| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <arch/mmio.h> |
| #include <console/console.h> |
| #include <cpu/x86/smm.h> |
| #include <types.h> |
| |
| #include "txt.h" |
| #include "txt_getsec.h" |
| #include "txt_register.h" |
| |
| const char *intel_txt_processor_error_type(uint8_t type) |
| { |
| static const char *const names[] = { |
| [0] = "Legacy Shutdown", |
| [5] = "Load memory type error in ACM area", |
| [6] = "Unrecognized ACM format", |
| [7] = "Failure to authenticate", |
| [8] = "Invalid ACM format", |
| [9] = "Unexpected Snoop hit", |
| [10] = "Invalid event", |
| [11] = "Invalid MLE", |
| [12] = "Machine check event", |
| [13] = "VMXAbort", |
| [14] = "AC memory corruption", |
| [15] = "Illegal voltage/bus ratio", |
| }; |
| |
| return type < ARRAY_SIZE(names) && names[type] ? names[type] : "Unknown"; |
| } |
| |
| /** |
| * Logs microcode or SINIT ACM errors. |
| * Does not log SBIOS ACM errors. |
| */ |
| static void log_txt_error(const char *phase) |
| { |
| const uint64_t txt_error = read64((void *)TXT_ERROR); |
| |
| if (txt_error & ACMERROR_TXT_VALID) { |
| printk(BIOS_ERR, "%s: Error occurred\n", phase); |
| |
| if (txt_error & ACMERROR_TXT_EXTERNAL) |
| printk(BIOS_ERR, " Caused by: External\n"); |
| else |
| printk(BIOS_ERR, " Caused by: Processor\n"); |
| |
| printk(BIOS_ERR, " Type: %s\n", |
| intel_txt_processor_error_type(txt_error & TXT_ERROR_MASK)); |
| } |
| } |
| |
| /** |
| * Dump useful informaation about the BIOS ACM state. |
| * Should run right after console_init() in romstage. |
| * Resets the platform if TXT reset is active and MLE cannot be established. |
| **/ |
| void intel_txt_log_bios_acm_error(void) |
| { |
| uint32_t bios_acm_error; |
| uint64_t acm_status; |
| uint64_t txt_error; |
| |
| printk(BIOS_INFO, "TEE-TXT: State of ACM and ucode update:\n"); |
| |
| bios_acm_error = read32((void *)TXT_BIOSACM_ERRORCODE); |
| acm_status = read64((void *)TXT_SPAD); |
| txt_error = read64((void *)TXT_ERROR); |
| |
| /* Errors by BIOS ACM or FIT */ |
| if ((txt_error & ACMERROR_TXT_VALID) && |
| (acm_status & ACMERROR_TXT_VALID)) { |
| intel_txt_log_acm_error(bios_acm_error); |
| log_txt_error("FIT MICROCODE"); |
| } |
| /* Errors by SINIT */ |
| if ((txt_error & ACMERROR_TXT_VALID) && |
| !(acm_status & ACMERROR_TXT_VALID)) { |
| intel_txt_log_acm_error(txt_error); |
| log_txt_error("SINIT"); |
| } |
| |
| /* Check for fatal ACM error and TXT reset */ |
| uint8_t error = read8((void *)TXT_ESTS); |
| if (error & TXT_ESTS_TXT_RESET_STS) { |
| printk(BIOS_CRIT, "TXT-STS: Intel TXT reset detected\n"); |
| intel_txt_log_acm_error(read32((void *)TXT_ERROR)); |
| } |
| } |
| |
| /** |
| * Dump information about the provided ACM. |
| */ |
| void txt_dump_acm_info(const struct acm_header_v0 *acm_header) |
| { |
| const struct acm_info_table *info = NULL; |
| if (!acm_header) |
| return; |
| |
| printk(BIOS_INFO, "ACM @ %p\n", acm_header); |
| |
| const size_t acm_size = (acm_header->size & 0xffffff) << 2; |
