board/st/stm32mp1/stm32mp1.c - platform/external/u-boot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
 /*
  * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
  */
 #include <common.h>
 #include <adc.h>
 #include <bootm.h>
 #include <config.h>
 #include <clk.h>
 #include <dm.h>
 #include <env.h>
 #include <environment.h>
 #include <g_dnl.h>
 #include <generic-phy.h>
 #include <i2c.h>
 #include <led.h>
 #include <misc.h>
 #include <mtd.h>
 #include <mtd_node.h>
 #include <phy.h>
 #include <reset.h>
 #include <syscon.h>
 #include <usb.h>
 #include <asm/io.h>
 #include <asm/gpio.h>
 #include <asm/arch/stm32.h>
 #include <asm/arch/sys_proto.h>
 #include <jffs2/load_kernel.h>
 #include <power/regulator.h>
 #include <usb/dwc2_udc.h>

 /* SYSCFG registers */
 #define SYSCFG_BOOTR		0x00
 #define SYSCFG_PMCSETR		0x04
 #define SYSCFG_IOCTRLSETR	0x18
 #define SYSCFG_ICNR		0x1C
 #define SYSCFG_CMPCR		0x20
 #define SYSCFG_CMPENSETR	0x24
 #define SYSCFG_PMCCLRR		0x44

 #define SYSCFG_BOOTR_BOOT_MASK		GENMASK(2, 0)
 #define SYSCFG_BOOTR_BOOTPD_SHIFT	4

 #define SYSCFG_IOCTRLSETR_HSLVEN_TRACE		BIT(0)
 #define SYSCFG_IOCTRLSETR_HSLVEN_QUADSPI	BIT(1)
 #define SYSCFG_IOCTRLSETR_HSLVEN_ETH		BIT(2)
 #define SYSCFG_IOCTRLSETR_HSLVEN_SDMMC		BIT(3)
 #define SYSCFG_IOCTRLSETR_HSLVEN_SPI		BIT(4)

 #define SYSCFG_CMPCR_SW_CTRL		BIT(1)
 #define SYSCFG_CMPCR_READY		BIT(8)

 #define SYSCFG_CMPENSETR_MPU_EN		BIT(0)

 #define SYSCFG_PMCSETR_ETH_CLK_SEL	BIT(16)
 #define SYSCFG_PMCSETR_ETH_REF_CLK_SEL	BIT(17)

 #define SYSCFG_PMCSETR_ETH_SELMII	BIT(20)

 #define SYSCFG_PMCSETR_ETH_SEL_MASK	GENMASK(23, 21)
 #define SYSCFG_PMCSETR_ETH_SEL_GMII_MII	0
 #define SYSCFG_PMCSETR_ETH_SEL_RGMII	BIT(21)
 #define SYSCFG_PMCSETR_ETH_SEL_RMII	BIT(23)

 /*
  * Get a global data pointer
  */
 DECLARE_GLOBAL_DATA_PTR;

 #define USB_LOW_THRESHOLD_UV		200000
 #define USB_WARNING_LOW_THRESHOLD_UV	660000
 #define USB_START_LOW_THRESHOLD_UV	1230000
 #define USB_START_HIGH_THRESHOLD_UV	2150000

 int checkboard(void)
 {
 	int ret;
 	char *mode;
 	u32 otp;
 	struct udevice *dev;
 	const char *fdt_compat;
 	int fdt_compat_len;

 	if (IS_ENABLED(CONFIG_STM32MP1_OPTEE))
 		mode = "trusted with OP-TEE";
 	else if (IS_ENABLED(CONFIG_STM32MP1_TRUSTED))
 		mode = "trusted";
 	else
 		mode = "basic";

 	printf("Board: stm32mp1 in %s mode", mode);
 	fdt_compat = fdt_getprop(gd->fdt_blob, 0, "compatible",
 				 &fdt_compat_len);
 	if (fdt_compat && fdt_compat_len)
 		printf(" (%s)", fdt_compat);
 	puts("\n");

 	ret = uclass_get_device_by_driver(UCLASS_MISC,
 					  DM_GET_DRIVER(stm32mp_bsec),
 					  &dev);

 	if (!ret)
 		ret = misc_read(dev, STM32_BSEC_SHADOW(BSEC_OTP_BOARD),
 				&otp, sizeof(otp));
 	if (!ret && otp) {
 		printf("Board: MB%04x Var%d Rev.%c-%02d\n",
 		       otp >> 16,
 		       (otp >> 12) & 0xF,
 		       ((otp >> 8) & 0xF) - 1 + 'A',
 		       otp & 0xF);
 	}

 	return 0;
 }

 static void board_key_check(void)
 {
 #if defined(CONFIG_FASTBOOT) || defined(CONFIG_CMD_STM32PROG)
 	ofnode node;
 	struct gpio_desc gpio;
 	enum forced_boot_mode boot_mode = BOOT_NORMAL;

 	node = ofnode_path("/config");
 	if (!ofnode_valid(node)) {
 		debug("%s: no /config node?\n", __func__);
 		return;
 	}
 #ifdef CONFIG_FASTBOOT
 	if (gpio_request_by_name_nodev(node, "st,fastboot-gpios", 0,
 				       &gpio, GPIOD_IS_IN)) {
 		debug("%s: could not find a /config/st,fastboot-gpios\n",
 		      __func__);
 	} else {
 		if (dm_gpio_get_value(&gpio)) {
 			puts("Fastboot key pressed, ");
 			boot_mode = BOOT_FASTBOOT;
 		}

 		dm_gpio_free(NULL, &gpio);
 	}
 #endif
 #ifdef CONFIG_CMD_STM32PROG
 	if (gpio_request_by_name_nodev(node, "st,stm32prog-gpios", 0,
 				       &gpio, GPIOD_IS_IN)) {
 		debug("%s: could not find a /config/st,stm32prog-gpios\n",
 		      __func__);
 	} else {
 		if (dm_gpio_get_value(&gpio)) {
 			puts("STM32Programmer key pressed, ");
 			boot_mode = BOOT_STM32PROG;
 		}
 		dm_gpio_free(NULL, &gpio);
 	}
 #endif

 	if (boot_mode != BOOT_NORMAL) {
 		puts("entering download mode...\n");
 		clrsetbits_le32(TAMP_BOOT_CONTEXT,
 				TAMP_BOOT_FORCED_MASK,
 				boot_mode);
 	}
 #endif
 }

 #if defined(CONFIG_USB_GADGET) && defined(CONFIG_USB_GADGET_DWC2_OTG)

 /* STMicroelectronics STUSB1600 Type-C controller */
 #define STUSB1600_CC_CONNECTION_STATUS		0x0E

 /* STUSB1600_CC_CONNECTION_STATUS bitfields */
 #define STUSB1600_CC_ATTACH			BIT(0)

 static int stusb1600_init(struct udevice **dev_stusb1600)
 {
 	ofnode node;
 	struct udevice *dev, *bus;
 	int ret;
 	u32 chip_addr;

