arch/arm/mach-k3/am625_init.c - github/trini/u-boot - Gitiles

 // SPDX-License-Identifier: GPL-2.0
 /*
  * AM625: SoC specific initialization
  *
  * Copyright (C) 2020-2022 Texas Instruments Incorporated - https://www.ti.com/
  *	Suman Anna <s-anna@ti.com>
  */

 #include <spl.h>
 #include <asm/io.h>
 #include <asm/arch/hardware.h>
 #include "sysfw-loader.h"
 #include "common.h"
 #include <dm.h>
 #include <dm/uclass-internal.h>
 #include <dm/pinctrl.h>

 /*
  * This uninitialized global variable would normal end up in the .bss section,
  * but the .bss is cleared between writing and reading this variable, so move
  * it to the .data section.
  */
 u32 bootindex __section(".data");
 static struct rom_extended_boot_data bootdata __section(".data");

 static void store_boot_info_from_rom(void)
 {
 	bootindex = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
 	memcpy(&bootdata, (uintptr_t *)ROM_EXTENDED_BOOT_DATA_INFO,
 	       sizeof(struct rom_extended_boot_data));
 }

 static void ctrl_mmr_unlock(void)
 {
 	/* Unlock all WKUP_CTRL_MMR0 module registers */
 	mmr_unlock(WKUP_CTRL_MMR0_BASE, 0);
 	mmr_unlock(WKUP_CTRL_MMR0_BASE, 1);
 	mmr_unlock(WKUP_CTRL_MMR0_BASE, 2);
 	mmr_unlock(WKUP_CTRL_MMR0_BASE, 3);
 	mmr_unlock(WKUP_CTRL_MMR0_BASE, 4);
 	mmr_unlock(WKUP_CTRL_MMR0_BASE, 5);
 	mmr_unlock(WKUP_CTRL_MMR0_BASE, 6);
 	mmr_unlock(WKUP_CTRL_MMR0_BASE, 7);

 	/* Unlock all CTRL_MMR0 module registers */
 	mmr_unlock(CTRL_MMR0_BASE, 0);
 	mmr_unlock(CTRL_MMR0_BASE, 1);
 	mmr_unlock(CTRL_MMR0_BASE, 2);
 	mmr_unlock(CTRL_MMR0_BASE, 4);
 	mmr_unlock(CTRL_MMR0_BASE, 6);

 	/* Unlock all MCU_CTRL_MMR0 module registers */
 	mmr_unlock(MCU_CTRL_MMR0_BASE, 0);
 	mmr_unlock(MCU_CTRL_MMR0_BASE, 1);
 	mmr_unlock(MCU_CTRL_MMR0_BASE, 2);
 	mmr_unlock(MCU_CTRL_MMR0_BASE, 3);
 	mmr_unlock(MCU_CTRL_MMR0_BASE, 4);
 	mmr_unlock(MCU_CTRL_MMR0_BASE, 6);

 	/* Unlock PADCFG_CTRL_MMR padconf registers */
 	mmr_unlock(PADCFG_MMR0_BASE, 1);
 	mmr_unlock(PADCFG_MMR1_BASE, 1);
 }

 static __maybe_unused void enable_mcu_esm_reset(void)
 {
 	/* Set CTRLMMR_MCU_RST_CTRL:MCU_ESM_ERROR_RST_EN_Z  to '0' (low active) */
 	u32 stat = readl(CTRLMMR_MCU_RST_CTRL);

 	stat &= RST_CTRL_ESM_ERROR_RST_EN_Z_MASK;
 	writel(stat, CTRLMMR_MCU_RST_CTRL);
 }

 void board_init_f(ulong dummy)
 {
 	struct udevice *dev;
 	int ret;

 #if defined(CONFIG_CPU_V7R)
 	setup_k3_mpu_regions();
 #endif

 	/*
 	 * Cannot delay this further as there is a chance that
 	 * K3_BOOT_PARAM_TABLE_INDEX can be over written by SPL MALLOC section.
 	 */
 	store_boot_info_from_rom();

 	ctrl_mmr_unlock();

 	/* Init DM early */
 	spl_early_init();

