1 files changed, 846 insertions, 0 deletions

diff --git a/tools/arch/x86/intel_sdsi/intel_sdsi.c b/tools/arch/x86/intel_sdsi/intel_sdsi.c
new file mode 100644
index 000000000000..2cd92761f171
--- /dev/null
+++ b/tools/arch/x86/intel_sdsi/intel_sdsi.c
@@ -0,0 +1,846 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * sdsi: Intel On Demand (formerly Software Defined Silicon) tool for
+ * provisioning certificates and activation payloads on supported cpus.
+ *
+ * See https://github.com/intel/intel-sdsi/blob/master/os-interface.rst
+ * for register descriptions.
+ *
+ * Copyright (C) 2022 Intel Corporation. All rights reserved.
+ */
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/types.h>
+
+#ifndef __packed
+#define __packed __attribute__((packed))
+#endif
+
+#define min(x, y) ({                            \
+	typeof(x) _min1 = (x);                  \
+	typeof(y) _min2 = (y);                  \
+	(void) (&_min1 == &_min2);              \
+	_min1 < _min2 ? _min1 : _min2; })
+
+#define SDSI_DEV		"intel_vsec.sdsi"
+#define AUX_DEV_PATH		"/sys/bus/auxiliary/devices/"
+#define SDSI_PATH		(AUX_DEV_DIR SDSI_DEV)
+#define GUID_V1			0x6dd191
+#define REGS_SIZE_GUID_V1	72
+#define GUID_V2			0xF210D9EF
+#define REGS_SIZE_GUID_V2	80
+#define STATE_CERT_MAX_SIZE	4096
+#define METER_CERT_MAX_SIZE	4096
+#define STATE_MAX_NUM_LICENSES	16
+#define STATE_MAX_NUM_IN_BUNDLE	(uint32_t)8
+#define METER_MAX_NUM_BUNDLES	8
+
+#define __round_mask(x, y) ((__typeof__(x))((y) - 1))
+#define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1)
+
+struct nvram_content_auth_err_sts {
+	uint64_t reserved:3;
+	uint64_t sdsi_content_auth_err:1;
+	uint64_t reserved1:1;
+	uint64_t sdsi_metering_auth_err:1;
+	uint64_t reserved2:58;
+};
+
+struct enabled_features {
+	uint64_t reserved:3;
+	uint64_t sdsi:1;
+	uint64_t reserved1:8;
+	uint64_t attestation:1;
+	uint64_t reserved2:13;
+	uint64_t metering:1;
+	uint64_t reserved3:37;
+};
+
+struct key_provision_status {
+	uint64_t reserved:1;
+	uint64_t license_key_provisioned:1;
+	uint64_t reserved2:62;
+};
+
+struct auth_fail_count {
+	uint64_t key_failure_count:3;
+	uint64_t key_failure_threshold:3;
+	uint64_t auth_failure_count:3;
+	uint64_t auth_failure_threshold:3;
+	uint64_t reserved:52;
+};
+
+struct availability {
+	uint64_t reserved:48;
+	uint64_t available:3;
+	uint64_t threshold:3;
+	uint64_t reserved2:10;
+};
+
+struct nvram_update_limit {
+	uint64_t reserved:12;
+	uint64_t sdsi_50_pct:1;
+	uint64_t sdsi_75_pct:1;
+	uint64_t sdsi_90_pct:1;
+	uint64_t reserved2:49;
+};
+
+struct sdsi_regs {
+	uint64_t ppin;
+	struct nvram_content_auth_err_sts auth_err_sts;
+	struct enabled_features en_features;
+	struct key_provision_status key_prov_sts;
+	struct auth_fail_count auth_fail_count;
+	struct availability prov_avail;
+	struct nvram_update_limit limits;
+	uint64_t pcu_cr3_capid_cfg;
+	union {
+		struct {
+			uint64_t socket_id;
+		} v1;
+		struct {
+			uint64_t reserved;
+			uint64_t socket_id;
+			uint64_t reserved2;
+		} v2;
+	} extra;
+};
+#define CONTENT_TYPE_LK_ENC		0xD
+#define CONTENT_TYPE_LK_BLOB_ENC	0xE
+
+struct state_certificate {
+	uint32_t content_type;
+	uint32_t region_rev_id;
