// SPDX-License-Identifier: GPL-2.0 /* * AM642: SoC specific initialization * * Copyright (C) 2020-2021 Texas Instruments Incorporated - https://www.ti.com/ * Keerthy * Dave Gerlach */ #include #include #include #include #include #include "sysfw-loader.h" #include "common.h" #include #include #include #include #include #include #define CTRLMMR_MCU_RST_CTRL 0x04518170 static void ctrl_mmr_unlock(void) { /* Unlock all PADCFG_MMR1 module registers */ mmr_unlock(PADCFG_MMR1_BASE, 1); /* 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 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); /* Unlock all MCU_PADCFG_MMR1 module registers */ mmr_unlock(MCU_PADCFG_MMR1_BASE, 1); } /* * 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)); } #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; /* Perform board detection */ 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 #if CONFIG_IS_ENABLED(USB_STORAGE) static int fixup_usb_boot(const void *fdt_blob) { int ret = 0; switch (spl_boot_device()) { case BOOT_DEVICE_USB: /* * If the boot mode is host, fixup the dr_mode to host * before cdns3 bind takes place */ ret = fdt_find_and_setprop((void *)fdt_blob, "/bus@f4000/cdns-usb@f900000/usb@f400000", "dr_mode", "host", 5, 0); if (ret) printf("%s: fdt_find_and_setprop() failed:%d\n", __func__, ret); fallthrough; default: break; } return ret; } int fdtdec_board_setup(const void *fdt_blob) { /* Can use the pointer from the function parameters */ return fixup_usb_boot(fdt_blob); } #endif #if defined(CONFIG_ESM_K3) static 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 &= 0xFFFDFFFF; writel(stat, CTRLMMR_MCU_RST_CTRL); } #endif void board_init_f(ulong dummy) { #if defined(CONFIG_K3_LOAD_SYSFW) || defined(CONFIG_K3_AM64_DDRSS) || defined(CONFIG_ESM_K3) 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(); #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(); do_dt_magic(); #if defined(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(); #endif #if defined(CONFIG_K3_AM64_DDRSS) ret = uclass_get_device(UCLASS_RAM, 0, &dev); if (ret) panic("DRAM init failed: %d\n", ret); #endif if (IS_ENABLED(CONFIG_SPL_ETH) && IS_ENABLED(CONFIG_TI_AM65_CPSW_NUSS) && spl_boot_device() == BOOT_DEVICE_ETHERNET) { struct udevice *cpswdev; if (uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(am65_cpsw_nuss), &cpswdev)) printf("Failed to probe am65_cpsw_nuss driver\n"); } } u32 spl_mmc_boot_mode(struct mmc *mmc, 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_DFU: if (bkup_bootmode_cfg & MAIN_DEVSTAT_BACKUP_USB_MODE_MASK) return BOOT_DEVICE_USB; return BOOT_DEVICE_DFU; 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_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); if (bootindex == K3_PRIMARY_BOOTMODE) return __get_primary_bootmedia(devstat); else return __get_backup_bootmedia(devstat); }