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
11extern 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
17extern 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 */
21extern void olpc_ofw_detect(void);
22
23/* install OFW's pde permanently into the kernel's pgtable */
24extern void setup_olpc_ofw_pgd(void);
25
26/* check if OFW was detected during boot */
27extern bool olpc_ofw_present(void);
28
29extern void olpc_dt_build_devicetree(void);
30
31#else /* !CONFIG_OLPC */
32static inline void olpc_ofw_detect(void) { }
33static inline void setup_olpc_ofw_pgd(void) { }
34static inline void olpc_dt_build_devicetree(void) { }
35#endif /* !CONFIG_OLPC */
36
37#endif /* _ASM_X86_OLPC_OFW_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_X86_OLPC_OFW_H
 3#define _ASM_X86_OLPC_OFW_H
 4
 5/* index into the page table containing the entry OFW occupies */
 6#define OLPC_OFW_PDE_NR 1022
 7
 8#define OLPC_OFW_SIG 0x2057464F	/* aka "OFW " */
 9
10#ifdef CONFIG_OLPC
11
12extern bool olpc_ofw_is_installed(void);
13
14/* run an OFW command by calling into the firmware */
15#define olpc_ofw(name, args, res) \
16	__olpc_ofw((name), ARRAY_SIZE(args), args, ARRAY_SIZE(res), res)
17
18extern int __olpc_ofw(const char *name, int nr_args, const void **args, int nr_res,
19		void **res);
20
21/* determine whether OFW is available and lives in the proper memory */
22extern void olpc_ofw_detect(void);
23
24/* install OFW's pde permanently into the kernel's pgtable */
25extern void setup_olpc_ofw_pgd(void);
26
27/* check if OFW was detected during boot */
28extern bool olpc_ofw_present(void);
29
30extern void olpc_dt_build_devicetree(void);
31
32#else /* !CONFIG_OLPC */
33static inline void olpc_ofw_detect(void) { }
34static inline void setup_olpc_ofw_pgd(void) { }
35static inline void olpc_dt_build_devicetree(void) { }
36#endif /* !CONFIG_OLPC */
37
38#endif /* _ASM_X86_OLPC_OFW_H */