board/ti/am335x/board.c - filogic/uboot - Gitiles

 /*
  * board.c
  *
  * Board functions for TI AM335X based boards
  *
  * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
  *
  * 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.
  */

 #include <common.h>
 #include <errno.h>
 #include <spl.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/omap.h>
 #include <asm/arch/ddr_defs.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/mmc_host_def.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/io.h>
 #include <asm/emif.h>
 #include <asm/gpio.h>
 #include <i2c.h>
 #include <miiphy.h>
 #include <cpsw.h>
 #include "board.h"

 DECLARE_GLOBAL_DATA_PTR;

 static struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE;

 /* MII mode defines */
 #define MII_MODE_ENABLE		0x0
 #define RGMII_MODE_ENABLE	0x3A

 /* GPIO that controls power to DDR on EVM-SK */
 #define GPIO_DDR_VTT_EN		7

 static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;

 static struct am335x_baseboard_id __attribute__((section (".data"))) header;

 static inline int board_is_bone(void)
 {
 	return !strncmp(header.name, "A335BONE", HDR_NAME_LEN);
 }

 static inline int board_is_bone_lt(void)
 {
 	return !strncmp(header.name, "A335BNLT", HDR_NAME_LEN);
 }

 static inline int board_is_evm_sk(void)
 {
 	return !strncmp("A335X_SK", header.name, HDR_NAME_LEN);
 }

 static inline int board_is_idk(void)
 {
 	return !strncmp(header.config, "SKU#02", 6);
 }

 static int __maybe_unused board_is_gp_evm(void)
 {
 	return !strncmp("A33515BB", header.name, 8);
 }

 int board_is_evm_15_or_later(void)
 {
 	return (!strncmp("A33515BB", header.name, 8) &&
 		strncmp("1.5", header.version, 3) <= 0);
 }

 /*
  * Read header information from EEPROM into global structure.
  */
 static int read_eeprom(void)
 {
 	/* Check if baseboard eeprom is available */
 	if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
 		puts("Could not probe the EEPROM; something fundamentally "
 			"wrong on the I2C bus.\n");
 		return -ENODEV;
 	}

 	/* read the eeprom using i2c */
 	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, (uchar *)&header,
 							sizeof(header))) {
 		puts("Could not read the EEPROM; something fundamentally"
 			" wrong on the I2C bus.\n");
 		return -EIO;
 	}

 	if (header.magic != 0xEE3355AA) {
 		/*
 		 * read the eeprom using i2c again,
 		 * but use only a 1 byte address
 		 */
 		if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 1,
 					(uchar *)&header, sizeof(header))) {
 			puts("Could not read the EEPROM; something "
 				"fundamentally wrong on the I2C bus.\n");
 			return -EIO;
 		}

 		if (header.magic != 0xEE3355AA) {
 			printf("Incorrect magic number (0x%x) in EEPROM\n",
 					header.magic);
 			return -EINVAL;
 		}
 	}

 	return 0;
 }

 #ifdef CONFIG_SPL_BUILD
 static const struct ddr_data ddr2_data = {
 	.datardsratio0 = ((MT47H128M16RT25E_RD_DQS<<30) |
 			  (MT47H128M16RT25E_RD_DQS<<20) |
 			  (MT47H128M16RT25E_RD_DQS<<10) |
 			  (MT47H128M16RT25E_RD_DQS<<0)),
 	.datawdsratio0 = ((MT47H128M16RT25E_WR_DQS<<30) |
 			  (MT47H128M16RT25E_WR_DQS<<20) |
 			  (MT47H128M16RT25E_WR_DQS<<10) |
 			  (MT47H128M16RT25E_WR_DQS<<0)),
 	.datawiratio0 = ((MT47H128M16RT25E_PHY_WRLVL<<30) |
 			 (MT47H128M16RT25E_PHY_WRLVL<<20) |
 			 (MT47H128M16RT25E_PHY_WRLVL<<10) |
 			 (MT47H128M16RT25E_PHY_WRLVL<<0)),
 	.datagiratio0 = ((MT47H128M16RT25E_PHY_GATELVL<<30) |
 			 (MT47H128M16RT25E_PHY_GATELVL<<20) |
 			 (MT47H128M16RT25E_PHY_GATELVL<<10) |
 			 (MT47H128M16RT25E_PHY_GATELVL<<0)),
 	.datafwsratio0 = ((MT47H128M16RT25E_PHY_FIFO_WE<<30) |
 			  (MT47H128M16RT25E_PHY_FIFO_WE<<20) |
 			  (MT47H128M16RT25E_PHY_FIFO_WE<<10) |
 			  (MT47H128M16RT25E_PHY_FIFO_WE<<0)),
 	.datawrsratio0 = ((MT47H128M16RT25E_PHY_WR_DATA<<30) |
 			  (MT47H128M16RT25E_PHY_WR_DATA<<20) |
 			  (MT47H128M16RT25E_PHY_WR_DATA<<10) |
 			  (MT47H128M16RT25E_PHY_WR_DATA<<0)),
 	.datauserank0delay = MT47H128M16RT25E_PHY_RANK0_DELAY,
 	.datadldiff0 = PHY_DLL_LOCK_DIFF,
 };

 static const struct cmd_control ddr2_cmd_ctrl_data = {
 	.cmd0csratio = MT47H128M16RT25E_RATIO,
 	.cmd0dldiff = MT47H128M16RT25E_DLL_LOCK_DIFF,
 	.cmd0iclkout = MT47H128M16RT25E_INVERT_CLKOUT,

