📄 kldir.h
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/* $Id$ * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Derived from IRIX <sys/SN/kldir.h>, revision 1.21. * * Copyright (C) 1992 - 1997, 1999 Silicon Graphics, Inc. * Copyright (C) 1999 by Ralf Baechle */#ifndef _ASM_SN_KLDIR_H#define _ASM_SN_KLDIR_H#include <linux/config.h>#include <asm/sn/sgi.h>/* * The kldir memory area resides at a fixed place in each node's memory and * provides pointers to most other IP27 memory areas. This allows us to * resize and/or relocate memory areas at a later time without breaking all * firmware and kernels that use them. Indices in the array are * permanently dedicated to areas listed below. Some memory areas (marked * below) reside at a permanently fixed location, but are included in the * directory for completeness. */#define KLDIR_MAGIC 0x434d5f53505f5357/* * The upper portion of the memory map applies during boot * only and is overwritten by IRIX/SYMMON. * * MEMORY MAP PER NODE * * 0x2000000 (32M) +-----------------------------------------+ * | IO6 BUFFERS FOR FLASH ENET IOC3 | * 0x1F80000 (31.5M) +-----------------------------------------+ * | IO6 TEXT/DATA/BSS/stack | * 0x1C00000 (30M) +-----------------------------------------+ * | IO6 PROM DEBUG TEXT/DATA/BSS/stack | * 0x0800000 (28M) +-----------------------------------------+ * | IP27 PROM TEXT/DATA/BSS/stack | * 0x1B00000 (27M) +-----------------------------------------+ * | IP27 CFG | * 0x1A00000 (26M) +-----------------------------------------+ * | Graphics PROM | * 0x1800000 (24M) +-----------------------------------------+ * | 3rd Party PROM drivers | * 0x1600000 (22M) +-----------------------------------------+ * | | * | Free | * | | * +-----------------------------------------+ * | UNIX DEBUG Version | * 0x190000 (2M--) +-----------------------------------------+ * | SYMMON | * | (For UNIX Debug only) | * 0x34000 (208K) +-----------------------------------------+ * | SYMMON STACK [NUM_CPU_PER_NODE] | * | (For UNIX Debug only) | * 0x25000 (148K) +-----------------------------------------+ * | KLCONFIG - II (temp) | * | | * | ---------------------------- | * | | * | UNIX NON-DEBUG Version | * 0x19000 (100K) +-----------------------------------------+ * * * The lower portion of the memory map contains information that is * permanent and is used by the IP27PROM, IO6PROM and IRIX. * * 0x19000 (100K) +-----------------------------------------+ * | | * | PI Error Spools (32K) | * | | * 0x12000 (72K) +-----------------------------------------+ * | Unused | * 0x11c00 (71K) +-----------------------------------------+ * | CPU 1 NMI Eframe area | * 0x11a00 (70.5K) +-----------------------------------------+ * | CPU 0 NMI Eframe area | * 0x11800 (70K) +-----------------------------------------+ * | CPU 1 NMI Register save area | * 0x11600 (69.5K) +-----------------------------------------+ * | CPU 0 NMI Register save area | * 0x11400 (69K) +-----------------------------------------+ * | GDA (1k) | * 0x11000 (68K) +-----------------------------------------+ * | Early cache Exception stack | * | and/or | * | kernel/io6prom nmi registers | * 0x10800 (66k) +-----------------------------------------+ * | cache error eframe | * 0x10400 (65K) +-----------------------------------------+ * | Exception Handlers (UALIAS copy) | * 0x10000 (64K) +-----------------------------------------+ * | | * | | * | KLCONFIG - I (permanent) (48K) | * | | * | | * | | * 0x4000 (16K) +-----------------------------------------+ * | NMI Handler (Protected Page) | * 0x3000 (12K) +-----------------------------------------+ * | ARCS PVECTORS (master node only) | * 0x2c00 (11K) +-----------------------------------------+ * | ARCS TVECTORS (master node only) | * 0x2800 (10K) +-----------------------------------------+ * | LAUNCH [NUM_CPU] | * 0x2400 (9K) +-----------------------------------------+ * | Low memory directory (KLDIR) | * 0x2000 (8K) +-----------------------------------------+ * | ARCS SPB (1K) | * 0x1000 (4K) +-----------------------------------------+ * | Early cache Exception stack | * | and/or | * | kernel/io6prom nmi registers | * 0x800 (2k) +-----------------------------------------+ * | cache error eframe | * 0x400 (1K) +-----------------------------------------+ * | Exception Handlers | * 0x0 (0K) +-----------------------------------------+ */#ifdef LANGUAGE_ASSEMBLY#define KLDIR_OFF_MAGIC 0x00#define KLDIR_OFF_OFFSET 0x08#define KLDIR_OFF_POINTER 0x10#define KLDIR_OFF_SIZE 0x18#define KLDIR_OFF_COUNT 0x20#define KLDIR_OFF_STRIDE 0x28#endif /* LANGUAGE_ASSEMBLY */#ifdef _LANGUAGE_Ctypedef struct kldir_ent_s { u64 magic; /* Indicates validity of entry */ off_t offset; /* Offset from start of node space */ __psunsigned_t pointer; /* Pointer to area in some cases */ size_t size; /* Size in bytes */ u64 count; /* Repeat count if array, 1 if not */ size_t stride; /* Stride if array, 0 if not */ char rsvd[16]; /* Pad entry to 0x40 bytes */ /* NOTE: These 16 bytes are used in the Partition KLDIR entry to store partition info. Refer to klpart.h for this. */} kldir_ent_t;#endif /* _LANGUAGE_C */#define KLDIR_ENT_SIZE 0x40#define KLDIR_MAX_ENTRIES (0x400 / 0x40)/* * The actual offsets of each memory area are machine-dependent */#if defined(CONFIG_SGI_IP35) || defined(CONFIG_IA64_SGI_SN1) || defined(CONFIG_IA64_GENERIC)#include <asm/sn/sn1/kldir.h>#else#error "kldir.h is currently defined for IP27 and IP35 platforms only"#endif#endif /* _ASM_SN_KLDIR_H */⌨️ 快捷键说明
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