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gda.h

/*
 * 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__

00046 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 */

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