Commit 25673eded3ea1aa4db45a1961cf85ed3282f2912

Jake 2014-06-15T19:07:11

Merge pull request #1 from ckolivas/master Sync with new upstream version

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diff --git a/ASIC-README b/ASIC-README
index 648142f..6019325 100644
--- a/ASIC-README
+++ b/ASIC-README
@@ -18,6 +18,7 @@ Currently supported devices include:
 - Cointerra
 - Antminer S1
 - BFx2 USB
+- Rockminer R-Box
 
 No COM ports on windows or TTY devices will be used by cgminer as it
 communicates directly with them via USB so it is normal for them to not exist or
@@ -120,6 +121,11 @@ BITMINE A1 devices
 
 Bitmine A1 devices need the --enable-bitmine_A1 compile option set.
 
+
+Rockminer R-Box
+
+Rockminer R-Box devices need the --enable-icarus compile option set.
+
 ---
 GETTING STARTED WITH USB ASICS
 
@@ -240,6 +246,7 @@ ASIC SPECIFIC COMMANDS
 --minion-overheat   Enable directly halting any chip when the status exceeds 100C
 --minion-temp <arg> Set minion chip temperature threshold, single value or comma list, range 120-160 (default: 135C)
 --nfu-bits <arg>    Set nanofury bits for overclocking, range 32-63 (default: 50)
+--rock-freq <arg>   Set RockMiner frequency in MHz, range 125-500 (default: 270)
 
 
 ANTMINER S1 DEVICES
@@ -630,6 +637,13 @@ Set 0 for fields you want to keep untouched to default, e.g.
 --bitmine-a1-options 0:0:400
 to only set SPI clock to 400kHz
 
+
+Rockminer R-Box Devices
+
+--rock-freq <arg>   Set RockMiner frequency in MHz, range 125-500 (default: 270)
+
+Note that only a limited range is likely to be accepted (usually 200-290)
+
 ---
 
 This code is provided entirely free of charge by the programmer in his spare
diff --git a/NEWS b/NEWS
index 4d51b97..27f2cad 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,29 @@
+Version 4.3.5 - 10th June 2014
+
+- Cointerra driver updates.
+- Sleep before retrying in the test pool thread after a pool has died
+- Use valid_ascii testing for job_id since it need not be hex only
+- Only show slow/down message till pool is flagged idle
+- Do some random sanity checking for stratum message parsing
+- Keep looking for when a pool comes to life at startup and touch the logwin so
+the message is not invisible
+- Fix no libcurl build
+- Added Drillbit Thumb to udev rules.
+- Avoid dereference on getting API stats on partially initialised HFA instances
+- A1: add support for updated product variants, small fixes
+- Add one more usbutils fix
+- Convert uses of usbutils memcpy to cg_memcpy
+- Add a sanity checking memcpy function which checks for overflows
+- minion - count force use reread
+- minion - add a disabled ioctl() test
+- minion - add more checking of SPI results for corruption
+- minion - optional (disabled) ioctl() debug
+- Increase S1 overheat to 75 degrees C
+- Add ruby api-example to API-README
+- minion - allow core selection at runtime
+- API - lcd all-in-one brief summary
+
+
 Version 4.3.4 - 25th May 2014
 
 - Add support for 2 nonces per block in spond driver
diff --git a/README b/README
index 55f6b2b..bfbafb6 100644
--- a/README
+++ b/README
@@ -234,6 +234,7 @@ Options for both config file and command line:
 --quiet|-q          Disable logging output, display status and errors
 --quota|-U <arg>    quota;URL combination for server with load-balance strategy quotas
 --real-quiet        Disable all output
+--rock-freq <arg>   Set RockMiner frequency in MHz, range 125-500 (default: 270)
 --rotate <arg>      Change multipool strategy from failover to regularly rotate at N minutes (default: 0)
 --round-robin       Change multipool strategy from failover to round robin on failure
 --scan-time|-s <arg> Upper bound on time spent scanning current work, in seconds (default: -1)
@@ -285,6 +286,7 @@ ASIC only options:
 --bitburner-fury-options <arg> Override avalon-options for BitBurner Fury boards baud:miners:asic:timeout:freq
 --bitburner-fury-voltage <arg> Set BitBurner Fury core voltage, in millivolts
 --bitburner-voltage <arg> Set BitBurner (Avalon) core voltage, in millivolts
+--bitmine-a1-options <ref_clk>:<sys_clk>:<spi_clk>:<max_chip>
 --bxf-temp-target <arg> Set target temperature for BXF devices (default: 82)
 --bxm-bits <arg>    Set BXM bits for overclocking (default: 50)
 --hfa-hash-clock <arg> Set hashfast clock speed (default: 550)
@@ -295,6 +297,7 @@ ASIC only options:
 --hfa-temp-overheat <arg> Set the hashfast overheat throttling temperature (default: 95)
 --hfa-temp-target <arg> Set the hashfast target temperature (0 to disable) (default: 88)
 --klondike-options <arg> Set klondike options clock:temptarget
+--rock-freq <arg>   Set RockMiner frequency in MHz, range 125-500 (default: 270)
 
 See ASIC-README for more information regarding these.
 
@@ -310,7 +313,8 @@ Cgminer should automatically find all of your Avalon ASIC, BFL ASIC, BitForce
 FPGAs, Icarus bitstream FPGAs, Klondike ASIC, ASICMINER usb block erupters,
 KnC ASICs, BaB ASICs, Hashfast ASICs, ModMiner FPGAs, BPMC/BGMC BF1 USB ASICs,
 Bi*fury USB ASICs, Onestring miner USB ASICs, Hexfury USB ASICs, Nanofury USB
-ASICs, Antminer U1/U2/U2+ USB ASICs, Cointerra devices and BFx2 USB ASICs.
+ASICs, Antminer U1/U2/U2+ USB ASICs, Cointerra devices, BFx2 USB ASICs and
+Rockminer R-Box USB ASICs.
 
 ---
 
diff --git a/cgminer.c b/cgminer.c
index 04cf81e..b03a44a 100644
--- a/cgminer.c
+++ b/cgminer.c
@@ -208,6 +208,7 @@ static bool no_work;
 char *opt_icarus_options = NULL;
 char *opt_icarus_timing = NULL;
 float opt_anu_freq = 200;
+float opt_rock_freq = 270;
 #endif
 bool opt_worktime;
 #ifdef USE_AVALON
@@ -1062,7 +1063,7 @@ static char *set_null(const char __maybe_unused *arg)
 static struct opt_table opt_config_table[] = {
 #ifdef USE_ICARUS
 	OPT_WITH_ARG("--anu-freq",
-		     set_float_125_to_500, &opt_show_intval, &opt_anu_freq,
+		     set_float_125_to_500, &opt_show_floatval, &opt_anu_freq,
 		     "Set AntminerU1 frequency in MHz, range 125-500"),
 #endif
 	OPT_WITH_ARG("--api-allow",
@@ -1416,6 +1417,11 @@ static struct opt_table opt_config_table[] = {
 	OPT_WITH_ARG("--retry-pause",
 		     set_null, NULL, &opt_set_null,
 		     opt_hidden),
+#ifdef USE_ICARUS
+	OPT_WITH_ARG("--rock-freq",
+		     set_float_125_to_500, &opt_show_floatval, &opt_rock_freq,
+		     "Set RockMiner frequency in MHz, range 125-500"),
+#endif
 	OPT_WITH_ARG("--rotate",
 		     set_rotate, NULL, &opt_set_null,
 		     "Change multipool strategy from failover to regularly rotate at N minutes"),
@@ -3006,13 +3012,18 @@ share_result(json_t *val, json_t *res, json_t *err, const struct work *work,
 				reason[reasonLen + 2] = ')'; reason[reasonLen + 3] = '\0';
 				memcpy(disposition + 7, reasontmp, reasonLen);
 				disposition[6] = ':'; disposition[reasonLen + 7] = '\0';
-			} else if (work->stratum && err && json_is_array(err)) {
-				json_t *reason_val = json_array_get(err, 1);
-				char *reason_str;
-
-				if (reason_val && json_is_string(reason_val)) {
-					reason_str = (char *)json_string_value(reason_val);
-					snprintf(reason, 31, " (%s)", reason_str);
+			} else if (work->stratum && err) {
+				if (json_is_array(err)) {
+					json_t *reason_val = json_array_get(err, 1);
+					char *reason_str;
+
+					if (reason_val && json_is_string(reason_val)) {
+						reason_str = (char *)json_string_value(reason_val);
+						snprintf(reason, 31, " (%s)", reason_str);
+					}
+				} else if (json_is_string(err)) {
+					const char *s = json_string_value(err);
+					snprintf(reason, 31, " (%s)", s);
 				}
 			}
 
@@ -6656,7 +6667,7 @@ retry_stratum:
 		}
 		applog(LOG_DEBUG, "FAILED to retrieve work from pool %u %s",
 		       pool->pool_no, pool->rpc_url);
-		if (!pinging)
+		if (!pinging && !pool->idle)
 			applog(LOG_WARNING, "Pool %u slow/down or URL or credentials invalid", pool->pool_no);
 	}
 out:
@@ -8634,10 +8645,12 @@ retry:
 		if (unlikely(first_pool))
 			applog(LOG_NOTICE, "Switching to pool %d %s - first alive pool", pool->pool_no, pool->rpc_url);
 
+		pool_tclear(pool, &pool->idle);
 		pool_resus(pool);
 		switch_pools(NULL);
 	} else {
 		pool_died(pool);
+		sleep(5);
 		goto retry;
 	}
 
@@ -9004,6 +9017,20 @@ static void adjust_mostdevs(void)
 		most_devices = total_devices - zombie_devs;
 }
 
+#ifdef USE_ICARUS
+bool icarus_get_device_id(struct cgpu_info *cgpu)
+{
+	static struct _cgpu_devid_counter *devids = NULL;
+	struct _cgpu_devid_counter *d;
+
+	HASH_FIND_STR(devids, cgpu->drv->name, d);
+	if (d)
+		return (d->lastid + 1);
+	else
+		return 0;
+}
+#endif
+
 bool add_cgpu(struct cgpu_info *cgpu)
 {
 	static struct _cgpu_devid_counter *devids = NULL;
diff --git a/configure.ac b/configure.ac
index 020ac7e..d42c1b1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 ##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##
 m4_define([v_maj], [4])
 m4_define([v_min], [3])
-m4_define([v_mic], [4])
+m4_define([v_mic], [5])
 ##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##
 m4_define([v_ver], [v_maj.v_min.v_mic])
 m4_define([lt_rev], m4_eval(v_maj + v_min))
diff --git a/driver-cointerra.c b/driver-cointerra.c
index a11f390..a84b9cf 100644
--- a/driver-cointerra.c
+++ b/driver-cointerra.c
@@ -11,7 +11,6 @@
 
 #include "miner.h"
 #include "driver-cointerra.h"
-#include <math.h>
 
 static const char *cointerra_hdr = "ZZ";
 
@@ -355,7 +354,7 @@ static void cta_parse_recvmatch(struct thr_info *thr, struct cgpu_info *cointerr
 			/* Debugging, remove me */
 			swab256(rhash, work->hash);
 			__bin2hex(outhash, rhash, 8);
-			applog(LOG_DEBUG, "submit work %s 0x%04x 0x%08x %d 0x%08x",
+			applog(LOG_WARNING, "submit work %s 0x%04x 0x%08x %d 0x%08x",
 			       outhash, retwork, mcu_tag, timestamp_offset, nonce);
 		}
 
@@ -392,9 +391,16 @@ static void cta_parse_recvmatch(struct thr_info *thr, struct cgpu_info *cointerr
 			mutex_unlock(&info->lock);
 		} else {
 			char sendbuf[CTA_MSG_SIZE];
+			uint8_t asic, core, coreno;
+			asic = u8_from_msg(buf, CTA_MCU_ASIC);
+			core = u8_from_msg(buf, CTA_MCU_CORE);
+			coreno = asic * 4 + core;
+			inc_hw_errors(thr);
 
-			applog(LOG_DEBUG, "%s %d: Notify bad match work",
+			applog(LOG_WARNING, "%s %d: Notify bad match work",
 			       cointerra->drv->name, cointerra->device_id);
+			if (coreno < CTA_CORES)
+				info->fmatch_errors[coreno]++;
 			if (opt_debug) {
 				uint64_t sdiff = share_diff(work);
 				unsigned char midstate[32], wdata[12];
@@ -418,12 +424,12 @@ static void cta_parse_recvmatch(struct thr_info *thr, struct cgpu_info *cointerr
 
 			/* Tell the device we got a false match */
 			cta_gen_message(sendbuf, CTA_SEND_FMATCH);
-			memcpy(sendbuf + 3, buf, CTA_MSG_SIZE - 3);
+			memcpy(sendbuf + 3, buf + 3, CTA_MSG_SIZE - 3);
 			cta_send_msg(cointerra, sendbuf);
 		}
 		free_work(work);
 	} else {
-		applog(LOG_INFO, "%s %d: Matching work id 0x%X %d not found", cointerra->drv->name,
+		applog(LOG_WARNING, "%s %d: Matching work id 0x%X %d not found", cointerra->drv->name,
 		       cointerra->device_id, retwork, __LINE__);
 		inc_hw_errors(thr);
 
@@ -440,10 +446,12 @@ static void cta_parse_wdone(struct thr_info *thr, struct cgpu_info *cointerra,
 	struct work *work = take_work_by_id(cointerra, retwork);
 	uint64_t hashes;
 
-	if (likely(work))
+	if (likely(work)) {
 		free_work(work);
-	else {
-		applog(LOG_INFO, "%s %d: Done work not found id 0x%X %d",
+		applog(LOG_DEBUG, "%s %d: Done work found id 0x%X %d",
+		       cointerra->drv->name, cointerra->device_id, retwork, __LINE__);
+	} else {
+		applog(LOG_WARNING, "%s %d: Done work not found id 0x%X %d",
 		       cointerra->drv->name, cointerra->device_id, retwork, __LINE__);
 		inc_hw_errors(thr);
 	}
@@ -519,6 +527,27 @@ static void cta_parse_statset(struct cointerra_info *info, char *buf)
 	mutex_unlock(&info->lock);
 }
 
