101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
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// Copyright 2015-2019 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 "spi_flash_defs.h"
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#include "memspi_host_driver.h"
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#include "string.h"
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#include "esp_log.h"
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#include "cache_utils.h"
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#include "esp_flash_partitions.h"
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static const char TAG[] = "memspi";
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static const spi_flash_host_driver_t esp_flash_default_host = ESP_FLASH_DEFAULT_HOST_DRIVER();
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esp_err_t memspi_host_init_pointers(spi_flash_host_driver_t *host, memspi_host_data_t *data, const memspi_host_config_t *cfg)
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{
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memcpy(host, &esp_flash_default_host, sizeof(spi_flash_host_driver_t));
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esp_err_t err = spi_flash_hal_init(data, cfg);
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if (err != ESP_OK) {
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return err;
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}
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host->driver_data = data;
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//some functions are not required if not SPI1
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if (data->spi != &SPI1) {
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host->flush_cache = NULL;
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host->region_protected = NULL;
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}
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return ESP_OK;
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}
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esp_err_t memspi_host_read_id_hs(spi_flash_host_driver_t *chip_drv, uint32_t *id)
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{
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//NOTE: we do have a read id function, however it doesn't work in high freq
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spi_flash_trans_t t = {
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.command = CMD_RDID,
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.mosi_data = 0,
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.mosi_len = 0,
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.miso_len = 24
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};
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chip_drv->common_command(chip_drv, &t);
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uint32_t raw_flash_id = t.miso_data[0];
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ESP_EARLY_LOGV(TAG, "raw_chip_id: %X\n", raw_flash_id);
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if (raw_flash_id == 0xFFFFFF || raw_flash_id == 0) {
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ESP_EARLY_LOGE(TAG, "no response\n");
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return ESP_ERR_FLASH_NO_RESPONSE;
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}
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// Byte swap the flash id as it's usually written the other way around
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uint8_t mfg_id = raw_flash_id & 0xFF;
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uint16_t flash_id = (raw_flash_id >> 16) | (raw_flash_id & 0xFF00);
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*id = ((uint32_t)mfg_id << 16) | flash_id;
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ESP_EARLY_LOGV(TAG, "chip_id: %X\n", *id);
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return ESP_OK;
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}
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esp_err_t memspi_host_read_status_hs(spi_flash_host_driver_t *driver, uint8_t *out_sr)
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{
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//NOTE: we do have a read id function, however it doesn't work in high freq
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spi_flash_trans_t t = {
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.command = CMD_RDSR,
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.mosi_data = 0,
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.mosi_len = 0,
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.miso_len = 8
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};
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esp_err_t err = driver->common_command(driver, &t);
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if (err != ESP_OK) {
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return err;
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}
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*out_sr = t.miso_data[0];
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return ESP_OK;
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}
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esp_err_t memspi_host_flush_cache(spi_flash_host_driver_t* driver, uint32_t addr, uint32_t size)
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{
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if (((memspi_host_data_t*)(driver->driver_data))->spi == &SPI1) {
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spi_flash_check_and_flush_cache(addr, size);
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}
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return ESP_OK;
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}
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bool memspi_region_protected(spi_flash_host_driver_t* driver, uint32_t addr, uint32_t size)
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{
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if (((memspi_host_data_t*)(driver->driver_data))->spi != &SPI1) {
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return false;
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}
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if (!esp_partition_main_flash_region_safe(addr, size)) {
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return true;
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}
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return false;
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}
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