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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#include <linux/config.h>
15
16#if defined(CONFIG_SGI_IO)
17#include <asm/hack.h>
18#endif
19
20/*
21 * The kldir memory area resides at a fixed place in each node's memory and
22 * provides pointers to most other IP27 memory areas. This allows us to
23 * resize and/or relocate memory areas at a later time without breaking all
24 * firmware and kernels that use them. Indices in the array are
25 * permanently dedicated to areas listed below. Some memory areas (marked
26 * below) reside at a permanently fixed location, but are included in the
27 * directory for completeness.
28 */
29
30#define KLDIR_MAGIC 0x434d5f53505f5357
31
32/*
33 * The upper portion of the memory map applies during boot
34 * only and is overwritten by IRIX/SYMMON.
35 *
36 * MEMORY MAP PER NODE
37 *
38 * 0x2000000 (32M) +-----------------------------------------+
39 * | IO6 BUFFERS FOR FLASH ENET IOC3 |
40 * 0x1F80000 (31.5M) +-----------------------------------------+
41 * | IO6 TEXT/DATA/BSS/stack |
42 * 0x1C00000 (30M) +-----------------------------------------+
43 * | IO6 PROM DEBUG TEXT/DATA/BSS/stack |
44 * 0x0800000 (28M) +-----------------------------------------+
45 * | IP27 PROM TEXT/DATA/BSS/stack |
46 * 0x1B00000 (27M) +-----------------------------------------+
47 * | IP27 CFG |
48 * 0x1A00000 (26M) +-----------------------------------------+
49 * | Graphics PROM |
50 * 0x1800000 (24M) +-----------------------------------------+
51 * | 3rd Party PROM drivers |
52 * 0x1600000 (22M) +-----------------------------------------+
53 * | |
54 * | Free |
55 * | |
56 * +-----------------------------------------+
57 * | UNIX DEBUG Version |
58 * 0x190000 (2M--) +-----------------------------------------+
59 * | SYMMON |
60 * | (For UNIX Debug only) |
61 * 0x34000 (208K) +-----------------------------------------+
62 * | SYMMON STACK [NUM_CPU_PER_NODE] |
63 * | (For UNIX Debug only) |
64 * 0x25000 (148K) +-----------------------------------------+
65 * | KLCONFIG - II (temp) |
66 * | |
67 * | ---------------------------- |
68 * | |
69 * | UNIX NON-DEBUG Version |
70 * 0x19000 (100K) +-----------------------------------------+
71 *
72 *
73 * The lower portion of the memory map contains information that is
74 * permanent and is used by the IP27PROM, IO6PROM and IRIX.
75 *
76 * 0x19000 (100K) +-----------------------------------------+
77 * | |
78 * | PI Error Spools (32K) |
79 * | |
80 * 0x12000 (72K) +-----------------------------------------+
81 * | Unused |
82 * 0x11c00 (71K) +-----------------------------------------+
83 * | CPU 1 NMI Eframe area |
84 * 0x11a00 (70.5K) +-----------------------------------------+
85 * | CPU 0 NMI Eframe area |
86 * 0x11800 (70K) +-----------------------------------------+
87 * | CPU 1 NMI Register save area |
88 * 0x11600 (69.5K) +-----------------------------------------+
89 * | CPU 0 NMI Register save area |
90 * 0x11400 (69K) +-----------------------------------------+
91 * | GDA (1k) |
92 * 0x11000 (68K) +-----------------------------------------+
93 * | Early cache Exception stack |
94 * | and/or |
95 * | kernel/io6prom nmi registers |
96 * 0x10800 (66k) +-----------------------------------------+
97 * | cache error eframe |
98 * 0x10400 (65K) +-----------------------------------------+
99 * | Exception Handlers (UALIAS copy) |
100 * 0x10000 (64K) +-----------------------------------------+
101 * | |
102 * | |
103 * | KLCONFIG - I (permanent) (48K) |
104 * | |
105 * | |
106 * | |
107 * 0x4000 (16K) +-----------------------------------------+
108 * | NMI Handler (Protected Page) |
109 * 0x3000 (12K) +-----------------------------------------+
110 * | ARCS PVECTORS (master node only) |
111 * 0x2c00 (11K) +-----------------------------------------+
112 * | ARCS TVECTORS (master node only) |
113 * 0x2800 (10K) +-----------------------------------------+
114 * | LAUNCH [NUM_CPU] |
115 * 0x2400 (9K) +-----------------------------------------+
116 * | Low memory directory (KLDIR) |
117 * 0x2000 (8K) +-----------------------------------------+
118 * | ARCS SPB (1K) |
119 * 0x1000 (4K) +-----------------------------------------+
120 * | Early cache Exception stack |
121 * | and/or |
122 * | kernel/io6prom nmi registers |
123 * 0x800 (2k) +-----------------------------------------+
124 * | cache error eframe |
125 * 0x400 (1K) +-----------------------------------------+
126 * | Exception Handlers |
127 * 0x0 (0K) +-----------------------------------------+
128 */
129
130#ifdef __ASSEMBLY__
131#define KLDIR_OFF_MAGIC 0x00
132#define KLDIR_OFF_OFFSET 0x08
133#define KLDIR_OFF_POINTER 0x10
134#define KLDIR_OFF_SIZE 0x18
135#define KLDIR_OFF_COUNT 0x20
136#define KLDIR_OFF_STRIDE 0x28
137#endif /* __ASSEMBLY__ */
138
139#if !defined(CONFIG_SGI_IO)
140
141/*
142 * This is defined here because IP27_SYMMON_STK_SIZE must be at least what
143 * we define here. Since it's set up in the prom. We can't redefine it later
144 * and expect more space to be allocated. The way to find out the true size
145 * of the symmon stacks is to divide SYMMON_STK_SIZE by SYMMON_STK_STRIDE
146 * for a particular node.
