board/bosch/shc/board.c - filogic/uboot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * board.c
  *
  * (C) Copyright 2016
  * Heiko Schocher, DENX Software Engineering, hs@denx.de.
  *
  * Based on:
  * Board functions for TI AM335X based boards
  *
  * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
  */

 #include <common.h>
 #include <cpu_func.h>
 #include <env.h>
 #include <errno.h>
 #include <init.h>
 #include <irq_func.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 <env_internal.h>
 #include <watchdog.h>
 #include "mmc.h"
 #include "board.h"

 DECLARE_GLOBAL_DATA_PTR;

 static struct shc_eeprom __attribute__((section(".data"))) header;
 static int shc_eeprom_valid;

 /*
  * 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 != HDR_MAGIC) {
 		printf("Incorrect magic number (0x%x) in EEPROM\n",
 		       header.magic);
 		return -EIO;
 	}

 	shc_eeprom_valid = 1;

 	return 0;
 }

 static void shc_request_gpio(void)
 {
 	gpio_request(LED_PWR_BL_GPIO, "LED PWR BL");
 	gpio_request(LED_PWR_RD_GPIO, "LED PWR RD");
 	gpio_request(RESET_GPIO, "reset");
 	gpio_request(WIFI_REGEN_GPIO, "WIFI REGEN");
 	gpio_request(WIFI_RST_GPIO, "WIFI rst");
 	gpio_request(ZIGBEE_RST_GPIO, "ZigBee rst");
 	gpio_request(BIDCOS_RST_GPIO, "BIDCOS rst");
 	gpio_request(ENOC_RST_GPIO, "ENOC rst");
 #if defined CONFIG_B_SAMPLE
 	gpio_request(LED_PWR_GN_GPIO, "LED PWR GN");
 	gpio_request(LED_CONN_BL_GPIO, "LED CONN BL");
 	gpio_request(LED_CONN_RD_GPIO, "LED CONN RD");
 	gpio_request(LED_CONN_GN_GPIO, "LED CONN GN");
 #else
 	gpio_request(LED_LAN_BL_GPIO, "LED LAN BL");
 	gpio_request(LED_LAN_RD_GPIO, "LED LAN RD");
 	gpio_request(LED_CLOUD_BL_GPIO, "LED CLOUD BL");
 	gpio_request(LED_CLOUD_RD_GPIO, "LED CLOUD RD");
 	gpio_request(LED_PWM_GPIO, "LED PWM");
 	gpio_request(Z_WAVE_RST_GPIO, "Z WAVE rst");
 #endif
 	gpio_request(BACK_BUTTON_GPIO, "Back button");
 	gpio_request(FRONT_BUTTON_GPIO, "Front button");
 }

 /*
  * Function which forces all installed modules into running state for ICT
  * testing. Called by SPL.
  */
 static void __maybe_unused force_modules_running(void)
 {
 	/* Wi-Fi power regulator enable - high = enabled */
 	gpio_direction_output(WIFI_REGEN_GPIO, 1);
 	/*
 	 * Wait for Wi-Fi power regulator to reach a stable voltage
 	 * (soft-start time, max. 350 µs)
 	 */
 	__udelay(350);

 	/* Wi-Fi module reset - high = running */
 	gpio_direction_output(WIFI_RST_GPIO, 1);

 	/* ZigBee reset - high = running */
 	gpio_direction_output(ZIGBEE_RST_GPIO, 1);

 	/* BidCos reset - high = running */
 	gpio_direction_output(BIDCOS_RST_GPIO, 1);

 #if !defined(CONFIG_B_SAMPLE)
 	/* Z-Wave reset - high = running */
 	gpio_direction_output(Z_WAVE_RST_GPIO, 1);
 #endif

 	/* EnOcean reset - low = running */
 	gpio_direction_output(ENOC_RST_GPIO, 0);
 }

 /*
  * Function which forces all installed modules into reset - to be released by
  * the OS, called by SPL
  */
 static void __maybe_unused force_modules_reset(void)
 {
 	/* Wi-Fi module reset - low = reset */
 	gpio_direction_output(WIFI_RST_GPIO, 0);

