arch/powerpc/include/asm/systemcfg.h

   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
  22 struct 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
  49 extern struct systemcfg *systemcfg;
  50
  51 #endif /* CONFIG_PPC64 */
  52 #endif /* _SYSTEMCFG_H */