+	uint32_t header_size;
+	uint32_t total_size;
+	uint32_t key_size;
+	uint32_t num_licenses;
+};
+
+struct license_key_info {
+	uint32_t key_rev_id;
+	uint64_t key_image_content[6];
+} __packed;
+
+#define LICENSE_BLOB_SIZE(l)	(((l) & 0x7fffffff) * 4)
+#define LICENSE_VALID(l)	(!!((l) & 0x80000000))
+
+// License Group Types
+#define LBT_ONE_TIME_UPGRADE	1
+#define LBT_METERED_UPGRADE	2
+
+struct license_blob_content {
+	uint32_t type;
+	uint64_t id;
+	uint64_t ppin;
+	uint64_t previous_ppin;
+	uint32_t rev_id;
+	uint32_t num_bundles;
+} __packed;
+
+struct bundle_encoding {
+	uint32_t encoding;
+	uint32_t encoding_rsvd[7];
+};
+
+struct meter_certificate {
+	uint32_t block_signature;
+	uint32_t counter_unit;
+	uint64_t ppin;
+	uint32_t bundle_length;
+	uint32_t reserved;
+	uint32_t mmrc_encoding;
+	uint32_t mmrc_counter;
+};
+
+struct bundle_encoding_counter {
+	uint32_t encoding;
+	uint32_t counter;
+};
+
+struct sdsi_dev {
+	struct sdsi_regs regs;
+	struct state_certificate sc;
+	char *dev_name;
+	char *dev_path;
+	uint32_t guid;
+};
+
+enum command {
+	CMD_SOCKET_INFO,
+	CMD_METER_CERT,
+	CMD_STATE_CERT,
+	CMD_PROV_AKC,
+	CMD_PROV_CAP,
+};
+
+static void sdsi_list_devices(void)
+{
+	struct dirent *entry;
+	DIR *aux_dir;
+	bool found = false;
+
+	aux_dir = opendir(AUX_DEV_PATH);
+	if (!aux_dir) {
+		fprintf(stderr, "Cannot open directory %s\n", AUX_DEV_PATH);
+		return;
+	}
+
+	while ((entry = readdir(aux_dir))) {
+		if (!strncmp(SDSI_DEV, entry->d_name, strlen(SDSI_DEV))) {
+			found = true;
+			printf("%s\n", entry->d_name);
+		}
+	}
+
+	if (!found)
+		fprintf(stderr, "No On Demand devices found.\n");
+}
+
+static int sdsi_update_registers(struct sdsi_dev *s)
+{
+	FILE *regs_ptr;
+	int ret;
+
+	memset(&s->regs, 0, sizeof(s->regs));
+
+	/* Open the registers file */
+	ret = chdir(s->dev_path);
+	if (ret == -1) {
+		perror("chdir");
+		return ret;
+	}
+
+	regs_ptr = fopen("registers", "r");
+	if (!regs_ptr) {
+		perror("Could not open 'registers' file");
+		return -1;
+	}
+
+	if (s->guid != GUID_V1 && s->guid != GUID_V2) {
+		fprintf(stderr, "Unrecognized guid, 0x%x\n", s->guid);
+		fclose(regs_ptr);
+		return -1;
+	}
+
+	/* Update register info for this guid */
+	ret = fread(&s->regs, sizeof(uint8_t), sizeof(s->regs), regs_ptr);
+	if ((s->guid == GUID_V1 && ret != REGS_SIZE_GUID_V1) ||
+	    (s->guid == GUID_V2 && ret != REGS_SIZE_GUID_V2)) {
+		fprintf(stderr, "Could not read 'registers' file\n");
+		fclose(regs_ptr);
+		return -1;
+	}
+
+	fclose(regs_ptr);
+
+	return 0;
+}
+
+static int sdsi_read_reg(struct sdsi_dev *s)
+{
+	int ret;
+
+	ret = sdsi_update_registers(s);
+	if (ret)
+		return ret;
+
+	/* Print register info for this guid */
+	printf("\n");
+	printf("Socket information for device %s\n", s->dev_name);
+	printf("\n");
+	printf("PPIN:                           0x%lx\n", s->regs.ppin);
+	printf("NVRAM Content Authorization Error Status\n");
+	printf("    SDSi Auth Err Sts:          %s\n", !!s->regs.auth_err_sts.sdsi_content_auth_err ? "Error" : "Okay");
+
+	if (!!s->regs.en_features.metering)
+		printf("    Metering Auth Err Sts:      %s\n", !!s->regs.auth_err_sts.sdsi_metering_auth_err ? "Error" : "Okay");
