LXR linux/arch/mips/vr41xx/common/init.c

   1/*
   2 *  init.c, Common initialization routines for NEC VR4100 series.
   3 *
   4 *  Copyright (C) 2003-2009  Yoichi Yuasa <yuasa@linux-mips.org>
   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 as published by
   8 *  the Free Software Foundation; either version 2 of the License, or
   9 *  (at your option) any later version.
  10 *
  11 *  This program is distributed in the hope that it will be useful,
  12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *  GNU General Public License for more details.
  15 *
  16 *  You should have received a copy of the GNU General Public License
  17 *  along with this program; if not, write to the Free Software
  18 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20#include <linux/init.h>
  21#include <linux/ioport.h>
  22#include <linux/irq.h>
  23#include <linux/string.h>
  24
  25#include <asm/bootinfo.h>
  26#include <asm/time.h>
  27#include <asm/vr41xx/irq.h>
  28#include <asm/vr41xx/vr41xx.h>
  29
  30#define IO_MEM_RESOURCE_START   0UL
  31#define IO_MEM_RESOURCE_END     0x1fffffffUL
  32
  33static void __init iomem_resource_init(void)
  34{
  35        iomem_resource.start = IO_MEM_RESOURCE_START;
  36        iomem_resource.end = IO_MEM_RESOURCE_END;
  37}
  38
  39void __init plat_time_init(void)
  40{
  41        unsigned long tclock;
  42
  43        vr41xx_calculate_clock_frequency();
  44
  45        tclock = vr41xx_get_tclock_frequency();
  46        if (current_cpu_data.processor_id == PRID_VR4131_REV2_0 ||
  47            current_cpu_data.processor_id == PRID_VR4131_REV2_1)
  48                mips_hpt_frequency = tclock / 2;
  49        else
  50                mips_hpt_frequency = tclock / 4;
  51}
  52
  53void __init plat_mem_setup(void)
  54{
  55        iomem_resource_init();
  56
  57        vr41xx_siu_setup();
  58}
  59
  60void __init prom_init(void)
  61{
  62        int argc, i;
  63        char **argv;
  64
  65        argc = fw_arg0;
  66        argv = (char **)fw_arg1;
  67
  68        for (i = 1; i < argc; i++) {
  69                strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE);
  70                if (i < (argc - 1))
  71                        strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
  72        }
  73}
  74
  75void __init prom_free_prom_memory(void)
  76{
  77}
  78