board/gumstix/pepper/board.c - platform/external/u-boot - Gitiles

 /*
  * Board functions for Gumstix Pepper and AM335x-based boards
  *
  * Copyright (C) 2014, Gumstix, Incorporated - http://www.gumstix.com/
  * Based on board/ti/am335x/board.c from Texas Instruments, Inc.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

 #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/arch/mem.h>
 #include <asm/io.h>
 #include <asm/emif.h>
 #include <asm/gpio.h>
 #include <i2c.h>
 #include <miiphy.h>
 #include <cpsw.h>
 #include <power/tps65217.h>
 #include <environment.h>
 #include <watchdog.h>
 #include "board.h"

 DECLARE_GLOBAL_DATA_PTR;

 #ifdef CONFIG_SPL_BUILD
 #define OSC	(V_OSCK/1000000)

 static const struct ddr_data ddr3_data = {
 	.datardsratio0 = MT41K256M16HA125E_RD_DQS,
 	.datawdsratio0 = MT41K256M16HA125E_WR_DQS,
 	.datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE,
 	.datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA,
 };

 static const struct cmd_control ddr3_cmd_ctrl_data = {
 	.cmd0csratio = MT41K256M16HA125E_RATIO,
 	.cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,

 	.cmd1csratio = MT41K256M16HA125E_RATIO,
 	.cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,

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

 static struct emif_regs ddr3_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,
 };

 const struct dpll_params dpll_ddr3 = {400, OSC-1, 1, -1, -1, -1, -1};

 const struct ctrl_ioregs ioregs_ddr3 = {
 	.cm0ioctl               = MT41K256M16HA125E_IOCTRL_VALUE,
 	.cm1ioctl               = MT41K256M16HA125E_IOCTRL_VALUE,
 	.cm2ioctl               = MT41K256M16HA125E_IOCTRL_VALUE,
 	.dt0ioctl               = MT41K256M16HA125E_IOCTRL_VALUE,
 	.dt1ioctl               = MT41K256M16HA125E_IOCTRL_VALUE,
 };

 static const struct ddr_data ddr2_data = {
 	.datardsratio0 = MT47H128M16RT25E_RD_DQS,
 	.datafwsratio0 = MT47H128M16RT25E_PHY_FIFO_WE,
 	.datawrsratio0 = MT47H128M16RT25E_PHY_WR_DATA,
 };

 static const struct cmd_control ddr2_cmd_ctrl_data = {
 	.cmd0csratio = MT47H128M16RT25E_RATIO,

 	.cmd1csratio = MT47H128M16RT25E_RATIO,

 	.cmd2csratio = MT47H128M16RT25E_RATIO,
 };

 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,
 };

 const struct dpll_params dpll_ddr2 = {266, OSC-1, 1, -1, -1, -1, -1};

 const struct ctrl_ioregs ioregs_ddr2 = {
 	.cm0ioctl		= MT47H128M16RT25E_IOCTRL_VALUE,
 	.cm1ioctl		= MT47H128M16RT25E_IOCTRL_VALUE,
 	.cm2ioctl		= MT47H128M16RT25E_IOCTRL_VALUE,
 	.dt0ioctl		= MT47H128M16RT25E_IOCTRL_VALUE,
 	.dt1ioctl		= MT47H128M16RT25E_IOCTRL_VALUE,
 };

 static int read_eeprom(struct pepper_board_id *header)
 {
 	if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
 		return -ENODEV;
 	}

 	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 1, (uchar *)header,
 		sizeof(struct pepper_board_id))) {
 		return -EIO;
 	}

 	return 0;
 }

 const struct dpll_params *get_dpll_ddr_params(void)
 {
 	struct pepper_board_id header;

 	enable_i2c0_pin_mux();
 	i2c_set_bus_num(0);

 	if (read_eeprom(&header) < 0)
 		return &dpll_ddr3;

 	switch (header.device_vendor) {
 	case GUMSTIX_PEPPER:
 		return &dpll_ddr2;
 	case GUMSTIX_PEPPER_DVI:
 		return &dpll_ddr3;
 	default:
 		return &dpll_ddr3;
 	}
 }

 void sdram_init(void)
 {
 	const struct dpll_params *dpll = get_dpll_ddr_params();

