1 files changed, 149 insertions, 0 deletions

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
new file mode 100644
index 000000000000..9770f587af73
--- /dev/null
+++ b/arch/powerpc/boot/Makefile
@@ -0,0 +1,149 @@
+# Makefile for making ELF bootable images for booting on CHRP
+# using Open Firmware.
+#
+# Geert Uytterhoeven    September 1997
+#
+# Based on coffboot by Paul Mackerras
+# Simplified for ppc64 by Todd Inglett
+#
+# NOTE: this code is built for 32 bit in ELF32 format even though
+#       it packages a 64 bit kernel.  We do this to simplify the
+#       bootloader and increase compatibility with OpenFirmware.
+#
+#       To this end we need to define BOOTCC, etc, as the tools
+#       needed to build the 32 bit image.  These are normally HOSTCC,
+#       but may be a third compiler if, for example, you are cross
+#       compiling from an intel box.  Once the 64bit ppc gcc is
+#       stable it will probably simply be a compiler switch to
+#       compile for 32bit mode.
+#       To make it easier to setup a cross compiler,
+#       CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE
+#       in the toplevel makefile.
+
+
+HOSTCC          := gcc
+BOOTCFLAGS      := $(HOSTCFLAGS) -fno-builtin -nostdinc -isystem \
+                   $(shell $(CROSS32CC) -print-file-name=include) -fPIC
+BOOTAFLAGS      := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
+BOOTLFLAGS      := -T $(srctree)/$(src)/zImage.lds
+OBJCOPYFLAGS    := contents,alloc,load,readonly,data
+
+zlib       := infblock.c infcodes.c inffast.c inflate.c inftrees.c infutil.c
+zlibheader := infblock.h infcodes.h inffast.h inftrees.h infutil.h
+zliblinuxheader := zlib.h zconf.h zutil.h
+
+$(addprefix $(obj)/,$(zlib) main.o): $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
+#$(addprefix $(obj)/,main.o): $(addprefix $(obj)/,zlib.h)
+
+src-boot := string.S prom.c main.c div64.S crt0.S
+src-boot += $(zlib)
+src-boot := $(addprefix $(obj)/, $(src-boot))
+obj-boot := $(addsuffix .o, $(basename $(src-boot)))
+
+BOOTCFLAGS      += -I$(obj) -I$(srctree)/$(obj)
+
+quiet_cmd_copy_zlib = COPY    $@
+      cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
+
+quiet_cmd_copy_zlibheader = COPY    $@
+      cmd_copy_zlibheader = sed "s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
+# stddef.h for NULL
+quiet_cmd_copy_zliblinuxheader = COPY    $@
+      cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
+
+$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
+        $(call cmd,copy_zlib)
+
+$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
+        $(call cmd,copy_zlibheader)
+
+$(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
+        $(call cmd,copy_zliblinuxheader)
+
+clean-files := $(zlib) $(zlibheader) $(zliblinuxheader)
+
+
+quiet_cmd_bootcc = BOOTCC  $@
+      cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
+
+quiet_cmd_bootas = BOOTAS  $@
+      cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
+
+quiet_cmd_bootld = BOOTLD  $@
+      cmd_bootld = $(CROSS32LD) $(BOOTLFLAGS) -o $@ $(2)
+
+$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c
+        $(call if_changed_dep,bootcc)
+$(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S
+        $(call if_changed_dep,bootas)
+
+#-----------------------------------------------------------
+# ELF sections within the zImage bootloader/wrapper
+#-----------------------------------------------------------
+required := vmlinux.strip
+initrd   := initrd
+
+obj-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.o, $(section)))
+src-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.c, $(section)))
+gz-sec  = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.gz, $(section)))
+
+hostprogs-y             := addnote addRamDisk
+targets                 += zImage.vmode zImage.initrd.vmode zImage zImage.initrd \
+                           $(patsubst $(obj)/%,%, $(call obj-sec, $(required) $(initrd))) \
+                           $(patsubst $(obj)/%,%, $(call src-sec, $(required) $(initrd))) \
+                           $(patsubst $(obj)/%,%, $(call gz-sec, $(required) $(initrd))) \
+                           vmlinux.initrd
+extra-y                 := initrd.o
+
+quiet_cmd_ramdisk = RAMDISK $@
+      cmd_ramdisk = $(obj)/addRamDisk $(obj)/ramdisk.image.gz $< $@
+
+quiet_cmd_stripvm = STRIP   $@
+      cmd_stripvm = $(STRIP) -s -R .comment $< -o $@
+
+vmlinux.strip: vmlinux
+        $(call if_changed,stripvm)
+$(obj)/vmlinux.initrd: vmlinux.strip $(obj)/addRamDisk $(obj)/ramdisk.image.gz
+        $(call if_changed,ramdisk)
+
+quiet_cmd_addsection = ADDSEC  $@
+      cmd_addsection = $(CROSS32OBJCOPY) $@ \
+                --add-section=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(patsubst %.o,%.gz, $@) \
+                --set-section-flags=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(OBJCOPYFLAGS)
+
+quiet_cmd_addnote = ADDNOTE $@
+      cmd_addnote = $(obj)/addnote $@
+
+$(call gz-sec, $(required)): $(obj)/kernel-%.gz: %
+        $(call if_changed,gzip)
+
+$(obj)/kernel-initrd.gz: $(obj)/ramdisk.image.gz
+        cp -f $(obj)/ramdisk.image.gz $@
+
+$(call src-sec, $(required) $(initrd)): $(obj)/kernel-%.c: $(obj)/kernel-%.gz
+        @touch $@
+
+$(call obj-sec, $(required) $(initrd)): $(obj)/kernel-%.o: $(obj)/kernel-%.c
+        $(call if_changed_dep,bootcc)
+        $(call cmd,addsection)
+
+$(obj)/zImage.vmode: obj-boot += $(call obj-sec, $(required))
+$(obj)/zImage.vmode: $(call obj-sec, $(required)) $(obj-boot) $(srctree)/$(src)/zImage.lds
+        $(call cmd,bootld,$(obj-boot))
+
+$(obj)/zImage.initrd.vmode: obj-boot += $(call obj-sec, $(required) $(initrd))
+$(obj)/zImage.initrd.vmode: $(call obj-sec, $(required) $(initrd)) $(obj-boot) $(srctree)/$(src)/zImage.lds
+        $(call cmd,bootld,$(obj-boot))
+
+$(obj)/zImage: $(obj)/zImage.vmode $(obj)/addnote
+        @cp -f $< $@
+        $(call if_changed,addnote)
+
+$(obj)/zImage.initrd: $(obj)/zImage.initrd.vmode $(obj)/addnote
+        @cp -f $< $@
+        $(call if_changed,addnote)
+
+install: $(CONFIGURE) $(BOOTIMAGE)
+        sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" "$(BOOTIMAGE)"
+
+clean-files := $(addprefix $(objtree)/, $(obj-boot) vmlinux.strip)