+static void cta_parse_irstat(struct cointerra_info *info, char *buf)
+{
+	uint8_t channel = u8_from_msg(buf,CTA_IRSTAT_CHANNEL);
+
+	if (channel >= CTA_CORES)
+		return;
+
+	mutex_lock(&info->lock);
+	info->irstat_vin[channel] = hu16_from_msg(buf,CTA_IRSTAT_VIN);
+	info->irstat_iin[channel] = hu16_from_msg(buf,CTA_IRSTAT_IIN);
+	info->irstat_vout[channel] = hu16_from_msg(buf,CTA_IRSTAT_VOUT);
+	info->irstat_iout[channel] = hu16_from_msg(buf,CTA_IRSTAT_IOUT);
+	info->irstat_temp1[channel] = hu16_from_msg(buf,CTA_IRSTAT_TEMP1);
+	info->irstat_temp2[channel] = hu16_from_msg(buf,CTA_IRSTAT_TEMP2);
+	info->irstat_pout[channel] = hu16_from_msg(buf,CTA_IRSTAT_POUT);
+	info->irstat_pin[channel] = hu16_from_msg(buf,CTA_IRSTAT_PIN);
+	info->irstat_efficiency[channel] = hu16_from_msg(buf,CTA_IRSTAT_EFF);
+	info->irstat_status[channel] = hu16_from_msg(buf,CTA_IRSTAT_STATUS);
+	mutex_unlock(&info->lock);
+}
+
 static void cta_parse_info(struct cgpu_info *cointerra, struct cointerra_info *info,
 			   char *buf)
 {
@@ -557,8 +586,6 @@ static void cta_parse_rdone(struct cgpu_info *cointerra, struct cointerra_info *
 	diffbits = buf[CTA_RESET_DIFF];
 	wdone = hu64_from_msg(buf, CTA_WDONE_NONCES);
 
-	applog(LOG_INFO, "%s %d: Reset done type %u message %u diffbits %"PRIu64" done received",
-	       cointerra->drv->name, cointerra->device_id, reset_type, diffbits, wdone);
 	if (wdone) {
 		applog(LOG_INFO, "%s %d: Reset done type %u message %u diffbits %"PRIu64" done received",
 			cointerra->drv->name, cointerra->device_id, reset_type, diffbits, wdone);
@@ -623,9 +650,29 @@ static void cta_parse_debug(struct cointerra_info *info, char *buf)
 	}
 }
 
+static int verify_checksum(char *buf)
+{
+	unsigned char checksum = 0;
+	unsigned char i;
+
+	for (i = 0; i < 63; i++)
+		checksum += buf[i];
+
+	return (checksum == buf[63]);
+}
+
 static void cta_parse_msg(struct thr_info *thr, struct cgpu_info *cointerra,
 			  struct cointerra_info *info, char *buf)
 {
+		if ((buf[CTA_MSG_TYPE] != CTA_RECV_MATCH)&&
+		    (buf[CTA_MSG_TYPE] != CTA_RECV_WDONE)) {
+			if (unlikely(verify_checksum(buf) == 0)) {
+				inc_hw_errors(thr);
+				applog(LOG_WARNING, "%s %d: checksum bad",cointerra->drv->name,cointerra->device_id);
+				return;
+			}
+		}
+
 	switch (buf[CTA_MSG_TYPE]) {
 		default:
 		case CTA_RECV_UNUSED:
@@ -668,6 +715,9 @@ static void cta_parse_msg(struct thr_info *thr, struct cgpu_info *cointerra,
 		case CTA_RECV_STATDEBUG:
 			cta_parse_debug(info, buf);
 			break;
+		case CTA_RECV_IRSTAT:
+			cta_parse_irstat(info, buf);
+			break;
 	}
 }
 
@@ -953,10 +1003,14 @@ static void cta_send_corehashes(struct cgpu_info *cointerra, struct cointerra_in
 	int i, offset;
 
 	for (i = 0; i < CTA_CORES; i++) {
-		k[i] = (double)info->tot_core_hashes[i] / ((double)32 * (double)0x100000000ull);
+		k[i] = (double)info->tot_core_hashes[i];
+#if 0
+		k[i] /= ((double)32 * (double)0x100000000ull);
 		k[i] = sqrt(k[i]) + 1;
 		k[i] *= k[i];
-		k[i] = k[i] * 32 * ((double)0x100000000ull / (double)1000000000) / corehash_time;
+		k[i] = k[i] * 32 * ((double)0x100000000ull );
+#endif
+		k[i] /= ((double)1000000000 * corehash_time);
 		core_ghs[i] = k[i];
 	}
 	cta_gen_message(buf, CTA_SEND_COREHASHRATE);
@@ -974,6 +1028,7 @@ static int64_t cta_scanwork(struct thr_info *thr)
 	struct cointerra_info *info = cointerra->device_data;
 	double corehash_time;
 	struct timeval now;
+	uint32_t runtime;
 	int64_t hashes;
 
 	applog(LOG_DEBUG, "%s %d: cta_scanwork %d", cointerra->drv->name, cointerra->device_id,__LINE__);
@@ -1038,6 +1093,9 @@ static int64_t cta_scanwork(struct thr_info *thr)
 	hashes = info->share_hashes;
 	info->tot_share_hashes += info->share_hashes;
 	info->tot_calc_hashes += info->hashes;
+	runtime = cgpu_runtime(thr->cgpu);
+	runtime /= 30;
+	info->old_hashes[runtime % 32] = info->tot_calc_hashes;
 	info->hashes = info->share_hashes = 0;
 	mutex_unlock(&info->lock);
 
@@ -1069,11 +1127,15 @@ static void cta_shutdown(struct thr_info *thr)
 static void cta_zero_stats(struct cgpu_info *cointerra)
 {
 	struct cointerra_info *info = cointerra->device_data;
+	int i;
 
 	info->tot_calc_hashes = 0;
 	info->tot_reset_hashes = info->tot_hashes;
 	info->tot_share_hashes = 0;
 	cta_zero_corehashes(info);
+
+	for (i = 0; i < 16 * 2; i++)
+		info->old_hashes[i] = 0;
 }
 
 static int bits_set(char v)
@@ -1095,6 +1157,7 @@ static struct api_data *cta_api_stats(struct cgpu_info *cgpu)
 	char bitmaphex[36];
 	uint64_t ghs, val;
 	char buf[64];
+	uint32_t runtime = cgpu_runtime(cgpu);
 
 	/* Info data */
 	root = api_add_uint16(root, "HW Revision", &info->hwrev, false);
@@ -1166,6 +1229,14 @@ static struct api_data *cta_api_stats(struct cgpu_info *cgpu)
 	root = api_add_uint64(root, "Calc hashrate", &ghs, true);
 	ghs = (info->tot_hashes - info->tot_reset_hashes) / dev_runtime;
 	root = api_add_uint64(root, "Hashrate", &ghs, true);
+	//root = api_add_uint64(root, "cgminer 15m Hashrate", &cgpu->rolling15, true);
+	// get runtime in 30 second steps
+	runtime = runtime / 30;
+	// store the current hashes
+	info->old_hashes[runtime%32] = info->tot_calc_hashes;
+	// calc the 15 minute average hashrate
+	ghs = (info->old_hashes[(runtime+31)%32] - info->old_hashes[(runtime+1)%32])/(15*60);
+	root = api_add_uint64(root, "15m Hashrate", &ghs, true);
 	ghs = info->tot_share_hashes / dev_runtime;
 	root = api_add_uint64(root, "Share hashrate", &ghs, true);
 	root = api_add_uint64(root, "Total calc hashes", &info->tot_calc_hashes, false);
@@ -1209,13 +1280,63 @@ static struct api_data *cta_api_stats(struct cgpu_info *cgpu)
 	}
 	root = api_add_uint8(root, "AV", &info->autovoltage, false);
 	root = api_add_uint8(root, "Power Supply Percent", &info->current_ps_percent, false);
-	root = api_add_uint16(root, "Power Used", &info->power_used, false);
-	root = api_add_uint16(root, "IOUT", &info->power_used, false);
-	root = api_add_uint16(root, "VOUT", &info->power_voltage, false);
-	root = api_add_uint16(root, "IIN", &info->ipower_used, false);
-	root = api_add_uint16(root, "VIN", &info->ipower_voltage, false);
-	root = api_add_uint16(root, "PSTemp1", &info->power_temps[0], false);
-	root = api_add_uint16(root, "PSTemp2", &info->power_temps[1], false);
+	//if (info->power_used != 0) {
+	{
+		double value = info->power_used/100.0;
+
+		value *= (info->power_voltage/100.0);
+		root = api_add_double(root, "Power Used", &value, true);
+	}
+		root = api_add_uint16(root, "IOUT", &info->power_used, false);
+		root = api_add_uint16(root, "VOUT", &info->power_voltage, false);
+		root = api_add_uint16(root, "IIN", &info->ipower_used, false);
+		root = api_add_uint16(root, "VIN", &info->ipower_voltage, false);
+		root = api_add_uint16(root, "PSTemp1", &info->power_temps[0], false);
+		root = api_add_uint16(root, "PSTemp2", &info->power_temps[1], false);
+	//}
+
+	for (core = 0; core < CTA_CORES; core++) {
+		char name[20];
+		char str[20];
+		double value;
+
+		sprintf(name,"IRVIN%d",core+1);
+		value = info->irstat_vin[core]/100.0;
+		root = api_add_double(root,name,&value,true);
+		sprintf(name,"IRIIN%d",core+1);
+		value = info->irstat_iin[core]/100.0;
+		root = api_add_double(root,name,&value,true);
+		sprintf(name,"IRVOUT%d",core+1);
+		value = info->irstat_vout[core]/100.0;
+		root = api_add_double(root,name,&value,true);
+		sprintf(name,"IRIOUT%d",core+1);
+		value = info->irstat_iout[core]/100.0;
+		root = api_add_double(root,name,&value,true);
+		sprintf(name,"IRTEMP1_%d",core+1);
+		value = info->irstat_temp1[core]/100.0;
+		root = api_add_double(root,name,&value,true);
+		sprintf(name,"IRTEMP2_%d",core+1);
+		value = info->irstat_temp2[core]/100.0;
+		root = api_add_double(root,name,&value,true);
+		sprintf(name,"IRPOUT%d",core+1);
+		value = info->irstat_pout[core]/100.0;
+		root = api_add_double(root,name,&value,true);
+		sprintf(name,"IRPIN%d",core+1);
+		value = info->irstat_pin[core]/100.0;
+		root = api_add_double(root,name,&value,true);
+		sprintf(name,"IREFFICIENCY%d",core+1);
+		value = info->irstat_efficiency[core]/100.0;
+		root = api_add_double(root,name,&value,true);
+		sprintf(name,"IRSTATUS%d",core+1);
+		//root = api_add_uint16(root,name,&info->irstat_status[core],false);
+		sprintf(str,"0x%04X",info->irstat_status[core]);
+			root = api_add_string(root, name, str, true);
+	}
+
+	for (i = 0; i < CTA_CORES; i++) {
+		sprintf(buf, "CoreFmatch%d", i);
+		root = api_add_uint16(root, buf, &info->fmatch_errors[i], false);
+	}
 
 	return root;
 }
@@ -1252,5 +1373,5 @@ struct device_drv cointerra_drv = {
 	.get_statline_before = cta_statline_before,
 	.thread_shutdown = cta_shutdown,
 	.zero_stats = cta_zero_stats,
-	.max_diff = 32, // Set it below the actual limit to check nonces
+	.max_diff = 64, // Set it below the actual limit to check nonces
 };
diff --git a/driver-cointerra.h b/driver-cointerra.h
index e989cf5..6f0649c 100644
--- a/driver-cointerra.h
+++ b/driver-cointerra.h
@@ -61,6 +61,7 @@
 #define CTA_RECV_MSG            7
 #define CTA_RECV_RDONE		8
 #define CTA_RECV_STATDEBUG	10
+#define CTA_RECV_IRSTAT  	11
 
 /* Sent message types */
 #define CTA_SEND_UNUSED		0
@@ -129,6 +130,18 @@
 #define CTA_STAT_PS_TEMP1	51
 #define CTA_STAT_PS_TEMP2	53
 
+#define CTA_IRSTAT_CHANNEL  3
+#define CTA_IRSTAT_VIN  4
+#define CTA_IRSTAT_IIN  6
+#define CTA_IRSTAT_VOUT 8
+#define CTA_IRSTAT_IOUT 10
+#define CTA_IRSTAT_TEMP1  12
+#define CTA_IRSTAT_TEMP2  14
+#define CTA_IRSTAT_POUT 16
+#define CTA_IRSTAT_PIN  18
+#define CTA_IRSTAT_EFF  20
+#define CTA_IRSTAT_STATUS 22
+
 
 #define CTA_CORES		8
 #define CTA_PUMPS		2
@@ -181,6 +194,7 @@ struct cointerra_info {
 	/* Status debug data */
 	uint16_t underruns;
 	uint16_t hw_errors[CTA_CORES];
+	uint16_t fmatch_errors[CTA_CORES];
 
 	/* Running total from debug messages */
 	int tot_underruns;
@@ -219,6 +233,19 @@ struct cointerra_info {
 	pthread_cond_t wake_cond;
 	pthread_t read_thr;
 	cgsem_t reset_sem;
+
+	uint16_t irstat_vin[CTA_CORES];
+	uint16_t irstat_iin[CTA_CORES];
+	uint16_t irstat_vout[CTA_CORES];
+	uint16_t irstat_iout[CTA_CORES];
+	uint16_t irstat_temp1[CTA_CORES];
+	uint16_t irstat_temp2[CTA_CORES];
+	uint16_t irstat_pout[CTA_CORES];
+	uint16_t irstat_pin[CTA_CORES];
+	uint16_t irstat_efficiency[CTA_CORES];
+	uint16_t irstat_status[CTA_CORES];
+
+	uint64_t old_hashes[16 * 2];
 };
 
 #endif /* COINTERRA_H */
diff --git a/driver-icarus.c b/driver-icarus.c
index 8bae1ca..635531c 100644
--- a/driver-icarus.c
+++ b/driver-icarus.c
@@ -50,6 +50,8 @@
 #include "miner.h"
 #include "usbutils.h"
 
+#define ROCKMINER
+#define ROCKMINER_PRINT_DEBUG 0
 // The serial I/O speed - Linux uses a define 'B115200' in bits/termios.h
 #define ICARUS_IO_SPEED 115200
 
@@ -57,6 +59,7 @@
 // The size of a successful nonce read
 #define ANT_READ_SIZE 5
 #define ICARUS_READ_SIZE 4
+#define ROCK_READ_SIZE 8
 
 // Ensure the sizes are correct for the Serial read
 #if (ICARUS_READ_SIZE != 4)
@@ -272,6 +275,84 @@ struct ICARUS_WORK {
 	uint8_t work[ICARUS_WORK_SIZE];
 };
 
