1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * This is included by init/main.c to check for architecture-dependent bugs. 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2007 Maciej W. Rozycki 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Needs: 8*4882a593Smuzhiyun * void check_bugs(void); 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun #ifndef _ASM_BUGS_H 11*4882a593Smuzhiyun #define _ASM_BUGS_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <linux/bug.h> 14*4882a593Smuzhiyun #include <linux/delay.h> 15*4882a593Smuzhiyun #include <linux/smp.h> 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun #include <asm/cpu.h> 18*4882a593Smuzhiyun #include <asm/cpu-info.h> 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun extern int daddiu_bug; 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun extern void check_bugs64_early(void); 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun extern void check_bugs32(void); 25*4882a593Smuzhiyun extern void check_bugs64(void); 26*4882a593Smuzhiyun check_bugs_early(void)27*4882a593Smuzhiyunstatic inline void check_bugs_early(void) 28*4882a593Smuzhiyun { 29*4882a593Smuzhiyun if (IS_ENABLED(CONFIG_CPU_R4X00_BUGS64)) 30*4882a593Smuzhiyun check_bugs64_early(); 31*4882a593Smuzhiyun } 32*4882a593Smuzhiyun check_bugs(void)33*4882a593Smuzhiyunstatic inline void check_bugs(void) 34*4882a593Smuzhiyun { 35*4882a593Smuzhiyun unsigned int cpu = smp_processor_id(); 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun cpu_data[cpu].udelay_val = loops_per_jiffy; 38*4882a593Smuzhiyun check_bugs32(); 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun if (IS_ENABLED(CONFIG_CPU_R4X00_BUGS64)) 41*4882a593Smuzhiyun check_bugs64(); 42*4882a593Smuzhiyun } 43*4882a593Smuzhiyun r4k_daddiu_bug(void)44*4882a593Smuzhiyunstatic inline int r4k_daddiu_bug(void) 45*4882a593Smuzhiyun { 46*4882a593Smuzhiyun if (!IS_ENABLED(CONFIG_CPU_R4X00_BUGS64)) 47*4882a593Smuzhiyun return 0; 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun WARN_ON(daddiu_bug < 0); 50*4882a593Smuzhiyun return daddiu_bug != 0; 51*4882a593Smuzhiyun } 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun #endif /* _ASM_BUGS_H */ 54