+
+	printf("Enabled Features\n");
+	printf("    On Demand:                  %s\n", !!s->regs.en_features.sdsi ? "Enabled" : "Disabled");
+	printf("    Attestation:                %s\n", !!s->regs.en_features.attestation ? "Enabled" : "Disabled");
+	printf("    On Demand:                  %s\n", !!s->regs.en_features.sdsi ? "Enabled" : "Disabled");
+	printf("    Metering:                   %s\n", !!s->regs.en_features.metering ? "Enabled" : "Disabled");
+	printf("License Key (AKC) Provisioned:  %s\n", !!s->regs.key_prov_sts.license_key_provisioned ? "Yes" : "No");
+	printf("Authorization Failure Count\n");
+	printf("    AKC Failure Count:          %d\n", s->regs.auth_fail_count.key_failure_count);
+	printf("    AKC Failure Threshold:      %d\n", s->regs.auth_fail_count.key_failure_threshold);
+	printf("    CAP Failure Count:          %d\n", s->regs.auth_fail_count.auth_failure_count);
+	printf("    CAP Failure Threshold:      %d\n", s->regs.auth_fail_count.auth_failure_threshold);
+	printf("Provisioning Availability\n");
+	printf("    Updates Available:          %d\n", s->regs.prov_avail.available);
+	printf("    Updates Threshold:          %d\n", s->regs.prov_avail.threshold);
+	printf("NVRAM Udate Limit\n");
+	printf("    50%% Limit Reached:          %s\n", !!s->regs.limits.sdsi_50_pct ? "Yes" : "No");
+	printf("    75%% Limit Reached:          %s\n", !!s->regs.limits.sdsi_75_pct ? "Yes" : "No");
+	printf("    90%% Limit Reached:          %s\n", !!s->regs.limits.sdsi_90_pct ? "Yes" : "No");
+	if (s->guid == GUID_V1)
+		printf("Socket ID:                      %ld\n", s->regs.extra.v1.socket_id & 0xF);
+	else
+		printf("Socket ID:                      %ld\n", s->regs.extra.v2.socket_id & 0xF);
+
+	return 0;
+}
+
+static char *license_blob_type(uint32_t type)
+{
+	switch (type) {
+	case LBT_ONE_TIME_UPGRADE:
+		return "One time upgrade";
+	case LBT_METERED_UPGRADE:
+		return "Metered upgrade";
+	default:
+		return "Unknown license blob type";
+	}
+}
+
+static char *content_type(uint32_t type)
+{
+	switch (type) {
+	case  CONTENT_TYPE_LK_ENC:
+		return "Licencse key encoding";
+	case CONTENT_TYPE_LK_BLOB_ENC:
+		return "License key + Blob encoding";
+	default:
+		return "Unknown content type";
+	}
+}
+
+static void get_feature(uint32_t encoding, char *feature)
+{
+	char *name = (char *)&encoding;
+
+	feature[3] = name[0];
+	feature[2] = name[1];
+	feature[1] = name[2];
+	feature[0] = name[3];
+}
+
+static int sdsi_meter_cert_show(struct sdsi_dev *s)
+{
+	char buf[METER_CERT_MAX_SIZE] = {0};
+	struct bundle_encoding_counter *bec;
+	struct meter_certificate *mc;
+	uint32_t count = 0;
+	FILE *cert_ptr;
+	int ret, size;
+
+	ret = sdsi_update_registers(s);
+	if (ret)
+		return ret;
+
+	if (!s->regs.en_features.sdsi) {
+		fprintf(stderr, "SDSi feature is present but not enabled.\n");
+		fprintf(stderr, " Unable to read meter certificate\n");
+		return -1;
+	}
+
+	if (!s->regs.en_features.metering) {
+		fprintf(stderr, "Metering not supporting on this socket.\n");
+		return -1;
+	}
+
+	ret = chdir(s->dev_path);
+	if (ret == -1) {
+		perror("chdir");
+		return ret;
+	}
+
+	cert_ptr = fopen("meter_certificate", "r");
+	if (!cert_ptr) {