 	/*
 	 * Process pinctrl for the serial0 and serial3, aka WKUP_UART0 and
 	 * MAIN_UART1 modules and continue regardless of the result of pinctrl.
 	 * Do this without probing the device, but instead by searching the
 	 * device that would request the given sequence number if probed. The
 	 * UARTs will be used by the DM firmware and TIFS firmware images
 	 * respectively and the firmware depend on SPL to initialize the pin
 	 * settings.
 	 */
 	ret = uclass_find_device_by_seq(UCLASS_SERIAL, 0, &dev);
 	if (!ret)
 		pinctrl_select_state(dev, "default");

 	ret = uclass_find_device_by_seq(UCLASS_SERIAL, 3, &dev);
 	if (!ret)
 		pinctrl_select_state(dev, "default");

 	preloader_console_init();

 #ifdef CONFIG_K3_EARLY_CONS
 	/*
 	 * Allow establishing an early console as required for example when
 	 * doing a UART-based boot. Note that this console may not "survive"
 	 * through a SYSFW PM-init step and will need a re-init in some way
 	 * due to changing module clock frequencies.
 	 */
 	early_console_init();
 #endif

 #if defined(CONFIG_K3_LOAD_SYSFW)
 	/*
 	 * Configure and start up system controller firmware. Provide
 	 * the U-Boot console init function to the SYSFW post-PM configuration
 	 * callback hook, effectively switching on (or over) the console
 	 * output.
 	 */
 	ret = is_rom_loaded_sysfw(&bootdata);
 	if (!ret)
 		panic("ROM has not loaded TIFS firmware\n");

 	k3_sysfw_loader(true, NULL, NULL);
 #endif

 	/*
 	 * Force probe of clk_k3 driver here to ensure basic default clock
 	 * configuration is always done.
 	 */
 	if (IS_ENABLED(CONFIG_SPL_CLK_K3)) {
 		ret = uclass_get_device_by_driver(UCLASS_CLK,
 						  DM_DRIVER_GET(ti_clk),
 						  &dev);
 		if (ret)
 			printf("Failed to initialize clk-k3!\n");
 	}

 	/* Output System Firmware version info */
 	k3_sysfw_print_ver();

 	if (IS_ENABLED(CONFIG_ESM_K3)) {
 		/* Probe/configure ESM0 */
 		ret = uclass_get_device_by_name(UCLASS_MISC, "esm@420000", &dev);
 		if (ret)
 			printf("esm main init failed: %d\n", ret);

 		/* Probe/configure MCUESM */
 		ret = uclass_get_device_by_name(UCLASS_MISC, "esm@4100000", &dev);
 		if (ret)
 			printf("esm mcu init failed: %d\n", ret);

 		enable_mcu_esm_reset();
 	}

 #if defined(CONFIG_K3_AM64_DDRSS)
 	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
 	if (ret)
 		panic("DRAM init failed: %d\n", ret);
 #endif
 }

 u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device)
 {
 	u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
 	u32 bootmode = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
 				MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;
 	u32 bootmode_cfg = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_MASK) >>
 			    MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_SHIFT;


 	switch (bootmode) {
 	case BOOT_DEVICE_EMMC:
 		return MMCSD_MODE_EMMCBOOT;
 	case BOOT_DEVICE_MMC:
 		if (bootmode_cfg & MAIN_DEVSTAT_PRIMARY_MMC_FS_RAW_MASK)
 			return MMCSD_MODE_RAW;
 	default:
 		return MMCSD_MODE_FS;
 	}
 }

 static u32 __get_backup_bootmedia(u32 devstat)
 {
 	u32 bkup_bootmode = (devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_MASK) >>
 				MAIN_DEVSTAT_BACKUP_BOOTMODE_SHIFT;
 	u32 bkup_bootmode_cfg =
 			(devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_MASK) >>
 				MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_SHIFT;

 	switch (bkup_bootmode) {
 	case BACKUP_BOOT_DEVICE_UART:
 		return BOOT_DEVICE_UART;

 	case BACKUP_BOOT_DEVICE_USB:
 		return BOOT_DEVICE_USB;

 	case BACKUP_BOOT_DEVICE_ETHERNET:
 		return BOOT_DEVICE_ETHERNET;

 	case BACKUP_BOOT_DEVICE_MMC:
 		if (bkup_bootmode_cfg)
 			return BOOT_DEVICE_MMC2;
 		return BOOT_DEVICE_MMC1;

 	case BACKUP_BOOT_DEVICE_SPI:
 		return BOOT_DEVICE_SPI;

