board/xilinx/zynqmp/zynqmp.c - manifest_repos/u-boot - Git at Google

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2014 - 2015 Xilinx, Inc.
  * Michal Simek <michal.simek@xilinx.com>
  */

 #include <common.h>
 #include <sata.h>
 #include <ahci.h>
 #include <scsi.h>
 #include <malloc.h>
 #include <wdt.h>
 #include <asm/arch/clk.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/psu_init_gpl.h>
 #include <asm/io.h>
 #include <dm/device.h>
 #include <dm/uclass.h>
 #include <usb.h>
 #include <dwc3-uboot.h>
 #include <zynqmppl.h>
 #include <i2c.h>
 #include <g_dnl.h>

 DECLARE_GLOBAL_DATA_PTR;

 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_WDT)
 static struct udevice *watchdog_dev;
 #endif

 #if defined(CONFIG_FPGA) && defined(CONFIG_FPGA_ZYNQMPPL) && \
     !defined(CONFIG_SPL_BUILD)
 static xilinx_desc zynqmppl = XILINX_ZYNQMP_DESC;

 static const struct {
 	u32 id;
 	u32 ver;
 	char *name;
 	bool evexists;
 } zynqmp_devices[] = {
 	{
 		.id = 0x10,
 		.name = "3eg",
 	},
 	{
 		.id = 0x10,
 		.ver = 0x2c,
 		.name = "3cg",
 	},
 	{
 		.id = 0x11,
 		.name = "2eg",
 	},
 	{
 		.id = 0x11,
 		.ver = 0x2c,
 		.name = "2cg",
 	},
 	{
 		.id = 0x20,
 		.name = "5ev",
 		.evexists = 1,
 	},
 	{
 		.id = 0x20,
 		.ver = 0x100,
 		.name = "5eg",
 		.evexists = 1,
 	},
 	{
 		.id = 0x20,
 		.ver = 0x12c,
 		.name = "5cg",
 		.evexists = 1,
 	},
 	{
 		.id = 0x21,
 		.name = "4ev",
 		.evexists = 1,
 	},
 	{
 		.id = 0x21,
 		.ver = 0x100,
 		.name = "4eg",
 		.evexists = 1,
 	},
 	{
 		.id = 0x21,
 		.ver = 0x12c,
 		.name = "4cg",
 		.evexists = 1,
 	},
 	{
 		.id = 0x30,
 		.name = "7ev",
 		.evexists = 1,
 	},
 	{
 		.id = 0x30,
 		.ver = 0x100,
 		.name = "7eg",
 		.evexists = 1,
 	},
 	{
 		.id = 0x30,
 		.ver = 0x12c,
 		.name = "7cg",
 		.evexists = 1,
 	},
 	{
 		.id = 0x38,
 		.name = "9eg",
 	},
 	{
 		.id = 0x38,
 		.ver = 0x2c,
 		.name = "9cg",
 	},
 	{
 		.id = 0x39,
 		.name = "6eg",
 	},
 	{
 		.id = 0x39,
 		.ver = 0x2c,
 		.name = "6cg",
 	},
 	{
 		.id = 0x40,
 		.name = "11eg",
 	},
 	{ /* For testing purpose only */
 		.id = 0x50,
 		.ver = 0x2c,
 		.name = "15cg",
 	},
 	{
 		.id = 0x50,
 		.name = "15eg",
 	},
 	{
 		.id = 0x58,
 		.name = "19eg",
 	},
 	{
 		.id = 0x59,
 		.name = "17eg",
 	},
 	{
 		.id = 0x61,
 		.name = "21dr",
 	},
 	{
 		.id = 0x63,
 		.name = "23dr",
 	},
 	{
 		.id = 0x65,
 		.name = "25dr",
 	},
 	{
 		.id = 0x64,
 		.name = "27dr",
 	},
 	{
 		.id = 0x60,
 		.name = "28dr",
 	},
 	{
 		.id = 0x62,
 		.name = "29dr",
 	},
 };
 #endif

 int chip_id(unsigned char id)
 {
 	struct pt_regs regs;
 	int val = -EINVAL;

 	if (current_el() != 3) {
 		regs.regs[0] = ZYNQMP_SIP_SVC_CSU_DMA_CHIPID;
 		regs.regs[1] = 0;
 		regs.regs[2] = 0;
 		regs.regs[3] = 0;

 		smc_call(&regs);

