board/davinci/ea20/ea20.c - filogic/uboot - Gitiles

 /*
  * (C) Copyright 2010
  * Stefano Babic, DENX Software Engineering, sbabic@denx.de
  *
  * Based on da850evm.c, original Copyrights follow:
  *
  * 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>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

 #include <common.h>
 #include <i2c.h>
 #include <net.h>
 #include <netdev.h>
 #include <asm/arch/hardware.h>
 #include <asm/ti-common/davinci_nand.h>
 #include <asm/arch/emac_defs.h>
 #include <asm/io.h>
 #include <asm/arch/davinci_misc.h>
 #include <asm/gpio.h>
 #include "../../../drivers/video/da8xx-fb.h"

 DECLARE_GLOBAL_DATA_PTR;

 static const struct da8xx_panel lcd_panel = {
 	/* Casio COM57H531x */
 	.name = "Casio_COM57H531x",
 	.width = 640,
 	.height = 480,
 	.hfp = 12,
 	.hbp = 144,
 	.hsw = 30,
 	.vfp = 10,
 	.vbp = 35,
 	.vsw = 3,
 	.pxl_clk = 25000000,
 	.invert_pxl_clk = 0,
 };

 static const struct display_panel disp_panel = {
 	QVGA,
 	16,
 	16,
 	COLOR_ACTIVE,
 };

 static const struct lcd_ctrl_config lcd_cfg = {
 	&disp_panel,
 	.ac_bias		= 255,
 	.ac_bias_intrpt		= 0,
 	.dma_burst_sz		= 16,
 	.bpp			= 16,
 	.fdd			= 255,
 	.tft_alt_mode		= 0,
 	.stn_565_mode		= 0,
 	.mono_8bit_mode		= 0,
 	.invert_line_clock	= 1,
 	.invert_frm_clock	= 1,
 	.sync_edge		= 0,
 	.sync_ctrl		= 1,
 	.raster_order		= 0,
 };

 /* 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 }
 };

 /* I2C pin muxer settings */
 static const struct pinmux_config i2c_pins[] = {
 	{ pinmux(4), 2, 2 },
 	{ pinmux(4), 2, 3 }
 };

 /* UART0 pin muxer settings */
 static const struct pinmux_config uart_pins[] = {
 	{ pinmux(3), 2, 7 },
 	{ pinmux(3), 2, 6 },
 	{ pinmux(3), 2, 4 },
 	{ pinmux(3), 2, 5 }
 };

 #ifdef CONFIG_DRIVER_TI_EMAC
 #define HAS_RMII 1
 static const struct pinmux_config emac_pins[] = {
 	{ pinmux(14), 8, 2 },
 	{ pinmux(14), 8, 3 },
 	{ pinmux(14), 8, 4 },
 	{ pinmux(14), 8, 5 },
 	{ pinmux(14), 8, 6 },
 	{ pinmux(14), 8, 7 },
 	{ pinmux(15), 8, 1 },
 	{ pinmux(4), 8, 0 },
 	{ pinmux(4), 8, 1 }
 };
 #endif

 #ifdef CONFIG_NAND_DAVINCI
 const struct pinmux_config nand_pins[] = {
 	{ pinmux(7), 1, 0},	/* CS2 */
 	{ pinmux(7), 0, 1},	/* CS3  in three state*/
 	{ pinmux(7), 1, 4 },	/* EMA_WE */
 	{ pinmux(7), 1, 5 },	/* EMA_OE */
 	{ pinmux(9), 1, 0 },	/* EMA_D[7] */
 	{ pinmux(9), 1, 1 },	/* EMA_D[6] */
 	{ pinmux(9), 1, 2 },	/* EMA_D[5] */
 	{ pinmux(9), 1, 3 },	/* EMA_D[4] */
 	{ pinmux(9), 1, 4 },	/* EMA_D[3] */
 	{ pinmux(9), 1, 5 },	/* EMA_D[2] */
 	{ pinmux(9), 1, 6 },	/* EMA_D[1] */
 	{ pinmux(9), 1, 7 },	/* EMA_D[0] */
 	{ pinmux(12), 1, 5 },	/* EMA_A[2] */
 	{ pinmux(12), 1, 6 },	/* EMA_A[1] */
 	{ pinmux(6), 1, 0 }	/* EMA_CLK */
 };
 #endif