 	/* Wi-Fi power regulator enable - low = disabled */
 	gpio_direction_output(WIFI_REGEN_GPIO, 0);

 	/* ZigBee reset - low = reset */
 	gpio_direction_output(ZIGBEE_RST_GPIO, 0);

 	/* BidCos reset - low = reset */
 	/*gpio_direction_output(BIDCOS_RST_GPIO, 0);*/

 #if !defined(CONFIG_B_SAMPLE)
 	/* Z-Wave reset - low = reset */
 	gpio_direction_output(Z_WAVE_RST_GPIO, 0);
 #endif

 	/* EnOcean reset - high = reset*/
 	gpio_direction_output(ENOC_RST_GPIO, 1);
 }

 /*
  * Function to set the LEDs in the state "Bootloader booting"
  */
 static void __maybe_unused leds_set_booting(void)
 {
 #if defined(CONFIG_B_SAMPLE)

 	/* Turn all red LEDs on */
 	gpio_direction_output(LED_PWR_RD_GPIO, 1);
 	gpio_direction_output(LED_CONN_RD_GPIO, 1);

 #else /* All other SHCs starting with B2-Sample */
 	/* Set the PWM GPIO */
 	gpio_direction_output(LED_PWM_GPIO, 1);
 	/* Turn all red LEDs on */
 	gpio_direction_output(LED_PWR_RD_GPIO, 1);
 	gpio_direction_output(LED_LAN_RD_GPIO, 1);
 	gpio_direction_output(LED_CLOUD_RD_GPIO, 1);

 #endif
 }

 /*
  * Function to set the LEDs in the state "Bootloader error"
  */
 static void leds_set_failure(int state)
 {
 #if defined(CONFIG_B_SAMPLE)
 	/* Turn all blue and green LEDs off */
 	gpio_set_value(LED_PWR_BL_GPIO, 0);
 	gpio_set_value(LED_PWR_GN_GPIO, 0);
 	gpio_set_value(LED_CONN_BL_GPIO, 0);
 	gpio_set_value(LED_CONN_GN_GPIO, 0);

 	/* Turn all red LEDs to 'state' */
 	gpio_set_value(LED_PWR_RD_GPIO, state);
 	gpio_set_value(LED_CONN_RD_GPIO, state);

 #else /* All other SHCs starting with B2-Sample */
 	/* Set the PWM GPIO */
 	gpio_direction_output(LED_PWM_GPIO, 1);

 	/* Turn all blue LEDs off */
 	gpio_set_value(LED_PWR_BL_GPIO, 0);
 	gpio_set_value(LED_LAN_BL_GPIO, 0);
 	gpio_set_value(LED_CLOUD_BL_GPIO, 0);

 	/* Turn all red LEDs to 'state' */
 	gpio_set_value(LED_PWR_RD_GPIO, state);
 	gpio_set_value(LED_LAN_RD_GPIO, state);
 	gpio_set_value(LED_CLOUD_RD_GPIO, state);
 #endif
 }

 /*
  * Function to set the LEDs in the state "Bootloader finished"
  */
 static void leds_set_finish(void)
 {
 #if defined(CONFIG_B_SAMPLE)
 	/* Turn all LEDs off */
 	gpio_set_value(LED_PWR_BL_GPIO, 0);
 	gpio_set_value(LED_PWR_RD_GPIO, 0);
 	gpio_set_value(LED_PWR_GN_GPIO, 0);
 	gpio_set_value(LED_CONN_BL_GPIO, 0);
 	gpio_set_value(LED_CONN_RD_GPIO, 0);
 	gpio_set_value(LED_CONN_GN_GPIO, 0);
 #else /* All other SHCs starting with B2-Sample */
 	/* Turn all LEDs off */
 	gpio_set_value(LED_PWR_BL_GPIO, 0);
 	gpio_set_value(LED_PWR_RD_GPIO, 0);
 	gpio_set_value(LED_LAN_BL_GPIO, 0);
 	gpio_set_value(LED_LAN_RD_GPIO, 0);
 	gpio_set_value(LED_CLOUD_BL_GPIO, 0);
 	gpio_set_value(LED_CLOUD_RD_GPIO, 0);