+#define MAX_DEVICE_NUM 100
+#define MAX_WORK_BUFFER_SIZE 2
+#define MAX_CHIP_NUM 24
+#define	NONCE_CORRECTION_TIMES	3
+#define MAX_TRIES	4
+//#define	NONCE_TEST
+#define	RM_CMD_MASK		0x0F
+#define	RM_STATUS_MASK		0xF0
+#define	RM_CHIP_MASK		0x3F
+#define	RM_PRODUCT_MASK		0xC0
+#define	RM_PRODUCT_RBOX		0x00
+#define	RM_PRODUCT_T1		0x10
+
+#ifdef NONCE_TEST
+int device_nonce_conunts[MAX_DEVICE_NUM];
+int chip_nonce_conunts[MAX_CHIP_NUM];
+int chip_work_conunts[MAX_CHIP_NUM];
+int device_nonce_corr_ok_1[MAX_DEVICE_NUM];
+int device_nonce_corr_ok[MAX_DEVICE_NUM];
+int device_nonce_corr_fail[MAX_DEVICE_NUM];
+int device_nonce_corr_fail_2[MAX_DEVICE_NUM];
+#endif
+
+typedef enum {
+	NONCE_DATA1_OFFSET= 0,
+	NONCE_DATA2_OFFSET,
+	NONCE_DATA3_OFFSET,
+	NONCE_DATA4_OFFSET,
+	NONCE_TASK_CMD_OFFSET,
+	NONCE_CHIP_NO_OFFSET,
+	NONCE_TASK_NO_OFFSET,
+	NONCE_COMMAND_OFFSET,
+	NONCE_MAX_OFFSET
+} NONCE_OFFSET;
+
+typedef enum {
+	NONCE_DATA_CMD= 0,
+	NONCE_TASK_COMPLETE_CMD,
+	NONCE_GET_TASK_CMD,
+} NONCE_COMMAND;
+
+typedef struct NONCE_DATA
+{
+int chip_no ;
+unsigned int task_no ;
+unsigned char work_state;
+int cmd_value;
+}NONCE_DATA;
+
+
+
+typedef enum {
+	ROCKMINER_RBOX= 0,
+	ROCKMINER_T1,
+	ROCKMINER_MAX
+} ROCKMINER_PRODUCT_T;
+
+typedef struct ROCKMINER_CHIP_INFO
+{
+unsigned char freq;
+int error_cnt;
+time_t last_received_task_complete_time;
+}ROCKMINER_CHIP_INFO;
+
+typedef struct ROCKMINER_DEVICE_INFO
+{
+unsigned char detect_chip_no;
+unsigned char chip_max;
+unsigned char product_id;
+float min_frq;
+float def_frq;
+float max_frq;
+ROCKMINER_CHIP_INFO chip[MAX_CHIP_NUM];
+time_t dev_detect_time;
+}ROCKMINER_DEVICE_INFO;
+
+ROCKMINER_DEVICE_INFO rmdev[MAX_DEVICE_NUM];
+
 #define END_CONDITION 0x0000ffff
 
 // Looking for options in --icarus-timing and --icarus-options:
@@ -955,6 +1036,46 @@ static bool set_anu_freq(struct cgpu_info *icarus, struct ICARUS_INFO *info)
 	return true;
 }
 
+static void rock_init_last_received_task_complete_time(uint32_t dev_id)
+{
+	int i;
+	if(opt_rock_freq<rmdev[dev_id].min_frq||(opt_rock_freq>rmdev[dev_id].max_frq))
+			opt_rock_freq =rmdev[dev_id].def_frq;
+	for (i = 0; i < MAX_CHIP_NUM; ++i)
+	{
+		rmdev[dev_id].chip[i].last_received_task_complete_time = time(NULL);
+		rmdev[dev_id].chip[i].freq = opt_rock_freq/10 - 1;
+		rmdev[dev_id].chip[i].error_cnt= 0;
+	}
+	rmdev[dev_id].dev_detect_time = time(NULL);
+}
+
+struct work *g_work[MAX_DEVICE_NUM][MAX_CHIP_NUM][MAX_WORK_BUFFER_SIZE];
+
+void clear_chip_busy(int device_id)
+{
+	memset(&(g_work[device_id][0]), 0, (sizeof(g_work)/MAX_DEVICE_NUM));
+}
+
+void rock_print_work_data(struct ICARUS_WORK *p_workdata)
+{
+	char *ob_hex = NULL;
+	opt_debug = ROCKMINER_PRINT_DEBUG;
+	if (opt_debug) {
+		ob_hex = bin2hex((void *)(p_workdata), sizeof(*p_workdata));
+		applog(LOG_WARNING, "sent %s", ob_hex);
+		free(ob_hex);
+
+        rev((void *)(&(p_workdata->midstate)), ICARUS_MIDSTATE_SIZE);
+    	rev((void *)(&(p_workdata->work)), ICARUS_WORK_SIZE);
+    	ob_hex = bin2hex((void *)(p_workdata), sizeof(*p_workdata));
+    	applog(LOG_WARNING, "revert sent %s", ob_hex);
+    	free(ob_hex);
+	}
+}
+
+bool icarus_get_device_id(struct cgpu_info *cgpu);
+
 static struct cgpu_info *icarus_detect_one(struct libusb_device *dev, struct usb_find_devices *found)
 {
 	int this_option_offset = ++option_offset;
@@ -1056,6 +1177,13 @@ cmr2_retry:
 		if (ret != ICA_NONCE_OK)
 			continue;
 
+		if (info->nonce_size == ICARUS_READ_SIZE && usb_buffer_size(icarus) == 4) {
+			applog(LOG_DEBUG, "%s %i: Detected Rockminer, deferring detection",
+			       icarus->drv->name, icarus->device_id);
+			usb_buffer_clear(icarus);
+			break;
+
+		}
 		if (info->nonce_size == ICARUS_READ_SIZE && usb_buffer_size(icarus) == 1) {
 			usb_buffer_clear(icarus);
 			icarus->usbdev->ident = info->ident = IDENT_ANU;
@@ -1218,8 +1346,260 @@ shin:
 	return NULL;
 }
 
+static int64_t rock_scanwork(struct thr_info *thr);
+
+static bool rock_prepare(struct thr_info *thr)
+{
+	struct cgpu_info *icarus = thr->cgpu;
+
+	icarus->drv->name = "LIN";
+	return true;
+}
+
+static void rock_statline_before(char *buf, size_t bufsiz, struct cgpu_info *cgpu)
+{
+	if (cgpu->temp)
+		tailsprintf(buf, bufsiz, "%3.0fMHz %3.0fC", opt_rock_freq, cgpu->temp);
+	else
+		tailsprintf(buf, bufsiz, "%.0fMHz", opt_rock_freq);
+}
+
+static struct cgpu_info *rock_detect_one(struct libusb_device *dev, struct usb_find_devices *found)
+{
+	struct ICARUS_INFO *info;
+	struct timeval tv_start, tv_finish;
+	int opt_debug = ROCKMINER_PRINT_DEBUG;
+	char *ob_hex = NULL;
+
+	// Block 171874 nonce = (0xa2870100) = 0x000187a2
+	// N.B. golden_ob MUST take less time to calculate
+	//	than the timeout set in icarus_open()
+	//	This one takes ~0.53ms on Rev3 Icarus
+	const char golden_ob[] =
+		"4679ba4ec99876bf4bfe086082b40025"
+		"4df6c356451471139a3afa71e48f544a"
+		"00000000000000000000000000000000"
+		"aa1ff05587320b1a1426674f2fa722ce";
+
+	const char golden_nonce[] = "000187a2";
+	const uint32_t golden_nonce_val = 0x000187a2;
+	unsigned char nonce_bin[ROCK_READ_SIZE];
+	struct ICARUS_WORK workdata;
+	char *nonce_hex;
+	struct cgpu_info *icarus;
+	int ret, err, amount, tries;
+	bool ok;
+	int correction_times = 0;
+#if (NONCE_CORRECTION_TIMES == 9)
+	int32_t correction_value[] = {0, 1, -1, 2, -2, 3, -3, 4, -4};
+#endif
+#if (NONCE_CORRECTION_TIMES == 3)
+	int32_t correction_value[] = {0, 1, -1};
+#endif
+	NONCE_DATA nonce_data;
+
+	uint32_t nonce;
+	//int cmd_value = 0;
+	int dev_id;
+
+	if ((sizeof(workdata) << 1) != (sizeof(golden_ob) - 1))
+		quithere(1, "Data and golden_ob sizes don't match");
+
+	icarus = usb_alloc_cgpu(&icarus_drv, 1);
+
+	if (!usb_init(icarus, dev, found))
+		goto shin;
+
+#ifdef WIN32
+	dev_id = icarus_get_device_id(icarus);
+#else
+	dev_id = icarus->device_id;
+#endif
+
+	hex2bin((void *)(&workdata), golden_ob, sizeof(workdata));
+	rev((void *)(&(workdata.midstate)), ICARUS_MIDSTATE_SIZE);
+	rev((void *)(&(workdata.work)), ICARUS_WORK_SIZE);
+	opt_debug = ROCKMINER_PRINT_DEBUG;
+	if (opt_debug) {
+		ob_hex = bin2hex((void *)(&workdata), sizeof(workdata));
+		applog(LOG_WARNING, "%s%d: send_gold_nonce %s",
+			icarus->drv->name, icarus->device_id, ob_hex);
+		free(ob_hex);
+	}
+
+	info = (struct ICARUS_INFO *)calloc(1, sizeof(struct ICARUS_INFO));
+	if (unlikely(!info))
+		quit(1, "Failed to malloc ICARUS_INFO");
+	(void)memset(info, 0, sizeof(struct ICARUS_INFO));
+	icarus->device_data = (void *)info;
+	icarus->usbdev->ident = info->ident = IDENT_LIN;
+	info->nonce_size = ROCK_READ_SIZE;
+	info->fail_time = 10;
+	info->nonce_mask = 0xffffffff;
+	update_usb_stats(icarus);
+
+	tries = MAX_TRIES;
+	ok = false;
+	while (!ok && tries-- > 0) {
+#if ROCKMINER_PRINT_DEBUG
+		applog(LOG_WARNING, "tries: %d", tries);
+#endif
+		workdata.unused[ICARUS_UNUSED_SIZE - 3] = opt_rock_freq/10 - 1;
+		workdata.unused[ICARUS_UNUSED_SIZE - 2] = (MAX_TRIES-1-tries);
+		rmdev[dev_id].detect_chip_no ++;
+			if(rmdev[dev_id].detect_chip_no >=MAX_TRIES )
+				rmdev[dev_id].detect_chip_no = 0;
+		//g_detect_chip_no[dev_id] = (g_detect_chip_no[dev_id] + 1) & MAX_CHIP_NUM;
+
+		err = usb_write_ii(icarus, info->intinfo,
+				   (char *)(&workdata), sizeof(workdata), &amount, C_SENDWORK);
+		rock_print_work_data(&workdata);
+		if (err != LIBUSB_SUCCESS || amount != sizeof(workdata))
+		continue;
+
+		memset(nonce_bin, 0, sizeof(nonce_bin));
+		ret = icarus_get_nonce(icarus, nonce_bin, &tv_start, &tv_finish, NULL, 100);
+#if ROCKMINER_PRINT_DEBUG
+		applog(LOG_WARNING, "Rockminer nonce_bin: %02X, %02X, %02X, %02X, %02X, %02X, %02X, %02X", nonce_bin[0], nonce_bin[1], nonce_bin[2], nonce_bin[3], nonce_bin[4], nonce_bin[5], nonce_bin[6], nonce_bin[7]);
+#endif
+		if (ret != ICA_NONCE_OK)
+		{
+#if ROCKMINER_PRINT_DEBUG
+		applog(LOG_WARNING, "detect_one get_gold_nonce error, tries = %d.\r\n", tries);
+#endif
+			continue;
+		}
+
+		//device max chip
+		if((nonce_bin[NONCE_CHIP_NO_OFFSET]&RM_PRODUCT_MASK)==RM_PRODUCT_T1)
+		{
+			rmdev[dev_id].product_id = ROCKMINER_T1;
+			rmdev[dev_id].chip_max = 24;
+			rmdev[dev_id].min_frq = 200;
+			rmdev[dev_id].def_frq = 280;
+			rmdev[dev_id].max_frq = 320;
+		}
+		else
+		{
+			rmdev[dev_id].product_id= ROCKMINER_RBOX;
+			rmdev[dev_id].chip_max = 4;
+			rmdev[dev_id].min_frq = 200;
+			rmdev[dev_id].def_frq = 270;
+			rmdev[dev_id].max_frq = 290;
+		}
+		nonce_data.chip_no = nonce_bin[NONCE_CHIP_NO_OFFSET]&RM_CHIP_MASK;
+		if (nonce_data.chip_no >= rmdev[dev_id].chip_max)
+		{
+			nonce_data.chip_no = 0;
+		}
+
+		nonce_data.cmd_value = nonce_bin[NONCE_TASK_CMD_OFFSET]&RM_CMD_MASK;
+		if (nonce_data.cmd_value == NONCE_TASK_COMPLETE_CMD)
+		{
+#if ROCKMINER_PRINT_DEBUG
+			applog(LOG_WARNING, "complete g_detect_chip_no: %d", rmdev[dev_id].detect_chip_no);
+#endif
+		workdata.unused[ICARUS_UNUSED_SIZE - 3] = opt_rock_freq/10 - 1;
+			workdata.unused[ICARUS_UNUSED_SIZE - 2] =  rmdev[dev_id].detect_chip_no;
+			rmdev[dev_id].detect_chip_no ++;
+			if(rmdev[dev_id].detect_chip_no>=MAX_TRIES)
+				rmdev[dev_id].detect_chip_no = 0;
+
+			err = usb_write_ii(icarus, info->intinfo,
+				   (char *)(&workdata), sizeof(workdata), &amount, C_SENDWORK);
+			rock_print_work_data(&workdata);
+			if (err != LIBUSB_SUCCESS || amount != sizeof(workdata))
+				continue;
+#if ROCKMINER_PRINT_DEBUG
+			applog(LOG_WARNING, "send_gold_nonce usb_write_ii");
+#endif
+			continue;
+		}
+
+		memcpy((char *)&nonce, nonce_bin, ICARUS_READ_SIZE);
+		nonce = htobe32(nonce);
+#if ROCKMINER_PRINT_DEBUG
+		applog(LOG_WARNING, "Rockminer nonce: %08X", nonce);
+#endif
+		correction_times = 0;
+		while(correction_times<NONCE_CORRECTION_TIMES)
+		{
+			nonce_hex = bin2hex(nonce_bin, 4);
+			if (golden_nonce_val == nonce + correction_value[correction_times]) {
+				clear_chip_busy(dev_id);
+				rock_init_last_received_task_complete_time(dev_id);
+
+				ok = true;
+				break;
+			} else {
+#if ROCKMINER_PRINT_DEBUG
+				applog(LOG_WARNING, "detect_one gold_nonce compare error times = %d\r\n", correction_times);
+#endif
+				if (tries < 0 && info->ident != IDENT_CMR2) {
+					applog(LOG_WARNING,
+						"Icarus Detect: "
+						"Test failed at %s: get %s, should: %s",
+						icarus->device_path, nonce_hex, golden_nonce);
+				}
+
+				if(nonce == 0)
+				{
+					break;
+				}
+			}
+			free(nonce_hex);
+			correction_times++;
+		}
+
+#if ROCKMINER_PRINT_DEBUG
+			if(correction_times > 0 )
+			{
+				if (correction_times < NONCE_CORRECTION_TIMES)
+				applog(LOG_WARNING, "Rockminer correction the Golden nonce success %s%d[%d]=%d",icarus->drv->name, icarus->device_id,chip_no,correction_times);
+				else
+				applog(LOG_WARNING, "Rockminer correction the Golden nonce fail %s%d[%d]=%d",icarus->drv->name, icarus->device_id,chip_no,correction_times);
+			}
+#endif
+
+	}
+
+	if (!ok)
+		goto unshin;
+	applog(LOG_DEBUG, "Icarus Detect: Test succeeded at %s: got %s",
+	       icarus->device_path, golden_nonce);
+
+	/* We have a real Rockminer! */
+	if (!add_cgpu(icarus))
+		goto unshin;
+
+	icarus->drv->scanwork = rock_scanwork;
+	icarus->drv->dname = "Rockminer";
+	icarus->drv->thread_prepare = &rock_prepare;
+	icarus->drv->get_statline_before = &rock_statline_before;
+
+	applog(LOG_INFO, "%s%d: Found at %s",
+		icarus->drv->name, icarus->device_id, icarus->device_path);
+
+	timersub(&tv_finish, &tv_start, &(info->golden_tv));
+
+	return icarus;
+
+unshin:
+
+	usb_uninit(icarus);
+	free(info);
+	icarus->device_data = NULL;
+
+shin:
+
+	icarus = usb_free_cgpu(icarus);
+
+	return NULL;
+}
+
 static void icarus_detect(bool __maybe_unused hotplug)
 {
+	usb_detect(&icarus_drv, rock_detect_one);
 	usb_detect(&icarus_drv, icarus_detect_one);
 }
 
