| /* 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_FALKOR(midr) (MIDR_IMPLEMENTOR(midr) == 'Q' \ |
| && MIDR_PARTNUM(midr) == 0xc00) |
| |
| struct cpu_features |
| { |
| uint64_t midr_el1; |
| unsigned zva_size; |
| }; |
| |
| #endif /* _CPU_FEATURES_AARCH64_H */ |
