arch/mips/alchemy/devboards/db1xxx.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Alchemy DB/PB1xxx board support.
   4  */
   5
   6 #include <asm/prom.h>
   7 #include <asm/mach-au1x00/au1000.h>
   8 #include <asm/mach-db1x00/bcsr.h>
   9
  10 int __init db1000_board_setup(void);
  11 int __init db1000_dev_setup(void);
  12 int __init db1500_pci_setup(void);
  13 int __init db1200_board_setup(void);
  14 int __init db1200_dev_setup(void);
  15 int __init db1300_board_setup(void);
  16 int __init db1300_dev_setup(void);
  17 int __init db1550_board_setup(void);
  18 int __init db1550_dev_setup(void);
  19 int __init db1550_pci_setup(int);
  20
  21 static const char *board_type_str(void)
  22 {
  23         switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
  24         case BCSR_WHOAMI_DB1000:
  25                 return "DB1000";
  26         case BCSR_WHOAMI_DB1500:
  27                 return "DB1500";
  28         case BCSR_WHOAMI_DB1100:
  29                 return "DB1100";
  30         case BCSR_WHOAMI_PB1500:
  31         case BCSR_WHOAMI_PB1500R2:
  32                 return "PB1500";
  33         case BCSR_WHOAMI_PB1100:
  34                 return "PB1100";
  35         case BCSR_WHOAMI_PB1200_DDR1:
  36         case BCSR_WHOAMI_PB1200_DDR2:
  37                 return "PB1200";
  38         case BCSR_WHOAMI_DB1200:
  39                 return "DB1200";
  40         case BCSR_WHOAMI_DB1300:
  41                 return "DB1300";
  42         case BCSR_WHOAMI_DB1550:
  43                 return "DB1550";
  44         case BCSR_WHOAMI_PB1550_SDR:
  45         case BCSR_WHOAMI_PB1550_DDR:
  46                 return "PB1550";
  47         default:
  48                 return "(unknown)";
  49         }
  50 }
  51
  52 const char *get_system_type(void)
  53 {
  54         return board_type_str();
  55 }
  56
  57 void __init board_setup(void)
  58 {
  59         int ret;
  60
  61         switch (alchemy_get_cputype()) {
  62         case ALCHEMY_CPU_AU1000:
  63         case ALCHEMY_CPU_AU1500:
  64         case ALCHEMY_CPU_AU1100:
  65                 ret = db1000_board_setup();
  66                 break;
  67         case ALCHEMY_CPU_AU1550:
  68                 ret = db1550_board_setup();
  69                 break;
  70         case ALCHEMY_CPU_AU1200:
  71                 ret = db1200_board_setup();
  72                 break;
  73         case ALCHEMY_CPU_AU1300:
  74                 ret = db1300_board_setup();
  75                 break;
  76         default:
  77                 pr_err("unsupported CPU on board\n");
  78                 ret = -ENODEV;
  79         }
  80         if (ret)
  81                 panic("cannot initialize board support");
  82 }
  83
  84 static int __init db1xxx_arch_init(void)
  85 {
  86         int id = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
  87         if (id == BCSR_WHOAMI_DB1550)
  88                 return db1550_pci_setup(0);
  89         else if ((id == BCSR_WHOAMI_PB1550_SDR) ||
  90                  (id == BCSR_WHOAMI_PB1550_DDR))
  91                 return db1550_pci_setup(1);
  92         else if ((id == BCSR_WHOAMI_DB1500) || (id == BCSR_WHOAMI_PB1500) ||
  93                  (id == BCSR_WHOAMI_PB1500R2))
  94                 return db1500_pci_setup();
  95
  96         return 0;
  97 }
  98 arch_initcall(db1xxx_arch_init);
  99
 100 static int __init db1xxx_dev_init(void)
 101 {
 102         mips_set_machine_name(board_type_str());
 103         switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
 104         case BCSR_WHOAMI_DB1000:
 105         case BCSR_WHOAMI_DB1500:
 106         case BCSR_WHOAMI_DB1100:
 107         case BCSR_WHOAMI_PB1500:
 108         case BCSR_WHOAMI_PB1500R2:
 109         case BCSR_WHOAMI_PB1100:
 110                 return db1000_dev_setup();
 111         case BCSR_WHOAMI_PB1200_DDR1:
 112         case BCSR_WHOAMI_PB1200_DDR2:
 113         case BCSR_WHOAMI_DB1200:
 114                 return db1200_dev_setup();
 115         case BCSR_WHOAMI_DB1300:
 116                 return db1300_dev_setup();
 117         case BCSR_WHOAMI_DB1550:
 118         case BCSR_WHOAMI_PB1550_SDR:
 119         case BCSR_WHOAMI_PB1550_DDR:
 120                 return db1550_dev_setup();
 121         }
 122         return 0;
 123 }
 124 device_initcall(db1xxx_dev_init);