target/linux/adm5120/files-3.14/arch/mips/adm5120/prom/prom_read.h

   1 /*
   2  *  Generic prom definitions
   3  *
   4  *  Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify it
   7  *  under the terms of the GNU General Public License version 2 as published
   8  *  by the Free Software Foundation.
   9  *
  10  */
  11
  12 #ifndef _ADM5120_PROM_H_
  13 #define _ADM5120_PROM_H_
  14
  15 /*
  16  * Helper routines
  17  */
  18 static inline u16 prom_read_le16(void *buf)
  19 {
  20         u8 *p = buf;
  21
  22         return ((u16)p[0] + ((u16)p[1] << 8));
  23 }
  24
  25 static inline u32 prom_read_le32(void *buf)
  26 {
  27         u8 *p = buf;
  28
  29         return ((u32)p[0] + ((u32)p[1] << 8) + ((u32)p[2] << 16) +
  30                 ((u32)p[3] << 24));
  31 }
  32
  33 static inline u16 prom_read_be16(void *buf)
  34 {
  35         u8 *p = buf;
  36
  37         return (((u16)p[0] << 8) + (u16)p[1]);
  38 }
  39
  40 static inline u32 prom_read_be32(void *buf)
  41 {
  42         u8 *p = buf;
  43
  44         return (((u32)p[0] << 24) + ((u32)p[1] << 16) + ((u32)p[2] << 8) +
  45                 ((u32)p[3]));
  46 }
  47
  48 #endif /* _ADM5120_PROM_H_ */
  49
  50