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 <wuzj@lemote.com>
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))))
20 # set the default size of the mallocing area for decompressing
21 BOOT_HEAP_SIZE := 0x400000
23 # Disable Function Tracer
24 KBUILD_CFLAGS := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//")
26 KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \
27 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" \
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)
33 obj-y := $(obj)/head.o $(obj)/decompress.o $(obj)/dbg.o
35 obj-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
37 OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
38 $(obj)/vmlinux.bin: $(KBUILD_IMAGE)
39 $(call if_changed,objcopy)
41 suffix_$(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))
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 \
56 LDFLAGS_vmlinuz := $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T
57 vmlinuz: $(src)/ld.script $(obj-y) $(obj)/piggy.o
59 $(Q)$(OBJCOPY) $(OBJCOPYFLAGS) $@
62 # Some DECstations need all possible sections of an ECOFF executable
64 ifdef CONFIG_MACH_DECSTATION
70 # elf2ecoff can only handle 32bit image
79 $(Q)$(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
81 vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
82 $(Q)$(obj)/../elf2ecoff $(VMLINUZ) vmlinuz.ecoff $(E2EFLAGS)
84 $(obj)/../elf2ecoff: $(src)/../elf2ecoff.c
85 $(Q)$(HOSTCC) -o $@ $^
87 OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
89 $(call if_changed,objcopy)
91 OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
93 $(call if_changed,objcopy)