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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Derived from IRIX <sys/SN/kldir.h>, revision 1.21.
4 *
5 * Copyright (C) 1992 - 1997, 1999, 2000 Silicon Graphics, Inc.
6 * Copyright (C) 1999, 2000 by Ralf Baechle
7 */
8#ifndef _ASM_SN_SN0_KLDIR_H
9#define _ASM_SN_SN0_KLDIR_H
10
11
12/*
13 * The kldir memory area resides at a fixed place in each node's memory and
14 * provides pointers to most other IP27 memory areas. This allows us to
15 * resize and/or relocate memory areas at a later time without breaking all
16 * firmware and kernels that use them. Indices in the array are
17 * permanently dedicated to areas listed below. Some memory areas (marked
18 * below) reside at a permanently fixed location, but are included in the
19 * directory for completeness.
20 */
21
22/*
23 * The upper portion of the memory map applies during boot
24 * only and is overwritten by IRIX/SYMMON.
25 *
26 * MEMORY MAP PER NODE
27 *
28 * 0x2000000 (32M) +-----------------------------------------+
29 * | IO6 BUFFERS FOR FLASH ENET IOC3 |
30 * 0x1F80000 (31.5M) +-----------------------------------------+
31 * | IO6 TEXT/DATA/BSS/stack |
32 * 0x1C00000 (30M) +-----------------------------------------+
33 * | IO6 PROM DEBUG TEXT/DATA/BSS/stack |
34 * 0x0800000 (28M) +-----------------------------------------+
35 * | IP27 PROM TEXT/DATA/BSS/stack |
36 * 0x1B00000 (27M) +-----------------------------------------+
37 * | IP27 CFG |
38 * 0x1A00000 (26M) +-----------------------------------------+
39 * | Graphics PROM |
40 * 0x1800000 (24M) +-----------------------------------------+
41 * | 3rd Party PROM drivers |
42 * 0x1600000 (22M) +-----------------------------------------+
43 * | |
44 * | Free |
45 * | |
46 * +-----------------------------------------+
47 * | UNIX DEBUG Version |
48 * 0x190000 (2M--) +-----------------------------------------+
49 * | SYMMON |
50 * | (For UNIX Debug only) |
51 * 0x34000 (208K) +-----------------------------------------+
52 * | SYMMON STACK [NUM_CPU_PER_NODE] |
53 * | (For UNIX Debug only) |
54 * 0x25000 (148K) +-----------------------------------------+
55 * | KLCONFIG - II (temp) |
56 * | |
57 * | ---------------------------- |
58 * | |
59 * | UNIX NON-DEBUG Version |
60 * 0x19000 (100K) +-----------------------------------------+
61 *
62 *
63 * The lower portion of the memory map contains information that is
64 * permanent and is used by the IP27PROM, IO6PROM and IRIX.
65 *
66 * 0x19000 (100K) +-----------------------------------------+
67 * | |
68 * | PI Error Spools (32K) |
69 * | |
70 * 0x12000 (72K) +-----------------------------------------+
71 * | Unused |
72 * 0x11c00 (71K) +-----------------------------------------+
73 * | CPU 1 NMI Eframe area |
74 * 0x11a00 (70.5K) +-----------------------------------------+
75 * | CPU 0 NMI Eframe area |
76 * 0x11800 (70K) +-----------------------------------------+
77 * | CPU 1 NMI Register save area |
78 * 0x11600 (69.5K) +-----------------------------------------+
79 * | CPU 0 NMI Register save area |
80 * 0x11400 (69K) +-----------------------------------------+
81 * | GDA (1k) |
82 * 0x11000 (68K) +-----------------------------------------+
83 * | Early cache Exception stack |
84 * | and/or |
85 * | kernel/io6prom nmi registers |
86 * 0x10800 (66k) +-----------------------------------------+