147 */
148#define SYMMON_STACK_SIZE 0x8000
149
150#if defined (PROM) || defined (SABLE)
151
152/*
153 * These defines are prom version dependent. No code other than the IP27
154 * prom should attempt to use these values.
155 */
156#define IP27_LAUNCH_OFFSET 0x2400
157#define IP27_LAUNCH_SIZE 0x400
158#define IP27_LAUNCH_COUNT 2
159#define IP27_LAUNCH_STRIDE 0x200
160
161#define IP27_KLCONFIG_OFFSET 0x4000
162#define IP27_KLCONFIG_SIZE 0xc000
163#define IP27_KLCONFIG_COUNT 1
164#define IP27_KLCONFIG_STRIDE 0
165
166#define IP27_NMI_OFFSET 0x3000
167#define IP27_NMI_SIZE 0x40
168#define IP27_NMI_COUNT 2
169#define IP27_NMI_STRIDE 0x40
170
171#define IP27_PI_ERROR_OFFSET 0x12000
172#define IP27_PI_ERROR_SIZE 0x4000
173#define IP27_PI_ERROR_COUNT 1
174#define IP27_PI_ERROR_STRIDE 0
175
176#define IP27_SYMMON_STK_OFFSET 0x25000
177#define IP27_SYMMON_STK_SIZE 0xe000
178#define IP27_SYMMON_STK_COUNT 2
179/* IP27_SYMMON_STK_STRIDE must be >= SYMMON_STACK_SIZE */
180#define IP27_SYMMON_STK_STRIDE 0x7000
181
182#define IP27_FREEMEM_OFFSET 0x19000
183#define IP27_FREEMEM_SIZE -1
184#define IP27_FREEMEM_COUNT 1
185#define IP27_FREEMEM_STRIDE 0
186
187#endif /* PROM || SABLE*/
188/*
189 * There will be only one of these in a partition so the IO6 must set it up.
190 */
191#define IO6_GDA_OFFSET 0x11000
192#define IO6_GDA_SIZE 0x400
193#define IO6_GDA_COUNT 1
194#define IO6_GDA_STRIDE 0
195
196/*
197 * save area of kernel nmi regs in the prom format
198 */
199#define IP27_NMI_KREGS_OFFSET 0x11400
200#define IP27_NMI_KREGS_CPU_SIZE 0x200
201/*
202 * save area of kernel nmi regs in eframe format
203 */
204#define IP27_NMI_EFRAME_OFFSET 0x11800
205#define IP27_NMI_EFRAME_SIZE 0x200
206
207#define KLDIR_ENT_SIZE 0x40
208#define KLDIR_MAX_ENTRIES (0x400 / 0x40)
209
210#endif /* !CONFIG_SGI_IO */
211
212#ifndef __ASSEMBLY__
213typedef struct kldir_ent_s {
214 u64 magic; /* Indicates validity of entry */
215 off_t offset; /* Offset from start of node space */
216#if defined(CONFIG_SGI_IO) /* FIXME */
217 __psunsigned_t pointer; /* Pointer to area in some cases */
218#else
219 unsigned long pointer; /* Pointer to area in some cases */
220#endif
221 size_t size; /* Size in bytes */
222 u64 count; /* Repeat count if array, 1 if not */
223 size_t stride; /* Stride if array, 0 if not */
224 char rsvd[16]; /* Pad entry to 0x40 bytes */
225 /* NOTE: These 16 bytes are used in the Partition KLDIR
226 entry to store partition info. Refer to klpart.h for this. */
227} kldir_ent_t;
228#endif /* !__ASSEMBLY__ */
229
230#if defined(CONFIG_SGI_IO)
231
232#define KLDIR_ENT_SIZE 0x40
233#define KLDIR_MAX_ENTRIES (0x400 / 0x40)
234
235/*
236 * The actual offsets of each memory area are machine-dependent
237 */
238#ifdef CONFIG_SGI_IP27
239// Not yet #include <asm/sn/sn0/kldir.h>
240#elif defined(CONFIG_SGI_IP35)
241#include <asm/sn/sn1/kldir.h>
242#else
243#error "kldir.h is currently defined for IP27 and IP35 platforms only"
244#endif
245
246#endif /* CONFIG_SGI_IO */
247
248#endif /* _ASM_SN_KLDIR_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-13 15:13:03 -0500