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