arch/arm/mach-k3/am6_init.c - u-boot-mtk - Git at Google

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * K3: Architecture initialization
  *
  * Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
  *	Lokesh Vutla <lokeshvutla@ti.com>
  */

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

 #ifdef CONFIG_SPL_BUILD
 static void mmr_unlock(u32 base, u32 partition)
 {
 	/* Translate the base address */
 	phys_addr_t part_base = base + partition * CTRL_MMR0_PARTITION_SIZE;

 	/* Unlock the requested partition if locked using two-step sequence */
 	writel(CTRLMMR_LOCK_KICK0_UNLOCK_VAL, part_base + CTRLMMR_LOCK_KICK0);
 	writel(CTRLMMR_LOCK_KICK1_UNLOCK_VAL, part_base + CTRLMMR_LOCK_KICK1);
 }

 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, 6);
 	mmr_unlock(WKUP_CTRL_MMR0_BASE, 7);

 	/* 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, 6);

 	/* 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, 3);
 	mmr_unlock(CTRL_MMR0_BASE, 6);
 	mmr_unlock(CTRL_MMR0_BASE, 7);
 }

 /*
  * 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 __attribute__((section(".data")));

 static void store_boot_index_from_rom(void)
 {
 	bootindex = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
 }

 void board_init_f(ulong dummy)
 {
 #if defined(CONFIG_K3_LOAD_SYSFW) || defined(CONFIG_K3_AM654_DDRSS)
 	struct udevice *dev;
 	int ret;
 #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_index_from_rom();

 	/* Make all control module registers accessible */
 	ctrl_mmr_unlock();

 #ifdef CONFIG_CPU_V7R
 	setup_k3_mpu_regions();
 #endif

 	/* Init DM early in-order to invoke system controller */
 	spl_early_init();

 #ifdef CONFIG_K3_LOAD_SYSFW
 	/*
 	 * Process pinctrl for the serial0 a.k.a. WKUP_UART0 module 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 UART will be used by the system
 	 * firmware (SYSFW) image for various purposes and SYSFW depends on us
 	 * to initialize its pin settings.
 	 */
 	ret = uclass_find_device_by_seq(UCLASS_SERIAL, 0, true, &dev);
 	if (!ret)
 		pinctrl_select_state(dev, "default");

 	/*
 	 * Load, start up, and configure 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.
 	 */
 	k3_sysfw_loader(preloader_console_init);
 #else
 	/* Prepare console output */
 	preloader_console_init();
 #endif

 	/* Perform EEPROM-based board detection */
 	do_board_detect();

 #ifdef CONFIG_K3_AM654_DDRSS
 	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
 	if (ret)
 		panic("DRAM init failed: %d\n", ret);
 #endif
 }

 u32 spl_boot_mode(const u32 boot_device)
 {
 #if defined(CONFIG_SUPPORT_EMMC_BOOT)
 	u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);

 	u32 bootmode = (devstat & CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK) >>
 			CTRLMMR_MAIN_DEVSTAT_BOOTMODE_SHIFT;

 	/* eMMC boot0 mode is only supported for primary boot */
 	if (bootindex == K3_PRIMARY_BOOTMODE &&
 	    bootmode == BOOT_DEVICE_MMC1)
 		return MMCSD_MODE_EMMCBOOT;
 #endif

 	/* Everything else use filesystem if available */
 #if defined(CONFIG_SPL_FS_FAT) || defined(CONFIG_SPL_FS_EXT4)
 	return MMCSD_MODE_FS;
 #else
 	return MMCSD_MODE_RAW;
 #endif
 }

 static u32 __get_backup_bootmedia(u32 devstat)
 {
 	u32 bkup_boot = (devstat & CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_MASK) >>
 			CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_SHIFT;

