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 := $(filter-out -pg, $(KBUILD_CFLAGS))
  22
  23 KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS))
  24
  25 KBUILD_CFLAGS := $(KBUILD_CFLAGS) -D__KERNEL__ \
  26         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
  27
  28 KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
  29         -DBOOT_HEAP_SIZE=$(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)                 += $(obj)/uart-alchemy.o
  40 vmlinuzobjs-$(CONFIG_ATH79)                        += $(obj)/uart-ath79.o
  41 endif
  42
  43 extra-y += uart-ath79.c
  44 $(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c
  45         $(call cmd,shipped)
  46
  47 vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o $(obj)/bswapsi.o
  48
  49 extra-y += ashldi3.c bswapsi.c
  50 $(obj)/ashldi3.o $(obj)/bswapsi.o: KBUILD_CFLAGS += -I$(srctree)/arch/mips/lib
  51 $(obj)/ashldi3.c $(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c
  52         $(call cmd,shipped)
  53
  54 targets := $(notdir $(vmlinuzobjs-y))
  55
  56 targets += vmlinux.bin
  57 OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
  58 $(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
  59         $(call if_changed,objcopy)
  60
  61 tool_$(CONFIG_KERNEL_GZIP)    = gzip
  62 tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
  63 tool_$(CONFIG_KERNEL_LZ4)     = lz4
  64 tool_$(CONFIG_KERNEL_LZMA)    = lzma
  65 tool_$(CONFIG_KERNEL_LZO)     = lzo
  66 tool_$(CONFIG_KERNEL_XZ)      = xzkern
  67
  68 targets += vmlinux.bin.z
  69 $(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
  70         $(call if_changed,$(tool_y))
  71
  72 targets += piggy.o dummy.o
  73 OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \
  74                         --set-section-flags=.image=contents,alloc,load,readonly,data
  75 $(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
  76         $(call if_changed,objcopy)
  77
  78 # Calculate the load address of the compressed kernel image
  79 hostprogs-y := calc_vmlinuz_load_addr
  80
  81 ifneq ($(zload-y),)
  82 VMLINUZ_LOAD_ADDRESS := $(zload-y)
  83 else
  84 VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
  85                 $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS))
  86 endif
  87 UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS)
  88
  89 vmlinuzobjs-y += $(obj)/piggy.o
  90
  91 quiet_cmd_zld = LD      $@
  92       cmd_zld = $(LD) $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
  93 quiet_cmd_strip = STRIP   $@
  94       cmd_strip = $(STRIP) -s $@
  95 vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
  96         $(call cmd,zld)
  97         $(call cmd,strip)
  98
  99 #
 100 # Some DECstations need all possible sections of an ECOFF executable
 101 #
 102 ifdef CONFIG_MACH_DECSTATION
 103   e2eflag := -a
 104 endif
 105
 106 # elf2ecoff can only handle 32bit image
 107 hostprogs-y += ../elf2ecoff
 108
 109 ifdef CONFIG_32BIT
 110         VMLINUZ = vmlinuz
 111 else
 112         VMLINUZ = vmlinuz.32
 113 endif
 114
 115 quiet_cmd_32 = OBJCOPY $@
 116       cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
 117 vmlinuz.32: vmlinuz
 118         $(call cmd,32)
 119
 120 quiet_cmd_ecoff = ECOFF   $@
 121       cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
 122 vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
 123         $(call cmd,ecoff)
 124
 125 OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
 126 vmlinuz.bin: vmlinuz
 127         $(call cmd,objcopy)
 128
 129 OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
 130 vmlinuz.srec: vmlinuz
 131         $(call cmd,objcopy)
 132
 133 uzImage.bin: vmlinuz.bin FORCE
 134         $(call if_changed,uimage,none)
 135
 136 clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec}