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2df8b7381b
not select the partition to boot from but to boot from the first bootable partition. "PowerPC Microprocessor Common Hardware Reference Platform (CHRP) System binding to: IEEE Std 1275-1994 Standard for Boot (Initialization, Configuration) Firmware Revision: 1.8" "Chapter 11.1.2. Open Method Algorith" "[...] If the partition component is present, it selects the desired partition, where partition 0 refers to the entire disk, partition 1 refers to the first partition, partition 2 to the second, and so forth. If the partition component is absent and the disk has an FDISK or Mac partition, the first "bootable" partition is used. [...]" git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@542 f158a5a8-5612-0410-a976-696ce0be7e32
89 lines
2.5 KiB
C
89 lines
2.5 KiB
C
/*
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* Creation Date: <1999/07/06 15:45:12 samuel>
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* Time-stamp: <2002/10/20 16:31:48 samuel>
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*
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* <partition_table.h>
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*
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* Headers describing the partition table
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*
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* Copyright (C) 1999, 2002 Samuel Rydh (samuel@ibrium.se)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation
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*
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*/
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#ifndef _H_PARTITION_TABLE
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#define _H_PARTITION_TABLE
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/* This information is based upon IM vol V. */
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#define DESC_MAP_SIGNATURE 0x4552
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#define DESC_PART_SIGNATURE 0x504d
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enum {
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kPartitionAUXIsValid = 0x00000001,
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kPartitionAUXIsAllocated = 0x00000002,
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kPartitionAUXIsInUse = 0x00000004,
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kPartitionAUXIsBootValid = 0x00000008,
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kPartitionAUXIsReadable = 0x00000010,
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kPartitionAUXIsWriteable = 0x00000020,
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kPartitionAUXIsBootCodePositionIndependent = 0x00000040,
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kPartitionISMountedAtStartup = 0x40000000,
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kPartitionIsStartup = 0x80000000,
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kPartitionIsChainCompatible = 0x00000100,
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kPartitionIsRealDeviceDriver = 0x00000200,
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kPartitionCanChainToNext = 0x00000400,
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};
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typedef struct {
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long ddBlock; /* first block of driver */
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short ddSize; /* driver size in blocks */
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short ddType; /* 1 & -1 for SCSI */
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} driver_entry_t;
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typedef struct { /* Block 0 of a device */
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short sbSig; /* always 0x4552 */
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short sbBlockSize; /* 512 */
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long sbBlkCount; /* #blocks on device */
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short sbDevType; /* 0 */
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short sbDevID; /* 0 */
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long sbData; /* 0 */
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short sbDrvrCount; /* #driver descriptors */
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/* driver entries goes here */
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driver_entry_t drivers[61] __attribute__ ((packed));
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short filler1;
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long filler2;
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} desc_map_t;
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typedef struct { /* Partition descriptor */
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short pmSig; /* always 0x504d 'PM' */
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short pmSigPad; /* 0 */
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ulong pmMapBlkCnt; /* #blocks in partition map */
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ulong pmPyPartStart; /* first physical block of part. */
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ulong pmPartBlkCnt; /* #blocks in partition */
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char pmPartName[32]; /* partition name */
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char pmPartType[32]; /* partition type */
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/* these fields may or may not be used */
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ulong pmLgDataStart;
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ulong pmDataCnt;
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ulong pmPartStatus;
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ulong pmLgBootStart;
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ulong pmBootSize;
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ulong pmBootLoad;
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ulong pmBootLoad2;
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ulong pmBootEntry;
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ulong pmBootEntry2;
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ulong pmBootCksum;
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char pmProcessor[16];
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char filler[376]; /* might contain extra information */
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} part_entry_t;
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#endif /* _H_PARTITION_TABLE */
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