 	.cmd1csratio = MT47H128M16RT25E_RATIO,
 	.cmd1dldiff = MT47H128M16RT25E_DLL_LOCK_DIFF,
 	.cmd1iclkout = MT47H128M16RT25E_INVERT_CLKOUT,

 	.cmd2csratio = MT47H128M16RT25E_RATIO,
 	.cmd2dldiff = MT47H128M16RT25E_DLL_LOCK_DIFF,
 	.cmd2iclkout = MT47H128M16RT25E_INVERT_CLKOUT,
 };

 static const struct emif_regs ddr2_emif_reg_data = {
 	.sdram_config = MT47H128M16RT25E_EMIF_SDCFG,
 	.ref_ctrl = MT47H128M16RT25E_EMIF_SDREF,
 	.sdram_tim1 = MT47H128M16RT25E_EMIF_TIM1,
 	.sdram_tim2 = MT47H128M16RT25E_EMIF_TIM2,
 	.sdram_tim3 = MT47H128M16RT25E_EMIF_TIM3,
 	.emif_ddr_phy_ctlr_1 = MT47H128M16RT25E_EMIF_READ_LATENCY,
 };

 static const struct ddr_data ddr3_data = {
 	.datardsratio0 = MT41J128MJT125_RD_DQS,
 	.datawdsratio0 = MT41J128MJT125_WR_DQS,
 	.datafwsratio0 = MT41J128MJT125_PHY_FIFO_WE,
 	.datawrsratio0 = MT41J128MJT125_PHY_WR_DATA,
 	.datadldiff0 = PHY_DLL_LOCK_DIFF,
 };

 static const struct ddr_data ddr3_beagleblack_data = {
 	.datardsratio0 = MT41K256M16HA125E_RD_DQS,
 	.datawdsratio0 = MT41K256M16HA125E_WR_DQS,
 	.datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE,
 	.datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA,
 	.datadldiff0 = PHY_DLL_LOCK_DIFF,
 };

 static const struct ddr_data ddr3_evm_data = {
 	.datardsratio0 = MT41J512M8RH125_RD_DQS,
 	.datawdsratio0 = MT41J512M8RH125_WR_DQS,
 	.datafwsratio0 = MT41J512M8RH125_PHY_FIFO_WE,
 	.datawrsratio0 = MT41J512M8RH125_PHY_WR_DATA,
 	.datadldiff0 = PHY_DLL_LOCK_DIFF,
 };

 static const struct cmd_control ddr3_cmd_ctrl_data = {
 	.cmd0csratio = MT41J128MJT125_RATIO,
 	.cmd0dldiff = MT41J128MJT125_DLL_LOCK_DIFF,
 	.cmd0iclkout = MT41J128MJT125_INVERT_CLKOUT,

 	.cmd1csratio = MT41J128MJT125_RATIO,
 	.cmd1dldiff = MT41J128MJT125_DLL_LOCK_DIFF,
 	.cmd1iclkout = MT41J128MJT125_INVERT_CLKOUT,

 	.cmd2csratio = MT41J128MJT125_RATIO,
 	.cmd2dldiff = MT41J128MJT125_DLL_LOCK_DIFF,
 	.cmd2iclkout = MT41J128MJT125_INVERT_CLKOUT,
 };

 static const struct cmd_control ddr3_beagleblack_cmd_ctrl_data = {
 	.cmd0csratio = MT41K256M16HA125E_RATIO,
 	.cmd0dldiff = MT41K256M16HA125E_DLL_LOCK_DIFF,
 	.cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,

 	.cmd1csratio = MT41K256M16HA125E_RATIO,
 	.cmd1dldiff = MT41K256M16HA125E_DLL_LOCK_DIFF,
 	.cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,

 	.cmd2csratio = MT41K256M16HA125E_RATIO,
 	.cmd2dldiff = MT41K256M16HA125E_DLL_LOCK_DIFF,
 	.cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
 };

 static const struct cmd_control ddr3_evm_cmd_ctrl_data = {
 	.cmd0csratio = MT41J512M8RH125_RATIO,
 	.cmd0dldiff = MT41J512M8RH125_DLL_LOCK_DIFF,
 	.cmd0iclkout = MT41J512M8RH125_INVERT_CLKOUT,

 	.cmd1csratio = MT41J512M8RH125_RATIO,
 	.cmd1dldiff = MT41J512M8RH125_DLL_LOCK_DIFF,
 	.cmd1iclkout = MT41J512M8RH125_INVERT_CLKOUT,

