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/kldir.h>, revision 1.21.
7 *
8 * Copyright (C) 1992 - 1997, 1999, 2000 Silicon Graphics, Inc.
9 * Copyright (C) 1999, 2000 by Ralf Baechle
10 */
11 #ifndef _ASM_SN_KLDIR_H
12 #define _ASM_SN_KLDIR_H
13
14
15 /*
16 * The kldir memory area resides at a fixed place in each node's memory and
17 * provides pointers to most other IP27 memory areas. This allows us to
18 * resize and/or relocate memory areas at a later time without breaking all
19 * firmware and kernels that use them. Indices in the array are
20 * permanently dedicated to areas listed below. Some memory areas (marked
21 * below) reside at a permanently fixed location, but are included in the
22 * directory for completeness.
23 */
24
25 #define KLDIR_MAGIC 0x434d5f53505f5357
26
27 /*
28 * The upper portion of the memory map applies during boot
29 * only and is overwritten by IRIX/SYMMON.
30 *
31 * MEMORY MAP PER NODE
32 *
33 * 0x2000000 (32M) +-----------------------------------------+
34 * | IO6 BUFFERS FOR FLASH ENET IOC3 |
35 * 0x1F80000 (31.5M) +-----------------------------------------+
36 * | IO6 TEXT/DATA/BSS/stack |
37 * 0x1C00000 (30M) +-----------------------------------------+
38 * | IO6 PROM DEBUG TEXT/DATA/BSS/stack |
39 * 0x0800000 (28M) +-----------------------------------------+
40 * | IP27 PROM TEXT/DATA/BSS/stack |
41 * 0x1B00000 (27M) +-----------------------------------------+
42 * | IP27 CFG |
43 * 0x1A00000 (26M) +-----------------------------------------+
44 * | Graphics PROM |
45 * 0x1800000 (24M) +-----------------------------------------+
46 * | 3rd Party PROM drivers |
47 * 0x1600000 (22M) +-----------------------------------------+
48 * | |
49 * | Free |
50 * | |
51 * +-----------------------------------------+
52 * | UNIX DEBUG Version |
53 * 0x190000 (2M--) +-----------------------------------------+
54 * | SYMMON |
55 * | (For UNIX Debug only) |
56 * 0x34000 (208K) +-----------------------------------------+
57 * | SYMMON STACK [NUM_CPU_PER_NODE] |
58 * | (For UNIX Debug only) |
59 * 0x25000 (148K) +-----------------------------------------+
60 * | KLCONFIG - II (temp) |
61 * | |
62 * | ---------------------------- |
63 * | |
64 * | UNIX NON-DEBUG Version |
65 * 0x19000 (100K) +-----------------------------------------+
66 *
67 *
68 * The lower portion of the memory map contains information that is
69 * permanent and is used by the IP27PROM, IO6PROM and IRIX.
70 *
71 * 0x19000 (100K) +-----------------------------------------+
72 * | |
73 * | PI Error Spools (32K) |
74 * | |
75 * 0x12000 (72K) +-----------------------------------------+
76 * | Unused |
77 * 0x11c00 (71K) +-----------------------------------------+
78 * | CPU 1 NMI Eframe area |
79 * 0x11a00 (70.5K) +-----------------------------------------+
80 * | CPU 0 NMI Eframe area |
81 * 0x11800 (70K) +-----------------------------------------+
82 * | CPU 1 NMI Register save area |
83 * 0x11600 (69.5K) +-----------------------------------------+
84 * | CPU 0 NMI Register save area |
85 * 0x11400 (69K) +-----------------------------------------+
86 * | GDA (1k) |
87 * 0x11000 (68K) +-----------------------------------------+
88 * | Early cache Exception stack |
89 * | and/or |
90 * | kernel/io6prom nmi registers |
91 * 0x10800 (66k) +-----------------------------------------+
92 * | cache error eframe |
93 * 0x10400 (65K) +-----------------------------------------+
94 * | Exception Handlers (UALIAS copy) |
95 * 0x10000 (64K) +-----------------------------------------+
96 * | |
97 * | |
98 * | KLCONFIG - I (permanent) (48K) |
99 * | |
100 * | |
101 * | |
102 * 0x4000 (16K) +-----------------------------------------+
103 * | NMI Handler (Protected Page) |
104 * 0x3000 (12K) +-----------------------------------------+
105 * | ARCS PVECTORS (master node only) |
106 * 0x2c00 (11K) +-----------------------------------------+
107 * | ARCS TVECTORS (master node only) |
108 * 0x2800 (10K) +-----------------------------------------+
109 * | LAUNCH [NUM_CPU] |
110 * 0x2400 (9K) +-----------------------------------------+
111 * | Low memory directory (KLDIR) |
112 * 0x2000 (8K) +-----------------------------------------+
113 * | ARCS SPB (1K) |
114 * 0x1000 (4K) +-----------------------------------------+
115 * | Early cache Exception stack |
116 * | and/or |
117 * | kernel/io6prom nmi registers |
118 * 0x800 (2k) +-----------------------------------------+
119 * | cache error eframe |
120 * 0x400 (1K) +-----------------------------------------+
121 * | Exception Handlers |
122 * 0x0 (0K) +-----------------------------------------+
123 */
124
125 #ifdef __ASSEMBLY__
126 #define KLDIR_OFF_MAGIC 0x00
127 #define KLDIR_OFF_OFFSET 0x08
128 #define KLDIR_OFF_POINTER 0x10
129 #define KLDIR_OFF_SIZE 0x18
130 #define KLDIR_OFF_COUNT 0x20
131 #define KLDIR_OFF_STRIDE 0x28
132 #endif /* __ASSEMBLY__ */
133
134 /*
135 * This is defined here because IP27_SYMMON_STK_SIZE must be at least what
136 * we define here. Since it's set up in the prom. We can't redefine it later
137 * and expect more space to be allocated. The way to find out the true size
138 * of the symmon stacks is to divide SYMMON_STK_SIZE by SYMMON_STK_STRIDE
139 * for a particular node.
