Angel Pons | 182dbde | 2020-04-02 23:49:05 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 2 | |
| 3 | /* |
| 4 | * This is a ramstage driver for the Intel Management Engine found in the |
| 5 | * 6-series chipset. It handles the required boot-time messages over the |
| 6 | * MMIO-based Management Engine Interface to tell the ME that the BIOS is |
| 7 | * finished with POST. Additional messages are defined for debug but are |
| 8 | * not used unless the console loglevel is high enough. |
| 9 | */ |
| 10 | |
Furquan Shaikh | 76cedd2 | 2020-05-02 10:24:23 -0700 | [diff] [blame] | 11 | #include <acpi/acpi.h> |
Evgeny Zinoviev | 833e9ba | 2019-11-21 21:47:31 +0300 | [diff] [blame] | 12 | #include <cf9_reset.h> |
Kyösti Mälkki | 13f6650 | 2019-03-03 08:01:05 +0200 | [diff] [blame] | 13 | #include <device/mmio.h> |
Kyösti Mälkki | 21d6a27 | 2019-11-05 18:50:38 +0200 | [diff] [blame] | 14 | #include <device/device.h> |
| 15 | #include <device/pci.h> |
Kyösti Mälkki | f1b58b7 | 2019-03-01 13:43:02 +0200 | [diff] [blame] | 16 | #include <device/pci_ops.h> |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 17 | #include <console/console.h> |
| 18 | #include <device/pci_ids.h> |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 19 | #include <string.h> |
Duncan Laurie | c1c9435 | 2012-07-13 10:11:54 -0700 | [diff] [blame] | 20 | #include <elog.h> |
Evgeny Zinoviev | 833e9ba | 2019-11-21 21:47:31 +0300 | [diff] [blame] | 21 | #include <halt.h> |
| 22 | #include <option.h> |
| 23 | #include <southbridge/intel/common/me.h> |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 24 | |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 25 | #include "me.h" |
| 26 | #include "pch.h" |
| 27 | |
Angel Pons | c94bc8e | 2021-01-27 12:17:33 +0100 | [diff] [blame] | 28 | static inline void print_cap(const char *name, int state) |
| 29 | { |
| 30 | printk(BIOS_DEBUG, "ME Capability: %-41s : %sabled\n", |
| 31 | name, state ? " en" : "dis"); |
| 32 | } |
| 33 | |
| 34 | static void me_print_fw_version(mbp_fw_version_name *vers_name) |
| 35 | { |
| 36 | if (!vers_name->major_version) { |
| 37 | printk(BIOS_ERR, "ME: mbp missing version report\n"); |
| 38 | return; |
| 39 | } |
| 40 | |
| 41 | printk(BIOS_DEBUG, "ME: found version %d.%d.%d.%d\n", |
| 42 | vers_name->major_version, vers_name->minor_version, |
| 43 | vers_name->hotfix_version, vers_name->build_version); |
| 44 | } |
| 45 | |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 46 | /* Determine the path that we should take based on ME status */ |
Elyes HAOUAS | dc03528 | 2018-09-18 13:28:49 +0200 | [diff] [blame] | 47 | static me_bios_path intel_me_path(struct device *dev) |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 48 | { |
| 49 | me_bios_path path = ME_DISABLE_BIOS_PATH; |
Angel Pons | 3f7bb7d | 2021-01-27 13:03:20 +0100 | [diff] [blame] | 50 | union me_hfs hfs; |
| 51 | union me_gmes gmes; |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 52 | |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 53 | /* S3 wake skips all MKHI messages */ |
Kyösti Mälkki | c3ed886 | 2014-06-19 19:50:51 +0300 | [diff] [blame] | 54 | if (acpi_is_wakeup_s3()) |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 55 | return ME_S3WAKE_BIOS_PATH; |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 56 | |
