l4/pkg/bootstrap_custom/server/src/platform/omap.cc

   1 /*!
   2  * \file   support_beagleboard.cc
   3  * \brief  Support for the Beagleboard
   4  *
   5  * \date   2009-08
   6  * \author Adam Lackorzynski <adam@os.inf.tu-dresden.de>
   7  *
   8  */
   9 /*
  10  * (c) 2009 Author(s)
  11  *     economic rights: Technische Universität Dresden (Germany)
  12  *
  13  * This file is part of TUD:OS and distributed under the terms of the
  14  * GNU General Public License 2.
  15  * Please see the COPYING-GPL-2 file for details.
  16  */
  17
  18 #include "support.h"
  19 #include <l4/drivers/uart_omap35x.h>
  20
  21 namespace {
  22 class Platform_arm_omap : public Platform_single_region_ram
  23 {
  24   bool probe() { return true; }
  25
  26   void init()
  27   {
  28     static L4::Uart_omap35x _uart;
  29 #ifdef PLATFORM_TYPE_beagleboard
  30     static L4::Io_register_block_mmio r(0x49020000);
  31 #elif defined(PLATFORM_TYPE_omap3evm)
  32     static L4::Io_register_block_mmio r(0x4806a000);
  33 #elif defined(PLATFORM_TYPE_omap3_am33xx)
  34     static L4::Io_register_block_mmio r(0x44e09000);
  35 #elif defined(PLATFORM_TYPE_pandaboard) || defined(PLATFORM_TYPE_omap5)
  36     static L4::Io_register_block_mmio r(0x48020000);
  37 #else
  38 #error Unknown platform
  39 #endif
  40     _uart.startup(&r);
  41     set_stdio_uart(&_uart);
  42   }
  43
  44   void arm_switch_to_hyp()
  45   {
  46     register l4_umword_t f asm("r12") = 0x102;
  47     asm volatile("push {fp}                 \n"
  48                  "mcr p15, 0, sp, c13, c0, 2\n"
  49                  "mov r0, pc                \n"
  50                  ".inst 0xe1600071          \n"
  51                  "mrc p15, 0, sp, c13, c0, 2\n"
  52                  "pop {fp}                  \n"
  53                  :
  54                  : "r" (f)
  55                  : "r0", "r1", "r2", "r3", "r4",
  56                    "r5", "r6", "r7", "r8", "r9",
  57                    "r10", "memory");
  58   }
  59 };
  60 }
  61
  62 REGISTER_PLATFORM(Platform_arm_omap);