 		/*
 		 * SMC returns:
 		 * regs[0][31:0]  = status of the operation
 		 * regs[0][63:32] = CSU.IDCODE register
 		 * regs[1][31:0]  = CSU.version register
 		 * regs[1][63:32] = CSU.IDCODE2 register
 		 */
 		switch (id) {
 		case IDCODE:
 			regs.regs[0] = upper_32_bits(regs.regs[0]);
 			regs.regs[0] &= ZYNQMP_CSU_IDCODE_DEVICE_CODE_MASK |
 					ZYNQMP_CSU_IDCODE_SVD_MASK;
 			regs.regs[0] >>= ZYNQMP_CSU_IDCODE_SVD_SHIFT;
 			val = regs.regs[0];
 			break;
 		case VERSION:
 			regs.regs[1] = lower_32_bits(regs.regs[1]);
 			regs.regs[1] &= ZYNQMP_CSU_SILICON_VER_MASK;
 			val = regs.regs[1];
 			break;
 		case IDCODE2:
 			regs.regs[1] = lower_32_bits(regs.regs[1]);
 			regs.regs[1] >>= ZYNQMP_CSU_VERSION_EMPTY_SHIFT;
 			val = regs.regs[1];
 			break;
 		default:
 			printf("%s, Invalid Req:0x%x\n", __func__, id);
 		}
 	} else {
 		switch (id) {
 		case IDCODE:
 			val = readl(ZYNQMP_CSU_IDCODE_ADDR);
 			val &= ZYNQMP_CSU_IDCODE_DEVICE_CODE_MASK |
 			       ZYNQMP_CSU_IDCODE_SVD_MASK;
 			val >>= ZYNQMP_CSU_IDCODE_SVD_SHIFT;
 			break;
 		case VERSION:
 			val = readl(ZYNQMP_CSU_VER_ADDR);
 			val &= ZYNQMP_CSU_SILICON_VER_MASK;
 			break;
 		default:
 			printf("%s, Invalid Req:0x%x\n", __func__, id);
 		}
 	}

 	return val;
 }

 #define ZYNQMP_VERSION_SIZE		9
 #define ZYNQMP_PL_STATUS_BIT		9
 #define ZYNQMP_IPDIS_VCU_BIT		8
 #define ZYNQMP_PL_STATUS_MASK		BIT(ZYNQMP_PL_STATUS_BIT)
 #define ZYNQMP_CSU_VERSION_MASK		~(ZYNQMP_PL_STATUS_MASK)
 #define ZYNQMP_CSU_VCUDIS_VER_MASK	ZYNQMP_CSU_VERSION_MASK & \
 					~BIT(ZYNQMP_IPDIS_VCU_BIT)
 #define MAX_VARIANTS_EV			3

 #if defined(CONFIG_FPGA) && defined(CONFIG_FPGA_ZYNQMPPL) && \
 	!defined(CONFIG_SPL_BUILD)
 static char *zynqmp_get_silicon_idcode_name(void)
 {
 	u32 i, id, ver, j;
 	char *buf;
 	static char name[ZYNQMP_VERSION_SIZE];

 	id = chip_id(IDCODE);
 	ver = chip_id(IDCODE2);

 	for (i = 0; i < ARRAY_SIZE(zynqmp_devices); i++) {
 		if (zynqmp_devices[i].id == id) {
 			if (zynqmp_devices[i].evexists &&
 			    !(ver & ZYNQMP_PL_STATUS_MASK))
 				break;
 			if (zynqmp_devices[i].ver == (ver &
 			    ZYNQMP_CSU_VERSION_MASK))
 				break;
 		}
 	}

 	if (i >= ARRAY_SIZE(zynqmp_devices))
 		return "unknown";

 	strncat(name, "zu", 2);
 	if (!zynqmp_devices[i].evexists ||
 	    (ver & ZYNQMP_PL_STATUS_MASK)) {
 		strncat(name, zynqmp_devices[i].name,
 			ZYNQMP_VERSION_SIZE - 3);
 		return name;
 	}

 	/*
 	 * Here we are means, PL not powered up and ev variant
 	 * exists. So, we need to ignore VCU disable bit(8) in
 	 * version and findout if its CG or EG/EV variant.
 	 */
 	for (j = 0; j < MAX_VARIANTS_EV; j++, i++) {
 		if ((zynqmp_devices[i].ver & ~BIT(ZYNQMP_IPDIS_VCU_BIT)) ==
 		    (ver & ZYNQMP_CSU_VCUDIS_VER_MASK)) {
 			strncat(name, zynqmp_devices[i].name,
 				ZYNQMP_VERSION_SIZE - 3);
 			break;
 		}
 	}

 	if (j >= MAX_VARIANTS_EV)
 		return "unknown";

 	if (strstr(name, "eg") || strstr(name, "ev")) {
 		buf = strstr(name, "e");
 		*buf = '\0';
 	}

 	return name;
 }
 #endif

 int board_early_init_f(void)
 {
 	int ret = 0;
 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_CLK_ZYNQMP)
 	u32 pm_api_version;

 	pm_api_version = zynqmp_pmufw_version();
 	printf("PMUFW:\tv%d.%d\n",
 	       pm_api_version >> ZYNQMP_PM_VERSION_MAJOR_SHIFT,
 	       pm_api_version & ZYNQMP_PM_VERSION_MINOR_MASK);

 	if (pm_api_version < ZYNQMP_PM_VERSION)
 		panic("PMUFW version error. Expected: v%d.%d\n",
 		      ZYNQMP_PM_VERSION_MAJOR, ZYNQMP_PM_VERSION_MINOR);
 #endif

