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