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
  50 $(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE
  51         $(call if_changed,shipped)
  52
  53 extra-y += bswapsi.c
  54 $(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE
  55         $(call if_changed,shipped)
  56
  57 targets := $(notdir $(vmlinuzobjs-y))
  58
  59 targets += vmlinux.bin
  60 OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
  61 $(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
  62         $(call if_changed,objcopy)
  63
  64 tool_$(CONFIG_KERNEL_GZIP)    = gzip
  65 tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
  66 tool_$(CONFIG_KERNEL_LZ4)     = lz4
  67 tool_$(CONFIG_KERNEL_LZMA)    = lzma
  68 tool_$(CONFIG_KERNEL_LZO)     = lzo
  69 tool_$(CONFIG_KERNEL_XZ)      = xzkern
  70
  71 targets += vmlinux.bin.z
  72 $(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
  73         $(call if_changed,$(tool_y))
  74
  75 targets += piggy.o dummy.o
  76 OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \
  77                         --set-section-flags=.image=contents,alloc,load,readonly,data
  78 $(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
  79         $(call if_changed,objcopy)
  80
  81 # Calculate the load address of the compressed kernel image
  82 hostprogs-y := calc_vmlinuz_load_addr
  83
  84 ifneq ($(zload-y),)
  85 VMLINUZ_LOAD_ADDRESS := $(zload-y)
  86 else
  87 VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
  88                 $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS))
  89 endif
  90 UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS)
  91
  92 vmlinuzobjs-y += $(obj)/piggy.o
  93
  94 quiet_cmd_zld = LD      $@
  95       cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
  96 quiet_cmd_strip = STRIP   $@
  97       cmd_strip = $(STRIP) -s $@
  98 vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
  99         $(call cmd,zld)
 100         $(call cmd,strip)
 101
 102 #
 103 # Some DECstations need all possible sections of an ECOFF executable
 104 #
 105 ifdef CONFIG_MACH_DECSTATION
 106   e2eflag := -a
 107 endif
 108
 109 # elf2ecoff can only handle 32bit image
 110 hostprogs-y += ../elf2ecoff
 111
 112 ifdef CONFIG_32BIT
 113         VMLINUZ = vmlinuz
 114 else
 115         VMLINUZ = vmlinuz.32
 116 endif
 117
 118 quiet_cmd_32 = OBJCOPY $@
 119       cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
 120 vmlinuz.32: vmlinuz
 121         $(call cmd,32)
 122
 123 quiet_cmd_ecoff = ECOFF   $@
 124       cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
 125 vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
 126         $(call cmd,ecoff)
 127
 128 OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
 129 vmlinuz.bin: vmlinuz
 130         $(call cmd,objcopy)
 131
 132 OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
 133 vmlinuz.srec: vmlinuz
 134         $(call cmd,objcopy)
 135
 136 uzImage.bin: vmlinuz.bin FORCE
 137         $(call if_changed,uimage,none)
 138
 139 clean-files += $(objtree)/vmlinuz
 140 clean-files += $(objtree)/vmlinuz.32
 141 clean-files += $(objtree)/vmlinuz.ecoff
 142 clean-files += $(objtree)/vmlinuz.bin
 143 clean-files += $(objtree)/vmlinuz.srec