 	/* Turn off the PWM GPIO and mux it to EHRPWM */
 	gpio_set_value(LED_PWM_GPIO, 0);
 	enable_shc_board_pwm_pin_mux();
 #endif
 }

 static void check_button_status(void)
 {
 	ulong value;
 	gpio_direction_input(FRONT_BUTTON_GPIO);
 	value = gpio_get_value(FRONT_BUTTON_GPIO);

 	if (value == 0) {
 		printf("front button activated !\n");
 		env_set("harakiri", "1");
 	}
 }

 #if defined(CONFIG_SPL_BUILD)
 #ifdef CONFIG_SPL_OS_BOOT
 int spl_start_uboot(void)
 {
 	return 1;
 }
 #endif

 static void shc_board_early_init(void)
 {
 	shc_request_gpio();
 # ifdef CONFIG_SHC_ICT
 	/* Force all modules into enabled state for ICT testing */
 	force_modules_running();
 # else
 	/* Force all modules to enter Reset state until released by the OS */
 	force_modules_reset();
 # endif
 	leds_set_booting();
 }

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

 #define MPU_SPREADING_PERMILLE 18 /* Spread 1.8 percent */
 #define OSC	(V_OSCK/1000000)
 /* Bosch: Predivider must be fixed to 4, so N = 4-1 */
 #define MPUPLL_N        (4-1)
 /* Bosch: Fref = 24 MHz / (N+1) = 24 MHz / 4 = 6 MHz */
 #define MPUPLL_FREF (OSC / (MPUPLL_N + 1))

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

 const struct dpll_params *get_dpll_ddr_params(void)
 {
 	return &dpll_ddr_shc;
 }

 /*
  * As we enabled downspread SSC with 1.8%, the values needed to be corrected
  * such that the 20% overshoot will not lead to too high frequencies.
  * In all cases, this is achieved by subtracting one from M (6 MHz less).
  * Example: 600 MHz CPU
  *   Step size: 24 MHz OSC, N = 4 (fix) --> Fref = 6 MHz
  *   600 MHz - 6 MHz (1x Fref) = 594 MHz
  *   SSC: 594 MHz * 1.8% = 10.7 MHz SSC
  *   Overshoot: 10.7 MHz * 20 % = 2.2 MHz
  *   --> Fmax = 594 MHz + 2.2 MHz = 596.2 MHz, lower than 600 MHz --> OK!
  */
 const struct dpll_params dpll_mpu_shc_opp100 = {
 		99, MPUPLL_N, 1, -1, -1, -1, -1};

 void am33xx_spl_board_init(void)
 {
 	int sil_rev;
 	int mpu_vdd;

 	puts(BOARD_ID_STR);

 	/*
 	 * Set CORE Frequency to OPP100
 	 * Hint: DCDC3 (CORE) defaults to 1.100V (for OPP100)
 	 */
 	do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);

 	sil_rev = readl(&cdev->deviceid) >> 28;
 	if (sil_rev < 2) {
 		puts("We do not support Silicon Revisions below 2.0!\n");
 		return;
 	}

 	dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev);
 	if (i2c_probe(TPS65217_CHIP_PM))
 		return;

 	/*
 	 * Retrieve the CPU max frequency by reading the efuse
 	 * SHC-Default: 600 MHz
 	 */
 	switch (dpll_mpu_opp100.m) {
 	case MPUPLL_M_1000:
 		mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV;
 		break;
 	case MPUPLL_M_800:
 		mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV;
 		break;
 	case MPUPLL_M_720:
 		mpu_vdd = TPS65217_DCDC_VOLT_SEL_1200MV;
 		break;
 	case MPUPLL_M_600:
 		mpu_vdd = TPS65217_DCDC_VOLT_SEL_1100MV;
 		break;
 	case MPUPLL_M_300:
 		mpu_vdd = TPS65217_DCDC_VOLT_SEL_950MV;
 		break;
 	default:
 		puts("Cannot determine the frequency, failing!\n");
 		return;
 	}

 	if (tps65217_voltage_update(TPS65217_DEFDCDC2, mpu_vdd)) {
 		puts("tps65217_voltage_update failure\n");
 		return;
 	}

