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