arch/powerpc/boot/of.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _PPC_BOOT_OF_H_
   3 #define _PPC_BOOT_OF_H_
   4
   5 #include "swab.h"
   6
   7 typedef void *phandle;
   8 typedef u32 ihandle;
   9
  10 void of_init(void *promptr);
  11 int of_call_prom(const char *service, int nargs, int nret, ...);
  12 unsigned int of_claim(unsigned long virt, unsigned long size,
  13         unsigned long align);
  14 void *of_vmlinux_alloc(unsigned long size);
  15 void of_exit(void);
  16 void *of_finddevice(const char *name);
  17 int of_getprop(const void *phandle, const char *name, void *buf,
  18                const int buflen);
  19 int of_setprop(const void *phandle, const char *name, const void *buf,
  20                const int buflen);
  21
  22 /* Console functions */
  23 void of_console_init(void);
  24
  25 typedef u16                     __be16;
  26 typedef u32                     __be32;
  27 typedef u64                     __be64;
  28
  29 #ifdef __LITTLE_ENDIAN__
  30 #define cpu_to_be16(x) swab16(x)
  31 #define be16_to_cpu(x) swab16(x)
  32 #define cpu_to_be32(x) swab32(x)
  33 #define be32_to_cpu(x) swab32(x)
  34 #define cpu_to_be64(x) swab64(x)
  35 #define be64_to_cpu(x) swab64(x)
  36 #else
  37 #define cpu_to_be16(x) (x)
  38 #define be16_to_cpu(x) (x)
  39 #define cpu_to_be32(x) (x)
  40 #define be32_to_cpu(x) (x)
  41 #define cpu_to_be64(x) (x)
  42 #define be64_to_cpu(x) (x)
  43 #endif
  44
  45 #define PROM_ERROR (-1u)
  46
  47 #endif /* _PPC_BOOT_OF_H_ */