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 <wuzj@lemote.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) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
  33         -DKERNEL_ENTRY=0x$(shell $(NM) $(objtree)/$(KBUILD_IMAGE) 2>/dev/null | grep " kernel_entry" | cut -f1 -d \ ) \
  34         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE)
  35
  36 obj-y := $(obj)/head.o $(obj)/decompress.o $(obj)/dbg.o
  37
  38 obj-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
  39
  40 OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
  41 $(obj)/vmlinux.bin: $(KBUILD_IMAGE)
  42         $(call if_changed,objcopy)
  43
  44 suffix_$(CONFIG_KERNEL_GZIP)  = gz
  45 suffix_$(CONFIG_KERNEL_BZIP2) = bz2
  46 suffix_$(CONFIG_KERNEL_LZMA)  = lzma
  47 suffix_$(CONFIG_KERNEL_LZO)   = lzo
  48 tool_$(CONFIG_KERNEL_GZIP)    = gzip
  49 tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
  50 tool_$(CONFIG_KERNEL_LZMA)    = lzma
  51 tool_$(CONFIG_KERNEL_LZO)     = lzo
  52 $(obj)/vmlinux.$(suffix_y): $(obj)/vmlinux.bin
  53         $(call if_changed,$(tool_y))
  54
  55 $(obj)/piggy.o: $(obj)/vmlinux.$(suffix_y) $(obj)/dummy.o
  56         $(Q)$(OBJCOPY) $(OBJCOPYFLAGS) \
  57                 --add-section=.image=$< \
  58                 --set-section-flags=.image=contents,alloc,load,readonly,data \
  59                 $(obj)/dummy.o $@
  60
  61 LDFLAGS_vmlinuz := $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T
  62 vmlinuz: $(src)/ld.script $(obj-y) $(obj)/piggy.o
  63         $(call if_changed,ld)
  64         $(Q)$(OBJCOPY) $(OBJCOPYFLAGS) $@
  65
  66 #
  67 # Some DECstations need all possible sections of an ECOFF executable
  68 #
  69 ifdef CONFIG_MACH_DECSTATION
  70   E2EFLAGS = -a
  71 else
  72   E2EFLAGS =
  73 endif
  74
  75 # elf2ecoff can only handle 32bit image
  76
  77 ifdef CONFIG_32BIT
  78         VMLINUZ = vmlinuz
  79 else
  80         VMLINUZ = vmlinuz.32
  81 endif
  82
  83 vmlinuz.32: vmlinuz
  84         $(Q)$(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
  85
  86 vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
  87         $(Q)$(obj)/../elf2ecoff $(VMLINUZ) vmlinuz.ecoff $(E2EFLAGS)
  88
  89 $(obj)/../elf2ecoff: $(src)/../elf2ecoff.c
  90         $(Q)$(HOSTCC) -o $@ $^
  91
  92 OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
  93 vmlinuz.bin: vmlinuz
  94         $(call if_changed,objcopy)
  95
  96 OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
  97 vmlinuz.srec: vmlinuz
  98         $(call if_changed,objcopy)
  99
 100 clean:
 101 clean-files += *.o \
 102                vmlinu*