kopia lustrzana https://github.com/espressif/esp-idf
215 wiersze
7.5 KiB
C
215 wiersze
7.5 KiB
C
// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stdlib.h>
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#include <string.h>
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#include <sys/param.h> // For MIN/MAX
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#include "esp_log.h"
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#include "spi_flash_chip_generic.h"
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#include "spi_flash_defs.h"
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#define REGION_32BIT(start, len) ((start) + (len) > (1<<24))
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#define ADDR_32BIT(addr) (addr >= (1<<24))
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static const char TAG[] = "chip_wb";
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/* Driver for Winbond flash chip */
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static esp_err_t spi_flash_command_winbond_program_4B(esp_flash_t *chip, const void *buffer, uint32_t address, uint32_t length);
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static esp_err_t spi_flash_command_winbond_erase_sector_4B(esp_flash_t *chip, uint32_t start_address);
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static esp_err_t spi_flash_command_erase_block_4B(esp_flash_t *chip, uint32_t start_address);
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esp_err_t spi_flash_chip_winbond_probe(esp_flash_t *chip, uint32_t flash_id)
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{
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/* Check manufacturer and product IDs match our desired masks */
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const uint8_t MFG_ID = 0xEF;
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if (flash_id >> 16 != MFG_ID) {
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return ESP_ERR_NOT_FOUND;
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}
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return ESP_OK;
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}
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esp_err_t spi_flash_chip_winbond_read(esp_flash_t *chip, void *buffer, uint32_t address, uint32_t length)
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{
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esp_err_t err = ESP_OK;
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const uint32_t page_size = chip->chip_drv->page_size;
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uint32_t align_address;
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uint8_t temp_buffer[64]; //spiflash hal max length of read no longer than 64byte
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// Configure the host, and return
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err = spi_flash_chip_generic_config_host_io_mode(chip, REGION_32BIT(address, length));
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if (err == ESP_ERR_NOT_SUPPORTED) {
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ESP_LOGE(TAG, "configure host io mode failed - unsupported");
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return err;
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}
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while (err == ESP_OK && length > 0) {
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memset(temp_buffer, 0xFF, sizeof(temp_buffer));
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uint32_t read_len = chip->host->driver->read_data_slicer(chip->host, address, length, &align_address, page_size);
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uint32_t left_off = address - align_address;
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uint32_t data_len = MIN(align_address + read_len, address + length) - address;
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err = chip->host->driver->read(chip->host, temp_buffer, align_address, read_len);
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memcpy(buffer, temp_buffer + left_off, data_len);
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address += data_len;
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buffer = (void *)((intptr_t)buffer + data_len);
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length = length - data_len;
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}
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return err;
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}
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esp_err_t spi_flash_chip_winbond_page_program(esp_flash_t *chip, const void *buffer, uint32_t address, uint32_t length)
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{
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esp_err_t err;
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err = chip->chip_drv->wait_idle(chip, chip->chip_drv->timeout->idle_timeout);
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if (err == ESP_OK) {
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// Perform the actual Page Program command
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err = spi_flash_command_winbond_program_4B(chip, buffer, address, length);
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if (err != ESP_OK) {
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return err;
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}
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err = chip->chip_drv->wait_idle(chip, chip->chip_drv->timeout->page_program_timeout);
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}
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return err;
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}
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esp_err_t spi_flash_chip_winbond_erase_sector(esp_flash_t *chip, uint32_t start_address)
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{
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esp_err_t err = chip->chip_drv->set_chip_write_protect(chip, false);
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if (err == ESP_OK) {
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err = chip->chip_drv->wait_idle(chip, chip->chip_drv->timeout->idle_timeout);
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}
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if (err == ESP_OK) {
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err = spi_flash_command_winbond_erase_sector_4B(chip, start_address);
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if (err != ESP_OK) {
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return err;
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}
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//to save time, flush cache here
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if (chip->host->driver->flush_cache) {
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err = chip->host->driver->flush_cache(chip->host, start_address, chip->chip_drv->sector_size);
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if (err != ESP_OK) {
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return err;
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}
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}
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err = chip->chip_drv->wait_idle(chip, chip->chip_drv->timeout->sector_erase_timeout);
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}
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return err;
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}
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esp_err_t spi_flash_chip_winbond_erase_block(esp_flash_t *chip, uint32_t start_address)
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{
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esp_err_t err = chip->chip_drv->set_chip_write_protect(chip, false);
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if (err == ESP_OK) {
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err = chip->chip_drv->wait_idle(chip, chip->chip_drv->timeout->idle_timeout);
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}
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if (err == ESP_OK) {
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err = spi_flash_command_erase_block_4B(chip, start_address);
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if (err != ESP_OK) {
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return err;
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}
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//to save time, flush cache here
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if (chip->host->driver->flush_cache) {
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err = chip->host->driver->flush_cache(chip->host, start_address, chip->chip_drv->block_erase_size);
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if (err != ESP_OK) {
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return err;
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}
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}
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err = chip->chip_drv->wait_idle(chip, chip->chip_drv->timeout->block_erase_timeout);
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}
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return err;
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}
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static const char chip_name[] = "winbond";
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// The issi chip can use the functions for generic chips except from set read mode and probe,
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// So we only replace these two functions.
