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xtensa/esp32s3: Invalidate cache if the flash address used has a cache mapping.

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Signed-off-by: chenwen@espressif.com <chenwen@espressif.com>
This commit is contained in:
chenwen@espressif.com 2023-09-20 14:56:21 +08:00 committed by Xiang Xiao
parent e852f28710
commit e2a82f008a
2 changed files with 509 additions and 356 deletions
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792
arch/xtensa/src/esp32s3/esp32s3_spiflash.c
View File

@ -41,7 +41,9 @@
#include "xtensa.h"
#include "xtensa_attr.h"
#include "hardware/esp32s3_extmem.h"
#include "hardware/esp32s3_spi_mem_reg.h"
#include "hardware/esp32s3_cache_memory.h"
#include "rom/esp32s3_spiflash.h"
#include "rom/esp32s3_opi_flash.h"
#include "esp32s3_irq.h"
@ -54,31 +56,36 @@
/* RO data page in MMU index */
#define DROM0_PAGES_START (2)
#define DROM0_PAGES_END (128)
/* MMU invalid value */
#define INVALID_MMU_VAL (0x100)
/* MMU page size */
#define SPI_FLASH_MMU_PAGE_SIZE (0x10000)
#define DROM0_PAGES_END (512)
/* MMU base virtual mapped address */
#define VADDR0_START_ADDR (0x3c020000)
#define VADDR1_START_ADDR (0x42000000)
/* Flash MMU table for CPU */
#define MMU_TABLE ((volatile uint32_t *)DR_REG_MMU_TABLE)
#define MMU_ADDR2PAGE(_addr) ((_addr) / SPI_FLASH_MMU_PAGE_SIZE)
#define MMU_ADDR2OFF(_addr) ((_addr) % SPI_FLASH_MMU_PAGE_SIZE)
#define MMU_BYTES2PAGES(_n) (((_n) + SPI_FLASH_MMU_PAGE_SIZE - 1) / \
SPI_FLASH_MMU_PAGE_SIZE)
#define MMU_ADDR2PAGE(_addr) ((_addr) / MMU_PAGE_SIZE)
#define MMU_ADDR2OFF(_addr) ((_addr) % MMU_PAGE_SIZE)
#define MMU_BYTES2PAGES(_n) (((_n) + MMU_PAGE_SIZE - 1) / \
MMU_PAGE_SIZE)
#ifdef CONFIG_ESP32S3_SPI_FLASH_DONT_USE_ROM_CODE
#define g_rom_flashchip (rom_spiflash_legacy_data->chip)
#define MMU_ALIGNUP_SIZE(_s) (((_s) + MMU_PAGE_SIZE - 1) \
& ~(MMU_PAGE_SIZE - 1))
#define MMU_ALIGNDOWN_SIZE(_s) ((_s) & ~(MMU_PAGE_SIZE - 1))
/* Flash MMU table for APP CPU */
#define PRO_IRAM0_FIRST_PAGE (0)
#define IROM0_PAGES_END (2)
/* SPI port number */
# define SPI_PORT (1)
@ -170,35 +177,6 @@
#endif /* CONFIG_ESP32S3_SPI_FLASH_DONT_USE_ROM_CODE */
/****************************************************************************
* Private Types
****************************************************************************/
/* SPI Flash map request data */
struct spiflash_map_req_s
{
/* Request mapping SPI Flash base address */
uint32_t src_addr;
/* Request mapping SPI Flash size */
uint32_t size;
/* Mapped memory pointer */
void *ptr;
/* Mapped started MMU page index */
uint32_t start_page;
/* Mapped MMU page count */
uint32_t page_cnt;
};
/****************************************************************************
* Private Functions Declaration
****************************************************************************/
@ -208,6 +186,7 @@ static void spiflash_end(void);
static void spi_flash_disable_cache(uint32_t cpuid);
static void spi_flash_restore_cache(uint32_t cpuid);
#ifdef CONFIG_SMP
static int spi_flash_op_block_task(int argc, char *argv[]);
static int spiflash_init_spi_flash_op_block_task(int cpu);
#endif
@ -220,6 +199,7 @@ extern uint32_t cache_suspend_dcache(void);
extern void cache_resume_icache(uint32_t val);
extern void cache_resume_dcache(uint32_t val);
extern int cache_invalidate_addr(uint32_t addr, uint32_t size);
extern void cache_invalidate_icache_all(void);
/****************************************************************************
* Private Data
@ -371,6 +351,7 @@ static void spiflash_end(void)
DEBUGASSERT(other_cpu != cpu);
#endif
cache_invalidate_icache_all();
spiflash_resume_cache();
/* Signal to spi_flash_op_block_task that flash operation is complete */
@ -645,362 +626,108 @@ static void disable_flash_write(void)
}
while (1);
}
#endif /* CONFIG_ESP32S3_SPI_FLASH_DONT_USE_ROM_CODE */
/****************************************************************************
* Name: esp32s3_mmap
* Name: spiflash_pagecached
*
* Description:
* Mapped SPI Flash address to ESP32-S3's address bus, so that software
* can read SPI Flash data by reading data from memory access.
