Nico Huber | 99b02a1 | 2017-04-05 17:39:57 +0200 | [diff] [blame] | 1 | /* |
| 2 | * inteltool - dump all registers on an Intel CPU + chipset based system. |
| 3 | * |
| 4 | * Copyright (C) 2017 secunet Security Networks AG |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | */ |
| 15 | |
| 16 | #include <stdio.h> |
| 17 | #include <stdlib.h> |
| 18 | #include <stdint.h> |
| 19 | #include <stdbool.h> |
| 20 | #include <inttypes.h> |
| 21 | #include <assert.h> |
| 22 | #include "pcr.h" |
| 23 | |
| 24 | const uint8_t *sbbar = NULL; |
| 25 | |
| 26 | uint32_t read_pcr32(const uint8_t port, const uint16_t offset) |
| 27 | { |
| 28 | assert(sbbar); |
| 29 | return *(const uint32_t *)(sbbar + (port << 16) + offset); |
| 30 | } |
| 31 | |
Youness Alaoui | d8214d7e | 2018-03-13 16:58:52 -0400 | [diff] [blame] | 32 | static void print_pcr_port(const uint8_t port) |
| 33 | { |
| 34 | size_t i = 0; |
| 35 | uint32_t last_reg = 0; |
| 36 | bool last_printed = true; |
| 37 | |
| 38 | printf("PCR port offset: 0x%06zx\n\n", (size_t)port << 16); |
| 39 | |
| 40 | for (i = 0; i < PCR_PORT_SIZE; i += 4) { |
| 41 | const uint32_t reg = read_pcr32(port, i); |
| 42 | const bool rep = i && last_reg == reg; |
| 43 | if (!rep) { |
| 44 | if (!last_printed) |
| 45 | printf("*\n"); |
| 46 | printf("0x%04zx: 0x%08"PRIx32"\n", i, reg); |
| 47 | } |
| 48 | |
| 49 | last_reg = reg; |
| 50 | last_printed = !rep; |
| 51 | } |
| 52 | if (!last_printed) |
| 53 | printf("*\n"); |
| 54 | } |
| 55 | |
| 56 | void print_pcr_ports(struct pci_dev *const sb, |
| 57 | const uint8_t *const ports, const size_t count) |
| 58 | { |
| 59 | size_t i; |
| 60 | |
| 61 | pcr_init(sb); |
| 62 | |
| 63 | for (i = 0; i < count; ++i) { |
| 64 | printf("\n========== PCR 0x%02x ==========\n\n", ports[i]); |
| 65 | print_pcr_port(ports[i]); |
| 66 | } |
| 67 | } |
| 68 | |
Nico Huber | 99b02a1 | 2017-04-05 17:39:57 +0200 | [diff] [blame] | 69 | void pcr_init(struct pci_dev *const sb) |
| 70 | { |
| 71 | bool error_exit = false; |
| 72 | bool p2sb_revealed = false; |
Nico Huber | 94473af | 2018-11-20 12:10:29 +0100 | [diff] [blame] | 73 | struct pci_dev *p2sb; |
Thomas Heijligen | 725369f | 2019-02-19 10:51:34 +0000 | [diff] [blame] | 74 | bool use_p2sb = true; |
| 75 | pciaddr_t sbbar_phys; |
Nico Huber | 99b02a1 | 2017-04-05 17:39:57 +0200 | [diff] [blame] | 76 | |
| 77 | if (sbbar) |
| 78 | return; |
| 79 | |
Nico Huber | 94473af | 2018-11-20 12:10:29 +0100 | [diff] [blame] | 80 | switch (sb->device_id) { |
| 81 | case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_PRE: |
Felix Singer | 0a7543d | 2019-02-19 23:49:11 +0100 | [diff] [blame] | 82 | case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_PRE: |
