[U-Boot] [PATCH 2/4] tegra2: Add common Avionic Design Tamonten support.

[Thierry Reding <thierry.reding@avionic-design.de>]

Tamonten is an NVIDIA Tegra2-based SO-DIMM processor module that is
derived from the Harmony reference design.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
---
 board/avionic-design/common/tamonten.c |  164 ++++++++++++++++++++++++++++++++
 board/avionic-design/common/tamonten.h |   34 +++++++
 2 files changed, 198 insertions(+), 0 deletions(-)
 create mode 100644 board/avionic-design/common/tamonten.c
 create mode 100644 board/avionic-design/common/tamonten.h

diff --git a/board/avionic-design/common/tamonten.c b/board/avionic-design/common/tamonten.c
new file mode 100644
index 0000000..05f9021
--- /dev/null
+++ b/board/avionic-design/common/tamonten.c
@@ -0,0 +1,164 @@
+/*
+ *  (C) Copyright 2010,2011
+ *  NVIDIA Corporation <www.nvidia.com>
+ *  (C) Copyright 2011
+ *  Avionic Design GmbH <www.avionic-design.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 <common.h>
+#include <ns16550.h>
+#include <asm/io.h>
+#include <asm/arch/tegra2.h>
+#include <asm/arch/sys_proto.h>
+
+#include <asm/arch/clk_rst.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/uart.h>
+#include "tamonten.h"
+
+#ifdef CONFIG_TEGRA2_MMC
+#include <mmc.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+const struct tegra2_sysinfo sysinfo = {
+	CONFIG_TEGRA2_BOARD_STRING
+};
+
+/*
+ * Routine: timer_init
+ * Description: init the timestamp and lastinc value
+ */
+int timer_init(void)
+{
+	return 0;
+}
+
+static void enable_uart(enum periph_id pid)
+{
+	/* Assert UART reset and enable clock */
+	reset_set_enable(pid, 1);
+	clock_enable(pid);
+	clock_ll_set_source(pid, 0);	/* UARTx_CLK_SRC = 00, PLLP_OUT0 */
+
+	/* wait for 2us */
+	udelay(2);
+
+	/* De-assert reset to UART */
+	reset_set_enable(pid, 0);
+}
+
+/*
+ * Routine: clock_init_uart
+ * Description: init the PLL and clock for the UART(s)
+ */
+static void clock_init_uart(void)
+{
+#if defined(CONFIG_TEGRA2_ENABLE_UARTD)
+	enable_uart(PERIPH_ID_UART4);
+#endif /* CONFIG_TEGRA2_ENABLE_UARTD */
+}
+
+/*
+ * Routine: pin_mux_uart
+ * Description: setup the pin muxes/tristate values for the UART(s)
+ */
+static void pin_mux_uart(void)
+{
+#if defined(CONFIG_TEGRA2_ENABLE_UARTD)
+	pinmux_set_func(PINGRP_GMC, PMUX_FUNC_UARTD);
+
+	pinmux_tristate_disable(PINGRP_GMC);
+#endif /* CONFIG_TEGRA2_ENABLE_UARTD */
+}
+
+#ifdef CONFIG_TEGRA2_MMC
+/*
+ * Routine: pin_mux_mmc
+ * Description: setup the pin muxes/tristate values for the SDMMC(s)
+ */
+static void pin_mux_mmc(void)
+{
+	/* SDMMC4: config 3, x8 on 2nd set of pins */
+	pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4);
+	pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4);
+	pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4);
+
+	pinmux_tristate_disable(PINGRP_ATB);
+	pinmux_tristate_disable(PINGRP_GMA);
+	pinmux_tristate_disable(PINGRP_GME);
+}
+#endif
+
+/*
+ * Routine: board_init
+ * Description: Early hardware init.
+ */
+int board_init(void)
+{
+	clock_init();
+	clock_verify();
+
+	/* boot param addr */
+	gd->bd->bi_boot_params = (NV_PA_SDRAM_BASE + 0x100);
+
+	return 0;
+}
+
+#ifdef CONFIG_TEGRA2_MMC
+/* this is a weak define that we are overriding */
+int board_mmc_init(bd_t *bd)
+{
+	debug("board_mmc_init called\n");
+	/* Enable muxes, etc. for SDMMC controllers */
+	pin_mux_mmc();
+	gpio_config_mmc();
+
+	debug("board_mmc_init: init eMMC\n");
+	/* init dev 0, eMMC chip, with 4-bit bus */
+	tegra2_mmc_init(0, 4);
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_BOARD_EARLY_INIT_F
+int board_early_init_f(void)
+{
+	/* Initialize essential common plls */
+	clock_early_init();
+
+	/* Initialize UART clocks */
+	clock_init_uart();
+
+	/* Initialize periph pinmuxes */
+	pin_mux_uart();
+
+	/* Initialize periph GPIOs */
+	gpio_config_uart();
+
+	/* Init UART, scratch regs, and start CPU */
+	tegra2_start();
+	return 0;
+}
+#endif /* EARLY_INIT */
diff --git a/board/avionic-design/common/tamonten.h b/board/avionic-design/common/tamonten.h
new file mode 100644
index 0000000..802bc51
--- /dev/null
+++ b/board/avionic-design/common/tamonten.h
@@ -0,0 +1,34 @@
+/*
+ *  (C) Copyright 2010,2011
+ *  NVIDIA Corporation <www.nvidia.com>
+ *  (C) Copyright 2011
+ *  Avionic Design GmbH <www.avionic-design.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
+ */
+
+#ifndef _TAMONTEN_H_
+#define _TAMONTEN_H_
+
+void tegra2_start(void);
+void gpio_config_uart(void);
+void gpio_config_mmc(void);
+int tegra2_mmc_init(int dev_index, int bus_width);
+
+#endif /* TAMONTEN_H */
-- 
1.7.7.3