diff --git a/security/integrity/Kconfig b/security/integrity/Kconfig
index da9565891738..4b4d2aeef539 100644
--- a/security/integrity/Kconfig
+++ b/security/integrity/Kconfig
@@ -51,6 +51,17 @@ config INTEGRITY_TRUSTED_KEYRING
 	   .evm keyrings be signed by a key on the system trusted
 	   keyring.
 
+config INTEGRITY_PLATFORM_KEYRING
+        bool "Provide keyring for platform/firmware trusted keys"
+        depends on INTEGRITY_ASYMMETRIC_KEYS
+        depends on SYSTEM_BLACKLIST_KEYRING
+        depends on EFI
+        help
+         Provide a separate, distinct keyring for platform trusted keys, which
+         the kernel automatically populates during initialization from values
+         provided by the platform for verifying the kexec'ed kerned image
+         and, possibly, the initramfs signature.
+
 config INTEGRITY_AUDIT
 	bool "Enables integrity auditing support "
 	depends on AUDIT
diff --git a/security/integrity/Makefile b/security/integrity/Makefile
index 04d6e462b079..046ffc1bb42d 100644
--- a/security/integrity/Makefile
+++ b/security/integrity/Makefile
@@ -9,6 +9,7 @@ integrity-y := iint.o
 integrity-$(CONFIG_INTEGRITY_AUDIT) += integrity_audit.o
 integrity-$(CONFIG_INTEGRITY_SIGNATURE) += digsig.o
 integrity-$(CONFIG_INTEGRITY_ASYMMETRIC_KEYS) += digsig_asymmetric.o
+integrity-$(CONFIG_INTEGRITY_PLATFORM_KEYRING) += platform_certs/platform_keyring.o
 
 subdir-$(CONFIG_IMA)			+= ima
 obj-$(CONFIG_IMA)			+= ima/
diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c
index 5eacba858e4b..fef2a858300c 100644
--- a/security/integrity/digsig.c
+++ b/security/integrity/digsig.c
@@ -35,6 +35,7 @@ static const char * const keyring_name[INTEGRITY_KEYRING_MAX] = {
 	".ima",
 #endif
 	"_module",
+	".platform",
 };
 
 #ifdef CONFIG_IMA_KEYRINGS_PERMIT_SIGNED_BY_BUILTIN_OR_SECONDARY
@@ -73,12 +74,39 @@ int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen,
 	return -EOPNOTSUPP;
 }
 
-int __init integrity_init_keyring(const unsigned int id)
+static int __integrity_init_keyring(const unsigned int id, key_perm_t perm,
+				    struct key_restriction *restriction)
 {
 	const struct cred *cred = current_cred();
+	int err = 0;
+
+	keyring[id] = keyring_alloc(keyring_name[id], KUIDT_INIT(0),
+				    KGIDT_INIT(0), cred, perm,
+				    KEY_ALLOC_NOT_IN_QUOTA,
+				    restriction, NULL);
+	if (IS_ERR(keyring[id])) {
+		err = PTR_ERR(keyring[id]);
+		pr_info("Can't allocate %s keyring (%d)\n",
+			keyring_name[id], err);
+		keyring[id] = NULL;
+	}
+
+	return err;
+}
+
+int __init integrity_init_keyring(const unsigned int id)
+{
 	struct key_restriction *restriction;
+	key_perm_t perm;
 	int err = 0;
 
+	if (id == INTEGRITY_KEYRING_PLATFORM) {
+		restriction = NULL;
+		perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW
+			| KEY_USR_READ | KEY_USR_SEARCH;
+		goto out;
+	}
+
 	if (!IS_ENABLED(CONFIG_INTEGRITY_TRUSTED_KEYRING))
 		return 0;
 
@@ -87,20 +115,12 @@ int __init integrity_init_keyring(const unsigned int id)
 		return -ENOMEM;
 
 	restriction->check = restrict_link_to_ima;
+	perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW | KEY_USR_READ
+		| KEY_USR_WRITE | KEY_USR_SEARCH;
+
+out:
+	err = __integrity_init_keyring(id, perm, restriction);
 
-	keyring[id] = keyring_alloc(keyring_name[id], KUIDT_INIT(0),
-				    KGIDT_INIT(0), cred,
-				    ((KEY_POS_ALL & ~KEY_POS_SETATTR) |
-				     KEY_USR_VIEW | KEY_USR_READ |
-				     KEY_USR_WRITE | KEY_USR_SEARCH),
-				    KEY_ALLOC_NOT_IN_QUOTA,
-				    restriction, NULL);
-	if (IS_ERR(keyring[id])) {
-		err = PTR_ERR(keyring[id]);
-		pr_info("Can't allocate %s keyring (%d)\n",
-			keyring_name[id], err);
-		keyring[id] = NULL;
-	}
 	return err;
 }
 
diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h
index e60473b13a8d..c2332a44799e 100644
--- a/security/integrity/integrity.h
+++ b/security/integrity/integrity.h
@@ -142,7 +142,8 @@ int integrity_kernel_read(struct file *file, loff_t offset,
 #define INTEGRITY_KEYRING_EVM		0
 #define INTEGRITY_KEYRING_IMA		1
 #define INTEGRITY_KEYRING_MODULE	2
-#define INTEGRITY_KEYRING_MAX		3
+#define INTEGRITY_KEYRING_PLATFORM	3
+#define INTEGRITY_KEYRING_MAX		4
 
 extern struct dentry *integrity_dir;
 
diff --git a/security/integrity/platform_certs/platform_keyring.c b/security/integrity/platform_certs/platform_keyring.c
new file mode 100644
index 000000000000..dfc206bbe2ff
--- /dev/null
+++ b/security/integrity/platform_certs/platform_keyring.c
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Platform keyring for firmware/platform keys
+ *
+ * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#include <linux/export.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/cred.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include "../integrity.h"
+
+/*
+ * Create the trusted keyrings.
+ */
+static __init int platform_keyring_init(void)
+{
+	int rc;
+
+	rc = integrity_init_keyring(INTEGRITY_KEYRING_PLATFORM);
+	if (rc)
+		return rc;
+
+	pr_notice("Platform Keyring initialized\n");
+	return 0;
+}
+
+/*
+ * Must be initialised before we try and load the keys into the keyring.
+ */
+device_initcall(platform_keyring_init);