 const struct pinmux_config gpio_pins[] = {
 	{ pinmux(13), 8, 0 }, /* GPIO6[15] RESETOUTn on SOM*/
 	{ pinmux(13), 8, 5 }, /* GPIO6[10] U0_SW0 on EA20-00101_2*/
 	{ pinmux(13), 8, 3 }, /* GPIO6[12] U0_SW1 on EA20-00101_2*/
 	{ pinmux(19), 8, 5 }, /* GPIO6[1]  DISP_ON */
 	{ pinmux(14), 8, 1 }  /* GPIO6[6]  LCD_B_PWR*/
 };

 const struct pinmux_config lcd_pins[] = {
 	{ pinmux(17), 2, 1 }, /* LCD_D_0 */
 	{ pinmux(17), 2, 0 }, /* LCD_D_1 */
 	{ pinmux(16), 2, 7 }, /* LCD_D_2 */
 	{ pinmux(16), 2, 6 }, /* LCD_D_3 */
 	{ pinmux(16), 2, 5 }, /* LCD_D_4 */
 	{ pinmux(16), 2, 4 }, /* LCD_D_5 */
 	{ pinmux(16), 2, 3 }, /* LCD_D_6 */
 	{ pinmux(16), 2, 2 }, /* LCD_D_7 */
 	{ pinmux(18), 2, 1 }, /* LCD_D_8 */
 	{ pinmux(18), 2, 0 }, /* LCD_D_9 */
 	{ pinmux(17), 2, 7 }, /* LCD_D_10 */
 	{ pinmux(17), 2, 6 }, /* LCD_D_11 */
 	{ pinmux(17), 2, 5 }, /* LCD_D_12 */
 	{ pinmux(17), 2, 4 }, /* LCD_D_13 */
 	{ pinmux(17), 2, 3 }, /* LCD_D_14 */
 	{ pinmux(17), 2, 2 }, /* LCD_D_15 */
 	{ pinmux(18), 2, 6 }, /* LCD_PCLK */
 	{ pinmux(19), 2, 0 }, /* LCD_HSYNC */
 	{ pinmux(19), 2, 1 }, /* LCD_VSYNC */
 	{ pinmux(19), 2, 6 }, /* DA850_NLCD_AC_ENB_CS */
 };

 const struct pinmux_config halten_pin[] = {
 	{ pinmux(3),  4, 2 } /* GPIO8[6] HALTEN */
 };

 static const struct pinmux_resource pinmuxes[] = {
 #ifdef CONFIG_SPI_FLASH
 	PINMUX_ITEM(spi1_pins),
 #endif
 	PINMUX_ITEM(uart_pins),
 	PINMUX_ITEM(i2c_pins),
 #ifdef CONFIG_NAND_DAVINCI
 	PINMUX_ITEM(nand_pins),
 #endif
 #ifdef CONFIG_VIDEO
 	PINMUX_ITEM(lcd_pins),
 #endif
 };

 static const struct lpsc_resource lpsc[] = {
 	{ DAVINCI_LPSC_AEMIF },	/* NAND, NOR */
 	{ DAVINCI_LPSC_SPI1 },	/* Serial Flash */
 	{ DAVINCI_LPSC_EMAC },	/* image download */
 	{ DAVINCI_LPSC_UART0 },	/* console */
 	{ DAVINCI_LPSC_GPIO },
 	{ DAVINCI_LPSC_LCDC }, /* LCD */
 };

 int board_early_init_f(void)
 {
 	/* PinMux for GPIO */
 	if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
 		return 1;

