/* * EFI application tables support * * Copyright (c) 2016 Alexander Graf * * SPDX-License-Identifier: GPL-2.0+ */ #include #include #include #include static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID; void efi_smbios_register(void) { /* Map within the low 32 bits, to allow for 32bit SMBIOS tables */ uint64_t dmi = 0xffffffff; /* Reserve 4kb for SMBIOS */ uint64_t pages = 1; int memtype = EFI_RUNTIME_SERVICES_DATA; if (efi_allocate_pages(1, memtype, pages, &dmi) != EFI_SUCCESS) return; /* Generate SMBIOS tables */ write_smbios_table(dmi); /* And expose them to our EFI payload */ efi_install_configuration_table(&smbios_guid, (void*)(uintptr_t)dmi); }