arch/sandbox/cpu/state.c

   1 /*
   2  * Copyright (c) 2011-2012 The Chromium OS Authors.
   3  * See file CREDITS for list of people who contributed to this
   4  * project.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of
   9  * the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  19  * MA 02111-1307 USA
  20  */
  21
  22 #include <common.h>
  23 #include <asm/state.h>
  24
  25 /* Main state record for the sandbox */
  26 static struct sandbox_state main_state;
  27 static struct sandbox_state *state;     /* Pointer to current state record */
  28
  29 void state_record_exit(enum exit_type_id exit_type)
  30 {
  31         state->exit_type = exit_type;
  32 }
  33
  34 struct sandbox_state *state_get_current(void)
  35 {
  36         assert(state);
  37         return state;
  38 }
  39
  40 int state_init(void)
  41 {
  42         state = &main_state;
  43
  44         /*
  45          * Example of how to use GPIOs:
  46          *
  47          * sandbox_gpio_set_direction(170, 0);
  48          * sandbox_gpio_set_value(170, 0);
  49          */
  50         return 0;
  51 }