arch/arm/mach-k3/j784s4/j784s4_init.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * J784S4: SoC specific initialization
 *
 * Copyright (C) 2023-2024 Texas Instruments Incorporated - https://www.ti.com/
 *	Hari Nagalla <hnagalla@ti.com>
 */

#include <init.h>
#include <spl.h>
#include <asm/io.h>
#include <asm/armv7_mpu.h>
#include <asm/arch/hardware.h>
#include <linux/soc/ti/ti_sci_protocol.h>
#include <dm.h>
#include <dm/uclass-internal.h>
#include <dm/pinctrl.h>
#include <mmc.h>
#include <remoteproc.h>

#include "../sysfw-loader.h"
#include "../common.h"

#define J784S4_MAX_DDR_CONTROLLERS	4

struct fwl_data infra_cbass0_fwls[] = {
	{ "PSC0", 5, 1 },
	{ "PLL_CTRL0", 6, 1 },
	{ "PLL_MMR0", 8, 26 },
	{ "CTRL_MMR0", 9, 16 },
	{ "GPIO0", 16, 1 },
}, wkup_cbass0_fwls[] = {
	{ "WKUP_PSC0", 129, 1 },
	{ "WKUP_PLL_CTRL0", 130, 1 },
	{ "WKUP_CTRL_MMR0", 131, 16 },
	{ "WKUP_GPIO0", 132, 1 },
	{ "WKUP_I2C0", 144, 1 },
	{ "WKUP_USART0", 160, 1 },
}, mcu_cbass0_fwls[] = {
	{ "MCU_R5FSS0_CORE0", 1024, 4 },
	{ "MCU_R5FSS0_CORE0_CFG", 1025, 3 },
	{ "MCU_R5FSS0_CORE1", 1028, 4 },
	{ "MCU_R5FSS0_CORE1_CFG", 1029, 1 },
	{ "MCU_FSS0_CFG", 1032, 12 },
	{ "MCU_FSS0_S1", 1033, 8 },
	{ "MCU_FSS0_S0", 1036, 8 },
	{ "MCU_PSROM49152X32", 1048, 1 },
	{ "MCU_MSRAM128KX64", 1050, 8 },
	{ "MCU_MSRAM128KX64_CFG", 1051, 1 },
	{ "MCU_TIMER0", 1056, 1 },
	{ "MCU_TIMER9", 1065, 1 },
	{ "MCU_USART0", 1120, 1 },
	{ "MCU_I2C0", 1152, 1 },
	{ "MCU_CTRL_MMR0", 1200, 8 },
	{ "MCU_PLL_MMR0", 1201, 3 },
	{ "MCU_CPSW0", 1220, 2 },
}, cbass_rc_cfg0_fwls[] = {
	{ "EMMCSD4SS0_CFG", 2400, 4 },
}, cbass_hc2_fwls[] = {
	{ "PCIE0", 2547, 24 },
}, cbass_hc_cfg0_fwls[] = {
	{ "PCIE0_CFG", 2577, 7 },
	{ "EMMC8SS0_CFG", 2579, 4 },
	{ "USB3SS0_CORE", 2580, 4 },
	{ "USB3SS1_CORE", 2581, 1 },
}, navss_cbass0_fwls[] = {
	{ "NACSS_VIRT0", 6253, 1 },
};

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, 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, 3);
	mmr_unlock(MCU_CTRL_MMR0_BASE, 4);

	/* 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, 5);
	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 __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));
}

void k3_spl_init(void)
{
	struct udevice *dev;
	int ret;

	/*
	 * 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();

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

	if (IS_ENABLED(CONFIG_CPU_V7R)) {
		disable_linefill_optimization();
		setup_k3_mpu_regions();
	}

	/* Init DM early */
	ret = spl_early_init();

	/* Prepare console output */
	preloader_console_init();

	if (IS_ENABLED(CONFIG_CPU_V7R)) {
		/*
		 * 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 (TIFS) image for various purposes and TIFS depends on us
		 * to initialize its pin settings.
		 */
		ret = uclass_find_device_by_seq(UCLASS_SERIAL, 0, &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 TIFS post-PM configuration
		 * callback hook, effectively switching on (or over) the console
		 * output.
		 */
		k3_sysfw_loader(is_rom_loaded_sysfw(&bootdata), NULL, NULL);

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

		remove_fwl_configs(cbass_hc_cfg0_fwls, ARRAY_SIZE(cbass_hc_cfg0_fwls));
		remove_fwl_configs(cbass_hc2_fwls, ARRAY_SIZE(cbass_hc2_fwls));
		remove_fwl_configs(cbass_rc_cfg0_fwls, ARRAY_SIZE(cbass_rc_cfg0_fwls));
		remove_fwl_configs(infra_cbass0_fwls, ARRAY_SIZE(infra_cbass0_fwls));
		remove_fwl_configs(mcu_cbass0_fwls, ARRAY_SIZE(mcu_cbass0_fwls));
		remove_fwl_configs(wkup_cbass0_fwls, ARRAY_SIZE(wkup_cbass0_fwls));
		remove_fwl_configs(navss_cbass0_fwls, ARRAY_SIZE(navss_cbass0_fwls));
	}

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

void k3_mem_init(void)
{
	struct udevice *dev;
	int ret, ctrl = 0;

	if (IS_ENABLED(CONFIG_K3_J721E_DDRSS)) {
		ret = uclass_get_device(UCLASS_RAM, 0, &dev);
		if (ret)
			panic("DRAM 0 init failed: %d\n", ret);
		ctrl++;

		while (ctrl < J784S4_MAX_DDR_CONTROLLERS) {
			ret = uclass_next_device_err(&dev);
			if (ret == -ENODEV)
				break;

			if (ret)
				panic("DRAM %d init failed: %d\n", ctrl, ret);
			ctrl++;
		}
		printf("Initialized %d DRAM controllers\n", ctrl);
	}

	spl_enable_cache();
}

void board_init_f(ulong dummy)
{
	k3_spl_init();
	k3_mem_init();
}

u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device)
{
	switch (boot_device) {
	case BOOT_DEVICE_MMC1:
		if (IS_ENABLED(CONFIG_SUPPORT_EMMC_BOOT))
			return MMCSD_MODE_EMMCBOOT;
		if (IS_ENABLED(CONFIG_SPL_FS_FAT) || IS_ENABLED(CONFIG_SPL_FS_EXT4))
			return MMCSD_MODE_FS;
		return MMCSD_MODE_EMMCBOOT;
	case BOOT_DEVICE_MMC2:
		return MMCSD_MODE_FS;
	default:
		return MMCSD_MODE_RAW;
	}
}

static u32 __get_backup_bootmedia(u32 main_devstat)
{
	u32 bkup_boot = (main_devstat & MAIN_DEVSTAT_BKUP_BOOTMODE_MASK) >>
			MAIN_DEVSTAT_BKUP_BOOTMODE_SHIFT;

	switch (bkup_boot) {
	case BACKUP_BOOT_DEVICE_USB:
		return BOOT_DEVICE_DFU;
	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 = (main_devstat & MAIN_DEVSTAT_BKUP_MMC_PORT_MASK) >>
			    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_I2C:
		return BOOT_DEVICE_I2C;
	}

	return BOOT_DEVICE_RAM;
}

static u32 __get_primary_bootmedia(u32 main_devstat, u32 wkup_devstat)
{
	u32 bootmode = (wkup_devstat & WKUP_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
			WKUP_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;

	bootmode |= (main_devstat & MAIN_DEVSTAT_BOOT_MODE_B_MASK) <<
			BOOT_MODE_B_SHIFT;

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

	if (bootmode == BOOT_DEVICE_MMC2) {
		u32 port = (main_devstat &
			    MAIN_DEVSTAT_PRIM_BOOTMODE_MMC_PORT_MASK) >>
			   MAIN_DEVSTAT_PRIM_BOOTMODE_PORT_SHIFT;
		if (port == 0x0)
			bootmode = BOOT_DEVICE_MMC1;
	}

	return bootmode;
}

u32 spl_spi_boot_bus(void)
{
	u32 wkup_devstat = readl(CTRLMMR_WKUP_DEVSTAT);
	u32 main_devstat = readl(CTRLMMR_MAIN_DEVSTAT);
	u32 bootmode = ((wkup_devstat & WKUP_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
				WKUP_DEVSTAT_PRIMARY_BOOTMODE_SHIFT) |
			((main_devstat & MAIN_DEVSTAT_BOOT_MODE_B_MASK) << BOOT_MODE_B_SHIFT);

	return (bootmode == BOOT_DEVICE_QSPI) ? 1 : 0;
}

u32 spl_boot_device(void)
{
	u32 wkup_devstat = readl(CTRLMMR_WKUP_DEVSTAT);
	u32 main_devstat;

	if (wkup_devstat & WKUP_DEVSTAT_MCU_ONLY_MASK) {
		printf("ERROR: MCU only boot is not yet supported\n");
		return BOOT_DEVICE_RAM;
	}

	/* MAIN CTRL MMR can only be read if MCU ONLY is 0 */
	main_devstat = readl(CTRLMMR_MAIN_DEVSTAT);

	if (bootindex == K3_PRIMARY_BOOTMODE)
		return __get_primary_bootmedia(main_devstat, wkup_devstat);
	else
		return __get_backup_bootmedia(main_devstat);
}