+		perror("Could not open 'meter_certificate' file");
+		return -1;
+	}
+
+	size = fread(buf, 1, sizeof(buf), cert_ptr);
+	if (!size) {
+		fprintf(stderr, "Could not read 'meter_certificate' file\n");
+		fclose(cert_ptr);
+		return -1;
+	}
+	fclose(cert_ptr);
+
+	mc = (struct meter_certificate *)buf;
+
+	printf("\n");
+	printf("Meter certificate for device %s\n", s->dev_name);
+	printf("\n");
+	printf("Block Signature:       0x%x\n", mc->block_signature);
+	printf("Count Unit:            %dms\n", mc->counter_unit);
+	printf("PPIN:                  0x%lx\n", mc->ppin);
+	printf("Feature Bundle Length: %d\n", mc->bundle_length);
+	printf("MMRC encoding:         %d\n", mc->mmrc_encoding);
+	printf("MMRC counter:          %d\n", mc->mmrc_counter);
+	if (mc->bundle_length % 8) {
+		fprintf(stderr, "Invalid bundle length\n");
+		return -1;
+	}
+
+	if (mc->bundle_length > METER_MAX_NUM_BUNDLES * 8)  {
+		fprintf(stderr, "More than %d bundles: %d\n",
+			METER_MAX_NUM_BUNDLES, mc->bundle_length / 8);
+		return -1;
+	}
+
+	bec = (void *)(mc) + sizeof(mc);
+
+	printf("Number of Feature Counters:          %d\n", mc->bundle_length / 8);
+	while (count++ < mc->bundle_length / 8) {
+		char feature[5];
+
+		feature[4] = '\0';
+		get_feature(bec[count].encoding, feature);
+		printf("    %s:          %d\n", feature, bec[count].counter);
+	}
+
+	return 0;
+}
+
+static int sdsi_state_cert_show(struct sdsi_dev *s)
+{
+	char buf[STATE_CERT_MAX_SIZE] = {0};
+	struct state_certificate *sc;
+	struct license_key_info *lki;
+	uint32_t offset = 0;
+	uint32_t count = 0;
+	FILE *cert_ptr;
+	int ret, size;
+
+	ret = sdsi_update_registers(s);
+	if (ret)
+		return ret;
+
+	if (!s->regs.en_features.sdsi) {
+		fprintf(stderr, "On Demand feature is present but not enabled.");
+		fprintf(stderr, " Unable to read state certificate");
+		return -1;
+	}
+
+	ret = chdir(s->dev_path);
+	if (ret == -1) {
+		perror("chdir");
+		return ret;
+	}
+
+	cert_ptr = fopen("state_certificate", "r");
+	if (!cert_ptr) {
+		perror("Could not open 'state_certificate' file");
+		return -1;
+	}
+
+	size = fread(buf, 1, sizeof(buf), cert_ptr);
+	if (!size) {
+		fprintf(stderr, "Could not read 'state_certificate' file\n");
+		fclose(cert_ptr);
+		return -1;
+	}
+	fclose(cert_ptr);
+
+	sc = (struct state_certificate *)buf;
+
+	/* Print register info for this guid */
+	printf("\n");
+	printf("State certificate for device %s\n", s->dev_name);
+	printf("\n");
+	printf("Content Type:          %s\n", content_type(sc->content_type));
+	printf("Region Revision ID:    %d\n", sc->region_rev_id);
+	printf("Header Size:           %d\n", sc->header_size * 4);
+	printf("Total Size:            %d\n", sc->total_size);
+	printf("OEM Key Size:          %d\n", sc->key_size * 4);
+	printf("Number of Licenses:    %d\n", sc->num_licenses);
+
+	/* Skip over the license sizes 4 bytes per license) to get the license key info */
+	lki = (void *)sc + sizeof(*sc) + (4 * sc->num_licenses);
+
+	printf("License blob Info:\n");
+	printf("    License Key Revision ID:    0x%x\n", lki->key_rev_id);
+	printf("    License Key Image Content:  0x%lx%lx%lx%lx%lx%lx\n",
+	       lki->key_image_content[5], lki->key_image_content[4],
