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 16VMLINUX_SIZE := $(shell wc -c $(objtree)/$(KBUILD_IMAGE) 2>/dev/null | cut -d' ' -f1) 17VMLINUX_SIZE := $(shell [ -n "$(VMLINUX_SIZE)" ] && echo -n $$(($(VMLINUX_SIZE) + (65536 - $(VMLINUX_SIZE) % 65536)))) 18# VMLINUZ_LOAD_ADDRESS = concat "high32 of VMLINUX_LOAD_ADDRESS" and "(low32 of VMLINUX_LOAD_ADDRESS) + VMLINUX_SIZE" 19HIGH32 := $(shell A=$(VMLINUX_LOAD_ADDRESS); [ $${\#A} -gt 10 ] && expr substr "$(VMLINUX_LOAD_ADDRESS)" 3 $$(($${\#A} - 10))) 20LOW32 := $(shell [ -n "$(HIGH32)" ] && A=11 || A=3; expr substr "$(VMLINUX_LOAD_ADDRESS)" $${A} 8) 21VMLINUZ_LOAD_ADDRESS := 0x$(shell [ -n "$(VMLINUX_SIZE)" -a -n "$(LOW32)" ] && printf "$(HIGH32)%08x" $$(($(VMLINUX_SIZE) + 0x$(LOW32)))) 22 23# set the default size of the mallocing area for decompressing 24BOOT_HEAP_SIZE := 0x400000 25 26# Disable Function Tracer 27KBUILD_CFLAGS := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//") 28 29KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \ 30 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" \ 31 32KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \ 33 -DKERNEL_ENTRY=0x$(shell $(NM) $(objtree)/$(KBUILD_IMAGE) 2>/dev/null | grep " kernel_entry" | cut -f1 -d \ ) \ 34 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) 35 36obj-y := $(obj)/head.o $(obj)/decompress.o $(obj)/dbg.o 37 38obj-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o 39 40OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 41$(obj)/vmlinux.bin: $(KBUILD_IMAGE) 42 $(call if_changed,objcopy) 43 44suffix_$(CONFIG_KERNEL_GZIP) = gz 45suffix_$(CONFIG_KERNEL_BZIP2) = bz2 46suffix_$(CONFIG_KERNEL_LZMA) = lzma 47suffix_$(CONFIG_KERNEL_LZO) = lzo 48tool_$(CONFIG_KERNEL_GZIP) = gzip 49tool_$(CONFIG_KERNEL_BZIP2) = bzip2 50tool_$(CONFIG_KERNEL_LZMA) = lzma 51tool_$(CONFIG_KERNEL_LZO) = lzo 52$(obj)/vmlinux.$(suffix_y): $(obj)/vmlinux.bin 53 $(call if_changed,$(tool_y)) 54 55$(obj)/piggy.o: $(obj)/vmlinux.$(suffix_y) $(obj)/dummy.o 56 $(Q)$(OBJCOPY) $(OBJCOPYFLAGS) \ 57 --add-section=.image=$< \ 58 --set-section-flags=.image=contents,alloc,load,readonly,data \ 59 $(obj)/dummy.o $@ 60 61LDFLAGS_vmlinuz := $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T 62vmlinuz: $(src)/ld.script $(obj-y) $(obj)/piggy.o 63 $(call if_changed,ld) 64 $(Q)$(OBJCOPY) $(OBJCOPYFLAGS) $@ 65 66# 67# Some DECstations need all possible sections of an ECOFF executable 68# 69ifdef CONFIG_MACH_DECSTATION 70 E2EFLAGS = -a 71else 72 E2EFLAGS = 73endif 74 75# elf2ecoff can only handle 32bit image 76 77ifdef CONFIG_32BIT 78 VMLINUZ = vmlinuz 79else 80 VMLINUZ = vmlinuz.32 81endif 82 83vmlinuz.32: vmlinuz 84 $(Q)$(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 85 86vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ) 87 $(Q)$(obj)/../elf2ecoff $(VMLINUZ) vmlinuz.ecoff $(E2EFLAGS) 88 89$(obj)/../elf2ecoff: $(src)/../elf2ecoff.c 90 $(Q)$(HOSTCC) -o $@ $^ 91 92OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 93vmlinuz.bin: vmlinuz 94 $(call if_changed,objcopy) 95 96OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 97vmlinuz.srec: vmlinuz 98 $(call if_changed,objcopy) 99 100clean: 101clean-files += *.o \ 102 vmlinu* 103