1b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 21da177e4SLinus Torvalds# 31da177e4SLinus Torvalds# linux/arch/arm/boot/compressed/Makefile 41da177e4SLinus Torvalds# 51da177e4SLinus Torvalds# create a compressed vmlinuz image from the original vmlinux 61da177e4SLinus Torvalds# 71da177e4SLinus Torvalds 8f45b1149SSimon HormanOBJS = 9f45b1149SSimon Horman 101da177e4SLinus TorvaldsHEAD = head.o 11f45b1149SSimon HormanOBJS += misc.o decompress.o 123b4af9bcSShawn Guoifeq ($(CONFIG_DEBUG_UNCOMPRESS),y) 133b4af9bcSShawn GuoOBJS += debug.o 142596a72dSLinus WalleijAFLAGS_head.o += -DDEBUG 153b4af9bcSShawn Guoendif 16ee89bd6bSGeert UytterhoevenFONTC = $(srctree)/lib/fonts/font_acorn_8x8.c 171da177e4SLinus Torvalds 18df4879faSNicolas Pitre# string library code (-Os is enforced to keep it much smaller) 19df4879faSNicolas PitreOBJS += string.o 20df4879faSNicolas PitreCFLAGS_string.o := -Os 21df4879faSNicolas Pitre 22424e5994SDave Martinifeq ($(CONFIG_ARM_VIRT_EXT),y) 23424e5994SDave MartinOBJS += hyp-stub.o 24424e5994SDave Martinendif 25424e5994SDave Martin 2675c34906SVincent SandersGCOV_PROFILE := n 27d5d44e7eSLinus WalleijKASAN_SANITIZE := n 2875c34906SVincent Sanders 2975851720SDmitry Vyukov# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in. 3075851720SDmitry VyukovKCOV_INSTRUMENT := n 3175851720SDmitry Vyukov 321da177e4SLinus Torvalds# 331da177e4SLinus Torvalds# Architecture dependencies 341da177e4SLinus Torvalds# 351da177e4SLinus Torvaldsifeq ($(CONFIG_ARCH_ACORN),y) 364486b863SRussell KingOBJS += ll_char_wr.o font.o 371da177e4SLinus Torvaldsendif 381da177e4SLinus Torvalds 391da177e4SLinus Torvaldsifeq ($(CONFIG_ARCH_SA1100),y) 401da177e4SLinus TorvaldsOBJS += head-sa1100.o 411da177e4SLinus Torvaldsendif 421da177e4SLinus Torvalds 431da177e4SLinus Torvaldsifeq ($(CONFIG_CPU_XSCALE),y) 441da177e4SLinus TorvaldsOBJS += head-xscale.o 451da177e4SLinus Torvaldsendif 461da177e4SLinus Torvalds 479c3fca2eSEric Miaoifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y) 481da177e4SLinus TorvaldsOBJS += head-sharpsl.o 491da177e4SLinus Torvaldsendif 501da177e4SLinus Torvalds 5126584853SCatalin Marinasifeq ($(CONFIG_CPU_ENDIAN_BE32),y) 52f12d0d7cSHyok S. Choiifeq ($(CONFIG_CPU_CP15),y) 531da177e4SLinus TorvaldsOBJS += big-endian.o 54f12d0d7cSHyok S. Choielse 55f12d0d7cSHyok S. Choi# The endian should be set by h/w design. 56f12d0d7cSHyok S. Choiendif 571da177e4SLinus Torvaldsendif 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds# 601da177e4SLinus Torvalds# We now have a PIC decompressor implementation. Decompressors running 611da177e4SLinus Torvalds# from RAM should not define ZTEXTADDR. Decompressors running directly 621da177e4SLinus Torvalds# from ROM or Flash must define ZTEXTADDR (preferably via the config) 631da177e4SLinus Torvalds# FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK 641da177e4SLinus Torvaldsifeq ($(CONFIG_ZBOOT_ROM),y) 651da177e4SLinus TorvaldsZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT) 661da177e4SLinus TorvaldsZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS) 671da177e4SLinus Torvaldselse 681da177e4SLinus TorvaldsZTEXTADDR := 0 693bd2cbb9SNicolas PitreZBSSADDR := ALIGN(8) 701da177e4SLinus Torvaldsendif 711da177e4SLinus Torvalds 72adc5f702SRussell KingMALLOC_SIZE := 65536 73adc5f702SRussell King 74adc5f702SRussell KingAFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET) -DMALLOC_SIZE=$(MALLOC_SIZE) 75c79bf928SRussell