 	switch (bkup_boot) {
 	case BACKUP_BOOT_DEVICE_USB:
 		return BOOT_DEVICE_USB;
 	case BACKUP_BOOT_DEVICE_UART:
 		return BOOT_DEVICE_UART;
 	case BACKUP_BOOT_DEVICE_ETHERNET:
 		return BOOT_DEVICE_ETHERNET;
 	case BACKUP_BOOT_DEVICE_MMC2:
 	{
 		u32 port = (devstat & CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_MASK) >>
 			    CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_SHIFT;
 		if (port == 0x0)
 			return BOOT_DEVICE_MMC1;
 		return BOOT_DEVICE_MMC2;
 	}
 	case BACKUP_BOOT_DEVICE_SPI:
 		return BOOT_DEVICE_SPI;
 	case BACKUP_BOOT_DEVICE_HYPERFLASH:
 		return BOOT_DEVICE_HYPERFLASH;
 	case BACKUP_BOOT_DEVICE_I2C:
 		return BOOT_DEVICE_I2C;
 	};

 	return BOOT_DEVICE_RAM;
 }

 static u32 __get_primary_bootmedia(u32 devstat)
 {
 	u32 bootmode = (devstat & CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK) >>
 			CTRLMMR_MAIN_DEVSTAT_BOOTMODE_SHIFT;

 	if (bootmode == BOOT_DEVICE_OSPI || bootmode ==	BOOT_DEVICE_QSPI)
 		bootmode = BOOT_DEVICE_SPI;

 	if (bootmode == BOOT_DEVICE_MMC2) {
 		u32 port = (devstat & CTRLMMR_MAIN_DEVSTAT_MMC_PORT_MASK) >>
 			    CTRLMMR_MAIN_DEVSTAT_MMC_PORT_SHIFT;
 		if (port == 0x0)
 			bootmode = BOOT_DEVICE_MMC1;
 	} else if (bootmode == BOOT_DEVICE_MMC1) {
 		u32 port = (devstat & CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_MASK) >>
 			    CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_SHIFT;
 		if (port == 0x1)
 			bootmode = BOOT_DEVICE_MMC2;
 	}

 	return bootmode;
 }

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

 	if (bootindex == K3_PRIMARY_BOOTMODE)
 		return __get_primary_bootmedia(devstat);
 	else
 		return __get_backup_bootmedia(devstat);
 }
 #endif

 #ifdef CONFIG_SYS_K3_SPL_ATF

 #define AM6_DEV_MCU_RTI0			134
 #define AM6_DEV_MCU_RTI1			135
 #define AM6_DEV_MCU_ARMSS0_CPU0			159
 #define AM6_DEV_MCU_ARMSS0_CPU1			245

 void release_resources_for_core_shutdown(void)
 {
 	struct ti_sci_handle *ti_sci = get_ti_sci_handle();
 	struct ti_sci_dev_ops *dev_ops = &ti_sci->ops.dev_ops;
 	struct ti_sci_proc_ops *proc_ops = &ti_sci->ops.proc_ops;
 	int ret;
 	u32 i;

 	const u32 put_device_ids[] = {
 		AM6_DEV_MCU_RTI0,
 		AM6_DEV_MCU_RTI1,
 	};

 	/* Iterate through list of devices to put (shutdown) */
 	for (i = 0; i < ARRAY_SIZE(put_device_ids); i++) {
 		u32 id = put_device_ids[i];

 		ret = dev_ops->put_device(ti_sci, id);
 		if (ret)
 			panic("Failed to put device %u (%d)\n", id, ret);
 	}

 	const u32 put_core_ids[] = {
 		AM6_DEV_MCU_ARMSS0_CPU1,
 		AM6_DEV_MCU_ARMSS0_CPU0,	/* Handle CPU0 after CPU1 */
 	};

 	/* Iterate through list of cores to put (shutdown) */
 	for (i = 0; i < ARRAY_SIZE(put_core_ids); i++) {
 		u32 id = put_core_ids[i];

