Initial

1 files changed, 426 insertions, 0 deletions

diff --git a/src/rtl_eeprom.c b/src/rtl_eeprom.c
new file mode 100644
index 0000000..24be900
--- /dev/null
+++ b/src/rtl_eeprom.c
@@ -0,0 +1,426 @@
+/*
+ * rtl-sdr, turns your Realtek RTL2832 based DVB dongle into a SDR receiver
+ * rtl_eeprom, EEPROM modification tool
+ * Copyright (C) 2012 by Steve Markgraf <steve@steve-m.de>
+ *
+ * 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 2 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifndef _WIN32
+#include <unistd.h>
+#else
+#include <windows.h>
+#include "getopt/getopt.h"
+#endif
+
+#include "rtl-sdr.h"
+
+#define EEPROM_SIZE	256
+#define MAX_STR_SIZE	256
+#define STR_OFFSET	0x09
+
+static rtlsdr_dev_t *dev = NULL;
+
+typedef struct rtlsdr_config {
+	uint16_t vendor_id;
+	uint16_t product_id;
+	char manufacturer[MAX_STR_SIZE];
+	char product[MAX_STR_SIZE];
+	char serial[MAX_STR_SIZE];
+	int have_serial;
+	int enable_ir;
+	int remote_wakeup;
+} rtlsdr_config_t;
+
+void dump_config(rtlsdr_config_t *conf)
+{
+	fprintf(stderr, "__________________________________________\n");
+	fprintf(stderr, "Vendor ID:\t\t0x%04x\n", conf->vendor_id);
+	fprintf(stderr, "Product ID:\t\t0x%04x\n", conf->product_id);
+	fprintf(stderr, "Manufacturer:\t\t%s\n", conf->manufacturer);
+	fprintf(stderr, "Product:\t\t%s\n", conf->product);
+	fprintf(stderr, "Serial number:\t\t%s\n", conf->serial);
+	fprintf(stderr, "Serial number enabled:\t");
+	fprintf(stderr, conf->have_serial ? "yes\n": "no\n");
+	fprintf(stderr, "IR endpoint enabled:\t");
+	fprintf(stderr, conf->enable_ir ? "yes\n": "no\n");
+	fprintf(stderr, "Remote wakeup enabled:\t");
+	fprintf(stderr, conf->remote_wakeup ? "yes\n": "no\n");
+	fprintf(stderr, "__________________________________________\n");
+}
+
+void usage(void)
+{
+	fprintf(stderr,
+		"rtl_eeprom, an EEPROM programming tool for "
+		"RTL2832 based DVB-T receivers\n\n"
+		"Usage:\n"
+		"\t[-d device_index (default: 0)]\n"
+		"\t[-m <str> set manufacturer string]\n"
+		"\t[-p <str> set product string]\n"
+		"\t[-s <str> set serial number string]\n"
+		"\t[-i <0,1> disable/enable IR-endpoint]\n"
+		"\t[-g <conf> generate default config and write to device]\n"
+		"\t[   <conf> can be one of:]\n"
+		"\t[   realtek\t\tRealtek default (as without EEPROM)]\n"
+		"\t[   realtek_oem\t\tRealtek default OEM with EEPROM]\n"
+		"\t[   noxon\t\tTerratec NOXON DAB Stick]\n"
+		"\t[   terratec_black\tTerratec T Stick Black]\n"
+		"\t[   terratec_plus\tTerratec T Stick+ (DVB-T/DAB)]\n"
+		"\t[-w <filename> write dumped file to device]\n"
+		"\t[-r <filename> dump EEPROM to file]\n"
+		"\t[-h display this help text]\n"
+		"\nUse on your own risk, especially -w!\n");
+	exit(1);
+}
+
+int get_string_descriptor(int pos, uint8_t *data, char *str)
+{
+	int len, i, j = 0;
+
+	len = data[pos];
+
+	if (data[pos + 1] != 0x03)
+		fprintf(stderr, "Error: invalid string descriptor!\n");
+
+	for (i = 2; i < len; i += 2)
+		str[j++] = data[pos + i];
+
+	str[j] = 0x00;
+
+	return pos + i;
+}
+
+int set_string_descriptor(int pos, uint8_t *data, char *str)
+{
+	int i = 0, j = 2;
+
+	if (pos < 0)
+		return -1;
+
+	data[pos + 1] = 0x03;
+
+	while (str[i] != 0x00) {
+		if ((pos + j) >= 78) {
+			fprintf(stderr, "Error: string too long, truncated!\n");
+			return -1;
+		}
+		data[pos + j++] = str[i++];
+		data[pos + j++] = 0x00;
+	}
+
+	data[pos] = j;
+
+	return pos + j;
+}
+
+int parse_eeprom_to_conf(rtlsdr_config_t *conf, uint8_t *dat)
+{
+	int pos;
+
+	if ((dat[0] != 0x28) || (dat[1] != 0x32))
+		fprintf(stderr, "Error: invalid RTL2832 EEPROM header!\n");