+	       lki->key_image_content[3], lki->key_image_content[2],
+	       lki->key_image_content[1], lki->key_image_content[0]);
+
+	while (count++ < sc->num_licenses) {
+		uint32_t blob_size_field = *(uint32_t *)(buf + 0x14 + count * 4);
+		uint32_t blob_size = LICENSE_BLOB_SIZE(blob_size_field);
+		bool license_valid = LICENSE_VALID(blob_size_field);
+		struct license_blob_content *lbc =
+			(void *)(sc) +			// start of the state certificate
+			sizeof(*sc) +			// size of the state certificate
+			(4 * sc->num_licenses) +	// total size of the blob size blocks
+			sizeof(*lki) +			// size of the license key info
+			offset;				// offset to this blob content
+		struct bundle_encoding *bundle = (void *)(lbc) + sizeof(*lbc);
+		char feature[5];
+		uint32_t i;
+
+		printf("     Blob %d:\n", count - 1);
+		printf("        License blob size:          %u\n", blob_size);
+		printf("        License is valid:           %s\n", license_valid ? "Yes" : "No");
+		printf("        License blob type:          %s\n", license_blob_type(lbc->type));
+		printf("        License blob ID:            0x%lx\n", lbc->id);
+		printf("        PPIN:                       0x%lx\n", lbc->ppin);
+		printf("        Previous PPIN:              0x%lx\n", lbc->previous_ppin);
+		printf("        Blob revision ID:           %u\n", lbc->rev_id);
+		printf("        Number of Features:         %u\n", lbc->num_bundles);
+
+		feature[4] = '\0';
+
+		for (i = 0; i < min(lbc->num_bundles, STATE_MAX_NUM_IN_BUNDLE); i++) {
+			get_feature(bundle[i].encoding, feature);
+			printf("                 Feature %d:         %s\n", i, feature);
+		}
+
+		if (lbc->num_bundles > STATE_MAX_NUM_IN_BUNDLE)
+			fprintf(stderr, "        Warning: %d > %d licenses in bundle reported.\n",
+				lbc->num_bundles, STATE_MAX_NUM_IN_BUNDLE);
+
+		offset += blob_size;
+	};
+
+	return 0;
+}
+
+static int sdsi_provision(struct sdsi_dev *s, char *bin_file, enum command command)
+{
+	int bin_fd, prov_fd, size, ret;
+	char buf[STATE_CERT_MAX_SIZE] = { 0 };
+	char cap[] = "provision_cap";
+	char akc[] = "provision_akc";
+	char *prov_file;
+
+	if (!bin_file) {
+		fprintf(stderr, "No binary file provided\n");
+		return -1;
+	}
+
+	/* Open the binary */
+	bin_fd = open(bin_file, O_RDONLY);
+	if (bin_fd == -1) {
+		fprintf(stderr, "Could not open file %s: %s\n", bin_file, strerror(errno));
+		return bin_fd;
+	}
+
+	prov_file = (command == CMD_PROV_AKC) ? akc : cap;
+
+	ret = chdir(s->dev_path);
+	if (ret == -1) {
+		perror("chdir");
+		close(bin_fd);
+		return ret;
+	}
+
+	/* Open the provision file */
+	prov_fd = open(prov_file, O_WRONLY);
+	if (prov_fd == -1) {
+		fprintf(stderr, "Could not open file %s: %s\n", prov_file, strerror(errno));
+		close(bin_fd);
+		return prov_fd;
+	}
+
+	/* Read the binary file into the buffer */
+	size = read(bin_fd, buf, STATE_CERT_MAX_SIZE);
+	if (size == -1) {
+		close(bin_fd);
+		close(prov_fd);
+		return -1;
+	}
+
+	ret = write(prov_fd, buf, size);
+	if (ret == -1) {
+		close(bin_fd);
+		close(prov_fd);
+		perror("Provisioning failed");
+		return ret;
+	}
+
+	printf("Provisioned %s file %s successfully\n", prov_file, bin_file);
+
+	close(bin_fd);