 	*dev_stusb1600 = NULL;

 	/* if node stusb1600 is present, means DK1 or DK2 board */
 	node = ofnode_by_compatible(ofnode_null(), "st,stusb1600");
 	if (!ofnode_valid(node))
 		return -ENODEV;

 	ret = ofnode_read_u32(node, "reg", &chip_addr);
 	if (ret)
 		return -EINVAL;

 	ret = uclass_get_device_by_ofnode(UCLASS_I2C, ofnode_get_parent(node),
 					  &bus);
 	if (ret) {
 		printf("bus for stusb1600 not found\n");
 		return -ENODEV;
 	}

 	ret = dm_i2c_probe(bus, chip_addr, 0, &dev);
 	if (!ret)
 		*dev_stusb1600 = dev;

 	return ret;
 }

 static int stusb1600_cable_connected(struct udevice *dev)
 {
 	u8 status;

 	if (dm_i2c_read(dev, STUSB1600_CC_CONNECTION_STATUS, &status, 1))
 		return 0;

 	return status & STUSB1600_CC_ATTACH;
 }

 #include <usb/dwc2_udc.h>
 int g_dnl_board_usb_cable_connected(void)
 {
 	struct udevice *stusb1600;
 	struct udevice *dwc2_udc_otg;
 	int ret;

 	if (!stusb1600_init(&stusb1600))
 		return stusb1600_cable_connected(stusb1600);

 	ret = uclass_get_device_by_driver(UCLASS_USB_GADGET_GENERIC,
 					  DM_GET_DRIVER(dwc2_udc_otg),
 					  &dwc2_udc_otg);
 	if (!ret)
 		debug("dwc2_udc_otg init failed\n");

 	return dwc2_udc_B_session_valid(dwc2_udc_otg);
 }
 #endif /* CONFIG_USB_GADGET */

 static int get_led(struct udevice **dev, char *led_string)
 {
 	char *led_name;
 	int ret;

 	led_name = fdtdec_get_config_string(gd->fdt_blob, led_string);
 	if (!led_name) {
 		pr_debug("%s: could not find %s config string\n",
 			 __func__, led_string);
 		return -ENOENT;
 	}
 	ret = led_get_by_label(led_name, dev);
 	if (ret) {
 		debug("%s: get=%d\n", __func__, ret);
 		return ret;
 	}

 	return 0;
 }

 static int setup_led(enum led_state_t cmd)
 {
 	struct udevice *dev;
 	int ret;

 	ret = get_led(&dev, "u-boot,boot-led");
 	if (ret)
 		return ret;

 	ret = led_set_state(dev, cmd);
 	return ret;
 }

 static int board_check_usb_power(void)
 {
 	struct ofnode_phandle_args adc_args;
 	struct udevice *adc;
 	struct udevice *led;
 	ofnode node;
 	unsigned int raw;
 	int max_uV = 0;
 	int min_uV = USB_START_HIGH_THRESHOLD_UV;
 	int ret, uV, adc_count;
 	u32 nb_blink;
 	u8 i;
 	node = ofnode_path("/config");
 	if (!ofnode_valid(node)) {
 		debug("%s: no /config node?\n", __func__);
 		return -ENOENT;
 	}

 	/*
 	 * Retrieve the ADC channels devices and get measurement
 	 * for each of them
 	 */
 	adc_count = ofnode_count_phandle_with_args(node, "st,adc_usb_pd",
 						   "#io-channel-cells");
 	if (adc_count < 0) {
 		if (adc_count == -ENOENT)
 			return 0;

 		pr_err("%s: can't find adc channel (%d)\n", __func__,
 		       adc_count);

 		return adc_count;
 	}

 	for (i = 0; i < adc_count; i++) {
 		if (ofnode_parse_phandle_with_args(node, "st,adc_usb_pd",
 						   "#io-channel-cells", 0, i,
 						   &adc_args)) {
 			pr_debug("%s: can't find /config/st,adc_usb_pd\n",
 				 __func__);
 			return 0;
 		}

 		ret = uclass_get_device_by_ofnode(UCLASS_ADC, adc_args.node,
 						  &adc);

 		if (ret) {
 			pr_err("%s: Can't get adc device(%d)\n", __func__,
 			       ret);
 			return ret;
 		}

 		ret = adc_channel_single_shot(adc->name, adc_args.args[0],
 					      &raw);
 		if (ret) {
 			pr_err("%s: single shot failed for %s[%d]!\n",
 			       __func__, adc->name, adc_args.args[0]);
 			return ret;
 		}
 		/* Convert to uV */
 		if (!adc_raw_to_uV(adc, raw, &uV)) {
 			if (uV > max_uV)
 				max_uV = uV;
 			if (uV < min_uV)
 				min_uV = uV;
 			pr_debug("%s: %s[%02d] = %u, %d uV\n", __func__,
 				 adc->name, adc_args.args[0], raw, uV);
 		} else {
 			pr_err("%s: Can't get uV value for %s[%d]\n",
 			       __func__, adc->name, adc_args.args[0]);
 		}
 	}

 	/*
 	 * If highest value is inside 1.23 Volts and 2.10 Volts, that means
 	 * board is plugged on an USB-C 3A power supply and boot process can
 	 * continue.
 	 */
 	if (max_uV > USB_START_LOW_THRESHOLD_UV &&
 	    max_uV <= USB_START_HIGH_THRESHOLD_UV &&
 	    min_uV <= USB_LOW_THRESHOLD_UV)
 		return 0;

 	pr_err("****************************************************\n");

 	/*
 	 * If highest and lowest value are either both below
 	 * USB_LOW_THRESHOLD_UV or both above USB_LOW_THRESHOLD_UV, that
 	 * means USB TYPE-C is in unattached mode, this is an issue, make
 	 * u-boot,error-led blinking and stop boot process.
 	 */
 	if ((max_uV > USB_LOW_THRESHOLD_UV &&
 	     min_uV > USB_LOW_THRESHOLD_UV) ||
 	     (max_uV <= USB_LOW_THRESHOLD_UV &&
 	     min_uV <= USB_LOW_THRESHOLD_UV)) {
 		pr_err("* ERROR USB TYPE-C connection in unattached mode   *\n");
 		pr_err("* Check that USB TYPE-C cable is correctly plugged *\n");
 		/* with 125ms interval, led will blink for 17.02 years ....*/
 		nb_blink = U32_MAX;
 	}

 	if (max_uV > USB_LOW_THRESHOLD_UV &&
 	    max_uV <= USB_WARNING_LOW_THRESHOLD_UV &&
 	    min_uV <= USB_LOW_THRESHOLD_UV) {
 		pr_err("*        WARNING 500mA power supply detected       *\n");
 		nb_blink = 2;
 	}

 	if (max_uV > USB_WARNING_LOW_THRESHOLD_UV &&
 	    max_uV <= USB_START_LOW_THRESHOLD_UV &&
 	    min_uV <= USB_LOW_THRESHOLD_UV) {
 		pr_err("*       WARNING 1.5mA power supply detected        *\n");
 		nb_blink = 3;
 	}