 		/*
 		 * Queue up the core shutdown request. Note that this call
 		 * needs to be followed up by an actual invocation of an WFE
 		 * or WFI CPU instruction.
 		 */
 		ret = proc_ops->proc_shutdown_no_wait(ti_sci, id);
 		if (ret)
 			panic("Failed sending core %u shutdown message (%d)\n",
 			      id, ret);
 	}
 }
 #endif
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* K3: Architecture initialization
	*
	* Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
	* Lokesh Vutla <lokeshvutla@ti.com>
	*/

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

	#ifdef CONFIG_SPL_BUILD
	static void mmr_unlock(u32 base, u32 partition)
	{
	/* Translate the base address */
	phys_addr_t part_base = base + partition * CTRL_MMR0_PARTITION_SIZE;

	/* Unlock the requested partition if locked using two-step sequence */
	writel(CTRLMMR_LOCK_KICK0_UNLOCK_VAL, part_base + CTRLMMR_LOCK_KICK0);
	writel(CTRLMMR_LOCK_KICK1_UNLOCK_VAL, part_base + CTRLMMR_LOCK_KICK1);
	}

	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, 6);
	mmr_unlock(WKUP_CTRL_MMR0_BASE, 7);

	/* 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, 6);

	/* 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, 3);
	mmr_unlock(CTRL_MMR0_BASE, 6);
	mmr_unlock(CTRL_MMR0_BASE, 7);
	}

	/*
	* 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 __attribute__((section(".data")));

	static void store_boot_index_from_rom(void)
	{
	bootindex = (u32 )(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
	}

	void board_init_f(ulong dummy)
	{
	#if defined(CONFIG_K3_LOAD_SYSFW) \|\| defined(CONFIG_K3_AM654_DDRSS)
	struct udevice *dev;
	int ret;
	#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_index_from_rom();

	/* Make all control module registers accessible */
	ctrl_mmr_unlock();

	#ifdef CONFIG_CPU_V7R
	setup_k3_mpu_regions();
	#endif

	/* Init DM early in-order to invoke system controller */
	spl_early_init();

	#ifdef CONFIG_K3_LOAD_SYSFW
	/*
	* Process pinctrl for the serial0 a.k.a. WKUP_UART0 module 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 UART will be used by the system
	* firmware (SYSFW) image for various purposes and SYSFW depends on us
	* to initialize its pin settings.
	*/
	ret = uclass_find_device_by_seq(UCLASS_SERIAL, 0, true, &dev);
	if (!ret)
	pinctrl_select_state(dev, "default");

	/*
	* Load, start up, and configure 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.
	*/
	k3_sysfw_loader(preloader_console_init);
	#else
	/* Prepare console output */
	preloader_console_init();
	#endif

	/* Perform EEPROM-based board detection */
	do_board_detect();

	#ifdef CONFIG_K3_AM654_DDRSS
	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
	if (ret)
	panic("DRAM init failed: %d\n", ret);
	#endif
	}

	u32 spl_boot_mode(const u32 boot_device)
	{
	#if defined(CONFIG_SUPPORT_EMMC_BOOT)
	u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);

	u32 bootmode = (devstat & CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK) >>
	CTRLMMR_MAIN_DEVSTAT_BOOTMODE_SHIFT;

	/* eMMC boot0 mode is only supported for primary boot */
	if (bootindex == K3_PRIMARY_BOOTMODE &&
	bootmode == BOOT_DEVICE_MMC1)
	return MMCSD_MODE_EMMCBOOT;
	#endif

	/* Everything else use filesystem if available */
	#if defined(CONFIG_SPL_FS_FAT) \|\| defined(CONFIG_SPL_FS_EXT4)
	return MMCSD_MODE_FS;
	#else
	return MMCSD_MODE_RAW;
	#endif
	}

	static u32 __get_backup_bootmedia(u32 devstat)
	{
	u32 bkup_boot = (devstat & CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_MASK) >>
	CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_SHIFT;

