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 -pg, $(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 $(obj)/string.o 44 45ifdef CONFIG_DEBUG_ZBOOT 46vmlinuzobjs-$(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 $(obj)/bswapsi.o 58 59extra-y += ashldi3.c 60$(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE 61 $(call if_changed,shipped) 62 63extra-y += bswapsi.c 64$(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE 65 $(call if_changed,shipped) 66 67targets := $(notdir $(vmlinuzobjs-y)) 68 69targets += vmlinux.bin 70 71OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 72 73$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE 74 $(call if_changed,objcopy) 75 76tool_$(CONFIG_KERNEL_GZIP) = gzip 77tool_$(CONFIG_KERNEL_BZIP2) = bzip2 78tool_$(CONFIG_KERNEL_LZ4) = lz4 79tool_$(CONFIG_KERNEL_LZMA) = lzma 80tool_$(CONFIG_KERNEL_LZO) = lzo 81tool_$(CONFIG_KERNEL_XZ) = xzkern 82tool_$(CONFIG_KERNEL_ZSTD) = zstd22 83 84targets += vmlinux.bin.z 85 86$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE 87 $(call if_changed,$(tool_y)) 88 89targets += piggy.o dummy.o 90 91OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ 92 --set-section-flags=.image=contents,alloc,load,readonly,data 93 94$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE 95 $(call if_changed,objcopy) 96 97HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE) 98 99# Calculate the load address of the compressed kernel image 100hostprogs := calc_vmlinuz_load_addr 101 102ifneq ($(zload-y),) 103VMLINUZ_LOAD_ADDRESS := $(zload-y) 104else 105VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ 106 $(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS)) 107endif 108UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS) 109 110vmlinuzobjs-y += $(obj)/piggy.o 111 112targets += ../../../../vmlinuz 113 114quiet_cmd_zld = LD $@ 115 cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ 116quiet_cmd_strip = STRIP $@ 117 cmd_strip = $(STRIP) -s $@ 118 119$(objtree)/vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr 120 $(call cmd,zld) 121 $(call cmd,strip) 122 123objboot := $(objtree)/arch/mips/boot 124 125$(objboot)/vmlinuz: $(objtree)/vmlinuz FORCE 126 127# 128# Some DECstations need all possible sections of an ECOFF executable 129# 130ifdef CONFIG_MACH_DECSTATION 131 e2eflag := -a 132endif 133 134# elf2ecoff can only handle 32bit image 135hostprogs += ../elf2ecoff 136 137ifdef CONFIG_32BIT 138 VMLINUZ = $(objtree)/vmlinuz 139else 140 VMLINUZ = $(objboot)/vmlinuz.32 141endif 142 143targets += ../vmlinuz.32 144 145quiet_cmd_32 = OBJCOPY $@ 146 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 147 148$(objboot)/vmlinuz.32: $(objtree)/vmlinuz 149 $(call cmd,32) 150 151targets += ../vmlinuz.ecoff 152 153quiet_cmd_ecoff = ECOFF $@ 154 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) 155 156$(objboot)/vmlinuz.ecoff: $(objboot)/elf2ecoff $(VMLINUZ) 157 $(call cmd,ecoff) 158 159targets += ../vmlinuz.bin 160 161OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 162 163$(objboot)/vmlinuz.bin: $(objtree)/vmlinuz 164 $(call cmd,objcopy) 165 166targets += ../vmlinuz.srec 167 168OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 169 170$(objboot)/vmlinuz.srec: $(objtree)/vmlinuz 171 $(call cmd,objcopy) 172 173targets += ../uzImage.bin 174 175$(objboot)/uzImage.bin: $(objboot)/vmlinuz.bin FORCE 176 $(call if_changed,uimage,none) 177 178# 179# Flattened Image Tree (.itb) image 180# 181 182ifeq ($(ADDR_BITS),32) 183itb_addr_cells = 1 184endif 185ifeq ($(ADDR_BITS),64) 186itb_addr_cells = 2 187endif 188 189targets += ../vmlinuz.its.S 190 191quiet_cmd_its_cat = CAT $@ 192 cmd_its_cat = cat $(real-prereqs) >$@ 193 194$(objboot)/vmlinuz.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS)) FORCE 195 $(call if_changed,its_cat) 196 197targets += ../vmlinuz.its 198 199quiet_cmd_cpp_its_S = ITS $@ 200 cmd_cpp_its_S = $(CPP) -P -C -o $@ $< \ 201 -DKERNEL_NAME="\"Linux $(KERNELRELEASE)\"" \ 202 -DVMLINUX_BINARY="\"$(2)\"" \ 203 -DVMLINUX_COMPRESSION="\"none\"" \ 204 -DVMLINUX_LOAD_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ 205 -DVMLINUX_ENTRY_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ 206 -DADDR_BITS=$(ADDR_BITS) \ 207 -DADDR_CELLS=$(itb_addr_cells) 208 209$(objboot)/vmlinuz.its: $(objboot)/vmlinuz.its.S FORCE 210 $(call if_changed,cpp_its_S,vmlinuz.bin) 211 212targets += ../vmlinuz.itb 213 214quiet_cmd_itb-image = ITB $@ 215 cmd_itb-image = \ 216 env PATH="$(objtree)/scripts/dtc:$(PATH)" \ 217 $(BASH) $(MKIMAGE) \ 218 -D "-I dts -O dtb -p 500 \ 219 --include $(objtree)/arch/mips \ 220 --warning no-unit_address_vs_reg" \ 221 -f $(2) $@ 222 223$(objboot)/vmlinuz.itb: $(objboot)/vmlinuz.its $(objboot)/vmlinuz.bin FORCE 224 $(call if_changed,itb-image,$<) 225