 	/*
 	 * Here we are assuming PLL clock reveals the type of RAM.
 	 * DDR2 = 266
 	 * DDR3 = 400
 	 * Note that DDR3 is the default.
 	 */
 	if (dpll->m == 266) {
 		config_ddr(dpll->m, &ioregs_ddr2, &ddr2_data,
 			&ddr2_cmd_ctrl_data, &ddr2_emif_reg_data, 0);
 	}
 	else if (dpll->m == 400) {
 		config_ddr(dpll->m, &ioregs_ddr3, &ddr3_data,
 			&ddr3_cmd_ctrl_data, &ddr3_emif_reg_data, 0);
 	}
 }

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

 void set_uart_mux_conf(void)
 {
 	enable_uart0_pin_mux();
 }

 void set_mux_conf_regs(void)
 {
 	enable_board_pin_mux();
 }


 #endif

 int board_init(void)
 {
 #if defined(CONFIG_HW_WATCHDOG)
 	hw_watchdog_init();
 #endif

 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
 	gpmc_init();

 	return 0;
 }

 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
 	(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
 static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;

 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_addr	= 0,
 		.phy_if		= PHY_INTERFACE_MODE_RGMII,
 	},
 };

 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,
 	.bd_ram_ofs		= 0x2000,
 	.mac_control		= (1 << 5),
 	.control		= cpsw_control,
 	.host_port_num		= 0,
 	.version		= CPSW_CTRL_VERSION_2,
 };

 int board_eth_init(bd_t *bis)
 {
 	int rv, n = 0;
 	uint8_t mac_addr[6];
 	uint32_t mac_hi, mac_lo;
 	const char *devname;

 	if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
 		/* 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_ethaddr(mac_addr))
 			eth_env_set_enetaddr("ethaddr", mac_addr);
 	}

 	writel((RGMII_MODE_ENABLE | RGMII_INT_DELAY), &cdev->miisel);

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

 	/*
 	 *
 	 * CPSW RGMII Internal Delay Mode is not supported in all PVT
 	 * operating points.  So we must set the TX clock delay feature
 	 * in the KSZ9021 PHY.  Since we only support a single ethernet
 	 * device in U-Boot, we only do this for the current instance.
 	 */
 	devname = miiphy_get_current_dev();
 	/* max rx/tx clock delay, min rx/tx control delay */
 	miiphy_write(devname, 0x0, 0x0b, 0x8104);
 	miiphy_write(devname, 0x0, 0xc, 0xa0a0);

 	/* min rx data delay */
 	miiphy_write(devname, 0x0, 0x0b, 0x8105);
 	miiphy_write(devname, 0x0, 0x0c, 0x0000);

 	/* min tx data delay */
 	miiphy_write(devname, 0x0, 0x0b, 0x8106);
 	miiphy_write(devname, 0x0, 0x0c, 0x0000);

 	return n;
 }
 #endif
	/*
	* Board functions for Gumstix Pepper and AM335x-based boards
	*
	* Copyright (C) 2014, Gumstix, Incorporated - http://www.gumstix.com/
	* Based on board/ti/am335x/board.c from Texas Instruments, Inc.
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/

	#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/arch/mem.h>
	#include <asm/io.h>
	#include <asm/emif.h>
	#include <asm/gpio.h>
	#include <i2c.h>
	#include <miiphy.h>
	#include <cpsw.h>
	#include <power/tps65217.h>
	#include <environment.h>
	#include <watchdog.h>
	#include "board.h"

	DECLARE_GLOBAL_DATA_PTR;

	#ifdef CONFIG_SPL_BUILD
	#define OSC (V_OSCK/1000000)

	static const struct ddr_data ddr3_data = {
	.datardsratio0 = MT41K256M16HA125E_RD_DQS,
	.datawdsratio0 = MT41K256M16HA125E_WR_DQS,
	.datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE,
	.datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA,
	};

	static const struct cmd_control ddr3_cmd_ctrl_data = {
	.cmd0csratio = MT41K256M16HA125E_RATIO,
	.cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,

	.cmd1csratio = MT41K256M16HA125E_RATIO,
	.cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,

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

	static struct emif_regs ddr3_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,
	};

	const struct dpll_params dpll_ddr3 = {400, OSC-1, 1, -1, -1, -1, -1};

	const struct ctrl_ioregs ioregs_ddr3 = {
	.cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
	.cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
	.cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
	.dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
	.dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
	};

	static const struct ddr_data ddr2_data = {
	.datardsratio0 = MT47H128M16RT25E_RD_DQS,
	.datafwsratio0 = MT47H128M16RT25E_PHY_FIFO_WE,
	.datawrsratio0 = MT47H128M16RT25E_PHY_WR_DATA,
	};

	static const struct cmd_control ddr2_cmd_ctrl_data = {
	.cmd0csratio = MT47H128M16RT25E_RATIO,