| 83 | case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_U_BASE_SKL: |
| 84 | case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_Y_PREM_SKL: |
| 85 | case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_U_PREM_SKL: |
| 86 | case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_U_BASE_KBL: |
| 87 | case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_U_PREM_KBL: |
| 88 | case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_Y_PREM_KBL: |
Shaleen Jain | 2822d66 | 2019-01-02 11:15:16 +0530 | [diff] [blame] | 89 | case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_U_IHDCP_BASE: |
| 90 | case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_U_IHDCP_PREM: |
| 91 | case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_Y_IHDCP_PREM: |
Nico Huber | 94473af | 2018-11-20 12:10:29 +0100 | [diff] [blame] | 92 | case PCI_DEVICE_ID_INTEL_H110: |
| 93 | case PCI_DEVICE_ID_INTEL_H170: |
| 94 | case PCI_DEVICE_ID_INTEL_Z170: |
| 95 | case PCI_DEVICE_ID_INTEL_Q170: |
| 96 | case PCI_DEVICE_ID_INTEL_Q150: |
| 97 | case PCI_DEVICE_ID_INTEL_B150: |
| 98 | case PCI_DEVICE_ID_INTEL_C236: |
| 99 | case PCI_DEVICE_ID_INTEL_C232: |
| 100 | case PCI_DEVICE_ID_INTEL_QM170: |
| 101 | case PCI_DEVICE_ID_INTEL_HM170: |
| 102 | case PCI_DEVICE_ID_INTEL_CM236: |
| 103 | case PCI_DEVICE_ID_INTEL_HM175: |
| 104 | case PCI_DEVICE_ID_INTEL_QM175: |
| 105 | case PCI_DEVICE_ID_INTEL_CM238: |
Maxim Polyakov | b89ce2e | 2019-08-17 14:54:02 +0300 | [diff] [blame] | 106 | case PCI_DEVICE_ID_INTEL_C621: |
| 107 | case PCI_DEVICE_ID_INTEL_C622: |
| 108 | case PCI_DEVICE_ID_INTEL_C624: |
| 109 | case PCI_DEVICE_ID_INTEL_C625: |
| 110 | case PCI_DEVICE_ID_INTEL_C626: |
| 111 | case PCI_DEVICE_ID_INTEL_C627: |
| 112 | case PCI_DEVICE_ID_INTEL_C628: |
| 113 | case PCI_DEVICE_ID_INTEL_C629: |
| 114 | case PCI_DEVICE_ID_INTEL_C624_SUPER: |
| 115 | case PCI_DEVICE_ID_INTEL_C627_SUPER_1: |
| 116 | case PCI_DEVICE_ID_INTEL_C621_SUPER: |
| 117 | case PCI_DEVICE_ID_INTEL_C627_SUPER_2: |
| 118 | case PCI_DEVICE_ID_INTEL_C628_SUPER: |
Thomas Heijligen | da02719 | 2019-01-12 19:20:50 +0100 | [diff] [blame] | 119 | case PCI_DEVICE_ID_INTEL_DNV_LPC: |
Nico Huber | 94473af | 2018-11-20 12:10:29 +0100 | [diff] [blame] | 120 | p2sb = pci_get_dev(sb->access, 0, 0, 0x1f, 1); |
| 121 | break; |
| 122 | case PCI_DEVICE_ID_INTEL_APL_LPC: |
| 123 | p2sb = pci_get_dev(sb->access, 0, 0, 0x0d, 0); |
| 124 | break; |
Thomas Heijligen | 725369f | 2019-02-19 10:51:34 +0000 | [diff] [blame] | 125 | case PCI_DEVICE_ID_INTEL_H310: |
| 126 | case PCI_DEVICE_ID_INTEL_H370: |
| 127 | case PCI_DEVICE_ID_INTEL_Z390: |
| 128 | case PCI_DEVICE_ID_INTEL_Q370: |
| 129 | case PCI_DEVICE_ID_INTEL_B360: |
| 130 | case PCI_DEVICE_ID_INTEL_C246: |
| 131 | case PCI_DEVICE_ID_INTEL_C242: |