Angel Pons | 3f7bb7d | 2021-01-27 13:03:20 +0100 | [diff] [blame] | 57 | hfs.raw = pci_read_config32(dev, PCI_ME_HFS); |
| 58 | gmes.raw = pci_read_config32(dev, PCI_ME_GMES); |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 59 | |
| 60 | /* Check and dump status */ |
| 61 | intel_me_status(&hfs, &gmes); |
| 62 | |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 63 | /* Check Current Working State */ |
| 64 | switch (hfs.working_state) { |
| 65 | case ME_HFS_CWS_NORMAL: |
| 66 | path = ME_NORMAL_BIOS_PATH; |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 67 | break; |
| 68 | case ME_HFS_CWS_REC: |
| 69 | path = ME_RECOVERY_BIOS_PATH; |
| 70 | break; |
| 71 | default: |
| 72 | path = ME_DISABLE_BIOS_PATH; |
| 73 | break; |
| 74 | } |
| 75 | |
| 76 | /* Check Current Operation Mode */ |
| 77 | switch (hfs.operation_mode) { |
| 78 | case ME_HFS_MODE_NORMAL: |
| 79 | break; |
| 80 | case ME_HFS_MODE_DEBUG: |
| 81 | case ME_HFS_MODE_DIS: |
| 82 | case ME_HFS_MODE_OVER_JMPR: |
| 83 | case ME_HFS_MODE_OVER_MEI: |
| 84 | default: |
| 85 | path = ME_DISABLE_BIOS_PATH; |
| 86 | break; |
| 87 | } |
| 88 | |
Duncan Laurie | 5c88c6f | 2012-09-01 14:00:23 -0700 | [diff] [blame] | 89 | /* Check for any error code and valid firmware and MBP */ |
| 90 | if (hfs.error_code || hfs.fpt_bad) |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 91 | path = ME_ERROR_BIOS_PATH; |
| 92 | |
Duncan Laurie | 5c88c6f | 2012-09-01 14:00:23 -0700 | [diff] [blame] | 93 | /* Check if the MBP is ready */ |
| 94 | if (!gmes.mbp_rdy) { |
Evgeny Zinoviev | 833e9ba | 2019-11-21 21:47:31 +0300 | [diff] [blame] | 95 | printk(BIOS_CRIT, "%s: mbp is not ready!\n", __func__); |
Duncan Laurie | 5c88c6f | 2012-09-01 14:00:23 -0700 | [diff] [blame] | 96 | path = ME_ERROR_BIOS_PATH; |
| 97 | } |
| 98 | |
Kyösti Mälkki | be5317f | 2019-11-06 12:07:21 +0200 | [diff] [blame] | 99 | if (CONFIG(ELOG) && path != ME_NORMAL_BIOS_PATH) { |
Duncan Laurie | 5c88c6f | 2012-09-01 14:00:23 -0700 | [diff] [blame] | 100 | struct elog_event_data_me_extended data = { |
| 101 | .current_working_state = hfs.working_state, |
| 102 | .operation_state = hfs.operation_state, |
| 103 | .operation_mode = hfs.operation_mode, |
| 104 | .error_code = hfs.error_code, |
| 105 | .progress_code = gmes.progress_code, |
| 106 | .current_pmevent = gmes.current_pmevent, |
| 107 | .current_state = gmes.current_state, |
| 108 | }; |
| 109 | elog_add_event_byte(ELOG_TYPE_MANAGEMENT_ENGINE, path); |
| 110 | elog_add_event_raw(ELOG_TYPE_MANAGEMENT_ENGINE_EXT, |
| 111 | &data, sizeof(data)); |
| 112 | } |
Duncan Laurie | 5c88c6f | 2012-09-01 14:00:23 -0700 | [diff] [blame] | 113 | |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 114 | return path; |
| 115 | } |
| 116 | |
Angel Pons | 7f32df3 | 2020-06-02 13:36:57 +0200 | [diff] [blame] | 117 | static int intel_me_read_mbp(me_bios_payload *mbp_data); |
| 118 | |
Angel Pons | c94bc8e | 2021-01-27 12:17:33 +0100 | [diff] [blame] | 119 | /* Get ME Firmware Capabilities */ |
| 120 | static int mkhi_get_fwcaps(mefwcaps_sku *cap) |
| 121 | { |
| 122 | u32 rule_id = 0; |
| 123 | struct me_fwcaps cap_msg; |
| 124 | struct mkhi_header mkhi = { |
| 125 | .group_id = MKHI_GROUP_ID_FWCAPS, |
| 126 | .command = MKHI_FWCAPS_GET_RULE, |
| 127 | }; |
| 128 | struct mei_header mei = { |
| 129 | .is_complete = 1, |
| 130 | .host_address = MEI_HOST_ADDRESS, |
| 131 | .client_address = MEI_ADDRESS_MKHI, |