@@ -1269,6 +1649,109 @@ static void cmr2_commands(struct cgpu_info *icarus)
 	}
 }
 
+void rock_send_task(unsigned char chip_no, unsigned int current_task_id, struct thr_info *thr)
+{
+	struct cgpu_info *icarus = thr->cgpu;
+	struct ICARUS_INFO *info = (struct ICARUS_INFO *)(icarus->device_data);
+	int err, amount;
+	struct ICARUS_WORK workdata;
+	char *ob_hex;
+	struct work *work = NULL;
+	int dev_id = icarus->device_id;
+
+#if ROCKMINER_PRINT_DEBUG
+	applog(LOG_WARNING, "thr_info id:%d, device_thread:%d, icarus cgminer_id: %d, device_id: %d.", thr->id, thr->device_thread, icarus->cgminer_id, icarus->device_id);
+	applog(LOG_WARNING, "::::::::::::::g_work[%d][%d][%d] = 0x%x", dev_id, chip_no, current_task_id, (int)g_work[dev_id][chip_no][current_task_id]);
+#endif
+	if (g_work[dev_id][chip_no][current_task_id] == NULL)
+	{
+		work = get_work(thr, thr->id);
+		if (work == NULL)
+		{
+			return;
+		}
+		g_work[dev_id][chip_no][current_task_id] = work;
+	}
+	else
+	{
+		work = g_work[dev_id][chip_no][current_task_id];
+#if ROCKMINER_PRINT_DEBUG
+		applog(LOG_WARNING, "::resend work");
+#endif
+	}
+
+#if ROCKMINER_PRINT_DEBUG
+	//if(chip_no == 7)
+	applog(LOG_WARNING, "::::::::::::::g_work[%d][%d][%d] = 0x%x", dev_id, chip_no, current_task_id, (int)g_work[dev_id][chip_no][current_task_id]);
+#endif
+
+	memset((void *)(&workdata), 0, sizeof(workdata));
+	memcpy(&(workdata.midstate), work->midstate, ICARUS_MIDSTATE_SIZE);
+	memcpy(&(workdata.work), work->data + ICARUS_WORK_DATA_OFFSET, ICARUS_WORK_SIZE);
+	workdata.unused[ICARUS_UNUSED_SIZE - 4] = 0xaa;
+	if((rmdev[dev_id].chip[chip_no].freq>(rmdev[dev_id].max_frq/10-1))||(rmdev[dev_id].chip[chip_no].freq<(rmdev[dev_id].min_frq/10-1)))
+	{
+		rock_init_last_received_task_complete_time(dev_id);
+	}
+	workdata.unused[ICARUS_UNUSED_SIZE - 3] = rmdev[dev_id].chip[chip_no].freq; //icarus->freq/10 - 1; ;
+	workdata.unused[ICARUS_UNUSED_SIZE - 2] = chip_no ;
+	workdata.unused[ICARUS_UNUSED_SIZE - 1] = 0x55;
+
+	opt_debug = ROCKMINER_PRINT_DEBUG;
+	if (opt_debug) {
+		ob_hex = bin2hex((void *)(work->data), 128);
+		applog(LOG_WARNING, "%s%d: work->data %s",
+			icarus->drv->name, icarus->device_id, ob_hex);
+		free(ob_hex);
+	}
+
+#ifndef ROCKMINER
+	rev((void *)(&(workdata.midstate)), ICARUS_MIDSTATE_SIZE);
+	rev((void *)(&(workdata.work)), ICARUS_WORK_SIZE);
+
+	if (info->speed_next_work || info->flash_next_work)
+		//cmr2_commands(icarus);
+#endif
+
+	// We only want results for the work we are about to send
+	usb_buffer_clear(icarus);
+
+
+	err = usb_write_ii(icarus, info->intinfo, (char *)(&workdata), sizeof(workdata), &amount, C_SENDWORK);
+
+	if (err < 0 || amount != sizeof(workdata)) {
+		applog(LOG_ERR, "%s%i: Comms error (werr=%d amt=%d)",
+				icarus->drv->name, icarus->device_id, err, amount);
+		dev_error(icarus, REASON_DEV_COMMS_ERROR);
+		icarus_initialise(icarus, info->baud);
+
+		if(g_work[dev_id][chip_no][current_task_id])
+		{
+			free_work(g_work[dev_id][chip_no][current_task_id]);
+			g_work[dev_id][chip_no][current_task_id] = NULL;
+		}
+
+		return;
+	}
+
+	opt_debug = ROCKMINER_PRINT_DEBUG;
+	if (opt_debug) {
+		ob_hex = bin2hex((void *)(&workdata), sizeof(workdata));
+		applog(LOG_WARNING, "%s%d: sent %s",
+			icarus->drv->name, icarus->device_id, ob_hex);
+		free(ob_hex);
+
+        rev((void *)(&(workdata.midstate)), ICARUS_MIDSTATE_SIZE);
+    	rev((void *)(&(workdata.work)), ICARUS_WORK_SIZE);
+    	ob_hex = bin2hex((void *)(&workdata), sizeof(workdata));
+    	applog(LOG_WARNING, "%s%d: revert sent %s",
+    		icarus->drv->name, icarus->device_id, ob_hex);
+    	free(ob_hex);
+	}
+
+	return;
+}
+
 static int64_t icarus_scanwork(struct thr_info *thr)
 {
 	struct cgpu_info *icarus = thr->cgpu;
@@ -1523,6 +2006,293 @@ out:
 	return hash_count;
 }
 
