Read the HW Key Hash from a Processor's SBE Seeprom

This commit adds an interface to read the HW Key Hash located in the HBBL
section of each Processor's two SBE Seeproms.

Change-Id: I906434269746c296c646f7b0594575c58b145294
RTC: 167585
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/38465
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Reviewed-by: Nicholas E. Bofferding <bofferdn@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Martin Gloff <mgloff@us.ibm.com>
Reviewed-by: Stephen M. Cprek <smcprek@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

1 files changed, 24 insertions, 1 deletions

diff --git a/src/include/usr/pnor/ecc.H b/src/include/usr/pnor/ecc.H
index 3f4b7cef6..80c993c96 100644
--- a/src/include/usr/pnor/ecc.H
+++ b/src/include/usr/pnor/ecc.H
@@ -5,7 +5,9 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* COPYRIGHT International Business Machines Corp. 2013,2014              */
+/* Contributors Listed Below - COPYRIGHT 2013,2017                        */
+/* [+] International Business Machines Corp.                              */
+/*                                                                        */
 /*                                                                        */
 /* Licensed under the Apache License, Version 2.0 (the "License");        */
 /* you may not use this file except in compliance with the License.       */
@@ -25,6 +27,10 @@
 
 #include <stdint.h>
 
+#ifdef __HOSTBOOT_MODULE
+#include <assert.h>
+#endif
+
 /** @file ecc.H
  *  @brief Interfaces for the P8 8-byte ECC algorithm.
  */
@@ -78,6 +84,23 @@ namespace ECC
     eccStatus removeECC(uint8_t* io_src,
                         uint8_t* o_dst, size_t i_dstSz);
 
+#ifdef __HOSTBOOT_MODULE
+    /** Given the size of Data, return the size of Data+ECC
+     *
+     *  @param[in] i_sizeWithoutEcc Size in bytes of data without ECC
+     *
+     *  @note i_sizeWithoutEcc must be a multiple of 8 bytes or will assert
+     *
+     * @return size of data with ECC
+     */
+    inline size_t sizeWithEcc(const size_t i_sizeWithoutEcc)
+    {
+        bool noRemainder = (i_sizeWithoutEcc % 8) == 0 ? true : false;
+        assert (noRemainder, "PNOR::ECC::sizeWithEcc: input needs to be multiple of 8 bytes");
+        return (i_sizeWithoutEcc * 9) / 8;
+    }
+#endif
+
 }
 }