* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#include "freeldr.h"
-#include "debug.h"
+#include <freeldr.h>
+
+#define NDEBUG
+#include <debug.h>
/////////////////////////////////////////////////////////////////////////////////////////////
// FUNCTIONS
/////////////////////////////////////////////////////////////////////////////////////////////
-#ifdef __i386__
-
-BOOL DiskResetController(ULONG DriveNumber)
+BOOLEAN DiskResetController(ULONG DriveNumber)
{
REGS RegsIn;
REGS RegsOut;
- DbgPrint((DPRINT_DISK, "DiskResetController(0x%x) DISK OPERATION FAILED -- RESETTING CONTROLLER\n", DriveNumber));
+ DPRINTM(DPRINT_DISK, "DiskResetController(0x%x) DISK OPERATION FAILED -- RESETTING CONTROLLER\n", DriveNumber);
// BIOS Int 13h, function 0 - Reset disk system
// AH = 00h
return INT386_SUCCESS(RegsOut);
}
-BOOL DiskInt13ExtensionsSupported(ULONG DriveNumber)
+BOOLEAN DiskInt13ExtensionsSupported(ULONG DriveNumber)
{
+ static ULONG LastDriveNumber = 0xffffffff;
+ static BOOLEAN LastSupported;
REGS RegsIn;
REGS RegsOut;
- DbgPrint((DPRINT_DISK, "DiskInt13ExtensionsSupported()\n"));
+ DPRINTM(DPRINT_DISK, "PcDiskInt13ExtensionsSupported()\n");
+
+ if (DriveNumber == LastDriveNumber)
+ {
+ DPRINTM(DPRINT_DISK, "Using cached value %s for drive 0x%x\n", LastSupported ? "TRUE" : "FALSE", DriveNumber);
+ return LastSupported;
+ }
+
+ // Some BIOSes report that extended disk access functions are not supported
+ // when booting from a CD (e.g. Phoenix BIOS v6.00PG and Insyde BIOS shipping
+ // with Intel Macs). Therefore we just return TRUE if we're booting from a CD -
+ // we can assume that all El Torito capable BIOSes support INT 13 extensions.
+ // We simply detect whether we're booting from CD by checking whether the drive
+ // number is >= 0x8A. It's 0x90 on the Insyde BIOS, and 0x9F on most other BIOSes.
+ if (DriveNumber >= 0x8A)
+ {
+ LastSupported = TRUE;
+ return TRUE;
+ }
+
+ LastDriveNumber = DriveNumber;
// IBM/MS INT 13 Extensions - INSTALLATION CHECK
// AH = 41h
if (!INT386_SUCCESS(RegsOut))
{
// CF set on error (extensions not supported)
+ LastSupported = FALSE;
return FALSE;
}
if (RegsOut.w.bx != 0xAA55)
{
// BX = AA55h if installed
+ LastSupported = FALSE;
return FALSE;
}
- // Note:
- // The original check is too strict because some BIOSes report that
- // extended disk access functions are not suported when booting
- // from a CD (e.g. Phoenix BIOS v6.00PG). Argh!
-#if 0
if (!(RegsOut.w.cx & 0x0001))
{
// CX = API subset support bitmap
// Bit 0, extended disk access functions (AH=42h-44h,47h,48h) supported
- return FALSE;
- }
-#endif
-
- // Use this relaxed check instead
- if (RegsOut.w.cx == 0x0000)
- {
- // CX = API subset support bitmap
+ DbgPrint("Suspicious API subset support bitmap 0x%x on device 0x%lx\n", RegsOut.w.cx, DriveNumber);
+ LastSupported = FALSE;
return FALSE;
}
+ LastSupported = TRUE;
return TRUE;
}
WRITE_PORT_UCHAR((PUCHAR)0x3F2, 0);
}
-BOOL DiskGetExtendedDriveParameters(ULONG DriveNumber, PVOID Buffer, USHORT BufferSize)
+BOOLEAN DiskGetExtendedDriveParameters(ULONG DriveNumber, PVOID Buffer, USHORT BufferSize)
{
REGS RegsIn;
REGS RegsOut;
PUSHORT Ptr = (PUSHORT)(BIOSCALLBUFFER);
- DbgPrint((DPRINT_DISK, "DiskGetExtendedDriveParameters()\n"));
+ DPRINTM(DPRINT_DISK, "DiskGetExtendedDriveParameters()\n");
+
+ if (!DiskInt13ExtensionsSupported(DriveNumber))
+ return FALSE;
// Initialize transfer buffer
*Ptr = BufferSize;
memcpy(Buffer, Ptr, BufferSize);
+#if DBG
+ DPRINTM(DPRINT_DISK, "size of buffer: %x\n", Ptr[0]);
+ DPRINTM(DPRINT_DISK, "information flags: %x\n", Ptr[1]);
+ DPRINTM(DPRINT_DISK, "number of physical cylinders on drive: %u\n", *(PULONG)&Ptr[2]);
+ DPRINTM(DPRINT_DISK, "number of physical heads on drive: %u\n", *(PULONG)&Ptr[4]);
+ DPRINTM(DPRINT_DISK, "number of physical sectors per track: %u\n", *(PULONG)&Ptr[6]);
+ DPRINTM(DPRINT_DISK, "total number of sectors on drive: %I64u\n", *(unsigned long long*)&Ptr[8]);
+ DPRINTM(DPRINT_DISK, "bytes per sector: %u\n", Ptr[12]);
+ if (Ptr[0] >= 0x1e)
+ {
+ DPRINTM(DPRINT_DISK, "EED configuration parameters: %x:%x\n", Ptr[13], Ptr[14]);
+ if (Ptr[13] != 0xffff && Ptr[14] != 0xffff)
+ {
+ PUCHAR SpecPtr = (PUCHAR)(ULONG_PTR)((Ptr[13] << 4) + Ptr[14]);
+ DPRINTM(DPRINT_DISK, "SpecPtr: %x\n", SpecPtr);
+ DPRINTM(DPRINT_DISK, "physical I/O port base address: %x\n", *(PUSHORT)&SpecPtr[0]);
+ DPRINTM(DPRINT_DISK, "disk-drive control port address: %x\n", *(PUSHORT)&SpecPtr[2]);
+ DPRINTM(DPRINT_DISK, "drive flags: %x\n", SpecPtr[4]);
+ DPRINTM(DPRINT_DISK, "proprietary information: %x\n", SpecPtr[5]);
+ DPRINTM(DPRINT_DISK, "IRQ for drive: %u\n", SpecPtr[6]);
+ DPRINTM(DPRINT_DISK, "sector count for multi-sector transfers: %u\n", SpecPtr[7]);
+ DPRINTM(DPRINT_DISK, "DMA control: %x\n", SpecPtr[8]);
+ DPRINTM(DPRINT_DISK, "programmed I/O control: %x\n", SpecPtr[9]);
+ DPRINTM(DPRINT_DISK, "drive options: %x\n", *(PUSHORT)&SpecPtr[10]);
+ }
+ }
+ if (Ptr[0] >= 0x42)
+ {
+ DPRINTM(DPRINT_DISK, "signature: %x\n", Ptr[15]);
+ }
+#endif
+
return TRUE;
}
-#endif // defined __i386__
+/* EOF */
projects / reactos.git / blobdiff