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=$(VMLINUX_ENTRY_ADDRESS) 29 30targets := head.o decompress.o string.o dbg.o uart-16550.o uart-alchemy.o 31 32# decompressor objects (linked with vmlinuz) 33vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o 34 35ifdef CONFIG_DEBUG_ZBOOT 36vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o 37vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o 38vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o 39endif 40 41ifdef CONFIG_KERNEL_XZ 42vmlinuzobjs-y += $(obj)/../../lib/ashldi3.o 43endif 44 45targets += vmlinux.bin 46OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 47$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE 48 $(call if_changed,objcopy) 49 50tool_$(CONFIG_KERNEL_GZIP) = gzip 51tool_$(CONFIG_KERNEL_BZIP2) = bzip2 52tool_$(CONFIG_KERNEL_LZ4) = lz4 53tool_$(CONFIG_KERNEL_LZMA) = lzma 54tool_$(CONFIG_KERNEL_LZO) = lzo 55tool_$(CONFIG_KERNEL_XZ) = xzkern 56 57targets += vmlinux.bin.z 58$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE 59 $(call if_changed,$(tool_y)) 60 61targets += piggy.o 62OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ 63 --set-section-flags=.image=contents,alloc,load,readonly,data 64$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE 65 $(call if_changed,objcopy) 66 67# Calculate the load address of the compressed kernel image 68hostprogs-y := calc_vmlinuz_load_addr 69 70ifeq ($(CONFIG_MACH_JZ4740),y) 71VMLINUZ_LOAD_ADDRESS := 0x80600000 72else 73VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ 74 $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS)) 75endif 76 77vmlinuzobjs-y += $(obj)/piggy.o 78 79quiet_cmd_zld = LD $@ 80 cmd_zld = $(LD) $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ 81quiet_cmd_strip = STRIP $@ 82 cmd_strip = $(STRIP) -s $@ 83vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr 84 $(call cmd,zld) 85 $(call cmd,strip) 86 87# 88# Some DECstations need all possible sections of an ECOFF executable 89# 90ifdef CONFIG_MACH_DECSTATION 91 e2eflag := -a 92endif 93 94# elf2ecoff can only handle 32bit image 95hostprogs-y += ../elf2ecoff 96 97ifdef CONFIG_32BIT 98 VMLINUZ = vmlinuz 99else 100 VMLINUZ = vmlinuz.32 101endif 102 103quiet_cmd_32 = OBJCOPY $@ 104 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 105vmlinuz.32: vmlinuz 106 $(call cmd,32) 107 108quiet_cmd_ecoff = ECOFF $@ 109 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) 110vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ) 111 $(call cmd,ecoff) 112 113OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 114vmlinuz.bin: vmlinuz 115 $(call cmd,objcopy) 116 117OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 118vmlinuz.srec: vmlinuz 119 $(call cmd,objcopy) 120 121clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec} 122