| 132 | .length = sizeof(mkhi) + sizeof(rule_id), |
| 133 | }; |
| 134 | |
| 135 | /* Send request and wait for response */ |
| 136 | if (mei_sendrecv(&mei, &mkhi, &rule_id, &cap_msg, sizeof(cap_msg)) < 0) { |
| 137 | printk(BIOS_ERR, "ME: GET FWCAPS message failed\n"); |
| 138 | return -1; |
| 139 | } |
| 140 | *cap = cap_msg.caps_sku; |
| 141 | return 0; |
| 142 | } |
| 143 | |
| 144 | /* Get ME Firmware Capabilities */ |
| 145 | static void me_print_fwcaps(mbp_fw_caps *caps_section) |
| 146 | { |
| 147 | mefwcaps_sku *cap = &caps_section->fw_capabilities; |
| 148 | if (!caps_section->available) { |
| 149 | printk(BIOS_ERR, "ME: mbp missing fwcaps report\n"); |
| 150 | if (mkhi_get_fwcaps(cap)) |
| 151 | return; |
| 152 | } |
| 153 | |
| 154 | print_cap("Full Network manageability", cap->full_net); |
| 155 | print_cap("Regular Network manageability", cap->std_net); |
| 156 | print_cap("Manageability", cap->manageability); |
| 157 | print_cap("Small business technology", cap->small_business); |
| 158 | print_cap("Level III manageability", cap->l3manageability); |
| 159 | print_cap("IntelR Anti-Theft (AT)", cap->intel_at); |
| 160 | print_cap("IntelR Capability Licensing Service (CLS)", cap->intel_cls); |
| 161 | print_cap("IntelR Power Sharing Technology (MPC)", cap->intel_mpc); |
| 162 | print_cap("ICC Over Clocking", cap->icc_over_clocking); |
| 163 | print_cap("Protected Audio Video Path (PAVP)", cap->pavp); |
| 164 | print_cap("IPV6", cap->ipv6); |
| 165 | print_cap("KVM Remote Control (KVM)", cap->kvm); |
| 166 | print_cap("Outbreak Containment Heuristic (OCH)", cap->och); |
| 167 | print_cap("Virtual LAN (VLAN)", cap->vlan); |
| 168 | print_cap("TLS", cap->tls); |
| 169 | print_cap("Wireless LAN (WLAN)", cap->wlan); |
| 170 | } |
| 171 | |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 172 | /* Check whether ME is present and do basic init */ |
Elyes HAOUAS | dc03528 | 2018-09-18 13:28:49 +0200 | [diff] [blame] | 173 | static void intel_me_init(struct device *dev) |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 174 | { |
| 175 | me_bios_path path = intel_me_path(dev); |
| 176 | me_bios_payload mbp_data; |
Evgeny Zinoviev | 833e9ba | 2019-11-21 21:47:31 +0300 | [diff] [blame] | 177 | bool need_reset = false; |
Angel Pons | 3f7bb7d | 2021-01-27 13:03:20 +0100 | [diff] [blame] | 178 | union me_hfs hfs; |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 179 | |
| 180 | /* Do initial setup and determine the BIOS path */ |
Angel Pons | 2e29c3b | 2020-08-10 15:47:28 +0200 | [diff] [blame] | 181 | printk(BIOS_NOTICE, "ME: BIOS path: %s\n", me_get_bios_path_string(path)); |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 182 | |
Angel Pons | 88dcb31 | 2021-04-26 17:10:28 +0200 | [diff] [blame] | 183 | u8 me_state = get_uint_option("me_state", 0); |
| 184 | u8 me_state_prev = get_uint_option("me_state_prev", 0); |
Evgeny Zinoviev | 833e9ba | 2019-11-21 21:47:31 +0300 | [diff] [blame] | 185 | |
| 186 | printk(BIOS_DEBUG, "ME: me_state=%u, me_state_prev=%u\n", me_state, me_state_prev); |
| 187 | |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 188 | switch (path) { |
| 189 | case ME_S3WAKE_BIOS_PATH: |
James Ye | a85d4a5 | 2020-02-22 20:30:49 +1100 | [diff] [blame] | 190 | #if CONFIG(HIDE_MEI_ON_ERROR) |
| 191 | case ME_ERROR_BIOS_PATH: |
