add support for ice40 FPGA and iCEBreaker, icestick, iCE40-HX8K, iCE40-HX1K-EVN boards

src/board.hpp

@@ -93,6 +93,11 @@ static std::map <std::string, target_cable_t> board_list = {
 	JTAG_BOARD("ecp5_evn",   "ft2232",     0, 0),
 	SPI_BOARD("fireant", "efinix", "ft232",
 			DBUS4, DBUS5, DBUS3, DBUS0, DBUS1, DBUS2, DBUS6, 0),
+	/* most ice40 boards uses the same pinout */
+	SPI_BOARD("ice40_generic", "lattice", "ft2232",
+			DBUS7, DBUS6,
+			DBUS4, DBUS0, DBUS1, DBUS2,
+			0, 0),
 	JTAG_BOARD("machXO2EVN", "ft2232",     0, 0),
 	JTAG_BOARD("machXO3SK",  "ft2232",     0, 0),
 	JTAG_BOARD("machXO3EVN", "ft2232",     0, 0),

src/ice40.cpp

@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2020 Gwenhael Goavec-Merou <[email protected]>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "ice40.hpp"
+
+#include <string.h>
+#include <unistd.h>
+
+#include <iostream>
+#include <string>
+
+#include "display.hpp"
+#include "ftdispi.hpp"
+#include "device.hpp"
+#include "rawParser.hpp"
+#include "spiFlash.hpp"
+
+Ice40::Ice40(FtdiSpi* spi, const std::string &filename,
+			uint16_t rst_pin, uint16_t done_pin,
+			bool verbose):
+	Device(NULL, filename, verbose), _rst_pin(rst_pin),
+		_done_pin(done_pin)
+{
+	_spi = spi;
+	_spi->gpio_set_input(_done_pin);
+	_spi->gpio_set_output(_rst_pin);
+}
+
+Ice40::~Ice40()
+{}
+
+void Ice40::reset()
+{
+	uint32_t timeout = 1000;
+	_spi->gpio_clear(_rst_pin);
+	usleep(1000);
+	_spi->gpio_set(_rst_pin);
+	printInfo("Reset ", false);
+	do {
+		timeout--;
+		usleep(12000);
+	} while (((_spi->gpio_get(true) & _done_pin) == 0) || timeout > 0);
+	if (timeout == 0)
+		printError("FAIL");
+	else
+		printSuccess("DONE");
+}
+
+void Ice40::program(unsigned int offset)
+{
+	uint32_t timeout = 1000;
+
+	if (_filename == "")
+		return;
+
+	RawParser bit(_filename, false);
+
+	printInfo("Parse file ", false);
+	if (bit.parse() == EXIT_SUCCESS) {
+		printSuccess("DONE");
+	} else {
+		printError("FAIL");
+		return;
+	}
+
+	_spi->gpio_clear(_rst_pin);
+
+	SPIFlash flash(reinterpret_cast<SPIInterface *>(_spi), _verbose);
+    flash.reset();
+    flash.power_up();
+
+    printf("%02x\n", flash.read_status_reg());
+    flash.read_id();
+    flash.erase_and_prog(offset, bit.getData(), bit.getLength() / 8);
+
+    _spi->gpio_set(_rst_pin);
+	usleep(12000);
+
+	printInfo("Wait for CDONE ", false);
+	do {
+		timeout--;
+		usleep(12000);
+	} while (((_spi->gpio_get(true) & _done_pin) == 0) && timeout > 0);
+	if (timeout == 0)
+		printError("FAIL");
+	else
+		printSuccess("DONE");
+}

src/ice40.hpp

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2020 Gwenhael Goavec-Merou <[email protected]>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef SRC_ICE40_HPP_
+#define SRC_ICE40_HPP_
+
+#include <string>
+
+#include "device.hpp"
+#include "ftdispi.hpp"
+
+class Ice40: public Device {
+	public:
+		Ice40(FtdiSpi *spi, const std::string &filename,
+			uint16_t rst_pin, uint16_t done_pin,
+			bool verbose);
+		~Ice40();
+
+		void program(unsigned int offset = 0) override;
+		/* not supported in SPI Active mode */
+		int idCode() override {return 0;}
+		void reset() override;
+
+	private:
+		FtdiSpi *_spi;
+		uint16_t _rst_pin;
+		uint16_t _done_pin;
+};
+
+#endif  // SRC_ICE40_HPP_

src/main.cpp

@@ -33,6 +33,7 @@
 #include "efinix.hpp"
 #include "ftdispi.hpp"
 #include "gowin.hpp"
+#include "ice40.hpp"
 #include "lattice.hpp"
 #include "jtag.hpp"
 #include "part.hpp"
@@ -163,6 +164,10 @@ int main(int argc, char **argv)
 			Efinix target(spi, args.bit_file, board->reset_pin, board->done_pin,
 				args.verbose);
 			target.program(args.offset);
+		} else if (board->manufacturer == "lattice") {
+			Ice40 target(spi, args.bit_file, board->reset_pin, board->done_pin,
+				args.verbose);
+			target.program(args.offset);
 		} else {
 			RawParser *bit = NULL;
 			if (board->reset_pin) {