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 41KCSAN_SANITIZE := n 42 43# decompressor objects (linked with vmlinuz) 44vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/bswapsi.o 45 46ifdef CONFIG_DEBUG_ZBOOT 47vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o 48vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o 49vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o 50vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o 51vmlinuzobjs-$(CONFIG_ATH79) += $(obj)/uart-ath79.o 52endif 53 54vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o 55 56vmlinuzobjs-$(CONFIG_KERNEL_ZSTD) += $(obj)/bswapdi.o $(obj)/ashldi3.o $(obj)/clz_ctz.o 57 58targets := $(notdir $(vmlinuzobjs-y)) 59 60targets += vmlinux.bin 61 62OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 63 64$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE 65 $(call if_changed,objcopy) 66 67tool_$(CONFIG_KERNEL_GZIP) = gzip 68tool_$(CONFIG_KERNEL_BZIP2) = bzip2_with_size 69tool_$(CONFIG_KERNEL_LZ4) = lz4_with_size 70tool_$(CONFIG_KERNEL_LZMA) = lzma_with_size 71tool_$(CONFIG_KERNEL_LZO) = lzo_with_size 72tool_$(CONFIG_KERNEL_XZ) = xzkern_with_size 73tool_$(CONFIG_KERNEL_ZSTD) = zstd22_with_size 74 75targets += vmlinux.bin.z 76 77$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE 78 $(call if_changed,$(tool_y)) 79 80targets += piggy.o dummy.o 81 82OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ 83 --set-section-flags=.image=contents,alloc,load,readonly,data 84 85$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE 86 $(call if_changed,objcopy) 87 88HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE) 89 90# Calculate the load address of the compressed kernel image 91hostprogs := calc_vmlinuz_load_addr 92 93ifneq (0x0,$(CONFIG_ZBOOT_LOAD_ADDRESS)) 94zload-y = $(CONFIG_ZBOOT_LOAD_ADDRESS) 95endif 96 97ifneq ($(zload-y),) 98VMLINUZ_LOAD_ADDRESS := $(zload-y) 99else 100VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ 101 $(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS)) 102endif 103UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS) 104 105vmlinuzobjs-y += $(obj)/piggy.o 106 107targets += ../../../../vmlinuz 108 109quiet_cmd_zld = LD $@ 110 cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ 111quiet_cmd_strip = STRIP $@ 112 cmd_strip = $(STRIP) -s $@ 113 114$(objtree)/vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr 115 $(call cmd,zld) 116 $(call cmd,strip) 117 118objboot := $(objtree)/arch/mips/boot 119 120$(objboot)/vmlinuz: $(objtree)/vmlinuz FORCE 121 122# 123# Some DECstations need all possible sections of an ECOFF executable 124# 125ifdef CONFIG_MACH_DECSTATION 126 e2eflag := -a 127endif 128 129# elf2ecoff can only handle 32bit image 130hostprogs += ../elf2ecoff 131 132ifdef CONFIG_32BIT 133 VMLINUZ = $(objtree)/vmlinuz 134else 135 VMLINUZ = $(objboot)/vmlinuz.32 136endif 137 138targets += ../vmlinuz.32 139 140quiet_cmd_32 = OBJCOPY $@ 141 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 142 143$(objboot)/vmlinuz.32: $(objtree)/vmlinuz 144 $(call cmd,32) 145 146targets += ../vmlinuz.ecoff 147 148quiet_cmd_ecoff = ECOFF $@ 149 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) 150 151$(objboot)/vmlinuz.ecoff: $(objboot)/elf2ecoff $(VMLINUZ) 152 $(call cmd,ecoff) 153 154targets += ../vmlinuz.bin 155 156OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 157 158$(objboot)/vmlinuz.bin: $(objtree)/vmlinuz 159 $(call cmd,objcopy) 160 161targets += ../vmlinuz.srec 162 163OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 164 165$(objboot)/vmlinuz.srec: $(objtree)/vmlinuz 166 $(call cmd,objcopy) 167 168targets += ../uzImage.bin 169 170$(objboot)/uzImage.bin: $(objboot)/vmlinuz.bin FORCE 171 $(call if_changed,uimage,none) 172 173# 174# Flattened Image Tree (.itb) image 175# 176 177ifeq ($(ADDR_BITS),32) 178itb_addr_cells = 1 179endif 180ifeq ($(ADDR_BITS),64) 181itb_addr_cells = 2 182endif 183 184targets += ../vmlinuz.its.S 185 186quiet_cmd_its_cat = CAT $@ 187 cmd_its_cat = cat $(real-prereqs) >$@ 188 189$(objboot)/vmlinuz.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS)) FORCE 190 $(call if_changed,its_cat) 191 192targets += ../vmlinuz.its 193 194quiet_cmd_cpp_its_S = ITS $@ 195 cmd_cpp_its_S = $(CPP) -P -C -o $@ $< \ 196 -DKERNEL_NAME="\"Linux $(KERNELRELEASE)\"" \ 197 -DVMLINUX_BINARY="\"$(2)\"" \ 198 -DVMLINUX_COMPRESSION="\"none\"" \ 199 -DVMLINUX_LOAD_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ 200 -DVMLINUX_ENTRY_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ 201 -DADDR_BITS=$(ADDR_BITS) \ 202 -DADDR_CELLS=$(itb_addr_cells) 203 204$(objboot)/vmlinuz.its: $(objboot)/vmlinuz.its.S FORCE 205 $(call if_changed,cpp_its_S,vmlinuz.bin) 206 207targets += ../vmlinuz.itb 208 209quiet_cmd_itb-image = ITB $@ 210 cmd_itb-image = \ 211 env PATH="$(objtree)/scripts/dtc:$(PATH)" \ 212 $(BASH) $(MKIMAGE) \ 213 -D "-I dts -O dtb -p 500 \ 214 --include $(objtree)/arch/mips \ 215 --warning no-unit_address_vs_reg" \ 216 -f $(2) $@ 217 218$(objboot)/vmlinuz.itb: $(objboot)/vmlinuz.its $(objboot)/vmlinuz.bin FORCE 219 $(call if_changed,itb-image,$<) 220