Signed-off-by: Simon Glass <s...@chromium.org>
---
 arch/arm/cpu/armv7/tegra2/board.c        |   51 ++++++++++++++++++++++++++++++
 arch/arm/include/asm/arch-tegra2/board.h |   30 +++++++++++++++++
 2 files changed, 81 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/include/asm/arch-tegra2/board.h

diff --git a/arch/arm/cpu/armv7/tegra2/board.c 
b/arch/arm/cpu/armv7/tegra2/board.c
index 2fd38ae..2fd493c 100644
--- a/arch/arm/cpu/armv7/tegra2/board.c
+++ b/arch/arm/cpu/armv7/tegra2/board.c
@@ -24,12 +24,22 @@
 #include <common.h>
 #include <asm/io.h>
 #include "ap20.h"
+#include <asm/arch/clock.h>
+#include <asm/arch/funcmux.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/tegra2.h>
 #include <asm/arch/pmc.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
+enum {
+       /* UARTs which we can enable */
+       UARTA   = 1 << 0,
+       UARTB   = 1 << 1,
+       UARTD   = 1 << 3,
+       UART_COUNT = 4,
+};
+
 /*
  * Boot ROM initializes the odmdata in APBDEV_PMC_SCRATCH20_0,
  * so we are using this value to identify memory size.
@@ -89,3 +99,44 @@ int arch_cpu_init(void)
        return 0;
 }
 #endif
+
+/**
+ * Set up the specified uarts
+ *
+ * @param uarts_ids    Mask containing UARTs to init (UARTx)
+ */
+static void setup_uarts(int uart_ids)
+{
+       static enum periph_id id_for_uart[UART_COUNT] = {
+               PERIPH_ID_UART1,
+               PERIPH_ID_UART2,
+               PERIPH_ID_UART3,
+               PERIPH_ID_UART4,
+       };
+       int i;
+
+       for (i = 0; i < UART_COUNT; i++) {
+               if (uart_ids & (1 << i)) {
+                       enum periph_id id = id_for_uart[i];
+
+                       funcmux_select(id, 0);
+                       funcmux_enable_f(id);
+               }
+       }
+}
+
+void board_init_uart_f(void)
+{
+       int uart_ids = 0;       /* bit mask of which UART ids to enable */
+
+#ifdef CONFIG_TEGRA2_ENABLE_UARTA
+       uart_ids |= UARTA;
+#endif
+#ifdef CONFIG_TEGRA2_ENABLE_UARTB
+       uart_ids |= UARTB;
+#endif
+#ifdef CONFIG_TEGRA2_ENABLE_UARTD
+       uart_ids |= UARTD;
+#endif
+       setup_uarts(uart_ids);
+}
diff --git a/arch/arm/include/asm/arch-tegra2/board.h 
b/arch/arm/include/asm/arch-tegra2/board.h
new file mode 100644
index 0000000..a90d36c
--- /dev/null
+++ b/arch/arm/include/asm/arch-tegra2/board.h
@@ -0,0 +1,30 @@
+/*
+ *  (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
+ */
+
+#ifndef _TEGRA_BOARD_H_
+#define _TEGRA_BOARD_H_
+
+/* Setup UARTs for the board according to the selected config */
+void board_init_uart_f(void);
+
+#endif
-- 
1.7.3.1

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