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