 #if defined(CONFIG_ZYNQMP_PSU_INIT_ENABLED)
 	ret = psu_init();
 #endif

 #if defined(CONFIG_WDT) && !defined(CONFIG_SPL_BUILD)
 	/* bss is not cleared at time when watchdog_reset() is called */
 	watchdog_dev = NULL;
 #endif

 	return ret;
 }

 int board_init(void)
 {
 	printf("EL Level:\tEL%d\n", current_el());

 #if defined(CONFIG_FPGA) && defined(CONFIG_FPGA_ZYNQMPPL) && \
     !defined(CONFIG_SPL_BUILD) || (defined(CONFIG_SPL_FPGA_SUPPORT) && \
     defined(CONFIG_SPL_BUILD))
 	if (current_el() != 3) {
 		zynqmppl.name = zynqmp_get_silicon_idcode_name();
 		printf("Chip ID:\t%s\n", zynqmppl.name);
 		fpga_init();
 		fpga_add(fpga_xilinx, &zynqmppl);
 	}
 #endif

 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_WDT)
 	if (uclass_get_device_by_seq(UCLASS_WDT, 0, &watchdog_dev)) {
 		debug("Watchdog: Not found by seq!\n");
 		if (uclass_get_device(UCLASS_WDT, 0, &watchdog_dev)) {
 			puts("Watchdog: Not found!\n");
 			return 0;
 		}
 	}

 	wdt_start(watchdog_dev, 0, 0);
 	puts("Watchdog: Started\n");
 #endif

 	return 0;
 }

 #ifdef CONFIG_WATCHDOG
 /* Called by macro WATCHDOG_RESET */
 void watchdog_reset(void)
 {
 # if !defined(CONFIG_SPL_BUILD)
 	static ulong next_reset;
 	ulong now;

 	if (!watchdog_dev)
 		return;

 	now = timer_get_us();

 	/* Do not reset the watchdog too often */
 	if (now > next_reset) {
 		wdt_reset(watchdog_dev);
 		next_reset = now + 1000;
 	}
 # endif
 }
 #endif

 int board_early_init_r(void)
 {
 	u32 val;

 	if (current_el() != 3)
 		return 0;

 	val = readl(&crlapb_base->timestamp_ref_ctrl);
 	val &= ZYNQMP_CRL_APB_TIMESTAMP_REF_CTRL_CLKACT;

 	if (!val) {
 		val = readl(&crlapb_base->timestamp_ref_ctrl);
 		val |= ZYNQMP_CRL_APB_TIMESTAMP_REF_CTRL_CLKACT;
 		writel(val, &crlapb_base->timestamp_ref_ctrl);

 		/* Program freq register in System counter */
 		writel(zynqmp_get_system_timer_freq(),
 		       &iou_scntr_secure->base_frequency_id_register);
 		/* And enable system counter */
 		writel(ZYNQMP_IOU_SCNTR_COUNTER_CONTROL_REGISTER_EN,
 		       &iou_scntr_secure->counter_control_register);
 	}
 	return 0;
 }

 int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
 {
 #if defined(CONFIG_ZYNQ_GEM_EEPROM_ADDR) && \
     defined(CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET) && \
     defined(CONFIG_ZYNQ_EEPROM_BUS)
 	i2c_set_bus_num(CONFIG_ZYNQ_EEPROM_BUS);

 	if (eeprom_read(CONFIG_ZYNQ_GEM_EEPROM_ADDR,
 			CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET,
 			ethaddr, 6))
 		printf("I2C EEPROM MAC address read failed\n");
 #endif

 	return 0;
 }

 unsigned long do_go_exec(ulong (*entry)(int, char * const []), int argc,
 			 char * const argv[])
 {
 	int ret = 0;

 	if (current_el() > 1) {
 		smp_kick_all_cpus();
 		dcache_disable();
 		armv8_switch_to_el1(0x0, 0, 0, 0, (unsigned long)entry,
 				    ES_TO_AARCH64);
 	} else {
 		printf("FAIL: current EL is not above EL1\n");
 		ret = EINVAL;
 	}
 	return ret;
 }

 #if !defined(CONFIG_SYS_SDRAM_BASE) && !defined(CONFIG_SYS_SDRAM_SIZE)
 int dram_init_banksize(void)
 {
 	int ret;

 	ret = fdtdec_setup_memory_banksize();
 	if (ret)
 		return ret;

 	mem_map_fill();

 	return 0;
 }

 int dram_init(void)
 {
 	if (fdtdec_setup_mem_size_base() != 0)
 		return -EINVAL;

 	return 0;
 }
 #else
 int dram_init_banksize(void)
 {
 #if defined(CONFIG_NR_DRAM_BANKS)
 	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 	gd->bd->bi_dram[0].size = get_effective_memsize();
 #endif

 	mem_map_fill();

 	return 0;
 }

 int dram_init(void)
 {
 	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
 				    CONFIG_SYS_SDRAM_SIZE);

