Message-Id: <e1f88f2e4912c506169bd4620e7752edbf62ec85.1631600169.git.yu.c.chen@intel.com>
Date:   Tue, 14 Sep 2021 16:12:57 +0800
From:   Chen Yu <yu.c.chen@...el.com>
To:     linux-acpi@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <len.brown@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...el.com>,
        Aubrey Li <aubrey.li@...el.com>,
        Ashok Raj <ashok.raj@...el.com>, Chen Yu <yu.c.chen@...el.com>,
        Mike Rapoport <rppt@...nel.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        Shuah Khan <shuah@...nel.org>, linux-kselftest@...r.kernel.org,
        Dou Shengnan <shengnanx.dou@...el.com>
Subject: [PATCH v2 5/5] selftests/pfru: add test for Platform Firmware Runtime Update and Telemetry

Introduce a simple test for Platform Firmware Runtime Update and Telemetry
drivers. It is based on ioctl to either update firmware driver or code injection,
and read corresponding PFRU Telemetry log into user space.

For example:

./pfru_test -h
usage: pfru_test [OPTIONS]
 code injection:
  -l, --load
  -s, --stage
  -a, --activate
  -u, --update [stage and activate]
  -q, --query
  -d, --revid update
 telemetry:
  -G, --getloginfo
  -T, --type(0:execution, 1:history)
  -L, --level(0, 1, 2, 4)
  -R, --read
  -D, --revid log

./pfru_test -G
 log_level:4
 log_type:0
 log_revid:2
 max_data_size:65536
 chunk1_size:0
 chunk2_size:1401
 rollover_cnt:0
 reset_cnt:4

./pfru_test -q
 code injection image type:794bf8b2-6e7b-454e-885f-3fb9bb185402
 fw_version:0
 code_rt_version:1
 driver update image type:0e5f0b14-f849-7945-ad81-bc7b6d2bb245
 drv_rt_version:0
 drv_svn:0
 platform id:39214663-b1a8-4eaa-9024-f2bb53ea4723
 oem id:a36db54f-ea2a-e14e-b7c4-b5780e51ba3d

launch the update:
./pfru_test -l yours.cap -u -T 1 -L 4

Tested-by: Dou Shengnan <shengnanx.dou@...el.com>
Signed-off-by: Chen Yu <yu.c.chen@...el.com>
---
v2: Do not allow non-root user to run this test.
    (Shuah Khan)
    Test runs on platform without pfru_telemetry should skip
    instead of reporting failure/error.
    (Shuah Khan)
    Reuse uapi/linux/pfru.h instead of copying it into
    the test directory.
    (Mike Rapoport)
---
 include/uapi/linux/pfru.h                |   4 +
 tools/testing/selftests/Makefile         |   1 +
 tools/testing/selftests/pfru/Makefile    |   7 +
 tools/testing/selftests/pfru/config      |   2 +
 tools/testing/selftests/pfru/pfru_test.c | 329 +++++++++++++++++++++++
 5 files changed, 343 insertions(+)
 create mode 100644 tools/testing/selftests/pfru/Makefile
 create mode 100644 tools/testing/selftests/pfru/config
 create mode 100644 tools/testing/selftests/pfru/pfru_test.c

diff --git a/include/uapi/linux/pfru.h b/include/uapi/linux/pfru.h
index b5786b51c611..b61f7b5cd1a0 100644
--- a/include/uapi/linux/pfru.h
+++ b/include/uapi/linux/pfru.h
@@ -8,7 +8,11 @@
 #define __PFRU_H__
 
 #include <linux/ioctl.h>
+#ifdef __KERNEL__
 #include <linux/uuid.h>
+#else
+#include <uuid/uuid.h>
+#endif
 
