MIPS: Au1x00: Move all Au1x00 specific code to separate subdirectory

Au1x00 is a SoC and its specific code should reside in an own
SoC subdirectory. Also add -mtune=4kc flag for CPU optimization.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
Cc: Thomas Lange <thomas@corelatus.se>
Signed-off-by: Shinya Kuribayashi <skuribay@pobox.com>
diff --git a/arch/mips/cpu/mips32/Makefile b/arch/mips/cpu/mips32/Makefile
index 88e3023..e315c1b 100644
--- a/arch/mips/cpu/mips32/Makefile
+++ b/arch/mips/cpu/mips32/Makefile
@@ -29,8 +29,6 @@
 SOBJS-y	= cache.o
 COBJS-y	= cpu.o interrupts.o
 
-COBJS-$(CONFIG_SOC_AU1X00) += au1x00_eth.o au1x00_serial.o au1x00_usb_ohci.o
-
 SRCS	:= $(START:.o=.S) $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
 START	:= $(addprefix $(obj),$(START))
diff --git a/arch/mips/cpu/mips32/au1x00/Makefile b/arch/mips/cpu/mips32/au1x00/Makefile
new file mode 100644
index 0000000..dc58475
--- /dev/null
+++ b/arch/mips/cpu/mips32/au1x00/Makefile
@@ -0,0 +1,45 @@
+#
+# (C) Copyright 2011
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(SOC).o
+
+COBJS	= au1x00_eth.o au1x00_serial.o au1x00_usb_ohci.o
+
+SRCS	:= $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+
+all:	$(obj).depend $(LIB)
+
+$(LIB):	$(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/mips/cpu/mips32/au1x00_eth.c b/arch/mips/cpu/mips32/au1x00/au1x00_eth.c
similarity index 100%
rename from arch/mips/cpu/mips32/au1x00_eth.c
rename to arch/mips/cpu/mips32/au1x00/au1x00_eth.c
diff --git a/arch/mips/cpu/mips32/au1x00_serial.c b/arch/mips/cpu/mips32/au1x00/au1x00_serial.c
similarity index 100%
rename from arch/mips/cpu/mips32/au1x00_serial.c
rename to arch/mips/cpu/mips32/au1x00/au1x00_serial.c
diff --git a/arch/mips/cpu/mips32/au1x00_usb_ohci.c b/arch/mips/cpu/mips32/au1x00/au1x00_usb_ohci.c
similarity index 100%
rename from arch/mips/cpu/mips32/au1x00_usb_ohci.c
rename to arch/mips/cpu/mips32/au1x00/au1x00_usb_ohci.c
diff --git a/arch/mips/cpu/mips32/au1x00_usb_ohci.h b/arch/mips/cpu/mips32/au1x00/au1x00_usb_ohci.h
similarity index 100%
rename from arch/mips/cpu/mips32/au1x00_usb_ohci.h
rename to arch/mips/cpu/mips32/au1x00/au1x00_usb_ohci.h
diff --git a/arch/mips/cpu/mips32/au1x00/config.mk b/arch/mips/cpu/mips32/au1x00/config.mk
new file mode 100644
index 0000000..568f333
--- /dev/null
+++ b/arch/mips/cpu/mips32/au1x00/config.mk
@@ -0,0 +1,24 @@
+#
+# (C) Copyright 2011
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+PLATFORM_CPPFLAGS += -mtune=4kc