2 # This file is subject to the terms and conditions of the GNU General Public
5 # Adapted for MIPS Pete Popov, Dan Malek
7 # Copyright (C) 1994 by Linus Torvalds
8 # Adapted for PowerPC by Gary Thomas
9 # modified by Cort (cort@cs.nmt.edu)
11 # Copyright (C) 2009 Lemote Inc. & DSLab, Lanzhou University
12 # Author: Wu Zhangjin <wuzhangjin@gmail.com>
15 # set the default size of the mallocing area for decompressing
16 BOOT_HEAP_SIZE := 0x400000
18 # Disable Function Tracer
19 KBUILD_CFLAGS := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//")
21 KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS))
23 KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \
24 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
26 KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
27 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
28 -DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS)
30 targets := head.o decompress.o dbg.o uart-16550.o uart-alchemy.o
32 # decompressor objects (linked with vmlinuz)
33 vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/dbg.o
35 ifdef CONFIG_DEBUG_ZBOOT
36 vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
37 vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o
40 ifdef CONFIG_KERNEL_XZ
41 vmlinuzobjs-y += $(obj)/../../lib/ashldi3.o
44 targets += vmlinux.bin
45 OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
46 $(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
47 $(call if_changed,objcopy)
49 tool_$(CONFIG_KERNEL_GZIP) = gzip
50 tool_$(CONFIG_KERNEL_BZIP2) = bzip2
51 tool_$(CONFIG_KERNEL_LZ4) = lz4
52 tool_$(CONFIG_KERNEL_LZMA) = lzma
53 tool_$(CONFIG_KERNEL_LZO) = lzo
54 tool_$(CONFIG_KERNEL_XZ) = xzkern
56 targets += vmlinux.bin.z
57 $(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
58 $(call if_changed,$(tool_y))
61 OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \
62 --set-section-flags=.image=contents,alloc,load,readonly,data
63 $(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
64 $(call if_changed,objcopy)
66 # Calculate the load address of the compressed kernel image
67 hostprogs-y := calc_vmlinuz_load_addr
69 ifeq ($(CONFIG_MACH_JZ4740),y)
70 VMLINUZ_LOAD_ADDRESS := 0x80600000
72 VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
73 $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS))
76 vmlinuzobjs-y += $(obj)/piggy.o
79 cmd_zld = $(LD) $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
80 quiet_cmd_strip = STRIP $@
81 cmd_strip = $(STRIP) -s $@
82 vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
87 # Some DECstations need all possible sections of an ECOFF executable
89 ifdef CONFIG_MACH_DECSTATION
93 # elf2ecoff can only handle 32bit image
94 hostprogs-y += ../elf2ecoff
102 quiet_cmd_32 = OBJCOPY $@
103 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
107 quiet_cmd_ecoff = ECOFF $@
108 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
109 vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
112 OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
116 OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
117 vmlinuz.srec: vmlinuz
120 clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec}