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 $$(($(VMLINUX_SIZE) + (65536 - $(VMLINUX_SIZE) % 65536)))) 18VMLINUZ_LOAD_ADDRESS := 0x$(shell [ -n "$(VMLINUX_SIZE)" ] && printf %x $$(($(VMLINUX_LOAD_ADDRESS) + $(VMLINUX_SIZE)))) 19 20# set the default size of the mallocing area for decompressing 21BOOT_HEAP_SIZE := 0x400000 22 23# Disable Function Tracer 24KBUILD_CFLAGS := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//") 25 26KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \ 27 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" \ 28 29KBUILD_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) 32 33obj-y := $(obj)/head.o $(obj)/decompress.o $(obj)/dbg.o 34 35obj-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o 36 37OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 38$(obj)/vmlinux.bin: $(KBUILD_IMAGE) 39 $(call if_changed,objcopy) 40 41suffix_$(CONFIG_KERNEL_GZIP) = gz 42suffix_$(CONFIG_KERNEL_BZIP2) = bz2 43suffix_$(CONFIG_KERNEL_LZMA) = lzma 44tool_$(CONFIG_KERNEL_GZIP) = gzip 45tool_$(CONFIG_KERNEL_BZIP2) = bzip2 46tool_$(CONFIG_KERNEL_LZMA) = lzma 47$(obj)/vmlinux.$(suffix_y): $(obj)/vmlinux.bin 48 $(call if_changed,$(tool_y)) 49 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 \ 54 $(obj)/dummy.o $@ 55 56LDFLAGS_vmlinuz := $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T 57vmlinuz: $(src)/ld.script $(obj-y) $(obj)/piggy.o 58 $(call if_changed,ld) 59 $(Q)$(OBJCOPY) $(OBJCOPYFLAGS) -R .comment -R .stab -R .stabstr -R .initrd -R .sysmap $@ 60 61# 62# Some DECstations need all possible sections of an ECOFF executable 63# 64ifdef CONFIG_MACH_DECSTATION 65 E2EFLAGS = -a 66else 67 E2EFLAGS = 68endif 69 70# elf2ecoff can only handle 32bit image 71 72ifdef CONFIG_32BIT 73 VMLINUZ = vmlinuz 74else 75 VMLINUZ = vmlinuz.32 76endif 77 78vmlinuz.32: vmlinuz 79 $(Q)$(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 80 81vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ) 82 $(Q)$(obj)/../elf2ecoff $(VMLINUZ) vmlinuz.ecoff $(E2EFLAGS) 83 84$(obj)/../elf2ecoff: $(src)/../elf2ecoff.c 85 $(Q)$(HOSTCC) -o $@ $^ 86 87drop-sections = .reginfo .mdebug .comment .note .pdr .options .MIPS.options 88strip-flags = $(addprefix --remove-section=,$(drop-sections)) 89 90OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary $(strip-flags) 91vmlinuz.bin: vmlinuz 92 $(call if_changed,objcopy) 93 94OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec $(strip-flags) 95vmlinuz.srec: vmlinuz 96 $(call if_changed,objcopy) 97 98clean: 99clean-files += *.o \ 100 vmlinu* 101