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   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 $$(($(VMLINUX_SIZE) + (65536 - $(VMLINUX_SIZE) % 65536))))
  18 VMLINUZ_LOAD_ADDRESS := 0x$(shell [ -n "$(VMLINUX_SIZE)" ] && printf %x $$(($(VMLINUX_LOAD_ADDRESS) + $(VMLINUX_SIZE))))
  19
  20 # set the default size of the mallocing area for decompressing
  21 BOOT_HEAP_SIZE := 0x400000
  22
  23 # Disable Function Tracer
  24 KBUILD_CFLAGS := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//")
  25
  26 KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \
  27         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" \
  28
  29 KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
  30         -DKERNEL_ENTRY=0x$(shell $(NM) $(objtree)/$(KBUILD_IMAGE) 2>/dev/null | grep " kernel_entry" | cut -f1 -d \ ) \
  31         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE)
  32
  33 obj-y := $(obj)/head.o $(obj)/decompress.o $(obj)/dbg.o
  34
  35 obj-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
  36
  37 OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
  38 $(obj)/vmlinux.bin: $(KBUILD_IMAGE)
  39         $(call if_changed,objcopy)
  40
  41 suffix_$(CONFIG_KERNEL_GZIP)  = gz
  42 suffix_$(CONFIG_KERNEL_BZIP2) = bz2
  43 suffix_$(CONFIG_KERNEL_LZMA)  = lzma
  44 tool_$(CONFIG_KERNEL_GZIP)    = gzip
  45 tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
  46 tool_$(CONFIG_KERNEL_LZMA)    = lzma
  47 $(obj)/vmlinux.$(suffix_y): $(obj)/vmlinux.bin
  48         $(call if_changed,$(tool_y))
  49
  50 $(obj)/piggy.o: $(obj)/vmlinux.$(suffix_y) $(obj)/dummy.o
  51         $(Q)$(OBJCOPY) $(OBJCOPYFLAGS) \
  52                 --add-section=.image=$< \
  53                 --set-section-flags=.image=contents,alloc,load,readonly,data \
  54                 $(obj)/dummy.o $@
  55
  56 LDFLAGS_vmlinuz := $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T
  57 vmlinuz: $(src)/ld.script $(obj-y) $(obj)/piggy.o
  58         $(call if_changed,ld)
  59         $(Q)$(OBJCOPY) $(OBJCOPYFLAGS) -R .comment -R .stab -R .stabstr -R .initrd -R .sysmap $@
  60
  61 #
  62 # Some DECstations need all possible sections of an ECOFF executable
  63 #
  64 ifdef CONFIG_MACH_DECSTATION
  65   E2EFLAGS = -a
  66 else
  67   E2EFLAGS =
  68 endif
  69
  70 # elf2ecoff can only handle 32bit image
  71
  72 ifdef CONFIG_32BIT
  73         VMLINUZ = vmlinuz
  74 else
  75         VMLINUZ = vmlinuz.32
  76 endif
  77
  78 vmlinuz.32: vmlinuz
  79         $(Q)$(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
  80
  81 vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
  82         $(Q)$(obj)/../elf2ecoff $(VMLINUZ) vmlinuz.ecoff $(E2EFLAGS)
  83
  84 $(obj)/../elf2ecoff: $(src)/../elf2ecoff.c
  85         $(Q)$(HOSTCC) -o $@ $^
  86
  87 drop-sections   = .reginfo .mdebug .comment .note .pdr .options .MIPS.options
  88 strip-flags     = $(addprefix --remove-section=,$(drop-sections))
  89
  90 OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary $(strip-flags)
  91 vmlinuz.bin: vmlinuz
  92         $(call if_changed,objcopy)
  93
  94 OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec $(strip-flags)
  95 vmlinuz.srec: vmlinuz
  96         $(call if_changed,objcopy)
  97
  98 clean:
  99 clean-files += *.o \
 100                vmlinu*