 	.cmd2csratio = MT41J512M8RH125_RATIO,
 	.cmd2dldiff = MT41J512M8RH125_DLL_LOCK_DIFF,
 	.cmd2iclkout = MT41J512M8RH125_INVERT_CLKOUT,
 };

 static struct emif_regs ddr3_emif_reg_data = {
 	.sdram_config = MT41J128MJT125_EMIF_SDCFG,
 	.ref_ctrl = MT41J128MJT125_EMIF_SDREF,
 	.sdram_tim1 = MT41J128MJT125_EMIF_TIM1,
 	.sdram_tim2 = MT41J128MJT125_EMIF_TIM2,
 	.sdram_tim3 = MT41J128MJT125_EMIF_TIM3,
 	.zq_config = MT41J128MJT125_ZQ_CFG,
 	.emif_ddr_phy_ctlr_1 = MT41J128MJT125_EMIF_READ_LATENCY |
 				PHY_EN_DYN_PWRDN,
 };

 static struct emif_regs ddr3_beagleblack_emif_reg_data = {
 	.sdram_config = MT41K256M16HA125E_EMIF_SDCFG,
 	.ref_ctrl = MT41K256M16HA125E_EMIF_SDREF,
 	.sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1,
 	.sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2,
 	.sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3,
 	.zq_config = MT41K256M16HA125E_ZQ_CFG,
 	.emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY,
 };

 static struct emif_regs ddr3_evm_emif_reg_data = {
 	.sdram_config = MT41J512M8RH125_EMIF_SDCFG,
 	.ref_ctrl = MT41J512M8RH125_EMIF_SDREF,
 	.sdram_tim1 = MT41J512M8RH125_EMIF_TIM1,
 	.sdram_tim2 = MT41J512M8RH125_EMIF_TIM2,
 	.sdram_tim3 = MT41J512M8RH125_EMIF_TIM3,
 	.zq_config = MT41J512M8RH125_ZQ_CFG,
 	.emif_ddr_phy_ctlr_1 = MT41J512M8RH125_EMIF_READ_LATENCY |
 				PHY_EN_DYN_PWRDN,
 };

 #ifdef CONFIG_SPL_OS_BOOT
 int spl_start_uboot(void)
 {
 	/* break into full u-boot on 'c' */
 	return (serial_tstc() && serial_getc() == 'c');
 }
 #endif

 #endif

 /*
  * early system init of muxing and clocks.
  */
 void s_init(void)
 {
 	/*
 	 * Save the boot parameters passed from romcode.
 	 * We cannot delay the saving further than this,
 	 * to prevent overwrites.
 	 */
 #ifdef CONFIG_SPL_BUILD
 	save_omap_boot_params();
 #endif

 	/* WDT1 is already running when the bootloader gets control
 	 * Disable it to avoid "random" resets
 	 */
 	writel(0xAAAA, &wdtimer->wdtwspr);
 	while (readl(&wdtimer->wdtwwps) != 0x0)
 		;
 	writel(0x5555, &wdtimer->wdtwspr);
 	while (readl(&wdtimer->wdtwwps) != 0x0)
 		;

 #ifdef CONFIG_SPL_BUILD
 	/* Setup the PLLs and the clocks for the peripherals */
 	pll_init();

 	/* Enable RTC32K clock */
 	rtc32k_enable();

 #ifdef CONFIG_SERIAL1
 	enable_uart0_pin_mux();
 #endif /* CONFIG_SERIAL1 */
 #ifdef CONFIG_SERIAL2
 	enable_uart1_pin_mux();
 #endif /* CONFIG_SERIAL2 */
 #ifdef CONFIG_SERIAL3
 	enable_uart2_pin_mux();
 #endif /* CONFIG_SERIAL3 */
 #ifdef CONFIG_SERIAL4
 	enable_uart3_pin_mux();
 #endif /* CONFIG_SERIAL4 */
 #ifdef CONFIG_SERIAL5
 	enable_uart4_pin_mux();
 #endif /* CONFIG_SERIAL5 */
 #ifdef CONFIG_SERIAL6
 	enable_uart5_pin_mux();
 #endif /* CONFIG_SERIAL6 */

 	uart_soft_reset();

 	gd = &gdata;

 	preloader_console_init();

 	/* Initalize the board header */
 	enable_i2c0_pin_mux();
 	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 	if (read_eeprom() < 0)
 		puts("Could not get board ID.\n");

 	enable_board_pin_mux(&header);
 	if (board_is_evm_sk()) {
 		/*
 		 * EVM SK 1.2A and later use gpio0_7 to enable DDR3.
 		 * This is safe enough to do on older revs.
 		 */
 		gpio_request(GPIO_DDR_VTT_EN, "ddr_vtt_en");
 		gpio_direction_output(GPIO_DDR_VTT_EN, 1);
 	}

 	if (board_is_evm_sk())
 		config_ddr(303, MT41J128MJT125_IOCTRL_VALUE, &ddr3_data,
 			   &ddr3_cmd_ctrl_data, &ddr3_emif_reg_data, 0);
 	else if (board_is_bone_lt())
 		config_ddr(400, MT41K256M16HA125E_IOCTRL_VALUE,
 			   &ddr3_beagleblack_data,
 			   &ddr3_beagleblack_cmd_ctrl_data,
 			   &ddr3_beagleblack_emif_reg_data, 0);
 	else if (board_is_evm_15_or_later())
 		config_ddr(303, MT41J512M8RH125_IOCTRL_VALUE, &ddr3_evm_data,
 			   &ddr3_evm_cmd_ctrl_data, &ddr3_evm_emif_reg_data, 0);
 	else
 		config_ddr(266, MT47H128M16RT25E_IOCTRL_VALUE, &ddr2_data,
 			   &ddr2_cmd_ctrl_data, &ddr2_emif_reg_data, 0);
 #endif
 }