 	/*
 	 * If highest value is above 2.15 Volts that means that the USB TypeC
 	 * supplies more than 3 Amp, this is not compliant with TypeC specification
 	 */
 	if (max_uV > USB_START_HIGH_THRESHOLD_UV) {
 		pr_err("*      USB TYPE-C charger not compliant with       *\n");
 		pr_err("*                   specification                  *\n");
 		pr_err("****************************************************\n\n");
 		/* with 125ms interval, led will blink for 17.02 years ....*/
 		nb_blink = U32_MAX;
 	} else {
 		pr_err("*     Current too low, use a 3A power supply!      *\n");
 		pr_err("****************************************************\n\n");
 	}

 	ret = get_led(&led, "u-boot,error-led");
 	if (ret) {
 		/* in unattached case, the boot process must be stopped */
 		if (nb_blink == U32_MAX)
 			hang();
 		return ret;
 	}

 	/* make u-boot,error-led blinking */
 	for (i = 0; i < nb_blink * 2; i++) {
 		led_set_state(led, LEDST_TOGGLE);
 		mdelay(125);
 	}
 	led_set_state(led, LEDST_ON);

 	return 0;
 }

 static void sysconf_init(void)
 {
 #ifndef CONFIG_STM32MP1_TRUSTED
 	u8 *syscfg;
 #ifdef CONFIG_DM_REGULATOR
 	struct udevice *pwr_dev;
 	struct udevice *pwr_reg;
 	struct udevice *dev;
 	int ret;
 	u32 otp = 0;
 #endif
 	u32 bootr;

 	syscfg = (u8 *)syscon_get_first_range(STM32MP_SYSCON_SYSCFG);

 	/* interconnect update : select master using the port 1 */
 	/* LTDC = AXI_M9 */
 	/* GPU  = AXI_M8 */
 	/* today information is hardcoded in U-Boot */
 	writel(BIT(9), syscfg + SYSCFG_ICNR);

 	/* disable Pull-Down for boot pin connected to VDD */
 	bootr = readl(syscfg + SYSCFG_BOOTR);
 	bootr &= ~(SYSCFG_BOOTR_BOOT_MASK << SYSCFG_BOOTR_BOOTPD_SHIFT);
 	bootr |= (bootr & SYSCFG_BOOTR_BOOT_MASK) << SYSCFG_BOOTR_BOOTPD_SHIFT;
 	writel(bootr, syscfg + SYSCFG_BOOTR);

 #ifdef CONFIG_DM_REGULATOR
 	/* High Speed Low Voltage Pad mode Enable for SPI, SDMMC, ETH, QSPI
 	 * and TRACE. Needed above ~50MHz and conditioned by AFMUX selection.
 	 * The customer will have to disable this for low frequencies
 	 * or if AFMUX is selected but the function not used, typically for
 	 * TRACE. Otherwise, impact on power consumption.
 	 *
 	 * WARNING:
 	 *   enabling High Speed mode while VDD>2.7V
 	 *   with the OTP product_below_2v5 (OTP 18, BIT 13)
 	 *   erroneously set to 1 can damage the IC!
 	 *   => U-Boot set the register only if VDD < 2.7V (in DT)
 	 *      but this value need to be consistent with board design
 	 */
 	ret = syscon_get_by_driver_data(STM32MP_SYSCON_PWR, &pwr_dev);
 	if (!ret) {
 		ret = uclass_get_device_by_driver(UCLASS_MISC,
 						  DM_GET_DRIVER(stm32mp_bsec),
 						  &dev);
 		if (ret) {
 			pr_err("Can't find stm32mp_bsec driver\n");
 			return;
 		}

 		ret = misc_read(dev, STM32_BSEC_SHADOW(18), &otp, 4);
 		if (!ret)
 			otp = otp & BIT(13);

 		/* get VDD = pwr-supply */
 		ret = device_get_supply_regulator(pwr_dev, "pwr-supply",
 						  &pwr_reg);

 		/* check if VDD is Low Voltage */
 		if (!ret) {
 			if (regulator_get_value(pwr_reg) < 2700000) {
 				writel(SYSCFG_IOCTRLSETR_HSLVEN_TRACE |
 				       SYSCFG_IOCTRLSETR_HSLVEN_QUADSPI |
 				       SYSCFG_IOCTRLSETR_HSLVEN_ETH |
 				       SYSCFG_IOCTRLSETR_HSLVEN_SDMMC |
 				       SYSCFG_IOCTRLSETR_HSLVEN_SPI,
 				       syscfg + SYSCFG_IOCTRLSETR);

 				if (!otp)
 					pr_err("product_below_2v5=0: HSLVEN protected by HW\n");
 			} else {
 				if (otp)
 					pr_err("product_below_2v5=1: HSLVEN update is destructive, no update as VDD>2.7V\n");
 			}
 		} else {
 			debug("VDD unknown");
 		}
 	}
 #endif

 	/* activate automatic I/O compensation
 	 * warning: need to ensure CSI enabled and ready in clock driver
 	 */
 	writel(SYSCFG_CMPENSETR_MPU_EN, syscfg + SYSCFG_CMPENSETR);

 	while (!(readl(syscfg + SYSCFG_CMPCR) & SYSCFG_CMPCR_READY))
 		;
 	clrbits_le32(syscfg + SYSCFG_CMPCR, SYSCFG_CMPCR_SW_CTRL);
 #endif
 }

 /* board dependent setup after realloc */
 int board_init(void)
 {
 	struct udevice *dev;

 	/* address of boot parameters */
 	gd->bd->bi_boot_params = STM32_DDR_BASE + 0x100;

 	/* probe all PINCTRL for hog */
 	for (uclass_first_device(UCLASS_PINCTRL, &dev);
 	     dev;
 	     uclass_next_device(&dev)) {
 		pr_debug("probe pincontrol = %s\n", dev->name);
 	}

 	board_key_check();

 #ifdef CONFIG_DM_REGULATOR
 	regulators_enable_boot_on(_DEBUG);
 #endif

 	sysconf_init();

 	if (IS_ENABLED(CONFIG_LED))
 		led_default_state();

 	return 0;
 }

 int board_late_init(void)
 {
 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 	const void *fdt_compat;
 	int fdt_compat_len;

 	fdt_compat = fdt_getprop(gd->fdt_blob, 0, "compatible",
 				 &fdt_compat_len);
 	if (fdt_compat && fdt_compat_len) {
 		if (strncmp(fdt_compat, "st,", 3) != 0)
 			env_set("board_name", fdt_compat);
 		else
 			env_set("board_name", fdt_compat + 3);
 	}
 #endif