*
* If SPI Flash hardware encryption is enable, the read from mapped
* address is decrypted.
* Check if the given page is cached.
*
* Input Parameters:
* req - SPI Flash mapping requesting parameters
* phypage - physical address page.
* ptr - Pointer to the virtual address.
*
* Returned Value:
* 0 if success or a negative value if fail.
* True if flash address has corresponding cache mapping, false otherwise.
*
****************************************************************************/
static int esp32s3_mmap(struct spiflash_map_req_s *req)
static bool IRAM_ATTR spiflash_pagecached(uint32_t phypage, uint32_t *ptr)
{
int ret;
int start[2];
int end[2];
int i;
int start_page;
int flash_page;
int page_cnt;
uint32_t mapped_addr;
int j;
spiflash_start();
/* Data ROM start and end pages */
for (start_page = DROM0_PAGES_START;
start_page < DROM0_PAGES_END;
++start_page)
start[0] = DROM0_PAGES_START;
end[0] = DROM0_PAGES_END;
/* Instruction RAM start and end pages */
start[1] = PRO_IRAM0_FIRST_PAGE;
end[1] = IROM0_PAGES_END;
for (i = 0; i < 2; i++)
{
if (MMU_TABLE[start_page] == INVALID_MMU_VAL)
for (j = start[i]; j < end[i]; j++)
{
break;
}
}
flash_page = MMU_ADDR2PAGE(req->src_addr);
page_cnt = MMU_BYTES2PAGES(MMU_ADDR2OFF(req->src_addr) + req->size);
if (start_page + page_cnt < DROM0_PAGES_END)
if (MMU_TABLE[j] == phypage)
{
mapped_addr = (start_page - DROM0_PAGES_START) *
SPI_FLASH_MMU_PAGE_SIZE +
VADDR0_START_ADDR;
for (i = 0; i < page_cnt; i++)
if (i == 0)
{
MMU_TABLE[start_page + i] = flash_page + i;
cache_invalidate_addr(mapped_addr + i * SPI_FLASH_MMU_PAGE_SIZE,
SPI_FLASH_MMU_PAGE_SIZE);
}
/* SPI_FLASH_MMAP_DATA */
req->start_page = start_page;
req->page_cnt = page_cnt;
req->ptr = (void *)(mapped_addr + MMU_ADDR2OFF(req->src_addr));
ret = OK;
*ptr = (VADDR0_START_ADDR +
MMU_PAGE_SIZE * (j - start[0]));
}
else
{
ret = -ENOBUFS;
/* SPI_FLASH_MMAP_INST */
*ptr = (VADDR1_START_ADDR +
MMU_PAGE_SIZE * (j - start[1]));
}
spiflash_end();
return true;
}
}
}
return ret;
return false;
}
/****************************************************************************
* Name: esp32s3_ummap
* Name: spiflash_flushmapped
*
* Description:
* Unmap SPI Flash address in ESP32-S3's address bus, and free resource.
* Writeback PSRAM data and invalidate the cache if the address is mapped.
*
* Input Parameters:
* req - SPI Flash mapping requesting parameters
* start - SPI Flash address.
* size - SPI Flash size.
*
* Returned Value:
* None.
