arch/arm/cpu/armv7/am33xx/board.c - filogic/uboot - Gitiles

 /*
  * board.c
  *
  * Common board functions for AM33XX 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>

 DECLARE_GLOBAL_DATA_PTR;

 struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE;
 struct uart_sys *uart_base = (struct uart_sys *)DEFAULT_UART_BASE;

 static const struct gpio_bank gpio_bank_am33xx[4] = {
 	{ (void *)AM33XX_GPIO0_BASE, METHOD_GPIO_24XX },
 	{ (void *)AM33XX_GPIO1_BASE, METHOD_GPIO_24XX },
 	{ (void *)AM33XX_GPIO2_BASE, METHOD_GPIO_24XX },
 	{ (void *)AM33XX_GPIO3_BASE, METHOD_GPIO_24XX },
 };

 const struct gpio_bank *const omap_gpio_bank = gpio_bank_am33xx;

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

 /* 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_evm_sk(void)
 {
 	return !strncmp("A335X_SK", header.name, HDR_NAME_LEN);
 }

 /*
  * 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;
 }

 /* UART Defines */
 #ifdef CONFIG_SPL_BUILD
 #define UART_RESET		(0x1 << 1)
 #define UART_CLK_RUNNING_MASK	0x1
 #define UART_SMART_IDLE_EN	(0x1 << 0x3)
 #endif

 /*
  * Determine what type of DDR we have.
  */
 static short inline board_memory_type(void)
 {
 	/* The following boards are known to use DDR3. */
 	if (board_is_evm_sk())
 		return EMIF_REG_SDRAM_TYPE_DDR3;

 	return EMIF_REG_SDRAM_TYPE_DDR2;
 }

 /*
  * early system init of muxing and clocks.
  */
 void s_init(void)
 {
 	/* 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();

 	/* UART softreset */
 	u32 regVal;

 	enable_uart0_pin_mux();

 	regVal = readl(&uart_base->uartsyscfg);
 	regVal |= UART_RESET;
 	writel(regVal, &uart_base->uartsyscfg);
 	while ((readl(&uart_base->uartsyssts) &
 		UART_CLK_RUNNING_MASK) != UART_CLK_RUNNING_MASK)
 		;

 	/* Disable smart idle */
 	regVal = readl(&uart_base->uartsyscfg);
 	regVal |= UART_SMART_IDLE_EN;
 	writel(regVal, &uart_base->uartsyscfg);

 	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);
 	}

 	config_ddr(board_memory_type());
 #endif
 }

 #if defined(CONFIG_OMAP_HSMMC) && !defined(CONFIG_SPL_BUILD)
 int board_mmc_init(bd_t *bis)
 {
 	int ret;

 	ret = omap_mmc_init(0, 0, 0);
 	if (ret)
 		return ret;

 	return omap_mmc_init(1, 0, 0);
 }
 #endif

 void setup_clocks_for_console(void)
 {
 	/* Not yet implemented */
 	return;
 }

 /*
  * 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;

 	return 0;
 }

 #ifdef CONFIG_DRIVER_TI_CPSW
 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		= AM335X_CPSW_MDIO_BASE,
 	.cpsw_base		= AM335X_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,
 };

 int board_eth_init(bd_t *bis)
 {
 	uint8_t mac_addr[6];
 	uint32_t mac_hi, mac_lo;

 	if (!eth_getenv_enetaddr("ethaddr", mac_addr)) {
 		debug("<ethaddr> not set. Reading from E-fuse\n");
 		/* 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 (is_valid_ether_addr(mac_addr))
 			eth_setenv_enetaddr("ethaddr", mac_addr);
 		else
 			return -1;
 	}

 	if (board_is_bone()) {
 		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;
 	}

 	return cpsw_register(&cpsw_data);
 }
 #endif
	/*
	* board.c
	*
	* Common board functions for AM33XX 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>

	DECLARE_GLOBAL_DATA_PTR;

	struct wd_timer wdtimer = (struct wd_timer )WDT_BASE;
	struct uart_sys uart_base = (struct uart_sys )DEFAULT_UART_BASE;

	static const struct gpio_bank gpio_bank_am33xx[4] = {
	{ (void *)AM33XX_GPIO0_BASE, METHOD_GPIO_24XX },
	{ (void *)AM33XX_GPIO1_BASE, METHOD_GPIO_24XX },
	{ (void *)AM33XX_GPIO2_BASE, METHOD_GPIO_24XX },
	{ (void *)AM33XX_GPIO3_BASE, METHOD_GPIO_24XX },
	};

	const struct gpio_bank *const omap_gpio_bank = gpio_bank_am33xx;

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

	/* 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_evm_sk(void)
	{
	return !strncmp("A335X_SK", header.name, HDR_NAME_LEN);
	}

	/*
	* 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;
	}

	/* UART Defines */
	#ifdef CONFIG_SPL_BUILD
	#define UART_RESET (0x1 << 1)
	#define UART_CLK_RUNNING_MASK 0x1
	#define UART_SMART_IDLE_EN (0x1 << 0x3)
	#endif

	/*
	* Determine what type of DDR we have.
	*/
	static short inline board_memory_type(void)
	{
	/* The following boards are known to use DDR3. */
	if (board_is_evm_sk())
	return EMIF_REG_SDRAM_TYPE_DDR3;

	return EMIF_REG_SDRAM_TYPE_DDR2;
	}

	/*
	* early system init of muxing and clocks.
	*/
	void s_init(void)
	{
	/* 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();

	/* UART softreset */
	u32 regVal;

	enable_uart0_pin_mux();

	regVal = readl(&uart_base->uartsyscfg);
	regVal \|= UART_RESET;
	writel(regVal, &uart_base->uartsyscfg);
	while ((readl(&uart_base->uartsyssts) &
	UART_CLK_RUNNING_MASK) != UART_CLK_RUNNING_MASK)
	;

	/* Disable smart idle */
	regVal = readl(&uart_base->uartsyscfg);
	regVal \|= UART_SMART_IDLE_EN;
	writel(regVal, &uart_base->uartsyscfg);

	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);
	}

	config_ddr(board_memory_type());
	#endif
	}

	#if defined(CONFIG_OMAP_HSMMC) && !defined(CONFIG_SPL_BUILD)
	int board_mmc_init(bd_t *bis)
	{
	int ret;

	ret = omap_mmc_init(0, 0, 0);
	if (ret)
	return ret;

	return omap_mmc_init(1, 0, 0);
	}
	#endif

	void setup_clocks_for_console(void)
	{
	/* Not yet implemented */
	return;
	}

	/*
	* 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;

	return 0;
	}

	#ifdef CONFIG_DRIVER_TI_CPSW
	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 = AM335X_CPSW_MDIO_BASE,
	.cpsw_base = AM335X_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,
	};

	int board_eth_init(bd_t *bis)
	{
	uint8_t mac_addr[6];
	uint32_t mac_hi, mac_lo;

	if (!eth_getenv_enetaddr("ethaddr", mac_addr)) {
	debug("<ethaddr> not set. Reading from E-fuse\n");
	/* 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 (is_valid_ether_addr(mac_addr))
	eth_setenv_enetaddr("ethaddr", mac_addr);
	else
	return -1;
	}

	if (board_is_bone()) {
	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;
	}

	return cpsw_register(&cpsw_data);
	}
	#endif