From b4ed0469d00ad7ad051e5acbdb3e7587fd0221e2 Mon Sep 17 00:00:00 2001
From: "Hon Ching \\(Vicky\\) Lo" <honclo@linux.vnet.ibm.com>
Date: Wed, 7 Oct 2015 20:11:53 -0400
Subject: 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@linux.vnet.ibm.com>
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index a8af4d4..7b2e452 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -1425,8 +1425,9 @@ 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");
 
@@ -1441,6 +1442,16 @@ 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) {
-- 
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