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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/secureboot/base/header.C $ */
/* */
/* IBM CONFIDENTIAL */
/* */
/* COPYRIGHT International Business Machines Corp. 2013 */
/* */
/* p1 */
/* */
/* Object Code Only (OCO) source materials */
/* Licensed Internal Code Source Materials */
/* IBM HostBoot Licensed Internal Code */
/* */
/* The source code for this program is not published or otherwise */
/* divested of its trade secrets, irrespective of what has been */
/* deposited with the U.S. Copyright Office. */
/* */
/* Origin: 30 */
/* */
/* 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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