 	/* for DK1/DK2 boards */
 	board_check_usb_power();

 	return 0;
 }

 void board_quiesce_devices(void)
 {
 	setup_led(LEDST_OFF);
 }

 /* board interface eth init */
 /* this is a weak define that we are overriding */
 int board_interface_eth_init(phy_interface_t interface_type,
 			     bool eth_clk_sel_reg, bool eth_ref_clk_sel_reg)
 {
 	u8 *syscfg;
 	u32 value;

 	syscfg = (u8 *)syscon_get_first_range(STM32MP_SYSCON_SYSCFG);

 	if (!syscfg)
 		return -ENODEV;

 	switch (interface_type) {
 	case PHY_INTERFACE_MODE_MII:
 		value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII |
 			SYSCFG_PMCSETR_ETH_REF_CLK_SEL;
 		debug("%s: PHY_INTERFACE_MODE_MII\n", __func__);
 		break;
 	case PHY_INTERFACE_MODE_GMII:
 		if (eth_clk_sel_reg)
 			value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII |
 				SYSCFG_PMCSETR_ETH_CLK_SEL;
 		else
 			value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII;
 		debug("%s: PHY_INTERFACE_MODE_GMII\n", __func__);
 		break;
 	case PHY_INTERFACE_MODE_RMII:
 		if (eth_ref_clk_sel_reg)
 			value = SYSCFG_PMCSETR_ETH_SEL_RMII |
 				SYSCFG_PMCSETR_ETH_REF_CLK_SEL;
 		else
 			value = SYSCFG_PMCSETR_ETH_SEL_RMII;
 		debug("%s: PHY_INTERFACE_MODE_RMII\n", __func__);
 		break;
 	case PHY_INTERFACE_MODE_RGMII:
 	case PHY_INTERFACE_MODE_RGMII_ID:
 	case PHY_INTERFACE_MODE_RGMII_RXID:
 	case PHY_INTERFACE_MODE_RGMII_TXID:
 		if (eth_clk_sel_reg)
 			value = SYSCFG_PMCSETR_ETH_SEL_RGMII |
 				SYSCFG_PMCSETR_ETH_CLK_SEL;
 		else
 			value = SYSCFG_PMCSETR_ETH_SEL_RGMII;
 		debug("%s: PHY_INTERFACE_MODE_RGMII\n", __func__);
 		break;
 	default:
 		debug("%s: Do not manage %d interface\n",
 		      __func__, interface_type);
 		/* Do not manage others interfaces */
 		return -EINVAL;
 	}

 	/* clear and set ETH configuration bits */
 	writel(SYSCFG_PMCSETR_ETH_SEL_MASK | SYSCFG_PMCSETR_ETH_SELMII |
 	       SYSCFG_PMCSETR_ETH_REF_CLK_SEL | SYSCFG_PMCSETR_ETH_CLK_SEL,
 	       syscfg + SYSCFG_PMCCLRR);
 	writel(value, syscfg + SYSCFG_PMCSETR);

 	return 0;
 }

 enum env_location env_get_location(enum env_operation op, int prio)
 {
 	u32 bootmode = get_bootmode();

 	if (prio)
 		return ENVL_UNKNOWN;

 	switch (bootmode & TAMP_BOOT_DEVICE_MASK) {
 #ifdef CONFIG_ENV_IS_IN_EXT4
 	case BOOT_FLASH_SD:
 	case BOOT_FLASH_EMMC:
 		return ENVL_EXT4;
 #endif
 #ifdef CONFIG_ENV_IS_IN_UBI
 	case BOOT_FLASH_NAND:
 		return ENVL_UBI;
 #endif
 #ifdef CONFIG_ENV_IS_IN_SPI_FLASH
 	case BOOT_FLASH_NOR:
 		return ENVL_SPI_FLASH;
 #endif
 	default:
 		return ENVL_NOWHERE;
 	}
 }

 #if defined(CONFIG_ENV_IS_IN_EXT4)
 const char *env_ext4_get_intf(void)
 {
 	u32 bootmode = get_bootmode();

 	switch (bootmode & TAMP_BOOT_DEVICE_MASK) {
 	case BOOT_FLASH_SD:
 	case BOOT_FLASH_EMMC:
 		return "mmc";
 	default:
 		return "";
 	}
 }

 const char *env_ext4_get_dev_part(void)
 {
 	static char *const dev_part[] = {"0:auto", "1:auto", "2:auto"};
 	u32 bootmode = get_bootmode();

 	return dev_part[(bootmode & TAMP_BOOT_INSTANCE_MASK) - 1];
 }
 #endif

 #ifdef CONFIG_SYS_MTDPARTS_RUNTIME

 #define MTDPARTS_LEN		256
 #define MTDIDS_LEN		128

 /**
  * The mtdparts_nand0 and mtdparts_nor0 variable tends to be long.
  * If we need to access it before the env is relocated, then we need
  * to use our own stack buffer. gd->env_buf will be too small.
  *
  * @param buf temporary buffer pointer MTDPARTS_LEN long
  * @return mtdparts variable string, NULL if not found
  */
 static const char *env_get_mtdparts(const char *str, char *buf)
 {
 	if (gd->flags & GD_FLG_ENV_READY)
 		return env_get(str);
 	if (env_get_f(str, buf, MTDPARTS_LEN) != -1)
 		return buf;

 	return NULL;
 }

 /**
  * update the variables "mtdids" and "mtdparts" with content of mtdparts_<dev>
  */
 static void board_get_mtdparts(const char *dev,
 			       char *mtdids,
 			       char *mtdparts)
 {
 	char env_name[32] = "mtdparts_";
 	char tmp_mtdparts[MTDPARTS_LEN];
 	const char *tmp;

 	/* name of env variable to read = mtdparts_<dev> */
 	strcat(env_name, dev);
 	tmp = env_get_mtdparts(env_name, tmp_mtdparts);
 	if (tmp) {
 		/* mtdids: "<dev>=<dev>, ...." */
 		if (mtdids[0] != '\0')
 			strcat(mtdids, ",");
 		strcat(mtdids, dev);
 		strcat(mtdids, "=");
 		strcat(mtdids, dev);

 		/* mtdparts: "mtdparts=<dev>:<mtdparts_<dev>>;..." */
 		if (mtdparts[0] != '\0')
 			strncat(mtdparts, ";", MTDPARTS_LEN);
 		else
 			strcat(mtdparts, "mtdparts=");
 		strncat(mtdparts, dev, MTDPARTS_LEN);
 		strncat(mtdparts, ":", MTDPARTS_LEN);
 		strncat(mtdparts, tmp, MTDPARTS_LEN);
 	}
 }

 void board_mtdparts_default(const char **mtdids, const char **mtdparts)
 {
 	struct udevice *dev;
 	static char parts[2 * MTDPARTS_LEN + 1];
 	static char ids[MTDIDS_LEN + 1];
 	static bool mtd_initialized;

 	if (mtd_initialized) {
 		*mtdids = ids;
 		*mtdparts = parts;
 		return;
 	}

 	memset(parts, 0, sizeof(parts));
 	memset(ids, 0, sizeof(ids));

 	if (!uclass_get_device(UCLASS_MTD, 0, &dev))
 		board_get_mtdparts("nand0", ids, parts);

 	if (!uclass_get_device(UCLASS_SPI_FLASH, 0, &dev))
 		board_get_mtdparts("nor0", ids, parts);

 	mtd_initialized = true;
 	*mtdids = ids;
 	*mtdparts = parts;
 	debug("%s:mtdids=%s & mtdparts=%s\n", __func__, ids, parts);
 }
 #endif

