hvreleasedata.h

linux-2.4.29操作系统的源码

/*
 * HvReleaseData.h
 * Copyright (C) 2001  Mike Corrigan IBM Corporation
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

//=============================================================================
//
//   This control block contains the critical information about the 
//   release so that it can be changed in the future (ie, the virtual 
//   address of the OS's NACA).
//
//-----------------------------------------------------------------------------
// Standard Includes
//-----------------------------------------------------------------------------
#ifndef	_PPC64_TYPES_H
#include	<asm/types.h>
#endif

#ifndef _HVRELEASEDATA_H
#define _HVRELEASEDATA_H

//=============================================================================
//
//	When we IPL a secondary partition, we will check if if the 
//	secondary xMinPlicVrmIndex > the primary xVrmIndex.  
//	If it is then this tells PLIC that this secondary is not 
//	supported running on this "old" of a level of PLIC.
//
//	Likewise, we will compare the primary xMinSlicVrmIndex to 
//	the secondary xVrmIndex. 
//	If the primary xMinSlicVrmDelta > secondary xVrmDelta then we 
//	know that this PLIC does not support running an OS "that old".
//
//=============================================================================

struct	HvReleaseData
{
	u32	xDesc;			// Descriptor	"HvRD" ebcdic	x00-x03
	u16	xSize;			// Size of this control block	x04-x05
	u16	xVpdAreasPtrOffset;	// Offset in NACA of ItVpdAreas	x06-x07
	struct  naca_struct * xSlicNacaAddr; // Virt addr of SLIC NACA  x08-x0F
	u32	xMsNucDataOffset;	// Offset of Linux Mapping Data x10-x13
	u32	xRsvd1;			// Reserved			x14-x17
	u16	xTagsMode:1;		// 0 == tags active, 1 == tags inactive
	u16	xAddressSize:1;		// 0 == 64-bit, 1 == 32-bit
	u16	xNoSharedProcs:1;	// 0 == shared procs, 1 == no shared
	u16	xNoHMT:1;		// 0 == allow HMT, 1 == no HMT
	u16	xRsvd2:12;		// Reserved			x18-x19
	u16	xVrmIndex;		// VRM Index of OS image	x1A-x1B
	u16	xMinSupportedPlicVrmIndex;// Min PLIC level  (soft)	x1C-x1D
	u16	xMinCompatablePlicVrmIndex;// Min PLIC levelP (hard)	x1E-x1F
	char	xVrmName[12];		// Displayable name  		x20-x2B
	char	xRsvd3[20];		// Reserved			x2C-x3F
};

#endif // _HVRELEASEDATA_H