TI: DaVinci: Add board specific code for da850 EVM

Provides initial support for TI OMAP-L138/DA850 SoC devices on
a Logic PD EVM board.

Provides:
Initial boot and configuration.
Support for i2c.
UART support (console).

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Acked-by: Ben Gardiner <bengardiner@nanometrics.ca>
Reviewed-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

2 files changed, 112 insertions, 0 deletions

diff --git a/board/davinci/da8xxevm/Makefile b/board/davinci/da8xxevm/Makefile
index 56047dc..17cbe86 100644
--- a/board/davinci/da8xxevm/Makefile
+++ b/board/davinci/da8xxevm/Makefile
@@ -29,6 +29,7 @@ LIB	= $(obj)lib$(BOARD).a
 
 COBJS-y	+= common.o
 COBJS-$(CONFIG_MACH_DAVINCI_DA830_EVM)	+= da830evm.o
+COBJS-$(CONFIG_MACH_DAVINCI_DA850_EVM)	+= da850evm.o
 
 COBJS   := $(COBJS-y)
 
diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c
new file mode 100644
index 0000000..959b2c6
--- /dev/null
+++ b/board/davinci/da8xxevm/da850evm.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Based on da830evm.c. Original Copyrights follow:
+ *
+ * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <asm/arch/hardware.h>
+#include <asm/io.h>
+#include "../common/misc.h"
+#include "common.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define pinmux	(&davinci_syscfg_regs->pinmux)
+
+/* SPI0 pin muxer settings */
+static const struct pinmux_config spi1_pins[] = {
+	{ pinmux[5], 1, 1 },
+	{ pinmux[5], 1, 2 },
+	{ pinmux[5], 1, 4 },
+	{ pinmux[5], 1, 5 }
+};
+
+/* UART pin muxer settings */
+static const struct pinmux_config uart_pins[] = {
+	{ pinmux[0], 4, 6 },
+	{ pinmux[0], 4, 7 },
+	{ pinmux[4], 2, 4 },
+	{ pinmux[4], 2, 5 }
+};
+
+/* I2C pin muxer settings */
+static const struct pinmux_config i2c_pins[] = {
+	{ pinmux[4], 2, 2 },
+	{ pinmux[4], 2, 3 }
+};
+
+static const struct pinmux_resource pinmuxes[] = {
+#ifdef CONFIG_SPI_FLASH
+	PINMUX_ITEM(spi1_pins),
+#endif
+	PINMUX_ITEM(uart_pins),
+	PINMUX_ITEM(i2c_pins),
+};
+
+static const struct lpsc_resource lpsc[] = {
+	{ DAVINCI_LPSC_AEMIF },	/* NAND, NOR */
+	{ DAVINCI_LPSC_SPI1 },	/* Serial Flash */
+	{ DAVINCI_LPSC_EMAC },	/* image download */
+	{ DAVINCI_LPSC_UART2 },	/* console */
+	{ DAVINCI_LPSC_GPIO },
+};
+
+int board_init(void)
+{
+#ifndef CONFIG_USE_IRQ
+	irq_init();
+#endif
+
+	/* arch number of the board */
+	gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM;
+
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
+
+	/*
+	 * Power on required peripherals
+	 * ARM does not have access by default to PSC0 and PSC1
+	 * assuming here that the DSP bootloader has set the IOPU
+	 * such that PSC access is available to ARM
+	 */
+	if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
+		return 1;
+
+	/* setup the SUSPSRC for ARM to control emulation suspend */
+	writel(readl(&davinci_syscfg_regs->suspsrc) &
+	       ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
+		 DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
+		 DAVINCI_SYSCFG_SUSPSRC_UART2),
+	       &davinci_syscfg_regs->suspsrc);
+
+	/* configure pinmux settings */
+	if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
+		return 1;
+
+	/* enable the console UART */
+	writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
+		DAVINCI_UART_PWREMU_MGMT_UTRST),
+	       &davinci_uart2_ctrl_regs->pwremu_mgmt);
+
+	return 0;
+}