| 192 | #endif |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 193 | intel_me_hide(dev); |
| 194 | break; |
| 195 | |
| 196 | case ME_NORMAL_BIOS_PATH: |
| 197 | /* Validate the extend register */ |
| 198 | if (intel_me_extend_valid(dev) < 0) |
| 199 | break; /* TODO: force recovery mode */ |
| 200 | |
| 201 | /* Prepare MEI MMIO interface */ |
| 202 | if (intel_mei_setup(dev) < 0) |
| 203 | break; |
| 204 | |
Elyes HAOUAS | ba28e8d | 2016-08-31 19:22:16 +0200 | [diff] [blame] | 205 | if (intel_me_read_mbp(&mbp_data)) |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 206 | break; |
| 207 | |
Kyösti Mälkki | c86fc8e | 2019-11-06 06:32:27 +0200 | [diff] [blame] | 208 | if (CONFIG_DEFAULT_CONSOLE_LOGLEVEL >= BIOS_DEBUG) { |
| 209 | me_print_fw_version(&mbp_data.fw_version_name); |
| 210 | me_print_fwcaps(&mbp_data.fw_caps_sku); |
| 211 | } |
Duncan Laurie | 708f731 | 2012-07-10 15:15:41 -0700 | [diff] [blame] | 212 | |
Evgeny Zinoviev | 833e9ba | 2019-11-21 21:47:31 +0300 | [diff] [blame] | 213 | /* Put ME in Software Temporary Disable Mode, if needed */ |
| 214 | if (me_state == CMOS_ME_STATE_DISABLED |
| 215 | && CMOS_ME_STATE(me_state_prev) == CMOS_ME_STATE_NORMAL) { |
| 216 | printk(BIOS_INFO, "ME: disabling ME\n"); |
| 217 | if (enter_soft_temp_disable()) { |
| 218 | enter_soft_temp_disable_wait(); |
| 219 | need_reset = true; |
| 220 | } else { |
| 221 | printk(BIOS_ERR, "ME: failed to enter Soft Temporary Disable mode\n"); |
| 222 | } |
| 223 | |
| 224 | break; |
| 225 | } |
| 226 | |
Duncan Laurie | 708f731 | 2012-07-10 15:15:41 -0700 | [diff] [blame] | 227 | /* |
| 228 | * Leave the ME unlocked in this path. |
| 229 | * It will be locked via SMI command later. |
| 230 | */ |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 231 | break; |
| 232 | |
Evgeny Zinoviev | 833e9ba | 2019-11-21 21:47:31 +0300 | [diff] [blame] | 233 | case ME_DISABLE_BIOS_PATH: |
| 234 | /* Bring ME out of Soft Temporary Disable mode, if needed */ |
Angel Pons | 3f7bb7d | 2021-01-27 13:03:20 +0100 | [diff] [blame] | 235 | hfs.raw = pci_read_config32(dev, PCI_ME_HFS); |
Evgeny Zinoviev | 833e9ba | 2019-11-21 21:47:31 +0300 | [diff] [blame] | 236 | if (hfs.operation_mode == ME_HFS_MODE_DIS |
| 237 | && me_state == CMOS_ME_STATE_NORMAL |
| 238 | && (CMOS_ME_STATE(me_state_prev) == CMOS_ME_STATE_DISABLED |
| 239 | || !CMOS_ME_CHANGED(me_state_prev))) { |
| 240 | printk(BIOS_INFO, "ME: re-enabling ME\n"); |
| 241 | |
| 242 | exit_soft_temp_disable(dev); |
| 243 | exit_soft_temp_disable_wait(dev); |
| 244 | |
| 245 | /* |
| 246 | * ME starts loading firmware immediately after writing to H_GS, |
| 247 | * but Lenovo BIOS performs a reboot after bringing ME back to |
| 248 | * Normal mode. Assume that global reset is needed. |
| 249 | */ |
| 250 | need_reset = true; |
| 251 | } else { |
| 252 | intel_me_hide(dev); |
| 253 | } |
| 254 | break; |
| 255 | |
James Ye | a85d4a5 | 2020-02-22 20:30:49 +1100 | [diff] [blame] | 256 | #if !CONFIG(HIDE_MEI_ON_ERROR) |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 257 | case ME_ERROR_BIOS_PATH: |
James Ye | a85d4a5 | 2020-02-22 20:30:49 +1100 | [diff] [blame] | 258 | #endif |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 259 | case ME_RECOVERY_BIOS_PATH: |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 260 | case ME_FIRMWARE_UPDATE_BIOS_PATH: |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 261 | break; |
