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 15# set the default size of the mallocing area for decompressing 16BOOT_HEAP_SIZE := 0x400000 17 18# Disable Function Tracer 19KBUILD_CFLAGS := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//") 20 21KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS)) 22 23KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \ 24 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" 25 26KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \ 27 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \ 28 -DKERNEL_ENTRY=0x$(shell $(NM) $(objtree)/$(KBUILD_IMAGE) 2>/dev/null | grep " kernel_entry" | cut -f1 -d \ ) 29 30targets := head.o decompress.o dbg.o uart-16550.o uart-alchemy.o 31 32# decompressor objects (linked with vmlinuz) 33vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/dbg.o 34 35ifdef CONFIG_DEBUG_ZBOOT 36vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o 37vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o 38endif 39 40targets += vmlinux.bin 41OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 42$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE 43 $(call if_changed,objcopy) 44 45tool_$(CONFIG_KERNEL_GZIP) = gzip 46tool_$(CONFIG_KERNEL_BZIP2) = bzip2 47tool_$(CONFIG_KERNEL_LZMA) = lzma 48tool_$(CONFIG_KERNEL_LZO) = lzo 49 50targets += vmlinux.bin.z 51$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE 52 $(call if_changed,$(tool_y)) 53 54targets += piggy.o 55OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ 56 --set-section-flags=.image=contents,alloc,load,readonly,data 57$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE 58 $(call if_changed,objcopy) 59 60# Calculate the load address of the compressed kernel image 61hostprogs-y := calc_vmlinuz_load_addr 62 63ifeq ($(CONFIG_MACH_JZ4740),y) 64VMLINUZ_LOAD_ADDRESS := 0x80600000 65else 66VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ 67 $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS)) 68endif 69 70vmlinuzobjs-y += $(obj)/piggy.o 71 72quiet_cmd_zld = LD $@ 73 cmd_zld = $(LD) $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ 74quiet_cmd_strip = STRIP $@ 75 cmd_strip = $(STRIP) -s $@ 76vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr 77 $(call cmd,zld) 78 $(call cmd,strip) 79 80# 81# Some DECstations need all possible sections of an ECOFF executable 82# 83ifdef CONFIG_MACH_DECSTATION 84 e2eflag := -a 85endif 86 87# elf2ecoff can only handle 32bit image 88hostprogs-y += ../elf2ecoff 89 90ifdef CONFIG_32BIT 91 VMLINUZ = vmlinuz 92else 93 VMLINUZ = vmlinuz.32 94endif 95 96quiet_cmd_32 = OBJCOPY $@ 97 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 98vmlinuz.32: vmlinuz 99 $(call cmd,32) 100 101quiet_cmd_ecoff = ECOFF $@ 102 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) 103vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ) 104 $(call cmd,ecoff) 105 106OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 107vmlinuz.bin: vmlinuz 108 $(call cmd,objcopy) 109 110OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 111vmlinuz.srec: vmlinuz 112 $(call cmd,objcopy) 113 114clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec} 115