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# decompressor objects (linked with vmlinuz) 38vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/bswapsi.o 39 40ifdef CONFIG_DEBUG_ZBOOT 41vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o 42vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o 43vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o 44vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o 45vmlinuzobjs-$(CONFIG_ATH79) += $(obj)/uart-ath79.o 46endif 47 48vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o 49 50vmlinuzobjs-$(CONFIG_KERNEL_ZSTD) += $(obj)/bswapdi.o $(obj)/ashldi3.o $(obj)/clz_ctz.o 51 52targets := $(notdir $(vmlinuzobjs-y)) 53 54targets += vmlinux.bin 55 56OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 57 58$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE 59 $(call if_changed,objcopy) 60 61tool_$(CONFIG_KERNEL_GZIP) = gzip 62tool_$(CONFIG_KERNEL_BZIP2) = bzip2_with_size 63tool_$(CONFIG_KERNEL_LZ4) = lz4_with_size 64tool_$(CONFIG_KERNEL_LZMA) = lzma_with_size 65tool_$(CONFIG_KERNEL_LZO) = lzo_with_size 66tool_$(CONFIG_KERNEL_XZ) = xzkern_with_size 67tool_$(CONFIG_KERNEL_ZSTD) = zstd22_with_size 68 69targets += vmlinux.bin.z 70 71$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE 72 $(call if_changed,$(tool_y)) 73 74targets += piggy.o dummy.o 75 76OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ 77 --set-section-flags=.image=contents,alloc,load,readonly,data 78 79$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE 80 $(call if_changed,objcopy) 81 82HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE) 83 84# Calculate the load address of the compressed kernel image 85hostprogs := calc_vmlinuz_load_addr 86 87ifneq (0x0,$(CONFIG_ZBOOT_LOAD_ADDRESS)) 88zload-y = $(CONFIG_ZBOOT_LOAD_ADDRESS) 89endif 90 91ifneq ($(zload-y),) 92VMLINUZ_LOAD_ADDRESS := $(zload-y) 93else 94VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ 95 $(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS)) 96endif 97UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS) 98 99vmlinuzobjs-y += $(obj)/piggy.o 100 101targets += ../../../../vmlinuz 102 103quiet_cmd_zld = LD $@ 104 cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ 105quiet_cmd_strip = STRIP $@ 106 cmd_strip = $(STRIP) -s $@ 107 108$(objtree)/vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr 109 $(call cmd,zld) 110 $(call cmd,strip) 111 112objboot := $(objtree)/arch/mips/boot 113 114$(objboot)/vmlinuz: $(objtree)/vmlinuz FORCE 115 116# 117# Some DECstations need all possible sections of an ECOFF executable 118# 119ifdef CONFIG_MACH_DECSTATION 120 e2eflag := -a 121endif 122 123# elf2ecoff can only handle 32bit image 124hostprogs += ../elf2ecoff 125 126ifdef CONFIG_32BIT 127 VMLINUZ = $(objtree)/vmlinuz 128else 129 VMLINUZ = $(objboot)/vmlinuz.32 130endif 131 132targets += ../vmlinuz.32 133 134quiet_cmd_32 = OBJCOPY $@ 135 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 136 137$(objboot)/vmlinuz.32: $(objtree)/vmlinuz 138 $(call cmd,32) 139 140targets += ../vmlinuz.ecoff 141 142quiet_cmd_ecoff = ECOFF $@ 143 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) 144 145$(objboot)/vmlinuz.ecoff: $(objboot)/elf2ecoff $(VMLINUZ) 146 $(call cmd,ecoff) 147 148targets += ../vmlinuz.bin 149 150OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 151 152$(objboot)/vmlinuz.bin: $(objtree)/vmlinuz 153 $(call cmd,objcopy) 154 155targets += ../vmlinuz.srec 156 157OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 158 159$(objboot)/vmlinuz.srec: $(objtree)/vmlinuz 160 $(call cmd,objcopy) 161 162targets += ../uzImage.bin 163 164$(objboot)/uzImage.bin: $(objboot)/vmlinuz.bin FORCE 165 $(call if_changed,uimage,none) 166 167# 168# Flattened Image Tree (.itb) image 169# 170 171ifeq ($(ADDR_BITS),32) 172itb_addr_cells = 1 173endif 174ifeq ($(ADDR_BITS),64) 175itb_addr_cells = 2 176endif 177 178targets += ../vmlinuz.its.S 179 180quiet_cmd_its_cat = CAT $@ 181 cmd_its_cat = cat $(real-prereqs) >$@ 182 183$(objboot)/vmlinuz.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS)) FORCE 184 $(call if_changed,its_cat) 185 186targets += ../vmlinuz.its 187 188quiet_cmd_cpp_its_S = ITS $@ 189 cmd_cpp_its_S = $(CPP) -P -C -o $@ $< \ 190 -DKERNEL_NAME="\"Linux $(KERNELRELEASE)\"" \ 191 -DVMLINUX_BINARY="\"$(2)\"" \ 192 -DVMLINUX_COMPRESSION="\"none\"" \ 193 -DVMLINUX_LOAD_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ 194 -DVMLINUX_ENTRY_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ 195 -DADDR_BITS=$(ADDR_BITS) \ 196 -DADDR_CELLS=$(itb_addr_cells) 197 198$(objboot)/vmlinuz.its: $(objboot)/vmlinuz.its.S FORCE 199 $(call if_changed,cpp_its_S,vmlinuz.bin) 200 201targets += ../vmlinuz.itb 202 203quiet_cmd_itb-image = ITB $@ 204 cmd_itb-image = \ 205 env PATH="$(objtree)/scripts/dtc:$(PATH)" \ 206 $(BASH) $(MKIMAGE) \ 207 -D "-I dts -O dtb -p 500 \ 208 --include $(objtree)/arch/mips \ 209 --warning no-unit_address_vs_reg" \ 210 -f $(2) $@ 211 212$(objboot)/vmlinuz.itb: $(objboot)/vmlinuz.its $(objboot)/vmlinuz.bin FORCE 213 $(call if_changed,itb-image,$<) 214