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tools arch x86: Add Intel SDSi provisiong tool
Add tool for key certificate and activation payload provisioning on Intel CPUs supporting Software Defined Silicon (SDSi). Signed-off-by: David E. Box <david.e.box@linux.intel.com> Link: https://lore.kernel.org/r/20220225012457.1661574-1-david.e.box@linux.intel.com Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
David E. Box
Hans de Goede
parent
faabb26838
commit
f6d92cfc79
@ -9881,6 +9881,7 @@ INTEL SDSI DRIVER
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M: David E. Box <david.e.box@linux.intel.com>
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S: Supported
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F: drivers/platform/x86/intel/sdsi.c
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F: tools/arch/x86/intel_sdsi/
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INTEL SKYLAKE INT3472 ACPI DEVICE DRIVER
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M: Daniel Scally <djrscally@gmail.com>
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21
tools/arch/x86/intel_sdsi/Makefile
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21
tools/arch/x86/intel_sdsi/Makefile
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@ -0,0 +1,21 @@
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# SPDX-License-Identifier: GPL-2.0
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# Makefile for Intel Software Defined Silicon provisioning tool
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intel_sdsi: intel_sdsi.c
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CFLAGS = -Wextra
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BINDIR ?= /usr/sbin
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override CFLAGS += -O2 -Wall
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%: %.c
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$(CC) $(CFLAGS) -o $@ $< $(LDFLAGS)
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.PHONY : clean
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clean :
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@rm -f intel_sdsi
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install : intel_sdsi
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install -d $(DESTDIR)$(BINDIR)
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install -m 755 -p intel_sdsi $(DESTDIR)$(BINDIR)/intel_sdsi
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558
tools/arch/x86/intel_sdsi/intel_sdsi.c
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558
tools/arch/x86/intel_sdsi/intel_sdsi.c
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@ -0,0 +1,558 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* sdsi: Intel Software Defined Silicon tool for provisioning certificates
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* and activation payloads on supported cpus.
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*
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* See https://github.com/intel/intel-sdsi/blob/master/os-interface.rst
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* for register descriptions.
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*
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* Copyright (C) 2022 Intel Corporation. All rights reserved.
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*/
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#define SDSI_DEV "intel_vsec.sdsi"
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#define AUX_DEV_PATH "/sys/bus/auxiliary/devices/"
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#define SDSI_PATH (AUX_DEV_DIR SDSI_DEV)
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#define GUID 0x6dd191
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#define REGISTERS_MIN_SIZE 72
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#define __round_mask(x, y) ((__typeof__(x))((y) - 1))
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#define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1)
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struct enabled_features {
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uint64_t reserved:3;
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uint64_t sdsi:1;
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uint64_t reserved1:60;
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};
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struct auth_fail_count {
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uint64_t key_failure_count:3;
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uint64_t key_failure_threshold:3;
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uint64_t auth_failure_count:3;
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uint64_t auth_failure_threshold:3;
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uint64_t reserved:52;
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};
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struct availability {
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uint64_t reserved:48;
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uint64_t available:3;
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uint64_t threshold:3;
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};
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struct sdsi_regs {
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uint64_t ppin;
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uint64_t reserved;
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struct enabled_features en_features;
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uint64_t reserved1;
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struct auth_fail_count auth_fail_count;
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struct availability prov_avail;
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uint64_t reserved2;
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uint64_t reserved3;
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uint64_t socket_id;
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};
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struct sdsi_dev {
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struct sdsi_regs regs;
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char *dev_name;
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char *dev_path;
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int guid;
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};
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enum command {
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CMD_NONE,
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CMD_SOCKET_INFO,
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CMD_DUMP_CERT,
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CMD_PROV_AKC,
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CMD_PROV_CAP,
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};
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static void sdsi_list_devices(void)
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{
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struct dirent *entry;
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DIR *aux_dir;
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bool found = false;
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aux_dir = opendir(AUX_DEV_PATH);
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if (!aux_dir) {
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fprintf(stderr, "Cannot open directory %s\n", AUX_DEV_PATH);
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return;
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}
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while ((entry = readdir(aux_dir))) {
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if (!strncmp(SDSI_DEV, entry->d_name, strlen(SDSI_DEV))) {
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found = true;
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printf("%s\n", entry->d_name);