 	/* Set MPU Frequency to what we detected */
 	printf("MPU reference clock runs at %d MHz\n", MPUPLL_FREF);
 	printf("Setting MPU clock to %d MHz\n", MPUPLL_FREF *
 	       dpll_mpu_shc_opp100.m);
 	do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_shc_opp100);

 	/* Enable Spread Spectrum for this freq to be clean on EMI side */
 	set_mpu_spreadspectrum(MPU_SPREADING_PERMILLE);

 	/*
 	 * Using the default voltages for the PMIC (TPS65217D)
 	 * LS1 = 1.8V (VDD_1V8)
 	 * LS2 = 3.3V (VDD_3V3A)
 	 * LDO1 = 1.8V (VIO and VRTC)
 	 * LDO2 = 3.3V (VDD_3V3AUX)
 	 */
 	shc_board_early_init();
 }

 void set_uart_mux_conf(void)
 {
 	enable_uart0_pin_mux();
 }

 void set_mux_conf_regs(void)
 {
 	enable_shc_board_pin_mux();
 }

 const struct ctrl_ioregs ioregs_evmsk = {
 	.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 ddr3_shc_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_shc_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_shc_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 |
 				PHY_EN_DYN_PWRDN,
 };

 void sdram_init(void)
 {
 	/* Configure the DDR3 RAM */
 	config_ddr(400, &ioregs_evmsk, &ddr3_shc_data,
 		   &ddr3_shc_cmd_ctrl_data, &ddr3_shc_emif_reg_data, 0);
 }
 #endif

 /*
  * Basic board specific setup.  Pinmux has been handled already.
  */
 int board_init(void)
 {
 #if defined(CONFIG_HW_WATCHDOG)
 	hw_watchdog_init();
 #endif
 	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 	if (read_eeprom() < 0)
 		puts("EEPROM Content Invalid.\n");

 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
 #if defined(CONFIG_NOR) || defined(CONFIG_MTD_RAW_NAND)
 	gpmc_init();
 #endif
 	shc_request_gpio();

 	return 0;
 }

 #ifdef CONFIG_BOARD_LATE_INIT
 int board_late_init(void)
 {
 	check_button_status();
 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 	if (shc_eeprom_valid)
 		if (is_valid_ethaddr(header.mac_addr))
 			eth_env_set_enetaddr("ethaddr", header.mac_addr);
 #endif

 	return 0;
 }
 #endif

 #if defined(CONFIG_USB_ETHER) && \
 	(!defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_USB_ETHER))
 int board_eth_init(bd_t *bis)
 {
 	return usb_eth_initialize(bis);
 }
 #endif

 #ifdef CONFIG_SHOW_BOOT_PROGRESS
 static void bosch_check_reset_pin(void)
 {
 	if (readl(GPIO1_BASE + OMAP_GPIO_IRQSTATUS_SET_0) & RESET_MASK) {
 		printf("Resetting ...\n");
 		writel(RESET_MASK, GPIO1_BASE + OMAP_GPIO_IRQSTATUS_SET_0);
 		disable_interrupts();
 		reset_cpu(0);
 		/*NOTREACHED*/
 	}
 }

 static void hang_bosch(const char *cause, int code)
 {
 	int lv;

 	gpio_direction_input(RESET_GPIO);

 	/* Enable reset pin interrupt on falling edge */
 	writel(RESET_MASK, GPIO1_BASE + OMAP_GPIO_IRQSTATUS_SET_0);
 	writel(RESET_MASK, GPIO1_BASE + OMAP_GPIO_FALLINGDETECT);
 	enable_interrupts();

 	puts(cause);
 	for (;;) {
 		for (lv = 0; lv < code; lv++) {
 			bosch_check_reset_pin();
 			leds_set_failure(1);
 			__udelay(150 * 1000);
 			leds_set_failure(0);
 			__udelay(150 * 1000);
 		}
 #if defined(BLINK_CODE)
 		__udelay(300 * 1000);
 #endif
 	}
 }

 void show_boot_progress(int val)
 {
 	switch (val) {
 	case BOOTSTAGE_ID_NEED_RESET:
 		hang_bosch("need reset", 4);
 		break;
 	}
 }

 void arch_preboot_os(void)
 {
 	leds_set_finish();
 }
 #endif
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* board.c
	*
	* (C) Copyright 2016
	* Heiko Schocher, DENX Software Engineering, hs@denx.de.
	*
	* Based on:
	* Board functions for TI AM335X based boards
	*
	* Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
	*/

