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 */
218