/* SPDX-License-Identifier: GPL-2.0-only */ #include #include #include #include #include #include #include #define ARRAY_TO_ELEMENT(__array__, __index__, __default__) \ (((__index__) < ARRAY_SIZE((__array__))) ? \ (__array__)[(__index__)] : \ (__default__)) static inline void me_read_dword_ptr(void *ptr, int offset) { u32 dword = pci_read_config32(PCH_DEV_ME, offset); memcpy(ptr, &dword, sizeof(dword)); } /* HFS1[3:0] Current Working State Values */ static const char *me_cws_values[] = { [ME_HFS_CWS_RESET] = "Reset", [ME_HFS_CWS_INIT] = "Initializing", [ME_HFS_CWS_REC] = "Recovery", [3] = "Unknown (3)", [4] = "Unknown (4)", [ME_HFS_CWS_NORMAL] = "Normal", [ME_HFS_CWS_WAIT] = "Platform Disable Wait", [ME_HFS_CWS_TRANS] = "OP State Transition", [ME_HFS_CWS_INVALID] = "Invalid CPU Plugged In", [9] = "Unknown (9)", [10] = "Unknown (10)", [11] = "Unknown (11)", [12] = "Unknown (12)", [13] = "Unknown (13)", [14] = "Unknown (14)", [15] = "Unknown (15)", }; /* HFS1[8:6] Current Operation State Values */ static const char *me_opstate_values[] = { [ME_HFS_STATE_PREBOOT] = "Preboot", [ME_HFS_STATE_M0_UMA] = "M0 with UMA", [ME_HFS_STATE_M3] = "M3 without UMA", [ME_HFS_STATE_M0] = "M0 without UMA", [ME_HFS_STATE_BRINGUP] = "Bring up", [ME_HFS_STATE_ERROR] = "M0 without UMA but with error" }; /* HFS[19:16] Current Operation Mode Values */ static const char *me_opmode_values[] = { [ME_HFS_MODE_NORMAL] = "Normal", [ME_HFS_MODE_DEBUG] = "Debug", [ME_HFS_MODE_DIS] = "Soft Temporary Disable", [ME_HFS_MODE_OVER_JMPR] = "Security Override via Jumper", [ME_HFS_MODE_OVER_MEI] = "Security Override via MEI Message" }; /* HFS[15:12] Error Code Values */ static const char *me_error_values[] = { [ME_HFS_ERROR_NONE] = "No Error", [ME_HFS_ERROR_UNCAT] = "Uncategorized Failure", [ME_HFS_ERROR_IMAGE] = "Image Failure", [ME_HFS_ERROR_DEBUG] = "Debug Failure" }; /* HFS2[31:28] ME Progress Code */ static const char *me_progress_values[] = { [ME_HFS2_PHASE_ROM] = "ROM Phase", [ME_HFS2_PHASE_BUP] = "BUP Phase", [ME_HFS2_PHASE_UKERNEL] = "uKernel Phase", [ME_HFS2_PHASE_POLICY] = "Policy Module", [ME_HFS2_PHASE_MODULE_LOAD] = "Module Loading", [ME_HFS2_PHASE_UNKNOWN] = "Unknown", [ME_HFS2_PHASE_HOST_COMM] = "Host Communication" }; /* HFS2[27:24] Power Management Event */ static const char *me_pmevent_values[] = { [ME_HFS2_PMEVENT_CLEAN_MOFF_MX_WAKE] = "Clean Moff->Mx wake", [ME_HFS2_PMEVENT_MOFF_MX_WAKE_ERROR] = "Moff->Mx wake after an error", [ME_HFS2_PMEVENT_CLEAN_GLOBAL_RESET] = "Clean global reset", [ME_HFS2_PMEVENT_CLEAN_GLOBAL_RESET_ERROR] = "Global reset after an error", [ME_HFS2_PMEVENT_CLEAN_ME_RESET] = "Clean Intel ME reset", [ME_HFS2_PMEVENT_ME_RESET_EXCEPTION] = "Intel ME reset due to exception", [ME_HFS2_PMEVENT_PSEUDO_ME_RESET] = "Pseudo-global reset", [ME_HFS2_PMEVENT_S0MO_SXM3] = "S0/M0->Sx/M3", [ME_HFS2_PMEVENT_SXM3_S0M0] = "Sx/M3->S0/M0", [ME_HFS2_PMEVENT_NON_PWR_CYCLE_RESET] = "Non-power cycle reset", [ME_HFS2_PMEVENT_PWR_CYCLE_RESET_M3] = "Power cycle reset through M3", [ME_HFS2_PMEVENT_PWR_CYCLE_RESET_MOFF] = "Power cycle reset through Moff", [ME_HFS2_PMEVENT_SXMX_SXMOFF] = "Sx/Mx->Sx/Moff" }; /* Progress Code 0 states */ static const char *me_progress_rom_values[] = { [ME_HFS2_STATE_ROM_BEGIN] = "BEGIN", [ME_HFS2_STATE_ROM_DISABLE] = "DISABLE" }; /* Progress