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 := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//") 22 23KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS)) 24 25KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \ 26 -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" 27 28KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \ 29 -DBOOT_HEAP_SIZE=$(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 $(obj)/bswapsi.o 48 49extra-y += ashldi3.c bswapsi.c 50$(obj)/ashldi3.o $(obj)/bswapsi.o: KBUILD_CFLAGS += -I$(srctree)/arch/mips/lib 51$(obj)/ashldi3.c $(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c 52 $(call cmd,shipped) 53 54targets := $(notdir $(vmlinuzobjs-y)) 55 56targets += vmlinux.bin 57OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 58$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE 59 $(call if_changed,objcopy) 60 61tool_$(CONFIG_KERNEL_GZIP) = gzip 62tool_$(CONFIG_KERNEL_BZIP2) = bzip2 63tool_$(CONFIG_KERNEL_LZ4) = lz4 64tool_$(CONFIG_KERNEL_LZMA) = lzma 65tool_$(CONFIG_KERNEL_LZO) = lzo 66tool_$(CONFIG_KERNEL_XZ) = xzkern 67 68targets += vmlinux.bin.z 69$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE 70 $(call if_changed,$(tool_y)) 71 72targets += piggy.o dummy.o 73OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ 74 --set-section-flags=.image=contents,alloc,load,readonly,data 75$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE 76 $(call if_changed,objcopy) 77 78# Calculate the load address of the compressed kernel image 79hostprogs-y := calc_vmlinuz_load_addr 80 81ifneq ($(zload-y),) 82VMLINUZ_LOAD_ADDRESS := $(zload-y) 83else 84VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ 85 $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS)) 86endif 87 88vmlinuzobjs-y += $(obj)/piggy.o 89 90quiet_cmd_zld = LD $@ 91 cmd_zld = $(LD) $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ 92quiet_cmd_strip = STRIP $@ 93 cmd_strip = $(STRIP) -s $@ 94vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr 95 $(call cmd,zld) 96 $(call cmd,strip) 97 98# 99# Some DECstations need all possible sections of an ECOFF executable 100# 101ifdef CONFIG_MACH_DECSTATION 102 e2eflag := -a 103endif 104 105# elf2ecoff can only handle 32bit image 106hostprogs-y += ../elf2ecoff 107 108ifdef CONFIG_32BIT 109 VMLINUZ = vmlinuz 110else 111 VMLINUZ = vmlinuz.32 112endif 113 114quiet_cmd_32 = OBJCOPY $@ 115 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 116vmlinuz.32: vmlinuz 117 $(call cmd,32) 118 119quiet_cmd_ecoff = ECOFF $@ 120 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) 121vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ) 122 $(call cmd,ecoff) 123 124OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 125vmlinuz.bin: vmlinuz 126 $(call cmd,objcopy) 127 128OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 129vmlinuz.srec: vmlinuz 130 $(call cmd,objcopy) 131 132clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec} 133