include/bootcount.h

   1 /*
   2  * (C) Copyright 2012
   3  * Stefan Roese, DENX Software Engineering, sr@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #include <common.h>
  20 #include <asm/io.h>
  21 #include <asm/byteorder.h>
  22
  23 #if !defined(CONFIG_SYS_BOOTCOUNT_LE) && !defined(CONFIG_SYS_BOOTCOUNT_BE)
  24 # if __BYTE_ORDER == __LITTLE_ENDIAN
  25 #  define CONFIG_SYS_BOOTCOUNT_LE
  26 # else
  27 #  define CONFIG_SYS_BOOTCOUNT_BE
  28 # endif
  29 #endif
  30
  31 #ifdef CONFIG_SYS_BOOTCOUNT_LE
  32 static inline void raw_bootcount_store(volatile u32 *addr, u32 data)
  33 {
  34         out_le32(addr, data);
  35 }
  36
  37 static inline u32 raw_bootcount_load(volatile u32 *addr)
  38 {
  39         return in_le32(addr);
  40 }
  41 #else
  42 static inline void raw_bootcount_store(volatile u32 *addr, u32 data)
  43 {
  44         out_be32(addr, data);
  45 }
  46
  47 static inline u32 raw_bootcount_load(volatile u32 *addr)
  48 {
  49         return in_be32(addr);
  50 }
  51 #endif