1 /* 2 * Contains CPU feature definitions 3 * 4 * Copyright (C) 2015 ARM Ltd. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. 17 */ 18 19 #define pr_fmt(fmt) "alternatives: " fmt 20 21 #include <linux/types.h> 22 #include <asm/cpu.h> 23 #include <asm/cpufeature.h> 24 25 static const struct arm64_cpu_capabilities arm64_features[] = { 26 {}, 27 }; 28 29 void check_cpu_capabilities(const struct arm64_cpu_capabilities *caps, 30 const char *info) 31 { 32 int i; 33 34 for (i = 0; caps[i].desc; i++) { 35 if (!caps[i].matches(&caps[i])) 36 continue; 37 38 if (!cpus_have_cap(caps[i].capability)) 39 pr_info("%s %s\n", info, caps[i].desc); 40 cpus_set_cap(caps[i].capability); 41 } 42 } 43 44 void check_local_cpu_features(void) 45 { 46 check_cpu_capabilities(arm64_features, "detected feature"); 47 } 48