1 /* 2 * SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #include "hw_init.h" 8 #include <stdint.h> 9 #include <esp_cpu.h> 10 #include <soc/rtc.h> 11 #include <esp_rom_sys.h> 12 13 #include <bootloader_clock.h> 14 #include <bootloader_flash.h> 15 #include <esp_flash_internal.h> 16 #include <esp_log.h> 17 18 #include <console_init.h> 19 #include <flash_init.h> 20 #include <soc_flash_init.h> 21 #include <soc_init.h> 22 #include <soc_random.h> 23 24 const static char *TAG = "hw_init"; 25 hardware_init(void)26int hardware_init(void) 27 { 28 int err = 0; 29 30 #if XCHAL_ERRATUM_572 31 uint32_t memctl = XCHAL_CACHE_MEMCTL_DEFAULT; 32 33 WSR(MEMCTL, memctl); 34 #endif /*XCHAL_ERRATUM_572*/ 35 36 #ifdef CONFIG_BOOTLOADER_REGION_PROTECTION_ENABLE 37 esp_cpu_configure_region_protection(); 38 #endif 39 #if CONFIG_BOOTLOADER_VDDSDIO_BOOST_1_9V 40 rtc_vddsdio_config_t cfg = rtc_vddsdio_get_config(); 41 42 if (cfg.enable == 1 && cfg.tieh == RTC_VDDSDIO_TIEH_1_8V) { 43 cfg.drefh = 3; 44 cfg.drefm = 3; 45 cfg.drefl = 3; 46 cfg.force = 1; 47 rtc_vddsdio_set_config(cfg); 48 esp_rom_delay_us(10); 49 } 50 #endif /* CONFIG_BOOTLOADER_VDDSDIO_BOOST_1_9V */ 51 52 bootloader_clock_configure(); 53 54 #ifdef CONFIG_ESP_CONSOLE 55 /* initialize console, from now on, we can log */ 56 esp_console_init(); 57 print_banner(); 58 #endif /* CONFIG_ESP_CONSOLE */ 59 60 reset_mmu(); 61 62 flash_update_id(); 63 64 err = bootloader_flash_xmc_startup(); 65 if (err != 0) { 66 ESP_EARLY_LOGE(TAG, "failed when running XMC startup flow, reboot!"); 67 return err; 68 } 69 70 err = read_bootloader_header(); 71 if (err != 0) { 72 return err; 73 } 74 75 err = check_bootloader_validity(); 76 if (err != 0) { 77 return err; 78 } 79 80 err = init_spi_flash(); 81 if (err != 0) { 82 return err; 83 } 84 85 check_wdt_reset(); 86 config_wdt(); 87 88 soc_random_enable(); 89 90 return 0; 91 } 92
