101 lines
3.2 KiB
Makefile
101 lines
3.2 KiB
Makefile
#
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# This file is subject to the terms and conditions of the GNU General Public
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# License.
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#
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# Adapted for MIPS Pete Popov, Dan Malek
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#
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# Copyright (C) 1994 by Linus Torvalds
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# Adapted for PowerPC by Gary Thomas
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# modified by Cort (cort@cs.nmt.edu)
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#
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# Copyright (C) 2009 Lemote Inc. & DSLab, Lanzhou University
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# Author: Wu Zhangjin <wuzj@lemote.com>
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#
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# compressed kernel load addr: VMLINUZ_LOAD_ADDRESS > VMLINUX_LOAD_ADDRESS + VMLINUX_SIZE
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VMLINUX_SIZE := $(shell wc -c $(objtree)/$(KBUILD_IMAGE) 2>/dev/null | cut -d' ' -f1)
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VMLINUX_SIZE := $(shell [ -n "$(VMLINUX_SIZE)" ] && echo $$(($(VMLINUX_SIZE) + (65536 - $(VMLINUX_SIZE) % 65536))))
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VMLINUZ_LOAD_ADDRESS := 0x$(shell [ -n "$(VMLINUX_SIZE)" ] && printf %x $$(($(VMLINUX_LOAD_ADDRESS) + $(VMLINUX_SIZE))))
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# set the default size of the mallocing area for decompressing
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BOOT_HEAP_SIZE := 0x400000
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# Disable Function Tracer
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KBUILD_CFLAGS := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//")
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KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \
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-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" \
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KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
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-DKERNEL_ENTRY=0x$(shell $(NM) $(objtree)/$(KBUILD_IMAGE) 2>/dev/null | grep " kernel_entry" | cut -f1 -d \ ) \
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-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE)
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obj-y := $(obj)/head.o $(obj)/decompress.o $(obj)/dbg.o
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obj-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
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OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
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$(obj)/vmlinux.bin: $(KBUILD_IMAGE)
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$(call if_changed,objcopy)
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suffix_$(CONFIG_KERNEL_GZIP) = gz
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suffix_$(CONFIG_KERNEL_BZIP2) = bz2
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suffix_$(CONFIG_KERNEL_LZMA) = lzma
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tool_$(CONFIG_KERNEL_GZIP) = gzip
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tool_$(CONFIG_KERNEL_BZIP2) = bzip2
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tool_$(CONFIG_KERNEL_LZMA) = lzma
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$(obj)/vmlinux.$(suffix_y): $(obj)/vmlinux.bin
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$(call if_changed,$(tool_y))
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$(obj)/piggy.o: $(obj)/vmlinux.$(suffix_y) $(obj)/dummy.o
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$(Q)$(OBJCOPY) $(OBJCOPYFLAGS) \
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--add-section=.image=$< \
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--set-section-flags=.image=contents,alloc,load,readonly,data \
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$(obj)/dummy.o $@
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LDFLAGS_vmlinuz := $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T
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vmlinuz: $(src)/ld.script $(obj-y) $(obj)/piggy.o
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$(call if_changed,ld)
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$(Q)$(OBJCOPY) $(OBJCOPYFLAGS) -R .comment -R .stab -R .stabstr -R .initrd -R .sysmap $@
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#
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# Some DECstations need all possible sections of an ECOFF executable
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#
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ifdef CONFIG_MACH_DECSTATION
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E2EFLAGS = -a
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else
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E2EFLAGS =
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endif
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# elf2ecoff can only handle 32bit image
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ifdef CONFIG_32BIT
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VMLINUZ = vmlinuz
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else
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VMLINUZ = vmlinuz.32
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endif
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vmlinuz.32: vmlinuz
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$(Q)$(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
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vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
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$(Q)$(obj)/../elf2ecoff $(VMLINUZ) vmlinuz.ecoff $(E2EFLAGS)
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$(obj)/../elf2ecoff: $(src)/../elf2ecoff.c
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$(Q)$(HOSTCC) -o $@ $^
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drop-sections = .reginfo .mdebug .comment .note .pdr .options .MIPS.options
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strip-flags = $(addprefix --remove-section=,$(drop-sections))
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OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary $(strip-flags)
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vmlinuz.bin: vmlinuz
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$(call if_changed,objcopy)
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OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec $(strip-flags)
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vmlinuz.srec: vmlinuz
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$(call if_changed,objcopy)
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clean:
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clean-files += *.o \
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vmlinu*
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