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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2#ifndef _SYSTEMCFG_H
3#define _SYSTEMCFG_H
4
5/*
6 * Copyright (C) 2002 Peter Bergner <bergner@vnet.ibm.com>, IBM
7 * Copyright (C) 2005 Benjamin Herrenschmidy <benh@kernel.crashing.org>,
8 * IBM Corp.
9 */
10
11#ifdef CONFIG_PPC64
12
13/*
14 * If the major version changes we are incompatible.
15 * Minor version changes are a hint.
16 */
17#define SYSTEMCFG_MAJOR 1
18#define SYSTEMCFG_MINOR 1
19
20#include <linux/types.h>
21
22struct systemcfg {
23 __u8 eye_catcher[16]; /* Eyecatcher: SYSTEMCFG:PPC64 0x00 */
24 struct { /* Systemcfg version numbers */
25 __u32 major; /* Major number 0x10 */
26 __u32 minor; /* Minor number 0x14 */
27 } version;
28
29 /* Note about the platform flags: it now only contains the lpar
30 * bit. The actual platform number is dead and buried
31 */
32 __u32 platform; /* Platform flags 0x18 */
33 __u32 processor; /* Processor type 0x1C */
34 __u64 processorCount; /* # of physical processors 0x20 */
35 __u64 physicalMemorySize; /* Size of real memory(B) 0x28 */
36 __u64 tb_orig_stamp; /* (NU) Timebase at boot 0x30 */
37 __u64 tb_ticks_per_sec; /* Timebase tics / sec 0x38 */
38 __u64 tb_to_xs; /* (NU) Inverse of TB to 2^20 0x40 */
39 __u64 stamp_xsec; /* (NU) 0x48 */
40 __u64 tb_update_count; /* (NU) Timebase atomicity ctr 0x50 */
41 __u32 tz_minuteswest; /* (NU) Min. west of Greenwich 0x58 */
42 __u32 tz_dsttime; /* (NU) Type of dst correction 0x5C */
43 __u32 dcache_size; /* L1 d-cache size 0x60 */
44 __u32 dcache_line_size; /* L1 d-cache line size 0x64 */
45 __u32 icache_size; /* L1 i-cache size 0x68 */
46 __u32 icache_line_size; /* L1 i-cache line size 0x6C */
47};
48
49extern struct systemcfg *systemcfg;
50
51#endif /* CONFIG_PPC64 */
52#endif /* _SYSTEMCFG_H */