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esp-idf/components/esp_rom/include/esp32/rom/spi_flash.h

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/*
* SPDX-FileCopyrightText: 2010-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <stdint.h>
#include <stdbool.h>
#include "esp_attr.h"
#include "sdkconfig.h"
#include "esp_rom_spiflash.h"
#ifdef CONFIG_LEGACY_INCLUDE_COMMON_HEADERS
#include "soc/spi_reg.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*************************************************************
* Note
*************************************************************
* 1. ESP32 chip have 4 SPI slave/master, however, SPI0 is
* used as an SPI master to access Flash and ext-SRAM by
* Cache module. It will support Decryto read for Flash,
* read/write for ext-SRAM. And SPI1 is also used as an
* SPI master for Flash read/write and ext-SRAM read/write.
* It will support Encrypto write for Flash.
* 2. As an SPI master, SPI support Highest clock to 80M,
* however, Flash with 80M Clock should be configured
* for different Flash chips. If you want to use 80M
* clock We should use the SPI that is certified by
* Espressif. However, the certification is not started
* at the time, so please use 40M clock at the moment.
* 3. SPI Flash can use 2 lines or 4 lines mode. If you
* use 2 lines mode, you can save two pad SPIHD and
* SPIWP for gpio. ESP32 support configured SPI pad for
* Flash, the configuration is stored in efuse and flash.
* However, the configurations of pads should be certified
* by Espressif. If you use this function, please use 40M
* clock at the moment.
* 4. ESP32 support to use Common SPI command to configure
* Flash to QIO mode, if you failed to configure with fix
* command. With Common SPI Command, ESP32 can also provide
* a way to use same Common SPI command groups on different
* Flash chips.
* 5. This functions are not protected by packeting, Please use the
*************************************************************
*/
#define PERIPHS_SPI_FLASH_CMD SPI_CMD_REG(1)
#define PERIPHS_SPI_FLASH_ADDR SPI_ADDR_REG(1)
#define PERIPHS_SPI_FLASH_CTRL SPI_CTRL_REG(1)
#define PERIPHS_SPI_FLASH_CTRL1 SPI_CTRL1_REG(1)
#define PERIPHS_SPI_FLASH_STATUS SPI_RD_STATUS_REG(1)
#define PERIPHS_SPI_FLASH_USRREG SPI_USER_REG(1)
#define PERIPHS_SPI_FLASH_USRREG1 SPI_USER1_REG(1)
#define PERIPHS_SPI_FLASH_USRREG2 SPI_USER2_REG(1)
#define PERIPHS_SPI_FLASH_C0 SPI_W0_REG(1)
#define PERIPHS_SPI_FLASH_C1 SPI_W1_REG(1)
#define PERIPHS_SPI_FLASH_C2 SPI_W2_REG(1)
#define PERIPHS_SPI_FLASH_C3 SPI_W3_REG(1)
#define PERIPHS_SPI_FLASH_C4 SPI_W4_REG(1)
#define PERIPHS_SPI_FLASH_C5 SPI_W5_REG(1)
#define PERIPHS_SPI_FLASH_C6 SPI_W6_REG(1)
#define PERIPHS_SPI_FLASH_C7 SPI_W7_REG(1)
#define PERIPHS_SPI_FLASH_TX_CRC SPI_TX_CRC_REG(1)
#define SPI0_R_QIO_DUMMY_CYCLELEN 3
#define SPI0_R_QIO_ADDR_BITSLEN 31
#define SPI0_R_FAST_DUMMY_CYCLELEN 7
#define SPI0_R_DIO_DUMMY_CYCLELEN 1
#define SPI0_R_DIO_ADDR_BITSLEN 27
#define SPI0_R_FAST_ADDR_BITSLEN 23
#define SPI0_R_SIO_ADDR_BITSLEN 23
#define SPI1_R_QIO_DUMMY_CYCLELEN 3
#define SPI1_R_QIO_ADDR_BITSLEN 31
#define SPI1_R_FAST_DUMMY_CYCLELEN 7
#define SPI1_R_DIO_DUMMY_CYCLELEN 3
#define SPI1_R_DIO_ADDR_BITSLEN 31
#define SPI1_R_FAST_ADDR_BITSLEN 23
#define SPI1_R_SIO_ADDR_BITSLEN 23
#define ESP_ROM_SPIFLASH_W_SIO_ADDR_BITSLEN 23
#define ESP_ROM_SPIFLASH_TWO_BYTE_STATUS_EN SPI_WRSR_2B
//SPI address register
#define ESP_ROM_SPIFLASH_BYTES_LEN 24
#define ESP_ROM_SPIFLASH_BUFF_BYTE_WRITE_NUM 32
#define ESP_ROM_SPIFLASH_BUFF_BYTE_READ_NUM 64
#define ESP_ROM_SPIFLASH_BUFF_BYTE_READ_BITS 0x3f
//Extra dummy for flash read
#define ESP_ROM_SPIFLASH_DUMMY_LEN_PLUS_20M 0
#define ESP_ROM_SPIFLASH_DUMMY_LEN_PLUS_26M 0
#define ESP_ROM_SPIFLASH_DUMMY_LEN_PLUS_40M 1
#define ESP_ROM_SPIFLASH_DUMMY_LEN_PLUS_80M 2
typedef struct {
uint8_t data_length;
uint8_t read_cmd0;
uint8_t read_cmd1;
uint8_t write_cmd;
uint16_t data_mask;
uint16_t data;
} esp_rom_spiflash_common_cmd_t;
/**
* @brief SPI Flash init, clock divisor is 4, use 1 line Slow read mode.
