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_OPENFIRMWARE 10 11/* run an OFW command by calling into the firmware */ 12#define olpc_ofw(name, args, res) \ 13 __olpc_ofw((name), ARRAY_SIZE(args), args, ARRAY_SIZE(res), res) 14 15extern int __olpc_ofw(const char *name, int nr_args, const void **args, int nr_res, 16 void **res); 17 18/* determine whether OFW is available and lives in the proper memory */ 19extern void olpc_ofw_detect(void); 20 21/* install OFW's pde permanently into the kernel's pgtable */ 22extern void setup_olpc_ofw_pgd(void); 23 24#else /* !CONFIG_OLPC_OPENFIRMWARE */ 25 26static inline void olpc_ofw_detect(void) { } 27static inline void setup_olpc_ofw_pgd(void) { } 28 29#endif /* !CONFIG_OLPC_OPENFIRMWARE */ 30 31#endif /* _ASM_X86_OLPC_OFW_H */ 32