1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * This is included by init/main.c to check for architecture-dependent bugs. 4 * 5 * Copyright (C) 2007 Maciej W. Rozycki 6 * 7 * Needs: 8 * void check_bugs(void); 9 */ 10 #ifndef _ASM_BUGS_H 11 #define _ASM_BUGS_H 12 13 #include <linux/bug.h> 14 #include <linux/delay.h> 15 #include <linux/smp.h> 16 17 #include <asm/cpu.h> 18 #include <asm/cpu-info.h> 19 20 extern int daddiu_bug; 21 22 extern void check_bugs64_early(void); 23 24 extern void check_bugs32(void); 25 extern void check_bugs64(void); 26 27 static inline void check_bugs_early(void) 28 { 29 if (IS_ENABLED(CONFIG_CPU_R4X00_BUGS64)) 30 check_bugs64_early(); 31 } 32 33 static inline void check_bugs(void) 34 { 35 unsigned int cpu = smp_processor_id(); 36 37 cpu_data[cpu].udelay_val = loops_per_jiffy; 38 check_bugs32(); 39 40 if (IS_ENABLED(CONFIG_CPU_R4X00_BUGS64)) 41 check_bugs64(); 42 } 43 44 static inline int r4k_daddiu_bug(void) 45 { 46 if (!IS_ENABLED(CONFIG_CPU_R4X00_BUGS64)) 47 return 0; 48 49 WARN_ON(daddiu_bug < 0); 50 return daddiu_bug != 0; 51 } 52 53 #endif /* _ASM_BUGS_H */ 54