	#include <common.h>
	#include <cpu_func.h>
	#include <env.h>
	#include <errno.h>
	#include <init.h>
	#include <irq_func.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 <env_internal.h>
	#include <watchdog.h>
	#include "mmc.h"
	#include "board.h"

	DECLARE_GLOBAL_DATA_PTR;

	static struct shc_eeprom __attribute__((section(".data"))) header;
	static int shc_eeprom_valid;

	/*
	* 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 != HDR_MAGIC) {
	printf("Incorrect magic number (0x%x) in EEPROM\n",
	header.magic);
	return -EIO;
	}

	shc_eeprom_valid = 1;

	return 0;
	}

	static void shc_request_gpio(void)
	{
	gpio_request(LED_PWR_BL_GPIO, "LED PWR BL");
	gpio_request(LED_PWR_RD_GPIO, "LED PWR RD");
	gpio_request(RESET_GPIO, "reset");
	gpio_request(WIFI_REGEN_GPIO, "WIFI REGEN");
	gpio_request(WIFI_RST_GPIO, "WIFI rst");
	gpio_request(ZIGBEE_RST_GPIO, "ZigBee rst");
	gpio_request(BIDCOS_RST_GPIO, "BIDCOS rst");
	gpio_request(ENOC_RST_GPIO, "ENOC rst");
	#if defined CONFIG_B_SAMPLE
	gpio_request(LED_PWR_GN_GPIO, "LED PWR GN");
	gpio_request(LED_CONN_BL_GPIO, "LED CONN BL");
	gpio_request(LED_CONN_RD_GPIO, "LED CONN RD");
	gpio_request(LED_CONN_GN_GPIO, "LED CONN GN");
	#else
	gpio_request(LED_LAN_BL_GPIO, "LED LAN BL");
	gpio_request(LED_LAN_RD_GPIO, "LED LAN RD");
	gpio_request(LED_CLOUD_BL_GPIO, "LED CLOUD BL");
	gpio_request(LED_CLOUD_RD_GPIO, "LED CLOUD RD");
	gpio_request(LED_PWM_GPIO, "LED PWM");
	gpio_request(Z_WAVE_RST_GPIO, "Z WAVE rst");
	#endif
	gpio_request(BACK_BUTTON_GPIO, "Back button");
	gpio_request(FRONT_BUTTON_GPIO, "Front button");
	}

	/*
	* Function which forces all installed modules into running state for ICT
	* testing. Called by SPL.
	*/
	static void __maybe_unused force_modules_running(void)
	{
	/* Wi-Fi power regulator enable - high = enabled */
	gpio_direction_output(WIFI_REGEN_GPIO, 1);
	/*
	* Wait for Wi-Fi power regulator to reach a stable voltage
	* (soft-start time, max. 350 µs)
	*/
	__udelay(350);

	/* Wi-Fi module reset - high = running */
	gpio_direction_output(WIFI_RST_GPIO, 1);

	/* ZigBee reset - high = running */
	gpio_direction_output(ZIGBEE_RST_GPIO, 1);

	/* BidCos reset - high = running */
	gpio_direction_output(BIDCOS_RST_GPIO, 1);

	#if !defined(CONFIG_B_SAMPLE)
	/* Z-Wave reset - high = running */
	gpio_direction_output(Z_WAVE_RST_GPIO, 1);
	#endif

	/* EnOcean reset - low = running */
	gpio_direction_output(ENOC_RST_GPIO, 0);
	}

	/*
	* Function which forces all installed modules into reset - to be released by
	* the OS, called by SPL
	*/
	static void __maybe_unused force_modules_reset(void)
	{
	/* Wi-Fi module reset - low = reset */
	gpio_direction_output(WIFI_RST_GPIO, 0);