*
****************************************************************************/
static void esp32s3_ummap(const struct spiflash_map_req_s *req)
static void IRAM_ATTR spiflash_flushmapped(size_t start, size_t size)
{
int i;
uint32_t page_start;
uint32_t addr;
uint32_t page;
uint32_t vaddr;
spiflash_start();
page_start = MMU_ALIGNDOWN_SIZE(start);
size += (start - page_start);
size = MMU_ALIGNUP_SIZE(size);
for (i = req->start_page; i < req->start_page + req->page_cnt; ++i)
for (addr = page_start; addr < page_start + size;
addr += MMU_PAGE_SIZE)
{
MMU_TABLE[i] = INVALID_MMU_VAL;
page = addr / MMU_PAGE_SIZE;
if (addr >= g_rom_flashchip.chip_size)
{
return;
}
spiflash_end();
if (spiflash_pagecached(page, &vaddr))
{
cache_invalidate_addr(vaddr, MMU_PAGE_SIZE);
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: spi_flash_read_encrypted
*
* Description:
* Read decrypted data from SPI Flash at designated address when
* enable SPI Flash hardware encryption.
*
* Input Parameters:
* addr - target address
* buffer - data buffer pointer
* size - data number
*
* Returned Value:
* OK if success or a negative value if fail.
*
****************************************************************************/
int spi_flash_read_encrypted(uint32_t addr, void *buffer, uint32_t size)
{
int ret;
struct spiflash_map_req_s req =
{
.src_addr = addr,
.size = size
};
ret = esp32s3_mmap(&req);
if (ret < 0)
{
return ret;
}
memcpy(buffer, req.ptr, size);
esp32s3_ummap(&req);
return OK;
}
/****************************************************************************
* Name: spi_flash_erase_sector
*
* Description:
* Erase the Flash sector.
*
* Parameters:
* sector - Sector number, the count starts at sector 0, 4KB per sector.
*
* Returned Values: esp_err_t
* Zero (OK) is returned or a negative error.
*
****************************************************************************/
#ifdef CONFIG_ESP32S3_SPI_FLASH_DONT_USE_ROM_CODE
int spi_flash_erase_sector(uint32_t sector)
{
int ret = OK;
uint32_t addr = sector * FLASH_SECTOR_SIZE;
spiflash_start();
wait_flash_idle();
enable_flash_write();
ERASE_FLASH_SECTOR(addr);
wait_flash_idle();
disable_flash_write();
spiflash_end();
return ret;
}
/****************************************************************************
* Name: spi_flash_erase_range
*
* Description:
* Erase a range of flash sectors
*
* Parameters:
* start_address - Address where erase operation has to start.
* Must be 4kB-aligned
* size - Size of erased range, in bytes. Must be divisible by
* 4kB.
*
* Returned Values:
* Zero (OK) is returned or a negative error.
*
****************************************************************************/
int spi_flash_erase_range(uint32_t start_address, uint32_t size)
{
int ret = OK;
uint32_t addr = start_address;
spiflash_start();
for (uint32_t i = 0; i < size; i += FLASH_SECTOR_SIZE)
{
wait_flash_idle();
enable_flash_write();
ERASE_FLASH_SECTOR(addr);
addr += FLASH_SECTOR_SIZE;
}
wait_flash_idle();
disable_flash_write();
spiflash_end();
return ret;
}
/****************************************************************************
* Name: spi_flash_write
*
* Description:
* Write data to Flash.
*
* Parameters:
* dest_addr - Destination address in Flash.
* src - Pointer to the source buffer.
* size - Length of data, in bytes.
*
* Returned Values:
* Zero (OK) is returned or a negative error.
*
****************************************************************************/
int spi_flash_write(uint32_t dest_addr, const void *buffer, uint32_t size)
{
int ret = OK;
const uint8_t *tx_buf = (const uint8_t *)buffer;
uint32_t tx_bytes = size;
uint32_t tx_addr = dest_addr;
#ifdef CONFIG_ESP32S3_SPIRAM
bool buffer_in_psram = esp32s3_ptr_extram(buffer);
#endif
spiflash_start();
for (int i = 0; i < size; i += SPI_BUFFER_BYTES)
{
uint32_t spi_buffer[SPI_BUFFER_WORDS];
uint32_t n = MIN(tx_bytes, SPI_BUFFER_BYTES);
#ifdef CONFIG_ESP32S3_SPIRAM
/* Re-enable cache, and then copy data from PSRAM to SRAM */
if (buffer_in_psram)
{
spiflash_resume_cache();
}
#endif
memcpy(spi_buffer, tx_buf, n);
#ifdef CONFIG_ESP32S3_SPIRAM
/* Disable cache, and then write data from SRAM to flash */
if (buffer_in_psram)
{
spiflash_suspend_cache();
}
#endif
wait_flash_idle();
enable_flash_write();
WRITE_DATA_TO_FLASH(tx_addr, spi_buffer, n);
tx_bytes -= n;
tx_buf += n;
tx_addr += n;
}
wait_flash_idle();
disable_flash_write();
spiflash_end();
return ret;
}
/****************************************************************************
* Name: spi_flash_read
*
* Description:
* Read data from Flash.