140 */
141 #define SYMMON_STACK_SIZE 0x8000
142
143 #if defined(PROM)
144
145 /*
146 * These defines are prom version dependent. No code other than the IP27
147 * prom should attempt to use these values.
148 */
149 #define IP27_LAUNCH_OFFSET 0x2400
150 #define IP27_LAUNCH_SIZE 0x400
151 #define IP27_LAUNCH_COUNT 2
152 #define IP27_LAUNCH_STRIDE 0x200
153
154 #define IP27_KLCONFIG_OFFSET 0x4000
155 #define IP27_KLCONFIG_SIZE 0xc000
156 #define IP27_KLCONFIG_COUNT 1
157 #define IP27_KLCONFIG_STRIDE 0
158
159 #define IP27_NMI_OFFSET 0x3000
160 #define IP27_NMI_SIZE 0x40
161 #define IP27_NMI_COUNT 2
162 #define IP27_NMI_STRIDE 0x40
163
164 #define IP27_PI_ERROR_OFFSET 0x12000
165 #define IP27_PI_ERROR_SIZE 0x4000
166 #define IP27_PI_ERROR_COUNT 1
167 #define IP27_PI_ERROR_STRIDE 0
168
169 #define IP27_SYMMON_STK_OFFSET 0x25000
170 #define IP27_SYMMON_STK_SIZE 0xe000
171 #define IP27_SYMMON_STK_COUNT 2
172 /* IP27_SYMMON_STK_STRIDE must be >= SYMMON_STACK_SIZE */
173 #define IP27_SYMMON_STK_STRIDE 0x7000
174
175 #define IP27_FREEMEM_OFFSET 0x19000
176 #define IP27_FREEMEM_SIZE -1
177 #define IP27_FREEMEM_COUNT 1
178 #define IP27_FREEMEM_STRIDE 0
179
180 #endif /* PROM */
181 /*
182 * There will be only one of these in a partition so the IO6 must set it up.
183 */
184 #define IO6_GDA_OFFSET 0x11000
185 #define IO6_GDA_SIZE 0x400
186 #define IO6_GDA_COUNT 1
187 #define IO6_GDA_STRIDE 0
188
189 /*
190 * save area of kernel nmi regs in the prom format
191 */
192 #define IP27_NMI_KREGS_OFFSET 0x11400
193 #define IP27_NMI_KREGS_CPU_SIZE 0x200
194 /*
195 * save area of kernel nmi regs in eframe format
196 */
197 #define IP27_NMI_EFRAME_OFFSET 0x11800
198 #define IP27_NMI_EFRAME_SIZE 0x200
199
200 #define KLDIR_ENT_SIZE 0x40
201 #define KLDIR_MAX_ENTRIES (0x400 / 0x40)
202
203 #ifndef __ASSEMBLY__
204 typedef struct kldir_ent_s {
205 u64 magic; /* Indicates validity of entry */
206 off_t offset; /* Offset from start of node space */
207 unsigned long pointer; /* Pointer to area in some cases */
208 size_t size; /* Size in bytes */
209 u64 count; /* Repeat count if array, 1 if not */
210 size_t stride; /* Stride if array, 0 if not */
211 char rsvd[16]; /* Pad entry to 0x40 bytes */
212 /* NOTE: These 16 bytes are used in the Partition KLDIR
213 entry to store partition info. Refer to klpart.h for this. */
214 } kldir_ent_t;
215 #endif /* !__ASSEMBLY__ */
216
217 #endif /* _ASM_SN_KLDIR_H */