Pileus Git - ~andy/linux/blob - arch/mips/alchemy/devboards/db1235.c

   1 /*
   2  * DB1200/PB1200 / DB1550 / DB1300 board support.
   3  *
   4  * These 4 boards can reliably be supported in a single kernel image.
   5  */
   6
   7 #include <asm/mach-au1x00/au1000.h>
   8 #include <asm/mach-db1x00/bcsr.h>
   9
  10 int __init db1200_board_setup(void);
  11 int __init db1200_dev_setup(void);
  12 int __init db1300_board_setup(void);
  13 int __init db1300_dev_setup(void);
  14 int __init db1550_board_setup(void);
  15 int __init db1550_dev_setup(void);
  16 int __init db1550_pci_setup(void);
  17
  18 static const char *board_type_str(void)
  19 {
  20         switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
  21         case BCSR_WHOAMI_PB1200_DDR1:
  22         case BCSR_WHOAMI_PB1200_DDR2:
  23                 return "PB1200";
  24         case BCSR_WHOAMI_DB1200:
  25                 return "DB1200";
  26         case BCSR_WHOAMI_DB1300:
  27                 return "DB1300";
  28         case BCSR_WHOAMI_DB1550:
  29                 return "DB1550";
  30         default:
  31                 return "(unknown)";
  32         }
  33 }
  34
  35 const char *get_system_type(void)
  36 {
  37         return board_type_str();
  38 }
  39
  40 void __init board_setup(void)
  41 {
  42         int ret;
  43
  44         switch (alchemy_get_cputype()) {
  45         case ALCHEMY_CPU_AU1550:
  46                 ret = db1550_board_setup();
  47                 break;
  48         case ALCHEMY_CPU_AU1200:
  49                 ret = db1200_board_setup();
  50                 break;
  51         case ALCHEMY_CPU_AU1300:
  52                 ret = db1300_board_setup();
  53                 break;
  54         default:
  55                 pr_err("unsupported CPU on board\n");
  56                 ret = -ENODEV;
  57         }
  58         if (ret)
  59                 panic("cannot initialize board support\n");
  60 }
  61
  62 int __init db1235_arch_init(void)
  63 {
  64         if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1550)
  65                 return db1550_pci_setup();
  66         return 0;
  67 }
  68 arch_initcall(db1235_arch_init);
  69
  70 int __init db1235_dev_init(void)
  71 {
  72         switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
  73         case BCSR_WHOAMI_PB1200_DDR1:
  74         case BCSR_WHOAMI_PB1200_DDR2:
  75         case BCSR_WHOAMI_DB1200:
  76                 return db1200_dev_setup();
  77         case BCSR_WHOAMI_DB1300:
  78                 return db1300_dev_setup();
  79         case BCSR_WHOAMI_DB1550:
  80                 return db1550_dev_setup();
  81         }
  82         return 0;
  83 }
  84 device_initcall(db1235_dev_init);