZMA) = lzma
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) compress-$(CONFIG_KERNEL_XZ) = xzkern
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) compress-$(CONFIG_KERNEL_LZ4) = lz4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) libfdt_objs := fdt_rw.o fdt_ro.o fdt_wip.o fdt.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) CFLAGS_REMOVE_atags_to_fdt.o += -Wframe-larger-than=${CONFIG_FRAME_WARN}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) CFLAGS_atags_to_fdt.o += -Wframe-larger-than=1280
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) OBJS += $(libfdt_objs) atags_to_fdt.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) # -fstack-protector-strong triggers protection checks in this code,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) # but it is being used too early to link to meaningful stack_chk logic.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) $(foreach o, $(libfdt_objs) atags_to_fdt.o, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) $(eval CFLAGS_$(o) := -I $(srctree)/scripts/dtc/libfdt -fno-stack-protector))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) # These were previously generated C files. When you are building the kernel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) # with O=, make sure to remove the stale files in the output tree. Otherwise,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) # the build system wrongly compiles the stale ones.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) ifdef building_out_of_srctree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) $(shell rm -f $(addprefix $(obj)/, fdt_rw.c fdt_ro.c fdt_wip.c fdt.c))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) targets := vmlinux vmlinux.lds piggy_data piggy.o \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) lib1funcs.o ashldi3.o bswapsdi2.o \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) head.o $(OBJS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) clean-files += piggy_data lib1funcs.S ashldi3.S bswapsdi2.S hyp-stub.S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) ccflags-y := -fpic $(call cc-option,-mno-single-pic-base,) -fno-builtin \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) -I$(obj) $(DISABLE_ARM_SSP_PER_TASK_PLUGIN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) ccflags-remove-$(CONFIG_FUNCTION_TRACER) += -pg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) asflags-y := -DZIMAGE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) # Supply kernel BSS size to the decompressor via a linker symbol.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) KBSS_SZ = $(shell echo $$(($$($(NM) $(obj)/../../../../vmlinux | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) sed -n -e 's/^\([^ ]*\) [ABD] __bss_start$$/-0x\1/p' \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) -e 's/^\([^ ]*\) [ABD] __bss_stop$$/+0x\1/p') )) )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) # Supply ZRELADDR to the decompressor via a linker symbol.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) ifneq ($(CONFIG_AUTO_ZRELADDR),y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) LDFLAGS_vmlinux += --be8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) # Report unresolved symbol references
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) LDFLAGS_vmlinux += --no-undefined
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) # Delete all temporary local symbols
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) LDFLAGS_vmlinux += -X
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) # Report orphan sections
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) ifdef CONFIG_LD_ORPHAN_WARN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) LDFLAGS_vmlinux += --orphan-handling=warn
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) # Next argument is a linker script
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) LDFLAGS_vmlinux += -T
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) # For __aeabi_uidivmod
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) lib1funcs = $(obj)/lib1funcs.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) $(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) $(call cmd,shipped)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) # For __aeabi_llsl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) ashldi3 = $(obj)/ashldi3.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) $(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) $(call cmd,shipped)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) # For __bswapsi2, __bswapdi2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) bswapsdi2 = $(obj)/bswapsdi2.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) $(obj)/bswapsdi2.S: $(srctree)/arch/$(SRCARCH)/lib/bswapsdi2.S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) $(call cmd,shipped)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) # We need to prevent any GOTOFF relocs being used with references
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) # to symbols in the .bss section since we cannot relocate them
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) # independently from the rest at run time. This can be achieved by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) # ensuring that no private .bss symbols exist, as global symbols
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) # always have a GOT entry which is what we need.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) # The .data section is already discarded by the linker script so no need
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) # to bother about it here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) check_for_bad_syms = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) bad_syms=$$($(NM) $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) [ -z "$$bad_syms" ] || \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) ( echo "following symbols must have non local/private scope:" >&2; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) echo "$$bad_syms" >&2; false )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) check_for_multiple_zreladdr = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) echo 'multiple zreladdrs: $(ZRELADDR)'; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) false; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) efi-obj-$(CONFIG_EFI_STUB) := $(objtree)/drivers/firmware/efi/libstub/lib.a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.o \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) $(bswapsdi2) $(efi-obj-y) FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) @$(check_for_multiple_zreladdr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) $(call if_changed,ld)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) @$(check_for_bad_syms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) $(obj)/piggy_data: $(obj)/../Image FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) $(call if_changed,$(compress-y))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) $(obj)/piggy.o: $(obj)/piggy_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) CFLAGS_font.o := -Dstatic=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) $(obj)/font.c: $(FONTC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) $(call cmd,shipped)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) AFLAGS_hyp-stub.o := -Wa,-march=armv7-a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) $(obj)/hyp-stub.S: $(srctree)/arch/$(SRCARCH)/kernel/hyp-stub.S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) $(call cmd,shipped)