LXR linux/arch/powerpc/kernel/cpu_setup

   1/*
   2 * Copyright (C) 2006-2007 PA Semi, Inc
   3 *
   4 * Maintained by: Olof Johansson <olof@lixom.net>
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 as
   8 * published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  18 *
  19 */
  20
  21#include <asm/processor.h>
  22#include <asm/page.h>
  23#include <asm/cputable.h>
  24#include <asm/ppc_asm.h>
  25#include <asm/asm-offsets.h>
  26#include <asm/cache.h>
  27
  28/* Right now, restore and setup are the same thing */
  29_GLOBAL(__restore_cpu_pa6t)
  30_GLOBAL(__setup_cpu_pa6t)
  31        /* Do nothing if not running in HV mode */
  32        mfmsr   r0
  33        rldicl. r0,r0,4,63
  34        beqlr
  35
  36        mfspr   r0,SPRN_HID5
  37        ori     r0,r0,0x38
  38        mtspr   SPRN_HID5,r0
  39
  40        mfspr   r0,SPRN_LPCR
  41        ori     r0,r0,0x7000
  42        mtspr   SPRN_LPCR,r0
  43
  44        blr
  45