 #if defined(CONFIG_OF_BOARD_SETUP)
 int ft_board_setup(void *blob, bd_t *bd)
 {
 #ifdef CONFIG_FDT_FIXUP_PARTITIONS
 	struct node_info nodes[] = {
 		{ "st,stm32f469-qspi",		MTD_DEV_TYPE_NOR,  },
 		{ "st,stm32mp15-fmc2",		MTD_DEV_TYPE_NAND, },
 	};
 	fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
 #endif

 	return 0;
 }
 #endif
	// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
	/*
	* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
	*/
	#include <common.h>
	#include <adc.h>
	#include <bootm.h>
	#include <config.h>
	#include <clk.h>
	#include <dm.h>
	#include <env.h>
	#include <environment.h>
	#include <g_dnl.h>
	#include <generic-phy.h>
	#include <i2c.h>
	#include <led.h>
	#include <misc.h>
	#include <mtd.h>
	#include <mtd_node.h>
	#include <phy.h>
	#include <reset.h>
	#include <syscon.h>
	#include <usb.h>
	#include <asm/io.h>
	#include <asm/gpio.h>
	#include <asm/arch/stm32.h>
	#include <asm/arch/sys_proto.h>
	#include <jffs2/load_kernel.h>
	#include <power/regulator.h>
	#include <usb/dwc2_udc.h>

	/* SYSCFG registers */
	#define SYSCFG_BOOTR 0x00
	#define SYSCFG_PMCSETR 0x04
	#define SYSCFG_IOCTRLSETR 0x18
	#define SYSCFG_ICNR 0x1C
	#define SYSCFG_CMPCR 0x20
	#define SYSCFG_CMPENSETR 0x24
	#define SYSCFG_PMCCLRR 0x44

	#define SYSCFG_BOOTR_BOOT_MASK GENMASK(2, 0)
	#define SYSCFG_BOOTR_BOOTPD_SHIFT 4

	#define SYSCFG_IOCTRLSETR_HSLVEN_TRACE BIT(0)
	#define SYSCFG_IOCTRLSETR_HSLVEN_QUADSPI BIT(1)
	#define SYSCFG_IOCTRLSETR_HSLVEN_ETH BIT(2)
	#define SYSCFG_IOCTRLSETR_HSLVEN_SDMMC BIT(3)
	#define SYSCFG_IOCTRLSETR_HSLVEN_SPI BIT(4)

	#define SYSCFG_CMPCR_SW_CTRL BIT(1)
	#define SYSCFG_CMPCR_READY BIT(8)

	#define SYSCFG_CMPENSETR_MPU_EN BIT(0)

	#define SYSCFG_PMCSETR_ETH_CLK_SEL BIT(16)
	#define SYSCFG_PMCSETR_ETH_REF_CLK_SEL BIT(17)

	#define SYSCFG_PMCSETR_ETH_SELMII BIT(20)

	#define SYSCFG_PMCSETR_ETH_SEL_MASK GENMASK(23, 21)
	#define SYSCFG_PMCSETR_ETH_SEL_GMII_MII 0
	#define SYSCFG_PMCSETR_ETH_SEL_RGMII BIT(21)
	#define SYSCFG_PMCSETR_ETH_SEL_RMII BIT(23)

	/*
	* Get a global data pointer
	*/
	DECLARE_GLOBAL_DATA_PTR;

	#define USB_LOW_THRESHOLD_UV 200000
	#define USB_WARNING_LOW_THRESHOLD_UV 660000
	#define USB_START_LOW_THRESHOLD_UV 1230000
	#define USB_START_HIGH_THRESHOLD_UV 2150000

	int checkboard(void)
	{
	int ret;
	char *mode;
	u32 otp;
	struct udevice *dev;
	const char *fdt_compat;
	int fdt_compat_len;

	if (IS_ENABLED(CONFIG_STM32MP1_OPTEE))
	mode = "trusted with OP-TEE";
	else if (IS_ENABLED(CONFIG_STM32MP1_TRUSTED))
	mode = "trusted";
	else
	mode = "basic";

	printf("Board: stm32mp1 in %s mode", mode);
	fdt_compat = fdt_getprop(gd->fdt_blob, 0, "compatible",
	&fdt_compat_len);
	if (fdt_compat && fdt_compat_len)
	printf(" (%s)", fdt_compat);
	puts("\n");

	ret = uclass_get_device_by_driver(UCLASS_MISC,
	DM_GET_DRIVER(stm32mp_bsec),
	&dev);

	if (!ret)
	ret = misc_read(dev, STM32_BSEC_SHADOW(BSEC_OTP_BOARD),
	&otp, sizeof(otp));
	if (!ret && otp) {
	printf("Board: MB%04x Var%d Rev.%c-%02d\n",
	otp >> 16,
	(otp >> 12) & 0xF,
	((otp >> 8) & 0xF) - 1 + 'A',
	otp & 0xF);
	}

	return 0;
	}

	static void board_key_check(void)
	{
	#if defined(CONFIG_FASTBOOT) \|\| defined(CONFIG_CMD_STM32PROG)
	ofnode node;
	struct gpio_desc gpio;
	enum forced_boot_mode boot_mode = BOOT_NORMAL;

	node = ofnode_path("/config");
	if (!ofnode_valid(node)) {
	debug("%s: no /config node?\n", __func__);
	return;
	}
	#ifdef CONFIG_FASTBOOT
	if (gpio_request_by_name_nodev(node, "st,fastboot-gpios", 0,
	&gpio, GPIOD_IS_IN)) {
	debug("%s: could not find a /config/st,fastboot-gpios\n",
	__func__);
	} else {
	if (dm_gpio_get_value(&gpio)) {
	puts("Fastboot key pressed, ");
	boot_mode = BOOT_FASTBOOT;
	}

	dm_gpio_free(NULL, &gpio);
	}
	#endif
	#ifdef CONFIG_CMD_STM32PROG
	if (gpio_request_by_name_nodev(node, "st,stm32prog-gpios", 0,
	&gpio, GPIOD_IS_IN)) {
	debug("%s: could not find a /config/st,stm32prog-gpios\n",
	__func__);
	} else {
	if (dm_gpio_get_value(&gpio)) {
	puts("STM32Programmer key pressed, ");
	boot_mode = BOOT_STM32PROG;
	}
	dm_gpio_free(NULL, &gpio);
	}
	#endif

	if (boot_mode != BOOT_NORMAL) {
	puts("entering download mode...\n");
	clrsetbits_le32(TAMP_BOOT_CONTEXT,
	TAMP_BOOT_FORCED_MASK,
	boot_mode);
	}
	#endif
	}

	#if defined(CONFIG_USB_GADGET) && defined(CONFIG_USB_GADGET_DWC2_OTG)