* Please do not call this function in SDK.
*
* @param uint32_t ishspi: 0 for spi, 1 for hspi, flash pad decided by strapping
* else, bit[5:0] spiclk, bit[11:6] spiq, bit[17:12] spid, bit[23:18] spics0, bit[29:24] spihd
*
* @param uint8_t legacy: always keeping false.
*
* @return None
*/
void esp_rom_spiflash_attach(uint32_t ishspi, bool legacy);
/**
* @brief SPI Read Flash status register. We use CMD 0x05 (RDSR).
* Please do not call this function in SDK.
*
* @param esp_rom_spiflash_chip_t *spi : The information for Flash, which is exported from ld file.
*
* @param uint32_t *status : The pointer to which to return the Flash status value.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : read OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : read error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : read timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_read_status(esp_rom_spiflash_chip_t *spi, uint32_t *status);
/**
* @brief SPI Read Flash status register bits 8-15. We use CMD 0x35 (RDSR2).
* Please do not call this function in SDK.
*
* @param esp_rom_spiflash_chip_t *spi : The information for Flash, which is exported from ld file.
*
* @param uint32_t *status : The pointer to which to return the Flash status value.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : read OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : read error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : read timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_read_statushigh(esp_rom_spiflash_chip_t *spi, uint32_t *status);
/**
* @brief Write status to Flash status register.
* Please do not call this function in SDK.
*
* @param esp_rom_spiflash_chip_t *spi : The information for Flash, which is exported from ld file.
*
* @param uint32_t status_value : Value to .
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : write OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : write error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : write timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_write_status(esp_rom_spiflash_chip_t *spi, uint32_t status_value);
/**
* @brief Use a command to Read Flash status register.
* Please do not call this function in SDK.
*
* @param esp_rom_spiflash_chip_t *spi : The information for Flash, which is exported from ld file.
*
* @param uint32_t*status : The pointer to which to return the Flash status value.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : read OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : read error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : read timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_read_user_cmd(uint32_t *status, uint8_t cmd);
/**
* @brief Config SPI Flash read mode when init.
* Please do not call this function in SDK.
*
* @param esp_rom_spiflash_read_mode_t mode : QIO/QOUT/DIO/DOUT/FastRD/SlowRD.
*
* This function does not try to set the QIO Enable bit in the status register, caller is responsible for this.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : config OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : config error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : config timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_config_readmode(esp_rom_spiflash_read_mode_t mode);
/**
* @brief Config SPI Flash clock divisor.
* Please do not call this function in SDK.
*
* @param uint8_t freqdiv: clock divisor.
*
* @param uint8_t spi: 0 for SPI0, 1 for SPI1.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : config OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : config error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : config timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_config_clk(uint8_t freqdiv, uint8_t spi);
/**
* @brief Clear all SR bits except QE bit.
* Please do not call this function in SDK.
*
* @param None.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : Unlock OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : Unlock error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : Unlock timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_clear_bp(void);
/**
* @brief Clear all SR bits except QE bit.
* Please do not call this function in SDK.
*
* @param None.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : Unlock OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : Unlock error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : Unlock timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_unlock(void);
/**
* @brief SPI flash set BP0 to BP2.(Only valid when WRSR+2Bytes)
* Please do not call this function in SDK.
*
* @param None.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : Lock OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : Lock error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : Lock timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_lock(void);
/**
* @brief Update SPI Flash parameter.
* Please do not call this function in SDK.
*
* @param uint32_t deviceId : Device ID read from SPI, the low 32 bit.
*
* @param uint32_t chip_size : The Flash size.
*
* @param uint32_t block_size : The Flash block size.
