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Commit 3088258e authored by David E. Box's avatar David E. Box Committed by Hans de Goede
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tools/arch/x86: intel_sdsi: Add support for reading state certificates 

Add option to read and decode On Demand state certificates.

Link: https://github.com/intel/intel-sdsi/blob/master/state-certificate-encoding.rstSigned-off-by: default avatarDavid E. Box <david.e.box@linux.intel.com>
Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20221119002343.1281885-6-david.e.box@linux.intel.comSigned-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent a96f1b9c
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Showing with 198 additions and 70 deletions
tools/arch/x86/intel_sdsi/intel_sdsi.c
View file @ 3088258e
......@@ -22,11 +22,24 @@
#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 0x6dd191
#define REGISTERS_MIN_SIZE 72
#define STATE_CERT_MAX_SIZE 4096
#define STATE_MAX_NUM_LICENSES 16
#define STATE_MAX_NUM_IN_BUNDLE (uint32_t)8
#define __round_mask(x, y) ((__typeof__(x))((y) - 1))
#define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1)
......@@ -49,6 +62,7 @@ struct availability {
uint64_t reserved:48;
uint64_t available:3;
uint64_t threshold:3;
uint64_t reserved2:10;
};
struct sdsi_regs {
......@@ -63,17 +77,55 @@ struct sdsi_regs {
uint64_t socket_id;
};
#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 sdsi_dev {
struct sdsi_regs regs;
struct state_certificate sc;
char *dev_name;
char *dev_path;
int guid;
};
enum command {
CMD_NONE,
CMD_SOCKET_INFO,
CMD_DUMP_CERT,
CMD_STATE_CERT,
CMD_PROV_AKC,
CMD_PROV_CAP,
};
......@@ -168,20 +220,56 @@ static int sdsi_read_reg(struct sdsi_dev *s)
return 0;
}
static int sdsi_certificate_dump(struct sdsi_dev *s)
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)
{
uint64_t state_certificate[512] = {0};
bool first_instance;
uint64_t previous;
char *name = (char *)&encoding;
feature[3] = name[0];
feature[2] = name[1];
feature[1] = name[2];
feature[0] = name[3];
}
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 i, ret, size;
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.");
fprintf(stderr, "On Demand feature is present but not enabled.");
fprintf(stderr, " Unable to read state certificate");
return -1;
}
......@@ -198,32 +286,74 @@ static int sdsi_certificate_dump(struct sdsi_dev *s)
return -1;
}
size = fread(state_certificate, 1, sizeof(state_certificate), cert_ptr);
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);
printf("%3d: 0x%lx\n", 0, state_certificate[0]);
previous = state_certificate[0];
first_instance = true;
for (i = 1; i < (int)(round_up(size, sizeof(uint64_t))/sizeof(uint64_t)); i++) {
if (state_certificate[i] == previous) {
if (first_instance) {
puts("*");
first_instance = false;
}
continue;
}
printf("%3d: 0x%lx\n", i, state_certificate[i]);
previous = state_certificate[i];
first_instance = true;
}
printf("%3d\n", i);
sc = (struct state_certificate *)buf;
fclose(cert_ptr);
/* 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;
}
......@@ -231,7 +361,7 @@ static int sdsi_certificate_dump(struct sdsi_dev *s)
static int sdsi_provision(struct sdsi_dev *s, char *bin_file, enum command command)
{
int bin_fd, prov_fd, size, ret;
char buf[4096] = { 0 };
char buf[STATE_CERT_MAX_SIZE] = { 0 };
char cap[] = "provision_cap";
char akc[] = "provision_akc";
char *prov_file;
......@@ -266,7 +396,7 @@ static int sdsi_provision(struct sdsi_dev *s, char *bin_file, enum command comma
}
/* Read the binary file into the buffer */
size = read(bin_fd, buf, 4096);
size = read(bin_fd, buf, STATE_CERT_MAX_SIZE);
if (size == -1) {
close(bin_fd);
close(prov_fd);
......@@ -443,25 +573,26 @@ static void sdsi_free_dev(struct sdsi_dev *s)
static void usage(char *prog)
{
printf("Usage: %s [-l] [-d DEVNO [-iD] [-a FILE] [-c FILE]]\n", prog);
printf("Usage: %s [-l] [-d DEVNO [-i] [-s] [-a FILE] [-c FILE]]\n", prog);
}
static void show_help(void)
{
printf("Commands:\n");
printf(" %-18s\t%s\n", "-l, --list", "list available sdsi devices");
printf(" %-18s\t%s\n", "-d, --devno DEVNO", "sdsi device number");
printf(" %-18s\t%s\n", "-i --info", "show socket information");
printf(" %-18s\t%s\n", "-D --dump", "dump state certificate data");
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");
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", "-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 = CMD_NONE;
enum command command = -1;
struct sdsi_dev *s;
int ret = 0, opt;
int option_index = 0;
......@@ -470,21 +601,22 @@ int main(int argc, char *argv[])
{"akc", required_argument, 0, 'a'},
{"cap", required_argument, 0, 'c'},
{"devno", required_argument, 0, 'd'},
{"dump", no_argument, 0, 'D'},
{"help", no_argument, 0, 'h'},
{"info", no_argument, 0, 'i'},
{"list", no_argument, 0, 'l'},
{"state", no_argument, 0, 's'},
{0, 0, 0, 0 }
};
progname = argv[0];
while ((opt = getopt_long_only(argc, argv, "+a:c:d:Da:c:h", long_options,
while ((opt = getopt_long_only(argc, argv, "+a:c:d:hils", long_options,
&option_index)) != -1) {
switch (opt) {
case 'd':
dev_no = optarg;
device_selected = true;
break;
case 'l':
sdsi_list_devices();
......@@ -492,8 +624,8 @@ int main(int argc, char *argv[])
case 'i':
command = CMD_SOCKET_INFO;
break;
case 'D':
command = CMD_DUMP_CERT;
case 's':
command = CMD_STATE_CERT;
break;
case 'a':
case 'c':
......@@ -520,28 +652,17 @@ int main(int argc, char *argv[])
}
}
if (!dev_no) {
if (command != CMD_NONE)
fprintf(stderr, "Missing device number, DEVNO, for this command\n");
usage(progname);
return -1;
}
if (device_selected) {
s = sdsi_create_dev(dev_no);
if (!s)
return -1;
/* Run the command */
switch (command) {
case CMD_NONE:
fprintf(stderr, "Missing command for device %s\n", dev_no);
usage(progname);
break;
case CMD_SOCKET_INFO:
ret = sdsi_read_reg(s);
break;
case CMD_DUMP_CERT:
ret = sdsi_certificate_dump(s);
case CMD_STATE_CERT:
ret = sdsi_state_cert_show(s);
break;
case CMD_PROV_AKC:
ret = sdsi_provision_akc(s, bin_file);
......@@ -549,10 +670,17 @@ int main(int argc, char *argv[])
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;
}
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