/* * SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ #include <string.h> #include <sys/param.h> #include "spi_flash_mmap.h" #include "soc/system_reg.h" #include "soc/soc_memory_layout.h" #include "esp32c2/rom/cache.h" #include "hal/spi_flash_hal.h" #include "esp_flash.h" #include "esp_log.h" #include "esp_attr.h" #include "esp_rom_spiflash.h" #include "esp_private/spi_flash_os.h" #define SPICACHE SPIMEM0 #define SPIFLASH SPIMEM1 #define FLASH_WRAP_CMD 0x77 esp_err_t spi_flash_wrap_set(spi_flash_wrap_mode_t mode) { uint32_t reg_bkp_ctrl = SPIFLASH.ctrl.val; uint32_t reg_bkp_usr = SPIFLASH.user.val; SPIFLASH.user.fwrite_dio = 0; SPIFLASH.user.fwrite_dual = 0; SPIFLASH.user.fwrite_qio = 1; SPIFLASH.user.fwrite_quad = 0; SPIFLASH.ctrl.fcmd_dual = 0; SPIFLASH.ctrl.fcmd_quad = 0; SPIFLASH.user.usr_dummy = 0; SPIFLASH.user.usr_addr = 1; SPIFLASH.user.usr_command = 1; SPIFLASH.user2.usr_command_bitlen = 7; SPIFLASH.user2.usr_command_value = FLASH_WRAP_CMD; SPIFLASH.user1.usr_addr_bitlen = 23; SPIFLASH.addr = 0; SPIFLASH.user.usr_miso = 0; SPIFLASH.user.usr_mosi = 1; SPIFLASH.mosi_dlen.usr_mosi_bit_len = 7; SPIFLASH.data_buf[0] = (uint32_t) mode << 4;; SPIFLASH.cmd.usr = 1; while (SPIFLASH.cmd.usr != 0) { } SPIFLASH.ctrl.val = reg_bkp_ctrl; SPIFLASH.user.val = reg_bkp_usr; return ESP_OK; } esp_err_t spi_flash_enable_wrap(uint32_t wrap_size) { switch (wrap_size) { case 8: return spi_flash_wrap_set(FLASH_WRAP_MODE_8B); case 16: return spi_flash_wrap_set(FLASH_WRAP_MODE_16B); case 32: return spi_flash_wrap_set(FLASH_WRAP_MODE_32B); case 64: return spi_flash_wrap_set(FLASH_WRAP_MODE_64B); default: return ESP_FAIL; } } void spi_flash_disable_wrap(void) { spi_flash_wrap_set(FLASH_WRAP_MODE_DISABLE); } bool spi_flash_support_wrap_size(uint32_t wrap_size) { if (!REG_GET_BIT(SPI_MEM_CTRL_REG(0), SPI_MEM_FREAD_QIO) || !REG_GET_BIT(SPI_MEM_CTRL_REG(0), SPI_MEM_FASTRD_MODE)) { return ESP_FAIL; } switch (wrap_size) { case 0: case 8: case 16: case 32: case 64: return true; default: return false; } }