Code 1 states */ static const char *me_progress_bup_values[] = { [ME_HFS2_STATE_BUP_INIT] = "Initialization starts", [ME_HFS2_STATE_BUP_DIS_HOST_WAKE] = "Disable the host wake event", [ME_HFS2_STATE_BUP_FLOW_DET] = "Flow determination start process", [ME_HFS2_STATE_BUP_VSCC_ERR] = "Error reading/matching the VSCC table in the descriptor", [ME_HFS2_STATE_BUP_CHECK_STRAP] = "Check to see if straps say ME DISABLED", [ME_HFS2_STATE_BUP_PWR_OK_TIMEOUT] = "Timeout waiting for PWROK", [ME_HFS2_STATE_BUP_MANUF_OVRD_STRAP] = "Possibly handle BUP manufacturing override strap", [ME_HFS2_STATE_BUP_M3] = "Bringup in M3", [ME_HFS2_STATE_BUP_M0] = "Bringup in M0", [ME_HFS2_STATE_BUP_FLOW_DET_ERR] = "Flow detection error", [ME_HFS2_STATE_BUP_M3_CLK_ERR] = "M3 clock switching error", [ME_HFS2_STATE_BUP_CPU_RESET_DID_TIMEOUT_MEM_MISSING] = "Host error - CPU reset timeout, DID timeout, memory missing", [ME_HFS2_STATE_BUP_M3_KERN_LOAD] = "M3 kernel load", [ME_HFS2_STATE_BUP_T32_MISSING] = "T34 missing - cannot program ICC", [ME_HFS2_STATE_BUP_WAIT_DID] = "Waiting for DID BIOS message", [ME_HFS2_STATE_BUP_WAIT_DID_FAIL] = "Waiting for DID BIOS message failure", [ME_HFS2_STATE_BUP_DID_NO_FAIL] = "DID reported no error", [ME_HFS2_STATE_BUP_ENABLE_UMA] = "Enabling UMA", [ME_HFS2_STATE_BUP_ENABLE_UMA_ERR] = "Enabling UMA error", [ME_HFS2_STATE_BUP_SEND_DID_ACK] = "Sending DID Ack to BIOS", [ME_HFS2_STATE_BUP_SEND_DID_ACK_ERR] = "Sending DID Ack to BIOS error", [ME_HFS2_STATE_BUP_M0_CLK] = "Switching clocks in M0", [ME_HFS2_STATE_BUP_M0_CLK_ERR] = "Switching clocks in M0 error", [ME_HFS2_STATE_BUP_TEMP_DIS] = "ME in temp disable", [ME_HFS2_STATE_BUP_M0_KERN_LOAD] = "M0 kernel load", }; /* Progress Code 3 states */ static const char *me_progress_policy_values[] = { [ME_HFS2_STATE_POLICY_ENTRY] = "Entry into Policy Module", [ME_HFS2_STATE_POLICY_RCVD_S3] = "Received S3 entry", [ME_HFS2_STATE_POLICY_RCVD_S4] = "Received S4 entry", [ME_HFS2_STATE_POLICY_RCVD_S5] = "Received S5 entry", [ME_HFS2_STATE_POLICY_RCVD_UPD] = "Received UPD entry", [ME_HFS2_STATE_POLICY_RCVD_PCR] = "Received PCR entry", [ME_HFS2_STATE_POLICY_RCVD_NPCR] = "Received NPCR entry", [ME_HFS2_STATE_POLICY_RCVD_HOST_WAKE] = "Received host wake", [ME_HFS2_STATE_POLICY_RCVD_AC_DC] = "Received AC<>DC switch", [ME_HFS2_STATE_POLICY_RCVD_DID] = "Received DRAM Init Done", [ME_HFS2_STATE_POLICY_VSCC_NOT_FOUND] = "VSCC Data not found for flash device", [ME_HFS2_STATE_POLICY_VSCC_INVALID] = "VSCC Table is not valid", [ME_HFS2_STATE_POLICY_FPB_ERR] = "Flash Partition Boundary is outside address space", [ME_HFS2_STATE_POLICY_DESCRIPTOR_ERR] = "ME cannot access the chipset descriptor region", [ME_HFS2_STATE_POLICY_VSCC_NO_MATCH] = "Required VSCC values for flash parts do not match", }; void intel_me_status(void) { if (CONFIG_DEFAULT_CONSOLE_LOGLEVEL < BIOS_DEBUG) return; struct me_hfs _hfs, *hfs = &_hfs; struct me_hfs2 _hfs2, *hfs2 = &_hfs2; me_read_dword_ptr(hfs, PCI_ME_HFS); me_read_dword_ptr(hfs2, PCI_ME_HFS2); /* Check Current States */ printk(BIOS_DEBUG, "ME: FW Partition Table : %s\n", hfs->fpt_bad ? "BAD" : "OK"); printk(BIOS_DEBUG, "ME: Bringup Loader Failure : %s\n", hfs->ft_bup_ld_flr ? "YES" : "NO"); printk(BIOS_DEBUG, "ME: Firmware Init Complete : %s\n", hfs->fw_init_complete ? "YES" : "NO"); printk(BIOS_DEBUG, "ME: Manufacturing Mode : %s\n", hfs->mfg_mode ? "YES" : "NO"); printk(BIOS_DEBUG, "ME: Boot Options Present : %s\n", hfs->boot_options_present ? "YES" : "NO"); printk(BIOS_DEBUG, "ME: Update In Progress : %s\n", hfs->update_in_progress ? "YES" : "NO"); printk(BIOS_DEBUG, "ME: Current Working State : %s\n", ARRAY_TO_ELEMENT(me_cws_values, hfs->working_state, "Unknown (OOB)")); printk(BIOS_DEBUG, "ME: Current Operation State : %s\n", ARRAY_TO_ELEMENT(me_opstate_values, hfs->operation_state, "Unknown (OOB)")); printk(BIOS_DEBUG, "ME: Current Operation Mode : %s\n", ARRAY_TO_ELEMENT(me_opmode_values, hfs->operation_mode, "Unknown (OOB)")); printk(BIOS_DEBUG, "ME: Error Code : %s\n", ARRAY_TO_ELEMENT(me_error_values, hfs->error_code, "Unknown (OOB)")); printk(BIOS_DEBUG, "ME: Progress Phase : %s\n", ARRAY_TO_ELEMENT(me_progress_values, hfs2->progress_code, "Unknown (OOB)")); printk(BIOS_DEBUG, "ME: Power Management Event : %s\n", ARRAY_TO_ELEMENT(me_pmevent_values, hfs2->current_pmevent, "Unknown (OOB)")); printk(BIOS_DEBUG, "ME: Progress Phase State : "); switch (hfs2->progress_code) { case ME_HFS2_PHASE_ROM: /* ROM Phase */ printk(BIOS_DEBUG, "%s", ARRAY_TO_ELEMENT(me_progress_rom_values, hfs2->current_state, "Unknown (OOB)")); break; case ME_HFS2_PHASE_UKERNEL: /* uKernel Phase */ printk(BIOS_DEBUG, "0x%02x", hfs2->current_state); break; case ME_HFS2_PHASE_BUP: /* Bringup Phase */ if (ARRAY_TO_ELEMENT(me_progress_bup_values, hfs2->current_state, NULL)) printk(BIOS_DEBUG, "%s", ARRAY_TO_ELEMENT(me_progress_bup_values, hfs2->current_state, NULL)); else printk(BIOS_DEBUG, "0x%02x", hfs2->current_state); break; case ME_HFS2_PHASE_POLICY: /* Policy Module Phase */ if (ARRAY_TO_ELEMENT(me_progress_policy_values, hfs2->current_state, NULL)) printk(BIOS_DEBUG, "%s", ARRAY_TO_ELEMENT(me_progress_policy_values, hfs2->current_state, NULL)); else printk(BIOS_DEBUG, "0x%02x", hfs2->current_state); break; case ME_HFS2_PHASE_HOST_COMM: /* Host Communication Phase */ if (!hfs2->current_state) printk(BIOS_DEBUG, "Host communication established"); else printk(BIOS_DEBUG, "0x%02x", hfs2->current_state); break; default: printk(BIOS_DEBUG, "Unknown phase: 0x%02x state: 0x%02x", hfs2->progress_code, hfs2->current_state); } printk(BIOS_DEBUG, "\n"); } void intel_me_hsio_version(uint16_t *version, uint16_t *checksum) { int count; u32 hsiover; struct me_hfs hfs; /* Query for HSIO version, overloads H_GS and HFS */ pci_write_config32(PCH_DEV_ME, PCI_ME_H_GS, ME_HSIO_MESSAGE | ME_HSIO_CMD_GETHSIOVER); /* Must wait for ME acknowledgement */ for (count = ME_RETRY; count > 0; --count) { me_read_dword_ptr(&hfs, PCI_ME_HFS); if (hfs.bios_msg_ack) break; udelay(ME_DELAY); } if (!count) { printk(BIOS_ERR, "ME failed to respond\n"); return; } /* HSIO version should be in HFS_5 */ hsiover = pci_read_config32(PCH_DEV_ME, PCI_ME_HFS5); *version = hsiover >> 16; *checksum = hsiover & 0xffff; printk(BIOS_DEBUG, "ME: HSIO Version : %d (CRC 0x%04x)\n", *version, *checksum); /* Reset registers to normal behavior */ pci_write_config32(PCH_DEV_ME, PCI_ME_H_GS, ME_HSIO_MESSAGE | ME_HSIO_CMD_GETHSIOVER); }