diff options
Diffstat (limited to 'src/usr/secureboot/base/header.C')
-rw-r--r-- | src/usr/secureboot/base/header.C | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/usr/secureboot/base/header.C b/src/usr/secureboot/base/header.C new file mode 100644 index 000000000..00f808e1b --- /dev/null +++ b/src/usr/secureboot/base/header.C @@ -0,0 +1,57 @@ +/* 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; + } +} |