arch/x86/include/asm/olpc_ofw.h

   1 #ifndef _ASM_X86_OLPC_OFW_H
   2 #define _ASM_X86_OLPC_OFW_H
   3
   4 /* index into the page table containing the entry OFW occupies */
   5 #define OLPC_OFW_PDE_NR 1022
   6
   7 #define OLPC_OFW_SIG 0x2057464F /* aka "OFW " */
   8
   9 #ifdef CONFIG_OLPC
  10
  11 extern bool olpc_ofw_is_installed(void);
  12
  13 /* run an OFW command by calling into the firmware */
  14 #define olpc_ofw(name, args, res) \
  15         __olpc_ofw((name), ARRAY_SIZE(args), args, ARRAY_SIZE(res), res)
  16
  17 extern int __olpc_ofw(const char *name, int nr_args, const void **args, int nr_res,
  18                 void **res);
  19
  20 /* determine whether OFW is available and lives in the proper memory */
  21 extern void olpc_ofw_detect(void);
  22
  23 /* install OFW's pde permanently into the kernel's pgtable */
  24 extern void setup_olpc_ofw_pgd(void);
  25
  26 /* check if OFW was detected during boot */
  27 extern bool olpc_ofw_present(void);
  28
  29 extern void olpc_dt_build_devicetree(void);
  30
  31 #else /* !CONFIG_OLPC */
  32 static inline void olpc_ofw_detect(void) { }
  33 static inline void setup_olpc_ofw_pgd(void) { }
  34 static inline void olpc_dt_build_devicetree(void) { }
  35 #endif /* !CONFIG_OLPC */
  36
  37 #endif /* _ASM_X86_OLPC_OFW_H */