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) += $(obj)/uart-alchemy.o 40endif 41 42vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o 43 44$(obj)/ashldi3.o: KBUILD_CFLAGS += -I$(srctree)/arch/mips/lib 45$(obj)/ashldi3.c: $(srctree)/arch/mips/lib/ashldi3.c 46 $(call cmd,shipped) 47 48targets := $(notdir $(vmlinuzobjs-y)) 49 50targets += vmlinux.bin 51OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S 52$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE 53 $(call if_changed,objcopy) 54 55tool_$(CONFIG_KERNEL_GZIP) = gzip 56tool_$(CONFIG_KERNEL_BZIP2) = bzip2 57tool_$(CONFIG_KERNEL_LZ4) = lz4 58tool_$(CONFIG_KERNEL_LZMA) = lzma 59tool_$(CONFIG_KERNEL_LZO) = lzo 60tool_$(CONFIG_KERNEL_XZ) = xzkern 61 62targets += vmlinux.bin.z 63$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE 64 $(call if_changed,$(tool_y)) 65 66targets += piggy.o dummy.o 67OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ 68 --set-section-flags=.image=contents,alloc,load,readonly,data 69$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE 70 $(call if_changed,objcopy) 71 72# Calculate the load address of the compressed kernel image 73hostprogs-y := calc_vmlinuz_load_addr 74 75ifneq ($(zload-y),) 76VMLINUZ_LOAD_ADDRESS := $(zload-y) 77else 78VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ 79 $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS)) 80endif 81 82vmlinuzobjs-y += $(obj)/piggy.o 83 84quiet_cmd_zld = LD $@ 85 cmd_zld = $(LD) $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ 86quiet_cmd_strip = STRIP $@ 87 cmd_strip = $(STRIP) -s $@ 88vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr 89 $(call cmd,zld) 90 $(call cmd,strip) 91 92# 93# Some DECstations need all possible sections of an ECOFF executable 94# 95ifdef CONFIG_MACH_DECSTATION 96 e2eflag := -a 97endif 98 99# elf2ecoff can only handle 32bit image 100hostprogs-y += ../elf2ecoff 101 102ifdef CONFIG_32BIT 103 VMLINUZ = vmlinuz 104else 105 VMLINUZ = vmlinuz.32 106endif 107 108quiet_cmd_32 = OBJCOPY $@ 109 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 110vmlinuz.32: vmlinuz 111 $(call cmd,32) 112 113quiet_cmd_ecoff = ECOFF $@ 114 cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) 115vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ) 116 $(call cmd,ecoff) 117 118OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary 119vmlinuz.bin: vmlinuz 120 $(call cmd,objcopy) 121 122OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec 123vmlinuz.srec: vmlinuz 124 $(call cmd,objcopy) 125 126clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec} 127