arch/powerpc/boot/xz_config.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __XZ_CONFIG_H__
   3 #define __XZ_CONFIG_H__
   4
   5 /*
   6  * most of this is copied from lib/xz/xz_private.h, we can't use their defines
   7  * since the boot wrapper is not built in the same environment as the rest of
   8  * the kernel.
   9  */
  10
  11 #include "types.h"
  12 #include "swab.h"
  13
  14 static inline uint32_t swab32p(void *p)
  15 {
  16         uint32_t *q = p;
  17
  18         return swab32(*q);
  19 }
  20
  21 #ifdef __LITTLE_ENDIAN__
  22 #define get_le32(p) (*((uint32_t *) (p)))
  23 #else
  24 #define get_le32(p) swab32p(p)
  25 #endif
  26
  27 #define memeq(a, b, size) (memcmp(a, b, size) == 0)
  28 #define memzero(buf, size) memset(buf, 0, size)
  29
  30 /* prevent the inclusion of the xz-preboot MM headers */
  31 #define DECOMPR_MM_H
  32 #define memmove memmove
  33 #define XZ_EXTERN static
  34
  35 /* xz.h needs to be included directly since we need enum xz_mode */
  36 #include "../../../include/linux/xz.h"
  37
  38 #undef XZ_EXTERN
  39
  40 #endif