 	case BACKUP_BOOT_DEVICE_I2C:
 		return BOOT_DEVICE_I2C;

 	case BACKUP_BOOT_DEVICE_DFU:
 		if (bkup_bootmode_cfg & MAIN_DEVSTAT_BACKUP_USB_MODE_MASK)
 			return BOOT_DEVICE_USB;
 		return BOOT_DEVICE_DFU;
 	};

 	return BOOT_DEVICE_RAM;
 }

 static u32 __get_primary_bootmedia(u32 devstat)
 {
 	u32 bootmode = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
 				MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;
 	u32 bootmode_cfg = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_MASK) >>
 				MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_SHIFT;

 	switch (bootmode) {
 	case BOOT_DEVICE_OSPI:
 		fallthrough;
 	case BOOT_DEVICE_QSPI:
 		fallthrough;
 	case BOOT_DEVICE_XSPI:
 		fallthrough;
 	case BOOT_DEVICE_SPI:
 		return BOOT_DEVICE_SPI;

 	case BOOT_DEVICE_ETHERNET_RGMII:
 		fallthrough;
 	case BOOT_DEVICE_ETHERNET_RMII:
 		return BOOT_DEVICE_ETHERNET;

 	case BOOT_DEVICE_EMMC:
 		return BOOT_DEVICE_MMC1;

 	case BOOT_DEVICE_MMC:
 		if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_MMC_PORT_MASK) >>
 				MAIN_DEVSTAT_PRIMARY_MMC_PORT_SHIFT)
 			return BOOT_DEVICE_MMC2;
 		return BOOT_DEVICE_MMC1;

 	case BOOT_DEVICE_DFU:
 		if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_USB_MODE_MASK) >>
 		    MAIN_DEVSTAT_PRIMARY_USB_MODE_SHIFT)
 			return BOOT_DEVICE_USB;
 		return BOOT_DEVICE_DFU;

 	case BOOT_DEVICE_NOBOOT:
 		return BOOT_DEVICE_RAM;
 	}

 	return bootmode;
 }

 u32 spl_boot_device(void)
 {
 	u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
 	u32 bootmedia;

 	if (bootindex == K3_PRIMARY_BOOTMODE)
 		bootmedia = __get_primary_bootmedia(devstat);
 	else
 		bootmedia = __get_backup_bootmedia(devstat);

 	debug("am625_init: %s: devstat = 0x%x bootmedia = 0x%x bootindex = %d\n",
 	      __func__, devstat, bootmedia, bootindex);

 	return bootmedia;
 }
	// SPDX-License-Identifier: GPL-2.0
	/*
	* AM625: SoC specific initialization
	*
	* Copyright (C) 2020-2022 Texas Instruments Incorporated - https://www.ti.com/
	* Suman Anna <s-anna@ti.com>
	*/

	#include <spl.h>
	#include <asm/io.h>
	#include <asm/arch/hardware.h>
	#include "sysfw-loader.h"
	#include "common.h"
	#include <dm.h>
	#include <dm/uclass-internal.h>
	#include <dm/pinctrl.h>

	/*
	* This uninitialized global variable would normal end up in the .bss section,
	* but the .bss is cleared between writing and reading this variable, so move
	* it to the .data section.
	*/
	u32 bootindex __section(".data");
	static struct rom_extended_boot_data bootdata __section(".data");

	static void store_boot_info_from_rom(void)
	{
	bootindex = (u32 )(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
	memcpy(&bootdata, (uintptr_t *)ROM_EXTENDED_BOOT_DATA_INFO,
	sizeof(struct rom_extended_boot_data));
	}

	static void ctrl_mmr_unlock(void)
	{
	/* Unlock all WKUP_CTRL_MMR0 module registers */
	mmr_unlock(WKUP_CTRL_MMR0_BASE, 0);
	mmr_unlock(WKUP_CTRL_MMR0_BASE, 1);
	mmr_unlock(WKUP_CTRL_MMR0_BASE, 2);
	mmr_unlock(WKUP_CTRL_MMR0_BASE, 3);
	mmr_unlock(WKUP_CTRL_MMR0_BASE, 4);
	mmr_unlock(WKUP_CTRL_MMR0_BASE, 5);
	mmr_unlock(WKUP_CTRL_MMR0_BASE, 6);
	mmr_unlock(WKUP_CTRL_MMR0_BASE, 7);

