/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Derived from IRIX <sys/SN/gda.h>.
*
* Copyright (C) 1992 - 1997, 2000 Silicon Graphics, Inc.
*
* gda.h -- Contains the data structure for the global data area,
* The GDA contains information communicated between the
* PROM, SYMMON, and the kernel.
*/
#ifndef _ASM_SN_GDA_H
#define _ASM_SN_GDA_H

#include <asm/sn/addrs.h>

#define GDA_MAGIC 0x58464552

/*
* GDA Version History
*
* Version # | Change
* -------------+-------------------------------------------------------
* 1 | Initial SN0 version
* 2 | Prom sets g_partid field to the partition number. 0 IS
* | a valid partition #.
*/

#define GDA_VERSION 2 /* Current GDA version # */

#define G_MAGICOFF 0
#define G_VERSIONOFF 4
#define G_PROMOPOFF 6
#define G_MASTEROFF 8
#define G_VDSOFF 12
#define G_HKDNORMOFF 16
#define G_HKDUTLBOFF 24
#define G_HKDXUTLBOFF 32
#define G_PARTIDOFF 40
#define G_TABLEOFF 128

#ifndef __ASSEMBLY__

typedef struct gda {
u32 g_magic; /* GDA magic number */
u16 g_version; /* Version of this structure */
u16 g_masterid; /* The NASID:CPUNUM of the master cpu */
u32 g_promop; /* Passes requests from the kernel to prom */
u32 g_vds; /* Store the virtual dipswitches here */
void **g_hooked_norm;/* ptr to pda loc for norm hndlr */
void **g_hooked_utlb;/* ptr to pda loc for utlb hndlr */
void **g_hooked_xtlb;/* ptr to pda loc for xtlb hndlr */
int g_partid; /* partition id */
int g_symmax; /* Max symbols in name table. */
void *g_dbstab; /* Address of idbg symbol table */
char *g_nametab; /* Address of idbg name table */
void *g_ktext_repmask;
/* Pointer to a mask of nodes with copies
* of the kernel. */
char g_padding[56]; /* pad out to 128 bytes */
nasid_t g_nasidtable[MAX_COMPACT_NODES]; /* NASID of each node,
* indexed by cnodeid.
*/
} gda_t;

#define GDA ((gda_t*) GDA_ADDR(get_nasid()))

#endif /* !__ASSEMBLY__ */
/*
* Define: PART_GDA_VERSION
* Purpose: Define the minimum version of the GDA required, lower
* revisions assume GDA is NOT set up, and read partition
* information from the board info.
*/
#define PART_GDA_VERSION 2

/*
* The following requests can be sent to the PROM during startup.
*/

#define PROMOP_MAGIC 0x0ead0000
#define PROMOP_MAGIC_MASK 0x0fff0000

#define PROMOP_BIST_SHIFT 11
#define PROMOP_BIST_MASK (0x3 << 11)

#define PROMOP_REG PI_ERR_STACK_ADDR_A

#define PROMOP_INVALID (PROMOP_MAGIC | 0x00)
#define PROMOP_HALT (PROMOP_MAGIC | 0x10)
#define PROMOP_POWERDOWN (PROMOP_MAGIC | 0x20)
#define PROMOP_RESTART (PROMOP_MAGIC | 0x30)
#define PROMOP_REBOOT (PROMOP_MAGIC | 0x40)
#define PROMOP_IMODE (PROMOP_MAGIC | 0x50)

#define PROMOP_CMD_MASK 0x00f0
#define PROMOP_OPTIONS_MASK 0xfff0

#define PROMOP_SKIP_DIAGS 0x0100 /* don't bother running diags */
#define PROMOP_SKIP_MEMINIT 0x0200 /* don't bother initing memory */
#define PROMOP_SKIP_DEVINIT 0x0400 /* don't bother initing devices */
#define PROMOP_BIST1 0x0800 /* keep track of which BIST ran */
#define PROMOP_BIST2 0x1000 /* keep track of which BIST ran */

#endif /* _ASM_SN_GDA_H */