	/* Wi-Fi power regulator enable - low = disabled */
	gpio_direction_output(WIFI_REGEN_GPIO, 0);

	/* ZigBee reset - low = reset */
	gpio_direction_output(ZIGBEE_RST_GPIO, 0);

	/* BidCos reset - low = reset */
	/gpio_direction_output(BIDCOS_RST_GPIO, 0);/

	#if !defined(CONFIG_B_SAMPLE)
	/* Z-Wave reset - low = reset */
	gpio_direction_output(Z_WAVE_RST_GPIO, 0);
	#endif

	/* EnOcean reset - high = reset*/
	gpio_direction_output(ENOC_RST_GPIO, 1);
	}

	/*
	* Function to set the LEDs in the state "Bootloader booting"
	*/
	static void __maybe_unused leds_set_booting(void)
	{
	#if defined(CONFIG_B_SAMPLE)

	/* Turn all red LEDs on */
	gpio_direction_output(LED_PWR_RD_GPIO, 1);
	gpio_direction_output(LED_CONN_RD_GPIO, 1);

	#else /* All other SHCs starting with B2-Sample */
	/* Set the PWM GPIO */
	gpio_direction_output(LED_PWM_GPIO, 1);
	/* Turn all red LEDs on */
	gpio_direction_output(LED_PWR_RD_GPIO, 1);
	gpio_direction_output(LED_LAN_RD_GPIO, 1);
	gpio_direction_output(LED_CLOUD_RD_GPIO, 1);

	#endif
	}

	/*
	* Function to set the LEDs in the state "Bootloader error"
	*/
	static void leds_set_failure(int state)
	{
	#if defined(CONFIG_B_SAMPLE)
	/* Turn all blue and green LEDs off */
	gpio_set_value(LED_PWR_BL_GPIO, 0);
	gpio_set_value(LED_PWR_GN_GPIO, 0);
	gpio_set_value(LED_CONN_BL_GPIO, 0);
	gpio_set_value(LED_CONN_GN_GPIO, 0);

	/* Turn all red LEDs to 'state' */
	gpio_set_value(LED_PWR_RD_GPIO, state);
	gpio_set_value(LED_CONN_RD_GPIO, state);

	#else /* All other SHCs starting with B2-Sample */
	/* Set the PWM GPIO */
	gpio_direction_output(LED_PWM_GPIO, 1);

	/* Turn all blue LEDs off */
	gpio_set_value(LED_PWR_BL_GPIO, 0);
	gpio_set_value(LED_LAN_BL_GPIO, 0);
	gpio_set_value(LED_CLOUD_BL_GPIO, 0);

	/* Turn all red LEDs to 'state' */
	gpio_set_value(LED_PWR_RD_GPIO, state);
	gpio_set_value(LED_LAN_RD_GPIO, state);
	gpio_set_value(LED_CLOUD_RD_GPIO, state);
	#endif
	}

	/*
	* Function to set the LEDs in the state "Bootloader finished"
	*/
	static void leds_set_finish(void)
	{
	#if defined(CONFIG_B_SAMPLE)
	/* Turn all LEDs off */
	gpio_set_value(LED_PWR_BL_GPIO, 0);
	gpio_set_value(LED_PWR_RD_GPIO, 0);
	gpio_set_value(LED_PWR_GN_GPIO, 0);
	gpio_set_value(LED_CONN_BL_GPIO, 0);
	gpio_set_value(LED_CONN_RD_GPIO, 0);
	gpio_set_value(LED_CONN_GN_GPIO, 0);
	#else /* All other SHCs starting with B2-Sample */
	/* Turn all LEDs off */
	gpio_set_value(LED_PWR_BL_GPIO, 0);
	gpio_set_value(LED_PWR_RD_GPIO, 0);
	gpio_set_value(LED_LAN_BL_GPIO, 0);
	gpio_set_value(LED_LAN_RD_GPIO, 0);
	gpio_set_value(LED_CLOUD_BL_GPIO, 0);
	gpio_set_value(LED_CLOUD_RD_GPIO, 0);

