tegra3: Add basic Tegra30 support

This adds the most basic Tegra30 support to U-Boot, by making use of
existing tegra2 code and adding what is necessary to build.

BUG=chromium-os:19004
TEST=build and boot on T30 board

Change-Id: If75599b2e76dbec3281fffb8a244b6145e9648cc
Reviewed-on: http://gerrit.chromium.org/gerrit/7130
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>

3 files changed, 123 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv7/tegra3/Makefile b/arch/arm/cpu/armv7/tegra3/Makefile
new file mode 100644
index 0000000000..98468450c8
--- /dev/null
+++ b/arch/arm/cpu/armv7/tegra3/Makefile
@@ -0,0 +1,52 @@
+#
+# (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
+#
+
+# The AVP is ARMv4T architecture so we must use special compiler
+# flags for any files it might use.
+
+include $(TOPDIR)/config.mk
+
+LIB	=  $(obj)lib$(SOC).o
+
+COBJS-y	:= board.o sys_info.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
+
+#########################################################################
diff --git a/arch/arm/cpu/armv7/tegra3/board.c b/arch/arm/cpu/armv7/tegra3/board.c
new file mode 100644
index 0000000000..861174e89e
--- /dev/null
+++ b/arch/arm/cpu/armv7/tegra3/board.c
@@ -0,0 +1,36 @@
+/*
+ *  (C) Copyright 2010,2011
+ *  NVIDIA Corporation <www.nvidia.com>
+ *
+ * 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 <common.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/tegra.h>
+#include <asm/arch-tegra/board.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+unsigned int board_query_sdram_size(void)
+{
+	/* TBD - check odmdata in PMC scratch reg */
+	return 0x40000000;	/* Cardhu = 1GB */
+}
diff --git a/arch/arm/cpu/armv7/tegra3/sys_info.c b/arch/arm/cpu/armv7/tegra3/sys_info.c
new file mode 100644
index 0000000000..a9ee6cdb2a
--- /dev/null
+++ b/arch/arm/cpu/armv7/tegra3/sys_info.c
@@ -0,0 +1,35 @@
+/*
+ * (C) Copyright 2010,2011
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * 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 <common.h>
+
+#ifdef CONFIG_DISPLAY_CPUINFO
+/* Print CPU information */
+int print_cpuinfo(void)
+{
+	puts("TEGRA3\n");
+
+	/* TBD: Add printf of major/minor rev info, stepping, etc. */
+	return 0;
+}
+#endif	/* CONFIG_DISPLAY_CPUINFO */