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Some platforms support a variety processor modules with no method of determining which exact processor module is being used except by examining Vital Product Data (VPD). The modules may have different amounts of memory, clock frequencies, etc. so reading the VPD becomes necessary to correctly set properties in the device tree before its passed to the kernel. Often the VPD is stored in I2C EEPROMs so an I2C driver becomes necessary. This I2C driver is for the I2C controller that's embedded on the Marvel mv64x60 line of host bridges. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
234 lines
8.3 KiB
Makefile
234 lines
8.3 KiB
Makefile
# Makefile for making ELF bootable images for booting on CHRP
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# using Open Firmware.
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#
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# Geert Uytterhoeven September 1997
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#
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# Based on coffboot by Paul Mackerras
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# Simplified for ppc64 by Todd Inglett
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#
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# NOTE: this code is built for 32 bit in ELF32 format even though
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# it packages a 64 bit kernel. We do this to simplify the
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# bootloader and increase compatibility with OpenFirmware.
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#
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# To this end we need to define BOOTCC, etc, as the tools
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# needed to build the 32 bit image. These are normally HOSTCC,
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# but may be a third compiler if, for example, you are cross
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# compiling from an intel box. Once the 64bit ppc gcc is
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# stable it will probably simply be a compiler switch to
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# compile for 32bit mode.
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# To make it easier to setup a cross compiler,
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# CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE
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# in the toplevel makefile.
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all: $(obj)/zImage
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HOSTCC := gcc
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BOOTCFLAGS := $(HOSTCFLAGS) -fno-builtin -nostdinc -isystem \
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$(shell $(CROSS32CC) -print-file-name=include) -fPIC
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BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
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ifeq ($(call cc-option-yn, -fstack-protector),y)
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BOOTCFLAGS += -fno-stack-protector
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endif
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BOOTCFLAGS += -I$(obj) -I$(srctree)/$(obj)
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zlib := inffast.c inflate.c inftrees.c
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zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
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zliblinuxheader := zlib.h zconf.h zutil.h
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$(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \
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$(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
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src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \
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ns16550.c serial.c simple_alloc.c div64.S util.S \
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gunzip_util.c elf_util.c $(zlib) devtree.c \
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44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c
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src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \
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cuboot-ebony.c treeboot-ebony.c
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src-boot := $(src-wlib) $(src-plat) empty.c
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src-boot := $(addprefix $(obj)/, $(src-boot))
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obj-boot := $(addsuffix .o, $(basename $(src-boot)))
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obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib))))
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obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat))))
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quiet_cmd_copy_zlib = COPY $@
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cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
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quiet_cmd_copy_zlibheader = COPY $@
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cmd_copy_zlibheader = sed "s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
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# stddef.h for NULL
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quiet_cmd_copy_zliblinuxheader = COPY $@
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cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
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$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
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$(call cmd,copy_zlib)
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$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
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$(call cmd,copy_zlibheader)
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$(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
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$(call cmd,copy_zliblinuxheader)
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$(obj)/empty.c:
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@touch $@
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$(obj)/zImage.lds $(obj)/zImage.coff.lds: $(obj)/%: $(srctree)/$(src)/%.S
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@cp $< $@
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clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
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empty.c zImage.coff.lds zImage.lds
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quiet_cmd_bootcc = BOOTCC $@
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cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
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quiet_cmd_bootas = BOOTAS $@
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cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
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quiet_cmd_bootar = BOOTAR $@
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cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@
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$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c FORCE
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$(call if_changed_dep,bootcc)
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$(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S FORCE
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$(call if_changed_dep,bootas)
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$(obj)/wrapper.a: $(obj-wlib) FORCE
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$(call if_changed,bootar)
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hostprogs-y := addnote addRamDisk hack-coff mktree
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targets += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a)
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extra-y := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
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$(obj)/zImage.lds $(obj)/zImage.coff.lds
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wrapper :=$(srctree)/$(src)/wrapper
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wrapperbits := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
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$(wrapper) FORCE
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#############
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# Bits for building various flavours of zImage
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ifneq ($(CROSS32_COMPILE),)
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CROSSWRAP := -C "$(CROSS32_COMPILE)"
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else
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ifneq ($(CROSS_COMPILE),)
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CROSSWRAP := -C "$(CROSS_COMPILE)"
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endif
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endif
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# args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
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quiet_cmd_wrap = WRAP $@
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cmd_wrap =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \
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$(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux
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image-$(CONFIG_PPC_PSERIES) += zImage.pseries
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image-$(CONFIG_PPC_MAPLE) += zImage.pseries
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image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries
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image-$(CONFIG_PPC_PS3) += zImage.ps3
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image-$(CONFIG_PPC_CELLEB) += zImage.pseries
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image-$(CONFIG_PPC_CHRP) += zImage.chrp
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image-$(CONFIG_PPC_EFIKA) += zImage.chrp
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image-$(CONFIG_PPC_PMAC) += zImage.pmac
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image-$(CONFIG_PPC_HOLLY) += zImage.holly-elf
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image-$(CONFIG_DEFAULT_UIMAGE) += uImage
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ifneq ($(CONFIG_DEVICE_TREE),"")
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image-$(CONFIG_PPC_83xx) += cuImage.83xx
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image-$(CONFIG_PPC_85xx) += cuImage.85xx
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image-$(CONFIG_EBONY) += treeImage.ebony cuImage.ebony
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endif
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# For 32-bit powermacs, build the COFF and miboot images
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# as well as the ELF images.