 	return 0;
 }
 #endif

 void reset_cpu(ulong addr)
 {
 }

 static const struct {
 	u32 bit;
 	const char *name;
 } reset_reasons[] = {
 	{ RESET_REASON_DEBUG_SYS, "DEBUG" },
 	{ RESET_REASON_SOFT, "SOFT" },
 	{ RESET_REASON_SRST, "SRST" },
 	{ RESET_REASON_PSONLY, "PS-ONLY" },
 	{ RESET_REASON_PMU, "PMU" },
 	{ RESET_REASON_INTERNAL, "INTERNAL" },
 	{ RESET_REASON_EXTERNAL, "EXTERNAL" },
 	{}
 };

 static u32 reset_reason(void)
 {
 	u32 ret;
 	int i;
 	const char *reason = NULL;

 	ret = readl(&crlapb_base->reset_reason);

 	puts("Reset reason:\t");

 	for (i = 0; i < ARRAY_SIZE(reset_reasons); i++) {
 		if (ret & reset_reasons[i].bit) {
 			reason = reset_reasons[i].name;
 			printf("%s ", reset_reasons[i].name);
 			break;
 		}
 	}

 	puts("\n");

 	env_set("reset_reason", reason);

 	writel(~0, &crlapb_base->reset_reason);

 	return ret;
 }

 int board_late_init(void)
 {
 	u32 reg = 0;
 	u8 bootmode;
 	struct udevice *dev;
 	int bootseq = -1;
 	int bootseq_len = 0;
 	int env_targets_len = 0;
 	const char *mode;
 	char *new_targets;
 	char *env_targets;
 	int ret;

 #if defined(CONFIG_USB_ETHER) && !defined(CONFIG_USB_GADGET_DOWNLOAD)
 	usb_ether_init();
 #endif

 	if (!(gd->flags & GD_FLG_ENV_DEFAULT)) {
 		debug("Saved variables - Skipping\n");
 		return 0;
 	}

 	ret = zynqmp_mmio_read((ulong)&crlapb_base->boot_mode, &reg);
 	if (ret)
 		return -EINVAL;

 	if (reg >> BOOT_MODE_ALT_SHIFT)
 		reg >>= BOOT_MODE_ALT_SHIFT;

 	bootmode = reg & BOOT_MODES_MASK;

 	puts("Bootmode: ");
 	switch (bootmode) {
 	case USB_MODE:
 		puts("USB_MODE\n");
 		mode = "usb";
 		env_set("modeboot", "usb_dfu_spl");
 		break;
 	case JTAG_MODE:
 		puts("JTAG_MODE\n");
 		mode = "pxe dhcp";
 		env_set("modeboot", "jtagboot");
 		break;
 	case QSPI_MODE_24BIT:
 	case QSPI_MODE_32BIT:
 		mode = "qspi0";
 		puts("QSPI_MODE\n");
 		env_set("modeboot", "qspiboot");
 		break;
 	case EMMC_MODE:
 		puts("EMMC_MODE\n");
 		mode = "mmc0";
 		env_set("modeboot", "emmcboot");
 		break;
 	case SD_MODE:
 		puts("SD_MODE\n");
 		if (uclass_get_device_by_name(UCLASS_MMC,
 					      "sdhci@ff160000", &dev)) {
 			puts("Boot from SD0 but without SD0 enabled!\n");
 			return -1;
 		}
 		debug("mmc0 device found at %p, seq %d\n", dev, dev->seq);

 		mode = "mmc";
 		bootseq = dev->seq;
 		env_set("modeboot", "sdboot");
 		break;
 	case SD1_LSHFT_MODE:
 		puts("LVL_SHFT_");
 		/* fall through */
 	case SD_MODE1:
 		puts("SD_MODE1\n");
 		if (uclass_get_device_by_name(UCLASS_MMC,
 					      "sdhci@ff170000", &dev)) {
 			puts("Boot from SD1 but without SD1 enabled!\n");
 			return -1;
 		}
 		debug("mmc1 device found at %p, seq %d\n", dev, dev->seq);

 		mode = "mmc";
 		bootseq = dev->seq;
 		env_set("modeboot", "sdboot");
 		break;
 	case NAND_MODE:
 		puts("NAND_MODE\n");
 		mode = "nand0";
 		env_set("modeboot", "nandboot");
 		break;
 	default:
 		mode = "";
 		printf("Invalid Boot Mode:0x%x\n", bootmode);
 		break;
 	}

 	if (bootseq >= 0) {
 		bootseq_len = snprintf(NULL, 0, "%i", bootseq);
 		debug("Bootseq len: %x\n", bootseq_len);
 	}

