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cpuinfo.c

/*
 * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
 * Copyright (C) 2007-2009 PetaLogix
 * Copyright (C) 2007 John Williams <john.williams@petalogix.com>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License. See the file "COPYING" in the main directory of this archive
 * for more details.
 */

#include <linux/init.h>
#include <linux/slab.h>
#include <asm/cpuinfo.h>
#include <asm/pvr.h>

const struct cpu_ver_key cpu_ver_lookup[] = {
      /* These key value are as per MBV field in PVR0 */
      {"5.00.a", 0x01},
      {"5.00.b", 0x02},
      {"5.00.c", 0x03},
      {"6.00.a", 0x04},
      {"6.00.b", 0x06},
      {"7.00.a", 0x05},
      {"7.00.b", 0x07},
      {"7.10.a", 0x08},
      {"7.10.b", 0x09},
      {"7.10.c", 0x0a},
      {"7.10.d", 0x0b},
      {"7.20.a", 0x0c},
      {"7.20.b", 0x0d},
      {"7.20.c", 0x0e},
      /* FIXME There is no keycode defined in MBV for these versions */
      {"2.10.a", 0x10},
      {"3.00.a", 0x20},
      {"4.00.a", 0x30},
      {"4.00.b", 0x40},
      {NULL, 0},
};

/*
 * FIXME Not sure if the actual key is defined by Xilinx in the PVR
 */
const struct family_string_key family_string_lookup[] = {
      {"virtex2", 0x4},
      {"virtex2pro", 0x5},
      {"spartan3", 0x6},
      {"virtex4", 0x7},
      {"virtex5", 0x8},
      {"spartan3e", 0x9},
      {"spartan3a", 0xa},
      {"spartan3an", 0xb},
      {"spartan3adsp", 0xc},
      {"spartan6", 0xd},
      {"virtex6", 0xe},
      /* FIXME There is no key code defined for spartan2 */
      {"spartan2", 0xf0},
      {NULL, 0},
};

struct cpuinfo cpuinfo;

void __init setup_cpuinfo(void)
{
      struct device_node *cpu = NULL;

      cpu = (struct device_node *) of_find_node_by_type(NULL, "cpu");
      if (!cpu)
            printk(KERN_ERR "You don't have cpu!!!\n");

      printk(KERN_INFO "%s: initialising\n", __func__);

      switch (cpu_has_pvr()) {
      case 0:
            printk(KERN_WARNING
                  "%s: No PVR support. Using static CPU info from FDT\n",
                  __func__);
            set_cpuinfo_static(&cpuinfo, cpu);
            break;
/* FIXME I found weird behavior with MB 7.00.a/b 7.10.a
 * please do not use FULL PVR with MMU */
      case 1:
            printk(KERN_INFO "%s: Using full CPU PVR support\n",
                  __func__);
            set_cpuinfo_static(&cpuinfo, cpu);
            set_cpuinfo_pvr_full(&cpuinfo, cpu);
            break;
      default:
            printk(KERN_WARNING "%s: Unsupported PVR setting\n", __func__);
            set_cpuinfo_static(&cpuinfo, cpu);
      }
}

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