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38 lines
1.1 KiB
38 lines
1.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _ASM_X86_OLPC_OFW_H |
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#define _ASM_X86_OLPC_OFW_H |
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/* index into the page table containing the entry OFW occupies */ |
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#define OLPC_OFW_PDE_NR 1022 |
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#define OLPC_OFW_SIG 0x2057464F /* aka "OFW " */ |
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#ifdef CONFIG_OLPC |
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extern bool olpc_ofw_is_installed(void); |
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/* run an OFW command by calling into the firmware */ |
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#define olpc_ofw(name, args, res) \ |
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__olpc_ofw((name), ARRAY_SIZE(args), args, ARRAY_SIZE(res), res) |
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extern int __olpc_ofw(const char *name, int nr_args, const void **args, int nr_res, |
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void **res); |
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/* determine whether OFW is available and lives in the proper memory */ |
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extern void olpc_ofw_detect(void); |
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/* install OFW's pde permanently into the kernel's pgtable */ |
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extern void setup_olpc_ofw_pgd(void); |
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/* check if OFW was detected during boot */ |
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extern bool olpc_ofw_present(void); |
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extern void olpc_dt_build_devicetree(void); |
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#else /* !CONFIG_OLPC */ |
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static inline void olpc_ofw_detect(void) { } |
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static inline void setup_olpc_ofw_pgd(void) { } |
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static inline void olpc_dt_build_devicetree(void) { } |
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#endif /* !CONFIG_OLPC */ |
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#endif /* _ASM_X86_OLPC_OFW_H */
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