 	/*
 	 * One terminating char + one byte for space between mode
 	 * and default boot_targets
 	 */
 	env_targets = env_get("boot_targets");
 	if (env_targets)
 		env_targets_len = strlen(env_targets);

 	new_targets = calloc(1, strlen(mode) + env_targets_len + 2 +
 			     bootseq_len);
 	if (!new_targets)
 		return -ENOMEM;

 	if (bootseq >= 0)
 		sprintf(new_targets, "%s%x %s", mode, bootseq,
 			env_targets ? env_targets : "");
 	else
 		sprintf(new_targets, "%s %s", mode,
 			env_targets ? env_targets : "");

 	env_set("boot_targets", new_targets);

 	reset_reason();

 	return 0;
 }

 int checkboard(void)
 {
 	puts("Board: Xilinx ZynqMP\n");
 	return 0;
 }
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* (C) Copyright 2014 - 2015 Xilinx, Inc.
	* Michal Simek <michal.simek@xilinx.com>
	*/

	#include <common.h>
	#include <sata.h>
	#include <ahci.h>
	#include <scsi.h>
	#include <malloc.h>
	#include <wdt.h>
	#include <asm/arch/clk.h>
	#include <asm/arch/hardware.h>
	#include <asm/arch/sys_proto.h>
	#include <asm/arch/psu_init_gpl.h>
	#include <asm/io.h>
	#include <dm/device.h>
	#include <dm/uclass.h>
	#include <usb.h>
	#include <dwc3-uboot.h>
	#include <zynqmppl.h>
	#include <i2c.h>
	#include <g_dnl.h>

	DECLARE_GLOBAL_DATA_PTR;

	#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_WDT)
	static struct udevice *watchdog_dev;
	#endif

	#if defined(CONFIG_FPGA) && defined(CONFIG_FPGA_ZYNQMPPL) && \
	!defined(CONFIG_SPL_BUILD)
	static xilinx_desc zynqmppl = XILINX_ZYNQMP_DESC;

	static const struct {
	u32 id;
	u32 ver;
	char *name;
	bool evexists;
	} zynqmp_devices[] = {
	{
	.id = 0x10,
	.name = "3eg",
	},
	{
	.id = 0x10,
	.ver = 0x2c,
	.name = "3cg",
	},
	{
	.id = 0x11,
	.name = "2eg",
	},
	{
	.id = 0x11,
	.ver = 0x2c,
	.name = "2cg",
	},
	{
	.id = 0x20,
	.name = "5ev",
	.evexists = 1,
	},
	{
	.id = 0x20,
	.ver = 0x100,
	.name = "5eg",
	.evexists = 1,
	},
	{
	.id = 0x20,
	.ver = 0x12c,
	.name = "5cg",
	.evexists = 1,
	},
	{
	.id = 0x21,
	.name = "4ev",
	.evexists = 1,
	},
	{
	.id = 0x21,
	.ver = 0x100,
	.name = "4eg",
	.evexists = 1,
	},
	{
	.id = 0x21,
	.ver = 0x12c,
	.name = "4cg",
	.evexists = 1,
	},
	{
	.id = 0x30,
	.name = "7ev",
	.evexists = 1,
	},
	{
	.id = 0x30,
	.ver = 0x100,
	.name = "7eg",
	.evexists = 1,
	},
	{
	.id = 0x30,
	.ver = 0x12c,
	.name = "7cg",
	.evexists = 1,
	},
	{
	.id = 0x38,
	.name = "9eg",
	},
	{
	.id = 0x38,
	.ver = 0x2c,
	.name = "9cg",
	},
	{
	.id = 0x39,
	.name = "6eg",
	},
	{
	.id = 0x39,
	.ver = 0x2c,
	.name = "6cg",
	},
	{
	.id = 0x40,
	.name = "11eg",
	},
	{ /* For testing purpose only */
	.id = 0x50,
	.ver = 0x2c,
	.name = "15cg",
	},
	{
	.id = 0x50,
	.name = "15eg",
	},
	{
	.id = 0x58,
	.name = "19eg",
	},
	{
	.id = 0x59,
	.name = "17eg",
	},
	{
	.id = 0x61,
	.name = "21dr",
	},
	{
	.id = 0x63,
	.name = "23dr",
	},
	{
	.id = 0x65,
	.name = "25dr",
	},
	{
	.id = 0x64,
	.name = "27dr",
	},
	{
	.id = 0x60,
	.name = "28dr",
	},
	{
	.id = 0x62,
	.name = "29dr",
	},
	};
	#endif

	int chip_id(unsigned char id)
	{
	struct pt_regs regs;
	int val = -EINVAL;

	if (current_el() != 3) {
	regs.regs[0] = ZYNQMP_SIP_SVC_CSU_DMA_CHIPID;
	regs.regs[1] = 0;
	regs.regs[2] = 0;
	regs.regs[3] = 0;

	smc_call(&regs);