| 132 | case PCI_DEVICE_ID_INTEL_QM370: |
| 133 | case PCI_DEVICE_ID_INTEL_HM370: |
| 134 | case PCI_DEVICE_ID_INTEL_CM246: |
| 135 | sbbar_phys = 0xfd000000; |
| 136 | use_p2sb = false; |
| 137 | break; |
Nico Huber | 94473af | 2018-11-20 12:10:29 +0100 | [diff] [blame] | 138 | default: |
| 139 | perror("Unknown LPC device."); |
| 140 | exit(1); |
| 141 | } |
Nico Huber | 99b02a1 | 2017-04-05 17:39:57 +0200 | [diff] [blame] | 142 | |
Thomas Heijligen | 725369f | 2019-02-19 10:51:34 +0000 | [diff] [blame] | 143 | if (use_p2sb) { |
| 144 | if (!p2sb) { |
| 145 | perror("Can't allocate device node for P2SB."); |
Nico Huber | 99b02a1 | 2017-04-05 17:39:57 +0200 | [diff] [blame] | 146 | exit(1); |
| 147 | } |
Nico Huber | 99b02a1 | 2017-04-05 17:39:57 +0200 | [diff] [blame] | 148 | |
Thomas Heijligen | 725369f | 2019-02-19 10:51:34 +0000 | [diff] [blame] | 149 | /* do not fill bases here, libpci refuses to refill later */ |
| 150 | pci_fill_info(p2sb, PCI_FILL_IDENT); |
| 151 | if (p2sb->vendor_id == 0xffff && p2sb->device_id == 0xffff) { |
| 152 | printf("Trying to reveal Primary to Sideband Bridge " |
| 153 | "(P2SB),\nlet's hope the OS doesn't mind... "); |
| 154 | /* Do not use pci_write_long(). Bytes |
| 155 | surrounding 0xe0 must be maintained. */ |
| 156 | pci_write_byte(p2sb, 0xe0 + 1, 0); |
| 157 | |
| 158 | pci_fill_info(p2sb, PCI_FILL_IDENT | PCI_FILL_RESCAN); |
| 159 | if (p2sb->vendor_id != 0xffff || |
| 160 | p2sb->device_id != 0xffff) { |
| 161 | printf("done.\n"); |
| 162 | p2sb_revealed = true; |
| 163 | } else { |
| 164 | printf("failed.\n"); |
| 165 | exit(1); |
| 166 | } |
| 167 | } |
| 168 | pci_fill_info(p2sb, PCI_FILL_BASES | PCI_FILL_CLASS); |
| 169 | |
| 170 | sbbar_phys = p2sb->base_addr[0] & ~0xfULL; |
| 171 | } |
| 172 | |
Nico Huber | 99b02a1 | 2017-04-05 17:39:57 +0200 | [diff] [blame] | 173 | printf("SBREG_BAR = 0x%08"PRIx64" (MEM)\n\n", (uint64_t)sbbar_phys); |
| 174 | sbbar = map_physical(sbbar_phys, SBBAR_SIZE); |
| 175 | if (sbbar == NULL) { |
| 176 | perror("Error mapping SBREG_BAR"); |
| 177 | error_exit = true; |
| 178 | } |
| 179 | |
Thomas Heijligen | 725369f | 2019-02-19 10:51:34 +0000 | [diff] [blame] | 180 | if (use_p2sb) { |
| 181 | if (p2sb_revealed) { |
| 182 | printf("Hiding Primary to Sideband Bridge (P2SB).\n"); |
| 183 | pci_write_byte(p2sb, 0xe0 + 1, 1); |
| 184 | } |
| 185 | pci_free_dev(p2sb); |
Nico Huber | 99b02a1 | 2017-04-05 17:39:57 +0200 | [diff] [blame] | 186 | } |
Nico Huber | 99b02a1 | 2017-04-05 17:39:57 +0200 | [diff] [blame] | 187 | |
| 188 | if (error_exit) |
| 189 | exit(1); |
| 190 | } |
| 191 | |
| 192 | void pcr_cleanup(void) |
| 193 | { |
| 194 | if (sbbar) |
| 195 | unmap_physical((void *)sbbar, SBBAR_SIZE); |
| 196 | } |