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const spi_flash_chip_t esp_flash_chip_winbond = {
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.name = chip_name,
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.timeout = &spi_flash_chip_generic_timeout,
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.probe = spi_flash_chip_winbond_probe,
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.reset = spi_flash_chip_generic_reset,
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.detect_size = spi_flash_chip_generic_detect_size,
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.erase_chip = spi_flash_chip_generic_erase_chip,
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.erase_sector = spi_flash_chip_winbond_erase_sector,
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.erase_block = spi_flash_chip_winbond_erase_block,
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.sector_size = 4 * 1024,
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.block_erase_size = 64 * 1024,
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.get_chip_write_protect = spi_flash_chip_generic_get_write_protect,
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.set_chip_write_protect = spi_flash_chip_generic_set_write_protect,
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.num_protectable_regions = 0,
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.protectable_regions = NULL,
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.get_protected_regions = NULL,
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.set_protected_regions = NULL,
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.read = spi_flash_chip_winbond_read,
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.write = spi_flash_chip_generic_write,
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.program_page = spi_flash_chip_winbond_page_program,
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.page_size = 256,
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.write_encrypted = spi_flash_chip_generic_write_encrypted,
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.wait_idle = spi_flash_chip_generic_wait_idle,
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.set_io_mode = spi_flash_chip_generic_set_io_mode,
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.get_io_mode = spi_flash_chip_generic_get_io_mode,
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.read_reg = spi_flash_chip_generic_read_reg,
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};
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static esp_err_t spi_flash_command_winbond_program_4B(esp_flash_t *chip, const void *buffer, uint32_t address, uint32_t length)
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{
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bool addr_4b = ADDR_32BIT(address);
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spi_flash_trans_t t = {
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.command = (addr_4b? CMD_PROGRAM_PAGE_4B: CMD_PROGRAM_PAGE),
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.address_bitlen = (addr_4b? 32: 24),
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.address = address,
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.mosi_len = length,
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.mosi_data = buffer,
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};
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return chip->host->driver->common_command(chip->host, &t);
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}
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esp_err_t spi_flash_command_winbond_erase_sector_4B(esp_flash_t *chip, uint32_t start_address)
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{
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bool addr_4b = ADDR_32BIT(start_address);
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spi_flash_trans_t t = {
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.command = (addr_4b? CMD_SECTOR_ERASE_4B: CMD_SECTOR_ERASE),
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.address_bitlen = (addr_4b? 32: 24),
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.address = start_address,
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};
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return chip->host->driver->common_command(chip->host, &t);
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}
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esp_err_t spi_flash_command_erase_block_4B(esp_flash_t *chip, uint32_t start_address)
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{
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bool addr_4b = ADDR_32BIT(start_address);
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spi_flash_trans_t t = {
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.command = (addr_4b? CMD_LARGE_BLOCK_ERASE_4B: CMD_LARGE_BLOCK_ERASE),
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.address_bitlen = (addr_4b? 32: 24),
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.address = start_address,
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};
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return chip->host->driver->common_command(chip->host, &t);
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}
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