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https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
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379507181a
The SPU context save/restore code is currently built for a 4k page size and we provide a _shipped version of it since most people don't have the spu toolchain that is needed to rebuild that code. This patch hardcodes the data structures to a 64k page alignment, which also guarantees 4k alignment but unfortunately wastes 60k of memory per SPU context that is created in the running system. We will follow up on this with another patch to reduce that overhead or maybe redo the context save/restore logic to do this part entirely different, but for now it should make experimental systems work with either page size. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
60 lines
1.8 KiB
Makefile
60 lines
1.8 KiB
Makefile
obj-y += switch.o
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obj-$(CONFIG_SPU_FS) += spufs.o
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spufs-y += inode.o file.o context.o syscalls.o
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spufs-y += sched.o backing_ops.o hw_ops.o run.o
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# Rules to build switch.o with the help of SPU tool chain
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SPU_CROSS := spu-
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SPU_CC := $(SPU_CROSS)gcc
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SPU_AS := $(SPU_CROSS)gcc
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SPU_LD := $(SPU_CROSS)ld
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SPU_OBJCOPY := $(SPU_CROSS)objcopy
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SPU_CFLAGS := -O2 -Wall -I$(srctree)/include \
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-I$(objtree)/include2 -D__KERNEL__
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SPU_AFLAGS := -c -D__ASSEMBLY__ -I$(srctree)/include \
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-I$(objtree)/include2 -D__KERNEL__
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SPU_LDFLAGS := -N -Ttext=0x0
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$(obj)/switch.o: $(obj)/spu_save_dump.h $(obj)/spu_restore_dump.h
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clean-files := spu_save_dump.h spu_restore_dump.h
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# Compile SPU files
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cmd_spu_cc = $(SPU_CC) $(SPU_CFLAGS) -c -o $@ $<
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quiet_cmd_spu_cc = SPU_CC $@
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$(obj)/spu_%.o: $(src)/spu_%.c
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$(call if_changed,spu_cc)
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# Assemble SPU files
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cmd_spu_as = $(SPU_AS) $(SPU_AFLAGS) -o $@ $<
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quiet_cmd_spu_as = SPU_AS $@
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$(obj)/spu_%.o: $(src)/spu_%.S
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$(call if_changed,spu_as)
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# Link SPU Executables
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cmd_spu_ld = $(SPU_LD) $(SPU_LDFLAGS) -o $@ $^
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quiet_cmd_spu_ld = SPU_LD $@
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$(obj)/spu_%: $(obj)/spu_%_crt0.o $(obj)/spu_%.o
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$(call if_changed,spu_ld)
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# Copy into binary format
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cmd_spu_objcopy = $(SPU_OBJCOPY) -O binary $< $@
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quiet_cmd_spu_objcopy = OBJCOPY $@
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$(obj)/spu_%.bin: $(src)/spu_%
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$(call if_changed,spu_objcopy)
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# create C code from ELF executable
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cmd_hexdump = ( \
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echo "/*" ; \
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echo " * $*_dump.h: Copyright (C) 2005 IBM." ; \
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echo " * Hex-dump auto generated from $*.c." ; \
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echo " * Do not edit!" ; \
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echo " */" ; \
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echo "static unsigned int $*_code[] " \
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"__attribute__((__aligned__(128))) = {" ; \
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hexdump -v -e '"0x" 4/1 "%02x" "," "\n"' $< ; \
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echo "};" ; \
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) > $@
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quiet_cmd_hexdump = HEXDUMP $@
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$(obj)/%_dump.h: $(obj)/%.bin
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$(call if_changed,hexdump)
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