	/*
	* SMC returns:
	* regs[0][31:0] = status of the operation
	* regs[0][63:32] = CSU.IDCODE register
	* regs[1][31:0] = CSU.version register
	* regs[1][63:32] = CSU.IDCODE2 register
	*/
	switch (id) {
	case IDCODE:
	regs.regs[0] = upper_32_bits(regs.regs[0]);
	regs.regs[0] &= ZYNQMP_CSU_IDCODE_DEVICE_CODE_MASK \|
	ZYNQMP_CSU_IDCODE_SVD_MASK;
	regs.regs[0] >>= ZYNQMP_CSU_IDCODE_SVD_SHIFT;
	val = regs.regs[0];
	break;
	case VERSION:
	regs.regs[1] = lower_32_bits(regs.regs[1]);
	regs.regs[1] &= ZYNQMP_CSU_SILICON_VER_MASK;
	val = regs.regs[1];
	break;
	case IDCODE2:
	regs.regs[1] = lower_32_bits(regs.regs[1]);
	regs.regs[1] >>= ZYNQMP_CSU_VERSION_EMPTY_SHIFT;
	val = regs.regs[1];
	break;
	default:
	printf("%s, Invalid Req:0x%x\n", __func__, id);
	}
	} else {
	switch (id) {
	case IDCODE:
	val = readl(ZYNQMP_CSU_IDCODE_ADDR);
	val &= ZYNQMP_CSU_IDCODE_DEVICE_CODE_MASK \|
	ZYNQMP_CSU_IDCODE_SVD_MASK;
	val >>= ZYNQMP_CSU_IDCODE_SVD_SHIFT;
	break;
	case VERSION:
	val = readl(ZYNQMP_CSU_VER_ADDR);
	val &= ZYNQMP_CSU_SILICON_VER_MASK;
	break;
	default:
	printf("%s, Invalid Req:0x%x\n", __func__, id);
	}
	}

	return val;
	}

	#define ZYNQMP_VERSION_SIZE 9
	#define ZYNQMP_PL_STATUS_BIT 9
	#define ZYNQMP_IPDIS_VCU_BIT 8
	#define ZYNQMP_PL_STATUS_MASK BIT(ZYNQMP_PL_STATUS_BIT)
	#define ZYNQMP_CSU_VERSION_MASK ~(ZYNQMP_PL_STATUS_MASK)
	#define ZYNQMP_CSU_VCUDIS_VER_MASK ZYNQMP_CSU_VERSION_MASK & \
	~BIT(ZYNQMP_IPDIS_VCU_BIT)
	#define MAX_VARIANTS_EV 3

	#if defined(CONFIG_FPGA) && defined(CONFIG_FPGA_ZYNQMPPL) && \
	!defined(CONFIG_SPL_BUILD)
	static char *zynqmp_get_silicon_idcode_name(void)
	{
	u32 i, id, ver, j;
	char *buf;
	static char name[ZYNQMP_VERSION_SIZE];

	id = chip_id(IDCODE);
	ver = chip_id(IDCODE2);

	for (i = 0; i < ARRAY_SIZE(zynqmp_devices); i++) {
	if (zynqmp_devices[i].id == id) {
	if (zynqmp_devices[i].evexists &&
	!(ver & ZYNQMP_PL_STATUS_MASK))
	break;
	if (zynqmp_devices[i].ver == (ver &
	ZYNQMP_CSU_VERSION_MASK))
	break;
	}
	}

	if (i >= ARRAY_SIZE(zynqmp_devices))
	return "unknown";

	strncat(name, "zu", 2);
	if (!zynqmp_devices[i].evexists \|\|
	(ver & ZYNQMP_PL_STATUS_MASK)) {
	strncat(name, zynqmp_devices[i].name,
	ZYNQMP_VERSION_SIZE - 3);
	return name;
	}

	/*
	* Here we are means, PL not powered up and ev variant
	* exists. So, we need to ignore VCU disable bit(8) in
	* version and findout if its CG or EG/EV variant.
	*/
	for (j = 0; j < MAX_VARIANTS_EV; j++, i++) {
	if ((zynqmp_devices[i].ver & ~BIT(ZYNQMP_IPDIS_VCU_BIT)) ==
	(ver & ZYNQMP_CSU_VCUDIS_VER_MASK)) {
	strncat(name, zynqmp_devices[i].name,
	ZYNQMP_VERSION_SIZE - 3);
	break;
	}
	}

	if (j >= MAX_VARIANTS_EV)
	return "unknown";

	if (strstr(name, "eg") \|\| strstr(name, "ev")) {
	buf = strstr(name, "e");
	*buf = '\0';
	}

	return name;
	}
	#endif

	int board_early_init_f(void)
	{
	int ret = 0;
	#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_CLK_ZYNQMP)
	u32 pm_api_version;

	pm_api_version = zynqmp_pmufw_version();
	printf("PMUFW:\tv%d.%d\n",
	pm_api_version >> ZYNQMP_PM_VERSION_MAJOR_SHIFT,
	pm_api_version & ZYNQMP_PM_VERSION_MINOR_MASK);

	if (pm_api_version < ZYNQMP_PM_VERSION)
	panic("PMUFW version error. Expected: v%d.%d\n",
	ZYNQMP_PM_VERSION_MAJOR, ZYNQMP_PM_VERSION_MINOR);
	#endif