 #define PFRU_UUID		"ECF9533B-4A3C-4E89-939E-C77112601C6D"
 #define PFRU_CODE_INJ_UUID		"B2F84B79-7B6E-4E45-885F-3FB9BB185402"
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index c852eb40c4f7..9f1d7b5ea4a7 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -58,6 +58,7 @@ TARGETS += seccomp
 TARGETS += sgx
 TARGETS += sigaltstack
 TARGETS += size
+TARGETS += pfru
 TARGETS += sparc64
 TARGETS += splice
 TARGETS += static_keys
diff --git a/tools/testing/selftests/pfru/Makefile b/tools/testing/selftests/pfru/Makefile
new file mode 100644
index 000000000000..c61916ccf637
--- /dev/null
+++ b/tools/testing/selftests/pfru/Makefile
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0+
+
+CFLAGS += -Wall -O2
+LDLIBS := -luuid
+
+TEST_GEN_PROGS := pfru_test
+include ../lib.mk
diff --git a/tools/testing/selftests/pfru/config b/tools/testing/selftests/pfru/config
new file mode 100644
index 000000000000..37f53609acbd
--- /dev/null
+++ b/tools/testing/selftests/pfru/config
@@ -0,0 +1,2 @@
+CONFIG_ACPI_PFRU=m
+CONFIG_ACPI_PFRU_TELEMETRY=m
diff --git a/tools/testing/selftests/pfru/pfru_test.c b/tools/testing/selftests/pfru/pfru_test.c
new file mode 100644
index 000000000000..9d9c40f01671
--- /dev/null
+++ b/tools/testing/selftests/pfru/pfru_test.c
@@ -0,0 +1,329 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Tests Runtime Update/Telemetry (see Documentation/x86/pfru_update.rst)
+ */
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+
+#include "../../../../include/uapi/linux/pfru.h"
+
+#define MAX_LOG_SIZE 65536
+
+struct telem_data_info data_info;
+char *capsule_name;
+int action, query_cap, log_type, log_level, log_read, log_getinfo,
+	revid, log_revid;
+int set_log_level, set_log_type,
+	set_revid, set_log_revid;
+
+char *progname;
+
+static int valid_log_level(int level)
+{
+	return (level == LOG_ERR) || (level == LOG_WARN) ||
+		(level == LOG_INFO) || (level == LOG_VERB);
+}
+
+static int valid_log_type(int type)
+{
+	return (type == LOG_EXEC_IDX) || (type == LOG_HISTORY_IDX);
+}
+
+static void help(void)
+{
+	fprintf(stderr,
+		"usage: %s [OPTIONS]\n"
+		" code injection:\n"
+		"  -l, --load\n"
+		"  -s, --stage\n"
+		"  -a, --activate\n"
+		"  -u, --update [stage and activate]\n"
+		"  -q, --query\n"
+		"  -d, --revid update\n"
+		" telemetry:\n"
+		"  -G, --getloginfo\n"
+		"  -T, --type(0:execution, 1:history)\n"
+		"  -L, --level(0, 1, 2, 4)\n"
+		"  -R, --read\n"
+		"  -D, --revid log\n",
+		progname);
+}
+
+char *option_string = "l:sauqd:GT:L:RD:h";
+static struct option long_options[] = {
+	{"load", required_argument, 0, 'l'},
+	{"stage", no_argument, 0, 's'},
+	{"activate", no_argument, 0, 'a'},
+	{"update", no_argument, 0, 'u'},
+	{"query", no_argument, 0, 'q'},
+	{"getloginfo", no_argument, 0, 'G'},
+	{"type", required_argument, 0, 'T'},
+	{"level", required_argument, 0, 'L'},
+	{"read", no_argument, 0, 'R'},
+	{"setrev", required_argument, 0, 'd'},
+	{"setrevlog", required_argument, 0, 'D'},
+	{"help", no_argument, 0, 'h'},
+	{}
+};
+
+static void parse_options(int argc, char **argv)
+{
+	char *pathname;
+	int c;
+
+	pathname = strdup(argv[0]);
+	progname = basename(pathname);
+
+	while (1) {
+		int option_index = 0;
+
+		c = getopt_long(argc, argv, option_string,
+				long_options, &option_index);
+		if (c == -1)
+			break;
+		switch (c) {
+		case 'l':
+			capsule_name = optarg;
+			break;
+		case 's':
+			action = 1;
+			break;
+		case 'a':
+			action = 2;
+			break;
+		case 'u':
+			action = 3;
+			break;
+		case 'q':
+			query_cap = 1;
+			break;
+		case 'G':
+			log_getinfo = 1;
+			break;
+		case 'T':
+			log_type = atoi(optarg);
+			set_log_type = 1;
+			break;
+		case 'L':
+			log_level = atoi(optarg);
+			set_log_level = 1;
+			break;
+		case 'R':
+			log_read = 1;
+			break;
+		case 'd':
+			revid = atoi(optarg);
+			set_revid = 1;
+			break;
+		case 'D':
+			log_revid = atoi(optarg);
+			set_log_revid = 1;
+			break;
+		case 'h':
+			help();
+			break;
+		default:
+			break;
+		}
+	}
+}
+
+void print_cap(struct update_cap_info *cap)
+{
+	char *uuid = malloc(37);
+
+	if (!uuid) {
+		perror("Can not allocate uuid buffer\n");
+		exit(1);
+	}
+	uuid_unparse(cap->code_type, uuid);
+	printf("code injection image type:%s\n", uuid);
+	printf("fw_version:%d\n", cap->fw_version);
+	printf("code_rt_version:%d\n", cap->code_rt_version);