*
* @param uint32_t sector_size : The Flash sector size.
*
* @param uint32_t page_size : The Flash page size.
*
* @param uint32_t status_mask : The Mask used when read status from Flash(use single CMD).
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : Update OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : Update error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : Update timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_config_param(uint32_t deviceId, uint32_t chip_size, uint32_t block_size,
uint32_t sector_size, uint32_t page_size, uint32_t status_mask);
/**
* @brief Erase whole flash chip.
* Please do not call this function in SDK.
*
* @param None
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : Erase OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : Erase error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : Erase timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_erase_chip(void);
/**
* @brief Erase a 64KB block of flash
* Uses SPI flash command D8H.
* Please do not call this function in SDK.
*
* @param uint32_t block_num : Which block to erase.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : Erase OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : Erase error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : Erase timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_erase_block(uint32_t block_num);
/**
* @brief Erase a sector of flash.
* Uses SPI flash command 20H.
* Please do not call this function in SDK.
*
* @param uint32_t sector_num : Which sector to erase.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : Erase OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : Erase error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : Erase timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_erase_sector(uint32_t sector_num);
/**
* @brief Erase some sectors.
* Please do not call this function in SDK.
*
* @param uint32_t start_addr : Start addr to erase, should be sector aligned.
*
* @param uint32_t area_len : Length to erase, should be sector aligned.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : Erase OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : Erase error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : Erase timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_erase_area(uint32_t start_addr, uint32_t area_len);
/**
* @brief Write Data to Flash, you should Erase it yourself if need.
* Please do not call this function in SDK.
*
* @param uint32_t dest_addr : Address to write, should be 4 bytes aligned.
*
* @param const uint32_t *src : The pointer to data which is to write.
*
* @param uint32_t len : Length to write, should be 4 bytes aligned.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : Write OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : Write error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : Write timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_write(uint32_t dest_addr, const uint32_t *src, int32_t len);
/**
* @brief Read Data from Flash, you should Erase it yourself if need.
* Please do not call this function in SDK.
*
* @param uint32_t src_addr : Address to read, should be 4 bytes aligned.
*
* @param uint32_t *dest : The buf to read the data.
*
* @param uint32_t len : Length to read, should be 4 bytes aligned.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : Read OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : Read error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : Read timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_read(uint32_t src_addr, uint32_t *dest, int32_t len);
/**
* @brief SPI1 go into encrypto mode.
* Please do not call this function in SDK.
*
* @param None
*
* @return None
*/
void esp_rom_spiflash_write_encrypted_enable(void);
/**
* @brief Prepare 32 Bytes data to encrpto writing, you should Erase it yourself if need.
* Please do not call this function in SDK.
*
* @param uint32_t flash_addr : Address to write, should be 32 bytes aligned.
*
* @param uint32_t *data : The pointer to data which is to write.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : Prepare OK.
* ESP_ROM_SPIFLASH_RESULT_ERR : Prepare error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : Prepare timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_prepare_encrypted_data(uint32_t flash_addr, uint32_t *data);
/**
* @brief SPI1 go out of encrypto mode.
* Please do not call this function in SDK.
*
* @param None
*
* @return None
*/
void esp_rom_spiflash_write_encrypted_disable(void);
/**
* @brief Write data to flash with transparent encryption.
* @note Sectors to be written should already be erased.
*
* @note Please do not call this function in SDK.
*
* @param uint32_t flash_addr : Address to write, should be 32 byte aligned.
*
* @param uint32_t *data : The pointer to data to write. Note, this pointer must
* be 32 bit aligned and the content of the data will be
* modified by the encryption function.
*
* @param uint32_t len : Length to write, should be 32 bytes aligned.
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : Data written successfully.
* ESP_ROM_SPIFLASH_RESULT_ERR : Encryption write error.
* ESP_ROM_SPIFLASH_RESULT_TIMEOUT : Encrypto write timeout.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_write_encrypted(uint32_t flash_addr, uint32_t *data, uint32_t len);
/** @brief Wait until SPI flash write operation is complete
*
* @note Please do not call this function in SDK.
*
* Reads the Write In Progress bit of the SPI flash status register,
* repeats until this bit is zero (indicating write complete).
*
* @return ESP_ROM_SPIFLASH_RESULT_OK : Write is complete
* ESP_ROM_SPIFLASH_RESULT_ERR : Error while reading status.
*/
esp_rom_spiflash_result_t esp_rom_spiflash_wait_idle(esp_rom_spiflash_chip_t *spi);
/** @brief Enable Quad I/O pin functions
*
* @note Please do not call this function in SDK.
