ARMV7: Add support For Logic OMAP35x/DM37x modules

This patch adds basic support for OMAP35x/DM37x SOM LV/Torpedo
reference boards. It assumes U-boot is loaded to SDRAM with the
help of another small bootloader (x-load) running from SRAM.

Signed-off-by: Peter Barada <peter.barada@logicpd.com>
Cc: Tom Rini <tom.rini@gmail.com>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Wolfgang Denk <wd@denx.de>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>

1 files changed, 247 insertions, 0 deletions

diff --git a/board/logicpd/omap3som/omap3logic.c b/board/logicpd/omap3som/omap3logic.c
new file mode 100644
index 0000000000..4f5fa8d25f
--- /dev/null
+++ b/board/logicpd/omap3som/omap3logic.c
@@ -0,0 +1,247 @@
+/*
+ * (C) Copyright 2011
+ * Logic Product Development <www.logicpd.com>
+ *
+ * Author :
+ *	Peter Barada <peter.barada@logicpd.com>
+ *
+ * Derived from Beagle Board and 3430 SDP code by
+ *	Richard Woodruff <r-woodruff2@ti.com>
+ *	Syed Mohammed Khasim <khasim@ti.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 <netdev.h>
+#include <flash.h>
+#include <nand.h>
+#include <i2c.h>
+#include <twl4030.h>
+#include <asm/io.h>
+#include <asm/arch/mmc_host_def.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/mem.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+#include <asm/mach-types.h>
+#include "omap3logic.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * two dimensional array of strucures containining board name and Linux
+ * machine IDs; row it selected based on CPU column is slected based
+ * on hsusb0_data5 pin having a pulldown resistor
+ */
+static struct board_id {
+	char *name;
+	int machine_id;
+} boards[2][2] = {
+	{
+		{
+			.name		= "OMAP35xx SOM LV",
+			.machine_id	= MACH_TYPE_OMAP3530_LV_SOM,
+		},
+		{
+			.name		= "OMAP35xx Torpedo",
+			.machine_id	= MACH_TYPE_OMAP3_TORPEDO,
+		},
+	},
+	{
+		{
+			.name		= "DM37xx SOM LV",
+			.machine_id	= MACH_TYPE_DM3730_SOM_LV,
+		},
+		{
+			.name		= "DM37xx Torpedo",
+			.machine_id	= MACH_TYPE_DM3730_TORPEDO,
+		},
+	},
+};
+
+/*
+ * BOARD_ID_GPIO - GPIO of pin with optional pulldown resistor on SOM LV
+ */
+#define BOARD_ID_GPIO	189 /* hsusb0_data5 pin */
+
+/*
+ * Routine: board_init
+ * Description: Early hardware init.
+ */
+int board_init(void)
+{
+	struct board_id *board;
+	unsigned int val;
+
+	gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
+
+	/* boot param addr */
+	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
+
+	/*
+	 * To identify between a SOM LV and Torpedo module,
+	 * a pulldown resistor is on hsusb0_data5 for the SOM LV module.
+	 * Drive the pin (and let it soak), then read it back.
+	 * If the pin is still high its a Torpedo.  If low its a SOM LV
+	 */
+
+	/* Mux hsusb0_data5 as a GPIO */
+	MUX_VAL(CP(HSUSB0_DATA5),	(IEN  | PTD | DIS | M4));
+
+	if (gpio_request(BOARD_ID_GPIO, "husb0_data5.gpio_189") == 0) {
+
+		/*
+		 * Drive BOARD_ID_GPIO - the pulldown resistor on the SOM LV
+		 * will drain the voltage.
+		 */
+		gpio_direction_output(BOARD_ID_GPIO, 0);
+		gpio_set_value(BOARD_ID_GPIO, 1);
+
+		/* Let it soak for a bit */
+		sdelay(0x100);
+
+		/*
+		 * Read state of BOARD_ID_GPIO as an input and if its set.
+		 * If so the board is a Torpedo
+		 */
+		gpio_direction_input(BOARD_ID_GPIO);
+		val = gpio_get_value(BOARD_ID_GPIO);
+		gpio_free(BOARD_ID_GPIO);
+
+		board = &boards[!!(get_cpu_family() == CPU_OMAP36XX)][!!val];
+		printf("Board: %s\n", board->name);
+
+		/* Set the machine_id passed to Linux */
+		gd->bd->bi_arch_number = board->machine_id;
+	}
+
+	/* restore hsusb0_data5 pin as hsusb0_data5 */
+	MUX_VAL(CP(HSUSB0_DATA5),	(IEN  | PTD | DIS | M0));
+
+	return 0;
+}
+
+#if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