87 * | cache error eframe |
88 * 0x10400 (65K) +-----------------------------------------+
89 * | Exception Handlers (UALIAS copy) |
90 * 0x10000 (64K) +-----------------------------------------+
91 * | |
92 * | |
93 * | KLCONFIG - I (permanent) (48K) |
94 * | |
95 * | |
96 * | |
97 * 0x4000 (16K) +-----------------------------------------+
98 * | NMI Handler (Protected Page) |
99 * 0x3000 (12K) +-----------------------------------------+
100 * | ARCS PVECTORS (master node only) |
101 * 0x2c00 (11K) +-----------------------------------------+
102 * | ARCS TVECTORS (master node only) |
103 * 0x2800 (10K) +-----------------------------------------+
104 * | LAUNCH [NUM_CPU] |
105 * 0x2400 (9K) +-----------------------------------------+
106 * | Low memory directory (KLDIR) |
107 * 0x2000 (8K) +-----------------------------------------+
108 * | ARCS SPB (1K) |
109 * 0x1000 (4K) +-----------------------------------------+
110 * | Early cache Exception stack |
111 * | and/or |
112 * | kernel/io6prom nmi registers |
113 * 0x800 (2k) +-----------------------------------------+
114 * | cache error eframe |
115 * 0x400 (1K) +-----------------------------------------+
116 * | Exception Handlers |
117 * 0x0 (0K) +-----------------------------------------+
118 */
119
120/*
121 * This is defined here because IP27_SYMMON_STK_SIZE must be at least what
122 * we define here. Since it's set up in the prom. We can't redefine it later
123 * and expect more space to be allocated. The way to find out the true size
124 * of the symmon stacks is to divide SYMMON_STK_SIZE by SYMMON_STK_STRIDE
125 * for a particular node.
126 */
127#define SYMMON_STACK_SIZE 0x8000
128
129#if defined(PROM)
130
131/*
132 * These defines are prom version dependent. No code other than the IP27
133 * prom should attempt to use these values.
134 */
135#define IP27_LAUNCH_OFFSET 0x2400
136#define IP27_LAUNCH_SIZE 0x400
137#define IP27_LAUNCH_COUNT 2
138#define IP27_LAUNCH_STRIDE 0x200
139
140#define IP27_KLCONFIG_OFFSET 0x4000
141#define IP27_KLCONFIG_SIZE 0xc000
142#define IP27_KLCONFIG_COUNT 1
143#define IP27_KLCONFIG_STRIDE 0
144
145#define IP27_NMI_OFFSET 0x3000
146#define IP27_NMI_SIZE 0x40
147#define IP27_NMI_COUNT 2
148#define IP27_NMI_STRIDE 0x40
149
150#define IP27_PI_ERROR_OFFSET 0x12000
151#define IP27_PI_ERROR_SIZE 0x4000
152#define IP27_PI_ERROR_COUNT 1
153#define IP27_PI_ERROR_STRIDE 0
154
155#define IP27_SYMMON_STK_OFFSET 0x25000
156#define IP27_SYMMON_STK_SIZE 0xe000
157#define IP27_SYMMON_STK_COUNT 2
158/* IP27_SYMMON_STK_STRIDE must be >= SYMMON_STACK_SIZE */
159#define IP27_SYMMON_STK_STRIDE 0x7000
160
161#define IP27_FREEMEM_OFFSET 0x19000
162#define IP27_FREEMEM_SIZE -1
163#define IP27_FREEMEM_COUNT 1
164#define IP27_FREEMEM_STRIDE 0
165
166#endif /* PROM */
167/*
168 * There will be only one of these in a partition so the IO6 must set it up.
169 */
170#define IO6_GDA_OFFSET 0x11000
171#define IO6_GDA_SIZE 0x400
172#define IO6_GDA_COUNT 1
173#define IO6_GDA_STRIDE 0
174
175/*
176 * save area of kernel nmi regs in the prom format
177 */
178#define IP27_NMI_KREGS_OFFSET 0x11400
179#define IP27_NMI_KREGS_CPU_SIZE 0x200
180/*
181 * save area of kernel nmi regs in eframe format
182 */
183#define IP27_NMI_EFRAME_OFFSET 0x11800
184#define IP27_NMI_EFRAME_SIZE 0x200
185
186#endif /* _ASM_SN_SN0_KLDIR_H */