 /*
  * Basic board specific setup.  Pinmux has been handled already.
  */
 int board_init(void)
 {
 	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 	if (read_eeprom() < 0)
 		puts("Could not get board ID.\n");

 	gd->bd->bi_boot_params = PHYS_DRAM_1 + 0x100;

 	gpmc_init();

 	return 0;
 }

 #ifdef CONFIG_BOARD_LATE_INIT
 int board_late_init(void)
 {
 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 	char safe_string[HDR_NAME_LEN + 1];

 	/* Now set variables based on the header. */
 	strncpy(safe_string, (char *)header.name, sizeof(header.name));
 	safe_string[sizeof(header.name)] = 0;
 	setenv("board_name", safe_string);

 	strncpy(safe_string, (char *)header.version, sizeof(header.version));
 	safe_string[sizeof(header.version)] = 0;
 	setenv("board_rev", safe_string);
 #endif

 	return 0;
 }
 #endif

 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
 	(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
 static void cpsw_control(int enabled)
 {
 	/* VTP can be added here */

 	return;
 }

 static struct cpsw_slave_data cpsw_slaves[] = {
 	{
 		.slave_reg_ofs	= 0x208,
 		.sliver_reg_ofs	= 0xd80,
 		.phy_id		= 0,
 	},
 	{
 		.slave_reg_ofs	= 0x308,
 		.sliver_reg_ofs	= 0xdc0,
 		.phy_id		= 1,
 	},
 };

 static struct cpsw_platform_data cpsw_data = {
 	.mdio_base		= CPSW_MDIO_BASE,
 	.cpsw_base		= CPSW_BASE,
 	.mdio_div		= 0xff,
 	.channels		= 8,
 	.cpdma_reg_ofs		= 0x800,
 	.slaves			= 1,
 	.slave_data		= cpsw_slaves,
 	.ale_reg_ofs		= 0xd00,
 	.ale_entries		= 1024,
 	.host_port_reg_ofs	= 0x108,
 	.hw_stats_reg_ofs	= 0x900,
 	.mac_control		= (1 << 5),
 	.control		= cpsw_control,
 	.host_port_num		= 0,
 	.version		= CPSW_CTRL_VERSION_2,
 };
 #endif

 #if defined(CONFIG_DRIVER_TI_CPSW) || \
 	(defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
 int board_eth_init(bd_t *bis)
 {
 	int rv, n = 0;
 	uint8_t mac_addr[6];
 	uint32_t mac_hi, mac_lo;

 	/* try reading mac address from efuse */
 	mac_lo = readl(&cdev->macid0l);
 	mac_hi = readl(&cdev->macid0h);
 	mac_addr[0] = mac_hi & 0xFF;
 	mac_addr[1] = (mac_hi & 0xFF00) >> 8;
 	mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
 	mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
 	mac_addr[4] = mac_lo & 0xFF;
 	mac_addr[5] = (mac_lo & 0xFF00) >> 8;

 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
 	(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
 	if (!getenv("ethaddr")) {
 		printf("<ethaddr> not set. Validating first E-fuse MAC\n");

 		if (is_valid_ether_addr(mac_addr))
 			eth_setenv_enetaddr("ethaddr", mac_addr);
 	}

 #ifdef CONFIG_DRIVER_TI_CPSW
 	if (board_is_bone() || board_is_bone_lt() || board_is_idk()) {
 		writel(MII_MODE_ENABLE, &cdev->miisel);
 		cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if =
 				PHY_INTERFACE_MODE_MII;
 	} else {
 		writel(RGMII_MODE_ENABLE, &cdev->miisel);
 		cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if =
 				PHY_INTERFACE_MODE_RGMII;
 	}

 	rv = cpsw_register(&cpsw_data);
 	if (rv < 0)
 		printf("Error %d registering CPSW switch\n", rv);
 	else
 		n += rv;
 #endif

 	/*
 	 *
 	 * CPSW RGMII Internal Delay Mode is not supported in all PVT
 	 * operating points.  So we must set the TX clock delay feature
 	 * in the AR8051 PHY.  Since we only support a single ethernet
 	 * device in U-Boot, we only do this for the first instance.
 	 */
 #define AR8051_PHY_DEBUG_ADDR_REG	0x1d
 #define AR8051_PHY_DEBUG_DATA_REG	0x1e
 #define AR8051_DEBUG_RGMII_CLK_DLY_REG	0x5
 #define AR8051_RGMII_TX_CLK_DLY		0x100

 	if (board_is_evm_sk() || board_is_gp_evm()) {
 		const char *devname;
 		devname = miiphy_get_current_dev();

 		miiphy_write(devname, 0x0, AR8051_PHY_DEBUG_ADDR_REG,
 				AR8051_DEBUG_RGMII_CLK_DLY_REG);
 		miiphy_write(devname, 0x0, AR8051_PHY_DEBUG_DATA_REG,
 				AR8051_RGMII_TX_CLK_DLY);
 	}
 #endif
 #if defined(CONFIG_USB_ETHER) && \
 	(!defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_USBETH_SUPPORT))
 	if (is_valid_ether_addr(mac_addr))
 		eth_setenv_enetaddr("usbnet_devaddr", mac_addr);

 	rv = usb_eth_initialize(bis);
 	if (rv < 0)
 		printf("Error %d registering USB_ETHER\n", rv);
 	else
 		n += rv;
 #endif
 	return n;
 }
 #endif
	/*
	* board.c
	*
	* Board functions for TI AM335X based boards
	*
	* Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
	*
	* 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.
	*/