| const size_t info_off = (acm_header->header_len + acm_header->scratch_size) * 4; |
| |
| if (acm_size > (info_off + sizeof(struct acm_info_table))) |
| info = (const struct acm_info_table *) |
| ((const unsigned char *)acm_header + info_off); |
| |
| printk(BIOS_INFO, " ACM: Binary Info\n"); |
| if (acm_header->module_type == CHIPSET_ACM) |
| printk(BIOS_INFO, " Type: Chipset ACM\n"); |
| |
| if (acm_header->module_sub_type == 0) |
| printk(BIOS_INFO, " Subtype: undefined\n"); |
| else if (acm_header->module_sub_type == 1) |
| printk(BIOS_INFO, " Subtype: Run at reset\n"); |
| |
| printk(BIOS_INFO, " Header: v%u.%u\n", acm_header->header_version[0], |
| acm_header->header_version[1]); |
| |
| printk(BIOS_INFO, " Chipset: %x\n", acm_header->chipset_id); |
| printk(BIOS_INFO, " Size: %zu\n", acm_size); |
| |
| switch (acm_header->flags) { |
| case ACM_FORMAT_FLAGS_PW: |
| printk(BIOS_INFO, " Flags: PW signed (Production Worthy)\n"); |
| break; |
| case ACM_FORMAT_FLAGS_NPW: |
| printk(BIOS_INFO, " Flags: NPW signed (Non Production Worthy)\n"); |
| break; |
| case ACM_FORMAT_FLAGS_DEBUG: |
| printk(BIOS_INFO, " Flags: Debug signed\n"); |
| break; |
| } |
| |
| if (acm_header->module_vendor == INTEL_ACM_VENDOR) |
| printk(BIOS_INFO, " Vendor: Intel Corporation\n"); |
| |
| printk(BIOS_INFO, " Date: %x\n", acm_header->date); |
| |
| switch (acm_header->size) { |
| case ACM_FORMAT_SIZE_64KB: |
| printk(BIOS_INFO, " Size: 64KB\n"); |
| printk(BIOS_INFO, " CBnT: no\n"); |
| break; |
| case ACM_FORMAT_SIZE_128KB: |
| printk(BIOS_INFO, " Size: 128KB\n"); |
| printk(BIOS_INFO, " CBnT: no\n"); |
| break; |
| case ACM_FORMAT_SIZE_256KB: |
| printk(BIOS_INFO, " Size: 256KB\n"); |
| printk(BIOS_INFO, " CBnT: yes\n"); |
| break; |
| default: |
| printk(BIOS_INFO, " Size: 0x%08x\n", acm_header->size); |
| |
| break; |
| } |
| |
| printk(BIOS_INFO, " TXT SVN: %u\n", acm_header->txt_svn); |
| printk(BIOS_INFO, " SE SVN: %u\n", acm_header->se_svn); |
| |
| if (!info) |
| return; |
| printk(BIOS_INFO, " Table info:\n"); |
| printk(BIOS_INFO, " UUID: "); |
| for (size_t i = 0; i < sizeof(info->uuid); i++) |
| printk(BIOS_INFO, "%02X ", info->uuid[i]); |
| printk(BIOS_INFO, "\n"); |
| printk(BIOS_INFO, " Chipset acm type: 0x%x\n", info->chipset_acm_type); |
| printk(BIOS_INFO, " Capabilities: 0x%x\n", info->capabilities); |
| } |
| |
| /** |
| * Dump information about the chipset's TXT capabilities. |
| */ |
| void txt_dump_chipset_info(void) |
| { |
| printk(BIOS_INFO, "TEE-TXT: Chipset Key Hash 0x"); |
| for (int i = 0; i < TXT_ACM_KEY_HASH_LEN; i++) { |
| printk(BIOS_INFO, "%llx", read64((void *)TXT_ACM_KEY_HASH + |
| (i * sizeof(uint64_t)))); |
| } |
| printk(BIOS_INFO, "\n"); |
| |
| printk(BIOS_INFO, "TEE-TXT: DIDVID 0x%x\n", read32((void *)TXT_DIDVID)); |
| printk(BIOS_INFO, "TEE-TXT: production fused chipset: %s\n", |
| intel_txt_chipset_is_production_fused() ? "true" : "false"); |
| } |
| |