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}
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}
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if (!found)
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fprintf(stderr, "No sdsi devices found.\n");
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}
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static int sdsi_update_registers(struct sdsi_dev *s)
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{
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FILE *regs_ptr;
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int ret;
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memset(&s->regs, 0, sizeof(s->regs));
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/* Open the registers file */
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ret = chdir(s->dev_path);
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if (ret == -1) {
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perror("chdir");
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return ret;
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}
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regs_ptr = fopen("registers", "r");
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if (!regs_ptr) {
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perror("Could not open 'registers' file");
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return -1;
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}
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if (s->guid != GUID) {
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fprintf(stderr, "Unrecognized guid, 0x%x\n", s->guid);
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fclose(regs_ptr);
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return -1;
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}
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/* Update register info for this guid */
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ret = fread(&s->regs, sizeof(uint8_t), sizeof(s->regs), regs_ptr);
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if (ret != sizeof(s->regs)) {
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fprintf(stderr, "Could not read 'registers' file\n");
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fclose(regs_ptr);
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return -1;
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}
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fclose(regs_ptr);
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return 0;
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}
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static int sdsi_read_reg(struct sdsi_dev *s)
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{
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int ret;
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ret = sdsi_update_registers(s);
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if (ret)
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return ret;
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/* Print register info for this guid */
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printf("\n");
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printf("Socket information for device %s\n", s->dev_name);
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printf("\n");
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printf("PPIN: 0x%lx\n", s->regs.ppin);
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printf("Enabled Features\n");
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printf(" SDSi: %s\n", !!s->regs.en_features.sdsi ? "Enabled" : "Disabled");
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printf("Authorization Failure Count\n");
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printf(" AKC Failure Count: %d\n", s->regs.auth_fail_count.key_failure_count);
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printf(" AKC Failure Threshold: %d\n", s->regs.auth_fail_count.key_failure_threshold);
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printf(" CAP Failure Count: %d\n", s->regs.auth_fail_count.auth_failure_count);
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printf(" CAP Failure Threshold: %d\n", s->regs.auth_fail_count.auth_failure_threshold);
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printf("Provisioning Availability\n");
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printf(" Updates Available: %d\n", s->regs.prov_avail.available);
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printf(" Updates Threshold: %d\n", s->regs.prov_avail.threshold);
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printf("Socket ID: %ld\n", s->regs.socket_id & 0xF);
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return 0;
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}
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static int sdsi_certificate_dump(struct sdsi_dev *s)
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{
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uint64_t state_certificate[512] = {0};
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bool first_instance;
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uint64_t previous;
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FILE *cert_ptr;
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int i, ret, size;
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ret = sdsi_update_registers(s);
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if (ret)
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return ret;
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if (!s->regs.en_features.sdsi) {
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fprintf(stderr, "SDSi feature is present but not enabled.");
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fprintf(stderr, " Unable to read state certificate");
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return -1;
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}
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ret = chdir(s->dev_path);
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if (ret == -1) {
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perror("chdir");
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return ret;
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}
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cert_ptr = fopen("state_certificate", "r");
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if (!cert_ptr) {
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perror("Could not open 'state_certificate' file");
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return -1;
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}
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size = fread(state_certificate, 1, sizeof(state_certificate), cert_ptr);
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if (!size) {
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fprintf(stderr, "Could not read 'state_certificate' file\n");
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fclose(cert_ptr);
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return -1;
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}
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printf("%3d: 0x%lx\n", 0, state_certificate[0]);
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previous = state_certificate[0];
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first_instance = true;
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for (i = 1; i < (int)(round_up(size, sizeof(uint64_t))/sizeof(uint64_t)); i++) {
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if (state_certificate[i] == previous) {
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if (first_instance) {
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puts("*");
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first_instance = false;
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}
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continue;