	#include <common.h>
	#include <errno.h>
	#include <spl.h>
	#include <asm/arch/cpu.h>
	#include <asm/arch/hardware.h>
	#include <asm/arch/omap.h>
	#include <asm/arch/ddr_defs.h>
	#include <asm/arch/clock.h>
	#include <asm/arch/gpio.h>
	#include <asm/arch/mmc_host_def.h>
	#include <asm/arch/sys_proto.h>
	#include <asm/io.h>
	#include <asm/emif.h>
	#include <asm/gpio.h>
	#include <i2c.h>
	#include <miiphy.h>
	#include <cpsw.h>
	#include "board.h"

	DECLARE_GLOBAL_DATA_PTR;

	static struct wd_timer wdtimer = (struct wd_timer )WDT_BASE;

	/* MII mode defines */
	#define MII_MODE_ENABLE 0x0
	#define RGMII_MODE_ENABLE 0x3A

	/* GPIO that controls power to DDR on EVM-SK */
	#define GPIO_DDR_VTT_EN 7

	static struct ctrl_dev cdev = (struct ctrl_dev )CTRL_DEVICE_BASE;

	static struct am335x_baseboard_id __attribute__((section (".data"))) header;

	static inline int board_is_bone(void)
	{
	return !strncmp(header.name, "A335BONE", HDR_NAME_LEN);
	}

	static inline int board_is_bone_lt(void)
	{
	return !strncmp(header.name, "A335BNLT", HDR_NAME_LEN);
	}

	static inline int board_is_evm_sk(void)
	{
	return !strncmp("A335X_SK", header.name, HDR_NAME_LEN);
	}

	static inline int board_is_idk(void)
	{
	return !strncmp(header.config, "SKU#02", 6);
	}

	static int __maybe_unused board_is_gp_evm(void)
	{
	return !strncmp("A33515BB", header.name, 8);
	}

	int board_is_evm_15_or_later(void)
	{
	return (!strncmp("A33515BB", header.name, 8) &&
	strncmp("1.5", header.version, 3) <= 0);
	}

	/*
	* Read header information from EEPROM into global structure.
	*/
	static int read_eeprom(void)
	{
	/* Check if baseboard eeprom is available */
	if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
	puts("Could not probe the EEPROM; something fundamentally "
	"wrong on the I2C bus.\n");
	return -ENODEV;
	}

	/* read the eeprom using i2c */
	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, (uchar *)&header,
	sizeof(header))) {
	puts("Could not read the EEPROM; something fundamentally"
	" wrong on the I2C bus.\n");
	return -EIO;
	}

	if (header.magic != 0xEE3355AA) {
	/*
	* read the eeprom using i2c again,
	* but use only a 1 byte address
	*/
	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 1,
	(uchar *)&header, sizeof(header))) {
	puts("Could not read the EEPROM; something "
	"fundamentally wrong on the I2C bus.\n");
	return -EIO;
	}

	if (header.magic != 0xEE3355AA) {
	printf("Incorrect magic number (0x%x) in EEPROM\n",
	header.magic);
	return -EINVAL;
	}
	}

	return 0;
	}

	#ifdef CONFIG_SPL_BUILD
	static const struct ddr_data ddr2_data = {
	.datardsratio0 = ((MT47H128M16RT25E_RD_DQS<<30) \|
	(MT47H128M16RT25E_RD_DQS<<20) \|
	(MT47H128M16RT25E_RD_DQS<<10) \|
	(MT47H128M16RT25E_RD_DQS<<0)),
	.datawdsratio0 = ((MT47H128M16RT25E_WR_DQS<<30) \|
	(MT47H128M16RT25E_WR_DQS<<20) \|
	(MT47H128M16RT25E_WR_DQS<<10) \|
	(MT47H128M16RT25E_WR_DQS<<0)),
	.datawiratio0 = ((MT47H128M16RT25E_PHY_WRLVL<<30) \|
	(MT47H128M16RT25E_PHY_WRLVL<<20) \|
	(MT47H128M16RT25E_PHY_WRLVL<<10) \|
	(MT47H128M16RT25E_PHY_WRLVL<<0)),
	.datagiratio0 = ((MT47H128M16RT25E_PHY_GATELVL<<30) \|
	(MT47H128M16RT25E_PHY_GATELVL<<20) \|
	(MT47H128M16RT25E_PHY_GATELVL<<10) \|
	(MT47H128M16RT25E_PHY_GATELVL<<0)),
	.datafwsratio0 = ((MT47H128M16RT25E_PHY_FIFO_WE<<30) \|
	(MT47H128M16RT25E_PHY_FIFO_WE<<20) \|
	(MT47H128M16RT25E_PHY_FIFO_WE<<10) \|
	(MT47H128M16RT25E_PHY_FIFO_WE<<0)),
	.datawrsratio0 = ((MT47H128M16RT25E_PHY_WR_DATA<<30) \|
	(MT47H128M16RT25E_PHY_WR_DATA<<20) \|
	(MT47H128M16RT25E_PHY_WR_DATA<<10) \|
	(MT47H128M16RT25E_PHY_WR_DATA<<0)),
	.datauserank0delay = MT47H128M16RT25E_PHY_RANK0_DELAY,
	.datadldiff0 = PHY_DLL_LOCK_DIFF,
	};

	static const struct cmd_control ddr2_cmd_ctrl_data = {
	.cmd0csratio = MT47H128M16RT25E_RATIO,
	.cmd0dldiff = MT47H128M16RT25E_DLL_LOCK_DIFF,
	.cmd0iclkout = MT47H128M16RT25E_INVERT_CLKOUT,