	/* Unlock all CTRL_MMR0 module registers */
	mmr_unlock(CTRL_MMR0_BASE, 0);
	mmr_unlock(CTRL_MMR0_BASE, 1);
	mmr_unlock(CTRL_MMR0_BASE, 2);
	mmr_unlock(CTRL_MMR0_BASE, 4);
	mmr_unlock(CTRL_MMR0_BASE, 6);

	/* Unlock all MCU_CTRL_MMR0 module registers */
	mmr_unlock(MCU_CTRL_MMR0_BASE, 0);
	mmr_unlock(MCU_CTRL_MMR0_BASE, 1);
	mmr_unlock(MCU_CTRL_MMR0_BASE, 2);
	mmr_unlock(MCU_CTRL_MMR0_BASE, 3);
	mmr_unlock(MCU_CTRL_MMR0_BASE, 4);
	mmr_unlock(MCU_CTRL_MMR0_BASE, 6);

	/* Unlock PADCFG_CTRL_MMR padconf registers */
	mmr_unlock(PADCFG_MMR0_BASE, 1);
	mmr_unlock(PADCFG_MMR1_BASE, 1);
	}

	static __maybe_unused void enable_mcu_esm_reset(void)
	{
	/* Set CTRLMMR_MCU_RST_CTRL:MCU_ESM_ERROR_RST_EN_Z to '0' (low active) */
	u32 stat = readl(CTRLMMR_MCU_RST_CTRL);

	stat &= RST_CTRL_ESM_ERROR_RST_EN_Z_MASK;
	writel(stat, CTRLMMR_MCU_RST_CTRL);
	}

	void board_init_f(ulong dummy)
	{
	struct udevice *dev;
	int ret;

	#if defined(CONFIG_CPU_V7R)
	setup_k3_mpu_regions();
	#endif

	/*
	* Cannot delay this further as there is a chance that
	* K3_BOOT_PARAM_TABLE_INDEX can be over written by SPL MALLOC section.
	*/
	store_boot_info_from_rom();

	ctrl_mmr_unlock();

	/* Init DM early */
	spl_early_init();

	/*
	* Process pinctrl for the serial0 and serial3, aka WKUP_UART0 and
	* MAIN_UART1 modules and continue regardless of the result of pinctrl.
	* Do this without probing the device, but instead by searching the
	* device that would request the given sequence number if probed. The
	* UARTs will be used by the DM firmware and TIFS firmware images
	* respectively and the firmware depend on SPL to initialize the pin
	* settings.
	*/
	ret = uclass_find_device_by_seq(UCLASS_SERIAL, 0, &dev);
	if (!ret)
	pinctrl_select_state(dev, "default");

	ret = uclass_find_device_by_seq(UCLASS_SERIAL, 3, &dev);
	if (!ret)
	pinctrl_select_state(dev, "default");

	preloader_console_init();

	#ifdef CONFIG_K3_EARLY_CONS
	/*
	* Allow establishing an early console as required for example when
	* doing a UART-based boot. Note that this console may not "survive"
	* through a SYSFW PM-init step and will need a re-init in some way
	* due to changing module clock frequencies.
	*/
	early_console_init();
	#endif

	#if defined(CONFIG_K3_LOAD_SYSFW)
	/*
	* Configure and start up system controller firmware. Provide
	* the U-Boot console init function to the SYSFW post-PM configuration
	* callback hook, effectively switching on (or over) the console
	* output.
	*/
	ret = is_rom_loaded_sysfw(&bootdata);
	if (!ret)
	panic("ROM has not loaded TIFS firmware\n");

	k3_sysfw_loader(true, NULL, NULL);
	#endif

	/*
	* Force probe of clk_k3 driver here to ensure basic default clock
	* configuration is always done.
	*/
	if (IS_ENABLED(CONFIG_SPL_CLK_K3)) {
	ret = uclass_get_device_by_driver(UCLASS_CLK,
	DM_DRIVER_GET(ti_clk),
	&dev);
	if (ret)
	printf("Failed to initialize clk-k3!\n");
	}

	/* Output System Firmware version info */
	k3_sysfw_print_ver();

	if (IS_ENABLED(CONFIG_ESM_K3)) {
	/* Probe/configure ESM0 */
	ret = uclass_get_device_by_name(UCLASS_MISC, "esm@420000", &dev);
	if (ret)
	printf("esm main init failed: %d\n", ret);

