diff --git a/drivers/char/tpm/eventlog/tpm2.c b/drivers/char/tpm/eventlog/tpm2.c
index dc12e1cbd03a..2cfdf1db4363 100644
--- a/drivers/char/tpm/eventlog/tpm2.c
+++ b/drivers/char/tpm/eventlog/tpm2.c
@@ -40,7 +40,7 @@
 static int calc_tpm2_event_size(struct tcg_pcr_event2_head *event,
 				struct tcg_pcr_event *event_header)
 {
-	return __calc_tpm2_event_size(event, event_header);
+	return __calc_tpm2_event_size(event, event_header, false);
 }
 
 static void *tpm2_bios_measurements_start(struct seq_file *m, loff_t *pos)
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 4c46ff6f2242..bf4e9a254e23 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -53,6 +53,7 @@ struct efi __read_mostly efi = {
 	.mem_attr_table		= EFI_INVALID_TABLE_ADDR,
 	.rng_seed		= EFI_INVALID_TABLE_ADDR,
 	.tpm_log		= EFI_INVALID_TABLE_ADDR,
+	.tpm_final_log		= EFI_INVALID_TABLE_ADDR,
 	.mem_reserve		= EFI_INVALID_TABLE_ADDR,
 };
 EXPORT_SYMBOL(efi);
@@ -485,6 +486,7 @@ static __initdata efi_config_table_type_t common_tables[] = {
 	{EFI_MEMORY_ATTRIBUTES_TABLE_GUID, "MEMATTR", &efi.mem_attr_table},
 	{LINUX_EFI_RANDOM_SEED_TABLE_GUID, "RNG", &efi.rng_seed},
 	{LINUX_EFI_TPM_EVENT_LOG_GUID, "TPMEventLog", &efi.tpm_log},
+	{LINUX_EFI_TPM_FINAL_LOG_GUID, "TPMFinalLog", &efi.tpm_final_log},
 	{LINUX_EFI_MEMRESERVE_TABLE_GUID, "MEMRESERVE", &efi.mem_reserve},
 	{NULL_GUID, NULL, NULL},
 };
diff --git a/drivers/firmware/efi/tpm.c b/drivers/firmware/efi/tpm.c
index 0cbeb3d46b18..2ccaa6661aaf 100644
--- a/drivers/firmware/efi/tpm.c
+++ b/drivers/firmware/efi/tpm.c
@@ -10,24 +10,50 @@
 #include <linux/efi.h>
 #include <linux/init.h>
 #include <linux/memblock.h>
+#include <linux/tpm_eventlog.h>
 
 #include <asm/early_ioremap.h>
 
+int efi_tpm_final_log_size;
+EXPORT_SYMBOL(efi_tpm_final_log_size);
+
+static int tpm2_calc_event_log_size(void *data, int count, void *size_info)
+{
+	struct tcg_pcr_event2_head *header;
+	int event_size, size = 0;
+
+	while (count > 0) {
+		header = data + size;
+		event_size = __calc_tpm2_event_size(header, size_info, true);
+		if (event_size == 0)
+			return -1;
+		size += event_size;
+	}
+
+	return size;
+}
+
 /*
  * Reserve the memory associated with the TPM Event Log configuration table.
  */
 int __init efi_tpm_eventlog_init(void)
 {
 	struct linux_efi_tpm_eventlog *log_tbl;
+	struct efi_tcg2_final_events_table *final_tbl;
 	unsigned int tbl_size;
 
-	if (efi.tpm_log == EFI_INVALID_TABLE_ADDR)
+	if (efi.tpm_log == EFI_INVALID_TABLE_ADDR) {
+		/*
+		 * We can't calculate the size of the final events without the
+		 * first entry in the TPM log, so bail here.
+		 */
 		return 0;
+	}
 