| 262 | } |
Evgeny Zinoviev | 833e9ba | 2019-11-21 21:47:31 +0300 | [diff] [blame] | 263 | |
| 264 | /* To avoid boot loops if ME fails to get back from disabled mode, |
| 265 | set the 'changed' bit here. */ |
| 266 | if (me_state != CMOS_ME_STATE(me_state_prev) || need_reset) { |
| 267 | u8 new_state = me_state | CMOS_ME_STATE_CHANGED; |
Angel Pons | 88dcb31 | 2021-04-26 17:10:28 +0200 | [diff] [blame] | 268 | set_uint_option("me_state_prev", new_state); |
Evgeny Zinoviev | 833e9ba | 2019-11-21 21:47:31 +0300 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | if (need_reset) { |
| 272 | set_global_reset(true); |
| 273 | full_reset(); |
| 274 | } |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 275 | } |
| 276 | |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 277 | static struct device_operations device_ops = { |
| 278 | .read_resources = pci_dev_read_resources, |
| 279 | .set_resources = pci_dev_set_resources, |
| 280 | .enable_resources = pci_dev_enable_resources, |
| 281 | .init = intel_me_init, |
Angel Pons | 1fc0edd | 2020-05-31 00:03:28 +0200 | [diff] [blame] | 282 | .ops_pci = &pci_dev_ops_pci, |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 283 | }; |
| 284 | |
| 285 | static const struct pci_driver intel_me __pci_driver = { |
| 286 | .ops = &device_ops, |
Felix Singer | 43b7f41 | 2022-03-07 04:34:52 +0100 | [diff] [blame] | 287 | .vendor = PCI_VID_INTEL, |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 288 | .device = 0x1e3a, |
| 289 | }; |
| 290 | |
| 291 | /****************************************************************************** |
| 292 | * */ |
| 293 | static u32 me_to_host_words_pending(void) |
| 294 | { |
| 295 | struct mei_csr me; |
| 296 | read_me_csr(&me); |
| 297 | if (!me.ready) |
| 298 | return 0; |
| 299 | return (me.buffer_write_ptr - me.buffer_read_ptr) & |
| 300 | (me.buffer_depth - 1); |
| 301 | } |
| 302 | |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 303 | /* |
| 304 | * mbp seems to be following its own flow, let's retrieve it in a dedicated |
| 305 | * function. |
| 306 | */ |
Angel Pons | c94bc8e | 2021-01-27 12:17:33 +0100 | [diff] [blame] | 307 | static int intel_me_read_mbp(me_bios_payload *mbp_data) |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 308 | { |
| 309 | mbp_header mbp_hdr; |
| 310 | mbp_item_header mbp_item_hdr; |
| 311 | u32 me2host_pending; |
| 312 | u32 mbp_item_id; |
| 313 | struct mei_csr host; |
| 314 | |
| 315 | me2host_pending = me_to_host_words_pending(); |
| 316 | if (!me2host_pending) { |
| 317 | printk(BIOS_ERR, "ME: no mbp data!\n"); |
| 318 | return -1; |
| 319 | } |
| 320 | |
| 321 | /* we know for sure that at least the header is there */ |
| 322 | mei_read_dword_ptr(&mbp_hdr, MEI_ME_CB_RW); |
| 323 | |
| 324 | if ((mbp_hdr.num_entries > (mbp_hdr.mbp_size / 2)) || |
| 325 | (me2host_pending < mbp_hdr.mbp_size)) { |
| 326 | printk(BIOS_ERR, "ME: mbp of %d entries, total size %d words" |
| 327 | " buffer contains %d words\n", |
| 328 | mbp_hdr.num_entries, mbp_hdr.mbp_size, |
| 329 | me2host_pending); |
| 330 | return -1; |
| 331 | } |
| 332 | |
| 333 | me2host_pending--; |
| 334 | memset(mbp_data, 0, sizeof(*mbp_data)); |
| 335 | |
| 336 | while (mbp_hdr.num_entries--) { |
Elyes HAOUAS | 448d9fb | 2018-05-22 12:51:27 +0200 | [diff] [blame] | 337 | u32 *copy_addr; |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 338 | u32 copy_size, buffer_room; |
