1 files changed, 0 insertions, 209 deletions
diff --git a/drivers/char/tpm/tpm2_eventlog.c b/drivers/char/tpm/tpm2_eventlog.c
deleted file mode 100644
index 1ce4411292ba9..0000000000000
--- a/drivers/char/tpm/tpm2_eventlog.c
+++ /dev/null
@@ -1,209 +0,0 @@
-/*
- * Copyright (C) 2016 IBM Corporation
- *
- * Authors:
- *      Nayna Jain <nayna@linux.vnet.ibm.com>
- *
- * Access to TPM 2.0 event log as written by Firmware.
- * It assumes that writer of event log has followed TCG Specification
- * for Family "2.0" and written the event data in little endian.
- * With that, it doesn't need any endian conversion for structure
- * content.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/seq_file.h>
-#include <linux/fs.h>
-#include <linux/security.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/tpm_eventlog.h>
-
-#include "tpm.h"
-
-/*
- * calc_tpm2_event_size() - calculate the event size, where event
- * is an entry in the TPM 2.0 event log. The event is of type Crypto
- * Agile Log Entry Format as defined in TCG EFI Protocol Specification
- * Family "2.0".
-
- * @event: event whose size is to be calculated.
- * @event_header: the first event in the event log.
- *
- * Returns size of the event. If it is an invalid event, returns 0.
- */
-static int calc_tpm2_event_size(struct tcg_pcr_event2 *event,
-				struct tcg_pcr_event *event_header)
-{
-	struct tcg_efi_specid_event *efispecid;
-	struct tcg_event_field *event_field;
-	void *marker;
-	void *marker_start;
-	u32 halg_size;
-	size_t size;
-	u16 halg;
-	int i;
-	int j;
-
-	marker = event;
-	marker_start = marker;
-	marker = marker + sizeof(event->pcr_idx) + sizeof(event->event_type)
-		+ sizeof(event->count);
-
-	efispecid = (struct tcg_efi_specid_event *)event_header->event;
-
-	/* Check if event is malformed. */
-	if (event->count > efispecid->num_algs)
-		return 0;
-
-	for (i = 0; i < event->count; i++) {
-		halg_size = sizeof(event->digests[i].alg_id);
-		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;
-				break;
-			}
-		}
-		/* Algorithm without known length. Such event is unparseable. */
-		if (j == efispecid->num_algs)
-			return 0;
-	}
-
-	event_field = (struct tcg_event_field *)marker;
-	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;
-
-	return size;
-}
-
-static void *tpm2_bios_measurements_start(struct seq_file *m, loff_t *pos)
-{
-	struct tpm_chip *chip = m->private;
-	struct tpm_bios_log *log = &chip->log;
-	void *addr = log->bios_event_log;
-	void *limit = log->bios_event_log_end;
-	struct tcg_pcr_event *event_header;
-	struct tcg_pcr_event2 *event;
-	size_t size;
-	int i;
-
-	event_header = addr;
-	size = sizeof(struct tcg_pcr_event) - sizeof(event_header->event)
-		+ event_header->event_size;
-
-	if (*pos == 0) {
-		if (addr + size < limit) {
-			if ((event_header->event_type == 0) &&
-			    (event_header->event_size == 0))
-				return NULL;
-			return SEQ_START_TOKEN;
-		}
-	}
-
-	if (*pos > 0) {
-		addr += size;
-		event = addr;
-		size = calc_tpm2_event_size(event, event_header);
-		if ((addr + size >=  limit) || (size == 0))
-			return NULL;
-	}
-
-	for (i = 0; i < (*pos - 1); i++) {
-		event = addr;
-		size = calc_tpm2_event_size(event, event_header);
-
-		if ((addr + size >= limit) || (size == 0))
-			return NULL;
-		addr += size;
-	}
-
-	return addr;
-}
-
-static void *tpm2_bios_measurements_next(struct seq_file *m, void *v,
-					 loff_t *pos)
-{
-	struct tcg_pcr_event *event_header;
-	struct tcg_pcr_event2 *event;
-	struct tpm_chip *chip = m->private;
-	struct tpm_bios_log *log = &chip->log;
-	void *limit = log->bios_event_log_end;
-	size_t event_size;
-	void *marker;
-
-	event_header = log->bios_event_log;
-
-	if (v == SEQ_START_TOKEN) {
-		event_size = sizeof(struct tcg_pcr_event) -
-			sizeof(event_header->event) + event_header->event_size;
-		marker = event_header;
-	} else {
-		event = v;
-		event_size = calc_tpm2_event_size(event, event_header);
-		if (event_size == 0)
-			return NULL;
-		marker = event;
-	}
-
-	marker = marker + event_size;
-	if (marker >= limit)
-		return NULL;
-	v = marker;
-	event = v;
-
-	event_size = calc_tpm2_event_size(event, event_header);
-	if (((v + event_size) >= limit) || (event_size == 0))
-		return NULL;
-
-	(*pos)++;
-	return v;
-}
-
-static void tpm2_bios_measurements_stop(struct seq_file *m, void *v)
-{
-}
-
-static int tpm2_binary_bios_measurements_show(struct seq_file *m, void *v)
-{
-	struct tpm_chip *chip = m->private;
-	struct tpm_bios_log *log = &chip->log;
-	struct tcg_pcr_event *event_header = log->bios_event_log;
-	struct tcg_pcr_event2 *event = v;
-	void *temp_ptr;
-	size_t size;
-
-	if (v == SEQ_START_TOKEN) {
-		size = sizeof(struct tcg_pcr_event) -
-			sizeof(event_header->event) + event_header->event_size;
-
-		temp_ptr = event_header;
-
-		if (size > 0)
-			seq_write(m, temp_ptr, size);
-	} else {
-		size = calc_tpm2_event_size(event, event_header);
-		temp_ptr = event;
-		if (size > 0)
-			seq_write(m, temp_ptr, size);
-	}
-
-	return 0;
-}
-
-const struct seq_operations tpm2_binary_b_measurements_seqops = {
-	.start = tpm2_bios_measurements_start,
-	.next = tpm2_bios_measurements_next,
-	.stop = tpm2_bios_measurements_stop,
-	.show = tpm2_binary_bios_measurements_show,
-};