*
* Parameters:
* src_addr - source address of the data in Flash.
* dest - pointer to the destination buffer
* size - length of data
*
* Returned Values:
* Zero (OK) is returned or a negative error.
*
****************************************************************************/
int spi_flash_read(uint32_t src_addr, void *dest, uint32_t size)
{
int ret = OK;
uint8_t *rx_buf = (uint8_t *)dest;
uint32_t rx_bytes = size;
uint32_t rx_addr = src_addr;
#ifdef CONFIG_ESP32S3_SPIRAM
bool buffer_in_psram = esp32s3_ptr_extram(dest);
#endif
spiflash_start();
for (uint32_t i = 0; i < size; i += SPI_BUFFER_BYTES)
{
uint32_t spi_buffer[SPI_BUFFER_WORDS];
uint32_t n = MIN(rx_bytes, SPI_BUFFER_BYTES);
READ_DATA_FROM_FLASH(rx_addr, spi_buffer, n);
#ifdef CONFIG_ESP32S3_SPIRAM
/* Re-enable cache, and then copy data from SRAM to PSRAM */
if (buffer_in_psram)
{
spiflash_resume_cache();
}
#endif
memcpy(rx_buf, spi_buffer, n);
rx_bytes -= n;
rx_buf += n;
rx_addr += n;
#ifdef CONFIG_ESP32S3_SPIRAM
/* Disable cache, and then read data from flash to SRAM */
if (buffer_in_psram)
{
spiflash_suspend_cache();
}
#endif
}
spiflash_end();
return ret;
}
#endif /* CONFIG_ESP32S3_SPI_FLASH_DONT_USE_ROM_CODE */
@ -1132,7 +859,7 @@ static int spi_flash_op_block_task(int argc, char *argv[])
*
****************************************************************************/
int spiflash_init_spi_flash_op_block_task(int cpu)
static int spiflash_init_spi_flash_op_block_task(int cpu)
{
int pid;
int ret = OK;
@ -1175,6 +902,367 @@ int spiflash_init_spi_flash_op_block_task(int cpu)
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: esp32s3_mmap
*
* Description:
* Mapped SPI Flash address to ESP32-S3's address bus, so that software
* can read SPI Flash data by reading data from memory access.
*
* If SPI Flash hardware encryption is enable, the read from mapped
* address is decrypted.
*
* Input Parameters:
* req - SPI Flash mapping requesting parameters
*
* Returned Value:
* 0 if success or a negative value if fail.
*
****************************************************************************/
int esp32s3_mmap(struct spiflash_map_req_s *req)
{
int ret;
int i;
int start_page;
int flash_page;
int page_cnt;
uint32_t mapped_addr;
spiflash_start();
for (start_page = DROM0_PAGES_START;
start_page < DROM0_PAGES_END;
++start_page)
{
if (MMU_TABLE[start_page] == MMU_INVALID)
{
break;
}
}
flash_page = MMU_ADDR2PAGE(req->src_addr);
page_cnt = MMU_BYTES2PAGES(MMU_ADDR2OFF(req->src_addr) + req->size);
if (start_page + page_cnt < DROM0_PAGES_END)
{
mapped_addr = (start_page - DROM0_PAGES_START) *
MMU_PAGE_SIZE +
VADDR0_START_ADDR;
for (i = 0; i < page_cnt; i++)
{
MMU_TABLE[start_page + i] = flash_page + i;
}
req->start_page = start_page;
req->page_cnt = page_cnt;
req->ptr = (void *)(mapped_addr + MMU_ADDR2OFF(req->src_addr));
ret = OK;
int regval = getreg32(EXTMEM_DCACHE_CTRL1_REG);
regval &= ~EXTMEM_DCACHE_SHUT_CORE0_BUS;
putreg32(regval, EXTMEM_DCACHE_CTRL1_REG);
#if defined(CONFIG_SMP)
regval = getreg32(EXTMEM_DCACHE_CTRL1_REG);
regval &= ~EXTMEM_DCACHE_SHUT_CORE1_BUS;
putreg32(regval, EXTMEM_DCACHE_CTRL1_REG);
#endif
cache_invalidate_addr(mapped_addr, page_cnt * MMU_PAGE_SIZE);
}
else
{
ret = -ENOBUFS;
}
spiflash_end();
return ret;
}
/****************************************************************************
* Name: esp32s3_ummap
*
* Description:
* Unmap SPI Flash address in ESP32-S3's address bus, and free resource.