	switch (bkup_boot) {
	case BACKUP_BOOT_DEVICE_USB:
	return BOOT_DEVICE_USB;
	case BACKUP_BOOT_DEVICE_UART:
	return BOOT_DEVICE_UART;
	case BACKUP_BOOT_DEVICE_ETHERNET:
	return BOOT_DEVICE_ETHERNET;
	case BACKUP_BOOT_DEVICE_MMC2:
	{
	u32 port = (devstat & CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_MASK) >>
	CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_SHIFT;
	if (port == 0x0)
	return BOOT_DEVICE_MMC1;
	return BOOT_DEVICE_MMC2;
	}
	case BACKUP_BOOT_DEVICE_SPI:
	return BOOT_DEVICE_SPI;
	case BACKUP_BOOT_DEVICE_HYPERFLASH:
	return BOOT_DEVICE_HYPERFLASH;
	case BACKUP_BOOT_DEVICE_I2C:
	return BOOT_DEVICE_I2C;
	};

	return BOOT_DEVICE_RAM;
	}

	static u32 __get_primary_bootmedia(u32 devstat)
	{
	u32 bootmode = (devstat & CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK) >>
	CTRLMMR_MAIN_DEVSTAT_BOOTMODE_SHIFT;

	if (bootmode == BOOT_DEVICE_OSPI \|\| bootmode == BOOT_DEVICE_QSPI)
	bootmode = BOOT_DEVICE_SPI;

	if (bootmode == BOOT_DEVICE_MMC2) {
	u32 port = (devstat & CTRLMMR_MAIN_DEVSTAT_MMC_PORT_MASK) >>
	CTRLMMR_MAIN_DEVSTAT_MMC_PORT_SHIFT;
	if (port == 0x0)
	bootmode = BOOT_DEVICE_MMC1;
	} else if (bootmode == BOOT_DEVICE_MMC1) {
	u32 port = (devstat & CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_MASK) >>
	CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_SHIFT;
	if (port == 0x1)
	bootmode = BOOT_DEVICE_MMC2;
	}

	return bootmode;
	}

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

	if (bootindex == K3_PRIMARY_BOOTMODE)
	return __get_primary_bootmedia(devstat);
	else
	return __get_backup_bootmedia(devstat);
	}
	#endif

	#ifdef CONFIG_SYS_K3_SPL_ATF

	#define AM6_DEV_MCU_RTI0 134
	#define AM6_DEV_MCU_RTI1 135
	#define AM6_DEV_MCU_ARMSS0_CPU0 159
	#define AM6_DEV_MCU_ARMSS0_CPU1 245

	void release_resources_for_core_shutdown(void)
	{
	struct ti_sci_handle *ti_sci = get_ti_sci_handle();
	struct ti_sci_dev_ops *dev_ops = &ti_sci->ops.dev_ops;
	struct ti_sci_proc_ops *proc_ops = &ti_sci->ops.proc_ops;
	int ret;
	u32 i;

	const u32 put_device_ids[] = {
	AM6_DEV_MCU_RTI0,
	AM6_DEV_MCU_RTI1,
	};

	/* Iterate through list of devices to put (shutdown) */
	for (i = 0; i < ARRAY_SIZE(put_device_ids); i++) {
	u32 id = put_device_ids[i];

	ret = dev_ops->put_device(ti_sci, id);
	if (ret)
	panic("Failed to put device %u (%d)\n", id, ret);
	}

	const u32 put_core_ids[] = {
	AM6_DEV_MCU_ARMSS0_CPU1,
	AM6_DEV_MCU_ARMSS0_CPU0, /* Handle CPU0 after CPU1 */
	};

	/* Iterate through list of cores to put (shutdown) */
	for (i = 0; i < ARRAY_SIZE(put_core_ids); i++) {
	u32 id = put_core_ids[i];

	/*
	* Queue up the core shutdown request. Note that this call
	* needs to be followed up by an actual invocation of an WFE
	* or WFI CPU instruction.
	*/
	ret = proc_ops->proc_shutdown_no_wait(ti_sci, id);
	if (ret)
	panic("Failed sending core %u shutdown message (%d)\n",
	id, ret);
	}
	}
	#endif