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 */
187