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}
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printf("%3d: 0x%lx\n", i, state_certificate[i]);
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previous = state_certificate[i];
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first_instance = true;
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}
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printf("%3d\n", i);
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fclose(cert_ptr);
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return 0;
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}
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static int sdsi_provision(struct sdsi_dev *s, char *bin_file, enum command command)
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{
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int bin_fd, prov_fd, size, ret;
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char buf[4096] = { 0 };
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char cap[] = "provision_cap";
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char akc[] = "provision_akc";
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char *prov_file;
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if (!bin_file) {
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fprintf(stderr, "No binary file provided\n");
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return -1;
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}
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/* Open the binary */
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bin_fd = open(bin_file, O_RDONLY);
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if (bin_fd == -1) {
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fprintf(stderr, "Could not open file %s: %s\n", bin_file, strerror(errno));
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return bin_fd;
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}
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prov_file = (command == CMD_PROV_AKC) ? akc : cap;
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ret = chdir(s->dev_path);
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if (ret == -1) {
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perror("chdir");
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close(bin_fd);
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return ret;
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}
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/* Open the provision file */
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prov_fd = open(prov_file, O_WRONLY);
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if (prov_fd == -1) {
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fprintf(stderr, "Could not open file %s: %s\n", prov_file, strerror(errno));
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close(bin_fd);
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return prov_fd;
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}
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/* Read the binary file into the buffer */
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size = read(bin_fd, buf, 4096);
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if (size == -1) {
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close(bin_fd);
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close(prov_fd);
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return -1;
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}
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ret = write(prov_fd, buf, size);
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if (ret == -1) {
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close(bin_fd);
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close(prov_fd);
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perror("Provisioning failed");
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return ret;
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}
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printf("Provisioned %s file %s successfully\n", prov_file, bin_file);
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close(bin_fd);
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close(prov_fd);
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return 0;
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}
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static int sdsi_provision_akc(struct sdsi_dev *s, char *bin_file)
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{
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int ret;
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ret = sdsi_update_registers(s);
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if (ret)
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return ret;
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if (!s->regs.en_features.sdsi) {
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fprintf(stderr, "SDSi feature is present but not enabled. Unable to provision");
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return -1;
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}
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if (!s->regs.prov_avail.available) {
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fprintf(stderr, "Maximum number of updates (%d) has been reached.\n",
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s->regs.prov_avail.threshold);
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return -1;
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}
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if (s->regs.auth_fail_count.key_failure_count ==
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s->regs.auth_fail_count.key_failure_threshold) {
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fprintf(stderr, "Maximum number of AKC provision failures (%d) has been reached.\n",
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s->regs.auth_fail_count.key_failure_threshold);
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fprintf(stderr, "Power cycle the system to reset the counter\n");
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return -1;
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}
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return sdsi_provision(s, bin_file, CMD_PROV_AKC);
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}
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static int sdsi_provision_cap(struct sdsi_dev *s, char *bin_file)
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{
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int ret;
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ret = sdsi_update_registers(s);
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if (ret)
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return ret;
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if (!s->regs.en_features.sdsi) {
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fprintf(stderr, "SDSi feature is present but not enabled. Unable to provision");
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return -1;
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}
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if (!s->regs.prov_avail.available) {
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fprintf(stderr, "Maximum number of updates (%d) has been reached.\n",
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s->regs.prov_avail.threshold);
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return -1;
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}
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if (s->regs.auth_fail_count.auth_failure_count ==
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s->regs.auth_fail_count.auth_failure_threshold) {
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fprintf(stderr, "Maximum number of CAP provision failures (%d) has been reached.\n",
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s->regs.auth_fail_count.auth_failure_threshold);
