// ================================================================================ //
// The NEORV32 RISC-V Processor - https://github.com/stnolting/neorv32              //
// Copyright (c) NEORV32 contributors.                                              //
// Copyright (c) 2020 - 2025 Stephan Nolting. All rights reserved.                  //
// Licensed under the BSD-3-Clause license, see LICENSE for details.                //
// SPDX-License-Identifier: BSD-3-Clause                                            //
// ================================================================================ //

/**
 * @file config.h
 * @brief Default NEORV32 bootloader configuration.
 */

#ifndef CONFIG_H
#define CONFIG_H

/**********************************************************************
 * Processor memory layout
 **********************************************************************/

// Memory base address for the executable
#ifndef EXE_BASE_ADDR
#define EXE_BASE_ADDR 0x00000000U
#endif

/**********************************************************************
 * UART configuration
 **********************************************************************/

// Set to 0 to disable UART
#ifndef UART_EN
#define UART_EN 1
#endif

// UART BAUD rate for serial
#ifndef UART_BAUD
#define UART_BAUD 19200
#endif

// Set to 1 to enable UART RTS/CTS hardware flow control
#ifndef UART_HW_HANDSHAKE_EN
#define UART_HW_HANDSHAKE_EN 0
#endif

// Print splash screen
#ifndef UART_PRINT_SPLASH_EN
#define UART_PRINT_SPLASH_EN 1
#endif

/**********************************************************************
 * Status LED
 **********************************************************************/

// Set to 0 to disable bootloader status LED at GPIO.gpio_o(STATUS_LED_PIN)
#ifndef STATUS_LED_EN
#define STATUS_LED_EN 1
#endif

// GPIO output pin for high-active bootloader status LED
#ifndef STATUS_LED_PIN
#define STATUS_LED_PIN 0
#endif

/**********************************************************************
 * Auto-boot configuration
 **********************************************************************/

// Enable auto-boot
#ifndef AUTO_BOOT_EN
#define AUTO_BOOT_EN 1
#endif

// Time until the auto-boot sequence starts (in seconds)
#ifndef AUTO_BOOT_TIMEOUT
#define AUTO_BOOT_TIMEOUT 10
#endif

/**********************************************************************
 * SPI configuration
 **********************************************************************/

// Enable SPI (default) including SPI flash boot options
#ifndef SPI_EN
#define SPI_EN 1
#endif

// SPI flash chip select
#ifndef SPI_FLASH_CS
#define SPI_FLASH_CS 0
#endif

// SPI flash clock prescaler, see #NEORV32_CLOCK_PRSC_enum
#ifndef SPI_FLASH_CLK_PRSC
#define SPI_FLASH_CLK_PRSC CLK_PRSC_64
#endif

// SPI flash base address (hast to be aligned to the sector size)
#ifndef SPI_FLASH_BASE_ADDR
#define SPI_FLASH_BASE_ADDR 0x00400000U
#endif

// SPI flash address bytes (1,2,3,4)
#ifndef SPI_FLASH_ADDR_BYTES
#define SPI_FLASH_ADDR_BYTES 3
#endif

// SPI flash sector size in bytes
#ifndef SPI_FLASH_SECTOR_SIZE
#define SPI_FLASH_SECTOR_SIZE 65536
#endif

/**********************************************************************
 * TWI configuration
 **********************************************************************/

// Enable TWI for copying to RAM
#ifndef TWI_EN
#define TWI_EN 0
#endif

// TWI clock prescaler, see #NEORV32_CLOCK_PRSC_enum
#ifndef TWI_CLK_PRSC
#define TWI_CLK_PRSC CLK_PRSC_1024
#endif

// TWI clock divider
#ifndef TWI_CLK_DIV
#define TWI_CLK_DIV 3
#endif

// TWI allow clock stretching
#ifndef TWI_CLK_STRECH_EN
#define TWI_CLK_STRECH_EN 0
#endif

// TWI device ID (write address; R/W cleared)
#ifndef TWI_DEVICE_ID
#define TWI_DEVICE_ID 0xA0
#endif

// TWI flash base address (has to 4-byte aligned)
#ifndef TWI_FLASH_BASE_ADDR
#define TWI_FLASH_BASE_ADDR 0x00000000U
#endif

// TWI flash address bytes (1,2,3,4)
#ifndef TWI_FLASH_ADDR_BYTES
#define TWI_FLASH_ADDR_BYTES 2
#endif

// TWI flash bulk write enable
#ifndef TWI_FLASH_BULK_WRITE_EN
#define TWI_FLASH_BULK_WRITE_EN 0
#endif

#endif // CONFIG_H