	/* Probe/configure MCUESM */
	ret = uclass_get_device_by_name(UCLASS_MISC, "esm@4100000", &dev);
	if (ret)
	printf("esm mcu init failed: %d\n", ret);

	enable_mcu_esm_reset();
	}

	#if defined(CONFIG_K3_AM64_DDRSS)
	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
	if (ret)
	panic("DRAM init failed: %d\n", ret);
	#endif
	}

	u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device)
	{
	u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
	u32 bootmode = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
	MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;
	u32 bootmode_cfg = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_MASK) >>
	MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_SHIFT;


	switch (bootmode) {
	case BOOT_DEVICE_EMMC:
	return MMCSD_MODE_EMMCBOOT;
	case BOOT_DEVICE_MMC:
	if (bootmode_cfg & MAIN_DEVSTAT_PRIMARY_MMC_FS_RAW_MASK)
	return MMCSD_MODE_RAW;
	default:
	return MMCSD_MODE_FS;
	}
	}

	static u32 __get_backup_bootmedia(u32 devstat)
	{
	u32 bkup_bootmode = (devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_MASK) >>
	MAIN_DEVSTAT_BACKUP_BOOTMODE_SHIFT;
	u32 bkup_bootmode_cfg =
	(devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_MASK) >>
	MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_SHIFT;

	switch (bkup_bootmode) {
	case BACKUP_BOOT_DEVICE_UART:
	return BOOT_DEVICE_UART;

	case BACKUP_BOOT_DEVICE_USB:
	return BOOT_DEVICE_USB;

	case BACKUP_BOOT_DEVICE_ETHERNET:
	return BOOT_DEVICE_ETHERNET;

	case BACKUP_BOOT_DEVICE_MMC:
	if (bkup_bootmode_cfg)
	return BOOT_DEVICE_MMC2;
	return BOOT_DEVICE_MMC1;

	case BACKUP_BOOT_DEVICE_SPI:
	return BOOT_DEVICE_SPI;

	case BACKUP_BOOT_DEVICE_I2C:
	return BOOT_DEVICE_I2C;

	case BACKUP_BOOT_DEVICE_DFU:
	if (bkup_bootmode_cfg & MAIN_DEVSTAT_BACKUP_USB_MODE_MASK)
	return BOOT_DEVICE_USB;
	return BOOT_DEVICE_DFU;
	};

	return BOOT_DEVICE_RAM;
	}

	static u32 __get_primary_bootmedia(u32 devstat)
	{
	u32 bootmode = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
	MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;
	u32 bootmode_cfg = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_MASK) >>
	MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_SHIFT;

	switch (bootmode) {
	case BOOT_DEVICE_OSPI:
	fallthrough;
	case BOOT_DEVICE_QSPI:
	fallthrough;
	case BOOT_DEVICE_XSPI:
	fallthrough;
	case BOOT_DEVICE_SPI:
	return BOOT_DEVICE_SPI;

	case BOOT_DEVICE_ETHERNET_RGMII:
	fallthrough;
	case BOOT_DEVICE_ETHERNET_RMII:
	return BOOT_DEVICE_ETHERNET;

	case BOOT_DEVICE_EMMC:
	return BOOT_DEVICE_MMC1;

	case BOOT_DEVICE_MMC:
	if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_MMC_PORT_MASK) >>
	MAIN_DEVSTAT_PRIMARY_MMC_PORT_SHIFT)
	return BOOT_DEVICE_MMC2;
	return BOOT_DEVICE_MMC1;

	case BOOT_DEVICE_DFU:
	if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_USB_MODE_MASK) >>
	MAIN_DEVSTAT_PRIMARY_USB_MODE_SHIFT)
	return BOOT_DEVICE_USB;
	return BOOT_DEVICE_DFU;

	case BOOT_DEVICE_NOBOOT:
	return BOOT_DEVICE_RAM;
	}

	return bootmode;
	}

	u32 spl_boot_device(void)
	{
	u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
	u32 bootmedia;

	if (bootindex == K3_PRIMARY_BOOTMODE)
	bootmedia = __get_primary_bootmedia(devstat);
	else
	bootmedia = __get_backup_bootmedia(devstat);

	debug("am625_init: %s: devstat = 0x%x bootmedia = 0x%x bootindex = %d\n",
	__func__, devstat, bootmedia, bootindex);

	return bootmedia;
	}