KingCPPFLAGS_vmlinux.lds := -DTEXT_START="$(ZTEXTADDR)" -DBSS_START="$(ZBSSADDR)" 7683dfeedbSRussell KingCPPFLAGS_vmlinux.lds += -DTEXT_OFFSET="$(TEXT_OFFSET)" 77adc5f702SRussell KingCPPFLAGS_vmlinux.lds += -DMALLOC_SIZE="$(MALLOC_SIZE)" 781da177e4SLinus Torvalds 79f57deb0bSMasahiro Yamadacompress-$(CONFIG_KERNEL_GZIP) = gzip 80f57deb0bSMasahiro Yamadacompress-$(CONFIG_KERNEL_LZO) = lzo 81f57deb0bSMasahiro Yamadacompress-$(CONFIG_KERNEL_LZMA) = lzma 82f57deb0bSMasahiro Yamadacompress-$(CONFIG_KERNEL_XZ) = xzkern 83f57deb0bSMasahiro Yamadacompress-$(CONFIG_KERNEL_LZ4) = lz4 84e7db7b42SAlbin Tonnerre 857ae4a78dSMasahiro Yamadalibfdt_objs := fdt_rw.o fdt_ro.o fdt_wip.o fdt.o 86b90b9a38SNicolas Pitre 87b90b9a38SNicolas Pitreifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y) 88b30d0289SDavid HeidelbergCFLAGS_REMOVE_atags_to_fdt.o += -Wframe-larger-than=${CONFIG_FRAME_WARN} 89b30d0289SDavid HeidelbergCFLAGS_atags_to_fdt.o += -Wframe-larger-than=1280 90b90b9a38SNicolas PitreOBJS += $(libfdt_objs) atags_to_fdt.o 91b90b9a38SNicolas Pitreendif 920673cb38SGeert Uytterhoevenifeq ($(CONFIG_USE_OF),y) 930673cb38SGeert UytterhoevenOBJS += $(libfdt_objs) fdt_check_mem_start.o 940673cb38SGeert Uytterhoevenendif 95b90b9a38SNicolas Pitre 9653f67545SMasahiro Yamadatargets := vmlinux vmlinux.lds piggy_data piggy.o \ 97b44c72deSMasahiro Yamada lib1funcs.o ashldi3.o bswapsdi2.o \ 98684c1201SMasahiro Yamada head.o $(OBJS) 99014c257cSAbhishek Sagar 100331f5f63SMasahiro Yamadaclean-files += lib1funcs.S ashldi3.S bswapsdi2.S hyp-stub.S 101f1b957d3SMagnus Damm 1028c36a757SArnd BergmannKBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING 1038c36a757SArnd Bergmann 10489604523SArd Biesheuvelccflags-y := -fpic $(call cc-option,-mno-single-pic-base,) -fno-builtin \ 105*672513bfSArd Biesheuvel -I$(srctree)/scripts/dtc/libfdt -fno-stack-protector \ 10689604523SArd Biesheuvel -I$(obj) $(DISABLE_ARM_SSP_PER_TASK_PLUGIN) 10715d5761aSMasahiro Yamadaccflags-remove-$(CONFIG_FUNCTION_TRACER) += -pg 108da94a829SArnd Bergmannasflags-y := -DZIMAGE 1091da177e4SLinus Torvalds 1105ffb04f6SNicolas Pitre# Supply kernel BSS size to the decompressor via a linker symbol. 11129c623d6SDmitry GolovinKBSS_SZ = $(shell echo $$(($$($(NM) $(obj)/../../../../vmlinux | \ 112c4e792d1SArd Biesheuvel sed -n -e 's/^\([^ ]*\) [ABD] __bss_start$$/-0x\1/p' \ 113c4e792d1SArd Biesheuvel -e 's/^\([^ ]*\) [ABD] __bss_stop$$/+0x\1/p') )) ) 1145ffb04f6SNicolas PitreLDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ) 1159e84ed63SRussell King# Supply ZRELADDR to the decompressor via a linker symbol. 1169e84ed63SRussell Kingifneq ($(CONFIG_AUTO_ZRELADDR),y) 117d239b1dcSNicolas PitreLDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR) 1189e84ed63SRussell Kingendif 11926584853SCatalin Marinasifeq ($(CONFIG_CPU_ENDIAN_BE8),y) 12026584853SCatalin MarinasLDFLAGS_vmlinux += --be8 12126584853SCatalin Marinasendif 122e7db7b42SAlbin Tonnerre# Report unresolved symbol references 123e7db7b42SAlbin TonnerreLDFLAGS_vmlinux += --no-undefined 124e7db7b42SAlbin Tonnerre# Delete all temporary local symbols 125e7db7b42SAlbin TonnerreLDFLAGS_vmlinux += -X 1264409d2f8SKees Cook# Report orphan sections 12759612b24SNathan Chancellorifdef CONFIG_LD_ORPHAN_WARN 12859612b24SNathan ChancellorLDFLAGS_vmlinux += --orphan-handling=warn 12959612b24SNathan Chancellorendif 130e7db7b42SAlbin Tonnerre# Next argument is a linker script 131e7db7b42SAlbin