+
+	uuid_unparse(cap->drv_type, uuid);
+	printf("driver update image type:%s\n", uuid);
+	printf("drv_rt_version:%d\n", cap->drv_rt_version);
+	printf("drv_svn:%d\n", cap->drv_svn);
+
+	uuid_unparse(cap->platform_id, uuid);
+	printf("platform id:%s\n", uuid);
+	uuid_unparse(cap->oem_id, uuid);
+	printf("oem id:%s\n", uuid);
+
+	free(uuid);
+}
+
+int main(int argc, char *argv[])
+{
+	int fd_update, fd_log, fd_capsule;
+	struct telem_data_info data_info;
+	struct telem_info info;
+	struct update_cap_info cap;
+	void *addr_map_capsule;
+	struct stat st;
+	char *log_buf;
+	int ret = 0;
+
+	if (getuid() != 0) {
+		printf("Please run the test as root - Exiting.\n");
+		return 1;
+	}
+
+	parse_options(argc, argv);
+
+	fd_update = open("/dev/pfru/update", O_RDWR);
+	if (fd_update < 0) {
+		printf("PFRU device not supported - Quit...\n");
+		return 1;
+	}
+
+	if (query_cap) {
+		ret = read(fd_update, &cap, sizeof(cap));
+		if (ret == -1) {
+			perror("Read error.");
+			return 1;
+		}
+		print_cap(&cap);
+	}
+
+	fd_log = open("/dev/pfru/telemetry", O_RDWR);
+	if (fd_log < 0) {
+		printf("PFRU telemetry not supported. Skip...\n");
+		goto skip_log_set;
+	}
+
+	if (log_getinfo) {
+		ret = ioctl(fd_log, PFRU_LOG_IOC_GET_DATA_INFO, &data_info);
+		if (ret) {
+			perror("Get log data info failed.");
+			return 1;
+		}
+		ret = ioctl(fd_log, PFRU_LOG_IOC_GET_INFO, &info);
+		if (ret) {
+			perror("Get log info failed.");
+			return 1;
+		}
+		printf("log_level:%d\n", info.log_level);
+		printf("log_type:%d\n", info.log_type);
+		printf("log_revid:%d\n", info.log_revid);
+		printf("max_data_size:%d\n", data_info.max_data_size);
+		printf("chunk1_size:%d\n", data_info.chunk1_size);
+		printf("chunk2_size:%d\n", data_info.chunk2_size);
+		printf("rollover_cnt:%d\n", data_info.rollover_cnt);
+		printf("reset_cnt:%d\n", data_info.reset_cnt);
+
+		return 0;
+	}
+
+	info.log_level = -1;
+	info.log_type = -1;
+	info.log_revid = -1;
+
+	if (set_log_level) {
+		if (!valid_log_level(log_level)) {
+			printf("Invalid log level %d\n",
+			       log_level);
+		} else {
+			info.log_level = log_level;
+		}
+	}
+	if (set_log_type) {
+		if (!valid_log_type(log_type)) {
+			printf("Invalid log type %d\n",
+			       log_type);
+		} else {
+			info.log_type = log_type;
+		}
+	}
+	if (set_log_revid) {
+		if (!valid_revid(log_revid)) {
+			printf("Invalid log revid %d\n",
+			       log_revid);
+		} else {
+			info.log_revid = log_revid;
+		}
+	}
+
+	ret = ioctl(fd_log, PFRU_LOG_IOC_SET_INFO, &info);
+	if (ret) {
+		perror("Log information set failed.(log_level, log_type, log_revid)");
+		return 1;
+	}
+
+skip_log_set:
+	if (set_revid) {
+		ret = ioctl(fd_update, PFRU_IOC_SET_REV, &revid);
+		if (ret) {
+			perror("pfru update revid set failed");
+			return 1;
+		}
+		printf("pfru update revid set to %d\n", revid);
+	}
+
+	if (capsule_name) {
+		fd_capsule = open(capsule_name, O_RDONLY);
+		if (fd_capsule < 0) {
+			perror("Can not open capsule file...");
+			return 1;
+		}
+		if (fstat(fd_capsule, &st) < 0) {
+			perror("Can not fstat capsule file...");
+			return 1;
+		}
+		addr_map_capsule = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED,
+					fd_capsule, 0);
+		if (addr_map_capsule == MAP_FAILED) {
+			perror("Failed to mmap capsule file.");
+			return 1;
+		}
+		ret = write(fd_update, (char *)addr_map_capsule, st.st_size);
+		printf("Load %d bytes of capsule file into the system\n",
+		       ret);
+		if (ret == -1) {
+			perror("Failed to load capsule file");
+			return 1;
+		}
+		munmap(addr_map_capsule, st.st_size);
+		printf("Load done.\n");
+	}
+
+	if (action) {
+		if (action == 1)
+			ret = ioctl(fd_update, PFRU_IOC_STAGE, NULL);
+		else if (action == 2)
+			ret = ioctl(fd_update, PFRU_IOC_ACTIVATE, NULL);
+		else if (action == 3)
+			ret = ioctl(fd_update, PFRU_IOC_STAGE_ACTIVATE, NULL);
+		else
+			return 1;
+		printf("Update finished, return %d\n", ret);
+	}
+
+	if (fd_log > 0 && log_read) {
+		log_buf = malloc(MAX_LOG_SIZE + 1);
+		if (!log_buf) {
+			perror("log_buf allocate failed.");
+			return 1;
+		}
+		ret = read(fd_log, log_buf, MAX_LOG_SIZE);
+		if (ret == -1) {
+			perror("Read error.");
+			return 1;
+		}
+		log_buf[ret] = '\0';
+		printf("%s\n", log_buf);
+		free(log_buf);
+	}
+
+	return 0;
+}
-- 
2.25.1

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