1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Derived from IRIX <sys/SN/gda.h>. 7 * 8 * Copyright (C) 1992 - 1997, 2000 Silicon Graphics, Inc. 9 * 10 * gda.h -- Contains the data structure for the global data area, 11 * The GDA contains information communicated between the 12 * PROM, SYMMON, and the kernel. 13 */ 14 #ifndef _ASM_SN_GDA_H 15 #define _ASM_SN_GDA_H 16 17 #include <asm/sn/addrs.h> 18 19 #define GDA_MAGIC 0x58464552 20 21 /* 22 * GDA Version History 23 * 24 * Version # | Change 25 * -------------+------------------------------------------------------- 26 * 1 | Initial SN0 version 27 * 2 | Prom sets g_partid field to the partition number. 0 IS 28 * | a valid partition #. 29 */ 30 31 #define GDA_VERSION 2 /* Current GDA version # */ 32 33 #define G_MAGICOFF 0 34 #define G_VERSIONOFF 4 35 #define G_PROMOPOFF 6 36 #define G_MASTEROFF 8 37 #define G_VDSOFF 12 38 #define G_HKDNORMOFF 16 39 #define G_HKDUTLBOFF 24 40 #define G_HKDXUTLBOFF 32 41 #define G_PARTIDOFF 40 42 #define G_TABLEOFF 128 43 44 #ifndef __ASSEMBLY__ 45 46 typedef struct gda { 47 u32 g_magic; /* GDA magic number */ 48 u16 g_version; /* Version of this structure */ 49 u16 g_masterid; /* The NASID:CPUNUM of the master cpu */ 50 u32 g_promop; /* Passes requests from the kernel to prom */ 51 u32 g_vds; /* Store the virtual dipswitches here */ 52 void **g_hooked_norm;/* ptr to pda loc for norm hndlr */ 53 void **g_hooked_utlb;/* ptr to pda loc for utlb hndlr */ 54 void **g_hooked_xtlb;/* ptr to pda loc for xtlb hndlr */ 55 int g_partid; /* partition id */ 56 int g_symmax; /* Max symbols in name table. */ 57 void *g_dbstab; /* Address of idbg symbol table */ 58 char *g_nametab; /* Address of idbg name table */ 59 void *g_ktext_repmask; 60 /* Pointer to a mask of nodes with copies 61 * of the kernel. */ 62 char g_padding[56]; /* pad out to 128 bytes */ 63 nasid_t g_nasidtable[MAX_NUMNODES]; /* NASID of each node */ 64 } gda_t; 65 66 #define GDA ((gda_t*) GDA_ADDR(get_nasid())) 67 68 #endif /* !__ASSEMBLY__ */ 69 /* 70 * Define: PART_GDA_VERSION 71 * Purpose: Define the minimum version of the GDA required, lower 72 * revisions assume GDA is NOT set up, and read partition 73 * information from the board info. 74 */ 75 #define PART_GDA_VERSION 2 76 77 /* 78 * The following requests can be sent to the PROM during startup. 79 */ 80 81 #define PROMOP_MAGIC 0x0ead0000 82 #define PROMOP_MAGIC_MASK 0x0fff0000 83 84 #define PROMOP_BIST_SHIFT 11 85 #define PROMOP_BIST_MASK (0x3 << 11) 86 87 #define PROMOP_REG PI_ERR_STACK_ADDR_A 88 89 #define PROMOP_INVALID (PROMOP_MAGIC | 0x00) 90 #define PROMOP_HALT (PROMOP_MAGIC | 0x10) 91 #define PROMOP_POWERDOWN (PROMOP_MAGIC | 0x20) 92 #define PROMOP_RESTART (PROMOP_MAGIC | 0x30) 93 #define PROMOP_REBOOT (PROMOP_MAGIC | 0x40) 94 #define PROMOP_IMODE (PROMOP_MAGIC | 0x50) 95 96 #define PROMOP_CMD_MASK 0x00f0 97 #define PROMOP_OPTIONS_MASK 0xfff0 98 99 #define PROMOP_SKIP_DIAGS 0x0100 /* don't bother running diags */ 100 #define PROMOP_SKIP_MEMINIT 0x0200 /* don't bother initing memory */ 101 #define PROMOP_SKIP_DEVINIT 0x0400 /* don't bother initing devices */ 102 #define PROMOP_BIST1 0x0800 /* keep track of which BIST ran */ 103 #define PROMOP_BIST2 0x1000 /* keep track of which BIST ran */ 104 105 #endif /* _ASM_SN_GDA_H */ 106