openwrt/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/Makefile

   1 #
   2 # Makefile for Broadcom BCM947XX boards
   3 #
   4 # Copyright 2001-2003, Broadcom Corporation
   5 # All Rights Reserved.
   6 #
   7 # THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
   8 # KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
   9 # SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
  10 # FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
  11 #
  12 # $Id$
  13 #
  14 # Copyright 2004  Manuel Novoa III <mjn3@codepoet.org>
  15 #   Modified to support bzip'd kernels.
  16 #   Of course, it would be better to integrate bunzip capability into CFE.
  17 #
  18
  19 # Link at 3 MB offset in RAM
  20 #TEXT_START     ?= 0x80300000
  21 TEXT_START      ?= 0x80001000
  22 BZ_MEM_TOP      := 0x81000000
  23 BZ_TEXT_START   := BZ_MEM_TOP-0x4000
  24 BZ_STACK_TOP    := BZ_TEXT_START-4
  25
  26 OBJCOPY         := $(CROSS_COMPILE)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S
  27
  28 SRCBASE         := $(TOPDIR)/../..
  29 VPATH           := $(SRCBASE)/shared
  30 ASFLAGS         += -D__ASSEMBLY__ -I$(SRCBASE)/include -DLOADADDR=$(LOADADDR)
  31 ASFLAGS         += -DBZ_MEM_TOP=$(BZ_MEM_TOP)
  32 ASFLAGS         += -DBZ_TEXT_START=$(BZ_TEXT_START)
  33 ASFLAGS         += -DBZ_STACK_TOP=$(BZ_STACK_TOP)
  34 CFLAGS          += -I$(SRCBASE)/include -DLOADADDR=$(LOADADDR)
  35 CFLAGS          += -DBZ_MEM_TOP=$(BZ_MEM_TOP)
  36 CFLAGS          += -DBZ_TEXT_START=$(BZ_TEXT_START)
  37 CFLAGS          += -DBZ_STACK_TOP=$(BZ_STACK_TOP)
  38 ifdef CONFIG_MCOUNT
  39 CFLAGS          := $(subst -pg,,$(CFLAGS))
  40 endif
  41 CFLAGS          += -ffunction-sections $(call check_gcc, -fvtable-gc, )
  42 SEDFLAGS        := s/BZ_TEXT_START/$(BZ_TEXT_START)/;s/BZ_MEM_TOP/$(BZ_MEM_TOP)/;s/TEXT_START/$(TEXT_START)/
  43
  44 SYSTEM          ?= $(TOPDIR)/vmlinux
  45 OBJECTS         := head.o data.o
  46
  47 all: bzImage vmlinuz
  48
  49 # Don't build dependencies, this may die if $(CC) isn't gcc
  50 dep:
  51
  52 # Create a gzipped version named vmlinuz for compatibility
  53 vmlinuz: piggy
  54         gzip -c9 $< > $@
  55
  56 # Our bzImage is a gzip'd binary that decompresses and runs
  57 #   the appended bzip'd kernel.
  58 bzImage: bzLoaderImage.gz piggz
  59         cat bzLoaderImage.gz piggz > $@
  60
  61 bzLoaderImage.gz: bzLoaderImage
  62         gzip -nc9 $< > $@
  63
  64 bzLoaderImage: bzLoader
  65         $(OBJCOPY) $< $@
  66
  67 bzLoader: vmlinux.lds $(OBJECTS)
  68         $(LD) -static --gc-sections -no-warn-mismatch -T vmlinux.lds -o $@ $(OBJECTS)
  69
  70 vmlinux.lds: vmlinux.lds.in Makefile
  71         @sed "$(SEDFLAGS)" < $< > $@
  72
  73 piggz: piggy
  74         bzip2 -c9 $< > $@
  75
  76 piggy: $(SYSTEM)
  77         $(OBJCOPY) $< $@
  78
  79 data.o: data.lds data.image
  80         $(LD) -no-warn-mismatch -T data.lds -r -o $@ -b binary data.image -b elf32-tradlittlemips
  81
  82 data.lds:
  83         @echo "SECTIONS { .data : { code_start = .; *(.data) code_stop = .; }}" > $@
  84
  85 data.image: decompress_bunzip2.image
  86         $(OBJCOPY) $< $@
  87
  88 decompress_bunzip2.image: decompress_bunzip2.lds decompress_bunzip2.o
  89         $(LD) -static --gc-sections -no-warn-mismatch -T decompress_bunzip2.lds -o $@ decompress_bunzip2.o
  90
  91 decompress_bunzip2.lds: decompress_bunzip2.lds.in Makefile
  92         @sed "$(SEDFLAGS)" < $< > $@
  93
  94 mrproper: clean
  95
  96 clean:
  97         rm -f vmlinux vmlinuz piggz piggy *.lds *.o \
  98                 bzLoader bzLoaderImage bzLoaderImage.gz bzImage \
  99                 data.lds data.image \
 100                 decompress_bunzip2.lds decompress_bunzip2.image