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 ([email protected]) 10# 11# Copyright (C) 2009 Lemote Inc. & DSLab, Lanzhou University 12# Author: Wu Zhangjin <[email protected]> 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 39 40# decompressor objects (linked with vmlinuz) 41vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o 42 43ifdef CONFIG_DEBUG_ZBOOT 44vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o 45vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o 46vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o 47vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o 48vmlinuzobjs-$(CONFIG_ATH79) += $(obj)/uart-ath79.o 49endif 50 51extra-y += uart-ath79.c 52$(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c 53 $(call cmd,shipped) 54 55vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o $(obj)/bswapsi.o 56 57extra-y += ashldi3.c 58$(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE 59 $(call if_changed,shipped) 60 61extra-y += bswapsi.c 62$(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE 63 $(call if_changed,shipped) 64 65targets := $(notdir $(vmlinuzobjs-y)) 66 67targets += vmlinux.bin 68 69OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 70 71$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE 72 $(call if_changed,objcopy) 73 74tool_$(CONFIG_KERNEL_GZIP) = gzip 75tool_$(CONFIG_KERNEL_BZIP2) = bzip2 76tool_$(CONFIG_KERNEL_LZ4) = lz4 77tool_$(CONFIG_KERNEL_LZMA) = lzma 78tool_$(CONFIG_KERNEL_LZO) = lzo 79tool_$(CONFIG_KERNEL_XZ) = xzkern 80tool_$(CONFIG_KERNEL_ZSTD) = zstd22 81 82targets += vmlinux.bin.z 83 84$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE 85 $(call if_changed,$(tool_y)) 86 87targets += piggy.o dummy.o 88 89OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ 90 --set-section-flags=.image=contents,alloc,load,readonly,data 91 92$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE 93 $(call if_changed,objcopy) 94 95HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE) 96 97# Calculate the load address of the compressed kernel image 98hostprogs := calc_vmlinuz_load_addr 99 100ifneq ($(zload-y),) 101VMLINUZ_LOAD_ADDRESS := $(zload-y) 102else 103VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ 104 $(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS)) 105endif 106UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS) 107 108vmlinuzobjs-y += $(obj)/piggy.o 109 110targets += ../../../../vmlinuz 111 112quiet_cmd_zld = LD $@ 113 cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ 114quiet_cmd_strip = STRIP $@ 115 cmd_strip = $(STRIP) -s $@ 116 117$(objtree)/vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr 118 $(call cmd,zld) 119 $(call cmd,strip) 120 121objboot := $(objtree)/arch/mips/boot 122 123$(objboot)/vmlinuz: $(objtree)/vmlinuz FORCE 124 125# 126# Some DECstations need all possible sections of an ECOFF executable 127# 128ifdef CONFIG_MACH_DECSTATION 129 e2eflag := -a 130endif 131 132# elf2ecoff can only handle 32bit image 133hostprogs += ../elf2ecoff 134 135ifdef CONFIG_32BIT 136 VMLINUZ = $(objtree)/vmlinuz 137else 138 VMLINUZ = $(objboot)/vmlinuz.32 139endif 140 141targets += ../vmlinuz.32 142 143quiet_cmd_32 = OBJCOPY $@ 144 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 145 146$(objboot)/vmlinuz.32: $(objtree)/vmlinuz 147 $(call cmd,32) 148 149targets += ../vmlinuz.ecoff 150 151quiet_cmd_ecoff = ECOFF $@ 152 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) 153 154$(objboot)/vmlinuz.ecoff: $(objboot)/elf2ecoff $(VMLINUZ) 155 $(call cmd,ecoff) 156 157targets += ../vmlinuz.bin 158 159OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 160 161$(objboot)/vmlinuz.bin: $(objtree)/vmlinuz 162 $(call cmd,objcopy) 163 164targets += ../vmlinuz.srec 165 166OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 167 168$(objboot)/vmlinuz.srec: $(objtree)/vmlinuz 169 $(call cmd,objcopy) 170 171targets += ../uzImage.bin 172 173$(objboot)/uzImage.bin: $(objboot)/vmlinuz.bin FORCE 174 $(call if_changed,uimage,none) 175 176# 177# Flattened Image Tree (.itb) image 178# 179 180ifeq ($(ADDR_BITS),32) 181itb_addr_cells = 1 182endif 183ifeq ($(ADDR_BITS),64) 184itb_addr_cells = 2 185endif 186 187targets += ../vmlinuz.its.S 188 189quiet_cmd_its_cat = CAT $@ 190 cmd_its_cat = cat $(real-prereqs) >$@ 191 192$(objboot)/vmlinuz.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS)) FORCE 193 $(call if_changed,its_cat) 194 195targets += ../vmlinuz.its 196 197quiet_cmd_cpp_its_S = ITS $@ 198 cmd_cpp_its_S = $(CPP) -P -C -o $@ $< \ 199 -DKERNEL_NAME="\"Linux $(KERNELRELEASE)\"" \ 200 -DVMLINUX_BINARY="\"$(2)\"" \ 201 -DVMLINUX_COMPRESSION="\"none\"" \ 202 -DVMLINUX_LOAD_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ 203 -DVMLINUX_ENTRY_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ 204 -DADDR_BITS=$(ADDR_BITS) \ 205 -DADDR_CELLS=$(itb_addr_cells) 206 207$(objboot)/vmlinuz.its: $(objboot)/vmlinuz.its.S FORCE 208 $(call if_changed,cpp_its_S,vmlinuz.bin) 209 210targets += ../vmlinuz.itb 211 212quiet_cmd_itb-image = ITB $@ 213 cmd_itb-image = \ 214 env PATH="$(objtree)/scripts/dtc:$(PATH)" \ 215 $(BASH) $(MKIMAGE) \ 216 -D "-I dts -O dtb -p 500 \ 217 --include $(objtree)/arch/mips \ 218 --warning no-unit_address_vs_reg" \ 219 -f $(2) $@ 220 221$(objboot)/vmlinuz.itb: $(objboot)/vmlinuz.its $(objboot)/vmlinuz.bin FORCE 222 $(call if_changed,itb-image,$<) 223