board/xilinx/versal/board.c - github/trini/u-boot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2014 - 2018 Xilinx, Inc.
  * Michal Simek <michal.simek@amd.com>
  */

 #include <command.h>
 #include <common.h>
 #include <cpu_func.h>
 #include <env.h>
 #include <fdtdec.h>
 #include <init.h>
 #include <env_internal.h>
 #include <log.h>
 #include <malloc.h>
 #include <time.h>
 #include <asm/cache.h>
 #include <asm/global_data.h>
 #include <asm/io.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/sys_proto.h>
 #include <dm/device.h>
 #include <dm/uclass.h>
 #include <versalpl.h>
 #include "../common/board.h"

 DECLARE_GLOBAL_DATA_PTR;

 #if defined(CONFIG_FPGA_VERSALPL)
 static xilinx_desc versalpl = {
 	xilinx_versal, csu_dma, 1, &versal_op, 0, &versal_op, NULL,
 	FPGA_LEGACY
 };
 #endif

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

 #if defined(CONFIG_FPGA_VERSALPL)
 	fpga_init();
 	fpga_add(fpga_xilinx, &versalpl);
 #endif

 	if (CONFIG_IS_ENABLED(DM_I2C) && CONFIG_IS_ENABLED(I2C_EEPROM))
 		xilinx_read_eeprom();

 	return 0;
 }

 int board_early_init_r(void)
 {
 	u32 val;

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

 	debug("iou_switch ctrl div0 %x\n",
 	      readl(&crlapb_base->iou_switch_ctrl));

 	writel(IOU_SWITCH_CTRL_CLKACT_BIT |
 	       (CONFIG_IOU_SWITCH_DIVISOR0 << IOU_SWITCH_CTRL_DIVISOR0_SHIFT),
 	       &crlapb_base->iou_switch_ctrl);

 	/* Global timer init - Program time stamp reference clk */
 	val = readl(&crlapb_base->timestamp_ref_ctrl);
 	val |= CRL_APB_TIMESTAMP_REF_CTRL_CLKACT_BIT;
 	writel(val, &crlapb_base->timestamp_ref_ctrl);

 	debug("ref ctrl 0x%x\n",
 	      readl(&crlapb_base->timestamp_ref_ctrl));

 	/* Clear reset of timestamp reg */
 	writel(0, &crlapb_base->rst_timestamp);

 	/*
 	 * Program freq register in System counter and
 	 * enable system counter.
 	 */
 	writel(CONFIG_COUNTER_FREQUENCY,
 	       &iou_scntr_secure->base_frequency_id_register);

 	debug("counter val 0x%x\n",
 	      readl(&iou_scntr_secure->base_frequency_id_register));

 	writel(IOU_SCNTRS_CONTROL_EN,
 	       &iou_scntr_secure->counter_control_register);

 	debug("scntrs control 0x%x\n",
 	      readl(&iou_scntr_secure->counter_control_register));
 	debug("timer 0x%llx\n", get_ticks());
 	debug("timer 0x%llx\n", get_ticks());

 	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;
 }

 static u8 versal_get_bootmode(void)
 {
 	u8 bootmode;
 	u32 reg = 0;

 	reg = readl(&crp_base->boot_mode_usr);

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

 	bootmode = reg & BOOT_MODES_MASK;

 	return bootmode;
 }

 static int boot_targets_setup(void)
 {
 	u8 bootmode;
 	struct udevice *dev;
 	int bootseq = -1;
 	int bootseq_len = 0;
 	int env_targets_len = 0;
 	const char *mode = NULL;
 	char *new_targets;
 	char *env_targets;

 	bootmode = versal_get_bootmode();

 	puts("Bootmode: ");
 	switch (bootmode) {
 	case USB_MODE:
 		puts("USB_MODE\n");
 		mode = "usb_dfu0 usb_dfu1";
 		break;
 	case JTAG_MODE:
 		puts("JTAG_MODE\n");
 		mode = "jtag pxe dhcp";
 		break;
 	case QSPI_MODE_24BIT:
 		puts("QSPI_MODE_24\n");
 		mode = "xspi0";
 		break;
 	case QSPI_MODE_32BIT:
 		puts("QSPI_MODE_32\n");
 		mode = "xspi0";
 		break;
 	case OSPI_MODE:
 		puts("OSPI_MODE\n");
 		mode = "xspi0";
 		break;
 	case EMMC_MODE:
 		puts("EMMC_MODE\n");
 		if (uclass_get_device_by_name(UCLASS_MMC,
 					      "mmc@f1050000", &dev) &&
 		    uclass_get_device_by_name(UCLASS_MMC,
 					      "sdhci@f1050000", &dev)) {
 			debug("SD1 driver for SD1 device is not present\n");
 			break;
 		}
 		debug("mmc1 device found at %p, seq %d\n", dev, dev_seq(dev));
 		mode = "mmc";
 		bootseq = dev_seq(dev);
 		break;
 	case SELECTMAP_MODE:
 		puts("SELECTMAP_MODE\n");
 		break;
 	case SD_MODE:
 		puts("SD_MODE\n");
 		if (uclass_get_device_by_name(UCLASS_MMC,
 					      "mmc@f1040000", &dev) &&
 		    uclass_get_device_by_name(UCLASS_MMC,
 					      "sdhci@f1040000", &dev)) {
 			debug("SD0 driver for SD0 device is not present\n");
 			break;
 		}
 		debug("mmc0 device found at %p, seq %d\n", dev, dev_seq(dev));

