1 // SPDX-License-Identifier: GPL-2.0+
3 * EFI application tables support
5 * Copyright (c) 2016 Alexander Graf
9 #include <efi_loader.h>
13 static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID;
16 * Install the SMBIOS table as a configuration table.
20 efi_status_t efi_smbios_register(void)
22 /* Map within the low 32 bits, to allow for 32bit SMBIOS tables */
26 /* Reserve 4kiB page for SMBIOS */
27 ret = efi_allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
28 EFI_RUNTIME_SERVICES_DATA, 1, &dmi);
29 if (ret != EFI_SUCCESS)
33 * Generate SMBIOS tables - we know that efi_allocate_pages() returns
34 * a 4k-aligned address, so it is safe to assume that
35 * write_smbios_table() will write the table at that address.
38 write_smbios_table(dmi);
40 /* And expose them to our EFI payload */
41 return efi_install_configuration_table(&smbios_guid,
42 (void *)(uintptr_t)dmi);