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ifeq ($(CONFIG_PPC32),y)
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image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot
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endif
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initrd- := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-))
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initrd-y := $(patsubst zImage%, zImage.initrd%, \
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$(patsubst treeImage%, treeImage.initrd%, $(image-y)))
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initrd-y := $(filter-out $(image-y), $(initrd-y))
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targets += $(image-y) $(initrd-y)
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$(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz
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dts- := $(patsubst zImage%, zImage.dts%, $(image-n) $(image-))
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dts-y := $(patsubst zImage%, zImage.dts%, $(image-y))
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dts-y := $(filter-out $(image-y), $(dts-y))
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targets += $(image-y) $(dts-y)
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dts_initrd- := $(patsubst zImage%, zImage.dts_initrd%, $(image-n) $(image-))
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dts_initrd-y := $(patsubst zImage%, zImage.dts_initrd%, $(image-y))
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dts_initrd-y := $(filter-out $(image-y), $(dts_initrd-y))
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targets += $(image-y) $(dts_initrd-y)
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$(addprefix $(obj)/, $(dts_initrd-y)): $(obj)/ramdisk.image.gz
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# Don't put the ramdisk on the pattern rule; when its missing make will try
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# the pattern rule with less dependencies that also matches (even with the
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# hard dependency listed).
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$(obj)/zImage.dts_initrd.%: vmlinux $(wrapperbits) $(dts) $(obj)/ramdisk.image.gz
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$(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz)
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$(obj)/zImage.dts.%: vmlinux $(wrapperbits) $(dts)
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$(call if_changed,wrap,$*,$(dts))
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$(obj)/zImage.initrd.%: vmlinux $(wrapperbits)
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$(call if_changed,wrap,$*,,,$(obj)/ramdisk.image.gz)
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$(obj)/zImage.%: vmlinux $(wrapperbits)
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$(call if_changed,wrap,$*)
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$(obj)/zImage.ps3: vmlinux
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$(STRIP) -s -R .comment $< -o $@
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$(obj)/zImage.initrd.ps3: vmlinux
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@echo " WARNING zImage.initrd.ps3 not supported (yet)"
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$(obj)/zImage.holly-elf: vmlinux $(wrapperbits)
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$(call if_changed,wrap,holly,$(obj)/dts/holly.dts,,)
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$(obj)/zImage.initrd.holly-elf: vmlinux $(wrapperbits) $(obj)/ramdisk.image.gz
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$(call if_changed,wrap,holly,$(obj)/dts/holly.dts,,$(obj)/ramdisk.image.gz)
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$(obj)/uImage: vmlinux $(wrapperbits)
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$(call if_changed,wrap,uboot)
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# CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
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dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\
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,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%)
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$(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits)
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$(call if_changed,wrap,cuboot-$*,$(dts))
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$(obj)/treeImage.%: vmlinux $(dts) $(wrapperbits)
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$(call if_changed,wrap,treeboot-$*,$(dts))
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$(obj)/treeImage.initrd.%: vmlinux $(dts) $(wrapperbits)
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$(call if_changed,wrap,treeboot-$*,$(dts),,$(obj)/ramdisk.image.gz)
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$(obj)/zImage: $(addprefix $(obj)/, $(image-y))
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@rm -f $@; ln $< $@
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$(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y))
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@rm -f $@; ln $< $@
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$(obj)/zImage.dts: $(addprefix $(obj)/, $(dts-y))
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@rm -f $@; ln $< $@
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$(obj)/zImage.dts_initrd: $(addprefix $(obj)/, $(dts_initrd-y))
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@rm -f $@; ln $< $@
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install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y))
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sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $<
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# anything not in $(targets)
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clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* \
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treeImage.* zImage.dts zImage.dts_initrd
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# clean up files cached by wrapper
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clean-kernel := vmlinux.strip vmlinux.bin
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clean-kernel += $(addsuffix .gz,$(clean-kernel))
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# If not absolute clean-files are relative to $(obj).
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clean-files += $(addprefix $(objtree)/, $(clean-kernel))
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