arch/powerpc/platforms/iseries/release_data.h

   1 /*
   2  * Copyright (C) 2001  Mike Corrigan IBM Corporation
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  17  */
  18 #ifndef _ISERIES_RELEASE_DATA_H
  19 #define _ISERIES_RELEASE_DATA_H
  20
  21 /*
  22  * This control block contains the critical information about the
  23  * release so that it can be changed in the future (ie, the virtual
  24  * address of the OS's NACA).
  25  */
  26 #include <asm/types.h>
  27 #include "naca.h"
  28
  29 /*
  30  * When we IPL a secondary partition, we will check if if the
  31  * secondary xMinPlicVrmIndex > the primary xVrmIndex.
  32  * If it is then this tells PLIC that this secondary is not
  33  * supported running on this "old" of a level of PLIC.
  34  *
  35  * Likewise, we will compare the primary xMinSlicVrmIndex to
  36  * the secondary xVrmIndex.
  37  * If the primary xMinSlicVrmDelta > secondary xVrmDelta then we
  38  * know that this PLIC does not support running an OS "that old".
  39  */
  40
  41 #define HVREL_TAGSINACTIVE      0x8000
  42 #define HVREL_32BIT             0x4000
  43 #define HVREL_NOSHAREDPROCS     0x2000
  44 #define HVREL_NOHMT             0x1000
  45
  46 struct HvReleaseData {
  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     xFlags;
  54         u16     xVrmIndex;      /* VRM Index of OS image        x1A-x1B */
  55         u16     xMinSupportedPlicVrmIndex; /* Min PLIC level  (soft) x1C-x1D */
  56         u16     xMinCompatablePlicVrmIndex; /* Min PLIC levelP (hard) x1E-x1F */
  57         char    xVrmName[12];   /* Displayable name             x20-x2B */
  58         char    xRsvd3[20];     /* Reserved                     x2C-x3F */
  59 };
  60
  61 extern struct HvReleaseData     hvReleaseData;
  62
  63 #endif /* _ISERIES_RELEASE_DATA_H */