+
+	conf->vendor_id = dat[2] | (dat[3] << 8);
+	conf->product_id = dat[4] | (dat[5] << 8);
+	conf->have_serial = (dat[6] == 0xa5) ? 1 : 0;
+	conf->remote_wakeup = (dat[7] & 0x01) ? 1 : 0;
+	conf->enable_ir = (dat[7] & 0x02) ? 1 : 0;
+
+	pos = get_string_descriptor(STR_OFFSET, dat, conf->manufacturer);
+	pos = get_string_descriptor(pos, dat, conf->product);
+	get_string_descriptor(pos, dat, conf->serial);
+
+	return 0;
+}
+
+int gen_eeprom_from_conf(rtlsdr_config_t *conf, uint8_t *dat)
+{
+	int pos;
+
+	dat[0] = 0x28;
+	dat[1] = 0x32;
+	dat[2] = conf->vendor_id & 0xff;
+	dat[3] = (conf->vendor_id >> 8) & 0xff ;
+	dat[4] = conf->product_id & 0xff;
+	dat[5] = (conf->product_id >> 8) & 0xff;
+	dat[6] = conf->have_serial ? 0xa5 : 0x00;
+	dat[7] = 0x14;
+	dat[7] |= conf->remote_wakeup ? 0x01 : 0x00;
+	dat[7] |= conf->enable_ir ? 0x02 : 0x00;
+	dat[8] = 0x02;
+
+	pos = set_string_descriptor(STR_OFFSET, dat, conf->manufacturer);
+	pos = set_string_descriptor(pos, dat, conf->product);
+	pos = set_string_descriptor(pos, dat, conf->serial);
+
+	dat[78] = 0x00;		/* length of IR config */
+
+	return pos;
+}
+
+enum configs {
+	CONF_NONE = 0,
+	REALTEK,
+	REALTEK_EEPROM,
+	TERRATEC_NOXON,
+	TERRATEC_T_BLACK,
+	TERRATEC_T_PLUS,
+};
+
+void gen_default_conf(rtlsdr_config_t *conf, int config)
+{
+	switch (config) {
+	case REALTEK:
+		fprintf(stderr, "Realtek default (as without EEPROM)\n");
+		conf->vendor_id = 0x0bda;
+		conf->product_id = 0x2832;
+		strcpy(conf->manufacturer, "Generic");
+		strcpy(conf->product, "RTL2832U DVB-T");
+		strcpy(conf->serial, "0");
+		conf->have_serial = 1;
+		conf->enable_ir = 0;
+		conf->remote_wakeup = 1;
+		break;
+	case REALTEK_EEPROM:
+		fprintf(stderr, "Realtek default OEM with EEPROM\n");
+		conf->vendor_id = 0x0bda;
+		conf->product_id = 0x2838;
+		strcpy(conf->manufacturer, "Realtek");
+		strcpy(conf->product, "RTL2838UHIDIR");
+		strcpy(conf->serial, "00000001");
+		conf->have_serial = 1;
+		conf->enable_ir = 1;
+		conf->remote_wakeup = 0;
+		break;
+	case TERRATEC_NOXON:
+		fprintf(stderr, "Terratec NOXON DAB Stick\n");
+		conf->vendor_id = 0x0ccd;
+		conf->product_id = 0x00b3;
+		strcpy(conf->manufacturer, "NOXON");
+		strcpy(conf->product, "DAB Stick");
+		strcpy(conf->serial, "0");
+		conf->have_serial = 1;
+		conf->enable_ir = 0;
+		conf->remote_wakeup = 1;
+		break;
+	case TERRATEC_T_BLACK:
+		fprintf(stderr, "Terratec T Stick Black\n");
+		conf->vendor_id = 0x0ccd;
+		conf->product_id = 0x00a9;
+		strcpy(conf->manufacturer, "Realtek");
+		strcpy(conf->product, "RTL2838UHIDIR");
+		strcpy(conf->serial, "00000001");
+		conf->have_serial = 1;
+		conf->enable_ir = 1;
+		conf->remote_wakeup = 0;
+		break;
+	case TERRATEC_T_PLUS:
+		fprintf(stderr, "Terratec ran T Stick+\n");
+		conf->vendor_id = 0x0ccd;
+		conf->product_id = 0x00d7;
+		strcpy(conf->manufacturer, "Realtek");
+		strcpy(conf->product, "RTL2838UHIDIR");
+		strcpy(conf->serial, "00000001");
+		conf->have_serial = 1;
+		conf->enable_ir = 1;
+		conf->remote_wakeup = 0;
+		break;
+	default:
+		break;
+	};
+}
+
+int main(int argc, char **argv)
+{
+	int i, r, opt;
+	uint32_t dev_index = 0;
+	int device_count;
+	char *filename = NULL;
+	FILE *file = NULL;
+	char *manuf_str = NULL;
+	char *product_str = NULL;
+	char *serial_str = NULL;
+	uint8_t buf[EEPROM_SIZE];
+	rtlsdr_config_t conf;
+	int flash_file = 0;
+	int default_config = 0;
+	int change = 0;
+	int ir_endpoint = 0;
+	char ch;
+
+	while ((opt = getopt(argc, argv, "d:m:p:s:i:g:w:r:h?")) != -1) {
+		switch (opt) {
+		case 'd':
+			dev_index = atoi(optarg);