+	close(prov_fd);
+
+	return 0;
+}
+
+static int sdsi_provision_akc(struct sdsi_dev *s, char *bin_file)
+{
+	int ret;
+
+	ret = sdsi_update_registers(s);
+	if (ret)
+		return ret;
+
+	if (!s->regs.en_features.sdsi) {
+		fprintf(stderr, "On Demand feature is present but not enabled. Unable to provision");
+		return -1;
+	}
+
+	if (!s->regs.prov_avail.available) {
+		fprintf(stderr, "Maximum number of updates (%d) has been reached.\n",
+			s->regs.prov_avail.threshold);
+		return -1;
+	}
+
+	if (s->regs.auth_fail_count.key_failure_count ==
+	    s->regs.auth_fail_count.key_failure_threshold) {
+		fprintf(stderr, "Maximum number of AKC provision failures (%d) has been reached.\n",
+			s->regs.auth_fail_count.key_failure_threshold);
+		fprintf(stderr, "Power cycle the system to reset the counter\n");
+		return -1;
+	}
+
+	return sdsi_provision(s, bin_file, CMD_PROV_AKC);
+}
+
+static int sdsi_provision_cap(struct sdsi_dev *s, char *bin_file)
+{
+	int ret;
+
+	ret = sdsi_update_registers(s);
+	if (ret)
+		return ret;
+
+	if (!s->regs.en_features.sdsi) {
+		fprintf(stderr, "On Demand feature is present but not enabled. Unable to provision");
+		return -1;
+	}
+
+	if (!s->regs.prov_avail.available) {
+		fprintf(stderr, "Maximum number of updates (%d) has been reached.\n",
+			s->regs.prov_avail.threshold);
+		return -1;
+	}
+
+	if (s->regs.auth_fail_count.auth_failure_count ==
+	    s->regs.auth_fail_count.auth_failure_threshold) {
+		fprintf(stderr, "Maximum number of CAP provision failures (%d) has been reached.\n",
+			s->regs.auth_fail_count.auth_failure_threshold);
+		fprintf(stderr, "Power cycle the system to reset the counter\n");
+		return -1;
+	}
+
+	return sdsi_provision(s, bin_file, CMD_PROV_CAP);
+}
+
+static int read_sysfs_data(const char *file, int *value)
+{
+	char buff[16];
+	FILE *fp;
+
+	fp = fopen(file, "r");
+	if (!fp) {
+		perror(file);
+		return -1;
+	}
+
+	if (!fgets(buff, 16, fp)) {
+		fprintf(stderr, "Failed to read file '%s'", file);
+		fclose(fp);
+		return -1;
+	}
+
+	fclose(fp);
+	*value = strtol(buff, NULL, 0);
+
+	return 0;
+}
+
+static struct sdsi_dev *sdsi_create_dev(char *dev_no)
+{
+	int dev_name_len = sizeof(SDSI_DEV) + strlen(dev_no) + 1;
+	struct sdsi_dev *s;
+	int guid;
+	DIR *dir;
+
+	s = (struct sdsi_dev *)malloc(sizeof(*s));
+	if (!s) {
+		perror("malloc");
+		return NULL;
+	}
+
+	s->dev_name = (char *)malloc(sizeof(SDSI_DEV) + strlen(dev_no) + 1);
+	if (!s->dev_name) {
+		perror("malloc");
+		free(s);
+		return NULL;
+	}
+
+	snprintf(s->dev_name, dev_name_len, "%s.%s", SDSI_DEV, dev_no);
+
+	s->dev_path = (char *)malloc(sizeof(AUX_DEV_PATH) + dev_name_len);
+	if (!s->dev_path) {
+		perror("malloc");
+		free(s->dev_name);
+		free(s);
+		return NULL;
+	}
+
+	snprintf(s->dev_path, sizeof(AUX_DEV_PATH) + dev_name_len, "%s%s", AUX_DEV_PATH,
+		 s->dev_name);
+	dir = opendir(s->dev_path);
+	if (!dir) {
+		fprintf(stderr, "Could not open directory '%s': %s\n", s->dev_path,
+			strerror(errno));
+		free(s->dev_path);
+		free(s->dev_name);
+		free(s);
+		return NULL;
+	}
+
+	if (chdir(s->dev_path) == -1) {
+		perror("chdir");
+		free(s->dev_path);
+		free(s->dev_name);
+		free(s);
