From: Ross Philipson <ross.philipson@oracle.com>
To: linux-kernel@vger.kernel.org, x86@kernel.org,
iommu@lists.linux-foundation.org,
linux-integrity@vger.kernel.org, linux-doc@vger.kernel.org
Cc: ross.philipson@oracle.com, dpsmith@apertussolutions.com,
tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
hpa@zytor.com, luto@amacapital.net, kanth.ghatraju@oracle.com,
trenchboot-devel@googlegroups.com
Subject: [PATCH v4 14/14] tpm: Allow locality 2 to be set when initializing the TPM for Secure Launch
Date: Fri, 27 Aug 2021 09:28:37 -0400 [thread overview]
Message-ID: <1630070917-9896-15-git-send-email-ross.philipson@oracle.com> (raw)
In-Reply-To: <1630070917-9896-1-git-send-email-ross.philipson@oracle.com>
The Secure Launch MLE environment uses PCRs that are only accessible from
the DRTM locality 2. By default the TPM drivers always initialize the
locality to 0. When a Secure Launch is in progress, initialize the
locality to 2.
Signed-off-by: Ross Philipson <ross.philipson@oracle.com>
---
drivers/char/tpm/tpm-chip.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
index ddaeceb..ce0a3b7 100644
--- a/drivers/char/tpm/tpm-chip.c
+++ b/drivers/char/tpm/tpm-chip.c
@@ -23,6 +23,7 @@
#include <linux/major.h>
#include <linux/tpm_eventlog.h>
#include <linux/hw_random.h>
+#include <linux/slaunch.h>
#include "tpm.h"
DEFINE_IDR(dev_nums_idr);
@@ -34,12 +35,18 @@
static int tpm_request_locality(struct tpm_chip *chip)
{
+ int locality;
int rc;
if (!chip->ops->request_locality)
return 0;
- rc = chip->ops->request_locality(chip, 0);
+ if (slaunch_get_flags() & SL_FLAG_ACTIVE)
+ locality = 2;
+ else
+ locality = 0;
+
+ rc = chip->ops->request_locality(chip, locality);
if (rc < 0)
return rc;
--
1.8.3.1
next prev parent reply other threads:[~2021-08-27 13:21 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-27 13:28 [PATCH v4 00/14] x86: Trenchboot secure dynamic launch Linux kernel support Ross Philipson
2021-08-27 13:28 ` [PATCH v4 01/14] x86/boot: Fix memremap of setup_indirect structures Ross Philipson
2021-09-22 12:01 ` Daniel Kiper
2021-08-27 13:28 ` [PATCH v4 02/14] x86/boot: Add setup_indirect support in early_memremap_is_setup_data Ross Philipson
2021-09-22 12:03 ` Daniel Kiper
2021-08-27 13:28 ` [PATCH v4 03/14] x86/boot: Place kernel_info at a fixed offset Ross Philipson
2021-08-27 13:28 ` [PATCH v4 04/14] Documentation/x86: Secure Launch kernel documentation Ross Philipson
2021-12-02 17:26 ` Robin Murphy
2021-12-03 15:47 ` Ross Philipson
2021-12-03 16:03 ` Robin Murphy
2021-12-03 17:48 ` Ross Philipson
2021-08-27 13:28 ` [PATCH v4 05/14] x86: Secure Launch Kconfig Ross Philipson
2021-08-27 13:28 ` [PATCH v4 06/14] x86: Secure Launch main header file Ross Philipson
2021-08-27 13:28 ` [PATCH v4 07/14] x86: Add early SHA support for Secure Launch early measurements Ross Philipson
2021-08-27 13:28 ` [PATCH v4 08/14] x86: Secure Launch kernel early boot stub Ross Philipson
2021-08-27 13:28 ` [PATCH v4 09/14] x86: Secure Launch kernel late " Ross Philipson
2021-08-27 13:28 ` [PATCH v4 10/14] x86: Secure Launch SMP bringup support Ross Philipson
2021-08-27 13:28 ` [PATCH v4 11/14] kexec: Secure Launch kexec SEXIT support Ross Philipson
2021-08-27 13:28 ` [PATCH v4 12/14] reboot: Secure Launch SEXIT support on reboot paths Ross Philipson
2021-08-27 13:28 ` [PATCH v4 13/14] x86: Secure Launch late initcall platform module Ross Philipson
2021-08-27 13:28 ` Ross Philipson [this message]
2021-08-27 13:30 ` [PATCH v4 14/14] tpm: Allow locality 2 to be set when initializing the TPM for Secure Launch Jason Gunthorpe
2021-08-30 19:45 ` Daniel P. Smith
2021-12-01 1:06 ` [PATCH v4 00/14] x86: Trenchboot secure dynamic launch Linux kernel support Paul Moore
2021-12-02 16:09 ` Daniel P. Smith
2021-12-06 20:56 ` Paul Moore
2022-01-21 21:39 ` Paul Moore
2022-02-15 15:50 ` Daniel P. Smith
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