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drivers: flash: esp32: add flash encryption support

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Add flash encryption function check to redirect
flash write and read calls properly.

Signed-off-by: Sylvio Alves <sylvio.alves@espressif.com>
This commit is contained in:
Sylvio Alves 2021-12-28 15:02:18 -03:00 • committed by Maureen Helm
commit 7022dcfd95
1 changed files with 15 additions and 2 deletions
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17
drivers/flash/flash_esp32.c
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@ -20,6 +20,7 @@
#include <hal/spi_flash_hal.h> #include <hal/spi_flash_hal.h>
#include <soc/spi_struct.h> #include <soc/spi_struct.h>
#include <spi_flash_defs.h> #include <spi_flash_defs.h>
#include <esp_flash_encrypt.h>
#include <kernel.h> #include <kernel.h>
#include <device.h> #include <device.h>
@ -81,8 +82,14 @@ static inline void flash_esp32_sem_give(const struct device *dev)
static int flash_esp32_read(const struct device *dev, off_t address, void *buffer, size_t length) 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); flash_esp32_sem_take(dev);
int ret = spi_flash_read(address, buffer, length); 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); flash_esp32_sem_give(dev);
return ret; return ret;
} }
@ -92,8 +99,14 @@ static int flash_esp32_write(const struct device *dev,
const void *buffer, const void *buffer,
size_t length) size_t length)
{ {
int ret = 0;
flash_esp32_sem_take(dev); flash_esp32_sem_take(dev);
int ret = spi_flash_write(address, buffer, length); 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); flash_esp32_sem_give(dev);
return ret; return ret;
} }