	/* Turn off the PWM GPIO and mux it to EHRPWM */
	gpio_set_value(LED_PWM_GPIO, 0);
	enable_shc_board_pwm_pin_mux();
	#endif
	}

	static void check_button_status(void)
	{
	ulong value;
	gpio_direction_input(FRONT_BUTTON_GPIO);
	value = gpio_get_value(FRONT_BUTTON_GPIO);

	if (value == 0) {
	printf("front button activated !\n");
	env_set("harakiri", "1");
	}
	}

	#if defined(CONFIG_SPL_BUILD)
	#ifdef CONFIG_SPL_OS_BOOT
	int spl_start_uboot(void)
	{
	return 1;
	}
	#endif

	static void shc_board_early_init(void)
	{
	shc_request_gpio();
	# ifdef CONFIG_SHC_ICT
	/* Force all modules into enabled state for ICT testing */
	force_modules_running();
	# else
	/* Force all modules to enter Reset state until released by the OS */
	force_modules_reset();
	# endif
	leds_set_booting();
	}

	static struct ctrl_dev cdev = (struct ctrl_dev )CTRL_DEVICE_BASE;

	#define MPU_SPREADING_PERMILLE 18 /* Spread 1.8 percent */
	#define OSC (V_OSCK/1000000)
	/* Bosch: Predivider must be fixed to 4, so N = 4-1 */
	#define MPUPLL_N (4-1)
	/* Bosch: Fref = 24 MHz / (N+1) = 24 MHz / 4 = 6 MHz */
	#define MPUPLL_FREF (OSC / (MPUPLL_N + 1))

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

	const struct dpll_params *get_dpll_ddr_params(void)
	{
	return &dpll_ddr_shc;
	}

	/*
	* As we enabled downspread SSC with 1.8%, the values needed to be corrected
	* such that the 20% overshoot will not lead to too high frequencies.
	* In all cases, this is achieved by subtracting one from M (6 MHz less).
	* Example: 600 MHz CPU
	* Step size: 24 MHz OSC, N = 4 (fix) --> Fref = 6 MHz
	* 600 MHz - 6 MHz (1x Fref) = 594 MHz
	* SSC: 594 MHz * 1.8% = 10.7 MHz SSC
	* Overshoot: 10.7 MHz * 20 % = 2.2 MHz
	* --> Fmax = 594 MHz + 2.2 MHz = 596.2 MHz, lower than 600 MHz --> OK!
	*/
	const struct dpll_params dpll_mpu_shc_opp100 = {
	99, MPUPLL_N, 1, -1, -1, -1, -1};

	void am33xx_spl_board_init(void)
	{
	int sil_rev;
	int mpu_vdd;

	puts(BOARD_ID_STR);

	/*
	* Set CORE Frequency to OPP100
	* Hint: DCDC3 (CORE) defaults to 1.100V (for OPP100)
	*/
	do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);

	sil_rev = readl(&cdev->deviceid) >> 28;
	if (sil_rev < 2) {
	puts("We do not support Silicon Revisions below 2.0!\n");
	return;
	}

	dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev);
	if (i2c_probe(TPS65217_CHIP_PM))
	return;

	/*
	* Retrieve the CPU max frequency by reading the efuse
	* SHC-Default: 600 MHz
	*/
	switch (dpll_mpu_opp100.m) {
	case MPUPLL_M_1000:
	mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV;
	break;
	case MPUPLL_M_800:
	mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV;
	break;
	case MPUPLL_M_720:
	mpu_vdd = TPS65217_DCDC_VOLT_SEL_1200MV;
	break;
	case MPUPLL_M_600:
	mpu_vdd = TPS65217_DCDC_VOLT_SEL_1100MV;
	break;
	case MPUPLL_M_300:
	mpu_vdd = TPS65217_DCDC_VOLT_SEL_950MV;
	break;
	default:
	puts("Cannot determine the frequency, failing!\n");
	return;
	}

	if (tps65217_voltage_update(TPS65217_DEFDCDC2, mpu_vdd)) {
	puts("tps65217_voltage_update failure\n");
	return;
	}

