1# 2# This file is subject to the terms and conditions of the GNU General Public 3# License. 4# 5# Adapted for MIPS Pete Popov, Dan Malek 6# 7# Copyright (C) 1994 by Linus Torvalds 8# Adapted for PowerPC by Gary Thomas 9# modified by Cort (cort@cs.nmt.edu) 10# 11# Copyright (C) 2009 Lemote Inc. & DSLab, Lanzhou University 12# Author: Wu Zhangjin <wuzhangjin@gmail.com> 13# 14 15include $(srctree)/arch/mips/Kbuild.platforms 16 17# set the default size of the mallocing area for decompressing 18BOOT_HEAP_SIZE := 0x400000 19 20# Disable Function Tracer 21KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_FTRACE), $(KBUILD_CFLAGS)) 22 23KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS)) 24 25# Disable lq/sq in zboot 26ifdef CONFIG_CPU_LOONGSON64 27KBUILD_CFLAGS := $(filter-out -march=loongson3a, $(KBUILD_CFLAGS)) -march=mips64r2 28endif 29 30KBUILD_CFLAGS := $(KBUILD_CFLAGS) -D__KERNEL__ -D__DISABLE_EXPORTS \ 31 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" 32 33KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \ 34 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \ 35 -DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS) 36 37# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in. 38KCOV_INSTRUMENT := n 39GCOV_PROFILE := n 40UBSAN_SANITIZE := n 41 42# decompressor objects (linked with vmlinuz) 43vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/bswapsi.o 44 45ifdef CONFIG_DEBUG_ZBOOT 46vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o 47vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o 48vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o 49vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o 50vmlinuzobjs-$(CONFIG_ATH79) += $(obj)/uart-ath79.o 51endif 52 53vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o 54 55vmlinuzobjs-$(CONFIG_KERNEL_ZSTD) += $(obj)/bswapdi.o 56 57targets := $(notdir $(vmlinuzobjs-y)) 58 59targets += vmlinux.bin 60 61OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 62 63$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE 64 $(call if_changed,objcopy) 65 66tool_$(CONFIG_KERNEL_GZIP) = gzip 67tool_$(CONFIG_KERNEL_BZIP2) = bzip2 68tool_$(CONFIG_KERNEL_LZ4) = lz4 69tool_$(CONFIG_KERNEL_LZMA) = lzma 70tool_$(CONFIG_KERNEL_LZO) = lzo 71tool_$(CONFIG_KERNEL_XZ) = xzkern 72tool_$(CONFIG_KERNEL_ZSTD) = zstd22 73 74targets += vmlinux.bin.z 75 76$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE 77 $(call if_changed,$(tool_y)) 78 79targets += piggy.o dummy.o 80 81OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ 82 --set-section-flags=.image=contents,alloc,load,readonly,data 83 84$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE 85 $(call if_changed,objcopy) 86 87HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE) 88 89# Calculate the load address of the compressed kernel image 90hostprogs := calc_vmlinuz_load_addr 91 92ifneq ($(zload-y),) 93VMLINUZ_LOAD_ADDRESS := $(zload-y) 94else 95VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ 96 $(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS)) 97endif 98UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS) 99 100vmlinuzobjs-y += $(obj)/piggy.o 101 102targets += ../../../../vmlinuz 103 104quiet_cmd_zld = LD $@ 105 cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ 106quiet_cmd_strip = STRIP $@ 107 cmd_strip = $(STRIP) -s $@ 108 109$(objtree)/vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr 110 $(call cmd,zld) 111 $(call cmd,strip) 112 113objboot := $(objtree)/arch/mips/boot 114 115$(objboot)/vmlinuz: $(objtree)/vmlinuz FORCE 116 117# 118# Some DECstations need all possible sections of an ECOFF executable 119# 120ifdef CONFIG_MACH_DECSTATION 121 e2eflag := -a 122endif 123 124# elf2ecoff can only handle 32bit image 125hostprogs += ../elf2ecoff 126 127ifdef CONFIG_32BIT 128 VMLINUZ = $(objtree)/vmlinuz 129else 130 VMLINUZ = $(objboot)/vmlinuz.32 131endif 132 133targets += ../vmlinuz.32 134 135quiet_cmd_32 = OBJCOPY $@ 136 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 137 138$(objboot)/vmlinuz.32: $(objtree)/vmlinuz 139 $(call cmd,32) 140 141targets += ../vmlinuz.ecoff 142 143quiet_cmd_ecoff = ECOFF $@ 144 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) 145 146$(objboot)/vmlinuz.ecoff: $(objboot)/elf2ecoff $(VMLINUZ) 147 $(call cmd,ecoff) 148 149targets += ../vmlinuz.bin 150 151OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 152 153$(objboot)/vmlinuz.bin: $(objtree)/vmlinuz 154 $(call cmd,objcopy) 155 156targets += ../vmlinuz.srec 157 158OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 159 160$(objboot)/vmlinuz.srec: $(objtree)/vmlinuz 161 $(call cmd,objcopy) 162 163targets += ../uzImage.bin 164 165$(objboot)/uzImage.bin: $(objboot)/vmlinuz.bin FORCE 166 $(call if_changed,uimage,none) 167 168# 169# Flattened Image Tree (.itb) image 170# 171 172ifeq ($(ADDR_BITS),32) 173itb_addr_cells = 1 174endif 175ifeq ($(ADDR_BITS),64) 176itb_addr_cells = 2 177endif 178 179targets += ../vmlinuz.its.S 180 181quiet_cmd_its_cat = CAT $@ 182 cmd_its_cat = cat $(real-prereqs) >$@ 183 184$(objboot)/vmlinuz.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS)) FORCE 185 $(call if_changed,its_cat) 186 187targets += ../vmlinuz.its 188 189quiet_cmd_cpp_its_S = ITS $@ 190 cmd_cpp_its_S = $(CPP) -P -C -o $@ $< \ 191 -DKERNEL_NAME="\"Linux $(KERNELRELEASE)\"" \ 192 -DVMLINUX_BINARY="\"$(2)\"" \ 193 -DVMLINUX_COMPRESSION="\"none\"" \ 194 -DVMLINUX_LOAD_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ 195 -DVMLINUX_ENTRY_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ 196 -DADDR_BITS=$(ADDR_BITS) \ 197 -DADDR_CELLS=$(itb_addr_cells) 198 199$(objboot)/vmlinuz.its: $(objboot)/vmlinuz.its.S FORCE 200 $(call if_changed,cpp_its_S,vmlinuz.bin) 201 202targets += ../vmlinuz.itb 203 204quiet_cmd_itb-image = ITB $@ 205 cmd_itb-image = \ 206 env PATH="$(objtree)/scripts/dtc:$(PATH)" \ 207 $(BASH) $(MKIMAGE) \ 208 -D "-I dts -O dtb -p 500 \ 209 --include $(objtree)/arch/mips \ 210 --warning no-unit_address_vs_reg" \ 211 -f $(2) $@ 212 213$(objboot)/vmlinuz.itb: $(objboot)/vmlinuz.its $(objboot)/vmlinuz.bin FORCE 214 $(call if_changed,itb-image,$<) 215