	/* STMicroelectronics STUSB1600 Type-C controller */
	#define STUSB1600_CC_CONNECTION_STATUS 0x0E

	/* STUSB1600_CC_CONNECTION_STATUS bitfields */
	#define STUSB1600_CC_ATTACH BIT(0)

	static int stusb1600_init(struct udevice **dev_stusb1600)
	{
	ofnode node;
	struct udevice dev, bus;
	int ret;
	u32 chip_addr;

	*dev_stusb1600 = NULL;

	/* if node stusb1600 is present, means DK1 or DK2 board */
	node = ofnode_by_compatible(ofnode_null(), "st,stusb1600");
	if (!ofnode_valid(node))
	return -ENODEV;

	ret = ofnode_read_u32(node, "reg", &chip_addr);
	if (ret)
	return -EINVAL;

	ret = uclass_get_device_by_ofnode(UCLASS_I2C, ofnode_get_parent(node),
	&bus);
	if (ret) {
	printf("bus for stusb1600 not found\n");
	return -ENODEV;
	}

	ret = dm_i2c_probe(bus, chip_addr, 0, &dev);
	if (!ret)
	*dev_stusb1600 = dev;

	return ret;
	}

	static int stusb1600_cable_connected(struct udevice *dev)
	{
	u8 status;

	if (dm_i2c_read(dev, STUSB1600_CC_CONNECTION_STATUS, &status, 1))
	return 0;

	return status & STUSB1600_CC_ATTACH;
	}

	#include <usb/dwc2_udc.h>
	int g_dnl_board_usb_cable_connected(void)
	{
	struct udevice *stusb1600;
	struct udevice *dwc2_udc_otg;
	int ret;

	if (!stusb1600_init(&stusb1600))
	return stusb1600_cable_connected(stusb1600);

	ret = uclass_get_device_by_driver(UCLASS_USB_GADGET_GENERIC,
	DM_GET_DRIVER(dwc2_udc_otg),
	&dwc2_udc_otg);
	if (!ret)
	debug("dwc2_udc_otg init failed\n");

	return dwc2_udc_B_session_valid(dwc2_udc_otg);
	}
	#endif /* CONFIG_USB_GADGET */

	static int get_led(struct udevice *dev, char led_string)
	{
	char *led_name;
	int ret;

	led_name = fdtdec_get_config_string(gd->fdt_blob, led_string);
	if (!led_name) {
	pr_debug("%s: could not find %s config string\n",
	__func__, led_string);
	return -ENOENT;
	}
	ret = led_get_by_label(led_name, dev);
	if (ret) {
	debug("%s: get=%d\n", __func__, ret);
	return ret;
	}

	return 0;
	}

	static int setup_led(enum led_state_t cmd)
	{
	struct udevice *dev;
	int ret;

	ret = get_led(&dev, "u-boot,boot-led");
	if (ret)
	return ret;

	ret = led_set_state(dev, cmd);
	return ret;
	}

	static int board_check_usb_power(void)
	{
	struct ofnode_phandle_args adc_args;
	struct udevice *adc;
	struct udevice *led;
	ofnode node;
	unsigned int raw;
	int max_uV = 0;
	int min_uV = USB_START_HIGH_THRESHOLD_UV;
	int ret, uV, adc_count;
	u32 nb_blink;
	u8 i;
	node = ofnode_path("/config");
	if (!ofnode_valid(node)) {
	debug("%s: no /config node?\n", __func__);
	return -ENOENT;
	}

	/*
	* Retrieve the ADC channels devices and get measurement
	* for each of them
	*/
	adc_count = ofnode_count_phandle_with_args(node, "st,adc_usb_pd",
	"#io-channel-cells");
	if (adc_count < 0) {
	if (adc_count == -ENOENT)
	return 0;

	pr_err("%s: can't find adc channel (%d)\n", __func__,
	adc_count);

	return adc_count;
	}

	for (i = 0; i < adc_count; i++) {
	if (ofnode_parse_phandle_with_args(node, "st,adc_usb_pd",
	"#io-channel-cells", 0, i,
	&adc_args)) {
	pr_debug("%s: can't find /config/st,adc_usb_pd\n",
	__func__);
	return 0;
	}

	ret = uclass_get_device_by_ofnode(UCLASS_ADC, adc_args.node,
	&adc);

	if (ret) {
	pr_err("%s: Can't get adc device(%d)\n", __func__,
	ret);
	return ret;
	}

	ret = adc_channel_single_shot(adc->name, adc_args.args[0],
	&raw);
	if (ret) {
	pr_err("%s: single shot failed for %s[%d]!\n",
	__func__, adc->name, adc_args.args[0]);
	return ret;
	}
	/* Convert to uV */
	if (!adc_raw_to_uV(adc, raw, &uV)) {
	if (uV > max_uV)
	max_uV = uV;
	if (uV < min_uV)
	min_uV = uV;
	pr_debug("%s: %s[%02d] = %u, %d uV\n", __func__,
	adc->name, adc_args.args[0], raw, uV);
	} else {
	pr_err("%s: Can't get uV value for %s[%d]\n",
	__func__, adc->name, adc_args.args[0]);
	}
	}

	/*
	* If highest value is inside 1.23 Volts and 2.10 Volts, that means
	* board is plugged on an USB-C 3A power supply and boot process can
	* continue.
	*/
	if (max_uV > USB_START_LOW_THRESHOLD_UV &&
	max_uV <= USB_START_HIGH_THRESHOLD_UV &&
	min_uV <= USB_LOW_THRESHOLD_UV)
	return 0;

	pr_err("****************************************************\n");

	/*
	* If highest and lowest value are either both below
	* USB_LOW_THRESHOLD_UV or both above USB_LOW_THRESHOLD_UV, that
	* means USB TYPE-C is in unattached mode, this is an issue, make
	* u-boot,error-led blinking and stop boot process.
	*/
	if ((max_uV > USB_LOW_THRESHOLD_UV &&
	min_uV > USB_LOW_THRESHOLD_UV) \|\|
	(max_uV <= USB_LOW_THRESHOLD_UV &&
	min_uV <= USB_LOW_THRESHOLD_UV)) {
	pr_err("* ERROR USB TYPE-C connection in unattached mode *\n");
	pr_err("* Check that USB TYPE-C cable is correctly plugged *\n");
	/* with 125ms interval, led will blink for 17.02 years ....*/
	nb_blink = U32_MAX;
	}

	if (max_uV > USB_LOW_THRESHOLD_UV &&
	max_uV <= USB_WARNING_LOW_THRESHOLD_UV &&
	min_uV <= USB_LOW_THRESHOLD_UV) {
	pr_err("* WARNING 500mA power supply detected *\n");
	nb_blink = 2;
	}

	if (max_uV > USB_WARNING_LOW_THRESHOLD_UV &&
	max_uV <= USB_START_LOW_THRESHOLD_UV &&
	min_uV <= USB_LOW_THRESHOLD_UV) {
	pr_err("* WARNING 1.5mA power supply detected *\n");
	nb_blink = 3;
	}