	/* Set MPU Frequency to what we detected */
	printf("MPU reference clock runs at %d MHz\n", MPUPLL_FREF);
	printf("Setting MPU clock to %d MHz\n", MPUPLL_FREF *
	dpll_mpu_shc_opp100.m);
	do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_shc_opp100);

	/* Enable Spread Spectrum for this freq to be clean on EMI side */
	set_mpu_spreadspectrum(MPU_SPREADING_PERMILLE);

	/*
	* Using the default voltages for the PMIC (TPS65217D)
	* LS1 = 1.8V (VDD_1V8)
	* LS2 = 3.3V (VDD_3V3A)
	* LDO1 = 1.8V (VIO and VRTC)
	* LDO2 = 3.3V (VDD_3V3AUX)
	*/
	shc_board_early_init();
	}

	void set_uart_mux_conf(void)
	{
	enable_uart0_pin_mux();
	}

	void set_mux_conf_regs(void)
	{
	enable_shc_board_pin_mux();
	}

	const struct ctrl_ioregs ioregs_evmsk = {
	.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 ddr3_shc_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_shc_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_shc_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 \|
	PHY_EN_DYN_PWRDN,
	};

	void sdram_init(void)
	{
	/* Configure the DDR3 RAM */
	config_ddr(400, &ioregs_evmsk, &ddr3_shc_data,
	&ddr3_shc_cmd_ctrl_data, &ddr3_shc_emif_reg_data, 0);
	}
	#endif

	/*
	* Basic board specific setup. Pinmux has been handled already.
	*/
	int board_init(void)
	{
	#if defined(CONFIG_HW_WATCHDOG)
	hw_watchdog_init();
	#endif
	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
	if (read_eeprom() < 0)
	puts("EEPROM Content Invalid.\n");

	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
	#if defined(CONFIG_NOR) \|\| defined(CONFIG_MTD_RAW_NAND)
	gpmc_init();
	#endif
	shc_request_gpio();

	return 0;
	}

	#ifdef CONFIG_BOARD_LATE_INIT
	int board_late_init(void)
	{
	check_button_status();
	#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	if (shc_eeprom_valid)
	if (is_valid_ethaddr(header.mac_addr))
	eth_env_set_enetaddr("ethaddr", header.mac_addr);
	#endif

	return 0;
	}
	#endif

	#if defined(CONFIG_USB_ETHER) && \
	(!defined(CONFIG_SPL_BUILD) \|\| defined(CONFIG_SPL_USB_ETHER))
	int board_eth_init(bd_t *bis)
	{
	return usb_eth_initialize(bis);
	}
	#endif

	#ifdef CONFIG_SHOW_BOOT_PROGRESS
	static void bosch_check_reset_pin(void)
	{
	if (readl(GPIO1_BASE + OMAP_GPIO_IRQSTATUS_SET_0) & RESET_MASK) {
	printf("Resetting ...\n");
	writel(RESET_MASK, GPIO1_BASE + OMAP_GPIO_IRQSTATUS_SET_0);
	disable_interrupts();
	reset_cpu(0);
	/NOTREACHED/
	}
	}

	static void hang_bosch(const char *cause, int code)
	{
	int lv;

	gpio_direction_input(RESET_GPIO);

	/* Enable reset pin interrupt on falling edge */
	writel(RESET_MASK, GPIO1_BASE + OMAP_GPIO_IRQSTATUS_SET_0);
	writel(RESET_MASK, GPIO1_BASE + OMAP_GPIO_FALLINGDETECT);
	enable_interrupts();

	puts(cause);
	for (;;) {
	for (lv = 0; lv < code; lv++) {
	bosch_check_reset_pin();
	leds_set_failure(1);
	__udelay(150 * 1000);
	leds_set_failure(0);
	__udelay(150 * 1000);
	}
	#if defined(BLINK_CODE)
	__udelay(300 * 1000);
	#endif
	}
	}

	void show_boot_progress(int val)
	{
	switch (val) {
	case BOOTSTAGE_ID_NEED_RESET:
	hang_bosch("need reset", 4);
	break;
	}
	}

	void arch_preboot_os(void)
	{
	leds_set_finish();
	}
	#endif