linux/arch/powerpc/platforms/iseries/release_data.h
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   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
  46struct 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
  61extern const struct HvReleaseData       hvReleaseData;
  62
  63#endif /* _ISERIES_RELEASE_DATA_H */
  64