 	/* Set DISP_ON high to enable LCD output*/
 	gpio_direction_output(97, 1);

 	/* Set the RESETOUTn low */
 	gpio_direction_output(111, 0);

 	/* Set U0_SW0 low for UART0 as console*/
 	gpio_direction_output(106, 0);

 	/* Set U0_SW1 low for UART0 as console*/
 	gpio_direction_output(108, 0);

 	/* Set LCD_B_PWR low to power down LCD Backlight*/
 	gpio_direction_output(102, 0);

 	irq_init();

 	/*
 	 * NAND CS setup - cycle counts based on da850evm NAND timings in the
 	 * Linux kernel @ 25MHz EMIFA
 	 */
 #ifdef CONFIG_NAND_DAVINCI
 	writel((DAVINCI_ABCR_WSETUP(0) |
 		DAVINCI_ABCR_WSTROBE(1) |
 		DAVINCI_ABCR_WHOLD(0) |
 		DAVINCI_ABCR_RSETUP(0) |
 		DAVINCI_ABCR_RSTROBE(1) |
 		DAVINCI_ABCR_RHOLD(0) |
 		DAVINCI_ABCR_TA(0) |
 		DAVINCI_ABCR_ASIZE_8BIT),
 	       &davinci_emif_regs->ab1cr); /* CS2 */
 #endif

 	/*
 	 * 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_UART0),
 	       &davinci_syscfg_regs->suspsrc);

 	/* configure pinmux settings */
 	if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
 		return 1;

 #ifdef CONFIG_DRIVER_TI_EMAC
 	if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0)
 		return 1;

 	davinci_emac_mii_mode_sel(HAS_RMII);
 #endif /* CONFIG_DRIVER_TI_EMAC */

 	/* enable the console UART */
 	writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
 		DAVINCI_UART_PWREMU_MGMT_UTRST),
 	       &davinci_uart0_ctrl_regs->pwremu_mgmt);

 	/*
 	 * Reconfigure the LCDC priority to the highest to ensure that
 	 * the throughput/latency requirements for the LCDC are met.
 	 */
 	writel(readl(&davinci_syscfg_regs->mstpri[2]) & 0x0fffffff,
 	       &davinci_syscfg_regs->mstpri[2]);


 	return 0;
 }

 /*
  * Do not overwrite the console
  * Use always serial for U-Boot console
  */
 int overwrite_console(void)
 {
 	return 1;
 }

 int board_init(void)
 {
 	/* arch number of the board */
 	gd->bd->bi_arch_number = MACH_TYPE_EA20;

 	/* address of boot parameters */
 	gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;

 	da8xx_video_init(&lcd_panel, &lcd_cfg, 16);

 	return 0;
 }

 #ifdef CONFIG_BOARD_LATE_INIT

 int board_late_init(void)
 {
 	unsigned char buf[2];
 	int ret;

 	/* PinMux for HALTEN */
 	if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0)
 		return 1;

 	/* Set HALTEN to high */
 	gpio_direction_output(134, 1);

 	/* Set fixed contrast settings for LCD via I2C potentiometer */
 	buf[0] = 0x00;
 	buf[1] = 0xd7;
 	ret = i2c_write(0x2e, 6, 1, buf, 2);
 	if (ret)
 		puts("\nContrast Settings FAILED\n");

 	/* Set LCD_B_PWR high to power up LCD Backlight*/
 	gpio_set_value(102, 1);
 	return 0;
 }
 #endif /* CONFIG_BOARD_LATE_INIT */

 #ifdef CONFIG_DRIVER_TI_EMAC

 /*
  * Initializes on-board ethernet controllers.
  */
 int board_eth_init(bd_t *bis)
 {
 	if (!davinci_emac_initialize()) {
 		printf("Error: Ethernet init failed!\n");
 		return -1;
 	}

