arch/mips/lantiq/xway/prom-ase.c

   1 /*
   2  *  This program is free software; you can redistribute it and/or modify it
   3  *  under the terms of the GNU General Public License version 2 as published
   4  *  by the Free Software Foundation.
   5  *
   6  *  Copyright (C) 2010 John Crispin <blogic@openwrt.org>
   7  */
   8
   9 #include <linux/export.h>
  10 #include <linux/clk.h>
  11 #include <asm/bootinfo.h>
  12 #include <asm/time.h>
  13
  14 #include <lantiq_soc.h>
  15
  16 #include "../prom.h"
  17
  18 #define SOC_AMAZON_SE   "Amazon_SE"
  19
  20 #define PART_SHIFT      12
  21 #define PART_MASK       0x0FFFFFFF
  22 #define REV_SHIFT       28
  23 #define REV_MASK        0xF0000000
  24
  25 void __init ltq_soc_detect(struct ltq_soc_info *i)
  26 {
  27         i->partnum = (ltq_r32(LTQ_MPS_CHIPID) & PART_MASK) >> PART_SHIFT;
  28         i->rev = (ltq_r32(LTQ_MPS_CHIPID) & REV_MASK) >> REV_SHIFT;
  29         switch (i->partnum) {
  30         case SOC_ID_AMAZON_SE:
  31                 i->name = SOC_AMAZON_SE;
  32                 i->type = SOC_TYPE_AMAZON_SE;
  33                 break;
  34
  35         default:
  36                 unreachable();
  37                 break;
  38         }
  39 }