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