linux-kernel - [PATCH v2 2/3] vTPM: reformat event log to be byte-aligned

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1444263005-14775-3-git-send-email-honclo@linux.vnet.ibm.com>
Date:	Wed,  7 Oct 2015 20:10:04 -0400
From:	"Hon Ching(Vicky) Lo" <honclo@...ux.vnet.ibm.com>
To:	lo1@...ibm.com
Cc:	linux-kernel@...r.kernel.org,
	"Hon Ching(Vicky) Lo" <honclo@...ux.vnet.ibm.com>
Subject: [PATCH v2 2/3] vTPM: reformat event log to be byte-aligned

The event log generated by OpenFirmware in PowerPC is 4-byte aligned.
This patch reformats the log to be byte-aligned for the Linux client.

Signed-off-by: Hon Ching(Vicky) Lo <honclo@...ux.vnet.ibm.com>
---
 arch/powerpc/kernel/prom_init.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index b9b6bb1..8a5c248 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -1417,8 +1417,9 @@ static void __init prom_instantiate_sml(void)
 {
 	phandle ibmvtpm_node;
 	ihandle ibmvtpm_inst;
-	u32 entry = 0, size = 0;
+	u32 entry = 0, size = 0, succ = 0;
 	u64 base;
+	__be32 val;
 
 	prom_debug("prom_instantiate_sml: start...\n");
 
@@ -1433,6 +1434,16 @@ static void __init prom_instantiate_sml(void)
 		return;
 	}
 
+	if (prom_getprop(ibmvtpm_node, "ibm,sml-efi-reformat-supported",
+			 &val, sizeof(val)) != PROM_ERROR) {
+		if (call_prom_ret("call-method", 2, 2, &succ,
+				  ADDR("reformat-sml-to-efi-alignment"),
+				  ibmvtpm_inst) != 0 || succ == 0) {
+			prom_printf("Reformat SML to EFI alignment failed\n");
+			return;
+		}
+	}
+
 	if (call_prom_ret("call-method", 2, 2, &size,
 			  ADDR("sml-get-handover-size"),
 			  ibmvtpm_inst) != 0 || size == 0) {
-- 
1.7.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/