boot_serial: espressif: ESP32-C3 serial recovery mode
Signed-off-by: Almir Okato <almir.okato@espressif.com>
diff --git a/boot/espressif/port/esp32c3/bootloader.conf b/boot/espressif/port/esp32c3/bootloader.conf
index 45b0577..1abbd1d 100644
--- a/boot/espressif/port/esp32c3/bootloader.conf
+++ b/boot/espressif/port/esp32c3/bootloader.conf
@@ -12,6 +12,41 @@
CONFIG_ESP_SCRATCH_OFFSET=0x210000
CONFIG_ESP_SCRATCH_SIZE=0x40000
+# Enables the MCUboot Serial Recovery, that allows the use of
+# MCUMGR to upload a firmware through the serial port
+# CONFIG_ESP_MCUBOOT_SERIAL=y
+# Use Serial through USB JTAG Serial port for Serial Recovery
+# CONFIG_ESP_MCUBOOT_SERIAL_USB_SERIAL_JTAG=y
+# Use sector erasing (recommended) instead of entire image size
+# erasing when uploading through Serial Recovery
+# CONFIG_ESP_MCUBOOT_ERASE_PROGRESSIVELY=y
+
+# GPIO used to boot on Serial Recovery
+# CONFIG_ESP_SERIAL_BOOT_GPIO_DETECT=5
+# GPIO input type (0 for Pull-down, 1 for Pull-up)
+# CONFIG_ESP_SERIAL_BOOT_GPIO_INPUT_TYPE=0
+# GPIO signal value
+# CONFIG_ESP_SERIAL_BOOT_GPIO_DETECT_VAL=1
+# Delay time for identify the GPIO signal
+# CONFIG_ESP_SERIAL_BOOT_DETECT_DELAY_S=5
+# UART port used for serial communication (not needed when using USB)
+# CONFIG_ESP_SERIAL_BOOT_UART_NUM=1
+# GPIO for Serial RX signal
+# CONFIG_ESP_SERIAL_BOOT_GPIO_RX=8
+# GPIO for Serial TX signal
+# CONFIG_ESP_SERIAL_BOOT_GPIO_TX=9
+
+# Use UART0 for console printing (use either UART or USB alone)
+CONFIG_ESP_CONSOLE_UART=y
+CONFIG_ESP_CONSOLE_UART_NUM=0
+# Configures alternative UART port for console printing
+# (UART_NUM=0 must not be changed)
+# CONFIG_ESP_CONSOLE_UART_CUSTOM=y
+# CONFIG_ESP_CONSOLE_UART_TX_GPIO=9
+# CONFIG_ESP_CONSOLE_UART_RX_GPIO=8
+# Use USB JTAG Serial for console printing
+# CONFIG_ESP_CONSOLE_USB_SERIAL_JTAG=y
+
# CONFIG_ESP_SIGN_EC256=y
# CONFIG_ESP_SIGN_ED25519=n
# CONFIG_ESP_SIGN_RSA=n