+			break;
+		case 'm':
+			manuf_str = optarg;
+			change = 1;
+			break;
+		case 'p':
+			product_str = optarg;
+			change = 1;
+			break;
+		case 's':
+			serial_str = optarg;
+			change = 1;
+			break;
+		case 'i':
+			ir_endpoint = (atoi(optarg) > 0) ? 1 : -1;
+			change = 1;
+			break;
+		case 'g':
+			if (!strcmp(optarg, "realtek"))
+				default_config = REALTEK;
+			else if (!strcmp(optarg, "realtek_oem"))
+				default_config = REALTEK_EEPROM;
+			else if (!strcmp(optarg, "noxon"))
+				default_config = TERRATEC_NOXON;
+			else if (!strcmp(optarg, "terratec_black"))
+				default_config = TERRATEC_T_BLACK;
+			else if (!strcmp(optarg, "terratec_plus"))
+				default_config = TERRATEC_T_PLUS;
+
+			if (default_config != CONF_NONE)
+				change = 1;
+			break;
+		case 'w':
+			flash_file = 1;
+			change = 1;
+			/* fall-through */
+		case 'r':
+			filename = optarg;
+			break;
+		default:
+			usage();
+			break;
+		}
+	}
+
+	device_count = rtlsdr_get_device_count();
+	if (!device_count) {
+		fprintf(stderr, "No supported devices found.\n");
+		exit(1);
+	}
+
+	fprintf(stderr, "Found %d device(s):\n", device_count);
+	for (i = 0; i < device_count; i++)
+		fprintf(stderr, "  %d:  %s\n", i, rtlsdr_get_device_name(i));
+	fprintf(stderr, "\n");
+
+	fprintf(stderr, "Using device %d: %s\n",
+		dev_index,
+		rtlsdr_get_device_name(dev_index));
+
+	r = rtlsdr_open(&dev, dev_index);
+	if (r < 0) {
+		fprintf(stderr, "Failed to open rtlsdr device #%d.\n", dev_index);
+		exit(1);
+	}
+
+	fprintf(stderr, "\n");
+
+	r = rtlsdr_read_eeprom(dev, buf, 0, EEPROM_SIZE);
+	if (r < 0) {
+		if (r == -3)
+			fprintf(stderr, "No EEPROM has been found.\n");
+		else
+			fprintf(stderr, "Failed to read EEPROM, err %i.\n", r);
+		goto exit;
+	}
+
+	if (r < 0)
+		return -1;
+
+	fprintf(stderr, "Current configuration:\n");
+	parse_eeprom_to_conf(&conf, buf);
+	dump_config(&conf);
+
+	if (filename) {
+		file = fopen(filename, flash_file ? "rb" : "wb");
+		if (!file) {
+			fprintf(stderr, "Error opening file!\n");
+			goto exit;
+		}
+		if (flash_file) {
+			if (fread(buf, 1, sizeof(buf), file) != sizeof(buf))
+				fprintf(stderr, "Error reading file!\n");
+		} else {
+			if (fwrite(buf, 1, sizeof(buf), file) != sizeof(buf))
+				fprintf(stderr, "Short write, exiting!\n");
+			else
+				fprintf(stderr, "\nDump to %s successful.\n", filename);
+		}
+	}
+
+	if (manuf_str)
+		strncpy((char*)&conf.manufacturer, manuf_str, MAX_STR_SIZE - 1);
+
+	if (product_str)
+		strncpy((char*)&conf.product, product_str, MAX_STR_SIZE - 1);
+
+	if (serial_str) {
+		conf.have_serial = 1;
+		strncpy((char*)&conf.serial, serial_str, MAX_STR_SIZE - 1);
+	}
+
+	if (ir_endpoint != 0)
+		 conf.enable_ir = (ir_endpoint > 0) ? 1 : 0;
+
+	if (!change)
+		goto exit;
+
+	fprintf(stderr, "\nNew configuration:\n");
+
+	if (default_config != CONF_NONE)
+		gen_default_conf(&conf, default_config);
+
+	if (!flash_file) {
+		if (gen_eeprom_from_conf(&conf, buf) < 0)
+			goto exit;
+	}
+
+	parse_eeprom_to_conf(&conf, buf);
+	dump_config(&conf);
+
+	fprintf(stderr, "Write new configuration to device [y/n]? ");
+
+	while ((ch = getchar())) {
+		if (ch != 'y')
+			goto exit;
+		else
+			break;
+	}
+
+	r = rtlsdr_write_eeprom(dev, buf, 0, flash_file ? EEPROM_SIZE : 128);
+	if (r < 0)
+		fprintf(stderr, "Error while writing EEPROM: %i\n", r);
+	else
+		fprintf(stderr, "\nConfiguration successfully written.\n"
+				"Please replug the device for changes"
+				" to take effect.\n");
+
+exit:
+	if (file)
+		fclose(file);
+
+	rtlsdr_close(dev);
+
+	return r >= 0 ? r : -r;
+}