| /* |
| * 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; |
| } |
| |