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