	/*
	* If highest value is above 2.15 Volts that means that the USB TypeC
	* supplies more than 3 Amp, this is not compliant with TypeC specification
	*/
	if (max_uV > USB_START_HIGH_THRESHOLD_UV) {
	pr_err("* USB TYPE-C charger not compliant with *\n");
	pr_err("* specification *\n");
	pr_err("****************************************************\n\n");
	/* with 125ms interval, led will blink for 17.02 years ....*/
	nb_blink = U32_MAX;
	} else {
	pr_err("* Current too low, use a 3A power supply! *\n");
	pr_err("****************************************************\n\n");
	}

	ret = get_led(&led, "u-boot,error-led");
	if (ret) {
	/* in unattached case, the boot process must be stopped */
	if (nb_blink == U32_MAX)
	hang();
	return ret;
	}

	/* make u-boot,error-led blinking */
	for (i = 0; i < nb_blink * 2; i++) {
	led_set_state(led, LEDST_TOGGLE);
	mdelay(125);
	}
	led_set_state(led, LEDST_ON);

	return 0;
	}

	static void sysconf_init(void)
	{
	#ifndef CONFIG_STM32MP1_TRUSTED
	u8 *syscfg;
	#ifdef CONFIG_DM_REGULATOR
	struct udevice *pwr_dev;
	struct udevice *pwr_reg;
	struct udevice *dev;
	int ret;
	u32 otp = 0;
	#endif
	u32 bootr;

	syscfg = (u8 *)syscon_get_first_range(STM32MP_SYSCON_SYSCFG);

	/* interconnect update : select master using the port 1 */
	/* LTDC = AXI_M9 */
	/* GPU = AXI_M8 */
	/* today information is hardcoded in U-Boot */
	writel(BIT(9), syscfg + SYSCFG_ICNR);

	/* disable Pull-Down for boot pin connected to VDD */
	bootr = readl(syscfg + SYSCFG_BOOTR);
	bootr &= ~(SYSCFG_BOOTR_BOOT_MASK << SYSCFG_BOOTR_BOOTPD_SHIFT);
	bootr \|= (bootr & SYSCFG_BOOTR_BOOT_MASK) << SYSCFG_BOOTR_BOOTPD_SHIFT;
	writel(bootr, syscfg + SYSCFG_BOOTR);

	#ifdef CONFIG_DM_REGULATOR
	/* High Speed Low Voltage Pad mode Enable for SPI, SDMMC, ETH, QSPI
	* and TRACE. Needed above ~50MHz and conditioned by AFMUX selection.
	* The customer will have to disable this for low frequencies
	* or if AFMUX is selected but the function not used, typically for
	* TRACE. Otherwise, impact on power consumption.
	*
	* WARNING:
	* enabling High Speed mode while VDD>2.7V
	* with the OTP product_below_2v5 (OTP 18, BIT 13)
	* erroneously set to 1 can damage the IC!
	* => U-Boot set the register only if VDD < 2.7V (in DT)
	* but this value need to be consistent with board design
	*/
	ret = syscon_get_by_driver_data(STM32MP_SYSCON_PWR, &pwr_dev);
	if (!ret) {
	ret = uclass_get_device_by_driver(UCLASS_MISC,
	DM_GET_DRIVER(stm32mp_bsec),
	&dev);
	if (ret) {
	pr_err("Can't find stm32mp_bsec driver\n");
	return;
	}

	ret = misc_read(dev, STM32_BSEC_SHADOW(18), &otp, 4);
	if (!ret)
	otp = otp & BIT(13);

	/* get VDD = pwr-supply */
	ret = device_get_supply_regulator(pwr_dev, "pwr-supply",
	&pwr_reg);

	/* check if VDD is Low Voltage */
	if (!ret) {
	if (regulator_get_value(pwr_reg) < 2700000) {
	writel(SYSCFG_IOCTRLSETR_HSLVEN_TRACE \|
	SYSCFG_IOCTRLSETR_HSLVEN_QUADSPI \|
	SYSCFG_IOCTRLSETR_HSLVEN_ETH \|
	SYSCFG_IOCTRLSETR_HSLVEN_SDMMC \|
	SYSCFG_IOCTRLSETR_HSLVEN_SPI,
	syscfg + SYSCFG_IOCTRLSETR);

	if (!otp)
	pr_err("product_below_2v5=0: HSLVEN protected by HW\n");
	} else {
	if (otp)
	pr_err("product_below_2v5=1: HSLVEN update is destructive, no update as VDD>2.7V\n");
	}
	} else {
	debug("VDD unknown");
	}
	}
	#endif

	/* activate automatic I/O compensation
	* warning: need to ensure CSI enabled and ready in clock driver
	*/
	writel(SYSCFG_CMPENSETR_MPU_EN, syscfg + SYSCFG_CMPENSETR);

	while (!(readl(syscfg + SYSCFG_CMPCR) & SYSCFG_CMPCR_READY))
	;
	clrbits_le32(syscfg + SYSCFG_CMPCR, SYSCFG_CMPCR_SW_CTRL);
	#endif
	}

	/* board dependent setup after realloc */
	int board_init(void)
	{
	struct udevice *dev;

	/* address of boot parameters */
	gd->bd->bi_boot_params = STM32_DDR_BASE + 0x100;

	/* probe all PINCTRL for hog */
	for (uclass_first_device(UCLASS_PINCTRL, &dev);
	dev;
	uclass_next_device(&dev)) {
	pr_debug("probe pincontrol = %s\n", dev->name);
	}

	board_key_check();

	#ifdef CONFIG_DM_REGULATOR
	regulators_enable_boot_on(_DEBUG);
	#endif

	sysconf_init();

	if (IS_ENABLED(CONFIG_LED))
	led_default_state();

	return 0;
	}

	int board_late_init(void)
	{
	#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	const void *fdt_compat;
	int fdt_compat_len;

	fdt_compat = fdt_getprop(gd->fdt_blob, 0, "compatible",
	&fdt_compat_len);
	if (fdt_compat && fdt_compat_len) {
	if (strncmp(fdt_compat, "st,", 3) != 0)
	env_set("board_name", fdt_compat);
	else
	env_set("board_name", fdt_compat + 3);
	}
	#endif

