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
6 * Derived from IRIX <sys/SN/kldir.h>, revision 1.21.
8 * Copyright (C) 1992 - 1997, 1999, 2000 Silicon Graphics, Inc.
9 * Copyright (C) 1999, 2000 by Ralf Baechle
11 #ifndef _ASM_SN_KLDIR_H
12 #define _ASM_SN_KLDIR_H
14 #include <linux/config.h>
16 #if defined(CONFIG_SGI_IO)
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.
30 #define KLDIR_MAGIC 0x434d5f53505f5357
33 * The upper portion of the memory map applies during boot
34 * only and is overwritten by IRIX/SYMMON.
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) +-----------------------------------------+
48 * 0x1A00000 (26M) +-----------------------------------------+
50 * 0x1800000 (24M) +-----------------------------------------+
51 * | 3rd Party PROM drivers |
52 * 0x1600000 (22M) +-----------------------------------------+
56 * +-----------------------------------------+
57 * | UNIX DEBUG Version |
58 * 0x190000 (2M--) +-----------------------------------------+
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) |
67 * | ---------------------------- |
69 * | UNIX NON-DEBUG Version |
70 * 0x19000 (100K) +-----------------------------------------+
73 * The lower portion of the memory map contains information that is
74 * permanent and is used by the IP27PROM, IO6PROM and IRIX.
76 * 0x19000 (100K) +-----------------------------------------+
78 * | PI Error Spools (32K) |
80 * 0x12000 (72K) +-----------------------------------------+
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) +-----------------------------------------+
92 * 0x11000 (68K) +-----------------------------------------+
93 * | Early cache Exception stack |
95 * | kernel/io6prom nmi registers |
96 * 0x10800 (66k) +-----------------------------------------+
97 * | cache error eframe |
98 * 0x10400 (65K) +-----------------------------------------+
99 * | Exception Handlers (UALIAS copy) |
100 * 0x10000 (64K) +-----------------------------------------+
103 * | KLCONFIG - I (permanent) (48K) |
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) +-----------------------------------------+
119 * 0x1000 (4K) +-----------------------------------------+
120 * | Early cache Exception stack |
122 * | kernel/io6prom nmi registers |
123 * 0x800 (2k) +-----------------------------------------+
124 * | cache error eframe |
125 * 0x400 (1K) +-----------------------------------------+
126 * | Exception Handlers |
127 * 0x0 (0K) +-----------------------------------------+
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__ */
139 #if !defined(CONFIG_SGI_IO)
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.
148 #define SYMMON_STACK_SIZE 0x8000
150 #if defined (PROM) || defined (SABLE)
153 * These defines are prom version dependent. No code other than the IP27
154 * prom should attempt to use these values.
156 #define IP27_LAUNCH_OFFSET 0x2400
157 #define IP27_LAUNCH_SIZE 0x400
158 #define IP27_LAUNCH_COUNT 2
159 #define IP27_LAUNCH_STRIDE 0x200
161 #define IP27_KLCONFIG_OFFSET 0x4000
162 #define IP27_KLCONFIG_SIZE 0xc000
163 #define IP27_KLCONFIG_COUNT 1
164 #define IP27_KLCONFIG_STRIDE 0
166 #define IP27_NMI_OFFSET 0x3000
167 #define IP27_NMI_SIZE 0x40
168 #define IP27_NMI_COUNT 2
169 #define IP27_NMI_STRIDE 0x40
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
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
182 #define IP27_FREEMEM_OFFSET 0x19000
183 #define IP27_FREEMEM_SIZE -1
184 #define IP27_FREEMEM_COUNT 1
185 #define IP27_FREEMEM_STRIDE 0
187 #endif /* PROM || SABLE*/
189 * There will be only one of these in a partition so the IO6 must set it up.
191 #define IO6_GDA_OFFSET 0x11000
192 #define IO6_GDA_SIZE 0x400
193 #define IO6_GDA_COUNT 1
194 #define IO6_GDA_STRIDE 0
197 * save area of kernel nmi regs in the prom format
199 #define IP27_NMI_KREGS_OFFSET 0x11400
200 #define IP27_NMI_KREGS_CPU_SIZE 0x200
202 * save area of kernel nmi regs in eframe format
204 #define IP27_NMI_EFRAME_OFFSET 0x11800
205 #define IP27_NMI_EFRAME_SIZE 0x200
207 #define KLDIR_ENT_SIZE 0x40
208 #define KLDIR_MAX_ENTRIES (0x400 / 0x40)
210 #endif /* !CONFIG_SGI_IO */
213 typedef 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 */
219 unsigned long pointer
; /* Pointer to area in some cases */
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. */
228 #endif /* !__ASSEMBLY__ */
230 #if defined(CONFIG_SGI_IO)
232 #define KLDIR_ENT_SIZE 0x40
233 #define KLDIR_MAX_ENTRIES (0x400 / 0x40)
236 * The actual offsets of each memory area are machine-dependent
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>
243 #error "kldir.h is currently defined for IP27 and IP35 platforms only"
246 #endif /* CONFIG_SGI_IO */
248 #endif /* _ASM_SN_KLDIR_H */