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Added support for INT 13,15; NTLDR calls it (though it may not

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actually do anything with the result, since it carried on using us
even when we returned failure).
This commit is contained in:
Michael Brown 2006-08-26 23:42:02 +00:00
parent 19883779ba
commit 40724431e8
1 changed files with 20 additions and 1 deletions
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21
src/arch/i386/interface/pcbios/int13.c
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@ -207,6 +207,22 @@ static int int13_get_parameters ( struct int13_drive *drive,
return 0;
}
/**
* INT 13, 15 - Get disk type
*
* @v drive Emulated drive
* @ret ah Type code
* @ret cx:dx Sector count
* @ret status Status code / disk type
*/
static int int13_get_disk_type ( struct int13_drive *drive,
struct i386_all_regs *ix86 ) {
DBG ( "Get disk type\n" );
ix86->regs.cx = ( drive->cylinders >> 16 );
ix86->regs.dx = ( drive->cylinders & 0xffff );
return INT13_DISK_TYPE_HDD;
}
/**
* INT 13, 41 - Extensions installation check
*
@ -348,6 +364,9 @@ static void int13 ( struct i386_all_regs *ix86 ) {
case INT13_GET_PARAMETERS:
status = int13_get_parameters ( drive, ix86 );
break;
case INT13_GET_DISK_TYPE:
status = int13_get_disk_type ( drive, ix86 );
break;
case INT13_EXTENSION_CHECK:
status = int13_extension_check ( drive, ix86 );
break;
@ -361,7 +380,7 @@ static void int13 ( struct i386_all_regs *ix86 ) {
status = int13_get_extended_parameters ( drive, ix86 );
break;
default:
DBG ( "Unrecognised INT 13\n" );
DBG ( "*** Unrecognised INT 13 ***\n" );
status = -INT13_STATUS_INVALID;
break;
}