+		return NULL;
+	}
+
+	if (read_sysfs_data("guid", &guid)) {
+		free(s->dev_path);
+		free(s->dev_name);
+		free(s);
+		return NULL;
+	}
+
+	s->guid = guid;
+
+	return s;
+}
+
+static void sdsi_free_dev(struct sdsi_dev *s)
+{
+	free(s->dev_path);
+	free(s->dev_name);
+	free(s);
+}
+
+static void usage(char *prog)
+{
+	printf("Usage: %s [-l] [-d DEVNO [-i] [-s] [-m] [-a FILE] [-c FILE]]\n", prog);
+}
+
+static void show_help(void)
+{
+	printf("Commands:\n");
+	printf("  %-18s\t%s\n", "-l, --list",           "list available On Demand devices");
+	printf("  %-18s\t%s\n", "-d, --devno DEVNO",    "On Demand device number");
+	printf("  %-18s\t%s\n", "-i, --info",           "show socket information");
+	printf("  %-18s\t%s\n", "-s, --state",          "show state certificate");
+	printf("  %-18s\t%s\n", "-m, --meter",          "show meter certificate");
+	printf("  %-18s\t%s\n", "-a, --akc FILE",       "provision socket with AKC FILE");
+	printf("  %-18s\t%s\n", "-c, --cap FILE>",      "provision socket with CAP FILE");
+}
+
+int main(int argc, char *argv[])
+{
+	char bin_file[PATH_MAX], *dev_no = NULL;
+	bool device_selected = false;
+	char *progname;
+	enum command command = -1;
+	struct sdsi_dev *s;
+	int ret = 0, opt;
+	int option_index = 0;
+
+	static struct option long_options[] = {
+		{"akc",		required_argument,	0, 'a'},
+		{"cap",		required_argument,	0, 'c'},
+		{"devno",	required_argument,	0, 'd'},
+		{"help",	no_argument,		0, 'h'},
+		{"info",	no_argument,		0, 'i'},
+		{"list",	no_argument,		0, 'l'},
+		{"meter",	no_argument,		0, 'm'},
+		{"state",	no_argument,		0, 's'},
+		{0,		0,			0, 0 }
+	};
+
+
+	progname = argv[0];
+
+	while ((opt = getopt_long_only(argc, argv, "+a:c:d:hilms", long_options,
+			&option_index)) != -1) {
+		switch (opt) {
+		case 'd':
+			dev_no = optarg;
+			device_selected = true;
+			break;
+		case 'l':
+			sdsi_list_devices();
+			return 0;
+		case 'i':
+			command = CMD_SOCKET_INFO;
+			break;
+		case 'm':
+			command = CMD_METER_CERT;
+			break;
+		case 's':
+			command = CMD_STATE_CERT;
+			break;
+		case 'a':
+		case 'c':
+			if (!access(optarg, F_OK) == 0) {
+				fprintf(stderr, "Could not open file '%s': %s\n", optarg,
+					strerror(errno));
+				return -1;
+			}
+
+			if (!realpath(optarg, bin_file)) {
+				perror("realpath");
+				return -1;
+			}
+
+			command = (opt == 'a') ? CMD_PROV_AKC : CMD_PROV_CAP;
+			break;
+		case 'h':
+			usage(progname);
+			show_help();
+			return 0;
+		default:
+			usage(progname);
+			return -1;
+		}
+	}
+
+	if (device_selected) {
+		s = sdsi_create_dev(dev_no);
+		if (!s)
+			return -1;
+
+		switch (command) {
+		case CMD_SOCKET_INFO:
+			ret = sdsi_read_reg(s);
+			break;
+		case CMD_METER_CERT:
+			ret = sdsi_meter_cert_show(s);
+			break;
+		case CMD_STATE_CERT:
+			ret = sdsi_state_cert_show(s);
+			break;
+		case CMD_PROV_AKC:
+			ret = sdsi_provision_akc(s, bin_file);
+			break;
+		case CMD_PROV_CAP:
+			ret = sdsi_provision_cap(s, bin_file);
+			break;
+		default:
+			fprintf(stderr, "No command specified\n");
+			return -1;
+		}
+
+		sdsi_free_dev(s);
+
+	} else {
+		fprintf(stderr, "No device specified\n");
+		return -1;
+	}
+
+	return ret;
+}