	.cmd1csratio = MT47H128M16RT25E_RATIO,

	.cmd2csratio = MT47H128M16RT25E_RATIO,
	};

	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,
	};

	const struct dpll_params dpll_ddr2 = {266, OSC-1, 1, -1, -1, -1, -1};

	const struct ctrl_ioregs ioregs_ddr2 = {
	.cm0ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
	.cm1ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
	.cm2ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
	.dt0ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
	.dt1ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
	};

	static int read_eeprom(struct pepper_board_id *header)
	{
	if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
	return -ENODEV;
	}

	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 1, (uchar *)header,
	sizeof(struct pepper_board_id))) {
	return -EIO;
	}

	return 0;
	}

	const struct dpll_params *get_dpll_ddr_params(void)
	{
	struct pepper_board_id header;

	enable_i2c0_pin_mux();
	i2c_set_bus_num(0);

	if (read_eeprom(&header) < 0)
	return &dpll_ddr3;

	switch (header.device_vendor) {
	case GUMSTIX_PEPPER:
	return &dpll_ddr2;
	case GUMSTIX_PEPPER_DVI:
	return &dpll_ddr3;
	default:
	return &dpll_ddr3;
	}
	}

	void sdram_init(void)
	{
	const struct dpll_params *dpll = get_dpll_ddr_params();

	/*
	* Here we are assuming PLL clock reveals the type of RAM.
	* DDR2 = 266
	* DDR3 = 400
	* Note that DDR3 is the default.
	*/
	if (dpll->m == 266) {
	config_ddr(dpll->m, &ioregs_ddr2, &ddr2_data,
	&ddr2_cmd_ctrl_data, &ddr2_emif_reg_data, 0);
	}
	else if (dpll->m == 400) {
	config_ddr(dpll->m, &ioregs_ddr3, &ddr3_data,
	&ddr3_cmd_ctrl_data, &ddr3_emif_reg_data, 0);
	}
	}

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

	void set_uart_mux_conf(void)
	{
	enable_uart0_pin_mux();
	}

	void set_mux_conf_regs(void)
	{
	enable_board_pin_mux();
	}


	#endif

	int board_init(void)
	{
	#if defined(CONFIG_HW_WATCHDOG)
	hw_watchdog_init();
	#endif

	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
	gpmc_init();

	return 0;
	}

	#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) \|\| \
	(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
	static struct ctrl_dev cdev = (struct ctrl_dev )CTRL_DEVICE_BASE;

	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_addr = 0,
	.phy_if = PHY_INTERFACE_MODE_RGMII,
	},
	};

	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,
	.bd_ram_ofs = 0x2000,
	.mac_control = (1 << 5),
	.control = cpsw_control,
	.host_port_num = 0,
	.version = CPSW_CTRL_VERSION_2,
	};

	int board_eth_init(bd_t *bis)
	{
	int rv, n = 0;
	uint8_t mac_addr[6];
	uint32_t mac_hi, mac_lo;
	const char *devname;

	if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
	/* 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_ethaddr(mac_addr))
	eth_env_set_enetaddr("ethaddr", mac_addr);
	}

	writel((RGMII_MODE_ENABLE \| RGMII_INT_DELAY), &cdev->miisel);

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

	/*
	*
	* CPSW RGMII Internal Delay Mode is not supported in all PVT
	* operating points. So we must set the TX clock delay feature
	* in the KSZ9021 PHY. Since we only support a single ethernet
	* device in U-Boot, we only do this for the current instance.
	*/
	devname = miiphy_get_current_dev();
	/* max rx/tx clock delay, min rx/tx control delay */
	miiphy_write(devname, 0x0, 0x0b, 0x8104);
	miiphy_write(devname, 0x0, 0xc, 0xa0a0);

	/* min rx data delay */
	miiphy_write(devname, 0x0, 0x0b, 0x8105);
	miiphy_write(devname, 0x0, 0x0c, 0x0000);

	/* min tx data delay */
	miiphy_write(devname, 0x0, 0x0b, 0x8106);
	miiphy_write(devname, 0x0, 0x0c, 0x0000);

	return n;
	}
	#endif