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Linux/arch/mips/vr41xx/common/init.c

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  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 
 33 static 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 
 39 void __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 
 53 void __init plat_mem_setup(void)
 54 {
 55         iomem_resource_init();
 56 
 57         vr41xx_siu_setup();
 58 }
 59 
 60 void __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 
 75 void __init prom_free_prom_memory(void)
 76 {
 77 }
 78 

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