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#include <linux/config.h> 15 16#if defined(CONFIG_SGI_IO) 17#include <asm/hack.h> 18#endif 19 20/* 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. 28 */ 29 30#define KLDIR_MAGIC 0x434d5f53505f5357 31 32/* 33 * The upper portion of the memory map applies during boot 34 * only and is overwritten by IRIX/SYMMON. 35 * 36 * MEMORY MAP PER NODE 37 * 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) +-----------------------------------------+ 47 * | IP27 CFG | 48 * 0x1A00000 (26M) +-----------------------------------------+ 49 * | Graphics PROM | 50 * 0x1800000 (24M) +-----------------------------------------+ 51 * | 3rd Party PROM drivers | 52 * 0x1600000 (22M) +-----------------------------------------+ 53 * | | 54 * | Free | 55 * | | 56 * +-----------------------------------------+ 57 * | UNIX DEBUG Version | 58 * 0x190000 (2M--) +-----------------------------------------+ 59 * | SYMMON | 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) | 66 * | | 67 * | ---------------------------- | 68 * | | 69 * | UNIX NON-DEBUG Version | 70 * 0x19000 (100K) +-----------------------------------------+ 71 * 72 * 73 * The lower portion of the memory map contains information that is 74 * permanent and is used by the IP27PROM, IO6PROM and IRIX. 75 * 76 * 0x19000 (100K) +-----------------------------------------+ 77 * | | 78 * | PI Error Spools (32K) | 79 * | | 80 * 0x12000 (72K) +-----------------------------------------+ 81 * | Unused | 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) +-----------------------------------------+ 91 * | GDA (1k) | 92 * 0x11000 (68K) +-----------------------------------------+ 93 * | Early cache Exception stack | 94 * | and/or | 95 * | kernel/io6prom nmi registers | 96 * 0x10800 (66k) +-----------------------------------------+ 97 * | cache error eframe | 98 * 0x10400 (65K) +-----------------------------------------+ 99 * | Exception Handlers (UALIAS copy) | 100 * 0x10000 (64K) +-----------------------------------------+ 101 * | | 102 * | | 103 * | KLCONFIG - I (permanent) (48K) | 104 * | | 105 * | | 106 * | | 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) +-----------------------------------------+ 118 * | ARCS SPB (1K) | 119 * 0x1000 (4K) +-----------------------------------------+ 120 * | Early cache Exception stack | 121 * | and/or | 122 * | kernel/io6prom nmi registers | 123 * 0x800 (2k) +-----------------------------------------+ 124 * | cache error eframe | 125 * 0x400 (1K) +-----------------------------------------+ 126 * | Exception Handlers | 127 * 0x0 (0K) +-----------------------------------------+ 128 */ 129 130#ifdef __ASSEMBLY__ 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__ */ 138 139#if !defined(CONFIG_SGI_IO) 140 141/* 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. 147 */ 148#define SYMMON_STACK_SIZE 0x8000 149 150#if defined(PROM) || defined(SABLE) 151 152/* 153 * These defines are prom version dependent. No code other than the IP27 154 * prom should attempt to use these values. 155 */ 156#define IP27_LAUNCH_OFFSET 0x2400 157#define IP27_LAUNCH_SIZE 0x400 158#define IP27_LAUNCH_COUNT 2 159#define IP27_LAUNCH_STRIDE 0x200 160 161#define IP27_KLCONFIG_OFFSET 0x4000 162#define IP27_KLCONFIG_SIZE 0xc000 163#define IP27_KLCONFIG_COUNT 1 164#define IP27_KLCONFIG_STRIDE 0 165 166#define IP27_NMI_OFFSET 0x3000 167#define IP27_NMI_SIZE 0x40 168#define IP27_NMI_COUNT 2 169#define IP27_NMI_STRIDE 0x40 170 171#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 0 175 176#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 181 182#define IP27_FREEMEM_OFFSET 0x19000 183#define IP27_FREEMEM_SIZE -1 184#define IP27_FREEMEM_COUNT 1 185#define IP27_FREEMEM_STRIDE 0 186 187#endif /* PROM || SABLE*/ 188/* 189 * There will be only one of these in a partition so the IO6 must set it up. 190 */ 191#define IO6_GDA_OFFSET 0x11000 192#define IO6_GDA_SIZE 0x400 193#define IO6_GDA_COUNT 1 194#define IO6_GDA_STRIDE 0 195 196/* 197 * save area of kernel nmi regs in the prom format 198 */ 199#define IP27_NMI_KREGS_OFFSET 0x11400 200#define IP27_NMI_KREGS_CPU_SIZE 0x200 201/* 202 * save area of kernel nmi regs in eframe format 203 */ 204#define IP27_NMI_EFRAME_OFFSET 0x11800 205#define IP27_NMI_EFRAME_SIZE 0x200 206 207#define KLDIR_ENT_SIZE 0x40 208#define KLDIR_MAX_ENTRIES (0x400 / 0x40) 209 210#endif /* !CONFIG_SGI_IO */ 211 212#ifndef __ASSEMBLY__ 213typedef 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) 217 __psunsigned_t pointer; /* Pointer to area in some cases */ 218#else 219 unsigned long pointer; /* Pointer to area in some cases */ 220#endif 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. */ 227} kldir_ent_t; 228#endif /* !__ASSEMBLY__ */ 229 230#if defined(CONFIG_SGI_IO) 231 232#define KLDIR_ENT_SIZE 0x40 233#define KLDIR_MAX_ENTRIES (0x400 / 0x40) 234 235/* 236 * The actual offsets of each memory area are machine-dependent 237 */ 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> 242#else 243#error "kldir.h is currently defined for IP27 and IP35 platforms only" 244#endif 245 246#endif /* CONFIG_SGI_IO */ 247 248#endif /* _ASM_SN_KLDIR_H */ 249