+static int64_t rock_scanwork(struct thr_info *thr)
+{
+	struct cgpu_info *icarus = thr->cgpu;
+	struct ICARUS_INFO *info = (struct ICARUS_INFO *)(icarus->device_data);
+	int ret;
+	unsigned char nonce_bin[ICARUS_BUF_SIZE];
+	uint32_t nonce;
+	int64_t hash_count = 0;
+	struct timeval tv_start, tv_finish, elapsed;
+	struct work *work = NULL;
+
+	int64_t estimate_hashes;
+	int correction_times = 0;
+#if (NONCE_CORRECTION_TIMES == 9)
+	int32_t correction_value[] = {0, 1, -1, 2, -2, 3, -3, 4, -4};
+#endif
+#if (NONCE_CORRECTION_TIMES == 3)
+	int32_t correction_value[] = {0, 1, -1};
+#endif
+	NONCE_DATA nonce_data;
+
+	int chip_no = 0;
+	time_t recv_time = 0;
+	//unsigned int task_no = 0;
+	//	int cmd_value = 0;
+	int dev_id = icarus->device_id;
+	//unsigned char work_state;
+
+	if (unlikely(share_work_tdiff(icarus) > info->fail_time)) {
+		if (info->failing) {
+			if (share_work_tdiff(icarus) > info->fail_time + 60) {
+				applog(LOG_ERR, "%s %d: Device failed to respond to restart",
+				       icarus->drv->name, icarus->device_id);
+				usb_nodev(icarus);
+				return -1;
+			}
+		} else {
+			applog(LOG_WARNING, "%s %d: No valid hashes for over %d secs, attempting to reset",
+			       icarus->drv->name, icarus->device_id, info->fail_time);
+			usb_reset(icarus);
+			info->failing = true;
+		}
+	}
+
+	// Device is gone
+	if (icarus->usbinfo.nodev)
+		return -1;
+
+	elapsed.tv_sec = elapsed.tv_usec = 0;
+
+
+	for (chip_no = 0; chip_no < rmdev[dev_id].chip_max; chip_no++)
+	{
+		recv_time = time(NULL);
+		if (recv_time > rmdev[dev_id].chip[chip_no].last_received_task_complete_time + 1)
+		{
+#if NONCE_TEST
+			applog(LOG_WARNING, ":::chip_no error = %d nonce timeout", chip_no);
+#endif
+			rmdev[dev_id].chip[chip_no].last_received_task_complete_time = recv_time;
+			rock_send_task(chip_no, 0,thr);
+			break;
+		}
+	}
+
+	/* Icarus will return 4 bytes (ICARUS_READ_SIZE) nonces or nothing */
+	memset(nonce_bin, 0, sizeof(nonce_bin));
+	ret = icarus_get_nonce(icarus, nonce_bin, &tv_start, &tv_finish, thr, 3000);//info->read_time);
+#if ROCKMINER_PRINT_DEBUG
+	applog(LOG_WARNING, "Rockminer nonce_bin: ret = %d. %02X, %02X, %02X, %02X, %02X, %02X, %02X, %02X", ret, nonce_bin[0], nonce_bin[1], nonce_bin[2], nonce_bin[3], nonce_bin[4], nonce_bin[5], nonce_bin[6], nonce_bin[7]);
+#endif
+	if((nonce_bin[NONCE_CHIP_NO_OFFSET]&RM_PRODUCT_MASK)==RM_PRODUCT_T1)
+		{
+			rmdev[dev_id].product_id = ROCKMINER_T1;
+			rmdev[dev_id].chip_max = 24;
+			rmdev[dev_id].min_frq = 200;
+			rmdev[dev_id].def_frq = 280;
+			rmdev[dev_id].max_frq = 320;
+		}
+		else
+		{
+			rmdev[dev_id].product_id= ROCKMINER_RBOX;
+			rmdev[dev_id].chip_max = 4;
+			rmdev[dev_id].min_frq = 200;
+			rmdev[dev_id].def_frq = 270;
+			rmdev[dev_id].max_frq = 290;
+		}
+	nonce_data.chip_no = nonce_bin[NONCE_CHIP_NO_OFFSET]&RM_CHIP_MASK;
+	if(nonce_data.chip_no>=rmdev[dev_id].chip_max)
+		nonce_data.chip_no=0;
+	nonce_data.task_no = nonce_bin[NONCE_TASK_NO_OFFSET]>=2?0:nonce_bin[NONCE_TASK_NO_OFFSET];
+	nonce_data.cmd_value = nonce_bin[NONCE_TASK_CMD_OFFSET]&RM_CMD_MASK;
+	nonce_data.work_state = nonce_bin[NONCE_TASK_CMD_OFFSET]&RM_STATUS_MASK;
+#if ROCKMINER_PRINT_DEBUG
+	if(nonce_data.work_state == 2)
+		applog(LOG_WARNING, "Temperature of Device is too hign to work!");
+#endif
+
+	icarus->temp = (double)nonce_bin[NONCE_COMMAND_OFFSET];
+	if (icarus->temp == 128)
+		icarus->temp = 0;
+
+	if (nonce_data.cmd_value == NONCE_TASK_COMPLETE_CMD)
+	{
+		rmdev[dev_id].chip[nonce_data.chip_no].last_received_task_complete_time = time(NULL);
+
+		if (g_work[dev_id][nonce_data.chip_no][nonce_data.task_no])
+		{
+			free_work(g_work[dev_id][nonce_data.chip_no][nonce_data.task_no]);
+			g_work[dev_id][nonce_data.chip_no][nonce_data.task_no] = NULL;
+		}
+#ifdef NONCE_TEST// ROCKMINER_PRINT_DEBUG
+			chip_work_conunts[nonce_data.chip_no] ++;
+#endif
+
+		goto out;
+	}
+
+	if (nonce_data.cmd_value == NONCE_GET_TASK_CMD)
+	{
+		rock_send_task(nonce_data.chip_no, nonce_data.task_no, thr);
+		goto out;
+	}
+
+	if (ret == ICA_NONCE_TIMEOUT)
+	{
+#if ROCKMINER_PRINT_DEBUG
+		applog(LOG_WARNING, "chip_no = %d nonce timeout, ret = %d", nonce_data.chip_no, ret);
+#endif
+		rock_send_task(nonce_data.chip_no, nonce_data.task_no, thr);
+	}
+
+#if ROCKMINER_PRINT_DEBUG
+	applog(LOG_WARNING, "Rockminer chip_no: %d", nonce_data.chip_no);
+#endif
+
+	work = g_work[dev_id][nonce_data.chip_no][nonce_data.task_no];
+	if (work == NULL)
+	{
+		goto out;
+	}
+
+	if (ret == ICA_NONCE_ERROR)
+		goto out;
+
+	// aborted before becoming idle, get new work
+	if (ret == ICA_NONCE_TIMEOUT || ret == ICA_NONCE_RESTART) {
+		timersub(&tv_finish, &tv_start, &elapsed);
+
+		// ONLY up to just when it aborted
+		// We didn't read a reply so we don't subtract ICARUS_READ_TIME
+		estimate_hashes = ((double)(elapsed.tv_sec)
+					+ ((double)(elapsed.tv_usec))/((double)1000000)) / info->Hs;
+
+		// If some Serial-USB delay allowed the full nonce range to
+		// complete it can't have done more than a full nonce
+		if (unlikely(estimate_hashes > 0xffffffff))
+			estimate_hashes = 0xffffffff;
+
+		applog(LOG_DEBUG, "%s%d: no nonce = 0x%08lX hashes (%ld.%06lds)",
+				icarus->drv->name, icarus->device_id,
+				(long unsigned int)estimate_hashes,
+				(long)elapsed.tv_sec, (long)elapsed.tv_usec);
+
+		goto out;
+	}
+
+	memcpy((char *)&nonce, nonce_bin, ICARUS_READ_SIZE);
+	nonce = htobe32(nonce);
+#if  ROCKMINER_PRINT_DEBUG
+	applog(LOG_WARNING, "Rockminer nonce %s%d[%d/24]-%d: %08X",icarus->drv->name, icarus->device_id,nonce_data.chip_no,nonce_data.task_no, nonce);
+#endif
+
+#ifdef NONCE_TEST// ROCKMINER_PRINT_DEBUG
+	device_nonce_conunts[dev_id] ++;
+	chip_nonce_conunts[nonce_data.chip_no] ++;
+#endif
+
+	recv_time = time(NULL);
+	if((recv_time-rmdev[dev_id].dev_detect_time )>=60)//device_chip_max[device_id]
+		{
+		unsigned char i;
+		rmdev[dev_id].dev_detect_time  = recv_time;
+#ifdef NONCE_TEST// ROCKMINER_PRINT_DEBUG
+		applog(LOG_WARNING, "AMU%d Freq: %d0MHz/ %d0MHz/ %d0MHz/ %d0MHz ",dev_id,rmdev[dev_id].chip[0].freq+1,rmdev[dev_id].chip[1].freq+1,rmdev[dev_id].chip[2].freq+1,rmdev[dev_id].chip[3].freq+1);
+#endif
+			for (i = 0; i  < rmdev[dev_id].chip_max; i ++)
+			{
+#ifdef NONCE_TEST// ROCKMINER_PRINT_DEBUG
+			applog(LOG_WARNING, "AMU%d Chip[%d] nonce=%d/%d/%d,freq:%d0MHz, ",dev_id,i,rmdev[dev_id].chip[i].error_cnt,chip_nonce_conunts[i],chip_work_conunts[i],rmdev[dev_id].chip[i].freq+1);
+			chip_nonce_conunts[i] = 0;
+			chip_work_conunts[i] = 0;
+#endif
+			if(rmdev[dev_id].chip[i].error_cnt>=12)
+				{
+				if(rmdev[dev_id].chip[i].freq>rmdev[dev_id].min_frq)	//200Mhz
+					{
+					rmdev[dev_id].chip[i].freq --;
+#ifdef  NONCE_TEST
+				applog(LOG_WARNING, "AMU%d Chip[%d]=%d SUB FREQ TO %d0MHz,DEF(%fMHz) ",dev_id,i,rmdev[dev_id].chip[i].error_cnt,rmdev[dev_id].chip[i].freq+1,opt_rock_freq);
+#endif
+					}
+				}
+			else if(rmdev[dev_id].chip[i].error_cnt<=1)
+				{
+				if(rmdev[dev_id].chip[i].freq<(rmdev[dev_id].def_frq/10-1))
+					{
+					rmdev[dev_id].chip[i].freq ++;
+#ifdef  NONCE_TEST
+				applog(LOG_WARNING, "AMU%d Chip[%d]=%d ADD FREQ TO %d0MHz,DEF(%fMHz) ",dev_id,i,rmdev[dev_id].chip[i].error_cnt,rmdev[dev_id].chip[i].freq+1,opt_rock_freq);
+#endif
+					}
+				}
+			rmdev[dev_id].chip[i].error_cnt = 0;
+			}
+#ifdef NONCE_TEST// ROCKMINER_PRINT_DEBUG
+						device_nonce_corr_ok[dev_id] = 0;
+						device_nonce_corr_fail[dev_id] = 0;
+						device_nonce_corr_fail_2[dev_id] = 0;
+						device_nonce_conunts[dev_id] = 0;
+#endif
+
+		}
+
+	correction_times = 0;
+	while(correction_times<NONCE_CORRECTION_TIMES)
+	{
+		if (submit_nonce(thr, work, nonce + correction_value[correction_times]))
+		{
+			hash_count++;
+			info->failing = false;
+#if ROCKMINER_PRINT_DEBUG
+			applog(LOG_WARNING, "Rockminer nonce :::OK:::\r\n");
+#endif
+			break;
+		}
+		else
+		{
+#if ROCKMINER_PRINT_DEBUG
+			applog(LOG_WARNING, "Rockminer nonce error times = %d\r\n", correction_times);
+#endif
+			if(nonce == 0)
+			{
+				break;
+			}
+		}
+		correction_times++;
+	}
+
+	if(correction_times > 0 )
+	{
+
+	/* FIXME: Where is this i supposed to come from? Comment out instead */
+	//rmdev[dev_id].chip[i].error_cnt ++;
+	    if (correction_times < NONCE_CORRECTION_TIMES)
+	    	{
+
+#ifdef NONCE_TEST// ROCKMINER_PRINT_DEBUG
+	    		device_nonce_corr_ok[dev_id] ++;
+		//applog(LOG_WARNING, "Rockminer correction the nonce success %s%d[%d]=%d",icarus->drv->name, icarus->dev_id,chip_no,correction_times);
+#endif
+	    	}
+		else
+			{
+#ifdef NONCE_TEST// ROCKMINER_PRINT_DEBUG
+		device_nonce_corr_fail[dev_id] ++;
+#endif
+		//applog(LOG_WARNING, "Rockminer correction the nonce fail ---------%s%d[%d]=%d",icarus->drv->name, icarus->dev_id,chip_no,correction_times);
+			}
+
+	}
+
+	hash_count = (hash_count * info->nonce_mask);
+
+	if (opt_debug || info->do_icarus_timing)
+		timersub(&tv_finish, &tv_start, &elapsed);
+
+	applog(LOG_DEBUG, "%s%d: nonce = 0x%08x = 0x%08lX hashes (%ld.%06lds)",
+			icarus->drv->name, icarus->device_id,
+			nonce, (long unsigned int)hash_count,
+			(long)elapsed.tv_sec, (long)elapsed.tv_usec);
+
+out:
+
+	return hash_count;
+}
+
 static struct api_data *icarus_api_stats(struct cgpu_info *cgpu)
 {
 	struct api_data *root = NULL;
diff --git a/driver-minion.c b/driver-minion.c
index 0070a1f..960940a 100644
--- a/driver-minion.c
+++ b/driver-minion.c
@@ -24,6 +24,7 @@ static void minion_detect(__maybe_unused bool hotplug)
 #include <linux/spi/spidev.h>
 #include <sys/ioctl.h>
 #include <sys/stat.h>
+#include <sys/mman.h>
 #include <fcntl.h>
 #include <poll.h>
 
@@ -36,14 +37,87 @@ static void minion_detect(__maybe_unused bool hotplug)
 // The code is always in - this just decides if it does it
 static bool minreread = true;
 
+/*
+ * Use pins for board selection
+ * If disabled, it will test chips just as 'pin 0'
+ * but never do any gpio - the equivalent of the previous 'no pins' code
+ */
+static bool usepins = true;
+
+#define MINION_PAGE_SIZE 4096
+
+#define BCM2835_BASE 0x20000000
+#define BCM2835_GPIO_BASE (BCM2835_BASE + 0x200000)
+
+#define BCM2835_GPIO_SET0 0x001c // GPIO Pin Output Set 0
+#define BCM2835_GPIO_CLR0 0x0028 // GPIO Pin Output Clear 0
+
+#define BCM2835_GPIO_FSEL0 0x0000
+
+#define BCM2835_GPIO_FSEL_INPUT  0b000
+#define BCM2835_GPIO_FSEL_OUTPUT 0b001
+#define BCM2835_GPIO_FSEL_MASK   0b111
+
+
+#define BCM2835_PIN_HIGH 0x1
+#define BCM2835_PIN_LOW 0x0
+
+static const char *minion_memory = "/dev/mem";
+static int minion_memory_addr = BCM2835_GPIO_BASE;
+
 #define MINION_SPI_BUS 0
 #define MINION_SPI_CHIP 0
 
 //#define MINION_SPI_SPEED 2000000
-#define MINION_SPI_SPEED 1000000
+#define MINION_SPI_SPEED 8000000
 #define MINION_SPI_BUFSIZ 1024
 
-#define MINION_CHIPS 32
+static struct minion_select_pins {
+	int pin;
+	int wpi;
+	char *name;
+	int bcm; // this is what we use
+} minionPins[] = {
+	{	24,	10,	"CE0",		8,	},
+	{	26,	11,	"CE1",		7,	},
+	{	16,	4,	"GPIO4",	23,	},
+	{	22,	6,	"GPIO6",	25,	},
+	{	12,	1,	"GPIO1",	18,	},
+	{	18,	5,	"GPIO5",	24,	},
+	{	11,	0,	"GPIO0",	17,	},
+	{	13,	2,	"GPIO2",	27,	},
+	{	15,	3,	"GPIO3",	22,	},
+	{	7,	7,	"GPIO7",	4,	}
+
+/* The rest on the RPi
+	{	3,	8,	"SDA",		2,	}
+	{	5,	9,	"SCL",		3,	}
+	{	19,	12,	"MOSI",		10,	}
+	{	21,	13,	"MISO",		9,	}
+	{	23,	14,	"SCLK",		11,	}
+	{	8,	15,	"TxD",		14,	}
+	{	10,	16,	"RxD",		15,	}
+*/
+};
+
+/*
+ * uS delays for GPIO pin access
+ */
+#define MINION_PIN_BEFORE cgsleep_us(33)
+#define MINION_PIN_SLEEP cgsleep_us(133)
+#define MINION_PIN_AFTER
+
+#define MINION_PIN_COUNT (sizeof(minionPins)/ \
+			  sizeof(struct minion_select_pins))
+
+#define CHIP_PIN(_chip) (minioninfo->chip_pin[_chip])
+
+#define MINION_MIN_CHIP 0
+#define MINION_MAX_CHIP 10
+
+#define MINION_CHIP_PER_PIN (1 + MINION_MAX_CHIP - MINION_MIN_CHIP)
+
+#define MINION_CHIPS (MINION_PIN_COUNT * MINION_CHIP_PER_PIN)
 #define MINION_CORES 99
 #define FAKE_CORE MINION_CORES
 
@@ -239,7 +313,7 @@ static const char *min_temp_invalid = "?";
 		} while (0)
 
 struct minion_header {
-	uint8_t chip;
+	uint8_t chipid;
 	uint8_t reg;
 	uint8_t siz[2];
 	uint8_t data[4]; // placeholder
@@ -336,7 +410,7 @@ struct minion_status {
 #define FIFO_CMD(_fifo, _off) ((_fifo)[(_off) + 1])
 
 #define RES_GOLD(_res) ((((_res)->status[3]) & 0x80) == 0)
-#define RES_CHIP(_res) (((_res)->status[3]) & 0x1f)
+#define RES_CHIPID(_res) (((_res)->status[3]) & 0x1f)
 #define RES_CORE(_res) ((_res)->status[2])
 #define RES_TASK(_res) ((int)((_res)->status[1]) * 0x100 + (int)((_res)->status[0]))
 #define RES_NONCE(_res) u8tou32((_res)->nonce, 0)
@@ -607,17 +681,22 @@ struct minion_info {
 	cgsem_t nonce_ready;
 	cgsem_t scan_work;
 
+	volatile unsigned *gpio;
+
 	int spifd;
 	char gpiointvalue[64];
 	int gpiointfd;
 
 	// TODO: need to track disabled chips - done?
 	int chips;
-	bool chip[MINION_CHIPS];
+	bool has_chip[MINION_CHIPS];
 	int init_freq[MINION_CHIPS];
 	int init_temp[MINION_CHIPS];
 	uint8_t init_cores[MINION_CHIPS][DATA_SIZ*MINION_CORE_REPS];
 
+	uint8_t chipid[MINION_CHIPS]; // Chip Number
+	int chip_pin[MINION_CHIPS];
+
 	uint32_t next_task_id;
 
 	// Stats
@@ -893,19 +972,19 @@ static void display_ioctl(int reply, uint32_t osiz, uint8_t *obuf, uint32_t rsiz
 	}
 
 	if (reply < 0) {
-		applog(IOCTRL_LOG, "%s %s chip %d osiz %d%s%s",
+		applog(IOCTRL_LOG, "%s %s chipid %d osiz %d%s%s",
 				   name, dir, (int)obuf[0], (int)osiz, ex, buf);
 		applog(IOCTRL_LOG, "  reply was error %d", reply);
 	} else {
 		if (IS_ADDR_WRITE(obuf[1])) {
-			applog(IOCTRL_LOG, "%s %s chip %d osiz %d%s%s",
+			applog(IOCTRL_LOG, "%s %s chipid %d osiz %d%s%s",
 					   name, dir, (int)obuf[0], (int)osiz, ex, buf);
 			applog(IOCTRL_LOG, "  write ret was %d", reply);
 		} else {
 			switch (obuf[1]) {
 				case READ_ADDR(MINION_RES_DATA):
 					rescount = (int)((float)rsiz / (float)MINION_RES_DATA_SIZ);
-					applog(IOCTRL_LOG, "%s %s chip %d osiz %d%s%s",
+					applog(IOCTRL_LOG, "%s %s chipid %d osiz %d%s%s",
 							   name, dir, (int)obuf[0], (int)osiz, ex, buf);
 					for (i = 0; i < rescount; i++) {
 						res = (struct minion_result *)(rbuf + osiz - rsiz + (i * MINION_RES_DATA_SIZ));
@@ -914,10 +993,10 @@ static void display_ioctl(int reply, uint32_t osiz, uint8_t *obuf, uint32_t rsiz
 						} else {
 							__bin2hex(buf, res->nonce, DATA_SIZ);
 							applog(IOCTRL_LOG, "  %s reply %d of %d %d(%d) was task 0x%04x"
-										   " chip %d core %d gold %s nonce 0x%s",
+										   " chipid %d core %d gold %s nonce 0x%s",
 									   name, i+1, rescount, reply, rsiz,
 									   RES_TASK(res),
-									   (int)RES_CHIP(res),
+									   (int)RES_CHIPID(res),
 									   (int)RES_CORE(res),
 									   (int)RES_GOLD(res) ? "Y" : "N",
 									   buf);
@@ -927,7 +1006,7 @@ static void display_ioctl(int reply, uint32_t osiz, uint8_t *obuf, uint32_t rsiz
 				case READ_ADDR(MINION_SYS_CHIP_SIG):
 				case READ_ADDR(MINION_SYS_CHIP_STA):
 				default:
-					applog(IOCTRL_LOG, "%s %s chip %d osiz %d%s%s",
+					applog(IOCTRL_LOG, "%s %s chipid %d osiz %d%s%s",
 							   name, dir, (int)obuf[0], (int)osiz, ex, buf);
 					__bin2hex(buf, rbuf + osiz - rsiz, rsiz);
 					applog(IOCTRL_LOG, "  %s reply %d(%d) was %s", name, reply, rsiz, buf);
@@ -941,7 +1020,35 @@ static void display_ioctl(int reply, uint32_t osiz, uint8_t *obuf, uint32_t rsiz
 #define MINION_UNEXPECTED_TASK -999
 #define MINION_OVERSIZE_TASK -998
 