	.cmd1csratio = MT47H128M16RT25E_RATIO,
	.cmd1dldiff = MT47H128M16RT25E_DLL_LOCK_DIFF,
	.cmd1iclkout = MT47H128M16RT25E_INVERT_CLKOUT,

	.cmd2csratio = MT47H128M16RT25E_RATIO,
	.cmd2dldiff = MT47H128M16RT25E_DLL_LOCK_DIFF,
	.cmd2iclkout = MT47H128M16RT25E_INVERT_CLKOUT,
	};

	static const struct emif_regs ddr2_emif_reg_data = {
	.sdram_config = MT47H128M16RT25E_EMIF_SDCFG,
	.ref_ctrl = MT47H128M16RT25E_EMIF_SDREF,
	.sdram_tim1 = MT47H128M16RT25E_EMIF_TIM1,
	.sdram_tim2 = MT47H128M16RT25E_EMIF_TIM2,
	.sdram_tim3 = MT47H128M16RT25E_EMIF_TIM3,
	.emif_ddr_phy_ctlr_1 = MT47H128M16RT25E_EMIF_READ_LATENCY,
	};

	static const struct ddr_data ddr3_data = {
	.datardsratio0 = MT41J128MJT125_RD_DQS,
	.datawdsratio0 = MT41J128MJT125_WR_DQS,
	.datafwsratio0 = MT41J128MJT125_PHY_FIFO_WE,
	.datawrsratio0 = MT41J128MJT125_PHY_WR_DATA,
	.datadldiff0 = PHY_DLL_LOCK_DIFF,
	};

	static const struct ddr_data ddr3_beagleblack_data = {
	.datardsratio0 = MT41K256M16HA125E_RD_DQS,
	.datawdsratio0 = MT41K256M16HA125E_WR_DQS,
	.datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE,
	.datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA,
	.datadldiff0 = PHY_DLL_LOCK_DIFF,
	};

	static const struct ddr_data ddr3_evm_data = {
	.datardsratio0 = MT41J512M8RH125_RD_DQS,
	.datawdsratio0 = MT41J512M8RH125_WR_DQS,
	.datafwsratio0 = MT41J512M8RH125_PHY_FIFO_WE,
	.datawrsratio0 = MT41J512M8RH125_PHY_WR_DATA,
	.datadldiff0 = PHY_DLL_LOCK_DIFF,
	};

	static const struct cmd_control ddr3_cmd_ctrl_data = {
	.cmd0csratio = MT41J128MJT125_RATIO,
	.cmd0dldiff = MT41J128MJT125_DLL_LOCK_DIFF,
	.cmd0iclkout = MT41J128MJT125_INVERT_CLKOUT,

	.cmd1csratio = MT41J128MJT125_RATIO,
	.cmd1dldiff = MT41J128MJT125_DLL_LOCK_DIFF,
	.cmd1iclkout = MT41J128MJT125_INVERT_CLKOUT,

	.cmd2csratio = MT41J128MJT125_RATIO,
	.cmd2dldiff = MT41J128MJT125_DLL_LOCK_DIFF,
	.cmd2iclkout = MT41J128MJT125_INVERT_CLKOUT,
	};

	static const struct cmd_control ddr3_beagleblack_cmd_ctrl_data = {
	.cmd0csratio = MT41K256M16HA125E_RATIO,
	.cmd0dldiff = MT41K256M16HA125E_DLL_LOCK_DIFF,
	.cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,

	.cmd1csratio = MT41K256M16HA125E_RATIO,
	.cmd1dldiff = MT41K256M16HA125E_DLL_LOCK_DIFF,
	.cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,

	.cmd2csratio = MT41K256M16HA125E_RATIO,
	.cmd2dldiff = MT41K256M16HA125E_DLL_LOCK_DIFF,
	.cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
	};

	static const struct cmd_control ddr3_evm_cmd_ctrl_data = {
	.cmd0csratio = MT41J512M8RH125_RATIO,
	.cmd0dldiff = MT41J512M8RH125_DLL_LOCK_DIFF,
	.cmd0iclkout = MT41J512M8RH125_INVERT_CLKOUT,

	.cmd1csratio = MT41J512M8RH125_RATIO,
	.cmd1dldiff = MT41J512M8RH125_DLL_LOCK_DIFF,
	.cmd1iclkout = MT41J512M8RH125_INVERT_CLKOUT,

