arch/mips/boot/compressed/Makefile

   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 include $(srctree)/arch/mips/Kbuild.platforms
  16
  17 # set the default size of the mallocing area for decompressing
  18 BOOT_HEAP_SIZE := 0x400000
  19
  20 # Disable Function Tracer
  21 KBUILD_CFLAGS := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//")
  22
  23 KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS))
  24
  25 KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \
  26         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
  27
  28 KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
  29         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
  30         -DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS)
  31
  32 targets := head.o decompress.o string.o dbg.o uart-16550.o uart-alchemy.o
  33
  34 # decompressor objects (linked with vmlinuz)
  35 vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/dbg.o
  36
  37 ifdef CONFIG_DEBUG_ZBOOT
  38 vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
  39 vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY)                 += $(obj)/uart-alchemy.o
  40 endif
  41
  42 ifdef CONFIG_KERNEL_XZ
  43 vmlinuzobjs-y += $(obj)/../../lib/ashldi3.o
  44 endif
  45
  46 targets += vmlinux.bin
  47 OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
  48 $(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
  49         $(call if_changed,objcopy)
  50
  51 tool_$(CONFIG_KERNEL_GZIP)    = gzip
  52 tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
  53 tool_$(CONFIG_KERNEL_LZ4)     = lz4
  54 tool_$(CONFIG_KERNEL_LZMA)    = lzma
  55 tool_$(CONFIG_KERNEL_LZO)     = lzo
  56 tool_$(CONFIG_KERNEL_XZ)      = xzkern
  57
  58 targets += vmlinux.bin.z
  59 $(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
  60         $(call if_changed,$(tool_y))
  61
  62 targets += piggy.o
  63 OBJCOPYFLAGS_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         $(call if_changed,objcopy)
  67
  68 # Calculate the load address of the compressed kernel image
  69 hostprogs-y := calc_vmlinuz_load_addr
  70
  71 ifneq ($(zload-y),)
  72 VMLINUZ_LOAD_ADDRESS := $(zload-y)
  73 else
  74 VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
  75                 $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS))
  76 endif
  77
  78 vmlinuzobjs-y += $(obj)/piggy.o
  79
  80 quiet_cmd_zld = LD      $@
  81       cmd_zld = $(LD) $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
  82 quiet_cmd_strip = STRIP   $@
  83       cmd_strip = $(STRIP) -s $@
  84 vmlinuz: $(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 #
  91 ifdef CONFIG_MACH_DECSTATION
  92   e2eflag := -a
  93 endif
  94
  95 # elf2ecoff can only handle 32bit image
  96 hostprogs-y += ../elf2ecoff
  97
  98 ifdef CONFIG_32BIT
  99         VMLINUZ = vmlinuz
 100 else
 101         VMLINUZ = vmlinuz.32
 102 endif
 103
 104 quiet_cmd_32 = OBJCOPY $@
 105       cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
 106 vmlinuz.32: vmlinuz
 107         $(call cmd,32)
 108
 109 quiet_cmd_ecoff = ECOFF   $@
 110       cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
 111 vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
 112         $(call cmd,ecoff)
 113
 114 OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
 115 vmlinuz.bin: vmlinuz
 116         $(call cmd,objcopy)
 117
 118 OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
 119 vmlinuz.srec: vmlinuz
 120         $(call cmd,objcopy)
 121
 122 clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec}