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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/secureboot/base/header.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* COPYRIGHT International Business Machines Corp. 2013,2014 */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#include "header.H"
#include <sys/mm.h>
#include <sys/mmio.h>
#include <kernel/console.H>
namespace SECUREBOOT
{
void Header::loadBaseHeader()
{
// Calculate original address of the secureboot header.
// Zero is purposefully not mapped into the VMM tables, so we
// can't use that for the virtual-to-real translation. Since
// this object is in the base image, EA = HRMOR | PA, so we can
// use PA - EA to find the HRMOR.
uint64_t addr = mm_virt_to_phys(this) -
reinterpret_cast<uint64_t>(this);
addr -= PAGESIZE;
// Map in the header.
void* origHeader = mm_block_map(reinterpret_cast<void*>(addr),
PAGESIZE);
// Copy header to a save area.
// In the future we might want to just extract pieces of the
// header. The header is important when we start updating
// the TPM PCRs.
iv_data = malloc(PAGESIZE);
memcpy(iv_data, origHeader, PAGESIZE);
// Unmap the header.
mm_block_unmap(origHeader);
return;
}
}
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