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TOMOYO Linux Cross Reference
Linux/arch/sh/include/asm/bugs.h

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #ifndef __ASM_SH_BUGS_H
  3 #define __ASM_SH_BUGS_H
  4 
  5 /*
  6  * This is included by init/main.c to check for architecture-dependent bugs.
  7  *
  8  * Needs:
  9  *      void check_bugs(void);
 10  */
 11 
 12 /*
 13  * I don't know of any Super-H bugs yet.
 14  */
 15 
 16 #include <asm/processor.h>
 17 
 18 extern void select_idle_routine(void);
 19 
 20 static void __init check_bugs(void)
 21 {
 22         extern unsigned long loops_per_jiffy;
 23         char *p = &init_utsname()->machine[2]; /* "sh" */
 24 
 25         select_idle_routine();
 26 
 27         current_cpu_data.loops_per_jiffy = loops_per_jiffy;
 28 
 29         switch (current_cpu_data.family) {
 30         case CPU_FAMILY_SH2:
 31                 *p++ = '2';
 32                 break;
 33         case CPU_FAMILY_SH2A:
 34                 *p++ = '2';
 35                 *p++ = 'a';
 36                 break;
 37         case CPU_FAMILY_SH3:
 38                 *p++ = '3';
 39                 break;
 40         case CPU_FAMILY_SH4:
 41                 *p++ = '4';
 42                 break;
 43         case CPU_FAMILY_SH4A:
 44                 *p++ = '4';
 45                 *p++ = 'a';
 46                 break;
 47         case CPU_FAMILY_SH4AL_DSP:
 48                 *p++ = '4';
 49                 *p++ = 'a';
 50                 *p++ = 'l';
 51                 *p++ = '-';
 52                 *p++ = 'd';
 53                 *p++ = 's';
 54                 *p++ = 'p';
 55                 break;
 56         case CPU_FAMILY_SH5:
 57                 *p++ = '6';
 58                 *p++ = '4';
 59                 break;
 60         case CPU_FAMILY_UNKNOWN:
 61                 /*
 62                  * Specifically use CPU_FAMILY_UNKNOWN rather than
 63                  * default:, so we're able to have the compiler whine
 64                  * about unhandled enumerations.
 65                  */
 66                 break;
 67         }
 68 
 69         printk("CPU: %s\n", get_cpu_subtype(&current_cpu_data));
 70 
 71 #ifndef __LITTLE_ENDIAN__
 72         /* 'eb' means 'Endian Big' */
 73         *p++ = 'e';
 74         *p++ = 'b';
 75 #endif
 76         *p = '\0';
 77 }
 78 #endif /* __ASM_SH_BUGS_H */
 79 

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