blob: e2919258294ca69bfb8bc1a4729769cb66af2944 [file] [log] [blame] [edit]
/*
* 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_spi_flash.h>
#include <hal/spi_ll.h>
#include <hal/spi_flash_ll.h>
#include <hal/spi_flash_hal.h>
#include <soc/spi_struct.h>
#include <spi_flash_defs.h>
#include <esp_flash_encrypt.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>
#if defined(CONFIG_SOC_ESP32)
#include "soc/dport_reg.h"
#include "esp32/rom/cache.h"
#include "esp32/rom/spi_flash.h"
#include "esp32/spiram.h"
#elif defined(CONFIG_SOC_ESP32S2)
#include "soc/spi_mem_reg.h"
#include "esp32s2/rom/cache.h"
#include "esp32s2/rom/spi_flash.h"
#elif defined(CONFIG_SOC_ESP32S3)
#include "soc/spi_mem_reg.h"
#include "esp32s3/rom/cache.h"
#include "esp32s3/rom/spi_flash.h"
#elif defined(CONFIG_SOC_ESP32C3)
#include "soc/spi_periph.h"
#include "soc/spi_mem_reg.h"
#include "soc/dport_access.h"
#include "esp32c3/dport_access.h"
#include "esp32c3/rom/cache.h"
#include "esp32c3/rom/spi_flash.h"
#endif
#include "soc/mmu.h"
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(flash_esp32, CONFIG_FLASH_LOG_LEVEL);
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, K_FOREVER);
}
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 = spi_flash_read(address, buffer, length);
} else {
ret = spi_flash_read_encrypted(address, buffer, length);
}
flash_esp32_sem_give(dev);
return ret;
}
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 = spi_flash_write(address, buffer, length);
} else {
ret = spi_flash_write_encrypted(address, buffer, length);
}
flash_esp32_sem_give(dev);
return ret;
}
static int flash_esp32_erase(const struct device *dev, off_t start, size_t len)
{
flash_esp32_sem_take(dev);
int ret = spi_flash_erase_range(start, len);
flash_esp32_sem_give(dev);
return ret;
}
#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;
#ifdef CONFIG_MULTITHREADING
k_sem_init(&dev_data->sem, 1, 1);
#endif /* CONFIG_MULTITHREADING */
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);