kernel/fiasco/src/kern/arm/bsp/realview/reset-arm-realview.cpp

   1 IMPLEMENTATION [arm && realview]:
   2
   3 #include "io.h"
   4 #include "kmem.h"
   5
   6 class Realview_reset
   7 {
   8 public:
   9   enum
  10   {
  11     LOCK  = Kmem::System_regs_map_base + 0x20,
  12     RESET = Kmem::System_regs_map_base + 0x40,
  13   };
  14 };
  15
  16 // ------------------------------------------------------------------------
  17 IMPLEMENTATION [arm && realview && realview_eb]:
  18
  19 static inline void do_reset()
  20 {
  21   Io::write(0x108, Realview_reset::RESET); // the 0x100 is for Qemu
  22 }
  23
  24 // ------------------------------------------------------------------------
  25 IMPLEMENTATION [arm && realview && realview_pb11mp]:
  26
  27 static inline void do_reset()
  28 {
  29   Io::write(0x4, Realview_reset::RESET); // PORESET (0x8 would also be ok)
  30 }
  31
  32 // ------------------------------------------------------------------------
  33 IMPLEMENTATION [arm && realview && (realview_pbx || realview_vexpress)]:
  34
  35 static inline void do_reset()
  36 {
  37   Io::write(0x104, Realview_reset::RESET); // POWER reset, 0x100 for Qemu
  38 }
  39
  40 // ------------------------------------------------------------------------
  41 IMPLEMENTATION [arm && realview]:
  42
  43 void __attribute__ ((noreturn))
  44 pc_reset(void)
  45 {
  46   Io::write(0xa05f, Realview_reset::LOCK);  // unlock for reset
  47   do_reset();
  48
  49   for (;;)
  50     ;
  51 }