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 39UBSAN_SANITIZE := n 40 41# decompressor objects (linked with vmlinuz) 42vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/bswapsi.o 43 44ifdef CONFIG_DEBUG_ZBOOT 45vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o 46vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o 47vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o 48vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o 49vmlinuzobjs-$(CONFIG_ATH79) += $(obj)/uart-ath79.o 50endif 51 52extra-y += uart-ath79.c 53$(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c 54 $(call cmd,shipped) 55 56vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o 57 58extra-y += ashldi3.c 59$(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE 60 $(call if_changed,shipped) 61 62extra-y += bswapsi.c 63$(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE 64 $(call if_changed,shipped) 65 66targets := $(notdir $(vmlinuzobjs-y)) 67 68targets += vmlinux.bin 69OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 70$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE 71 $(call if_changed,objcopy) 72 73tool_$(CONFIG_KERNEL_GZIP) = gzip 74tool_$(CONFIG_KERNEL_BZIP2) = bzip2 75tool_$(CONFIG_KERNEL_LZ4) = lz4 76tool_$(CONFIG_KERNEL_LZMA) = lzma 77tool_$(CONFIG_KERNEL_LZO) = lzo 78tool_$(CONFIG_KERNEL_XZ) = xzkern 79tool_$(CONFIG_KERNEL_ZSTD) = zstd22 80 81targets += vmlinux.bin.z 82$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE 83 $(call if_changed,$(tool_y)) 84 85targets += piggy.o dummy.o 86OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ 87 --set-section-flags=.image=contents,alloc,load,readonly,data 88$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE 89 $(call if_changed,objcopy) 90 91HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE) 92 93# Calculate the load address of the compressed kernel image 94hostprogs := calc_vmlinuz_load_addr 95 96ifneq ($(zload-y),) 97VMLINUZ_LOAD_ADDRESS := $(zload-y) 98else 99VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ 100 $(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS)) 101endif 102UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS) 103 104vmlinuzobjs-y += $(obj)/piggy.o 105 106quiet_cmd_zld = LD $@ 107 cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ 108quiet_cmd_strip = STRIP $@ 109 cmd_strip = $(STRIP) -s $@ 110vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr 111 $(call cmd,zld) 112 $(call cmd,strip) 113 114# 115# Some DECstations need all possible sections of an ECOFF executable 116# 117ifdef CONFIG_MACH_DECSTATION 118 e2eflag := -a 119endif 120 121# elf2ecoff can only handle 32bit image 122hostprogs += ../elf2ecoff 123 124ifdef CONFIG_32BIT 125 VMLINUZ = vmlinuz 126else 127 VMLINUZ = vmlinuz.32 128endif 129 130quiet_cmd_32 = OBJCOPY $@ 131 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 132vmlinuz.32: vmlinuz 133 $(call cmd,32) 134 135quiet_cmd_ecoff = ECOFF $@ 136 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) 137vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ) 138 $(call cmd,ecoff) 139 140OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 141vmlinuz.bin: vmlinuz 142 $(call cmd,objcopy) 143 144OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 145vmlinuz.srec: vmlinuz 146 $(call cmd,objcopy) 147 148uzImage.bin: vmlinuz.bin FORCE 149 $(call if_changed,uimage,none) 150 151clean-files += $(objtree)/vmlinuz 152clean-files += $(objtree)/vmlinuz.32 153clean-files += $(objtree)/vmlinuz.ecoff 154clean-files += $(objtree)/vmlinuz.bin 155clean-files += $(objtree)/vmlinuz.srec 156