boot/freeldr/freeldr/disk/disk.c

   1 /*
   2  *  FreeLoader
   3  *  Copyright (C) 1998-2003  Brian Palmer  <brianp@sginet.com>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #ifndef _M_ARM
  21 #include <freeldr.h>
  22
  23 #include <debug.h>
  24
  25 DBG_DEFAULT_CHANNEL(DISK);
  26
  27 CHAR FrldrBootPath[MAX_PATH] = "";
  28
  29 static BOOLEAN bReportError = TRUE;
  30
  31 /* FUNCTIONS *****************************************************************/
  32
  33 VOID DiskReportError(BOOLEAN bError)
  34 {
  35     bReportError = bError;
  36 }
  37
  38 VOID DiskError(PCSTR ErrorString, ULONG ErrorCode)
  39 {
  40     CHAR ErrorCodeString[200];
  41
  42     if (bReportError == FALSE)
  43         return;
  44
  45     sprintf(ErrorCodeString, "%s\n\nError Code: 0x%lx\nError: %s",
  46             ErrorString, ErrorCode, DiskGetErrorCodeString(ErrorCode));
  47
  48     TRACE("%s\n", ErrorCodeString);
  49
  50     UiMessageBox(ErrorCodeString);
  51 }
  52
  53 PCSTR DiskGetErrorCodeString(ULONG ErrorCode)
  54 {
  55     switch (ErrorCode)
  56     {
  57     case 0x00:  return "no error";
  58     case 0x01:  return "bad command passed to driver";
  59     case 0x02:  return "address mark not found or bad sector";
  60     case 0x03:  return "diskette write protect error";
  61     case 0x04:  return "sector not found";
  62     case 0x05:  return "fixed disk reset failed";
  63     case 0x06:  return "diskette changed or removed";
  64     case 0x07:  return "bad fixed disk parameter table";
  65     case 0x08:  return "DMA overrun";
  66     case 0x09:  return "DMA access across 64k boundary";
  67     case 0x0A:  return "bad fixed disk sector flag";
  68     case 0x0B:  return "bad fixed disk cylinder";
  69     case 0x0C:  return "unsupported track/invalid media";
  70     case 0x0D:  return "invalid number of sectors on fixed disk format";
  71     case 0x0E:  return "fixed disk controlled data address mark detected";
  72     case 0x0F:  return "fixed disk DMA arbitration level out of range";
  73     case 0x10:  return "ECC/CRC error on disk read";
  74     case 0x11:  return "recoverable fixed disk data error, data fixed by ECC";
  75     case 0x20:  return "controller error (NEC for floppies)";
  76     case 0x40:  return "seek failure";
  77     case 0x80:  return "time out, drive not ready";
  78     case 0xAA:  return "fixed disk drive not ready";
  79     case 0xBB:  return "fixed disk undefined error";
  80     case 0xCC:  return "fixed disk write fault on selected drive";
  81     case 0xE0:  return "fixed disk status error/Error reg = 0";
  82     case 0xFF:  return "sense operation failed";
  83
  84     default:  return "unknown error code";
  85     }
  86 }
  87
  88 BOOLEAN DiskIsDriveRemovable(UCHAR DriveNumber)
  89 {
  90     /*
  91      * Hard disks use drive numbers >= 0x80 . So if the drive number
  92      * indicates a hard disk then return FALSE.
  93      * 0x49 is our magic ramdisk drive, so return FALSE for that too.
  94      */
  95     if ((DriveNumber >= 0x80) || (DriveNumber == 0x49))
  96         return FALSE;
  97
  98     /* The drive is a floppy diskette so return TRUE */
  99     return TRUE;
 100 }
 101
 102 BOOLEAN DiskGetBootPath(OUT PCHAR BootPath, IN ULONG Size)
 103 {
 104     if (*FrldrBootPath)
 105         goto Done;
 106
 107     if (Size)
 108         BootPath[0] = ANSI_NULL;
 109
 110     /* 0x49 is our magic ramdisk drive, so try to detect it first */
 111     if (FrldrBootDrive == 0x49)
 112     {
 113         /* This is the ramdisk. See ArmDiskGetBootPath too... */
 114         // sprintf(FrldrBootPath, "ramdisk(%u)", 0);
 115         strcpy(FrldrBootPath, "ramdisk(0)");
 116     }
 117     else if (FrldrBootDrive < 0x80)
 118     {
 119         /* This is a floppy */
 120         sprintf(FrldrBootPath, "multi(0)disk(0)fdisk(%u)", FrldrBootDrive);
 121     }
 122     else if (FrldrBootPartition == 0xFF)
 123     {
 124         /* Boot Partition 0xFF is the magic value that indicates booting from CD-ROM (see isoboot.S) */
 125         sprintf(FrldrBootPath, "multi(0)disk(0)cdrom(%u)", FrldrBootDrive - 0x80);
 126     }
 127     else
 128     {
 129         ULONG BootPartition;
 130         PARTITION_TABLE_ENTRY PartitionEntry;
 131
 132         /* This is a hard disk */
 133         if (!DiskGetBootPartitionEntry(FrldrBootDrive, &PartitionEntry, &BootPartition))
 134         {
 135             ERR("Failed to get boot partition entry\n");
 136             return FALSE;
 137         }
 138
 139         FrldrBootPartition = BootPartition;
 140
 141         sprintf(FrldrBootPath, "multi(0)disk(0)rdisk(%u)partition(%lu)",
 142                 FrldrBootDrive - 0x80, FrldrBootPartition);
 143     }
 144
 145 Done:
 146     /* Copy back the buffer */
 147     if (Size < strlen(FrldrBootPath) + 1)
 148         return FALSE;
 149     strncpy(BootPath, FrldrBootPath, Size);
 150     return TRUE;
 151 }
 152
 153 #endif