arch/cris/arch-v10/kernel/setup.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *
   4  *  linux/arch/cris/arch-v10/kernel/setup.c
   5  *
   6  *  Copyright (C) 1995  Linus Torvalds
   7  *  Copyright (c) 2001-2002  Axis Communications AB
   8  */
   9
  10 /*
  11  * This file handles the architecture-dependent parts of initialization
  12  */
  13
  14 #include <linux/seq_file.h>
  15 #include <linux/proc_fs.h>
  16 #include <linux/delay.h>
  17 #include <linux/param.h>
  18 #include <arch/system.h>
  19
  20 #ifdef CONFIG_PROC_FS
  21 #define HAS_FPU         0x0001
  22 #define HAS_MMU         0x0002
  23 #define HAS_ETHERNET100 0x0004
  24 #define HAS_TOKENRING   0x0008
  25 #define HAS_SCSI        0x0010
  26 #define HAS_ATA         0x0020
  27 #define HAS_USB         0x0040
  28 #define HAS_IRQ_BUG     0x0080
  29 #define HAS_MMU_BUG     0x0100
  30
  31 static struct cpu_info {
  32         char *model;
  33         unsigned short cache;
  34         unsigned short flags;
  35 } cpu_info[] = {
  36         /* The first four models will never ever run this code and are
  37            only here for display.  */
  38         { "ETRAX 1",         0, 0 },
  39         { "ETRAX 2",         0, 0 },
  40         { "ETRAX 3",         0, HAS_TOKENRING },
  41         { "ETRAX 4",         0, HAS_TOKENRING | HAS_SCSI },
  42         { "Unknown",         0, 0 },
  43         { "Unknown",         0, 0 },
  44         { "Unknown",         0, 0 },
  45         { "Simulator",       8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA },
  46         { "ETRAX 100",       8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA | HAS_IRQ_BUG },
  47         { "ETRAX 100",       8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA },
  48         { "ETRAX 100LX",     8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA | HAS_USB | HAS_MMU | HAS_MMU_BUG },
  49         { "ETRAX 100LX v2",  8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA | HAS_USB | HAS_MMU  },
  50         { "Unknown",         0, 0 }  /* This entry MUST be the last */
  51 };
  52
  53 int show_cpuinfo(struct seq_file *m, void *v)
  54 {
  55         unsigned long revision;
  56         struct cpu_info *info;
  57
  58         /* read the version register in the CPU and print some stuff */
  59
  60         revision = rdvr();
  61
  62         if (revision >= ARRAY_SIZE(cpu_info))
  63                 info = &cpu_info[ARRAY_SIZE(cpu_info) - 1];
  64         else
  65                 info = &cpu_info[revision];
  66
  67         seq_printf(m,
  68                    "processor\t: 0\n"
  69                    "cpu\t\t: CRIS\n"
  70                    "cpu revision\t: %lu\n"
  71                    "cpu model\t: %s\n"
  72                    "cache size\t: %d kB\n"
  73                    "fpu\t\t: %s\n"
  74                    "mmu\t\t: %s\n"
  75                    "mmu DMA bug\t: %s\n"
  76                    "ethernet\t: %s Mbps\n"
  77                    "token ring\t: %s\n"
  78                    "scsi\t\t: %s\n"
  79                    "ata\t\t: %s\n"
  80                    "usb\t\t: %s\n"
  81                    "bogomips\t: %lu.%02lu\n",
  82
  83                    revision,
  84                    info->model,
  85                    info->cache,
  86                    info->flags & HAS_FPU ? "yes" : "no",
  87                    info->flags & HAS_MMU ? "yes" : "no",
  88                    info->flags & HAS_MMU_BUG ? "yes" : "no",
  89                    info->flags & HAS_ETHERNET100 ? "10/100" : "10",
  90                    info->flags & HAS_TOKENRING ? "4/16 Mbps" : "no",
  91                    info->flags & HAS_SCSI ? "yes" : "no",
  92                    info->flags & HAS_ATA ? "yes" : "no",
  93                    info->flags & HAS_USB ? "yes" : "no",
  94                    (loops_per_jiffy * HZ + 500) / 500000,
  95                    ((loops_per_jiffy * HZ + 500) / 5000) % 100);
  96
  97         return 0;
  98 }
  99
 100 #endif /* CONFIG_PROC_FS */
 101
 102 void
 103 show_etrax_copyright(void)
 104 {
 105         printk(KERN_INFO
 106                "Linux/CRIS port on ETRAX 100LX (c) 2001 Axis Communications AB\n");
 107 }