 	log_tbl = early_memremap(efi.tpm_log, sizeof(*log_tbl));
 	if (!log_tbl) {
 		pr_err("Failed to map TPM Event Log table @ 0x%lx\n",
-			efi.tpm_log);
+		       efi.tpm_log);
 		efi.tpm_log = EFI_INVALID_TABLE_ADDR;
 		return -ENOMEM;
 	}
@@ -35,6 +61,27 @@ int __init efi_tpm_eventlog_init(void)
 	tbl_size = sizeof(*log_tbl) + log_tbl->size;
 	memblock_reserve(efi.tpm_log, tbl_size);
 	early_memunmap(log_tbl, sizeof(*log_tbl));
+
+	if (efi.tpm_final_log == EFI_INVALID_TABLE_ADDR)
+		return 0;
+
+	final_tbl = early_memremap(efi.tpm_final_log, sizeof(*final_tbl));
+
+	if (!final_tbl) {
+		pr_err("Failed to map TPM Final Event Log table @ 0x%lx\n",
+		       efi.tpm_final_log);
+		efi.tpm_final_log = EFI_INVALID_TABLE_ADDR;
+		return -ENOMEM;
+	}
+
+	tbl_size = tpm2_calc_event_log_size(final_tbl->events,
+					    final_tbl->nr_events,
+					    (void *)efi.tpm_log);
+	memblock_reserve((unsigned long)final_tbl,
+			 tbl_size + sizeof(*final_tbl));
+	early_memunmap(final_tbl, sizeof(*final_tbl));
+	efi_tpm_final_log_size = tbl_size;
+
 	return 0;
 }
 
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 45ff763fba76..730dae84a932 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -676,6 +676,7 @@ void efi_native_runtime_setup(void);
 #define LINUX_EFI_LOADER_ENTRY_GUID		EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf,  0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
 #define LINUX_EFI_RANDOM_SEED_TABLE_GUID	EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2,  0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b)
 #define LINUX_EFI_TPM_EVENT_LOG_GUID		EFI_GUID(0xb7799cb0, 0xeca2, 0x4943,  0x96, 0x67, 0x1f, 0xae, 0x07, 0xb7, 0x47, 0xfa)
+#define LINUX_EFI_TPM_FINAL_LOG_GUID		EFI_GUID(0x1e2ed096, 0x30e2, 0x4254,  0xbd, 0x89, 0x86, 0x3b, 0xbe, 0xf8, 0x23, 0x25)
 #define LINUX_EFI_MEMRESERVE_TABLE_GUID		EFI_GUID(0x888eb0c6, 0x8ede, 0x4ff5,  0xa8, 0xf0, 0x9a, 0xee, 0x5c, 0xb9, 0x77, 0xc2)
 
 typedef struct {
@@ -983,6 +984,7 @@ extern struct efi {
 	unsigned long mem_attr_table;	/* memory attributes table */
 	unsigned long rng_seed;		/* UEFI firmware random seed */
 	unsigned long tpm_log;		/* TPM2 Event Log table */
+	unsigned long tpm_final_log;	/* TPM2 Final Events Log table */
 	unsigned long mem_reserve;	/* Linux EFI memreserve table */
 	efi_get_time_t *get_time;
 	efi_set_time_t *set_time;
@@ -1700,6 +1702,13 @@ struct linux_efi_tpm_eventlog {
 
 extern int efi_tpm_eventlog_init(void);
 
+struct efi_tcg2_final_events_table {
+	u64 version;
+	u64 nr_events;
+	u8 events[];
+};
+extern int efi_tpm_final_log_size;
+
 /*
  * efi_runtime_service() function identifiers.
  * "NONE" is used by efi_recover_from_page_fault() to check if the page
diff --git a/include/linux/tpm_eventlog.h b/include/linux/tpm_eventlog.h
index 6a86144e13f1..d889e12047d9 100644
--- a/include/linux/tpm_eventlog.h
+++ b/include/linux/tpm_eventlog.h
@@ -112,10 +112,27 @@ struct tcg_pcr_event2_head {
 	struct tpm_digest digests[];
 } __packed;
 