-static int __do_ioctl(struct minion_info *minioninfo, uint8_t *obuf, uint32_t osiz, uint8_t *rbuf, uint32_t rsiz, MINION_FFL_ARGS)
+static void set_pin(struct minion_info *minioninfo, int pin, bool on)
+{
+	volatile uint32_t *paddr;
+	uint32_t value;
+	int bcm;
+
+	bcm = minionPins[pin].bcm;
+
+	paddr = minioninfo->gpio + ((on ? BCM2835_GPIO_SET0 : BCM2835_GPIO_CLR0) / 4) + (bcm / 10);
+
+	value = 1 << (bcm % 32);
+
+	*paddr = value;
+	*paddr = value;
+}
+
+static void init_pins(struct minion_info *minioninfo)
+{
+	int pin;
+
+	// Initialise all pins high as required
+	MINION_PIN_BEFORE;
+	for (pin = 0; pin < (int)MINION_PIN_COUNT; pin++) {
+		set_pin(minioninfo, pin, true);
+		MINION_PIN_SLEEP;
+	}
+}
+
+static int __do_ioctl(struct minion_info *minioninfo, int pin, uint8_t *obuf, uint32_t osiz, uint8_t *rbuf, uint32_t rsiz, MINION_FFL_ARGS)
 {
 	struct spi_ioc_transfer tran;
 	int ret;
@@ -970,8 +1077,8 @@ static int __do_ioctl(struct minion_info *minioninfo, uint8_t *obuf, uint32_t os
 	memcpy(&dataw[DATA_OFF], &obuf[0], osiz);
 
 	char *buf = bin2hex((unsigned char *)&(dataw[DATA_OFF]), osiz);
-	applog(IOCTRL_LOG, "*** %s() sending %02x %02x %s %02x %02x",
-			   __func__,
+	applog(IOCTRL_LOG, "*** %s() pin %d cid %d sending %02x %02x %s %02x %02x",
+			   __func__, pin, (int)(dataw[DATA_OFF]),
 			   dataw[0], dataw[DATA_OFF-1], buf,
 			   dataw[DATA_OFF+osiz], dataw[DATA_ALL-1]);
 	free(buf);
@@ -1001,9 +1108,20 @@ static int __do_ioctl(struct minion_info *minioninfo, uint8_t *obuf, uint32_t os
 
 	IO_STAT_NOW(&lsta);
 	mutex_lock(&(minioninfo->spi_lock));
+	if (usepins) {
+		// Pin low for I/O
+		MINION_PIN_BEFORE;
+		set_pin(minioninfo, pin, false);
+		MINION_PIN_SLEEP;
+	}
 	IO_STAT_NOW(&sta);
 	ret = ioctl(minioninfo->spifd, SPI_IOC_MESSAGE(1), (void *)&tran);
 	IO_STAT_NOW(&fin);
+	if (usepins) {
+		MINION_PIN_AFTER;
+		// Pin back high after I/O
+		set_pin(minioninfo, pin, true);
+	}
 	mutex_unlock(&(minioninfo->spi_lock));
 	IO_STAT_NOW(&lfin);
 	IO_STAT_NOW(&tsd);
@@ -1013,8 +1131,8 @@ static int __do_ioctl(struct minion_info *minioninfo, uint8_t *obuf, uint32_t os
 #if MINION_SHOW_IO
 	if (ret > 0) {
 		buf = bin2hex((unsigned char *)&(datar[DATA_OFF]), ret);
-		applog(IOCTRL_LOG, "*** %s() reply %d = %02x %02x %s %02x %02x",
-				   __func__, ret,
+		applog(IOCTRL_LOG, "*** %s() reply %d = pin %d cid %d %02x %02x %s %02x %02x",
+				   __func__, ret, pin, (int)(dataw[DATA_OFF]),
 				   datar[0], datar[DATA_OFF-1], buf,
 				   datar[DATA_OFF+osiz], datar[DATA_ALL-1]);
 		free(buf);
@@ -1030,11 +1148,11 @@ static int __do_ioctl(struct minion_info *minioninfo, uint8_t *obuf, uint32_t os
 }
 
 #if 1
-#define do_ioctl(_obuf, _osiz, _rbuf, _rsiz) __do_ioctl(minioninfo, _obuf, _osiz, _rbuf, _rsiz, MINION_FFL_HERE)
+#define do_ioctl(_pin, _obuf, _osiz, _rbuf, _rsiz) __do_ioctl(minioninfo, _pin, _obuf, _osiz, _rbuf, _rsiz, MINION_FFL_HERE)
 #else
-#define do_ioctl(_obuf, _osiz, _rbuf, _rsiz) _do_ioctl(minioninfo, _obuf, _osiz, _rbuf, _rsiz, MINION_FFL_HERE)
+#define do_ioctl(_pin, _obuf, _osiz, _rbuf, _rsiz) _do_ioctl(minioninfo, _pin, _obuf, _osiz, _rbuf, _rsiz, MINION_FFL_HERE)
 // This sends an expected to work, SPI command before each SPI command
-static int _do_ioctl(struct minion_info *minioninfo, uint8_t *obuf, uint32_t osiz, uint8_t *rbuf, uint32_t rsiz, MINION_FFL_ARGS)
+static int _do_ioctl(struct minion_info *minioninfo, int pin, uint8_t *obuf, uint32_t osiz, uint8_t *rbuf, uint32_t rsiz, MINION_FFL_ARGS)
 {
 	struct minion_header *head;
 	uint8_t buf1[MINION_BUFSIZ];
@@ -1042,13 +1160,13 @@ static int _do_ioctl(struct minion_info *minioninfo, uint8_t *obuf, uint32_t osi
 	uint32_t siz;
 
 	head = (struct minion_header *)buf1;
-	head->chip = 1; // Needs to be set to a valid chip
+	head->chipid = 1; // Needs to be set to a valid chip
 	head->reg = READ_ADDR(MINION_SYS_FIFO_STA);
 	SET_HEAD_SIZ(head, DATA_SIZ);
 	siz = HSIZE() + DATA_SIZ;
-	__do_ioctl(minioninfo, buf1, siz, buf2, MINION_CORE_SIZ, MINION_FFL_PASS);
+	__do_ioctl(minioninfo, pin, buf1, siz, buf2, MINION_CORE_SIZ, MINION_FFL_PASS);
 
-	return __do_ioctl(minioninfo, obuf, osiz, rbuf, rsiz, MINION_FFL_PASS);
+	return __do_ioctl(minioninfo, pin, obuf, osiz, rbuf, rsiz, MINION_FFL_PASS);
 }
 #endif
 
@@ -1057,7 +1175,7 @@ static bool _minion_txrx(struct cgpu_info *minioncgpu, struct minion_info *minio
 	struct minion_header *head;
 
 	head = (struct minion_header *)(task->obuf);
-	head->chip = task->chip;
+	head->chipid = minioninfo->chipid[task->chip];
 	if (task->write)
 		SET_HEAD_WRITE(head, task->address);
 	else
@@ -1069,7 +1187,7 @@ static bool _minion_txrx(struct cgpu_info *minioncgpu, struct minion_info *minio
 		memcpy(&(head->data[0]), task->wbuf, task->wsiz);
 	task->osiz = HSIZE() + task->wsiz + task->rsiz;
 
-	task->reply = do_ioctl(task->obuf, task->osiz, task->rbuf, task->rsiz);
+	task->reply = do_ioctl(CHIP_PIN(task->chip), task->obuf, task->osiz, task->rbuf, task->rsiz);
 	if (task->reply < 0) {
 		applog(LOG_ERR, "%s%d: chip=%d ioctl failed reply=%d err=%d" MINION_FFL,
 				minioncgpu->drv->name, minioncgpu->device_id,
@@ -1092,7 +1210,7 @@ static int build_cmd(struct cgpu_info *minioncgpu, struct minion_info *minioninf
 	int reply;
 
 	head = (struct minion_header *)wbuf;
-	head->chip = chip;
+	head->chipid = minioninfo->chipid[chip];
 	head->reg = reg;
 	SET_HEAD_SIZ(head, DATA_SIZ);
 
@@ -1102,7 +1220,7 @@ static int build_cmd(struct cgpu_info *minioncgpu, struct minion_info *minioninf
 	head->data[3] = data[3];
 
 	wsiz = HSIZE() + DATA_SIZ;
-	reply = do_ioctl(wbuf, wsiz, rbuf, rsiz);
+	reply = do_ioctl(CHIP_PIN(chip), wbuf, wsiz, rbuf, rsiz);
 
 	if (reply != (int)wsiz) {
 		applog(LOG_ERR, "%s: chip %d %s returned %d (should be %d)",
@@ -1350,71 +1468,90 @@ static void enable_interrupt(struct cgpu_info *minioncgpu, struct minion_info *m
 }
 #endif
 
-// Simple detect - just check each chip for the signature
-static void minion_detect_chips(struct cgpu_info *minioncgpu, struct minion_info *minioninfo)
+static void minion_detect_one(struct cgpu_info *minioncgpu, struct minion_info *minioninfo, int pin, int chipid)
 {
 	struct minion_header *head;
 	uint8_t wbuf[MINION_BUFSIZ];
 	uint8_t rbuf[MINION_BUFSIZ];
 	uint32_t wsiz, rsiz;
-	int chip, reply, tries;
+	int reply, tries, newchip;
 	bool ok;
 
 	head = (struct minion_header *)wbuf;
+	head->chipid = chipid;
 	rsiz = MINION_SYS_SIZ;
 	SET_HEAD_READ(head, MINION_SYS_CHIP_SIG);
 	SET_HEAD_SIZ(head, rsiz);
 	wsiz = HSIZE() + rsiz;
-	for (chip = 0; chip < MINION_CHIPS; chip++) {
-		head->chip = (uint8_t)chip;
-		tries = 0;
-		ok = false;
-		do {
-			reply = do_ioctl(wbuf, wsiz, rbuf, rsiz);
-
-			if (reply == (int)(wsiz)) {
-				uint32_t sig = u8tou32(rbuf, wsiz - rsiz);
-
-				if (sig == MINION_CHIP_SIG) {
-					minioninfo->chip[chip] = true;
-					minioninfo->chips++;
-					ok = true;
+
+	tries = 0;
+	ok = false;
+	do {
+		reply = do_ioctl(pin, wbuf, wsiz, rbuf, rsiz);
+
+		if (reply == (int)(wsiz)) {
+			uint32_t sig = u8tou32(rbuf, wsiz - rsiz);
+
+			if (sig == MINION_CHIP_SIG) {
+				newchip = (minioninfo->chips)++;
+				minioninfo->has_chip[newchip] = true;
+				minioninfo->chipid[newchip] = chipid;
+				minioninfo->chip_pin[newchip] = pin;
+				ok = true;
+			} else {
+				if (sig == MINION_CHIP_SIG_SHIFT1 ||
+				    sig == MINION_CHIP_SIG_SHIFT2 ||
+				    sig == MINION_CHIP_SIG_SHIFT3 ||
+				    sig == MINION_CHIP_SIG_SHIFT4) {
+					applog(LOG_WARNING, "%s: pin %d chipid %d detect offset got"
+							    " 0x%08x wanted 0x%08x",
+							    minioncgpu->drv->dname, pin, chipid,
+							    sig, MINION_CHIP_SIG);
 				} else {
-					if (sig == MINION_CHIP_SIG_SHIFT1 ||
-					    sig == MINION_CHIP_SIG_SHIFT2 ||
-					    sig == MINION_CHIP_SIG_SHIFT3 ||
-					    sig == MINION_CHIP_SIG_SHIFT4) {
-						applog(LOG_WARNING, "%s: chip %d detect offset got"
-								    " 0x%08x wanted 0x%08x",
-								    minioncgpu->drv->dname, chip, sig,
-								    MINION_CHIP_SIG);
-					} else {
-						if (sig == MINION_NOCHIP_SIG ||
-						    sig == MINION_NOCHIP_SIG2) // Assume no chip
-							ok = true;
-						else {
-							applog(LOG_ERR, "%s: chip %d detect failed got"
-									" 0x%08x wanted 0x%08x",
-									minioncgpu->drv->dname, chip, sig,
-									MINION_CHIP_SIG);
-						}
+					if (sig == MINION_NOCHIP_SIG ||
+					    sig == MINION_NOCHIP_SIG2) // Assume no chip
+						ok = true;
+					else {
+						applog(LOG_ERR, "%s: pin %d chipid %d detect failed"
+								" got 0x%08x wanted 0x%08x",
+								minioncgpu->drv->dname, pin,
+								chipid, sig, MINION_CHIP_SIG);
 					}
 				}
-			} else {
-				applog(LOG_ERR, "%s: chip %d reply %d ignored should be %d",
-						minioncgpu->drv->dname, chip, reply, (int)(wsiz));
 			}
-		} while (!ok && ++tries <= MINION_SIG_TRIES);
+		} else {
+			applog(LOG_ERR, "%s: pin %d chipid %d reply %d ignored should be %d",
+					minioncgpu->drv->dname, pin, chipid, reply, (int)(wsiz));
+		}
+	} while (!ok && ++tries <= MINION_SIG_TRIES);
+
+	if (!ok) {
+		applog(LOG_ERR, "%s: pin %d chipid %d - detect failure status",
+				minioncgpu->drv->dname, pin, chipid);
+	}
+}
+
+// Simple detect - just check each chip for the signature
+static void minion_detect_chips(struct cgpu_info *minioncgpu, struct minion_info *minioninfo)
+{
+	int pin, chipid, chip;
+	int pinend;
 
