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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 
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