 		mode = "mmc";
 		bootseq = dev_seq(dev);
 		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,
 					      "mmc@f1050000", &dev) &&
 		    uclass_get_device_by_name(UCLASS_MMC,
 					      "sdhci@f1050000", &dev)) {
 			debug("SD1 driver for SD1 device is not present\n");
 			break;
 		}
 		debug("mmc1 device found at %p, seq %d\n", dev, dev_seq(dev));

 		mode = "mmc";
 		bootseq = dev_seq(dev);
 		break;
 	default:
 		printf("Invalid Boot Mode:0x%x\n", bootmode);
 		break;
 	}

 	if (mode) {
 		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);
 	}

 	return 0;
 }

 int board_late_init(void)
 {
 	int ret;

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

 	if (!IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG))
 		return 0;

 	if (IS_ENABLED(CONFIG_DISTRO_DEFAULTS)) {
 		ret = boot_targets_setup();
 		if (ret)
 			return ret;
 	}

 	return board_late_init_xilinx();
 }

 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_lowest() != 0)
 		return -EINVAL;

 	return 0;
 }

 void reset_cpu(void)
 {
 }

 #if defined(CONFIG_ENV_IS_NOWHERE)
 enum env_location env_get_location(enum env_operation op, int prio)
 {
 	u32 bootmode = versal_get_bootmode();

 	if (prio)
 		return ENVL_UNKNOWN;

 	switch (bootmode) {
 	case EMMC_MODE:
 	case SD_MODE:
 	case SD1_LSHFT_MODE:
 	case SD_MODE1:
 		if (IS_ENABLED(CONFIG_ENV_IS_IN_FAT))
 			return ENVL_FAT;
 		if (IS_ENABLED(CONFIG_ENV_IS_IN_EXT4))
 			return ENVL_EXT4;
 		return ENVL_NOWHERE;
 	case OSPI_MODE:
 	case QSPI_MODE_24BIT:
 	case QSPI_MODE_32BIT:
 		if (IS_ENABLED(CONFIG_ENV_IS_IN_SPI_FLASH))
 			return ENVL_SPI_FLASH;
 		return ENVL_NOWHERE;
 	case JTAG_MODE:
 	case SELECTMAP_MODE:
 	default:
 		return ENVL_NOWHERE;
 	}
 }
 #endif
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* (C) Copyright 2014 - 2018 Xilinx, Inc.
	* Michal Simek <michal.simek@amd.com>
	*/

	#include <command.h>
	#include <common.h>
	#include <cpu_func.h>
	#include <env.h>
	#include <fdtdec.h>
	#include <init.h>
	#include <env_internal.h>
	#include <log.h>
	#include <malloc.h>
	#include <time.h>
	#include <asm/cache.h>
	#include <asm/global_data.h>
	#include <asm/io.h>
	#include <asm/arch/hardware.h>
	#include <asm/arch/sys_proto.h>
	#include <dm/device.h>
	#include <dm/uclass.h>
	#include <versalpl.h>
	#include "../common/board.h"

	DECLARE_GLOBAL_DATA_PTR;

	#if defined(CONFIG_FPGA_VERSALPL)
	static xilinx_desc versalpl = {
	xilinx_versal, csu_dma, 1, &versal_op, 0, &versal_op, NULL,
	FPGA_LEGACY
	};
	#endif

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

	#if defined(CONFIG_FPGA_VERSALPL)
	fpga_init();
	fpga_add(fpga_xilinx, &versalpl);
	#endif

	if (CONFIG_IS_ENABLED(DM_I2C) && CONFIG_IS_ENABLED(I2C_EEPROM))
	xilinx_read_eeprom();

	return 0;
	}

	int board_early_init_r(void)
	{
	u32 val;

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

	debug("iou_switch ctrl div0 %x\n",
	readl(&crlapb_base->iou_switch_ctrl));

	writel(IOU_SWITCH_CTRL_CLKACT_BIT \|
	(CONFIG_IOU_SWITCH_DIVISOR0 << IOU_SWITCH_CTRL_DIVISOR0_SHIFT),
	&crlapb_base->iou_switch_ctrl);

	/* Global timer init - Program time stamp reference clk */
	val = readl(&crlapb_base->timestamp_ref_ctrl);
	val \|= CRL_APB_TIMESTAMP_REF_CTRL_CLKACT_BIT;
	writel(val, &crlapb_base->timestamp_ref_ctrl);

	debug("ref ctrl 0x%x\n",
	readl(&crlapb_base->timestamp_ref_ctrl));

	/* Clear reset of timestamp reg */
	writel(0, &crlapb_base->rst_timestamp);

