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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_C
typedef 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 */
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