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
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