+int board_mmc_init(bd_t *bis)
+{
+	return omap_mmc_init(0);
+}
+#endif
+
+/*
+ * Routine: misc_init_r
+ * Description: display die ID register
+ */
+int misc_init_r(void)
+{
+	dieid_num_r();
+
+	return 0;
+}
+
+#ifdef CONFIG_SMC911X
+/* GPMC CS1 settings for Logic SOM LV/Torpedo LAN92xx Ethernet chip */
+static const u32 gpmc_lan92xx_config[] = {
+	NET_LAN92XX_GPMC_CONFIG1,
+	NET_LAN92XX_GPMC_CONFIG2,
+	NET_LAN92XX_GPMC_CONFIG3,
+	NET_LAN92XX_GPMC_CONFIG4,
+	NET_LAN92XX_GPMC_CONFIG5,
+	NET_LAN92XX_GPMC_CONFIG6,
+};
+
+int board_eth_init(bd_t *bis)
+{
+	enable_gpmc_cs_config(gpmc_lan92xx_config, &gpmc_cfg->cs[1],
+			CONFIG_SMC911X_BASE, GPMC_SIZE_16M);
+
+	return smc911x_initialize(0, CONFIG_SMC911X_BASE);
+}
+#endif
+
+/*
+ * IEN  - Input Enable
+ * IDIS - Input Disable
+ * PTD  - Pull type Down
+ * PTU  - Pull type Up
+ * DIS  - Pull type selection is inactive
+ * EN   - Pull type selection is active
+ * M0   - Mode 0
+ * The commented string gives the final mux configuration for that pin
+ */
+
+/*
+ * Routine: set_muxconf_regs
+ * Description: Setting up the configuration Mux registers specific to the
+ *		hardware. Many pins need to be moved from protect to primary
+ *		mode.
+ */
+void set_muxconf_regs(void)
+{
+	/*GPMC*/
+	MUX_VAL(CP(GPMC_A1),		(IDIS | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_A2),		(IDIS | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_A3),		(IDIS | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_A4),		(IDIS | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_A5),		(IDIS | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_D8),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_D9),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_D10),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_D11),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_D12),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_D13),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_D14),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_D15),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_NCS0),		(IDIS | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_NCS3),		(IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_NCS5),          (IDIS | PTU | DIS | M4));
+	MUX_VAL(CP(GPMC_NCS7),		(IDIS | PTD | DIS | M1)); /*GPMC_IO_DIR*/
+	MUX_VAL(CP(GPMC_NBE0_CLE),	(IDIS | PTU | EN  | M0));
+	MUX_VAL(CP(GPMC_WAIT1),		(IEN  | PTU | EN  | M0));
+
+	/*Expansion card  */
+	MUX_VAL(CP(MMC1_CLK),		(IDIS | PTU | EN  | M0));
+	MUX_VAL(CP(MMC1_CMD),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(MMC1_DAT0),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(MMC1_DAT1),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(MMC1_DAT2),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(MMC1_DAT3),		(IEN  | PTU | EN  | M0));
+
+	/* Serial Console */
+	MUX_VAL(CP(UART1_TX),		(IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(UART1_RTS),		(IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(UART1_CTS),		(IEN  | PTU | DIS | M0));
+	MUX_VAL(CP(UART1_RX),		(IEN  | PTD | DIS | M0));
+
+	/* I2C */
+	MUX_VAL(CP(I2C2_SCL),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(I2C2_SDA),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(I2C3_SCL),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(I2C3_SDA),		(IEN  | PTU | EN  | M0));
+
+	MUX_VAL(CP(HDQ_SIO),		(IEN  | PTU | EN  | M0));
+
+	/*Control and debug */
+	MUX_VAL(CP(SYS_NIRQ),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(SYS_OFF_MODE),	(IEN  | PTD | DIS | M0));
+	MUX_VAL(CP(SYS_CLKOUT1),	(IEN  | PTD | DIS | M0));
+	MUX_VAL(CP(SYS_CLKOUT2),	(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(JTAG_nTRST),		(IEN  | PTD | DIS | M0));
+	MUX_VAL(CP(SDRC_CKE0),		(IDIS | PTU | EN  | M0));
+}