/* Initialize CPU feature data.  AArch64 version.

   This file is part of the GNU C Library.

   Copyright (C) 2017-2018 Free Software Foundation, Inc.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#ifndef _CPU_FEATURES_AARCH64_H

#define _CPU_FEATURES_AARCH64_H

#include <stdint.h>

#define MIDR_PARTNUM_SHIFT	4

#define MIDR_PARTNUM_MASK	(0xfff << MIDR_PARTNUM_SHIFT)

#define MIDR_PARTNUM(midr)	\

	(((midr) & MIDR_PARTNUM_MASK) >> MIDR_PARTNUM_SHIFT)

#define MIDR_ARCHITECTURE_SHIFT	16

#define MIDR_ARCHITECTURE_MASK	(0xf << MIDR_ARCHITECTURE_SHIFT)

#define MIDR_ARCHITECTURE(midr)	\

	(((midr) & MIDR_ARCHITECTURE_MASK) >> MIDR_ARCHITECTURE_SHIFT)

#define MIDR_VARIANT_SHIFT	20

#define MIDR_VARIANT_MASK	(0xf << MIDR_VARIANT_SHIFT)

#define MIDR_VARIANT(midr)	\

	(((midr) & MIDR_VARIANT_MASK) >> MIDR_VARIANT_SHIFT)

#define MIDR_IMPLEMENTOR_SHIFT	24

#define MIDR_IMPLEMENTOR_MASK	(0xff << MIDR_IMPLEMENTOR_SHIFT)

#define MIDR_IMPLEMENTOR(midr)	\

	(((midr) & MIDR_IMPLEMENTOR_MASK) >> MIDR_IMPLEMENTOR_SHIFT)

#define IS_THUNDERX(midr) (MIDR_IMPLEMENTOR(midr) == 'C'	\

			   && MIDR_PARTNUM(midr) == 0x0a1)

#define IS_THUNDERX2PA(midr) (MIDR_IMPLEMENTOR(midr) == 'B'     \

			   && MIDR_PARTNUM(midr) == 0x516)

#define IS_THUNDERX2(midr) (MIDR_IMPLEMENTOR(midr) == 'C'       \

			   && MIDR_PARTNUM(midr) == 0xaf)

#define IS_FALKOR(midr) (MIDR_IMPLEMENTOR(midr) == 'Q'			      \

                        && MIDR_PARTNUM(midr) == 0xc00)

#define IS_PHECDA(midr) (MIDR_IMPLEMENTOR(midr) == 'h'			      \

                        && MIDR_PARTNUM(midr) == 0x000)

struct cpu_features

{

  uint64_t midr_el1;

  unsigned zva_size;

};

#endif /* _CPU_FEATURES_AARCH64_H  */