/arch/mips/boot/compressed/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 -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# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
 33KCOV_INSTRUMENT		:= n
 34
 35# decompressor objects (linked with vmlinuz)
 36vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o
 37
 38ifdef CONFIG_DEBUG_ZBOOT
 39vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT)		   += $(obj)/dbg.o
 40vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
 41vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o
 42vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY)		   += $(obj)/uart-alchemy.o
 43vmlinuzobjs-$(CONFIG_ATH79)			   += $(obj)/uart-ath79.o
 44endif
 45
 46extra-y += uart-ath79.c
 47$(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c
 48	$(call cmd,shipped)
 49
 50vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o $(obj)/bswapsi.o
 51
 52extra-y += ashldi3.c
 53$(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE
 54	$(call if_changed,shipped)
 55
 56extra-y += bswapsi.c
 57$(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE
 58	$(call if_changed,shipped)
 59
 60targets := $(notdir $(vmlinuzobjs-y))
 61
 62targets += vmlinux.bin
 63OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
 64$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
 65	$(call if_changed,objcopy)
 66
 67tool_$(CONFIG_KERNEL_GZIP)    = gzip
 68tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
 69tool_$(CONFIG_KERNEL_LZ4)     = lz4
 70tool_$(CONFIG_KERNEL_LZMA)    = lzma
 71tool_$(CONFIG_KERNEL_LZO)     = lzo
 72tool_$(CONFIG_KERNEL_XZ)      = xzkern
 73
 74targets += vmlinux.bin.z
 75$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
 76	$(call if_changed,$(tool_y))
 77
 78targets += piggy.o dummy.o
 79OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \
 80			--set-section-flags=.image=contents,alloc,load,readonly,data
 81$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
 82	$(call if_changed,objcopy)
 83
 84HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE)
 85
 86# Calculate the load address of the compressed kernel image
 87hostprogs := calc_vmlinuz_load_addr
 88
 89ifneq ($(zload-y),)
 90VMLINUZ_LOAD_ADDRESS := $(zload-y)
 91else
 92VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
 93		$(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS))
 94endif
 95UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS)
 96
 97vmlinuzobjs-y += $(obj)/piggy.o
 98
 99quiet_cmd_zld = LD      $@
100      cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
101quiet_cmd_strip = STRIP	  $@
102      cmd_strip = $(STRIP) -s $@
103vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
104	$(call cmd,zld)
105	$(call cmd,strip)
106
107#
108# Some DECstations need all possible sections of an ECOFF executable
109#
110ifdef CONFIG_MACH_DECSTATION
111  e2eflag := -a
112endif
113
114# elf2ecoff can only handle 32bit image
115hostprogs += ../elf2ecoff
116
117ifdef CONFIG_32BIT
118	VMLINUZ = vmlinuz
119else
120	VMLINUZ = vmlinuz.32
121endif
122
123quiet_cmd_32 = OBJCOPY $@
124      cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
125vmlinuz.32: vmlinuz
126	$(call cmd,32)
127
128quiet_cmd_ecoff = ECOFF	  $@
129      cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
130vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
131	$(call cmd,ecoff)
132
133OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
134vmlinuz.bin: vmlinuz
135	$(call cmd,objcopy)
136
137OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
138vmlinuz.srec: vmlinuz
139	$(call cmd,objcopy)
140
141uzImage.bin: vmlinuz.bin FORCE
142	$(call if_changed,uimage,none)
143
144clean-files += $(objtree)/vmlinuz
145clean-files += $(objtree)/vmlinuz.32
146clean-files += $(objtree)/vmlinuz.ecoff
147clean-files += $(objtree)/vmlinuz.bin
148clean-files += $(objtree)/vmlinuz.srec