	#if defined(CONFIG_ZYNQMP_PSU_INIT_ENABLED)
	ret = psu_init();
	#endif

	#if defined(CONFIG_WDT) && !defined(CONFIG_SPL_BUILD)
	/* bss is not cleared at time when watchdog_reset() is called */
	watchdog_dev = NULL;
	#endif

	return ret;
	}

	int board_init(void)
	{
	printf("EL Level:\tEL%d\n", current_el());

	#if defined(CONFIG_FPGA) && defined(CONFIG_FPGA_ZYNQMPPL) && \
	!defined(CONFIG_SPL_BUILD) \|\| (defined(CONFIG_SPL_FPGA_SUPPORT) && \
	defined(CONFIG_SPL_BUILD))
	if (current_el() != 3) {
	zynqmppl.name = zynqmp_get_silicon_idcode_name();
	printf("Chip ID:\t%s\n", zynqmppl.name);
	fpga_init();
	fpga_add(fpga_xilinx, &zynqmppl);
	}
	#endif

	#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_WDT)
	if (uclass_get_device_by_seq(UCLASS_WDT, 0, &watchdog_dev)) {
	debug("Watchdog: Not found by seq!\n");
	if (uclass_get_device(UCLASS_WDT, 0, &watchdog_dev)) {
	puts("Watchdog: Not found!\n");
	return 0;
	}
	}

	wdt_start(watchdog_dev, 0, 0);
	puts("Watchdog: Started\n");
	#endif

	return 0;
	}

	#ifdef CONFIG_WATCHDOG
	/* Called by macro WATCHDOG_RESET */
	void watchdog_reset(void)
	{
	# if !defined(CONFIG_SPL_BUILD)
	static ulong next_reset;
	ulong now;

	if (!watchdog_dev)
	return;

	now = timer_get_us();

	/* Do not reset the watchdog too often */
	if (now > next_reset) {
	wdt_reset(watchdog_dev);
	next_reset = now + 1000;
	}
	# endif
	}
	#endif

	int board_early_init_r(void)
	{
	u32 val;

	if (current_el() != 3)
	return 0;

	val = readl(&crlapb_base->timestamp_ref_ctrl);
	val &= ZYNQMP_CRL_APB_TIMESTAMP_REF_CTRL_CLKACT;

	if (!val) {
	val = readl(&crlapb_base->timestamp_ref_ctrl);
	val \|= ZYNQMP_CRL_APB_TIMESTAMP_REF_CTRL_CLKACT;
	writel(val, &crlapb_base->timestamp_ref_ctrl);

	/* Program freq register in System counter */
	writel(zynqmp_get_system_timer_freq(),
	&iou_scntr_secure->base_frequency_id_register);
	/* And enable system counter */
	writel(ZYNQMP_IOU_SCNTR_COUNTER_CONTROL_REGISTER_EN,
	&iou_scntr_secure->counter_control_register);
	}
	return 0;
	}

	int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
	{
	#if defined(CONFIG_ZYNQ_GEM_EEPROM_ADDR) && \
	defined(CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET) && \
	defined(CONFIG_ZYNQ_EEPROM_BUS)
	i2c_set_bus_num(CONFIG_ZYNQ_EEPROM_BUS);

	if (eeprom_read(CONFIG_ZYNQ_GEM_EEPROM_ADDR,
	CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET,
	ethaddr, 6))
	printf("I2C EEPROM MAC address read failed\n");
	#endif

	return 0;
	}

	unsigned long do_go_exec(ulong (entry)(int, char const []), int argc,
	char * const argv[])
	{
	int ret = 0;

	if (current_el() > 1) {
	smp_kick_all_cpus();
	dcache_disable();
	armv8_switch_to_el1(0x0, 0, 0, 0, (unsigned long)entry,
	ES_TO_AARCH64);
	} else {
	printf("FAIL: current EL is not above EL1\n");
	ret = EINVAL;
	}
	return ret;
	}

	#if !defined(CONFIG_SYS_SDRAM_BASE) && !defined(CONFIG_SYS_SDRAM_SIZE)
	int dram_init_banksize(void)
	{
	int ret;

	ret = fdtdec_setup_memory_banksize();
	if (ret)
	return ret;

	mem_map_fill();

	return 0;
	}

	int dram_init(void)
	{
	if (fdtdec_setup_mem_size_base() != 0)
	return -EINVAL;

	return 0;
	}
	#else
	int dram_init_banksize(void)
	{
	#if defined(CONFIG_NR_DRAM_BANKS)
	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
	gd->bd->bi_dram[0].size = get_effective_memsize();
	#endif

	mem_map_fill();

	return 0;
	}

	int dram_init(void)
	{
	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
	CONFIG_SYS_SDRAM_SIZE);