 	/*
 	 * This board has a RMII PHY. However, the MDC line on the SOM
 	 * must not be disabled (there is no MII PHY on the
 	 * baseboard) via the GPIO2[6], because this pin
 	 * disables at the same time the SPI flash.
 	 */

 	return 0;
 }
 #endif /* CONFIG_DRIVER_TI_EMAC */
	/*
	* (C) Copyright 2010
	* Stefano Babic, DENX Software Engineering, sbabic@denx.de
	*
	* Based on da850evm.c, original Copyrights follow:
	*
	* 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>
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/

	#include <common.h>
	#include <i2c.h>
	#include <net.h>
	#include <netdev.h>
	#include <asm/arch/hardware.h>
	#include <asm/ti-common/davinci_nand.h>
	#include <asm/arch/emac_defs.h>
	#include <asm/io.h>
	#include <asm/arch/davinci_misc.h>
	#include <asm/gpio.h>
	#include "../../../drivers/video/da8xx-fb.h"

	DECLARE_GLOBAL_DATA_PTR;

	static const struct da8xx_panel lcd_panel = {
	/* Casio COM57H531x */
	.name = "Casio_COM57H531x",
	.width = 640,
	.height = 480,
	.hfp = 12,
	.hbp = 144,
	.hsw = 30,
	.vfp = 10,
	.vbp = 35,
	.vsw = 3,
	.pxl_clk = 25000000,
	.invert_pxl_clk = 0,
	};

	static const struct display_panel disp_panel = {
	QVGA,
	16,
	16,
	COLOR_ACTIVE,
	};

	static const struct lcd_ctrl_config lcd_cfg = {
	&disp_panel,
	.ac_bias = 255,
	.ac_bias_intrpt = 0,
	.dma_burst_sz = 16,
	.bpp = 16,
	.fdd = 255,
	.tft_alt_mode = 0,
	.stn_565_mode = 0,
	.mono_8bit_mode = 0,
	.invert_line_clock = 1,
	.invert_frm_clock = 1,
	.sync_edge = 0,
	.sync_ctrl = 1,
	.raster_order = 0,
	};

	/* 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 }
	};

	/* I2C pin muxer settings */
	static const struct pinmux_config i2c_pins[] = {
	{ pinmux(4), 2, 2 },
	{ pinmux(4), 2, 3 }
	};

	/* UART0 pin muxer settings */
	static const struct pinmux_config uart_pins[] = {
	{ pinmux(3), 2, 7 },
	{ pinmux(3), 2, 6 },
	{ pinmux(3), 2, 4 },
	{ pinmux(3), 2, 5 }
	};

	#ifdef CONFIG_DRIVER_TI_EMAC
	#define HAS_RMII 1
	static const struct pinmux_config emac_pins[] = {
	{ pinmux(14), 8, 2 },
	{ pinmux(14), 8, 3 },
	{ pinmux(14), 8, 4 },
	{ pinmux(14), 8, 5 },
	{ pinmux(14), 8, 6 },
	{ pinmux(14), 8, 7 },
	{ pinmux(15), 8, 1 },
	{ pinmux(4), 8, 0 },
	{ pinmux(4), 8, 1 }
	};
	#endif

	#ifdef CONFIG_NAND_DAVINCI
	const struct pinmux_config nand_pins[] = {
	{ pinmux(7), 1, 0}, /* CS2 */
	{ pinmux(7), 0, 1}, /* CS3 in three state*/
	{ pinmux(7), 1, 4 }, /* EMA_WE */
	{ pinmux(7), 1, 5 }, /* EMA_OE */
	{ pinmux(9), 1, 0 }, /* EMA_D[7] */
	{ pinmux(9), 1, 1 }, /* EMA_D[6] */
	{ pinmux(9), 1, 2 }, /* EMA_D[5] */
	{ pinmux(9), 1, 3 }, /* EMA_D[4] */
	{ pinmux(9), 1, 4 }, /* EMA_D[3] */
	{ pinmux(9), 1, 5 }, /* EMA_D[2] */
	{ pinmux(9), 1, 6 }, /* EMA_D[1] */
	{ pinmux(9), 1, 7 }, /* EMA_D[0] */
	{ pinmux(12), 1, 5 }, /* EMA_A[2] */
	{ pinmux(12), 1, 6 }, /* EMA_A[1] */
	{ pinmux(6), 1, 0 } /* EMA_CLK */
	};
	#endif

