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#
# This file is subject to the terms and conditions of the GNU General Public
# License.
#
# Adapted for MIPS Pete Popov, Dan Malek
#
# Copyright (C) 1994 by Linus Torvalds
# Adapted for PowerPC by Gary Thomas
# modified by Cort (cort@cs.nmt.edu)
#
# Copyright (C) 2009 Lemote Inc. & DSLab, Lanzhou University
# Author: Wu Zhangjin <wuzhangjin@gmail.com>
#
include $(srctree)/arch/mips/Kbuild.platforms
# set the default size of the mallocing area for decompressing
BOOT_HEAP_SIZE := 0x400000
# Disable Function Tracer
KBUILD_CFLAGS := $(filter-out -pg, $(KBUILD_CFLAGS))
KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS))
KBUILD_CFLAGS := $(KBUILD_CFLAGS) -D__KERNEL__ \
-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
-DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS)
# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
KCOV_INSTRUMENT := n
# decompressor objects (linked with vmlinuz)
vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/bswapsi.o
ifdef CONFIG_DEBUG_ZBOOT
vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o
vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o
vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o
vmlinuzobjs-$(CONFIG_ATH79) += $(obj)/uart-ath79.o
endif
extra-y += uart-ath79.c
$(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c
$(call cmd,shipped)
vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o
extra-y += ashldi3.c
$(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE
$(call if_changed,shipped)
extra-y += bswapsi.c
$(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE
$(call if_changed,shipped)
targets := $(notdir $(vmlinuzobjs-y))
targets += vmlinux.bin
OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
$(call if_changed,objcopy)
tool_$(CONFIG_KERNEL_GZIP) = gzip
tool_$(CONFIG_KERNEL_BZIP2) = bzip2
tool_$(CONFIG_KERNEL_LZ4) = lz4
tool_$(CONFIG_KERNEL_LZMA) = lzma
tool_$(CONFIG_KERNEL_LZO) = lzo
tool_$(CONFIG_KERNEL_XZ) = xzkern
targets += vmlinux.bin.z
$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
$(call if_changed,$(tool_y))
targets += piggy.o dummy.o
OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \
--set-section-flags=.image=contents,alloc,load,readonly,data
$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
$(call if_changed,objcopy)
HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE)
# Calculate the load address of the compressed kernel image
hostprogs-y := calc_vmlinuz_load_addr
ifneq ($(zload-y),)
VMLINUZ_LOAD_ADDRESS := $(zload-y)
else
VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
$(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS))
endif
UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS)
vmlinuzobjs-y += $(obj)/piggy.o
quiet_cmd_zld = LD $@
cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
quiet_cmd_strip = STRIP $@
cmd_strip = $(STRIP) -s $@
vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
$(call cmd,zld)
$(call cmd,strip)
#
# Some DECstations need all possible sections of an ECOFF executable
#
ifdef CONFIG_MACH_DECSTATION
e2eflag := -a
endif
# elf2ecoff can only handle 32bit image
hostprogs-y += ../elf2ecoff
ifdef CONFIG_32BIT
VMLINUZ = vmlinuz
else
VMLINUZ = vmlinuz.32
endif
quiet_cmd_32 = OBJCOPY $@
cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
vmlinuz.32: vmlinuz
$(call cmd,32)
quiet_cmd_ecoff = ECOFF $@
cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
$(call cmd,ecoff)
OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
vmlinuz.bin: vmlinuz
$(call cmd,objcopy)
OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
vmlinuz.srec: vmlinuz
$(call cmd,objcopy)
uzImage.bin: vmlinuz.bin FORCE
$(call if_changed,uimage,none)
clean-files += $(objtree)/vmlinuz
clean-files += $(objtree)/vmlinuz.32
clean-files += $(objtree)/vmlinuz.ecoff
clean-files += $(objtree)/vmlinuz.bin
clean-files += $(objtree)/vmlinuz.srec