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 := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//")
  22
  23 KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS))
  24
  25 KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \
  26         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
  27
  28 KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
  29         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
  30         -DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS)
  31
  32 # Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
  33 KCOV_INSTRUMENT         := n
  34
  35 # decompressor objects (linked with vmlinuz)
  36 vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/bswapsi.o
  37
  38 ifdef CONFIG_DEBUG_ZBOOT
  39 vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT)                  += $(obj)/dbg.o
  40 vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
  41 vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o
  42 vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY)                 += $(obj)/uart-alchemy.o
  43 vmlinuzobjs-$(CONFIG_ATH79)                        += $(obj)/uart-ath79.o
  44 endif
  45
  46 extra-y += uart-ath79.c
  47 $(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c
  48         $(call cmd,shipped)
  49
  50 vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o
  51
  52 extra-y += ashldi3.c bswapsi.c
  53 $(obj)/ashldi3.o $(obj)/bswapsi.o: KBUILD_CFLAGS += -I$(srctree)/arch/mips/lib
  54 $(obj)/ashldi3.c $(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c
  55         $(call cmd,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 HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE)
  82
  83 # Calculate the load address of the compressed kernel image
  84 hostprogs-y := calc_vmlinuz_load_addr
  85
  86 ifneq ($(zload-y),)
  87 VMLINUZ_LOAD_ADDRESS := $(zload-y)
  88 else
  89 VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
  90                 $(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS))
  91 endif
  92
  93 vmlinuzobjs-y += $(obj)/piggy.o
  94
  95 quiet_cmd_zld = LD      $@
  96       cmd_zld = $(LD) $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
  97 quiet_cmd_strip = STRIP   $@
  98       cmd_strip = $(STRIP) -s $@
  99 vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
 100         $(call cmd,zld)
 101         $(call cmd,strip)
 102
 103 #
 104 # Some DECstations need all possible sections of an ECOFF executable
 105 #
 106 ifdef CONFIG_MACH_DECSTATION
 107   e2eflag := -a
 108 endif
 109
 110 # elf2ecoff can only handle 32bit image
 111 hostprogs-y += ../elf2ecoff
 112
 113 ifdef CONFIG_32BIT
 114         VMLINUZ = vmlinuz
 115 else
 116         VMLINUZ = vmlinuz.32
 117 endif
 118
 119 quiet_cmd_32 = OBJCOPY $@
 120       cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
 121 vmlinuz.32: vmlinuz
 122         $(call cmd,32)
 123
 124 quiet_cmd_ecoff = ECOFF   $@
 125       cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
 126 vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
 127         $(call cmd,ecoff)
 128
 129 OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
 130 vmlinuz.bin: vmlinuz
 131         $(call cmd,objcopy)
 132
 133 OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
 134 vmlinuz.srec: vmlinuz
 135         $(call cmd,objcopy)
 136
 137 clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec}