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 #define cpu_to_be32(x) swab32(x) 24 static inline u32 be32_to_cpup(const u32 *p) 25 { 26 return swab32p((u32 *)p); 27 } 28 #else 29 #define get_le32(p) swab32p(p) 30 #define cpu_to_be32(x) (x) 31 static inline u32 be32_to_cpup(const u32 *p) 32 { 33 return *p; 34 } 35 #endif 36 37 static inline uint32_t get_unaligned_be32(const void *p) 38 { 39 return be32_to_cpup(p); 40 } 41 42 static inline void put_unaligned_be32(u32 val, void *p) 43 { 44 *((u32 *)p) = cpu_to_be32(val); 45 } 46 47 #define memeq(a, b, size) (memcmp(a, b, size) == 0) 48 #define memzero(buf, size) memset(buf, 0, size) 49 50 /* prevent the inclusion of the xz-preboot MM headers */ 51 #define DECOMPR_MM_H 52 #define memmove memmove 53 #define XZ_EXTERN static 54 55 /* xz.h needs to be included directly since we need enum xz_mode */ 56 #include "../../../include/linux/xz.h" 57 58 #undef XZ_EXTERN 59 60 #endif 61