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/*
* stm-fpgacfg.h
* ---------
* Functions and defines for accessing the FPGA config memory and controlling
* the low-level status of the FPGA (reset registers/reboot etc.).
*
* Copyright (c) 2016, NORDUnet A/S All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the NORDUnet nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __STM32_FPGACFG_H
#define __STM32_FPGACFG_H
#include "stm32f4xx_hal.h"
#include "spiflash_n25q128.h"
/* Pins connected to the FPGA config memory (SPI flash) */
#define PROM_FPGA_DIS_Pin GPIO_PIN_14
#define PROM_FPGA_DIS_GPIO_Port GPIOI
#define PROM_ARM_ENA_Pin GPIO_PIN_6
#define PROM_ARM_ENA_GPIO_Port GPIOF
#define PROM_CS_N_Pin GPIO_PIN_12
#define PROM_CS_N_GPIO_Port GPIOB
/* Pins for controlling the FPGA */
#define FPGA_INIT_Port GPIOJ
#define FPGA_INIT_Pin GPIO_PIN_7
#define FPGA_PROGRAM_Port GPIOJ
#define FPGA_PROGRAM_Pin GPIO_PIN_8
/* FPGA status */
#define FPGA_DONE_Port GPIOJ
#define FPGA_DONE_Pin GPIO_PIN_15
#define FPGACFG_GPIO_INIT() \
__GPIOI_CLK_ENABLE(); \
__GPIOF_CLK_ENABLE(); \
__GPIOB_CLK_ENABLE(); \
__GPIOJ_CLK_ENABLE(); \
/* Configure GPIO pins for FPGA access control: PROM_FPGA_DIS, PROM_ARM_ENA */ \
gpio_output(PROM_FPGA_DIS_GPIO_Port, PROM_FPGA_DIS_Pin, GPIO_PIN_RESET); \
gpio_output(PROM_ARM_ENA_GPIO_Port, PROM_ARM_ENA_Pin, GPIO_PIN_RESET); \
/* Configure GPIO pin for FPGA config memory chip select : PROM_CS_N */ \
gpio_output(PROM_CS_N_GPIO_Port, PROM_CS_N_Pin, GPIO_PIN_SET); \
/* Configure GPIO pins FPGA_INIT and FPGA_PROGRAM to reset the FPGA */ \
gpio_output(FPGA_INIT_Port, FPGA_INIT_Pin, GPIO_PIN_RESET); \
gpio_output(FPGA_PROGRAM_Port, FPGA_PROGRAM_Pin, GPIO_PIN_SET); \
/* Configure FPGA_DONE input pin */ \
gpio_input(FPGA_DONE_Port, FPGA_DONE_Pin, GPIO_PULLUP)
enum fpgacfg_access_ctrl {
ALLOW_NONE,
ALLOW_FPGA,
ALLOW_ARM,
};
enum fpgacfg_reset {
RESET_FULL,
RESET_REGISTERS,
};
extern SPI_HandleTypeDef hspi_fpgacfg;
extern int fpgacfg_check_id(void);
extern int fpgacfg_write_data(uint32_t offset, const uint8_t *buf, const uint32_t len);
extern int fpgacfg_erase_sectors(int num);
extern void fpgacfg_access_control(enum fpgacfg_access_ctrl access);
/* Reset the FPGA */
extern void fpgacfg_reset_fpga(enum fpgacfg_reset reset);
/* Check status of FPGA bitstream loading */
extern int fpgacfg_check_done(void);
#endif /* __STM32_FPGACFG_H */
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