tegra2: Add support for Compal Paz00 (Toshiba AC100)

The Toshiba AC100 (Compal code-name Paz00, aka Dynabook AZ) is a netbook
derived from the NVIDIA Tegra Harmony reference board. It ships with
Android, but is often repurposed to run Linux. This patch adds just enough
support to get a U-Boot serial console, and the ability access built-in
eMMC and the external SD slot.

v2:
* Rebased on latest HEAD, incorporated changes made to other board files.
* Moved board files from board/nvidia to board/compal.
* Switched to correct odmdata value. This required add the previous patch
  to fix U-Boot's interpretation of the odmdata RAM size field.
* Removed nvmem= from default Linux kernel command-line; no drivers use the
  reserved memory yet, so there's no point reserving it.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>

MAINTAINERS

@@ -899,6 +899,7 @@ Tom Warren <twarren@nvidia.com>
 Stephen Warren <swarren@nvidia.com>
 
 	ventana		Tegra2 (ARM7 & A9 Dual Core)
+	paz00		Tegra2 (ARM7 & A9 Dual Core)
 
 Thomas Weber <weber@corscience.de>
 

board/compal/paz00/Makefile

@@ -0,0 +1,41 @@
+#
+# Copyright (c) 2010-2012, NVIDIA CORPORATION.  All rights reserved.
+#
+# 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 and conditions of the GNU General Public License,
+# version 2, as published by the Free Software Foundation.
+#
+# This program is distributed in the hope 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.
+#
+
+include $(TOPDIR)/config.mk
+
+ifneq ($(OBJTREE),$(SRCTREE))
+$(shell mkdir -p $(obj)../../nvidia/common)
+endif
+
+LIB	= $(obj)lib$(BOARD).o
+
+COBJS	:= $(BOARD).o
+COBJS	+= ../../nvidia/common/board.o
+
+SRCS	:= $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+
+$(LIB):	$(obj).depend $(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################

board/compal/paz00/paz00.c

@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2010-2012, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/tegra2.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/mmc.h>
+#include <asm/gpio.h>
+#ifdef CONFIG_TEGRA2_MMC
+#include <mmc.h>
+#endif
+
+/*
+ * Routine: gpio_config_uart
+ * Description: Does nothing on Paz00 - no conflict w/SPI.
+ */
+void gpio_config_uart(void)
+{
+}
+
+#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);
+
+	/* SDMMC1: SDIO1_CLK, SDIO1_CMD, SDIO1_DAT[3:0] */
+	pinmux_set_func(PINGRP_SDMMC1, PMUX_FUNC_SDIO1);
+
+	pinmux_tristate_disable(PINGRP_SDMMC1);
+
+	/* For power GPIO PV1 */
+	pinmux_tristate_disable(PINGRP_UAC);
+	/* For CD GPIO PI5 */
+	pinmux_tristate_disable(PINGRP_ATC);
+}
+
+/* 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();
+
+	debug("board_mmc_init: init eMMC\n");
+	/* init dev 0, eMMC chip, with 4-bit bus */
+	/* The board has an 8-bit bus, but 8-bit doesn't work yet */
+	tegra2_mmc_init(0, 4, -1, -1);
+
+	debug("board_mmc_init: init SD slot\n");
+	/* init dev 3, SD slot, with 4-bit bus */
+	tegra2_mmc_init(3, 4, GPIO_PV1, GPIO_PI5);
+
+	return 0;
+}
+#endif

boards.cfg

@@ -250,6 +250,7 @@ colibri_pxa270               arm         pxa         -                   toradex
 jornada                      arm         sa1100
 plutux                       arm         armv7       plutux              avionic-design tegra2
 medcom                       arm         armv7       medcom              avionic-design tegra2
+paz00                        arm         armv7       paz00               compal         tegra2
 atngw100                     avr32       at32ap      -                   atmel          at32ap700x
 atstk1002                    avr32       at32ap      atstk1000           atmel          at32ap700x
 atstk1003                    avr32       at32ap      atstk1000           atmel          at32ap700x

include/configs/paz00.h

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2010,2011, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include <asm/sizes.h>
+#include "tegra2-common.h"
+
+/* High-level configuration options */
+#define TEGRA2_SYSMEM		"mem=512M@0M"
+#define V_PROMPT		"Tegra2 (Paz00) MOD # "
+#define CONFIG_TEGRA2_BOARD_STRING	"Compal Paz00"
+
+/* Board-specific serial config */
+#define CONFIG_SERIAL_MULTI
+#define CONFIG_TEGRA2_ENABLE_UARTA
+#define CONFIG_SYS_NS16550_COM1		NV_PA_APB_UARTA_BASE
+
+#define CONFIG_MACH_TYPE		MACH_TYPE_PAZ00
+#define CONFIG_SYS_BOARD_ODMDATA	0x800c0085 /* lp1, 512MB */
+
+#define CONFIG_BOARD_EARLY_INIT_F
+
+/* SD/MMC */
+#define CONFIG_MMC
+#define CONFIG_GENERIC_MMC
+#define CONFIG_TEGRA2_MMC
+#define CONFIG_CMD_MMC
+
+#define CONFIG_DOS_PARTITION
+#define CONFIG_EFI_PARTITION
+#define CONFIG_CMD_EXT2
+#define CONFIG_CMD_FAT
+
+/* Environment not stored */
+#define CONFIG_ENV_IS_NOWHERE
+#endif /* __CONFIG_H */