1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_POWERPC_SPARSEMEM_H
3#define _ASM_POWERPC_SPARSEMEM_H 1
4#ifdef __KERNEL__
5
6#ifdef CONFIG_SPARSEMEM
7/*
8 * SECTION_SIZE_BITS		2^N: how big each section will be
9 * MAX_PHYSMEM_BITS		2^N: how much memory we can have in that space
10 */
11#define SECTION_SIZE_BITS       24
12
13#endif /* CONFIG_SPARSEMEM */
14
15#ifdef CONFIG_MEMORY_HOTPLUG
16extern int remove_section_mapping(unsigned long start, unsigned long end);
17extern int memory_add_physaddr_to_nid(u64 start);
18#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid
19
20#ifdef CONFIG_NUMA
21extern int hot_add_scn_to_nid(unsigned long scn_addr);
22#else
23static inline int hot_add_scn_to_nid(unsigned long scn_addr)
24{
25	return 0;
26}
27#endif /* CONFIG_NUMA */
28#endif /* CONFIG_MEMORY_HOTPLUG */
29#endif /* __KERNEL__ */
30#endif /* _ASM_POWERPC_SPARSEMEM_H */
31