Tegra20: Move some code files to common directories for upcoming Tegra30 patches.

Move files that are going to be common between T20 and T30 into 'tegra-common'
subdirs in AVP (arm720t), CPU (armv7), and shared (arch/arm/cpu/.) areas. Any
files that are left behind in '/tegra20' will be copied to '/tegra30' subdirs
and modified for that SoC. The 'common' files should need only minor changes.

Include files (arch/arm/include/asm/arch-tegra/tegra20) will be done in a
follow-on patch.

Builds fine w/MAKEALL -s tegra20. Checkpatch.pl is clean.

Signed-off-by: Tom Warren <twarren@nvidia.com>

Makefile

@@ -343,6 +343,8 @@ LIBS-y += $(CPUDIR)/s5p-common/libs5p-common.o
 endif
 ifeq ($(SOC),tegra20)
 LIBS-y += arch/$(ARCH)/cpu/$(SOC)-common/lib$(SOC)-common.o
+LIBS-y += arch/$(ARCH)/cpu/tegra-common/libcputegra-common.o
+LIBS-y += $(CPUDIR)/tegra-common/libtegra-common.o
 endif
 
 LIBS := $(addprefix $(obj),$(sort $(LIBS-y)))

arch/arm/cpu/arm720t/tegra-common/Makefile

@@ -0,0 +1,47 @@
+#
+# (C) Copyright 2010,2011 Nvidia Corporation.
+#
+# (C) Copyright 2000-2008
+# 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	= $(obj)libtegra-common.o
+
+COBJS-$(CONFIG_SPL_BUILD) += spl.o
+
+SRCS	:= $(COBJS-y:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS-y))
+
+all:	$(obj).depend $(LIB)
+
+$(LIB):	$(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################

arch/arm/cpu/arm720t/tegra20/Makefile

@@ -28,7 +28,6 @@ include $(TOPDIR)/config.mk
 LIB	= $(obj)lib$(SOC).o
 
 COBJS-y	+= cpu.o
-COBJS-$(CONFIG_SPL_BUILD) += spl.o
 
 SRCS	:= $(COBJS-y:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS-y))

arch/arm/cpu/arm720t/tegra20/cpu.c

@@ -29,7 +29,7 @@
 #include <asm/arch/pinmux.h>
 #include <asm/arch/scu.h>
 #include <common.h>
-#include "cpu.h"
+#include "../tegra-common/cpu.h"
 
 /* Returns 1 if the current CPU executing is a Cortex-A9, else 0 */
 int ap20_cpu_is_cortexa9(void)

arch/arm/cpu/armv7/tegra-common/Makefile

@@ -0,0 +1,48 @@
+#
+# (C) Copyright 2010,2011 Nvidia Corporation.
+#
+# (C) Copyright 2000-2003
+# 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	=  $(obj)libtegra-common.o
+
+COBJS-$(CONFIG_CMD_ENTERRCM) += cmd_enterrcm.o
+
+COBJS	:= $(COBJS-y)
+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
+
+#########################################################################

arch/arm/cpu/armv7/tegra20/Makefile

@@ -28,7 +28,6 @@ include $(TOPDIR)/config.mk
 LIB	=  $(obj)lib$(SOC).o
 
 COBJS-$(CONFIG_USB_EHCI_TEGRA) += usb.o
-COBJS-$(CONFIG_CMD_ENTERRCM) += cmd_enterrcm.o
 
 COBJS	:= $(COBJS-y)
 SRCS	:= $(COBJS:.o=.c)

arch/arm/cpu/tegra-common/Makefile

@@ -0,0 +1,48 @@
+#
+# (C) Copyright 2010,2011 Nvidia Corporation.
+#
+# (C) Copyright 2000-2008
+# 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)libcputegra-common.o
+
+SOBJS += lowlevel_init.o
+COBJS-y	+= ap.o board.o sys_info.o timer.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS-y))
+
+all:	$(obj).depend $(LIB)
+
+$(LIB):	$(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################

arch/arm/cpu/tegra20-common/Makefile

@@ -31,8 +31,7 @@ CFLAGS_arch/arm/cpu/tegra20-common/warmboot_avp.o += -march=armv4t
 
 LIB	= $(obj)lib$(SOC)-common.o
 
-SOBJS += lowlevel_init.o
-COBJS-y	+= ap20.o board.o clock.o funcmux.o pinmux.o sys_info.o timer.o
+COBJS-y	+= clock.o funcmux.o pinmux.o
 COBJS-$(CONFIG_TEGRA_LP0) += warmboot.o crypto.o warmboot_avp.o
 COBJS-$(CONFIG_TEGRA_CLOCK_SCALING) += emc.o
 COBJS-$(CONFIG_TEGRA_PMU) += pmu.o

spl/Makefile

@@ -67,6 +67,8 @@ endif
 
 ifeq ($(SOC),tegra20)
 LIBS-y += arch/$(ARCH)/cpu/$(SOC)-common/lib$(SOC)-common.o
+LIBS-y += arch/$(ARCH)/cpu/tegra-common/libcputegra-common.o
+LIBS-y += $(CPUDIR)/tegra-common/libtegra-common.o
 endif
 
 # Add GCC lib