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fprintf(stderr, "Power cycle the system to reset the counter\n");
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return -1;
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}
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return sdsi_provision(s, bin_file, CMD_PROV_CAP);
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}
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static int read_sysfs_data(const char *file, int *value)
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{
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char buff[16];
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FILE *fp;
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fp = fopen(file, "r");
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if (!fp) {
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perror(file);
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return -1;
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}
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if (!fgets(buff, 16, fp)) {
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fprintf(stderr, "Failed to read file '%s'", file);
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fclose(fp);
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return -1;
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}
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fclose(fp);
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*value = strtol(buff, NULL, 0);
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return 0;
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}
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static struct sdsi_dev *sdsi_create_dev(char *dev_no)
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{
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int dev_name_len = sizeof(SDSI_DEV) + strlen(dev_no) + 1;
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struct sdsi_dev *s;
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int guid;
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DIR *dir;
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s = (struct sdsi_dev *)malloc(sizeof(*s));
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if (!s) {
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perror("malloc");
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return NULL;
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}
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s->dev_name = (char *)malloc(sizeof(SDSI_DEV) + strlen(dev_no) + 1);
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if (!s->dev_name) {
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perror("malloc");
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free(s);
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return NULL;
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}
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snprintf(s->dev_name, dev_name_len, "%s.%s", SDSI_DEV, dev_no);
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s->dev_path = (char *)malloc(sizeof(AUX_DEV_PATH) + dev_name_len);
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if (!s->dev_path) {
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perror("malloc");
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free(s->dev_name);
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free(s);
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return NULL;
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}
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snprintf(s->dev_path, sizeof(AUX_DEV_PATH) + dev_name_len, "%s%s", AUX_DEV_PATH,
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s->dev_name);
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dir = opendir(s->dev_path);
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if (!dir) {
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fprintf(stderr, "Could not open directory '%s': %s\n", s->dev_path,
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strerror(errno));
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free(s->dev_path);
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free(s->dev_name);
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free(s);
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return NULL;
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}
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if (chdir(s->dev_path) == -1) {
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perror("chdir");
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free(s->dev_path);
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free(s->dev_name);
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free(s);
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return NULL;
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}
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if (read_sysfs_data("guid", &guid)) {
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free(s->dev_path);
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free(s->dev_name);
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free(s);
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return NULL;
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}
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s->guid = guid;
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return s;
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}
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static void sdsi_free_dev(struct sdsi_dev *s)
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{
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free(s->dev_path);
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free(s->dev_name);
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free(s);
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}
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static void usage(char *prog)
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{
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printf("Usage: %s [-l] [-d DEVNO [-iD] [-a FILE] [-c FILE]]\n", prog);
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}
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static void show_help(void)
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{
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printf("Commands:\n");
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printf(" %-18s\t%s\n", "-l, --list", "list available sdsi devices");
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printf(" %-18s\t%s\n", "-d, --devno DEVNO", "sdsi device number");
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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");
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
char bin_file[PATH_MAX], *dev_no = NULL;
|
||||
char *progname;
|
||||
enum command command = CMD_NONE;
|
||||
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'},
|
||||
{"dump", no_argument, 0, 'D'},
|
||||
{"help", no_argument, 0, 'h'},
|
||||
{"info", no_argument, 0, 'i'},
|
||||
{"list", no_argument, 0, 'l'},
|
||||
{0, 0, 0, 0 }
|
||||
};
|
||||
|
||||
|
||||
progname = argv[0];
|
||||
|
||||
while ((opt = getopt_long_only(argc, argv, "+a:c:d:Da:c:h", long_options,
|
||||
&option_index)) != -1) {
|
||||
switch (opt) {
|
||||
case 'd':
|
||||
dev_no = optarg;
|
||||
break;
|
||||
case 'l':
|
||||
sdsi_list_devices();
|
||||
return 0;
|
||||
case 'i':
|
||||
command = CMD_SOCKET_INFO;
|
||||
break;
|
||||
case 'D':
|
||||
command = CMD_DUMP_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 (!dev_no) {
|
||||
if (command != CMD_NONE)
|
||||
fprintf(stderr, "Missing device number, DEVNO, for this command\n");
|
||||
usage(progname);
|
||||
return -1;
|
||||
}
|
||||
|
||||
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);
|
||||
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;
|
||||
}
|
||||
|
||||
|
||||
sdsi_free_dev(s);
|
||||
|
||||
return ret;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user