target/linux/ifxmips/files/arch/mips/ifxmips/danube/setup.c

   1 #include <linux/cpu.h>
   2 #include <linux/init.h>
   3 #include <linux/kernel.h>
   4 #include <linux/pm.h>
   5 #include <linux/io.h>
   6 #include <linux/ioport.h>
   7 #include <asm/reboot.h>
   8 #include <asm/system.h>
   9 #include <ifxmips.h>
  10 #include <ifxmips_cgu.h>
  11
  12 #define SYSTEM_DANUBE                   "Danube"
  13 #define SYSTEM_DANUBE_CHIPID1   0x00129083
  14 #define SYSTEM_DANUBE_CHIPID2   0x0012B083
  15
  16 #define SYSTEM_TWINPASS                 "Twinpass"
  17 #define SYSTEM_TWINPASS_CHIPID  0x0012D083
  18
  19 static unsigned int chiprev = 0;
  20 unsigned char ifxmips_sys_type[IFXMIPS_SYS_TYPE_LEN];
  21
  22 unsigned int
  23 ifxmips_get_cpu_ver(void)
  24 {
  25         return (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0xF0000000) >> 28;
  26 }
  27 EXPORT_SYMBOL(ifxmips_get_cpu_ver);
  28
  29 const char*
  30 get_system_type(void)
  31 {
  32         return ifxmips_sys_type;
  33 }
  34
  35 static void
  36 ifxmips_machine_restart(char *command)
  37 {
  38         printk(KERN_NOTICE "System restart\n");
  39         local_irq_disable();
  40         ifxmips_w32(ifxmips_r32(IFXMIPS_RCU_RST) | IFXMIPS_RCU_RST_ALL,
  41                 IFXMIPS_RCU_RST);
  42         for(;;);
  43 }
  44
  45 static void
  46 ifxmips_machine_halt(void)
  47 {
  48         printk(KERN_NOTICE "System halted.\n");
  49         local_irq_disable();
  50         for(;;);
  51 }
  52
  53 static void
  54 ifxmips_machine_power_off(void)
  55 {
  56         printk(KERN_NOTICE "Please turn off the power now.\n");
  57         local_irq_disable();
  58         for(;;);
  59 }
  60
  61 void __init
  62 ifxmips_soc_setup(void)
  63 {
  64         char *name = SYSTEM_DANUBE;
  65         ioport_resource.start = IOPORT_RESOURCE_START;
  66         ioport_resource.end = IOPORT_RESOURCE_END;
  67         iomem_resource.start = IOMEM_RESOURCE_START;
  68         iomem_resource.end = IOMEM_RESOURCE_END;
  69
  70         _machine_restart = ifxmips_machine_restart;
  71         _machine_halt = ifxmips_machine_halt;
  72         pm_power_off = ifxmips_machine_power_off;
  73
  74         chiprev = (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0x0FFFFFFF);
  75
  76         switch (chiprev)
  77         {
  78         case SYSTEM_DANUBE_CHIPID1:
  79         case SYSTEM_DANUBE_CHIPID2:
  80                 name = SYSTEM_DANUBE;
  81                 break;
  82
  83         case SYSTEM_TWINPASS_CHIPID:
  84                 name = SYSTEM_TWINPASS;
  85                 break;
  86
  87         default:
  88                 printk(KERN_ERR "This is not a danube chiprev : 0x%08X\n", chiprev);
  89                 BUG();
  90                 break;
  91         }
  92         snprintf(ifxmips_sys_type, IFXMIPS_SYS_TYPE_LEN - 1, "%s rev1.%d %dMhz",
  93                 name, ifxmips_get_cpu_ver(),
  94                 ifxmips_get_cpu_hz() / 1000000);
  95         ifxmips_sys_type[IFXMIPS_SYS_TYPE_LEN - 1] = '\0';
  96 }