	const struct pinmux_config gpio_pins[] = {
	{ pinmux(13), 8, 0 }, /* GPIO6[15] RESETOUTn on SOM*/
	{ pinmux(13), 8, 5 }, /* GPIO6[10] U0_SW0 on EA20-00101_2*/
	{ pinmux(13), 8, 3 }, /* GPIO6[12] U0_SW1 on EA20-00101_2*/
	{ pinmux(19), 8, 5 }, /* GPIO6[1] DISP_ON */
	{ pinmux(14), 8, 1 } /* GPIO6[6] LCD_B_PWR*/
	};

	const struct pinmux_config lcd_pins[] = {
	{ pinmux(17), 2, 1 }, /* LCD_D_0 */
	{ pinmux(17), 2, 0 }, /* LCD_D_1 */
	{ pinmux(16), 2, 7 }, /* LCD_D_2 */
	{ pinmux(16), 2, 6 }, /* LCD_D_3 */
	{ pinmux(16), 2, 5 }, /* LCD_D_4 */
	{ pinmux(16), 2, 4 }, /* LCD_D_5 */
	{ pinmux(16), 2, 3 }, /* LCD_D_6 */
	{ pinmux(16), 2, 2 }, /* LCD_D_7 */
	{ pinmux(18), 2, 1 }, /* LCD_D_8 */
	{ pinmux(18), 2, 0 }, /* LCD_D_9 */
	{ pinmux(17), 2, 7 }, /* LCD_D_10 */
	{ pinmux(17), 2, 6 }, /* LCD_D_11 */
	{ pinmux(17), 2, 5 }, /* LCD_D_12 */
	{ pinmux(17), 2, 4 }, /* LCD_D_13 */
	{ pinmux(17), 2, 3 }, /* LCD_D_14 */
	{ pinmux(17), 2, 2 }, /* LCD_D_15 */
	{ pinmux(18), 2, 6 }, /* LCD_PCLK */
	{ pinmux(19), 2, 0 }, /* LCD_HSYNC */
	{ pinmux(19), 2, 1 }, /* LCD_VSYNC */
	{ pinmux(19), 2, 6 }, /* DA850_NLCD_AC_ENB_CS */
	};

	const struct pinmux_config halten_pin[] = {
	{ pinmux(3), 4, 2 } /* GPIO8[6] HALTEN */
	};

	static const struct pinmux_resource pinmuxes[] = {
	#ifdef CONFIG_SPI_FLASH
	PINMUX_ITEM(spi1_pins),
	#endif
	PINMUX_ITEM(uart_pins),
	PINMUX_ITEM(i2c_pins),
	#ifdef CONFIG_NAND_DAVINCI
	PINMUX_ITEM(nand_pins),
	#endif
	#ifdef CONFIG_VIDEO
	PINMUX_ITEM(lcd_pins),
	#endif
	};

	static const struct lpsc_resource lpsc[] = {
	{ DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
	{ DAVINCI_LPSC_SPI1 }, /* Serial Flash */
	{ DAVINCI_LPSC_EMAC }, /* image download */
	{ DAVINCI_LPSC_UART0 }, /* console */
	{ DAVINCI_LPSC_GPIO },
	{ DAVINCI_LPSC_LCDC }, /* LCD */
	};

	int board_early_init_f(void)
	{
	/* PinMux for GPIO */
	if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
	return 1;

	/* Set DISP_ON high to enable LCD output*/
	gpio_direction_output(97, 1);

	/* Set the RESETOUTn low */
	gpio_direction_output(111, 0);