| 339 | void *p; |
| 340 | |
| 341 | if (!me2host_pending) { |
| 342 | printk(BIOS_ERR, "ME: no mbp data %d entries to go!\n", |
| 343 | mbp_hdr.num_entries + 1); |
| 344 | return -1; |
| 345 | } |
| 346 | |
| 347 | mei_read_dword_ptr(&mbp_item_hdr, MEI_ME_CB_RW); |
| 348 | |
| 349 | if (mbp_item_hdr.length > me2host_pending) { |
| 350 | printk(BIOS_ERR, "ME: insufficient mbp data %d " |
| 351 | "entries to go!\n", |
| 352 | mbp_hdr.num_entries + 1); |
| 353 | return -1; |
| 354 | } |
| 355 | |
| 356 | me2host_pending -= mbp_item_hdr.length; |
| 357 | |
| 358 | mbp_item_id = (((u32)mbp_item_hdr.item_id) << 8) + |
| 359 | mbp_item_hdr.app_id; |
| 360 | |
| 361 | copy_size = mbp_item_hdr.length - 1; |
| 362 | |
| 363 | #define SET_UP_COPY(field) { copy_addr = (u32 *)&mbp_data->field; \ |
| 364 | buffer_room = sizeof(mbp_data->field) / sizeof(u32); \ |
| 365 | break; \ |
| 366 | } |
| 367 | |
| 368 | p = &mbp_item_hdr; |
| 369 | printk(BIOS_INFO, "ME: MBP item header %8.8x\n", *((u32*)p)); |
| 370 | |
Elyes HAOUAS | f9de5a4 | 2018-05-03 17:21:02 +0200 | [diff] [blame] | 371 | switch (mbp_item_id) { |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 372 | case 0x101: |
| 373 | SET_UP_COPY(fw_version_name); |
| 374 | |
| 375 | case 0x102: |
| 376 | SET_UP_COPY(icc_profile); |
| 377 | |
| 378 | case 0x103: |
| 379 | SET_UP_COPY(at_state); |
| 380 | |
| 381 | case 0x201: |
| 382 | mbp_data->fw_caps_sku.available = 1; |
| 383 | SET_UP_COPY(fw_caps_sku.fw_capabilities); |
| 384 | |
| 385 | case 0x301: |
| 386 | SET_UP_COPY(rom_bist_data); |
| 387 | |
| 388 | case 0x401: |
| 389 | SET_UP_COPY(platform_key); |
| 390 | |
| 391 | case 0x501: |
| 392 | mbp_data->fw_plat_type.available = 1; |
| 393 | SET_UP_COPY(fw_plat_type.rule_data); |
| 394 | |
| 395 | case 0x601: |
| 396 | SET_UP_COPY(mfsintegrity); |
| 397 | |
| 398 | default: |
Vladimir Serbinenko | afc8d98 | 2014-06-11 18:52:55 +0000 | [diff] [blame] | 399 | printk(BIOS_ERR, "ME: unknown mbp item id 0x%x! Skipping\n", |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 400 | mbp_item_id); |
Elyes HAOUAS | ba28e8d | 2016-08-31 19:22:16 +0200 | [diff] [blame] | 401 | while (copy_size--) |
Vladimir Serbinenko | afc8d98 | 2014-06-11 18:52:55 +0000 | [diff] [blame] | 402 | read_cb(); |
| 403 | continue; |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 404 | } |
| 405 | |
| 406 | if (buffer_room != copy_size) { |
| 407 | printk(BIOS_ERR, "ME: buffer room %d != %d copy size" |
| 408 | " for item 0x%x!!!\n", |
| 409 | buffer_room, copy_size, mbp_item_id); |
| 410 | return -1; |
| 411 | } |
Elyes HAOUAS | ba28e8d | 2016-08-31 19:22:16 +0200 | [diff] [blame] | 412 | while (copy_size--) |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 413 | *copy_addr++ = read_cb(); |
| 414 | } |
| 415 | |
| 416 | read_host_csr(&host); |
| 417 | host.interrupt_generate = 1; |
| 418 | write_host_csr(&host); |
| 419 | |
| 420 | { |
| 421 | int cntr = 0; |
Elyes HAOUAS | ba28e8d | 2016-08-31 19:22:16 +0200 | [diff] [blame] | 422 | while (host.interrupt_generate) { |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 423 | read_host_csr(&host); |
| 424 | cntr++; |
| 425 | } |
| 426 | printk(BIOS_SPEW, "ME: mbp read OK after %d cycles\n", cntr); |
| 427 | } |
| 428 | |
| 429 | return 0; |
| 430 | } |