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