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/*
* Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <errno.h>
#include <ipxe/smbios.h>
#include <ipxe/efi/efi.h>
#include <ipxe/efi/Guid/SmBios.h>
/** @file
*
* iPXE SMBIOS API for EFI
*
*/
/** SMBIOS configuration table */
static struct smbios_entry *smbios_entry;
EFI_USE_TABLE ( SMBIOS_TABLE, &smbios_entry, 0 );
/** SMBIOS configuration table */
static struct smbios3_entry *smbios3_entry;
EFI_USE_TABLE ( SMBIOS3_TABLE, &smbios3_entry, 0 );
/**
* Find SMBIOS
*
* @v smbios SMBIOS entry point descriptor structure to fill in
* @ret rc Return status code
*/
static int efi_find_smbios ( struct smbios *smbios ) {
/* Use 64-bit table if present */
if ( smbios3_entry && ( smbios3_entry->signature == SMBIOS3_SIGNATURE ) ) {
smbios->address = phys_to_user ( smbios3_entry->smbios_address );
smbios->len = smbios3_entry->smbios_len;
smbios->count = 0;
smbios->version =
SMBIOS_VERSION ( smbios3_entry->major, smbios3_entry->minor );
DBG ( "Found 64-bit SMBIOS v%d.%d entry point at %p (%lx+%zx)\n",
smbios3_entry->major, smbios3_entry->minor, smbios3_entry,
user_to_phys ( smbios->address, 0 ), smbios->len );
return 0;
}
/* Otherwise, use 32-bit table if present */
if ( smbios_entry && ( smbios_entry->signature == SMBIOS_SIGNATURE ) ) {
smbios->address = phys_to_user ( smbios_entry->smbios_address );
smbios->len = smbios_entry->smbios_len;
smbios->count = smbios_entry->smbios_count;
smbios->version =
SMBIOS_VERSION ( smbios_entry->major, smbios_entry->minor );
DBG ( "Found 32-bit SMBIOS v%d.%d entry point at %p (%lx+%zx)\n",
smbios_entry->major, smbios_entry->minor, smbios_entry,
user_to_phys ( smbios->address, 0 ), smbios->len );
return 0;
}
DBG ( "No SMBIOS table provided\n" );
return -ENODEV;
}
PROVIDE_SMBIOS ( efi, find_smbios, efi_find_smbios );
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