arch/microblaze/kernel/cpu/cpuinfo.c

   1 /*
   2  * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
   3  * Copyright (C) 2007-2009 PetaLogix
   4  * Copyright (C) 2007 John Williams <john.williams@petalogix.com>
   5  *
   6  * This file is subject to the terms and conditions of the GNU General Public
   7  * License. See the file "COPYING" in the main directory of this archive
   8  * for more details.
   9  */
  10
  11 #include <linux/init.h>
  12 #include <linux/slab.h>
  13 #include <asm/cpuinfo.h>
  14 #include <asm/pvr.h>
  15
  16 const struct cpu_ver_key cpu_ver_lookup[] = {
  17         /* These key value are as per MBV field in PVR0 */
  18         {"5.00.a", 0x01},
  19         {"5.00.b", 0x02},
  20         {"5.00.c", 0x03},
  21         {"6.00.a", 0x04},
  22         {"6.00.b", 0x06},
  23         {"7.00.a", 0x05},
  24         {"7.00.b", 0x07},
  25         {"7.10.a", 0x08},
  26         {"7.10.b", 0x09},
  27         {"7.10.c", 0x0a},
  28         {"7.10.d", 0x0b},
  29         /* FIXME There is no keycode defined in MBV for these versions */
  30         {"2.10.a", 0x10},
  31         {"3.00.a", 0x20},
  32         {"4.00.a", 0x30},
  33         {"4.00.b", 0x40},
  34         {NULL, 0},
  35 };
  36
  37 /*
  38  * FIXME Not sure if the actual key is defined by Xilinx in the PVR
  39  */
  40 const struct family_string_key family_string_lookup[] = {
  41         {"virtex2", 0x4},
  42         {"virtex2pro", 0x5},
  43         {"spartan3", 0x6},
  44         {"virtex4", 0x7},
  45         {"virtex5", 0x8},
  46         {"spartan3e", 0x9},
  47         {"spartan3a", 0xa},
  48         {"spartan3an", 0xb},
  49         {"spartan3adsp", 0xc},
  50         /* FIXME There is no key code defined for spartan2 */
  51         {"spartan2", 0xf0},
  52         {NULL, 0},
  53 };
  54
  55 struct cpuinfo cpuinfo;
  56
  57 void __init setup_cpuinfo(void)
  58 {
  59         struct device_node *cpu = NULL;
  60
  61         cpu = (struct device_node *) of_find_node_by_type(NULL, "cpu");
  62         if (!cpu)
  63                 printk(KERN_ERR "You don't have cpu!!!\n");
  64
  65         printk(KERN_INFO "%s: initialising\n", __func__);
  66
  67         switch (cpu_has_pvr()) {
  68         case 0:
  69                 printk(KERN_WARNING
  70                         "%s: No PVR support. Using static CPU info from FDT\n",
  71                         __func__);
  72                 set_cpuinfo_static(&cpuinfo, cpu);
  73                 break;
  74 /* FIXME I found weird behavior with MB 7.00.a/b 7.10.a
  75  * please do not use FULL PVR with MMU */
  76         case 1:
  77                 printk(KERN_INFO "%s: Using full CPU PVR support\n",
  78                         __func__);
  79                 set_cpuinfo_static(&cpuinfo, cpu);
  80                 set_cpuinfo_pvr_full(&cpuinfo, cpu);
  81                 break;
  82         default:
  83                 printk(KERN_WARNING "%s: Unsupported PVR setting\n", __func__);
  84                 set_cpuinfo_static(&cpuinfo, cpu);
  85         }
  86 }