-		if (!ok) {
-			applog(LOG_ERR, "%s: chip %d - detect failure status",
-					minioncgpu->drv->dname, chip);
+	if (usepins) {
+		init_pins(minioninfo);
+		pinend = (int)MINION_PIN_COUNT;
+	} else
+		pinend = 1;
+
+	for (pin = 0; pin < pinend; pin++) {
+		for (chipid = MINION_MIN_CHIP; chipid <= MINION_MAX_CHIP; chipid++) {
+			minion_detect_one(minioncgpu, minioninfo, pin, chipid);
 		}
 	}
 
 	if (minioninfo->chips) {
-		for (chip = 0; chip < MINION_CHIPS; chip++) {
-			if (minioninfo->chip[chip]) {
+		for (chip = 0; chip < (int)MINION_CHIPS; chip++) {
+			if (minioninfo->has_chip[chip]) {
 				init_chip(minioncgpu, minioninfo, chip);
 				enable_chip_cores(minioncgpu, minioninfo, chip);
 			}
@@ -1423,7 +1560,7 @@ static void minion_detect_chips(struct cgpu_info *minioncgpu, struct minion_info
 #if ENABLE_INT_NONO
 		// After everything is ready
 		for (chip = 0; chip < MINION_CHIPS; chip++)
-			if (minioninfo->chip[chip])
+			if (minioninfo->has_chip[chip])
 				enable_interrupt(minioncgpu, minioninfo, chip);
 #endif
 	}
@@ -1502,6 +1639,62 @@ bad_out:
 	return false;
 }
 
+static bool minion_setup_chip_select(struct cgpu_info *minioncgpu, struct minion_info *minioninfo)
+{
+	volatile uint32_t *paddr;
+	uint32_t mask, value, mem;
+	int count, memfd, pin, bcm;
+
+	memfd = open(minion_memory, O_RDWR | O_SYNC);
+	if (memfd < 0) {
+		applog(LOG_ERR, "%s: failed open %s (%d)",
+				minioncgpu->drv->dname,
+				minion_memory, errno);
+		return false;
+	}
+
+	minioninfo->gpio = (volatile unsigned *)mmap(NULL, MINION_PAGE_SIZE,
+						  PROT_READ | PROT_WRITE,
+						  MAP_SHARED, memfd,
+						  minion_memory_addr);
+	if (minioninfo->gpio == MAP_FAILED) {
+		close(memfd);
+		applog(LOG_ERR, "%s: failed mmap gpio (%d)",
+				minioncgpu->drv->dname,
+				errno);
+		return false;
+	}
+
+	close(memfd);
+
+	for (pin = 0; pin < (int)MINION_PIN_COUNT; pin++) {
+		bcm = minionPins[pin].bcm;
+
+		paddr = minioninfo->gpio + (BCM2835_GPIO_FSEL0 / 4) + (bcm / 10);
+
+		// Set each pin to be an output pin
+		mask = BCM2835_GPIO_FSEL_MASK << ((bcm % 10) * 3);
+		value = BCM2835_GPIO_FSEL_OUTPUT << ((bcm % 10) * 3);
+
+		// Read settings
+		mem = *paddr;
+		*paddr;
+
+		mem = (mem & ~mask) | (value & mask);
+
+		// Write appended setting
+		*paddr = mem;
+		*paddr = mem;
+
+		count++;
+	}
+
+	if (count == 0)
+		return false;
+	else
+		return true;
+}
+
 #if ENABLE_INT_NONO
 static bool minion_init_gpio_interrupt(struct cgpu_info *minioncgpu, struct minion_info *minioninfo)
 {
@@ -1686,7 +1879,7 @@ static void minion_process_options(struct minion_info *minioninfo)
 		if (comma)
 			*(comma++) = '\0';
 
-		for (i = 0; i < MINION_CHIPS; i++) {
+		for (i = 0; i < (int)MINION_CHIPS; i++) {
 			if (freq && isdigit(*freq)) {
 				last_freq = (int)(round((double)atoi(freq) / (double)MINION_FREQ_FACTOR)) * MINION_FREQ_FACTOR;
 				if (last_freq < MINION_FREQ_MIN)
@@ -1713,7 +1906,7 @@ static void minion_process_options(struct minion_info *minioninfo)
 		if (comma)
 			*(comma++) = '\0';
 
-		for (i = 0; i < MINION_CHIPS; i++) {
+		for (i = 0; i < (int)MINION_CHIPS; i++) {
 			if (temp) {
 				if (isdigit(*temp)) {
 					last_temp = atoi(temp);
@@ -1748,7 +1941,7 @@ static void minion_process_options(struct minion_info *minioninfo)
 		if (comma)
 			*(comma++) = '\0';
 
-		for (i = 0; i < MINION_CHIPS; i++) {
+		for (i = 0; i < (int)MINION_CHIPS; i++) {
 			// default to previous until we find valid data
 			cleared = false;
 			if (core) {
@@ -1841,16 +2034,21 @@ static void minion_detect(bool hotplug)
 		goto unalloc;
 #endif
 
+
+	if (usepins) {
+		if (!minion_setup_chip_select(minioncgpu, minioninfo))
+			goto unalloc;
+	}
+
 	mutex_init(&(minioninfo->spi_lock));
 	mutex_init(&(minioninfo->sta_lock));
 
-	for (i = 0; i < MINION_CHIPS; i++) {
+	for (i = 0; i < (int)MINION_CHIPS; i++) {
 		minioninfo->init_freq[i] = MINION_FREQ_DEF;
 		minioninfo->init_temp[i] = MINION_TEMP_CTL_DEF;
 		default_all_cores(&(minioninfo->init_cores[i][0]));
 	}
 
-
 	minion_process_options(minioninfo);
 
 	applog(LOG_WARNING, "%s: checking for chips ...", minioncgpu->drv->dname);
@@ -1858,10 +2056,11 @@ static void minion_detect(bool hotplug)
 	minion_detect_chips(minioncgpu, minioninfo);
 
 	buf[0] = '\0';
-	for (i = 0; i < MINION_CHIPS; i++) {
-		if (minioninfo->chip[i]) {
+	for (i = 0; i < (int)MINION_CHIPS; i++) {
+		if (minioninfo->has_chip[i]) {
 			off = strlen(buf);
-			snprintf(buf + off, sizeof(buf) - off, " %d", i);
+			snprintf(buf + off, sizeof(buf) - off, " %d:%d/%d",
+				 i, minioninfo->chip_pin[i], (int)(minioninfo->chipid[i]));
 		}
 	}
 
@@ -1880,7 +2079,7 @@ static void minion_detect(bool hotplug)
 	minioninfo->wfree_list = k_new_list("Work", sizeof(WITEM), ALLOC_WITEMS, LIMIT_WITEMS, true);
 	minioninfo->wwork_list = k_new_store(minioninfo->wfree_list);
 	// Initialise them all in case we later decide to enable chips
-	for (i = 0; i < MINION_CHIPS; i++) {
+	for (i = 0; i < (int)MINION_CHIPS; i++) {
 		minioninfo->wque_list[i] = k_new_store(minioninfo->wfree_list);
 		minioninfo->wchip_list[i] = k_new_store(minioninfo->wfree_list);
 	}
@@ -1894,7 +2093,7 @@ static void minion_detect(bool hotplug)
 
 	minioninfo->history_gen = MINION_MAX_RESET_CHECK;
 	minioninfo->hfree_list = k_new_list("History", sizeof(HITEM), ALLOC_HITEMS, LIMIT_HITEMS, true);
-	for (i = 0; i < MINION_CHIPS; i++)
+	for (i = 0; i < (int)MINION_CHIPS; i++)
 		minioninfo->hchip_list[i] = k_new_store(minioninfo->hfree_list);
 
 	cgsem_init(&(minioninfo->task_ready));
@@ -2224,8 +2423,8 @@ static void *minion_spi_reply(void *userdata)
 
 	somelow = false;
 	while (minioncgpu->shutdown == false) {
-		for (chip = 0; chip < MINION_CHIPS; chip++) {
-			if (minioninfo->chip[chip]) {
+		for (chip = 0; chip < (int)MINION_CHIPS; chip++) {
+			if (minioninfo->has_chip[chip]) {
 				int tries = 0;
 				uint8_t res, cmd;
 				while (++tries < 4) {
@@ -2394,15 +2593,15 @@ repeek:
 										minioninfo->use_res2[chip]++;
 									}
 
-									//DATAR(item)->chip = RES_CHIP(use1);
+									//DATAR(item)->chip = RES_CHIPID(use1);
 									// We can avoid any SPI transmission error of the chip number
 									DATAR(item)->chip = (uint8_t)chip;
-									if ((uint8_t)chip != RES_CHIP(use1)) {
+									if (minioninfo->chipid[chip] != RES_CHIPID(use1)) {
 										minioninfo->spi_errors++;
 										minioninfo->res_spi_errors[chip]++;
 										minioninfo->res_err_count[chip]++;
 									}
-									if (use2 && (uint8_t)chip != RES_CHIP(use2)) {
+									if (use2 && minioninfo->chipid[chip] != RES_CHIPID(use2)) {
 										minioninfo->spi_errors++;
 										minioninfo->res_spi_errors[chip]++;
 										minioninfo->res_err_count[chip]++;
@@ -2419,7 +2618,7 @@ repeek:
 										DATAR(item)->task_id2 = RES_TASK(use2);
 										DATAR(item)->nonce2 = RES_NONCE(use2);
 									}
-//applog(MINTASK_LOG, "%s%i: ZZZ reply task_id 0x%04x - chip %d - gold %d", minioncgpu->drv->name, minioncgpu->device_id, RES_TASK(use1), (int)RES_CHIP(use1), (int)RES_GOLD(use1));
+//applog(MINTASK_LOG, "%s%i: ZZZ reply task_id 0x%04x - chip %d - gold %d", minioncgpu->drv->name, minioncgpu->device_id, RES_TASK(use1), (int)RES_CHIPID(use1), (int)RES_GOLD(use1));
 
 //if (RES_GOLD(use1))
 //applog(MINTASK_LOG, "%s%i: found a result chip %d core %d task 0x%04x nonce 0x%08x gold=%d", minioncgpu->drv->name, minioncgpu->device_id, DATAR(item)->chip, DATAR(item)->core, DATAR(item)->task_id, DATAR(item)->nonce, (int)RES_GOLD(use1));
@@ -2480,11 +2679,11 @@ repeek:
 //					minioncgpu->device_id);
 
 			gotres = false;
-			for (chip = 0; chip < MINION_CHIPS; chip++) {
-				if (minioninfo->chip[chip]) {
+			for (chip = 0; chip < (int)MINION_CHIPS; chip++) {
+				if (minioninfo->has_chip[chip]) {
 					SET_HEAD_READ(head, MINION_SYS_INT_STA);
-					head->chip = chip;
-					reply = do_ioctl(wbuf, wsiz, rbuf, rsiz);
+					head->chipid = minioninfo->chipid[chip];
+					reply = do_ioctl(CHIP_PIN(chip), wbuf, wsiz, rbuf, rsiz);
 					if (reply != (int)wsiz) {
 						applog(LOG_ERR, "%s: chip %d int status returned %d"
 								" (should be %d)",
@@ -2629,7 +2828,7 @@ static enum nonce_state oknonce(struct thr_info *thr, struct cgpu_info *minioncg
 	bool redo;
 
 	// if the chip has been disabled - but we don't do that - so not possible (yet)
-	if (!(minioninfo->chip[chip])) {
+	if (!(minioninfo->has_chip[chip])) {
 		minioninfo->spi_errors++;
 		applog(MINTASK_LOG, "%s%i: nonce error chip %d not present",
 				    minioncgpu->drv->name, minioncgpu->device_id, chip);
@@ -2740,7 +2939,7 @@ retest:
 		item = k_unlink_head(minioninfo->hfree_list);
 		memcpy(&(DATAH(item)->when), when, sizeof(*when));
 		k_add_head(minioninfo->hchip_list[chip], item);
-		for (chip_tmp = 0; chip_tmp < MINION_CHIPS; chip_tmp++) {
+		for (chip_tmp = 0; chip_tmp < (int)MINION_CHIPS; chip_tmp++) {
 			tail = minioninfo->hchip_list[chip_tmp]->tail;
 			while (tail && tdiff(&(DATAH(tail)->when), &now) > MINION_HISTORY_s) {
 				tail = k_unlink_tail(minioninfo->hchip_list[chip_tmp]);
@@ -2815,6 +3014,9 @@ static void minion_flush_work(struct cgpu_info *minioncgpu)
 	K_ITEM *stale_unused_work, *prev_unused, *task, *prev_task, *witem;
 	int i;
 
+	if (minioninfo->initialised == false)
+		return;
+
 	applog(MINION_LOG, "%s%i: flushing work",
 				minioncgpu->drv->name, minioncgpu->device_id);
 
@@ -2853,8 +3055,8 @@ static void minion_flush_work(struct cgpu_info *minioncgpu)
 		}
 		task = prev_task;
 	}
-	for (i = 0; i < MINION_CHIPS; i++) {
-		if (minioninfo->chip[i]) {
+	for (i = 0; i < (int)MINION_CHIPS; i++) {
+		if (minioninfo->has_chip[i]) {
 			// TODO: consider sending it now rather than adding to the task list?
 			task = k_unlink_head(minioninfo->tfree_list);
 			DATAT(task)->tid = ++(minioninfo->next_tid);
@@ -3084,11 +3286,11 @@ static void minion_do_work(struct cgpu_info *minioncgpu)
 	for (state = 0; state < 3; state++) {
 #define CHP 0
 //applog(LOG_ERR, "%s%i: chip %d presta %d: quew %d chw %d", minioncgpu->drv->name, minioncgpu->device_id, CHP, state, minioninfo->chip_status[CHP].quework, minioninfo->chip_status[CHP].chipwork);
-		for (chip = 0; chip < MINION_CHIPS; chip++)
+		for (chip = 0; chip < (int)MINION_CHIPS; chip++)
 			minioninfo->chip_status[chip].tohigh = false;
 
