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 # set the default size of the mallocing area for decompressing
  16 BOOT_HEAP_SIZE := 0x400000
  17
  18 # Disable Function Tracer
  19 KBUILD_CFLAGS := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//")
  20
  21 KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS))
  22
  23 KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \
  24         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
  25
  26 KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
  27         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
  28         -DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS)
  29
  30 targets := head.o decompress.o string.o dbg.o uart-16550.o uart-alchemy.o
  31
  32 # decompressor objects (linked with vmlinuz)
  33 vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/dbg.o
  34
  35 ifdef CONFIG_DEBUG_ZBOOT
  36 vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
  37 vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY)                 += $(obj)/uart-alchemy.o
  38 endif
  39
  40 ifdef CONFIG_KERNEL_XZ
  41 vmlinuzobjs-y += $(obj)/../../lib/ashldi3.o
  42 endif
  43
  44 targets += vmlinux.bin
  45 OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
  46 $(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
  47         $(call if_changed,objcopy)
  48
  49 tool_$(CONFIG_KERNEL_GZIP)    = gzip
  50 tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
  51 tool_$(CONFIG_KERNEL_LZ4)     = lz4
  52 tool_$(CONFIG_KERNEL_LZMA)    = lzma
  53 tool_$(CONFIG_KERNEL_LZO)     = lzo
  54 tool_$(CONFIG_KERNEL_XZ)      = xzkern
  55
  56 targets += vmlinux.bin.z
  57 $(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
  58         $(call if_changed,$(tool_y))
  59
  60 targets += piggy.o
  61 OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \
  62                         --set-section-flags=.image=contents,alloc,load,readonly,data
  63 $(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
  64         $(call if_changed,objcopy)
  65
  66 # Calculate the load address of the compressed kernel image
  67 hostprogs-y := calc_vmlinuz_load_addr
  68
  69 ifeq ($(CONFIG_MACH_JZ4740),y)
  70 VMLINUZ_LOAD_ADDRESS := 0x80600000
  71 else
  72 VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
  73                 $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS))
  74 endif
  75
  76 vmlinuzobjs-y += $(obj)/piggy.o
  77
  78 quiet_cmd_zld = LD      $@
  79       cmd_zld = $(LD) $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
  80 quiet_cmd_strip = STRIP   $@
  81       cmd_strip = $(STRIP) -s $@
  82 vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
  83         $(call cmd,zld)
  84         $(call cmd,strip)
  85
  86 #
  87 # Some DECstations need all possible sections of an ECOFF executable
  88 #
  89 ifdef CONFIG_MACH_DECSTATION
  90   e2eflag := -a
  91 endif
  92
  93 # elf2ecoff can only handle 32bit image
  94 hostprogs-y += ../elf2ecoff
  95
  96 ifdef CONFIG_32BIT
  97         VMLINUZ = vmlinuz
  98 else
  99         VMLINUZ = vmlinuz.32
 100 endif
 101
 102 quiet_cmd_32 = OBJCOPY $@
 103       cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
 104 vmlinuz.32: vmlinuz
 105         $(call cmd,32)
 106
 107 quiet_cmd_ecoff = ECOFF   $@
 108       cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
 109 vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
 110         $(call cmd,ecoff)
 111
 112 OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
 113 vmlinuz.bin: vmlinuz
 114         $(call cmd,objcopy)
 115
 116 OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
 117 vmlinuz.srec: vmlinuz
 118         $(call cmd,objcopy)
 119
 120 clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec}