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) += $(obj)/uart-ath79.o 51endif 52 53extra-y += uart-ath79.c 54$(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c 55 $(call cmd,shipped) 56 57vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o 58 59vmlinuzobjs-$(CONFIG_KERNEL_ZSTD) += $(obj)/bswapdi.o $(obj)/ashldi3.o $(obj)/clz_ctz.o 60 61extra-y += ashldi3.c 62$(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE 63 $(call if_changed,shipped) 64 65extra-y += bswapsi.c 66$(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE 67 $(call if_changed,shipped) 68 69extra-y += bswapdi.c 70$(obj)/bswapdi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE 71 $(call if_changed,shipped) 72 73targets := $(notdir $(vmlinuzobjs-y)) 74 75targets += vmlinux.bin 76 77OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 78 79$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE 80 $(call if_changed,objcopy) 81 82tool_$(CONFIG_KERNEL_GZIP) = gzip 83tool_$(CONFIG_KERNEL_BZIP2) = bzip2_with_size 84tool_$(CONFIG_KERNEL_LZ4) = lz4_with_size 85tool_$(CONFIG_KERNEL_LZMA) = lzma_with_size 86tool_$(CONFIG_KERNEL_LZO) = lzo_with_size 87tool_$(CONFIG_KERNEL_XZ) = xzkern_with_size 88tool_$(CONFIG_KERNEL_ZSTD) = zstd22_with_size 89 90targets += vmlinux.bin.z 91 92$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE 93 $(call if_changed,$(tool_y)) 94 95targets += piggy.o dummy.o 96 97OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ 98 --set-section-flags=.image=contents,alloc,load,readonly,data 99 100$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE 101 $(call if_changed,objcopy) 102 103HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE) 104 105# Calculate the load address of the compressed kernel image 106hostprogs := calc_vmlinuz_load_addr 107 108ifneq ($(zload-y),) 109VMLINUZ_LOAD_ADDRESS := $(zload-y) 110else 111VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ 112 $(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS)) 113endif 114UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS) 115 116vmlinuzobjs-y += $(obj)/piggy.o 117 118targets += ../../../../vmlinuz 119 120quiet_cmd_zld = LD $@ 121 cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ 122quiet_cmd_strip = STRIP $@ 123 cmd_strip = $(STRIP) -s $@ 124 125$(objtree)/vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr 126 $(call cmd,zld) 127 $(call cmd,strip) 128 129objboot := $(objtree)/arch/mips/boot 130 131$(objboot)/vmlinuz: $(objtree)/vmlinuz FORCE 132 133# 134# Some DECstations need all possible sections of an ECOFF executable 135# 136ifdef CONFIG_MACH_DECSTATION 137 e2eflag := -a 138endif 139 140# elf2ecoff can only handle 32bit image 141hostprogs += ../elf2ecoff 142 143ifdef CONFIG_32BIT 144 VMLINUZ = $(objtree)/vmlinuz 145else 146 VMLINUZ = $(objboot)/vmlinuz.32 147endif 148 149targets += ../vmlinuz.32 150 151quiet_cmd_32 = OBJCOPY $@ 152 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 153 154$(objboot)/vmlinuz.32: $(objtree)/vmlinuz 155 $(call cmd,32) 156 157targets += ../vmlinuz.ecoff 158 159quiet_cmd_ecoff = ECOFF $@ 160 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) 161 162$(objboot)/vmlinuz.ecoff: $(objboot)/elf2ecoff $(VMLINUZ) 163 $(call cmd,ecoff) 164 165targets += ../vmlinuz.bin 166 167OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 168 169$(objboot)/vmlinuz.bin: $(objtree)/vmlinuz 170 $(call cmd,objcopy) 171 172targets += ../vmlinuz.srec 173 174OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 175 176$(objboot)/vmlinuz.srec: $(objtree)/vmlinuz 177 $(call cmd,objcopy) 178 179targets += ../uzImage.bin 180 181$(objboot)/uzImage.bin: $(objboot)/vmlinuz.bin FORCE 182 $(call if_changed,uimage,none) 183 184# 185# Flattened Image Tree (.itb) image 186# 187 188ifeq ($(ADDR_BITS),32) 189itb_addr_cells = 1 190endif 191ifeq ($(ADDR_BITS),64) 192itb_addr_cells = 2 193endif 194 195targets += ../vmlinuz.its.S 196 197quiet_cmd_its_cat = CAT $@ 198 cmd_its_cat = cat $(real-prereqs) >$@ 199 200$(objboot)/vmlinuz.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS)) FORCE 201 $(call if_changed,its_cat) 202 203targets += ../vmlinuz.its 204 205quiet_cmd_cpp_its_S = ITS $@ 206 cmd_cpp_its_S = $(CPP) -P -C -o $@ $< \ 207 -DKERNEL_NAME="\"Linux $(KERNELRELEASE)\"" \ 208 -DVMLINUX_BINARY="\"$(2)\"" \ 209 -DVMLINUX_COMPRESSION="\"none\"" \ 210 -DVMLINUX_LOAD_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ 211 -DVMLINUX_ENTRY_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ 212 -DADDR_BITS=$(ADDR_BITS) \ 213 -DADDR_CELLS=$(itb_addr_cells) 214 215$(objboot)/vmlinuz.its: $(objboot)/vmlinuz.its.S FORCE 216 $(call if_changed,cpp_its_S,vmlinuz.bin) 217 218targets += ../vmlinuz.itb 219 220quiet_cmd_itb-image = ITB $@ 221 cmd_itb-image = \ 222 env PATH="$(objtree)/scripts/dtc:$(PATH)" \ 223 $(BASH) $(MKIMAGE) \ 224 -D "-I dts -O dtb -p 500 \ 225 --include $(objtree)/arch/mips \ 226 --warning no-unit_address_vs_reg" \ 227 -f $(2) $@ 228 229$(objboot)/vmlinuz.itb: $(objboot)/vmlinuz.its $(objboot)/vmlinuz.bin FORCE 230 $(call if_changed,itb-image,$<) 231