	return 0;
	}
	#endif

	void reset_cpu(ulong addr)
	{
	}

	static const struct {
	u32 bit;
	const char *name;
	} reset_reasons[] = {
	{ RESET_REASON_DEBUG_SYS, "DEBUG" },
	{ RESET_REASON_SOFT, "SOFT" },
	{ RESET_REASON_SRST, "SRST" },
	{ RESET_REASON_PSONLY, "PS-ONLY" },
	{ RESET_REASON_PMU, "PMU" },
	{ RESET_REASON_INTERNAL, "INTERNAL" },
	{ RESET_REASON_EXTERNAL, "EXTERNAL" },
	{}
	};

	static u32 reset_reason(void)
	{
	u32 ret;
	int i;
	const char *reason = NULL;

	ret = readl(&crlapb_base->reset_reason);

	puts("Reset reason:\t");

	for (i = 0; i < ARRAY_SIZE(reset_reasons); i++) {
	if (ret & reset_reasons[i].bit) {
	reason = reset_reasons[i].name;
	printf("%s ", reset_reasons[i].name);
	break;
	}
	}

	puts("\n");

	env_set("reset_reason", reason);

	writel(~0, &crlapb_base->reset_reason);

	return ret;
	}

	int board_late_init(void)
	{
	u32 reg = 0;
	u8 bootmode;
	struct udevice *dev;
	int bootseq = -1;
	int bootseq_len = 0;
	int env_targets_len = 0;
	const char *mode;
	char *new_targets;
	char *env_targets;
	int ret;

	#if defined(CONFIG_USB_ETHER) && !defined(CONFIG_USB_GADGET_DOWNLOAD)
	usb_ether_init();
	#endif

	if (!(gd->flags & GD_FLG_ENV_DEFAULT)) {
	debug("Saved variables - Skipping\n");
	return 0;
	}

	ret = zynqmp_mmio_read((ulong)&crlapb_base->boot_mode, &reg);
	if (ret)
	return -EINVAL;

	if (reg >> BOOT_MODE_ALT_SHIFT)
	reg >>= BOOT_MODE_ALT_SHIFT;

	bootmode = reg & BOOT_MODES_MASK;

	puts("Bootmode: ");
	switch (bootmode) {
	case USB_MODE:
	puts("USB_MODE\n");
	mode = "usb";
	env_set("modeboot", "usb_dfu_spl");
	break;
	case JTAG_MODE:
	puts("JTAG_MODE\n");
	mode = "pxe dhcp";
	env_set("modeboot", "jtagboot");
	break;
	case QSPI_MODE_24BIT:
	case QSPI_MODE_32BIT:
	mode = "qspi0";
	puts("QSPI_MODE\n");
	env_set("modeboot", "qspiboot");
	break;
	case EMMC_MODE:
	puts("EMMC_MODE\n");
	mode = "mmc0";
	env_set("modeboot", "emmcboot");
	break;
	case SD_MODE:
	puts("SD_MODE\n");
	if (uclass_get_device_by_name(UCLASS_MMC,
	"sdhci@ff160000", &dev)) {
	puts("Boot from SD0 but without SD0 enabled!\n");
	return -1;
	}
	debug("mmc0 device found at %p, seq %d\n", dev, dev->seq);

	mode = "mmc";
	bootseq = dev->seq;
	env_set("modeboot", "sdboot");
	break;
	case SD1_LSHFT_MODE:
	puts("LVL_SHFT_");
	/* fall through */
	case SD_MODE1:
	puts("SD_MODE1\n");
	if (uclass_get_device_by_name(UCLASS_MMC,
	"sdhci@ff170000", &dev)) {
	puts("Boot from SD1 but without SD1 enabled!\n");
	return -1;
	}
	debug("mmc1 device found at %p, seq %d\n", dev, dev->seq);

	mode = "mmc";
	bootseq = dev->seq;
	env_set("modeboot", "sdboot");
	break;
	case NAND_MODE:
	puts("NAND_MODE\n");
	mode = "nand0";
	env_set("modeboot", "nandboot");
	break;
	default:
	mode = "";
	printf("Invalid Boot Mode:0x%x\n", bootmode);
	break;
	}

	if (bootseq >= 0) {
	bootseq_len = snprintf(NULL, 0, "%i", bootseq);
	debug("Bootseq len: %x\n", bootseq_len);
	}

	/*
	* One terminating char + one byte for space between mode
	* and default boot_targets
	*/
	env_targets = env_get("boot_targets");
	if (env_targets)
	env_targets_len = strlen(env_targets);

	new_targets = calloc(1, strlen(mode) + env_targets_len + 2 +
	bootseq_len);
	if (!new_targets)
	return -ENOMEM;

	if (bootseq >= 0)
	sprintf(new_targets, "%s%x %s", mode, bootseq,
	env_targets ? env_targets : "");
	else
	sprintf(new_targets, "%s %s", mode,
	env_targets ? env_targets : "");

	env_set("boot_targets", new_targets);

	reset_reason();

	return 0;
	}

	int checkboard(void)
	{
	puts("Board: Xilinx ZynqMP\n");
	return 0;
	}