+struct tcg_algorithm_size {
+	u16 algorithm_id;
+	u16 algorithm_size;
+};
+
+struct tcg_algorithm_info {
+	u8 signature[16];
+	u32 platform_class;
+	u8 spec_version_minor;
+	u8 spec_version_major;
+	u8 spec_errata;
+	u8 uintn_size;
+	u32 number_of_algorithms;
+	struct tcg_algorithm_size digest_sizes[];
+};
+
 /**
  * __calc_tpm2_event_size - calculate the size of a TPM2 event log entry
  * @event:        Pointer to the event whose size should be calculated
  * @event_header: Pointer to the initial event containing the digest lengths
+ * @do_mapping:   Whether or not the event needs to be mapped
  *
  * The TPM2 event log format can contain multiple digests corresponding to
  * separate PCR banks, and also contains a variable length of the data that
@@ -131,10 +148,13 @@ struct tcg_pcr_event2_head {
  */
 
 static inline int __calc_tpm2_event_size(struct tcg_pcr_event2_head *event,
-					 struct tcg_pcr_event *event_header)
+					 struct tcg_pcr_event *event_header,
+					 bool do_mapping)
 {
 	struct tcg_efi_specid_event_head *efispecid;
 	struct tcg_event_field *event_field;
+	void *mapping = NULL;
+	int mapping_size;
 	void *marker;
 	void *marker_start;
 	u32 halg_size;
@@ -148,36 +168,96 @@ static inline int __calc_tpm2_event_size(struct tcg_pcr_event2_head *event,
 	marker = marker + sizeof(event->pcr_idx) + sizeof(event->event_type)
 		+ sizeof(event->count);
 
+	/* Map the event header */
+	if (do_mapping) {
+		mapping_size = marker - marker_start;
+		mapping = early_memremap((unsigned long)marker_start,
+					 mapping_size);
+		if (!mapping) {
+			size = 0;
+			goto out;
+		}
+	}
+
 	efispecid = (struct tcg_efi_specid_event_head *)event_header->event;
 
 	/* Check if event is malformed. */
-	if (event->count > efispecid->num_algs)
-		return 0;
+	if (event->count > efispecid->num_algs) {
+		size = 0;
+		goto out;
+	}
 
 	for (i = 0; i < event->count; i++) {
 		halg_size = sizeof(event->digests[i].alg_id);
+
+		/* Map the digest's algorithm identifier */
+		if (do_mapping) {
+			early_memunmap(mapping, mapping_size);
+			mapping_size = marker - marker_start + halg_size;
+			mapping = early_memremap((unsigned long)marker_start,
+						 mapping_size);
+			if (!mapping) {
+				size = 0;
+				goto out;
+			}
+		}
+
 		memcpy(&halg, marker, halg_size);
 		marker = marker + halg_size;
+
 		for (j = 0; j < efispecid->num_algs; j++) {
 			if (halg == efispecid->digest_sizes[j].alg_id) {
 				marker +=
 					efispecid->digest_sizes[j].digest_size;
+
+				/* Map the digest content itself */
+				if (do_mapping) {
+					early_memunmap(mapping, mapping_size);
+					mapping_size = marker - marker_start;
+					mapping = early_memremap((unsigned long)marker_start,
+						      mapping_size);
+					if (!mapping) {
+						size = 0;
+						goto out;
+					}
+				}
 				break;
 			}
 		}
 		/* Algorithm without known length. Such event is unparseable. */
-		if (j == efispecid->num_algs)
-			return 0;
+		if (j == efispecid->num_algs) {
+			size = 0;
+			goto out;
+		}
 	}
 
 	event_field = (struct tcg_event_field *)marker;
+
+	/*
+	 * Map the event size - we don't read from the event itself, so
+	 * we don't need to map it
+	 */
+	if (do_mapping) {
+		early_memunmap(marker_start, mapping_size);
+		mapping_size += sizeof(event_field->event_size);
+		mapping = early_memremap((unsigned long)marker_start,
+					 mapping_size);
+		if (!mapping) {
+			size = 0;
+			goto out;
+		}
+	}
+
 	marker = marker + sizeof(event_field->event_size)
 		+ event_field->event_size;
 	size = marker - marker_start;
 
 	if ((event->event_type == 0) && (event_field->event_size == 0))
-		return 0;
-
+		size = 0;
+out:
+	if (do_mapping)
+		early_memunmap(mapping, mapping_size);
 	return size;
 }
+
 #endif
