Makefile

  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 $(CC_FLAGS_FTRACE), $(KBUILD_CFLAGS))
 22
 23KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS))
 24
 25# Disable lq/sq in zboot
 26ifdef CONFIG_CPU_LOONGSON64
 27KBUILD_CFLAGS := $(filter-out -march=loongson3a, $(KBUILD_CFLAGS)) -march=mips64r2
 28endif
 29
 30KBUILD_CFLAGS := $(KBUILD_CFLAGS) -D__KERNEL__ -D__DISABLE_EXPORTS \
 31	-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
 32
 33KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
 34	-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
 35	-DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS)
 36
 37# decompressor objects (linked with vmlinuz)
 38vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/bswapsi.o
 39
 40ifdef CONFIG_DEBUG_ZBOOT
 41vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT)		   += $(obj)/dbg.o
 42vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
 43vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o
 44vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY)		   += $(obj)/uart-alchemy.o
 45vmlinuzobjs-$(CONFIG_ATH79)			   += $(obj)/uart-ath79.o
 46endif
 47
 48vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o
 49
 50vmlinuzobjs-$(CONFIG_KERNEL_ZSTD) += $(obj)/bswapdi.o $(obj)/ashldi3.o $(obj)/clz_ctz.o
 51
 52targets := $(notdir $(vmlinuzobjs-y))
 53
 54targets += vmlinux.bin
 55
 56OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
 57
 58$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
 59	$(call if_changed,objcopy)
 60
 61tool_$(CONFIG_KERNEL_GZIP)    = gzip
 62tool_$(CONFIG_KERNEL_BZIP2)   = bzip2_with_size
 63tool_$(CONFIG_KERNEL_LZ4)     = lz4_with_size
 64tool_$(CONFIG_KERNEL_LZMA)    = lzma_with_size
 65tool_$(CONFIG_KERNEL_LZO)     = lzo_with_size
 66tool_$(CONFIG_KERNEL_XZ)      = xzkern_with_size
 67tool_$(CONFIG_KERNEL_ZSTD)    = zstd22_with_size
 68
 69targets += vmlinux.bin.z
 70
 71$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
 72	$(call if_changed,$(tool_y))
 73
 74targets += piggy.o dummy.o
 75
 76OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \
 77			--set-section-flags=.image=contents,alloc,load,readonly,data
 78
 79$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
 80	$(call if_changed,objcopy)
 81
 82HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE)
 83
 84# Calculate the load address of the compressed kernel image
 85hostprogs := calc_vmlinuz_load_addr
 86
 87ifneq (0x0,$(CONFIG_ZBOOT_LOAD_ADDRESS))
 88zload-y	= $(CONFIG_ZBOOT_LOAD_ADDRESS)
 89endif
 90
 91ifneq ($(zload-y),)
 92VMLINUZ_LOAD_ADDRESS := $(zload-y)
 93else
 94VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
 95		$(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS))
 96endif
 97UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS)
 98
 99vmlinuzobjs-y += $(obj)/piggy.o
100
101targets += ../../../../vmlinuz
102
103quiet_cmd_zld = LD      $@
104      cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
105quiet_cmd_strip = STRIP   $@
106      cmd_strip = $(STRIP) -s $@
107
108$(objtree)/vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
109	$(call cmd,zld)
110	$(call cmd,strip)
111
112objboot := $(objtree)/arch/mips/boot
113
114$(objboot)/vmlinuz: $(objtree)/vmlinuz FORCE
115
116#
117# Some DECstations need all possible sections of an ECOFF executable
118#
119ifdef CONFIG_MACH_DECSTATION
120  e2eflag := -a
121endif
122
123# elf2ecoff can only handle 32bit image
124hostprogs += ../elf2ecoff
125
126ifdef CONFIG_32BIT
127	VMLINUZ = $(objtree)/vmlinuz
128else
129	VMLINUZ = $(objboot)/vmlinuz.32
130endif
131
132targets += ../vmlinuz.32
133
134quiet_cmd_32 = OBJCOPY $@
135      cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
136
137$(objboot)/vmlinuz.32: $(objtree)/vmlinuz
138	$(call cmd,32)
139
140targets += ../vmlinuz.ecoff
141
142quiet_cmd_ecoff = ECOFF	  $@
143      cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
144
145$(objboot)/vmlinuz.ecoff: $(objboot)/elf2ecoff $(VMLINUZ)
146	$(call cmd,ecoff)
147
148targets += ../vmlinuz.bin
149
150OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
151
152$(objboot)/vmlinuz.bin: $(objtree)/vmlinuz
153	$(call cmd,objcopy)
154
155targets += ../vmlinuz.srec
156
157OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
158
159$(objboot)/vmlinuz.srec: $(objtree)/vmlinuz
160	$(call cmd,objcopy)
161
162targets += ../uzImage.bin
163
164$(objboot)/uzImage.bin: $(objboot)/vmlinuz.bin FORCE
165	$(call if_changed,uimage,none)
166
167#
168# Flattened Image Tree (.itb) image
169#
170
171ifeq ($(ADDR_BITS),32)
172itb_addr_cells = 1
173endif
174ifeq ($(ADDR_BITS),64)
175itb_addr_cells = 2
176endif
177
178targets += ../vmlinuz.its.S
179
180quiet_cmd_its_cat = CAT     $@
181      cmd_its_cat = cat $(real-prereqs) >$@
182
183$(objboot)/vmlinuz.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS)) FORCE
184	$(call if_changed,its_cat)
185
186targets += ../vmlinuz.its
187
188quiet_cmd_cpp_its_S = ITS     $@
189      cmd_cpp_its_S = $(CPP) -P -C -o $@ $< \
190		        -DKERNEL_NAME="\"Linux $(KERNELRELEASE)\"" \
191			-DVMLINUX_BINARY="\"$(2)\"" \
192			-DVMLINUX_COMPRESSION="\"none\"" \
193			-DVMLINUX_LOAD_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \
194			-DVMLINUX_ENTRY_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \
195			-DADDR_BITS=$(ADDR_BITS) \
196			-DADDR_CELLS=$(itb_addr_cells)
197
198$(objboot)/vmlinuz.its: $(objboot)/vmlinuz.its.S FORCE
199	$(call if_changed,cpp_its_S,vmlinuz.bin)
200
201targets += ../vmlinuz.itb
202
203quiet_cmd_itb-image = ITB     $@
204      cmd_itb-image = \
205		env PATH="$(objtree)/scripts/dtc:$(PATH)" \
206		$(BASH) $(MKIMAGE) \
207		-D "-I dts -O dtb -p 500 \
208			--include $(objtree)/arch/mips \
209			--warning no-unit_address_vs_reg" \
210		-f $(2) $@
211
212$(objboot)/vmlinuz.itb: $(objboot)/vmlinuz.its $(objboot)/vmlinuz.bin FORCE
213	$(call if_changed,itb-image,$<)