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 # decompressor objects (linked with vmlinuz)
  33 vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o
  34
  35 ifdef CONFIG_DEBUG_ZBOOT
  36 vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT)                  += $(obj)/dbg.o
  37 vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
  38 vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o
  39 vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY)                 += $(obj)/uart-alchemy.o
  40 endif
  41
  42 vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o
  43
  44 $(obj)/ashldi3.o: KBUILD_CFLAGS += -I$(srctree)/arch/mips/lib
  45 $(obj)/ashldi3.c: $(srctree)/arch/mips/lib/ashldi3.c
  46         $(call cmd,shipped)
  47
  48 targets := $(notdir $(vmlinuzobjs-y))
  49
  50 targets += vmlinux.bin
  51 OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
  52 $(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
  53         $(call if_changed,objcopy)
  54
  55 tool_$(CONFIG_KERNEL_GZIP)    = gzip
  56 tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
  57 tool_$(CONFIG_KERNEL_LZ4)     = lz4
  58 tool_$(CONFIG_KERNEL_LZMA)    = lzma
  59 tool_$(CONFIG_KERNEL_LZO)     = lzo
  60 tool_$(CONFIG_KERNEL_XZ)      = xzkern
  61
  62 targets += vmlinux.bin.z
  63 $(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
  64         $(call if_changed,$(tool_y))
  65
  66 targets += piggy.o dummy.o
  67 OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \
  68                         --set-section-flags=.image=contents,alloc,load,readonly,data
  69 $(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
  70         $(call if_changed,objcopy)
  71
  72 # Calculate the load address of the compressed kernel image
  73 hostprogs-y := calc_vmlinuz_load_addr
  74
  75 ifneq ($(zload-y),)
  76 VMLINUZ_LOAD_ADDRESS := $(zload-y)
  77 else
  78 VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
  79                 $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS))
  80 endif
  81
  82 vmlinuzobjs-y += $(obj)/piggy.o
  83
  84 quiet_cmd_zld = LD      $@
  85       cmd_zld = $(LD) $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
  86 quiet_cmd_strip = STRIP   $@
  87       cmd_strip = $(STRIP) -s $@
  88 vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
  89         $(call cmd,zld)
  90         $(call cmd,strip)
  91
  92 #
  93 # Some DECstations need all possible sections of an ECOFF executable
  94 #
  95 ifdef CONFIG_MACH_DECSTATION
  96   e2eflag := -a
  97 endif
  98
  99 # elf2ecoff can only handle 32bit image
 100 hostprogs-y += ../elf2ecoff
 101
 102 ifdef CONFIG_32BIT
 103         VMLINUZ = vmlinuz
 104 else
 105         VMLINUZ = vmlinuz.32
 106 endif
 107
 108 quiet_cmd_32 = OBJCOPY $@
 109       cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
 110 vmlinuz.32: vmlinuz
 111         $(call cmd,32)
 112
 113 quiet_cmd_ecoff = ECOFF   $@
 114       cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
 115 vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
 116         $(call cmd,ecoff)
 117
 118 OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
 119 vmlinuz.bin: vmlinuz
 120         $(call cmd,objcopy)
 121
 122 OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
 123 vmlinuz.srec: vmlinuz
 124         $(call cmd,objcopy)
 125
 126 clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec}