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- // SPDX-License-Identifier: GPL-2.0
- /*
- * AM642: SoC specific initialization
- *
- * Copyright (C) 2020-2021 Texas Instruments Incorporated - https://www.ti.com/
- * Keerthy <j-keerthy@ti.com>
- * Dave Gerlach <d-gerlach@ti.com>
- */
- #include <common.h>
- #include <spl.h>
- #include <asm/io.h>
- #include <asm/arch/hardware.h>
- #include <asm/arch/sysfw-loader.h>
- #include <asm/arch/sys_proto.h>
- #include "common.h"
- #include <asm/arch/sys_proto.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 <dm/root.h>
- #if defined(CONFIG_SPL_BUILD)
- static void ctrl_mmr_unlock(void)
- {
- /* Unlock all PADCFG_MMR1 module registers */
- mmr_unlock(PADCFG_MMR1_BASE, 1);
- /* 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, 6);
- }
- /*
- * 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_ENTENDED_BOOT_DATA_INFO,
- sizeof(struct rom_extended_boot_data));
- }
- #if defined(CONFIG_K3_LOAD_SYSFW) && CONFIG_IS_ENABLED(DM_MMC)
- void k3_mmc_stop_clock(void)
- {
- if (spl_boot_device() == BOOT_DEVICE_MMC1) {
- struct mmc *mmc = find_mmc_device(0);
- if (!mmc)
- return;
- mmc->saved_clock = mmc->clock;
- mmc_set_clock(mmc, 0, true);
- }
- }
- void k3_mmc_restart_clock(void)
- {
- if (spl_boot_device() == BOOT_DEVICE_MMC1) {
- struct mmc *mmc = find_mmc_device(0);
- if (!mmc)
- return;
- mmc_set_clock(mmc, mmc->saved_clock, false);
- }
- }
- #else
- void k3_mmc_stop_clock(void) {}
- void k3_mmc_restart_clock(void) {}
- #endif
- #ifdef CONFIG_SPL_OF_LIST
- void do_dt_magic(void)
- {
- int ret, rescan;
- if (IS_ENABLED(CONFIG_TI_I2C_BOARD_DETECT))
- do_board_detect();
- /*
- * Board detection has been done.
- * Let us see if another dtb wouldn't be a better match
- * for our board
- */
- if (IS_ENABLED(CONFIG_CPU_V7R)) {
- ret = fdtdec_resetup(&rescan);
- if (!ret && rescan) {
- dm_uninit();
- dm_init_and_scan(true);
- }
- }
- }
- #endif
- void board_init_f(ulong dummy)
- {
- #if defined(CONFIG_K3_LOAD_SYSFW)
- struct udevice *dev;
- int ret;
- #endif
- #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();
- preloader_console_init();
- do_dt_magic();
- #if defined(CONFIG_K3_LOAD_SYSFW)
- /*
- * Process pinctrl for serial3 a.k.a. MAIN UART1 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, 3, &dev);
- if (!ret)
- pinctrl_select_state(dev, "default");
- /*
- * Load, start up, and configure system controller firmware.
- * This will determine whether or not ROM has already loaded
- * system firmware and if so, will only perform needed config
- * and not attempt to load firmware again.
- */
- k3_sysfw_loader(is_rom_loaded_sysfw(&bootdata), k3_mmc_stop_clock,
- k3_mmc_restart_clock);
- #endif
- /* Output System Firmware version info */
- k3_sysfw_print_ver();
- #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_boot_mode(const u32 boot_device)
- {
- switch (boot_device) {
- case BOOT_DEVICE_MMC1:
- 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_bootmode =
- (main_devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_MASK) >>
- MAIN_DEVSTAT_BACKUP_BOOTMODE_SHIFT;
- u32 bkup_bootmode_cfg =
- (main_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;
- };
- return BOOT_DEVICE_RAM;
- }
- static u32 __get_primary_bootmedia(u32 main_devstat)
- {
- u32 bootmode = (main_devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
- MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;
- u32 bootmode_cfg =
- (main_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_NOBOOT:
- return BOOT_DEVICE_RAM;
- }
- 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
- #if defined(CONFIG_SYS_K3_SPL_ATF)
- #define AM64X_DEV_RTI8 127
- #define AM64X_DEV_RTI9 128
- #define AM64X_DEV_R5FSS0_CORE0 121
- #define AM64X_DEV_R5FSS0_CORE1 122
- 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[] = {
- AM64X_DEV_RTI9,
- AM64X_DEV_RTI8,
- };
- /* 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[] = {
- AM64X_DEV_R5FSS0_CORE1,
- AM64X_DEV_R5FSS0_CORE0, /* 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
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