arch/mips/lantiq/xway/prom.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_DANUBE      "Danube"
  19 #define SOC_TWINPASS    "Twinpass"
  20 #define SOC_AMAZON_SE   "Amazon_SE"
  21 #define SOC_AR9         "AR9"
  22 #define SOC_GR9         "GR9"
  23 #define SOC_VR9         "VR9"
  24
  25 #define COMP_DANUBE     "lantiq,danube"
  26 #define COMP_TWINPASS   "lantiq,twinpass"
  27 #define COMP_AMAZON_SE  "lantiq,ase"
  28 #define COMP_AR9        "lantiq,ar9"
  29 #define COMP_GR9        "lantiq,gr9"
  30 #define COMP_VR9        "lantiq,vr9"
  31
  32 #define PART_SHIFT      12
  33 #define PART_MASK       0x0FFFFFFF
  34 #define REV_SHIFT       28
  35 #define REV_MASK        0xF0000000
  36
  37 void __init ltq_soc_detect(struct ltq_soc_info *i)
  38 {
  39         i->partnum = (ltq_r32(LTQ_MPS_CHIPID) & PART_MASK) >> PART_SHIFT;
  40         i->rev = (ltq_r32(LTQ_MPS_CHIPID) & REV_MASK) >> REV_SHIFT;
  41         sprintf(i->rev_type, "1.%d", i->rev);
  42         switch (i->partnum) {
  43         case SOC_ID_DANUBE1:
  44         case SOC_ID_DANUBE2:
  45                 i->name = SOC_DANUBE;
  46                 i->type = SOC_TYPE_DANUBE;
  47                 i->compatible = COMP_DANUBE;
  48                 break;
  49
  50         case SOC_ID_TWINPASS:
  51                 i->name = SOC_TWINPASS;
  52                 i->type = SOC_TYPE_DANUBE;
  53                 i->compatible = COMP_TWINPASS;
  54                 break;
  55
  56         case SOC_ID_ARX188:
  57         case SOC_ID_ARX168_1:
  58         case SOC_ID_ARX168_2:
  59         case SOC_ID_ARX182:
  60                 i->name = SOC_AR9;
  61                 i->type = SOC_TYPE_AR9;
  62                 i->compatible = COMP_AR9;
  63                 break;
  64
  65         case SOC_ID_GRX188:
  66         case SOC_ID_GRX168:
  67                 i->name = SOC_GR9;
  68                 i->type = SOC_TYPE_AR9;
  69                 i->compatible = COMP_GR9;
  70                 break;
  71
  72         case SOC_ID_AMAZON_SE_1:
  73         case SOC_ID_AMAZON_SE_2:
  74 #ifdef CONFIG_PCI
  75                 panic("ase is only supported for non pci kernels");
  76 #endif
  77                 i->name = SOC_AMAZON_SE;
  78                 i->type = SOC_TYPE_AMAZON_SE;
  79                 i->compatible = COMP_AMAZON_SE;
  80                 break;
  81
  82         case SOC_ID_VRX282:
  83         case SOC_ID_VRX268:
  84         case SOC_ID_VRX288:
  85                 i->name = SOC_VR9;
  86                 i->type = SOC_TYPE_VR9;
  87                 i->compatible = COMP_VR9;
  88                 break;
  89
  90         case SOC_ID_GRX268:
  91         case SOC_ID_GRX288:
  92                 i->name = SOC_GR9;
  93                 i->type = SOC_TYPE_VR9;
  94                 i->compatible = COMP_GR9;
  95                 break;
  96
  97         case SOC_ID_VRX268_2:
  98         case SOC_ID_VRX288_2:
  99                 i->name = SOC_VR9;
 100                 i->type = SOC_TYPE_VR9_2;
 101                 i->compatible = COMP_VR9;
 102                 break;
 103
 104         case SOC_ID_GRX282_2:
 105         case SOC_ID_GRX288_2:
 106                 i->name = SOC_GR9;
 107                 i->type = SOC_TYPE_VR9_2;
 108                 i->compatible = COMP_GR9;
 109                 break;
 110
 111         default:
 112                 unreachable();
 113                 break;
 114         }
 115 }