--- /dev/null
+// 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 <jtag/jtag.h>
+
+#include "pld.h"
+#include "raw_bit.h"
+
+#define PROGRAM 0x4
+#define ENTERUSER 0x7
+
+#define TRAILING_ZEROS 4000
+#define RUNTEST_START_CYCLES 100
+#define RUNTEST_FINISH_CYCLES 100
+
+struct efinix_pld_device {
+ struct jtag_tap *tap;
+};
+
+static int efinix_read_bit_file(struct raw_bit_file *bit_file, const char *filename)
+{
+ FILE *input_file = fopen(filename, "r");
+ 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 || ((length % 3))) {
+ fclose(input_file);
+ LOG_ERROR("Failed to get length from file %s: %s", filename, strerror(errno));
+ return ERROR_PLD_FILE_LOAD_FAILED;
+ }
+ bit_file->length = DIV_ROUND_UP(length, 3);
+
+ 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;
+ }
+
+ bool end_detected = false;
+ char buffer[3];
+ for (size_t idx = 0; !end_detected && idx < bit_file->length; ++idx) {
+ size_t read_count = fread(buffer, sizeof(char), 3, input_file);
+ end_detected = feof(input_file);
+ if ((read_count == 3 && buffer[2] != '\n') ||
+ (read_count != 3 && !end_detected) ||
+ (read_count != 2 && end_detected)) {
+ fclose(input_file);
+ free(bit_file->data);
+ bit_file->data = NULL;
+ LOG_ERROR("unexpected line length");
+ return ERROR_PLD_FILE_LOAD_FAILED;
+ }
+
+ if (!isxdigit(buffer[0]) || !isxdigit(buffer[1])) {
+ fclose(input_file);
+ free(bit_file->data);
+ bit_file->data = NULL;
+ LOG_ERROR("unexpected char in hex string");
+ return ERROR_PLD_FILE_LOAD_FAILED;
+ }
+ unhexify(&bit_file->data[idx], buffer, 2);
+ }
+
+ fclose(input_file);
+
+ return ERROR_OK;
+}
+
+static int efinix_read_file(struct raw_bit_file *bit_file, const char *filename)
+{
+ if (!filename || !bit_file)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ /* check if binary .bin or ascii .bit/.hex */
+ const char *file_ending_pos = strrchr(filename, '.');
+ if (!file_ending_pos) {
+ LOG_ERROR("Unable to detect filename suffix");
+ return ERROR_PLD_FILE_LOAD_FAILED;
+ }
+
+ if (strcasecmp(file_ending_pos, ".bin") == 0) {
+ return cpld_read_raw_bit_file(bit_file, filename);
+ } else if ((strcasecmp(file_ending_pos, ".bit") == 0) ||
+ (strcasecmp(file_ending_pos, ".hex") == 0)) {
+ return efinix_read_bit_file(bit_file, filename);
+ }
+
+ LOG_ERROR("Unable to detect filetype");
+ return ERROR_PLD_FILE_LOAD_FAILED;
+}
+
+static int efinix_set_instr(struct jtag_tap *tap, uint8_t new_instr)
+{
+ struct scan_field field;
+ field.num_bits = tap->ir_length;
+ void *t = calloc(DIV_ROUND_UP(field.num_bits, 8), 1);
+ if (!t) {
+ LOG_ERROR("Out of memory");
+ return ERROR_FAIL;
+ }
+ field.out_value = t;
+ buf_set_u32(t, 0, field.num_bits, new_instr);
+ field.in_value = NULL;
+ jtag_add_ir_scan(tap, &field, TAP_IDLE);
+ free(t);
+ return ERROR_OK;
+}
+
+static int efinix_load(struct pld_device *pld_device, const char *filename)
+{
+ struct raw_bit_file bit_file;
+ struct scan_field field[2];
+
+ if (!pld_device || !pld_device->driver_priv)
+ return ERROR_FAIL;
+
+ struct efinix_pld_device *efinix_info = pld_device->driver_priv;
+ if (!efinix_info || !efinix_info->tap)
+ return ERROR_FAIL;
+ struct jtag_tap *tap = efinix_info->tap;
+
+ jtag_add_tlr();
+
+ int retval = efinix_set_instr(tap, PROGRAM);
+ if (retval != ERROR_OK)
+ return retval;
+ jtag_add_runtest(RUNTEST_START_CYCLES, TAP_IDLE);
+ retval = efinix_set_instr(tap, PROGRAM); /* fix for T20 */
+ if (retval != ERROR_OK)
+ return retval;
+ retval = jtag_execute_queue();
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = efinix_read_file(&bit_file, filename);
+ if (retval != ERROR_OK)
+ return retval;
+
+ for (size_t i = 0; i < bit_file.length; i++)
+ bit_file.data[i] = flip_u32(bit_file.data[i], 8);
+
+ /* shift in the bitstream */
+ field[0].num_bits = bit_file.length * 8;
+ field[0].out_value = bit_file.data;
+ field[0].in_value = NULL;
+
+ /* followed by zeros */
+ field[1].num_bits = TRAILING_ZEROS;
+ uint8_t *buf = calloc(TRAILING_ZEROS / 8, 1);
+ if (!buf) {
+ free(bit_file.data);
+ LOG_ERROR("Out of memory");
+ return ERROR_FAIL;
+ }
+ field[1].out_value = buf;
+ field[1].in_value = NULL;
+
+ jtag_add_dr_scan(tap, 2, field, TAP_DRPAUSE);
+ retval = jtag_execute_queue();
+ free(bit_file.data);
+ free(buf);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = efinix_set_instr(tap, ENTERUSER);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* entering RUN/TEST for 100 cycles */
+ jtag_add_runtest(RUNTEST_FINISH_CYCLES, TAP_IDLE);
+ retval = jtag_execute_queue();
+
+ return retval;
+}
+
+PLD_DEVICE_COMMAND_HANDLER(efinix_pld_device_command)
+{
+ if (CMD_ARGC != 2)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ struct jtag_tap *tap = jtag_tap_by_string(CMD_ARGV[1]);
+ if (!tap) {
+ command_print(CMD, "Tap: %s does not exist", CMD_ARGV[1]);
+ return ERROR_FAIL;
+ }
+
+ struct efinix_pld_device *efinix_info = malloc(sizeof(struct efinix_pld_device));
+ if (!efinix_info) {
+ LOG_ERROR("Out of memory");
+ return ERROR_FAIL;
+ }
+ efinix_info->tap = tap;
+
+ pld->driver_priv = efinix_info;
+
+ return ERROR_OK;
+}
+
+struct pld_driver efinix_pld = {
+ .name = "efinix",
+ .pld_device_command = &efinix_pld_device_command,
+ .load = &efinix_load,
+};
Code Review / openocd.git / commitdiff