	.cmd2csratio = MT41J512M8RH125_RATIO,
	.cmd2dldiff = MT41J512M8RH125_DLL_LOCK_DIFF,
	.cmd2iclkout = MT41J512M8RH125_INVERT_CLKOUT,
	};

	static struct emif_regs ddr3_emif_reg_data = {
	.sdram_config = MT41J128MJT125_EMIF_SDCFG,
	.ref_ctrl = MT41J128MJT125_EMIF_SDREF,
	.sdram_tim1 = MT41J128MJT125_EMIF_TIM1,
	.sdram_tim2 = MT41J128MJT125_EMIF_TIM2,
	.sdram_tim3 = MT41J128MJT125_EMIF_TIM3,
	.zq_config = MT41J128MJT125_ZQ_CFG,
	.emif_ddr_phy_ctlr_1 = MT41J128MJT125_EMIF_READ_LATENCY \|
	PHY_EN_DYN_PWRDN,
	};

	static struct emif_regs ddr3_beagleblack_emif_reg_data = {
	.sdram_config = MT41K256M16HA125E_EMIF_SDCFG,
	.ref_ctrl = MT41K256M16HA125E_EMIF_SDREF,
	.sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1,
	.sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2,
	.sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3,
	.zq_config = MT41K256M16HA125E_ZQ_CFG,
	.emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY,
	};

	static struct emif_regs ddr3_evm_emif_reg_data = {
	.sdram_config = MT41J512M8RH125_EMIF_SDCFG,
	.ref_ctrl = MT41J512M8RH125_EMIF_SDREF,
	.sdram_tim1 = MT41J512M8RH125_EMIF_TIM1,
	.sdram_tim2 = MT41J512M8RH125_EMIF_TIM2,
	.sdram_tim3 = MT41J512M8RH125_EMIF_TIM3,
	.zq_config = MT41J512M8RH125_ZQ_CFG,
	.emif_ddr_phy_ctlr_1 = MT41J512M8RH125_EMIF_READ_LATENCY \|
	PHY_EN_DYN_PWRDN,
	};

	#ifdef CONFIG_SPL_OS_BOOT
	int spl_start_uboot(void)
	{
	/* break into full u-boot on 'c' */
	return (serial_tstc() && serial_getc() == 'c');
	}
	#endif

	#endif

	/*
	* early system init of muxing and clocks.
	*/
	void s_init(void)
	{
	/*
	* Save the boot parameters passed from romcode.
	* We cannot delay the saving further than this,
	* to prevent overwrites.
	*/
	#ifdef CONFIG_SPL_BUILD
	save_omap_boot_params();
	#endif

	/* WDT1 is already running when the bootloader gets control
	* Disable it to avoid "random" resets
	*/
	writel(0xAAAA, &wdtimer->wdtwspr);
	while (readl(&wdtimer->wdtwwps) != 0x0)
	;
	writel(0x5555, &wdtimer->wdtwspr);
	while (readl(&wdtimer->wdtwwps) != 0x0)
	;

	#ifdef CONFIG_SPL_BUILD
	/* Setup the PLLs and the clocks for the peripherals */
	pll_init();

	/* Enable RTC32K clock */
	rtc32k_enable();

	#ifdef CONFIG_SERIAL1
	enable_uart0_pin_mux();
	#endif /* CONFIG_SERIAL1 */
	#ifdef CONFIG_SERIAL2
	enable_uart1_pin_mux();
	#endif /* CONFIG_SERIAL2 */
	#ifdef CONFIG_SERIAL3
	enable_uart2_pin_mux();
	#endif /* CONFIG_SERIAL3 */
	#ifdef CONFIG_SERIAL4
	enable_uart3_pin_mux();
	#endif /* CONFIG_SERIAL4 */
	#ifdef CONFIG_SERIAL5
	enable_uart4_pin_mux();
	#endif /* CONFIG_SERIAL5 */
	#ifdef CONFIG_SERIAL6
	enable_uart5_pin_mux();
	#endif /* CONFIG_SERIAL6 */

	uart_soft_reset();

	gd = &gdata;

	preloader_console_init();

	/* Initalize the board header */
	enable_i2c0_pin_mux();
	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
	if (read_eeprom() < 0)
	puts("Could not get board ID.\n");

	enable_board_pin_mux(&header);
	if (board_is_evm_sk()) {
	/*
	* EVM SK 1.2A and later use gpio0_7 to enable DDR3.
	* This is safe enough to do on older revs.
	*/
	gpio_request(GPIO_DDR_VTT_EN, "ddr_vtt_en");
	gpio_direction_output(GPIO_DDR_VTT_EN, 1);
	}

	if (board_is_evm_sk())
	config_ddr(303, MT41J128MJT125_IOCTRL_VALUE, &ddr3_data,
	&ddr3_cmd_ctrl_data, &ddr3_emif_reg_data, 0);
	else if (board_is_bone_lt())
	config_ddr(400, MT41K256M16HA125E_IOCTRL_VALUE,
	&ddr3_beagleblack_data,
	&ddr3_beagleblack_cmd_ctrl_data,
	&ddr3_beagleblack_emif_reg_data, 0);
	else if (board_is_evm_15_or_later())
	config_ddr(303, MT41J512M8RH125_IOCTRL_VALUE, &ddr3_evm_data,
	&ddr3_evm_cmd_ctrl_data, &ddr3_evm_emif_reg_data, 0);
	else
	config_ddr(266, MT47H128M16RT25E_IOCTRL_VALUE, &ddr2_data,
	&ddr2_cmd_ctrl_data, &ddr2_emif_reg_data, 0);
	#endif
	}