TonnerreLDFLAGS_vmlinux += -T 132e7db7b42SAlbin Tonnerre 133e7db7b42SAlbin Tonnerre# For __aeabi_uidivmod 134e7db7b42SAlbin Tonnerrelib1funcs = $(obj)/lib1funcs.o 135e7db7b42SAlbin Tonnerre 13663d15148SNicolas Pitre$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S 137e7db7b42SAlbin Tonnerre $(call cmd,shipped) 1381da177e4SLinus Torvalds 139a7f464f3SImre Kaloz# For __aeabi_llsl 140a7f464f3SImre Kalozashldi3 = $(obj)/ashldi3.o 141a7f464f3SImre Kaloz 142a7f464f3SImre Kaloz$(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S 143a7f464f3SImre Kaloz $(call cmd,shipped) 144a7f464f3SImre Kaloz 145017f161aSKim Phillips# For __bswapsi2, __bswapdi2 146017f161aSKim Phillipsbswapsdi2 = $(obj)/bswapsdi2.o 147017f161aSKim Phillips 148017f161aSKim Phillips$(obj)/bswapsdi2.S: $(srctree)/arch/$(SRCARCH)/lib/bswapsdi2.S 149017f161aSKim Phillips $(call cmd,shipped) 150017f161aSKim Phillips 1518d7e4cc2SNicolas Pitre# We need to prevent any GOTOFF relocs being used with references 1528d7e4cc2SNicolas Pitre# to symbols in the .bss section since we cannot relocate them 1538d7e4cc2SNicolas Pitre# independently from the rest at run time. This can be achieved by 1548d7e4cc2SNicolas Pitre# ensuring that no private .bss symbols exist, as global symbols 1558d7e4cc2SNicolas Pitre# always have a GOT entry which is what we need. 1568d7e4cc2SNicolas Pitre# The .data section is already discarded by the linker script so no need 1578d7e4cc2SNicolas Pitre# to bother about it here. 1588d7e4cc2SNicolas Pitrecheck_for_bad_syms = \ 15929c623d6SDmitry Golovinbad_syms=$$($(NM) $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \ 1608d7e4cc2SNicolas Pitre[ -z "$$bad_syms" ] || \ 1618d7e4cc2SNicolas Pitre ( echo "following symbols must have non local/private scope:" >&2; \ 162172caf19SMasahiro Yamada echo "$$bad_syms" >&2; false ) 1638d7e4cc2SNicolas Pitre 16460aac932SSascha Hauercheck_for_multiple_zreladdr = \ 1654bdad983SRabin Vincentif [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \ 16660aac932SSascha Hauer echo 'multiple zreladdrs: $(ZRELADDR)'; \ 16760aac932SSascha Hauer echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \ 16860aac932SSascha Hauer false; \ 16960aac932SSascha Hauerfi 17060aac932SSascha Hauer 17181a0bc39SRoy Franzefi-obj-$(CONFIG_EFI_STUB) := $(objtree)/drivers/firmware/efi/libstub/lib.a 17281a0bc39SRoy Franz 17353f67545SMasahiro Yamada$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.o \ 174017f161aSKim Phillips $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) \ 17581a0bc39SRoy Franz $(bswapsdi2) $(efi-obj-y) FORCE 17660aac932SSascha Hauer @$(check_for_multiple_zreladdr) 1771da177e4SLinus Torvalds $(call if_changed,ld) 1788d7e4cc2SNicolas Pitre @$(check_for_bad_syms) 1791da177e4SLinus Torvalds 18053f67545SMasahiro Yamada$(obj)/piggy_data: $(obj)/../Image FORCE 181f57deb0bSMasahiro Yamada $(call if_changed,$(compress-y)) 1821da177e4SLinus Torvalds 18353f67545SMasahiro Yamada$(obj)/piggy.o: $(obj)/piggy_data 1841da177e4SLinus Torvalds 1854486b863SRussell KingCFLAGS_font.o := -Dstatic= 1864486b863SRussell King 1874486b863SRussell King$(obj)/font.c: $(FONTC) 1884486b863SRussell King $(call cmd,shipped) 1891da177e4SLinus Torvalds 190c7edd7f9SJean-Philippe BruckerAFLAGS_hyp-stub.o := -Wa,-march=armv7-a 191c7edd7f9SJean-Philippe Brucker 192424e5994SDave Martin$(obj)/hyp-stub.S: $(srctree)/arch/$(SRCARCH)/kernel/hyp-stub.S 193424e5994SDave Martin $(call cmd,shipped) 194