	/*
	* Program freq register in System counter and
	* enable system counter.
	*/
	writel(CONFIG_COUNTER_FREQUENCY,
	&iou_scntr_secure->base_frequency_id_register);

	debug("counter val 0x%x\n",
	readl(&iou_scntr_secure->base_frequency_id_register));

	writel(IOU_SCNTRS_CONTROL_EN,
	&iou_scntr_secure->counter_control_register);

	debug("scntrs control 0x%x\n",
	readl(&iou_scntr_secure->counter_control_register));
	debug("timer 0x%llx\n", get_ticks());
	debug("timer 0x%llx\n", get_ticks());

	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;
	}

	static u8 versal_get_bootmode(void)
	{
	u8 bootmode;
	u32 reg = 0;

	reg = readl(&crp_base->boot_mode_usr);

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

	bootmode = reg & BOOT_MODES_MASK;

	return bootmode;
	}

	static int boot_targets_setup(void)
	{
	u8 bootmode;
	struct udevice *dev;
	int bootseq = -1;
	int bootseq_len = 0;
	int env_targets_len = 0;
	const char *mode = NULL;
	char *new_targets;
	char *env_targets;

	bootmode = versal_get_bootmode();

	puts("Bootmode: ");
	switch (bootmode) {
	case USB_MODE:
	puts("USB_MODE\n");
	mode = "usb_dfu0 usb_dfu1";
	break;
	case JTAG_MODE:
	puts("JTAG_MODE\n");
	mode = "jtag pxe dhcp";
	break;
	case QSPI_MODE_24BIT:
	puts("QSPI_MODE_24\n");
	mode = "xspi0";
	break;
	case QSPI_MODE_32BIT:
	puts("QSPI_MODE_32\n");
	mode = "xspi0";
	break;
	case OSPI_MODE:
	puts("OSPI_MODE\n");
	mode = "xspi0";
	break;
	case EMMC_MODE:
	puts("EMMC_MODE\n");
	if (uclass_get_device_by_name(UCLASS_MMC,
	"mmc@f1050000", &dev) &&
	uclass_get_device_by_name(UCLASS_MMC,
	"sdhci@f1050000", &dev)) {
	debug("SD1 driver for SD1 device is not present\n");
	break;
	}
	debug("mmc1 device found at %p, seq %d\n", dev, dev_seq(dev));
	mode = "mmc";
	bootseq = dev_seq(dev);
	break;
	case SELECTMAP_MODE:
	puts("SELECTMAP_MODE\n");
	break;
	case SD_MODE:
	puts("SD_MODE\n");
	if (uclass_get_device_by_name(UCLASS_MMC,
	"mmc@f1040000", &dev) &&
	uclass_get_device_by_name(UCLASS_MMC,
	"sdhci@f1040000", &dev)) {
	debug("SD0 driver for SD0 device is not present\n");
	break;
	}
	debug("mmc0 device found at %p, seq %d\n", dev, dev_seq(dev));

	mode = "mmc";
	bootseq = dev_seq(dev);
	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,
	"mmc@f1050000", &dev) &&
	uclass_get_device_by_name(UCLASS_MMC,
	"sdhci@f1050000", &dev)) {
	debug("SD1 driver for SD1 device is not present\n");
	break;
	}
	debug("mmc1 device found at %p, seq %d\n", dev, dev_seq(dev));

	mode = "mmc";
	bootseq = dev_seq(dev);
	break;
	default:
	printf("Invalid Boot Mode:0x%x\n", bootmode);
	break;
	}

	if (mode) {
	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);
	}

	return 0;
	}

	int board_late_init(void)
	{
	int ret;

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

	if (!IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG))
	return 0;

	if (IS_ENABLED(CONFIG_DISTRO_DEFAULTS)) {
	ret = boot_targets_setup();
	if (ret)
	return ret;
	}

	return board_late_init_xilinx();
	}

	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_lowest() != 0)
	return -EINVAL;

	return 0;
	}

	void reset_cpu(void)
	{
	}

	#if defined(CONFIG_ENV_IS_NOWHERE)
	enum env_location env_get_location(enum env_operation op, int prio)
	{
	u32 bootmode = versal_get_bootmode();

	if (prio)
	return ENVL_UNKNOWN;

	switch (bootmode) {
	case EMMC_MODE:
	case SD_MODE:
	case SD1_LSHFT_MODE:
	case SD_MODE1:
	if (IS_ENABLED(CONFIG_ENV_IS_IN_FAT))
	return ENVL_FAT;
	if (IS_ENABLED(CONFIG_ENV_IS_IN_EXT4))
	return ENVL_EXT4;
	return ENVL_NOWHERE;
	case OSPI_MODE:
	case QSPI_MODE_24BIT:
	case QSPI_MODE_32BIT:
	if (IS_ENABLED(CONFIG_ENV_IS_IN_SPI_FLASH))
	return ENVL_SPI_FLASH;
	return ENVL_NOWHERE;
	case JTAG_MODE:
	case SELECTMAP_MODE:
	default:
	return ENVL_NOWHERE;
	}
	}
	#endif