*
* Input Parameters:
* req - SPI Flash mapping requesting parameters
*
* Returned Value:
* None.
*
****************************************************************************/
void esp32s3_ummap(const struct spiflash_map_req_s *req)
{
int i;
spiflash_start();
for (i = req->start_page; i < req->start_page + req->page_cnt; ++i)
{
MMU_TABLE[i] = MMU_INVALID;
}
spiflash_end();
}
/****************************************************************************
* Name: spi_flash_read_encrypted
*
* Description:
* Read decrypted data from SPI Flash at designated address when
* enable SPI Flash hardware encryption.
*
* Input Parameters:
* addr - target address
* buffer - data buffer pointer
* size - data number
*
* Returned Value:
* OK if success or a negative value if fail.
*
****************************************************************************/
int spi_flash_read_encrypted(uint32_t addr, void *buffer, uint32_t size)
{
int ret;
struct spiflash_map_req_s req =
{
.src_addr = addr,
.size = size
};
ret = esp32s3_mmap(&req);
if (ret < 0)
{
return ret;
}
memcpy(buffer, req.ptr, size);
esp32s3_ummap(&req);
return OK;
}
/****************************************************************************
* Name: spi_flash_erase_sector
*
* Description:
* Erase the Flash sector.
*
* Parameters:
* sector - Sector number, the count starts at sector 0, 4KB per sector.
*
* Returned Values: esp_err_t
* Zero (OK) is returned or a negative error.
*
****************************************************************************/
#ifdef CONFIG_ESP32S3_SPI_FLASH_DONT_USE_ROM_CODE
int spi_flash_erase_sector(uint32_t sector)
{
int ret = OK;
uint32_t addr = sector * FLASH_SECTOR_SIZE;
spiflash_start();
wait_flash_idle();
enable_flash_write();
ERASE_FLASH_SECTOR(addr);
wait_flash_idle();
disable_flash_write();
spiflash_flushmapped(addr, FLASH_SECTOR_SIZE);
spiflash_end();
return ret;
}
/****************************************************************************
* Name: spi_flash_erase_range
*
* Description:
* Erase a range of flash sectors
*
* Parameters:
* start_address - Address where erase operation has to start.
* Must be 4kB-aligned
* size - Size of erased range, in bytes. Must be divisible by
* 4kB.
*
* Returned Values:
* Zero (OK) is returned or a negative error.
*
****************************************************************************/
int spi_flash_erase_range(uint32_t start_address, uint32_t size)
{
int ret = OK;
uint32_t addr = start_address;
spiflash_start();
for (uint32_t i = 0; i < size; i += FLASH_SECTOR_SIZE)
{
wait_flash_idle();
enable_flash_write();
ERASE_FLASH_SECTOR(addr);
addr += FLASH_SECTOR_SIZE;
}
wait_flash_idle();
disable_flash_write();
spiflash_flushmapped(start_address, FLASH_SECTOR_SIZE * size);
spiflash_end();
return ret;
}
/****************************************************************************
* Name: spi_flash_write
*
* Description:
* Write data to Flash.
*
* Parameters:
* dest_addr - Destination address in Flash.
* src - Pointer to the source buffer.
* size - Length of data, in bytes.
*
* Returned Values:
* Zero (OK) is returned or a negative error.
