/* * Copyright (C) 2017 Google, Inc. * Thiebaud Weksteen <tweek@google.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/efi.h> #include <linux/init.h> #include <linux/memblock.h> #include <asm/early_ioremap.h> /* * Reserve the memory associated with the TPM Event Log configuration table. */ int __init efi_tpm_eventlog_init(void) { struct linux_efi_tpm_eventlog *log_tbl; unsigned int tbl_size; if (efi.tpm_log == EFI_INVALID_TABLE_ADDR) return 0; log_tbl = early_memremap(efi.tpm_log, sizeof(*log_tbl)); if (!log_tbl) { pr_err("Failed to map TPM Event Log table @ 0x%lx\n", efi.tpm_log); efi.tpm_log = EFI_INVALID_TABLE_ADDR; return -ENOMEM; } tbl_size = sizeof(*log_tbl) + log_tbl->size; memblock_reserve(efi.tpm_log, tbl_size); early_memunmap(log_tbl, sizeof(*log_tbl)); return 0; }