| void txt_dump_regions(void) |
| { |
| struct txt_biosdataregion *bdr = NULL; |
| |
| uintptr_t tseg_base; |
| size_t tseg_size; |
| |
| smm_region(&tseg_base, &tseg_size); |
| |
| uint64_t reg64; |
| |
| reg64 = read64((void *)TXT_HEAP_BASE); |
| if ((reg64 != 0 && reg64 != ~0UL) && |
| (read64((void *)(uintptr_t)reg64) >= (sizeof(*bdr) + sizeof(uint64_t)))) |
| bdr = (void *)((uintptr_t)reg64 + sizeof(uint64_t)); |
| |
| printk(BIOS_DEBUG, "TEE-TXT: TSEG 0x%lx, size %zu MiB\n", tseg_base, tseg_size / MiB); |
| printk(BIOS_DEBUG, "TEE-TXT: TXT.HEAP.BASE 0x%llx\n", read64((void *)TXT_HEAP_BASE)); |
| printk(BIOS_DEBUG, "TEE-TXT: TXT.HEAP.SIZE 0x%llx\n", read64((void *)TXT_HEAP_SIZE)); |
| printk(BIOS_DEBUG, "TEE-TXT: TXT.SINIT.BASE 0x%llx\n", read64((void *)TXT_SINIT_BASE)); |
| printk(BIOS_DEBUG, "TEE-TXT: TXT.SINIT.SIZE 0x%llx\n", read64((void *)TXT_SINIT_SIZE)); |
| printk(BIOS_DEBUG, "TEE-TXT: TXT.MSEG.BASE 0x%llx\n", read64((void *)TXT_MSEG_BASE)); |
| printk(BIOS_DEBUG, "TEE-TXT: TXT.MSEG.SIZE 0x%llx\n", read64((void *)TXT_MSEG_SIZE)); |
| |
| if (bdr) { |
| printk(BIOS_DEBUG, "TEE-TXT: BiosDataRegion.bios_sinit_size 0x%x\n", |
| bdr->bios_sinit_size); |
| printk(BIOS_DEBUG, "TEE-TXT: BiosDataRegion.lcp_pd_size 0x%llx\n", |
| bdr->lcp_pd_size); |
| printk(BIOS_DEBUG, "TEE-TXT: BiosDataRegion.lcp_pd_base 0x%llx\n", |
| bdr->lcp_pd_base); |
| } |
| } |
| |
| void txt_dump_getsec_parameters(void) |
| { |
| uint32_t version_mask; |
| uint32_t version_numbers_supported; |
| uint32_t max_size_acm_area; |
| uint32_t memory_type_mask; |
| uint32_t senter_function_disable; |
| uint32_t txt_feature_flags; |
| |
| if (!getsec_parameter(&version_mask, &version_numbers_supported, |
| &max_size_acm_area, &memory_type_mask, |
| &senter_function_disable, &txt_feature_flags)) { |
| printk(BIOS_WARNING, "Could not obtain GETSEC parameters\n"); |
| return; |
| } |
| printk(BIOS_DEBUG, "TEE-TXT: GETSEC[PARAMETERS] returned:\n"); |
| printk(BIOS_DEBUG, " ACM Version comparison mask: %08x\n", version_mask); |
| printk(BIOS_DEBUG, " ACM Version numbers supported: %08x\n", |
| version_numbers_supported); |
| printk(BIOS_DEBUG, " Max size of authenticated code execution area: %08x\n", |
| max_size_acm_area); |
| printk(BIOS_DEBUG, " External memory types supported during AC mode: %08x\n", |
| memory_type_mask); |
| printk(BIOS_DEBUG, " Selective SENTER functionality control: %02x\n", |
| (senter_function_disable >> 8) & 0x7f); |
| printk(BIOS_DEBUG, " Feature Extensions Flags: %08x\n", txt_feature_flags); |
| printk(BIOS_DEBUG, "\tS-CRTM Capability rooted in: "); |
| if (txt_feature_flags & GETSEC_PARAMS_TXT_EXT_CRTM_SUPPORT) { |
| printk(BIOS_DEBUG, "processor\n"); |
| } else { |
| printk(BIOS_DEBUG, "BIOS\n"); |
| } |
| printk(BIOS_DEBUG, "\tMachine Check Register: "); |
| if (txt_feature_flags & GETSEC_PARAMS_TXT_EXT_MACHINE_CHECK) { |
| printk(BIOS_DEBUG, "preserved\n"); |
| } else { |
| printk(BIOS_DEBUG, "must be clear\n"); |
| } |
| } |