arch/mips/mach-ath79/cpu.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2015-2016 Wills Wang <wills.wang@live.com>
   4  */
   5
   6 #include <common.h>
   7 #include <init.h>
   8 #include <asm/io.h>
   9 #include <asm/addrspace.h>
  10 #include <asm/types.h>
  11 #include <mach/ath79.h>
  12 #include <mach/ar71xx_regs.h>
  13
  14 struct ath79_soc_desc {
  15         const enum ath79_soc_type soc;
  16         const char *chip;
  17         const int major;
  18         const int minor;
  19 };
  20
  21 static const struct ath79_soc_desc desc[] = {
  22         {ATH79_SOC_AR7130,      "7130",
  23          REV_ID_MAJOR_AR71XX,   AR71XX_REV_ID_MINOR_AR7130},
  24         {ATH79_SOC_AR7141,      "7141",
  25          REV_ID_MAJOR_AR71XX,   AR71XX_REV_ID_MINOR_AR7141},
  26         {ATH79_SOC_AR7161,      "7161",
  27          REV_ID_MAJOR_AR71XX,   AR71XX_REV_ID_MINOR_AR7161},
  28         {ATH79_SOC_AR7240,      "7240", REV_ID_MAJOR_AR7240,    0},
  29         {ATH79_SOC_AR7241,      "7241", REV_ID_MAJOR_AR7241,    0},
  30         {ATH79_SOC_AR7242,      "7242", REV_ID_MAJOR_AR7242,    0},
  31         {ATH79_SOC_AR9130,      "9130",
  32          REV_ID_MAJOR_AR913X,   AR913X_REV_ID_MINOR_AR9130},
  33         {ATH79_SOC_AR9132,      "9132",
  34          REV_ID_MAJOR_AR913X,   AR913X_REV_ID_MINOR_AR9132},
  35         {ATH79_SOC_AR9330,      "9330", REV_ID_MAJOR_AR9330,    0},
  36         {ATH79_SOC_AR9331,      "9331", REV_ID_MAJOR_AR9331,    0},
  37         {ATH79_SOC_AR9341,      "9341", REV_ID_MAJOR_AR9341,    0},
  38         {ATH79_SOC_AR9342,      "9342", REV_ID_MAJOR_AR9342,    0},
  39         {ATH79_SOC_AR9344,      "9344", REV_ID_MAJOR_AR9344,    0},
  40         {ATH79_SOC_QCA9533,     "9533", REV_ID_MAJOR_QCA9533,   0},
  41         {ATH79_SOC_QCA9533,     "9533",
  42          REV_ID_MAJOR_QCA9533_V2,       0},
  43         {ATH79_SOC_QCA9556,     "9556", REV_ID_MAJOR_QCA9556,   0},
  44         {ATH79_SOC_QCA9558,     "9558", REV_ID_MAJOR_QCA9558,   0},
  45         {ATH79_SOC_TP9343,      "9343", REV_ID_MAJOR_TP9343,    0},
  46         {ATH79_SOC_QCA9561,     "9561", REV_ID_MAJOR_QCA9561,   0},
  47 };
  48
  49 int mach_cpu_init(void)
  50 {
  51         void __iomem *base;
  52         enum ath79_soc_type soc = ATH79_SOC_UNKNOWN;
  53         u32 id, major, minor = 0;
  54         u32 rev = 0, ver = 1;
  55         int i;
  56
  57         base = map_physmem(AR71XX_RESET_BASE, AR71XX_RESET_SIZE,
  58                            MAP_NOCACHE);
  59
  60         id = readl(base + AR71XX_RESET_REG_REV_ID);
  61         major = id & REV_ID_MAJOR_MASK;
  62         switch (major) {
  63         case REV_ID_MAJOR_AR71XX:
  64         case REV_ID_MAJOR_AR913X:
  65                 minor = id & AR71XX_REV_ID_MINOR_MASK;
  66                 rev = id >> AR71XX_REV_ID_REVISION_SHIFT;
  67                 rev &= AR71XX_REV_ID_REVISION_MASK;
  68                 break;
  69
  70         case REV_ID_MAJOR_QCA9533_V2:
  71                 ver = 2;
  72                 /* drop through */
  73
  74         case REV_ID_MAJOR_AR9341:
  75         case REV_ID_MAJOR_AR9342:
  76         case REV_ID_MAJOR_AR9344:
  77         case REV_ID_MAJOR_QCA9533:
  78         case REV_ID_MAJOR_QCA9556:
  79         case REV_ID_MAJOR_QCA9558:
  80         case REV_ID_MAJOR_TP9343:
  81         case REV_ID_MAJOR_QCA9561:
  82                 rev = id & AR71XX_REV_ID_REVISION2_MASK;
  83                 break;
  84         default:
  85                 rev = id & AR71XX_REV_ID_REVISION_MASK;
  86                 break;
  87         }
  88
  89         for (i = 0; i < ARRAY_SIZE(desc); i++) {
  90                 if ((desc[i].major == major) &&
  91                     (desc[i].minor == minor)) {
  92                         soc = desc[i].soc;
  93                         break;
  94                 }
  95         }
  96
  97         gd->arch.id = id;
  98         gd->arch.soc = soc;
  99         gd->arch.rev = rev;
 100         gd->arch.ver = ver;
 101         return 0;
 102 }
 103
 104 int print_cpuinfo(void)
 105 {
 106         enum ath79_soc_type soc = ATH79_SOC_UNKNOWN;
 107         const char *chip = "????";
 108         u32 id, rev, ver;
 109         int i;
 110
 111         for (i = 0; i < ARRAY_SIZE(desc); i++) {
 112                 if (desc[i].soc == gd->arch.soc) {
 113                         chip = desc[i].chip;
 114                         soc = desc[i].soc;
 115                         break;
 116                 }
 117         }
 118
 119         id = gd->arch.id;
 120         rev = gd->arch.rev;
 121         ver = gd->arch.ver;
 122
 123         switch (soc) {
 124         case ATH79_SOC_QCA9533:
 125         case ATH79_SOC_QCA9556:
 126         case ATH79_SOC_QCA9558:
 127         case ATH79_SOC_QCA9561:
 128                 printf("Qualcomm Atheros QCA%s ver %u rev %u\n", chip,
 129                        ver, rev);
 130                 break;
 131         case ATH79_SOC_TP9343:
 132                 printf("Qualcomm Atheros TP%s rev %u\n", chip, rev);
 133                 break;
 134         case ATH79_SOC_UNKNOWN:
 135                 printf("ATH79: unknown SoC, id:0x%08x", id);
 136                 break;
 137         default:
 138                 printf("Atheros AR%s rev %u\n", chip, rev);
 139         }
 140
 141         return 0;
 142 }