	/*
	* Basic board specific setup. Pinmux has been handled already.
	*/
	int board_init(void)
	{
	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
	if (read_eeprom() < 0)
	puts("Could not get board ID.\n");

	gd->bd->bi_boot_params = PHYS_DRAM_1 + 0x100;

	gpmc_init();

	return 0;
	}

	#ifdef CONFIG_BOARD_LATE_INIT
	int board_late_init(void)
	{
	#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	char safe_string[HDR_NAME_LEN + 1];

	/* Now set variables based on the header. */
	strncpy(safe_string, (char *)header.name, sizeof(header.name));
	safe_string[sizeof(header.name)] = 0;
	setenv("board_name", safe_string);

	strncpy(safe_string, (char *)header.version, sizeof(header.version));
	safe_string[sizeof(header.version)] = 0;
	setenv("board_rev", safe_string);
	#endif

	return 0;
	}
	#endif

	#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) \|\| \
	(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
	static void cpsw_control(int enabled)
	{
	/* VTP can be added here */

	return;
	}

	static struct cpsw_slave_data cpsw_slaves[] = {
	{
	.slave_reg_ofs = 0x208,
	.sliver_reg_ofs = 0xd80,
	.phy_id = 0,
	},
	{
	.slave_reg_ofs = 0x308,
	.sliver_reg_ofs = 0xdc0,
	.phy_id = 1,
	},
	};

	static struct cpsw_platform_data cpsw_data = {
	.mdio_base = CPSW_MDIO_BASE,
	.cpsw_base = CPSW_BASE,
	.mdio_div = 0xff,
	.channels = 8,
	.cpdma_reg_ofs = 0x800,
	.slaves = 1,
	.slave_data = cpsw_slaves,
	.ale_reg_ofs = 0xd00,
	.ale_entries = 1024,
	.host_port_reg_ofs = 0x108,
	.hw_stats_reg_ofs = 0x900,
	.mac_control = (1 << 5),
	.control = cpsw_control,
	.host_port_num = 0,
	.version = CPSW_CTRL_VERSION_2,
	};
	#endif

	#if defined(CONFIG_DRIVER_TI_CPSW) \|\| \
	(defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
	int board_eth_init(bd_t *bis)
	{
	int rv, n = 0;
	uint8_t mac_addr[6];
	uint32_t mac_hi, mac_lo;

	/* try reading mac address from efuse */
	mac_lo = readl(&cdev->macid0l);
	mac_hi = readl(&cdev->macid0h);
	mac_addr[0] = mac_hi & 0xFF;
	mac_addr[1] = (mac_hi & 0xFF00) >> 8;
	mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
	mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
	mac_addr[4] = mac_lo & 0xFF;
	mac_addr[5] = (mac_lo & 0xFF00) >> 8;

	#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) \|\| \
	(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
	if (!getenv("ethaddr")) {
	printf("<ethaddr> not set. Validating first E-fuse MAC\n");

	if (is_valid_ether_addr(mac_addr))
	eth_setenv_enetaddr("ethaddr", mac_addr);
	}

	#ifdef CONFIG_DRIVER_TI_CPSW
	if (board_is_bone() \|\| board_is_bone_lt() \|\| board_is_idk()) {
	writel(MII_MODE_ENABLE, &cdev->miisel);
	cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if =
	PHY_INTERFACE_MODE_MII;
	} else {
	writel(RGMII_MODE_ENABLE, &cdev->miisel);
	cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if =
	PHY_INTERFACE_MODE_RGMII;
	}

	rv = cpsw_register(&cpsw_data);
	if (rv < 0)
	printf("Error %d registering CPSW switch\n", rv);
	else
	n += rv;
	#endif

	/*
	*
	* CPSW RGMII Internal Delay Mode is not supported in all PVT
	* operating points. So we must set the TX clock delay feature
	* in the AR8051 PHY. Since we only support a single ethernet
	* device in U-Boot, we only do this for the first instance.
	*/
	#define AR8051_PHY_DEBUG_ADDR_REG 0x1d
	#define AR8051_PHY_DEBUG_DATA_REG 0x1e
	#define AR8051_DEBUG_RGMII_CLK_DLY_REG 0x5
	#define AR8051_RGMII_TX_CLK_DLY 0x100

	if (board_is_evm_sk() \|\| board_is_gp_evm()) {
	const char *devname;
	devname = miiphy_get_current_dev();

	miiphy_write(devname, 0x0, AR8051_PHY_DEBUG_ADDR_REG,
	AR8051_DEBUG_RGMII_CLK_DLY_REG);
	miiphy_write(devname, 0x0, AR8051_PHY_DEBUG_DATA_REG,
	AR8051_RGMII_TX_CLK_DLY);
	}
	#endif
	#if defined(CONFIG_USB_ETHER) && \
	(!defined(CONFIG_SPL_BUILD) \|\| defined(CONFIG_SPL_USBETH_SUPPORT))
	if (is_valid_ether_addr(mac_addr))
	eth_setenv_enetaddr("usbnet_devaddr", mac_addr);

	rv = usb_eth_initialize(bis);
	if (rv < 0)
	printf("Error %d registering USB_ETHER\n", rv);
	else
	n += rv;
	#endif
	return n;
	}
	#endif