include/asm-ppc64/iSeries/HvReleaseData.h

   1 /*
   2  * HvReleaseData.h
   3  * Copyright (C) 2001  Mike Corrigan IBM Corporation
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  18  */
  19 #ifndef _HVRELEASEDATA_H
  20 #define _HVRELEASEDATA_H
  21
  22 //=============================================================================
  23 //
  24 //   This control block contains the critical information about the
  25 //   release so that it can be changed in the future (ie, the virtual
  26 //   address of the OS's NACA).
  27 //
  28 #include <asm/types.h>
  29 #include <asm/naca.h>
  30
  31 //=============================================================================
  32 //
  33 //      When we IPL a secondary partition, we will check if if the
  34 //      secondary xMinPlicVrmIndex > the primary xVrmIndex.
  35 //      If it is then this tells PLIC that this secondary is not
  36 //      supported running on this "old" of a level of PLIC.
  37 //
  38 //      Likewise, we will compare the primary xMinSlicVrmIndex to
  39 //      the secondary xVrmIndex.
  40 //      If the primary xMinSlicVrmDelta > secondary xVrmDelta then we
  41 //      know that this PLIC does not support running an OS "that old".
  42 //
  43 //=============================================================================
  44
  45 struct  HvReleaseData
  46 {
  47         u32     xDesc;                  // Descriptor   "HvRD" ebcdic   x00-x03
  48         u16     xSize;                  // Size of this control block   x04-x05
  49         u16     xVpdAreasPtrOffset;     // Offset in NACA of ItVpdAreas x06-x07
  50         struct  naca_struct * xSlicNacaAddr; // Virt addr of SLIC NACA  x08-x0F
  51         u32     xMsNucDataOffset;       // Offset of Linux Mapping Data x10-x13
  52         u32     xRsvd1;                 // Reserved                     x14-x17
  53         u16     xTagsMode:1;            // 0 == tags active, 1 == tags inactive
  54         u16     xAddressSize:1;         // 0 == 64-bit, 1 == 32-bit
  55         u16     xNoSharedProcs:1;       // 0 == shared procs, 1 == no shared
  56         u16     xNoHMT:1;               // 0 == allow HMT, 1 == no HMT
  57         u16     xRsvd2:12;              // Reserved                     x18-x19
  58         u16     xVrmIndex;              // VRM Index of OS image        x1A-x1B
  59         u16     xMinSupportedPlicVrmIndex;// Min PLIC level  (soft)     x1C-x1D
  60         u16     xMinCompatablePlicVrmIndex;// Min PLIC levelP (hard)    x1E-x1F
  61         char    xVrmName[12];           // Displayable name             x20-x2B
  62         char    xRsvd3[20];             // Reserved                     x2C-x3F
  63 };
  64
  65 #endif /* _HVRELEASEDATA_H */