pld: add support for lattice ecp2 and ecp3 devices

Change-Id: I29c227c37be464f7ecc97a30d9cf3da1442e2b7f
Signed-off-by: Daniel Anselmi <danselmi@gmx.ch>
Reviewed-on: https://review.openocd.org/c/openocd/+/7396
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins

1 files changed, 55 insertions, 0 deletions

diff --git a/src/pld/raw_bit.c b/src/pld/raw_bit.c
new file mode 100644
index 0000000..0c3b92e
--- /dev/null
+++ b/src/pld/raw_bit.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/***************************************************************************
+ *   Copyright (C) 2022 by Daniel Anselmi                                  *
+ *   danselmi@gmx.ch                                                       *
+ ***************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "raw_bit.h"
+#include "pld.h"
+
+#include <helper/system.h>
+#include <helper/log.h>
+
+
+int cpld_read_raw_bit_file(struct raw_bit_file *bit_file, const char *filename)
+{
+	FILE *input_file = fopen(filename, "rb");
+
+	if (!input_file) {
+		LOG_ERROR("Couldn't open %s: %s", filename, strerror(errno));
+		return ERROR_PLD_FILE_LOAD_FAILED;
+	}
+
+	fseek(input_file, 0, SEEK_END);
+	long length = ftell(input_file);
+	fseek(input_file, 0, SEEK_SET);
+
+	if (length < 0) {
+		fclose(input_file);
+		LOG_ERROR("Failed to get length of file %s: %s", filename, strerror(errno));
+		return ERROR_PLD_FILE_LOAD_FAILED;
+	}
+	bit_file->length = (size_t)length;
+
+	bit_file->data = malloc(bit_file->length);
+	if (!bit_file->data) {
+		fclose(input_file);
+		LOG_ERROR("Out of memory");
+		return ERROR_PLD_FILE_LOAD_FAILED;
+	}
+
+	size_t read_count = fread(bit_file->data, sizeof(char), bit_file->length, input_file);
+	fclose(input_file);
+	if (read_count != bit_file->length) {
+		free(bit_file->data);
+		bit_file->data = NULL;
+		return ERROR_PLD_FILE_LOAD_FAILED;
+	}
+
+	return ERROR_OK;
+}