*
****************************************************************************/
int spi_flash_write(uint32_t dest_addr, const void *buffer, uint32_t size)
{
int ret = OK;
const uint8_t *tx_buf = (const uint8_t *)buffer;
uint32_t tx_bytes = size;
uint32_t tx_addr = dest_addr;
#ifdef CONFIG_ESP32S3_SPIRAM
bool buffer_in_psram = esp32s3_ptr_extram(buffer);
#endif
spiflash_start();
for (int i = 0; i < size; i += SPI_BUFFER_BYTES)
{
uint32_t spi_buffer[SPI_BUFFER_WORDS];
uint32_t n = MIN(tx_bytes, SPI_BUFFER_BYTES);
#ifdef CONFIG_ESP32S3_SPIRAM
/* Re-enable cache, and then copy data from PSRAM to SRAM */
if (buffer_in_psram)
{
spiflash_resume_cache();
}
#endif
memcpy(spi_buffer, tx_buf, n);
#ifdef CONFIG_ESP32S3_SPIRAM
/* Disable cache, and then write data from SRAM to flash */
if (buffer_in_psram)
{
spiflash_suspend_cache();
}
#endif
wait_flash_idle();
enable_flash_write();
WRITE_DATA_TO_FLASH(tx_addr, spi_buffer, n);
tx_bytes -= n;
tx_buf += n;
tx_addr += n;
}
wait_flash_idle();
disable_flash_write();
spiflash_flushmapped(dest_addr, size);
spiflash_end();
return ret;
}
/****************************************************************************
* Name: spi_flash_read
*
* Description:
* Read data from Flash.
*
* Parameters:
* src_addr - source address of the data in Flash.
* dest - pointer to the destination buffer
* size - length of data
*
* Returned Values:
* Zero (OK) is returned or a negative error.
*
****************************************************************************/
int spi_flash_read(uint32_t src_addr, void *dest, uint32_t size)
{
int ret = OK;
uint8_t *rx_buf = (uint8_t *)dest;
uint32_t rx_bytes = size;
uint32_t rx_addr = src_addr;
#ifdef CONFIG_ESP32S3_SPIRAM
bool buffer_in_psram = esp32s3_ptr_extram(dest);
#endif
spiflash_start();
for (uint32_t i = 0; i < size; i += SPI_BUFFER_BYTES)
{
uint32_t spi_buffer[SPI_BUFFER_WORDS];
uint32_t n = MIN(rx_bytes, SPI_BUFFER_BYTES);
READ_DATA_FROM_FLASH(rx_addr, spi_buffer, n);
#ifdef CONFIG_ESP32S3_SPIRAM
/* Re-enable cache, and then copy data from SRAM to PSRAM */
if (buffer_in_psram)
{
spiflash_resume_cache();
}
#endif
memcpy(rx_buf, spi_buffer, n);
rx_bytes -= n;
rx_buf += n;
rx_addr += n;
#ifdef CONFIG_ESP32S3_SPIRAM
/* Disable cache, and then read data from flash to SRAM */
if (buffer_in_psram)
{
spiflash_suspend_cache();
}
#endif
}
spiflash_end();
return ret;
}
#endif /* CONFIG_ESP32S3_SPI_FLASH_DONT_USE_ROM_CODE */
/****************************************************************************
* Name: esp32s3_spiflash_init
*

65
arch/xtensa/src/esp32s3/esp32s3_spiflash.h
View File

@ -42,10 +42,75 @@ extern "C"
#define EXTERN extern
#endif
/****************************************************************************
* Public Types
****************************************************************************/
/* SPI Flash map request data */
struct spiflash_map_req_s
{
/* Request mapping SPI Flash base address */
uint32_t src_addr;
/* Request mapping SPI Flash size */
uint32_t size;
/* Mapped memory pointer */
void *ptr;
/* Mapped started MMU page index */
uint32_t start_page;
/* Mapped MMU page count */
uint32_t page_cnt;
};
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: esp32s3_mmap
*
* Description:
* Mapped SPI Flash address to ESP32-S3's address bus, so that software
* can read SPI Flash data by reading data from memory access.
*
* If SPI Flash hardware encryption is enable, the read from mapped
* address is decrypted.
*
* Input Parameters:
* req - SPI Flash mapping requesting parameters
*
* Returned Value:
* 0 if success or a negative value if fail.
*
****************************************************************************/
int esp32s3_mmap(struct spiflash_map_req_s *req);
/****************************************************************************
* Name: esp32s3_ummap
*
* Description:
* Unmap SPI Flash address in ESP32-S3's address bus, and free resource.
*
* Input Parameters:
* req - SPI Flash mapping requesting parameters
*
* Returned Value:
* None.
*
****************************************************************************/
void esp32s3_ummap(const struct spiflash_map_req_s *req);
/****************************************************************************
* Name: spi_flash_read_encrypted
*