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 <wuzhangjin@gmail.com> 13# 14 15include $(srctree)/arch/mips/Kbuild.platforms 16 17# set the default size of the mallocing area for decompressing 18BOOT_HEAP_SIZE := 0x400000 19 20# Disable Function Tracer 21KBUILD_CFLAGS := $(filter-out -pg, $(KBUILD_CFLAGS)) 22 23KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS)) 24 25KBUILD_CFLAGS := $(KBUILD_CFLAGS) -D__KERNEL__ \ 26 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" 27 28KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \ 29 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \ 30 -DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS) 31 32# decompressor objects (linked with vmlinuz) 33vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o 34 35ifdef CONFIG_DEBUG_ZBOOT 36vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o 37vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o 38vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o 39vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o 40vmlinuzobjs-$(CONFIG_ATH79) += $(obj)/uart-ath79.o 41endif 42 43extra-y += uart-ath79.c 44$(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c 45 $(call cmd,shipped) 46 47vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o $(obj)/bswapsi.o 48 49extra-y += ashldi3.c 50$(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE 51 $(call if_changed,shipped) 52 53extra-y += bswapsi.c 54$(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE 55 $(call if_changed,shipped) 56 57targets := $(notdir $(vmlinuzobjs-y)) 58 59targets += vmlinux.bin 60OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 61$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE 62 $(call if_changed,objcopy) 63 64tool_$(CONFIG_KERNEL_GZIP) = gzip 65tool_$(CONFIG_KERNEL_BZIP2) = bzip2 66tool_$(CONFIG_KERNEL_LZ4) = lz4 67tool_$(CONFIG_KERNEL_LZMA) = lzma 68tool_$(CONFIG_KERNEL_LZO) = lzo 69tool_$(CONFIG_KERNEL_XZ) = xzkern 70 71targets += vmlinux.bin.z 72$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE 73 $(call if_changed,$(tool_y)) 74 75targets += piggy.o dummy.o 76OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ 77 --set-section-flags=.image=contents,alloc,load,readonly,data 78$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE 79 $(call if_changed,objcopy) 80 81# Calculate the load address of the compressed kernel image 82hostprogs-y := calc_vmlinuz_load_addr 83 84ifneq ($(zload-y),) 85VMLINUZ_LOAD_ADDRESS := $(zload-y) 86else 87VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ 88 $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS)) 89endif 90UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS) 91 92vmlinuzobjs-y += $(obj)/piggy.o 93 94quiet_cmd_zld = LD $@ 95 cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ 96quiet_cmd_strip = STRIP $@ 97 cmd_strip = $(STRIP) -s $@ 98vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr 99 $(call cmd,zld) 100 $(call cmd,strip) 101 102# 103# Some DECstations need all possible sections of an ECOFF executable 104# 105ifdef CONFIG_MACH_DECSTATION 106 e2eflag := -a 107endif 108 109# elf2ecoff can only handle 32bit image 110hostprogs-y += ../elf2ecoff 111 112ifdef CONFIG_32BIT 113 VMLINUZ = vmlinuz 114else 115 VMLINUZ = vmlinuz.32 116endif 117 118quiet_cmd_32 = OBJCOPY $@ 119 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 120vmlinuz.32: vmlinuz 121 $(call cmd,32) 122 123quiet_cmd_ecoff = ECOFF $@ 124 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) 125vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ) 126 $(call cmd,ecoff) 127 128OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 129vmlinuz.bin: vmlinuz 130 $(call cmd,objcopy) 131 132OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 133vmlinuz.srec: vmlinuz 134 $(call cmd,objcopy) 135 136uzImage.bin: vmlinuz.bin FORCE 137 $(call if_changed,uimage,none) 138 139clean-files += $(objtree)/vmlinuz 140clean-files += $(objtree)/vmlinuz.32 141clean-files += $(objtree)/vmlinuz.ecoff 142clean-files += $(objtree)/vmlinuz.bin 143clean-files += $(objtree)/vmlinuz.srec 144