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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/include/linux/tboot.h
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@@ -1,23 +1,10 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * tboot.h: shared data structure with tboot and kernel and functions
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  *          used by kernel for runtime support of Intel(R) Trusted
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  *          Execution Technology
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  *
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  * Copyright (c) 2006-2009, Intel Corporation
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms and conditions of the GNU General Public License,
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- * version 2, as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope it will be useful, but WITHOUT
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- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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- * more details.
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- *
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- * You should have received a copy of the GNU General Public License along with
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- * this program; if not, write to the Free Software Foundation, Inc.,
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- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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- *
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  */
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 #ifndef _LINUX_TBOOT_H
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@@ -57,7 +44,7 @@
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 /*
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  * combines Sx info from FADT and FACS tables per ACPI 2.0+ spec
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- * (http://www.acpi.info/)
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+ * (https://uefi.org/specifications)
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  */
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 struct tboot_acpi_sleep_info {
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 	struct tboot_acpi_generic_address pm1a_cnt_blk;
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@@ -134,13 +121,7 @@
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 #define TBOOT_UUID	{0xff, 0x8d, 0x3c, 0x66, 0xb3, 0xe8, 0x82, 0x4b, 0xbf,\
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 			 0xaa, 0x19, 0xea, 0x4d, 0x5, 0x7a, 0x8}
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-extern struct tboot *tboot;
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-
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-static inline int tboot_enabled(void)
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-{
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-	return tboot != NULL;
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-}
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-
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+bool tboot_enabled(void);
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 extern void tboot_probe(void);
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 extern void tboot_shutdown(u32 shutdown_type);
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 extern struct acpi_table_header *tboot_get_dmar_table(