	/* Set U0_SW0 low for UART0 as console*/
	gpio_direction_output(106, 0);

	/* Set U0_SW1 low for UART0 as console*/
	gpio_direction_output(108, 0);

	/* Set LCD_B_PWR low to power down LCD Backlight*/
	gpio_direction_output(102, 0);

	irq_init();

	/*
	* NAND CS setup - cycle counts based on da850evm NAND timings in the
	* Linux kernel @ 25MHz EMIFA
	*/
	#ifdef CONFIG_NAND_DAVINCI
	writel((DAVINCI_ABCR_WSETUP(0) \|
	DAVINCI_ABCR_WSTROBE(1) \|
	DAVINCI_ABCR_WHOLD(0) \|
	DAVINCI_ABCR_RSETUP(0) \|
	DAVINCI_ABCR_RSTROBE(1) \|
	DAVINCI_ABCR_RHOLD(0) \|
	DAVINCI_ABCR_TA(0) \|
	DAVINCI_ABCR_ASIZE_8BIT),
	&davinci_emif_regs->ab1cr); /* CS2 */
	#endif

	/*
	* 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_UART0),
	&davinci_syscfg_regs->suspsrc);

	/* configure pinmux settings */
	if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
	return 1;

	#ifdef CONFIG_DRIVER_TI_EMAC
	if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0)
	return 1;

	davinci_emac_mii_mode_sel(HAS_RMII);
	#endif /* CONFIG_DRIVER_TI_EMAC */

	/* enable the console UART */
	writel((DAVINCI_UART_PWREMU_MGMT_FREE \| DAVINCI_UART_PWREMU_MGMT_URRST \|
	DAVINCI_UART_PWREMU_MGMT_UTRST),
	&davinci_uart0_ctrl_regs->pwremu_mgmt);

	/*
	* Reconfigure the LCDC priority to the highest to ensure that
	* the throughput/latency requirements for the LCDC are met.
	*/
	writel(readl(&davinci_syscfg_regs->mstpri[2]) & 0x0fffffff,
	&davinci_syscfg_regs->mstpri[2]);


	return 0;
	}

	/*
	* Do not overwrite the console
	* Use always serial for U-Boot console
	*/
	int overwrite_console(void)
	{
	return 1;
	}

	int board_init(void)
	{
	/* arch number of the board */
	gd->bd->bi_arch_number = MACH_TYPE_EA20;

	/* address of boot parameters */
	gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;

	da8xx_video_init(&lcd_panel, &lcd_cfg, 16);

	return 0;
	}

	#ifdef CONFIG_BOARD_LATE_INIT

	int board_late_init(void)
	{
	unsigned char buf[2];
	int ret;

	/* PinMux for HALTEN */
	if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0)
	return 1;

	/* Set HALTEN to high */
	gpio_direction_output(134, 1);

	/* Set fixed contrast settings for LCD via I2C potentiometer */
	buf[0] = 0x00;
	buf[1] = 0xd7;
	ret = i2c_write(0x2e, 6, 1, buf, 2);
	if (ret)
	puts("\nContrast Settings FAILED\n");

	/* Set LCD_B_PWR high to power up LCD Backlight*/
	gpio_set_value(102, 1);
	return 0;
	}
	#endif /* CONFIG_BOARD_LATE_INIT */

	#ifdef CONFIG_DRIVER_TI_EMAC

	/*
	* Initializes on-board ethernet controllers.
	*/
	int board_eth_init(bd_t *bis)
	{
	if (!davinci_emac_initialize()) {
	printf("Error: Ethernet init failed!\n");
	return -1;
	}

	/*
	* This board has a RMII PHY. However, the MDC line on the SOM
	* must not be disabled (there is no MII PHY on the
	* baseboard) via the GPIO2[6], because this pin
	* disables at the same time the SPI flash.
	*/

	return 0;
	}
	#endif /* CONFIG_DRIVER_TI_EMAC */