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 # compressed kernel load addr: VMLINUZ_LOAD_ADDRESS > VMLINUX_LOAD_ADDRESS + VMLINUX_SIZE
  16 VMLINUX_SIZE := $(shell wc -c $(objtree)/$(KBUILD_IMAGE) 2>/dev/null | cut -d' ' -f1)
  17 VMLINUX_SIZE := $(shell [ -n "$(VMLINUX_SIZE)" ] && echo -n $$(($(VMLINUX_SIZE) + (65536 - $(VMLINUX_SIZE) % 65536))))
  18 # VMLINUZ_LOAD_ADDRESS = concat "high32 of VMLINUX_LOAD_ADDRESS" and "(low32 of VMLINUX_LOAD_ADDRESS) + VMLINUX_SIZE"
  19 HIGH32 := $(shell A=$(VMLINUX_LOAD_ADDRESS); [ $${\#A} -gt 10 ] && expr substr "$(VMLINUX_LOAD_ADDRESS)" 3 $$(($${\#A} - 10)))
  20 LOW32 := $(shell [ -n "$(HIGH32)" ] && A=11 || A=3; expr substr "$(VMLINUX_LOAD_ADDRESS)" $${A} 8)
  21 VMLINUZ_LOAD_ADDRESS := 0x$(shell [ -n "$(VMLINUX_SIZE)" -a -n "$(LOW32)" ] && printf "$(HIGH32)%08x" $$(($(VMLINUX_SIZE) + 0x$(LOW32))))
  22
  23 # set the default size of the mallocing area for decompressing
  24 BOOT_HEAP_SIZE := 0x400000
  25
  26 # Disable Function Tracer
  27 KBUILD_CFLAGS := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//")
  28
  29 KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \
  30         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
  31
  32 KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
  33         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
  34         -DKERNEL_ENTRY=0x$(shell $(NM) $(objtree)/$(KBUILD_IMAGE) 2>/dev/null | grep " kernel_entry" | cut -f1 -d \ )
  35
  36 targets := head.o decompress.o dbg.o uart-16550.o uart-alchemy.o
  37
  38 # decompressor objects (linked with vmlinuz)
  39 vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/dbg.o
  40
  41 ifdef CONFIG_DEBUG_ZBOOT
  42 vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
  43 vmlinuzobjs-$(CONFIG_MACH_ALCHEMY)                 += $(obj)/uart-alchemy.o
  44 endif
  45
  46 targets += vmlinux.bin
  47 OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
  48 $(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
  49         $(call if_changed,objcopy)
  50
  51 suffix_$(CONFIG_KERNEL_GZIP)  = gz
  52 suffix_$(CONFIG_KERNEL_BZIP2) = bz2
  53 suffix_$(CONFIG_KERNEL_LZMA)  = lzma
  54 suffix_$(CONFIG_KERNEL_LZO)   = lzo
  55 tool_$(CONFIG_KERNEL_GZIP)    = gzip
  56 tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
  57 tool_$(CONFIG_KERNEL_LZMA)    = lzma
  58 tool_$(CONFIG_KERNEL_LZO)     = lzo
  59
  60 targets += vmlinux.gz vmlinux.bz2 vmlinux.lzma vmlinux.lzo
  61 $(obj)/vmlinux.$(suffix_y): $(obj)/vmlinux.bin FORCE
  62         $(call if_changed,$(tool_y))
  63
  64 targets += piggy.o
  65 OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.$(suffix_y) \
  66                         --set-section-flags=.image=contents,alloc,load,readonly,data
  67 $(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.$(suffix_y) FORCE
  68         $(call if_changed,objcopy)
  69
  70 LDFLAGS_vmlinuz := $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T
  71 vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/piggy.o
  72         $(call cmd,ld)
  73         $(Q)$(OBJCOPY) $(OBJCOPYFLAGS) $@
  74
  75 #
  76 # Some DECstations need all possible sections of an ECOFF executable
  77 #
  78 ifdef CONFIG_MACH_DECSTATION
  79   e2eflag := -a
  80 endif
  81
  82 # elf2ecoff can only handle 32bit image
  83 hostprogs-y := ../elf2ecoff
  84
  85 ifdef CONFIG_32BIT
  86         VMLINUZ = vmlinuz
  87 else
  88         VMLINUZ = vmlinuz.32
  89 endif
  90
  91 quiet_cmd_32 = OBJCOPY $@
  92       cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
  93 vmlinuz.32: vmlinuz
  94         $(call cmd,32)
  95
  96 quiet_cmd_ecoff = ECOFF   $@
  97       cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
  98 vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
  99         $(call cmd,ecoff)
 100
 101 OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
 102 vmlinuz.bin: vmlinuz
 103         $(call cmd,objcopy)
 104
 105 OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
 106 vmlinuz.srec: vmlinuz
 107         $(call cmd,objcopy)
 108
 109 clean-files := $(objtree)/vmlinuz.*