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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 | /* * Copyright (c) 2021 Espressif Systems (Shanghai) Co., Ltd. * * SPDX-License-Identifier: Apache-2.0 */ #define DT_DRV_COMPAT espressif_esp32_flash_controller #define SOC_NV_FLASH_NODE DT_INST(0, soc_nv_flash) #define FLASH_WRITE_BLK_SZ DT_PROP(SOC_NV_FLASH_NODE, write_block_size) #define FLASH_ERASE_BLK_SZ DT_PROP(SOC_NV_FLASH_NODE, erase_block_size) /* * HAL includes go first to * avoid BIT macro redefinition */ #include <esp_flash.h> #include <spi_flash_mmap.h> #include <soc/spi_struct.h> #include <esp_flash_encrypt.h> #include <esp_flash_internal.h> #include <zephyr/kernel.h> #include <zephyr/device.h> #include <stddef.h> #include <string.h> #include <errno.h> #include <zephyr/drivers/flash.h> #include <soc.h> #include <zephyr/logging/log.h> LOG_MODULE_REGISTER(flash_esp32, CONFIG_FLASH_LOG_LEVEL); #define FLASH_SEM_TIMEOUT (k_is_in_isr() ? K_NO_WAIT : K_FOREVER) struct flash_esp32_dev_config { spi_dev_t *controller; }; struct flash_esp32_dev_data { #ifdef CONFIG_MULTITHREADING struct k_sem sem; #endif }; static const struct flash_parameters flash_esp32_parameters = { .write_block_size = FLASH_WRITE_BLK_SZ, .erase_value = 0xff, }; #ifdef CONFIG_MULTITHREADING static inline void flash_esp32_sem_take(const struct device *dev) { struct flash_esp32_dev_data *data = dev->data; k_sem_take(&data->sem, FLASH_SEM_TIMEOUT); } static inline void flash_esp32_sem_give(const struct device *dev) { struct flash_esp32_dev_data *data = dev->data; k_sem_give(&data->sem); } #else #define flash_esp32_sem_take(dev) do {} while (0) #define flash_esp32_sem_give(dev) do {} while (0) #endif /* CONFIG_MULTITHREADING */ static int flash_esp32_read(const struct device *dev, off_t address, void *buffer, size_t length) { int ret = 0; flash_esp32_sem_take(dev); if (!esp_flash_encryption_enabled()) { ret = esp_flash_read(NULL, buffer, address, length); } else { ret = esp_flash_read_encrypted(NULL, address, buffer, length); } flash_esp32_sem_give(dev); if (ret != 0) { LOG_ERR("esp_flash_read failed %d", ret); return -EIO; } return 0; } static int flash_esp32_write(const struct device *dev, off_t address, const void *buffer, size_t length) { int ret = 0; flash_esp32_sem_take(dev); if (!esp_flash_encryption_enabled()) { ret = esp_flash_write(NULL, buffer, address, length); } else { ret = esp_flash_write_encrypted(NULL, address, buffer, length); } flash_esp32_sem_give(dev); if (ret != 0) { LOG_ERR("esp_flash_write failed %d", ret); return -EIO; } return 0; } static int flash_esp32_erase(const struct device *dev, off_t start, size_t len) { flash_esp32_sem_take(dev); int ret = esp_flash_erase_region(NULL, start, len); flash_esp32_sem_give(dev); if (ret != 0) { LOG_ERR("esp_flash_erase_region failed %d", ret); return -EIO; } return 0; } #if CONFIG_FLASH_PAGE_LAYOUT static const struct flash_pages_layout flash_esp32_pages_layout = { .pages_count = DT_REG_SIZE(SOC_NV_FLASH_NODE) / FLASH_ERASE_BLK_SZ, .pages_size = DT_PROP(SOC_NV_FLASH_NODE, erase_block_size), }; void flash_esp32_page_layout(const struct device *dev, const struct flash_pages_layout **layout, size_t *layout_size) { *layout = &flash_esp32_pages_layout; *layout_size = 1; } #endif /* CONFIG_FLASH_PAGE_LAYOUT */ static const struct flash_parameters * flash_esp32_get_parameters(const struct device *dev) { ARG_UNUSED(dev); return &flash_esp32_parameters; } static int flash_esp32_init(const struct device *dev) { struct flash_esp32_dev_data *const dev_data = dev->data; uint32_t ret = 0; #ifdef CONFIG_MULTITHREADING k_sem_init(&dev_data->sem, 1, 1); #endif /* CONFIG_MULTITHREADING */ ret = esp_flash_init_default_chip(); if (ret != 0) { LOG_ERR("esp_flash_init_default_chip failed %d", ret); return 0; } return 0; } static const struct flash_driver_api flash_esp32_driver_api = { .read = flash_esp32_read, .write = flash_esp32_write, .erase = flash_esp32_erase, .get_parameters = flash_esp32_get_parameters, #ifdef CONFIG_FLASH_PAGE_LAYOUT .page_layout = flash_esp32_page_layout, #endif }; static struct flash_esp32_dev_data flash_esp32_data; static const struct flash_esp32_dev_config flash_esp32_config = { .controller = (spi_dev_t *) DT_INST_REG_ADDR(0), }; DEVICE_DT_INST_DEFINE(0, flash_esp32_init, NULL, &flash_esp32_data, &flash_esp32_config, POST_KERNEL, CONFIG_FLASH_INIT_PRIORITY, &flash_esp32_driver_api); |