-		for (chip = 0; chip < MINION_CHIPS; chip++) {
-			if (minioninfo->chip[chip] && !minioninfo->chip_status[chip].overheat) {
+		for (chip = 0; chip < (int)MINION_CHIPS; chip++) {
+			if (minioninfo->has_chip[chip] && !minioninfo->chip_status[chip].overheat) {
 				K_WLOCK(minioninfo->wchip_list[chip]);
 				count = minioninfo->chip_status[chip].quework +
 					minioninfo->chip_status[chip].realwork;
@@ -3171,7 +3373,7 @@ static void minion_do_work(struct cgpu_info *minioncgpu)
 						break;
 				}
 			} else
-				if (minioninfo->chip[chip] && minioninfo->chip_status[chip].overheat && state == 2)
+				if (minioninfo->has_chip[chip] && minioninfo->chip_status[chip].overheat && state == 2)
 					sys_chip_sta(minioncgpu, chip);
 		}
 	}
@@ -3249,8 +3451,8 @@ static void minion_shutdown(struct thr_info *thr)
 	applog(MINION_LOG, "%s%i: shutting down",
 				minioncgpu->drv->name, minioncgpu->device_id);
 
-	for (i = 0; i < MINION_CHIPS; i++)
-		if (minioninfo->chip[i])
+	for (i = 0; i < (int)MINION_CHIPS; i++)
+		if (minioninfo->has_chip[i])
 // TODO:		minion_shutdown(minioncgpu, minioninfo, i);
 			i = i;
 
@@ -3264,6 +3466,11 @@ static bool minion_queue_full(struct cgpu_info *minioncgpu)
 	int count, need, roll, roll_limit;
 	bool ret, rolled;
 
+	if (minioninfo->initialised == false) {
+		cgsleep_us(42);
+		return true;
+	}
+
 	K_RLOCK(minioninfo->wwork_list);
 	count = minioninfo->wwork_list->count;
 	K_RUNLOCK(minioninfo->wwork_list);
@@ -3310,8 +3517,8 @@ static void idle_report(struct cgpu_info *minioncgpu)
 	int msdiff;
 	int chip;
 
-	for (chip = 0; chip < MINION_CHIPS; chip++) {
-		if (minioninfo->chip[chip]) {
+	for (chip = 0; chip < (int)MINION_CHIPS; chip++) {
+		if (minioninfo->has_chip[chip]) {
 			idle = minioninfo->chip_status[chip].idle;
 			if (idle != minioninfo->chip_status[chip].last_rpt_idle) {
 				cgtime(&now);
@@ -3355,8 +3562,8 @@ static void chip_report(struct cgpu_info *minioncgpu)
 			res_err_msg[0] = '\0';
 			res_err_msg[1] = '\0';
 			K_RLOCK(minioninfo->hfree_list);
-			for (chip = 0; chip < MINION_CHIPS; chip++) {
-				if (minioninfo->chip[chip]) {
+			for (chip = 0; chip < (int)MINION_CHIPS; chip++) {
+				if (minioninfo->has_chip[chip]) {
 					len = strlen(buf);
 					if (minioninfo->hchip_list[chip]->count < 2)
 						ghs = 0.0;
@@ -3392,8 +3599,8 @@ static void chip_report(struct cgpu_info *minioncgpu)
 	msdiff = ms_tdiff(&now, &(minioninfo->chip_chk));
 	if (total_secs >= MINION_HISTORY_s && msdiff >= (minioninfo->history_gen * 1000)) {
 		K_RLOCK(minioninfo->hfree_list);
-		for (chip = 0; chip < MINION_CHIPS; chip++) {
-			if (minioninfo->chip[chip]) {
+		for (chip = 0; chip < (int)MINION_CHIPS; chip++) {
+			if (minioninfo->has_chip[chip]) {
 				if (minioninfo->hchip_list[chip]->count < 2)
 					ghs = 0.0;
 				else {
@@ -3411,8 +3618,8 @@ static void chip_report(struct cgpu_info *minioncgpu)
 		}
 		K_RUNLOCK(minioninfo->hfree_list);
 
-		for (chip = 0; chip < MINION_CHIPS; chip++) {
-			if (minioninfo->chip[chip]) {
+		for (chip = 0; chip < (int)MINION_CHIPS; chip++) {
+			if (minioninfo->has_chip[chip]) {
 				if (minioninfo->do_reset[chip] > 1.0) {
 					applog(LOG_WARNING, "%s%d: Chip %d down to threshold %.2fGHs - resetting ...",
 							    minioncgpu->drv->name, minioncgpu->device_id,
@@ -3433,6 +3640,9 @@ static int64_t minion_scanwork(__maybe_unused struct thr_info *thr)
 	struct minion_info *minioninfo = (struct minion_info *)(minioncgpu->device_data);
 	int64_t hashcount = 0;
 
+	if (minioninfo->initialised == false)
+		return hashcount;
+
 	minion_do_work(minioncgpu);
 
 	mutex_lock(&(minioninfo->nonce_lock));
@@ -3484,8 +3694,8 @@ static void minion_get_statline_before(char *buf, size_t bufsiz, struct cgpu_inf
 	max_temp = 0;
 	cores = 0;
 	mutex_lock(&(minioninfo->sta_lock));
-	for (chip = 0; chip < MINION_CHIPS; chip++) {
-		if (minioninfo->chip[chip]) {
+	for (chip = 0; chip < (int)MINION_CHIPS; chip++) {
+		if (minioninfo->has_chip[chip]) {
 			if (max_temp < minioninfo->chip_status[chip].temp)
 				max_temp = minioninfo->chip_status[chip].temp;
 			for (core = 0; core < MINION_CORES; core++) {
@@ -3521,12 +3731,19 @@ static struct api_data *minion_api_stats(struct cgpu_info *minioncgpu)
 	root = api_add_uint64(root, "Untested Nonces", &(minioninfo->untested_nonces), true);
 
 	root = api_add_int(root, "Chips", &(minioninfo->chips), true);
+	i = MINION_PIN_COUNT;
+	root = api_add_int(root, "GPIO Pins", &i, true);
 
 	max_chip = 0;
-	for (chip = 0; chip < MINION_CHIPS; chip++)
-		if (minioninfo->chip[chip]) {
+	for (chip = 0; chip < (int)MINION_CHIPS; chip++)
+		if (minioninfo->has_chip[chip]) {
 			max_chip = chip;
 
+			snprintf(buf, sizeof(buf), "Chip %d Pin", chip);
+			root = api_add_int(root, buf, &(minioninfo->chip_pin[chip]), true);
+			snprintf(buf, sizeof(buf), "Chip %d ChipID", chip);
+			i = (int)(minioninfo->chipid[chip]);
+			root = api_add_int(root, buf, &i, true);
 			snprintf(buf, sizeof(buf), "Chip %d Temperature", chip);
 			root = api_add_const(root, buf, temp_str(minioninfo->chip_status[chip].temp), false);
 			snprintf(buf, sizeof(buf), "Chip %d Cores", chip);
@@ -3608,7 +3825,7 @@ static struct api_data *minion_api_stats(struct cgpu_info *minioncgpu)
 			snprintf(buf, sizeof(buf),
 					"%s%d",
 					j == i ? "" : " ",
-					minioninfo->chip[j] ? 1 : 0);
+					minioninfo->has_chip[j] ? 1 : 0);
 			strcat(data, buf);
 		}
 		snprintf(buf, sizeof(buf), "Detected %02d - %02d", i, to);
@@ -3709,7 +3926,7 @@ static struct api_data *minion_api_stats(struct cgpu_info *minioncgpu)
 
 	que_work = chip_work = 0;
 	for (chip = 0; chip <= max_chip; chip++)
-		if (minioninfo->chip[chip]) {
+		if (minioninfo->has_chip[chip]) {
 			que_work += minioninfo->wchip_list[chip]->count;
 			chip_work += minioninfo->wchip_list[chip]->count;
 		}
diff --git a/miner.h b/miner.h
index a97b5b8..74993c0 100644
--- a/miner.h
+++ b/miner.h
@@ -208,12 +208,6 @@ static inline int fsync (int fd)
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
 #endif
 
-#ifdef MIPSEB
-#ifndef roundl
-#define roundl(x)   (long double)((long long)((x==0)?0.0:((x)+((x)>0)?0.5:-0.5)))
-#endif
-#endif
-
 /* No semtimedop on apple so ignore timeout till we implement one */
 #ifdef __APPLE__
 #define semtimedop(SEM, SOPS, VAL, TIMEOUT) semop(SEM, SOPS, VAL)
@@ -992,6 +986,7 @@ extern bool opt_restart;
 extern char *opt_icarus_options;
 extern char *opt_icarus_timing;
 extern float opt_anu_freq;
+extern float opt_rock_freq;
 #endif
 extern bool opt_worktime;
 #ifdef USE_AVALON
diff --git a/usbutils.c b/usbutils.c
index 4e46b23..595ed05 100644
--- a/usbutils.c
+++ b/usbutils.c
@@ -583,6 +583,16 @@ static struct usb_find_devices find_dev[] = {
 		INTINFO(amu_ints) },
 	{
 		.drv = DRIVER_icarus,
+		.name = "LIN",
+		.ident = IDENT_LIN,
+		.idVendor = 0x10c4,
+		.idProduct = 0xea60,
+		.config = 1,
+		.timeout = ICARUS_TIMEOUT_MS,
+		.latency = LATENCY_UNUSED,
+		INTINFO(amu_ints) },
+	{
+		.drv = DRIVER_icarus,
 		.name = "ANU",
 		.ident = IDENT_ANU,
 		.idVendor = 0x10c4,
diff --git a/usbutils.h b/usbutils.h
index 335cb39..8e9f949 100644
--- a/usbutils.h
+++ b/usbutils.h
@@ -157,6 +157,7 @@ enum sub_ident {
 	IDENT_HFA,
 	IDENT_ICA,
 	IDENT_KLN,
+	IDENT_LIN,
 	IDENT_LLT,
 	IDENT_MMQ,
 	IDENT_NFU,
diff --git a/util.c b/util.c
index 756b77d..683ce09 100644
--- a/util.c
+++ b/util.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2013 Con Kolivas
+ * Copyright 2011-2014 Con Kolivas
  * Copyright 2010 Jeff Garzik
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -720,6 +720,58 @@ bool hex2bin(unsigned char *p, const char *hexstr, size_t len)
 	return ret;
 }
 
+static bool _valid_hex(char *s, const char *file, const char *func, const int line)
+{
+	bool ret = false;
+	int i, len;
+
+	if (unlikely(!s)) {
+		applog(LOG_ERR, "Null string passed to valid_hex from"IN_FMT_FFL, file, func, line);
+		return ret;
+	}
+	len = strlen(s);
+	for (i = 0; i < len; i++) {
+		unsigned char idx = s[i];
+
+		if (unlikely(hex2bin_tbl[idx] < 0)) {
+			applog(LOG_ERR, "Invalid char 0x%x passed to valid_hex from"IN_FMT_FFL, idx, file, func, line);
+			return ret;
+		}
+	}
+	ret = true;
+	return ret;
+}
+
+#define valid_hex(s) _valid_hex(s, __FILE__, __func__, __LINE__)
+
+static bool _valid_ascii(char *s, const char *file, const char *func, const int line)
+{
+	bool ret = false;
+	int i, len;
+
+	if (unlikely(!s)) {
+		applog(LOG_ERR, "Null string passed to valid_ascii from"IN_FMT_FFL, file, func, line);
+		return ret;
+	}
+	len = strlen(s);
+	if (unlikely(!len)) {
+		applog(LOG_ERR, "Zero length string passed to valid_ascii from"IN_FMT_FFL, file, func, line);
+		return ret;
+	}
+	for (i = 0; i < len; i++) {
+		unsigned char idx = s[i];
+
+		if (unlikely(idx < 32 || idx > 126)) {
+			applog(LOG_ERR, "Invalid char 0x%x passed to valid_ascii from"IN_FMT_FFL, idx, file, func, line);
+			return ret;
+		}
+	}
+	ret = true;
+	return ret;
+}
+
+#define valid_ascii(s) _valid_ascii(s, __FILE__, __func__, __LINE__)
+
 static const int b58tobin_tbl[] = {
 	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
@@ -1375,7 +1427,7 @@ bool extract_sockaddr(char *url, char **sockaddr_url, char **sockaddr_port)
 	if (url_len < 1)
 		return false;
 
-	sprintf(url_address, "%.*s", url_len, url_begin);
+	snprintf(url_address, 254, "%.*s", url_len, url_begin);
 
 	if (port_len) {
 		char *slash;
@@ -1685,14 +1737,13 @@ static bool parse_notify(struct pool *pool, json_t *val)
 	ntime = __json_array_string(val, 7);
 	clean = json_is_true(json_array_get(val, 8));
 
-	if (!job_id || !prev_hash || !coinbase1 || !coinbase2 || !bbversion || !nbit || !ntime) {
+	if (!valid_ascii(job_id) || !valid_hex(prev_hash) || !valid_hex(coinbase1) ||
+	    !valid_hex(coinbase2) || !valid_hex(bbversion) || !valid_hex(nbit) ||
+	    !valid_hex(ntime)) {
 		/* Annoying but we must not leak memory */
-		if (job_id)
-			free(job_id);
-		if (coinbase1)
-			free(coinbase1);
-		if (coinbase2)
-			free(coinbase2);
+		free(job_id);
+		free(coinbase1);
+		free(coinbase2);
 		goto out;
 	}
 
@@ -1880,7 +1931,7 @@ static bool parse_reconnect(struct pool *pool, json_t *val)
 	if (!port)
 		port = pool->stratum_port;
 
-	sprintf(address, "%s:%s", url, port);
+	snprintf(address, 254, "%s:%s", url, port);
 
 	if (!extract_sockaddr(address, &sockaddr_url, &stratum_port))
 		return false;
@@ -2551,14 +2602,14 @@ resend:
 	if (!sessionid)
 		applog(LOG_DEBUG, "Failed to get sessionid in initiate_stratum");
 	nonce1 = json_array_string(res_val, 1);
-	if (!nonce1) {
-		applog(LOG_INFO, "Failed to get nonce1 in initiate_stratum");
+	if (!valid_hex(nonce1)) {
+		applog(LOG_INFO, "Failed to get valid nonce1 in initiate_stratum");
 		free(sessionid);
 		goto out;
 	}
 	n2size = json_integer_value(json_array_get(res_val, 2));
-	if (!n2size) {
-		applog(LOG_INFO, "Failed to get n2size in initiate_stratum");
+	if (n2size < 2 || n2size > 16) {
+		applog(LOG_INFO, "Failed to get valid n2size in initiate_stratum");
 		free(sessionid);
 		free(nonce1);
 		goto out;