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 := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//") 22 23KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS)) 24 25KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \ 26 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" 27 28KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \ 29 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \ 30 -DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS) 31 32# decompressor objects (linked with vmlinuz) 33vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o 34 35ifdef CONFIG_DEBUG_ZBOOT 36vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o 37vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o 38vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o 39vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o 40endif 41 42vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o $(obj)/bswapsi.o 43 44extra-y += ashldi3.c bswapsi.c 45$(obj)/ashldi3.o $(obj)/bswapsi.o: KBUILD_CFLAGS += -I$(srctree)/arch/mips/lib 46$(obj)/ashldi3.c $(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c 47 $(call cmd,shipped) 48 49targets := $(notdir $(vmlinuzobjs-y)) 50 51targets += vmlinux.bin 52OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 53$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE 54 $(call if_changed,objcopy) 55 56tool_$(CONFIG_KERNEL_GZIP) = gzip 57tool_$(CONFIG_KERNEL_BZIP2) = bzip2 58tool_$(CONFIG_KERNEL_LZ4) = lz4 59tool_$(CONFIG_KERNEL_LZMA) = lzma 60tool_$(CONFIG_KERNEL_LZO) = lzo 61tool_$(CONFIG_KERNEL_XZ) = xzkern 62 63targets += vmlinux.bin.z 64$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE 65 $(call if_changed,$(tool_y)) 66 67targets += piggy.o dummy.o 68OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ 69 --set-section-flags=.image=contents,alloc,load,readonly,data 70$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE 71 $(call if_changed,objcopy) 72 73# Calculate the load address of the compressed kernel image 74hostprogs-y := calc_vmlinuz_load_addr 75 76ifneq ($(zload-y),) 77VMLINUZ_LOAD_ADDRESS := $(zload-y) 78else 79VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ 80 $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS)) 81endif 82 83vmlinuzobjs-y += $(obj)/piggy.o 84 85quiet_cmd_zld = LD $@ 86 cmd_zld = $(LD) $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ 87quiet_cmd_strip = STRIP $@ 88 cmd_strip = $(STRIP) -s $@ 89vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr 90 $(call cmd,zld) 91 $(call cmd,strip) 92 93# 94# Some DECstations need all possible sections of an ECOFF executable 95# 96ifdef CONFIG_MACH_DECSTATION 97 e2eflag := -a 98endif 99 100# elf2ecoff can only handle 32bit image 101hostprogs-y += ../elf2ecoff 102 103ifdef CONFIG_32BIT 104 VMLINUZ = vmlinuz 105else 106 VMLINUZ = vmlinuz.32 107endif 108 109quiet_cmd_32 = OBJCOPY $@ 110 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 111vmlinuz.32: vmlinuz 112 $(call cmd,32) 113 114quiet_cmd_ecoff = ECOFF $@ 115 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) 116vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ) 117 $(call cmd,ecoff) 118 119OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 120vmlinuz.bin: vmlinuz 121 $(call cmd,objcopy) 122 123OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 124vmlinuz.srec: vmlinuz 125 $(call cmd,objcopy) 126 127clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec} 128