	/* for DK1/DK2 boards */
	board_check_usb_power();

	return 0;
	}

	void board_quiesce_devices(void)
	{
	setup_led(LEDST_OFF);
	}

	/* board interface eth init */
	/* this is a weak define that we are overriding */
	int board_interface_eth_init(phy_interface_t interface_type,
	bool eth_clk_sel_reg, bool eth_ref_clk_sel_reg)
	{
	u8 *syscfg;
	u32 value;

	syscfg = (u8 *)syscon_get_first_range(STM32MP_SYSCON_SYSCFG);

	if (!syscfg)
	return -ENODEV;

	switch (interface_type) {
	case PHY_INTERFACE_MODE_MII:
	value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII \|
	SYSCFG_PMCSETR_ETH_REF_CLK_SEL;
	debug("%s: PHY_INTERFACE_MODE_MII\n", __func__);
	break;
	case PHY_INTERFACE_MODE_GMII:
	if (eth_clk_sel_reg)
	value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII \|
	SYSCFG_PMCSETR_ETH_CLK_SEL;
	else
	value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII;
	debug("%s: PHY_INTERFACE_MODE_GMII\n", __func__);
	break;
	case PHY_INTERFACE_MODE_RMII:
	if (eth_ref_clk_sel_reg)
	value = SYSCFG_PMCSETR_ETH_SEL_RMII \|
	SYSCFG_PMCSETR_ETH_REF_CLK_SEL;
	else
	value = SYSCFG_PMCSETR_ETH_SEL_RMII;
	debug("%s: PHY_INTERFACE_MODE_RMII\n", __func__);
	break;
	case PHY_INTERFACE_MODE_RGMII:
	case PHY_INTERFACE_MODE_RGMII_ID:
	case PHY_INTERFACE_MODE_RGMII_RXID:
	case PHY_INTERFACE_MODE_RGMII_TXID:
	if (eth_clk_sel_reg)
	value = SYSCFG_PMCSETR_ETH_SEL_RGMII \|
	SYSCFG_PMCSETR_ETH_CLK_SEL;
	else
	value = SYSCFG_PMCSETR_ETH_SEL_RGMII;
	debug("%s: PHY_INTERFACE_MODE_RGMII\n", __func__);
	break;
	default:
	debug("%s: Do not manage %d interface\n",
	__func__, interface_type);
	/* Do not manage others interfaces */
	return -EINVAL;
	}

	/* clear and set ETH configuration bits */
	writel(SYSCFG_PMCSETR_ETH_SEL_MASK \| SYSCFG_PMCSETR_ETH_SELMII \|
	SYSCFG_PMCSETR_ETH_REF_CLK_SEL \| SYSCFG_PMCSETR_ETH_CLK_SEL,
	syscfg + SYSCFG_PMCCLRR);
	writel(value, syscfg + SYSCFG_PMCSETR);

	return 0;
	}

	enum env_location env_get_location(enum env_operation op, int prio)
	{
	u32 bootmode = get_bootmode();

	if (prio)
	return ENVL_UNKNOWN;

	switch (bootmode & TAMP_BOOT_DEVICE_MASK) {
	#ifdef CONFIG_ENV_IS_IN_EXT4
	case BOOT_FLASH_SD:
	case BOOT_FLASH_EMMC:
	return ENVL_EXT4;
	#endif
	#ifdef CONFIG_ENV_IS_IN_UBI
	case BOOT_FLASH_NAND:
	return ENVL_UBI;
	#endif
	#ifdef CONFIG_ENV_IS_IN_SPI_FLASH
	case BOOT_FLASH_NOR:
	return ENVL_SPI_FLASH;
	#endif
	default:
	return ENVL_NOWHERE;
	}
	}

	#if defined(CONFIG_ENV_IS_IN_EXT4)
	const char *env_ext4_get_intf(void)
	{
	u32 bootmode = get_bootmode();

	switch (bootmode & TAMP_BOOT_DEVICE_MASK) {
	case BOOT_FLASH_SD:
	case BOOT_FLASH_EMMC:
	return "mmc";
	default:
	return "";
	}
	}

	const char *env_ext4_get_dev_part(void)
	{
	static char *const dev_part[] = {"0:auto", "1:auto", "2:auto"};
	u32 bootmode = get_bootmode();

	return dev_part[(bootmode & TAMP_BOOT_INSTANCE_MASK) - 1];
	}
	#endif

	#ifdef CONFIG_SYS_MTDPARTS_RUNTIME

	#define MTDPARTS_LEN 256
	#define MTDIDS_LEN 128

	/**
	* The mtdparts_nand0 and mtdparts_nor0 variable tends to be long.
	* If we need to access it before the env is relocated, then we need
	* to use our own stack buffer. gd->env_buf will be too small.
	*
	* @param buf temporary buffer pointer MTDPARTS_LEN long
	* @return mtdparts variable string, NULL if not found
	*/
	static const char env_get_mtdparts(const char str, char *buf)
	{
	if (gd->flags & GD_FLG_ENV_READY)
	return env_get(str);
	if (env_get_f(str, buf, MTDPARTS_LEN) != -1)
	return buf;

	return NULL;
	}

	/**
	* update the variables "mtdids" and "mtdparts" with content of mtdparts_<dev>
	*/
	static void board_get_mtdparts(const char *dev,
	char *mtdids,
	char *mtdparts)
	{
	char env_name[32] = "mtdparts_";
	char tmp_mtdparts[MTDPARTS_LEN];
	const char *tmp;

	/* name of env variable to read = mtdparts_<dev> */
	strcat(env_name, dev);
	tmp = env_get_mtdparts(env_name, tmp_mtdparts);
	if (tmp) {
	/* mtdids: "<dev>=<dev>, ...." */
	if (mtdids[0] != '\0')
	strcat(mtdids, ",");
	strcat(mtdids, dev);
	strcat(mtdids, "=");
	strcat(mtdids, dev);

	/* mtdparts: "mtdparts=<dev>:<mtdparts_<dev>>;..." */
	if (mtdparts[0] != '\0')
	strncat(mtdparts, ";", MTDPARTS_LEN);
	else
	strcat(mtdparts, "mtdparts=");
	strncat(mtdparts, dev, MTDPARTS_LEN);
	strncat(mtdparts, ":", MTDPARTS_LEN);
	strncat(mtdparts, tmp, MTDPARTS_LEN);
	}
	}

	void board_mtdparts_default(const char mtdids, const char mtdparts)
	{
	struct udevice *dev;
	static char parts[2 * MTDPARTS_LEN + 1];
	static char ids[MTDIDS_LEN + 1];
	static bool mtd_initialized;

	if (mtd_initialized) {
	*mtdids = ids;
	*mtdparts = parts;
	return;
	}

	memset(parts, 0, sizeof(parts));
	memset(ids, 0, sizeof(ids));

	if (!uclass_get_device(UCLASS_MTD, 0, &dev))
	board_get_mtdparts("nand0", ids, parts);

	if (!uclass_get_device(UCLASS_SPI_FLASH, 0, &dev))
	board_get_mtdparts("nor0", ids, parts);

	mtd_initialized = true;
	*mtdids = ids;
	*mtdparts = parts;
	debug("%s:mtdids=%s & mtdparts=%s\n", __func__, ids, parts);
	}
	#endif

	#if defined(CONFIG_OF_BOARD_SETUP)
	int ft_board_setup(void blob, bd_t bd)
	{
	#ifdef CONFIG_FDT_FIXUP_PARTITIONS
	struct node_info nodes[] = {
	{ "st,stm32f469-qspi", MTD_DEV_TYPE_NOR, },
	{ "st,stm32mp15-fmc2", MTD_DEV_TYPE_NAND, },
	};
	fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
	#endif

	return 0;
	}
	#endif