*
* Sets the HD & WP pin functions for Quad I/O modes, based on the
* efuse SPI pin configuration.
*
* @param wp_gpio_num - Number of the WP pin to reconfigure for quad I/O.
*
* @param spiconfig - Pin configuration, as returned from ets_efuse_get_spiconfig().
* - If this parameter is 0, default SPI pins are used and wp_gpio_num parameter is ignored.
* - If this parameter is 1, default HSPI pins are used and wp_gpio_num parameter is ignored.
* - For other values, this parameter encodes the HD pin number and also the CLK pin number. CLK pin selection is used
* to determine if HSPI or SPI peripheral will be used (use HSPI if CLK pin is the HSPI clock pin, otherwise use SPI).
* Both HD & WP pins are configured via GPIO matrix to map to the selected peripheral.
*/
void esp_rom_spiflash_select_qio_pins(uint8_t wp_gpio_num, uint32_t spiconfig);
/**
* @brief Clear WEL bit unconditionally.
*
* @return always ESP_ROM_SPIFLASH_RESULT_OK
*/
esp_rom_spiflash_result_t esp_rom_spiflash_write_disable(void);
/**
* @brief Set WREN bit.
*
* @param esp_rom_spiflash_chip_t *spi : The information for Flash, which is exported from ld file.
*
* @return always ESP_ROM_SPIFLASH_RESULT_OK
*/
esp_rom_spiflash_result_t esp_rom_spiflash_write_enable(esp_rom_spiflash_chip_t *spi);
/**
* @brief Fix the bug in SPI hardware communication with Flash/Ext-SRAM in High Speed.
* Please do not call this function in SDK.
*
* @param uint8_t spi: 0 for SPI0(Cache Access), 1 for SPI1(Flash read/write).
*
* @param uint8_t freqdiv: Pll is 80M, 4 for 20M, 3 for 26.7M, 2 for 40M, 1 for 80M.
*
* @return None
*/
void esp_rom_spiflash_fix_dummylen(uint8_t spi, uint8_t freqdiv);
/**
* @brief Select SPI Flash to QIO mode when WP pad is read from Flash.
* Please do not call this function in SDK.
*
* @param uint8_t wp_gpio_num: WP gpio number.
*
* @param uint32_t ishspi: 0 for spi, 1 for hspi, flash pad decided by strapping
* else, bit[5:0] spiclk, bit[11:6] spiq, bit[17:12] spid, bit[23:18] spics0, bit[29:24] spihd
*
* @return None
*/
void esp_rom_spiflash_select_qiomode(uint8_t wp_gpio_num, uint32_t ishspi);
/**
* @brief Set SPI Flash pad drivers.
* Please do not call this function in SDK.
*
* @param uint8_t wp_gpio_num: WP gpio number.
*
* @param uint32_t ishspi: 0 for spi, 1 for hspi, flash pad decided by strapping
* else, bit[5:0] spiclk, bit[11:6] spiq, bit[17:12] spid, bit[23:18] spics0, bit[29:24] spihd
*
* @param uint8_t *drvs: drvs[0]-bit[3:0] for cpiclk, bit[7:4] for spiq, drvs[1]-bit[3:0] for spid, drvs[1]-bit[7:4] for spid
* drvs[2]-bit[3:0] for spihd, drvs[2]-bit[7:4] for spiwp.
* Values usually read from falsh by rom code, function usually callde by rom code.
* if value with bit(3) set, the value is valid, bit[2:0] is the real value.
*
* @return None
*/
void esp_rom_spiflash_set_drvs(uint8_t wp_gpio_num, uint32_t ishspi, uint8_t *drvs);
/**
* @brief Select SPI Flash function for pads.
* Please do not call this function in SDK.
*
* @param uint32_t ishspi: 0 for spi, 1 for hspi, flash pad decided by strapping
* else, bit[5:0] spiclk, bit[11:6] spiq, bit[17:12] spid, bit[23:18] spics0, bit[29:24] spihd
*
* @return None
*/
void esp_rom_spiflash_select_padsfunc(uint32_t ishspi);
/**
* @brief Send CommonCmd to Flash so that is can go into QIO mode, some Flash use different CMD.
* Please do not call this function in SDK.
*
* @param esp_rom_spiflash_common_cmd_t *cmd : A struct to show the action of a command.
*
* @return uint16_t 0 : do not send command any more.
* 1 : go to the next command.
* n > 1 : skip (n - 1) commands.
*/
uint16_t esp_rom_spiflash_common_cmd(esp_rom_spiflash_common_cmd_t *cmd);
#ifdef __cplusplus
}
#endif
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