From a9addc3db4f8940ca38fb63c99fcab26126c88f0 Mon Sep 17 00:00:00 2001
From: Ilya Smirnov <ismirno@us.ibm.com>
Date: Tue, 11 Dec 2018 09:47:55 -0600
Subject: SMF: Logic For Creating Non-Secure HOMER Memory Space

For SMF to be enabled, HOMER requires a small amount of
non-SMF (unsecure) memory where the "jump to Ultravisor"
instruction can be put (to transition to UV mode). This
commit sets up a region of non-secure memory space for
that purpose.

Change-Id: Ib91ec69f49a4e174e65f3c2aad337a68eaa0803b
RTC: 205986
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/70699
Reviewed-by: Prem Shanker Jha <premjha2@in.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: Nicholas E. Bofferding <bofferdn@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
---
 src/include/usr/secureboot/smf.H | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/include/usr/secureboot')

diff --git a/src/include/usr/secureboot/smf.H b/src/include/usr/secureboot/smf.H
index 990bce09b..e062e56c9 100644
--- a/src/include/usr/secureboot/smf.H
+++ b/src/include/usr/secureboot/smf.H
@@ -27,6 +27,10 @@
 
 #include <errl/errlentry.H>
 #include <stdint.h>
+#include <limits.h>
+
+// The maximum size of the unsecure HOMER region in reserved memory
+#define MAX_UNSECURE_HOMER_SIZE (1 * PAGESIZE)
 
 namespace SMF_TRACE
 {
-- 
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