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Removed unused bios32 support.

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svn path=/trunk/; revision=4603
This commit is contained in:
Eric Kohl 2003-04-27 18:12:15 +00:00
parent 392883e81f
commit 3f270ca3d4
2 changed files with 1 additions and 146 deletions
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3
reactos/hal/halx86/Makefile
View file

@ -1,4 +1,4 @@
# $Id: Makefile,v 1.8 2003/04/05 09:37:44 chorns Exp $
# $Id: Makefile,v 1.9 2003/04/27 18:12:15 ekohl Exp $
PATH_TO_TOP = ../..
@ -42,7 +42,6 @@ endif
HAL_OBJECTS = \
adapter.o \
beep.o \
bios32.o \
bus.o \
display.o \
dma.o \

144
reactos/hal/halx86/bios32.c
View file

@ -1,144 +0,0 @@
/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/hal/pci
* PURPOSE: Interfaces to BIOS32 interface
* PROGRAMMER: David Welch (welch@mcmail.com)
* UPDATE HISTORY:
* 05/06/98: Created
*/
/*
* NOTES: Sections copied from the Linux pci support
*/
/* INCLUDES ***************************************************************/
#include <ddk/ntddk.h>
#include <internal/mm.h>
#include <internal/i386/segment.h>
/* TYPES ******************************************************************/
typedef struct
{
/*
* "_32_" if present
*/
unsigned int signature;
/*
* Entry point (physical address)
*/
unsigned long int entry;
/*
* Revision level
*/
unsigned char revision;
/*
* Length in paragraphs
*/
unsigned char length;
/*
* Checksum (so all bytes add up to zero)
*/
unsigned char checksum;
unsigned char reserved[5];
} bios32;
BOOLEAN bios32_detected = FALSE;
static struct
{
unsigned long address;
unsigned short segment;
} bios32_indirect = {0,KERNEL_CS};
/* FUNCTIONS **************************************************************/
#define BIOS32_SIGNATURE (('_' << 0)+('3'<<8)+('2'<<16)+('_'<<24))
#if 0
BOOL static checksum(bios32* service_entry)
/*
* FUNCTION: Checks the checksum of a bios32 service entry
* ARGUMENTS:
* service_entry = Pointer to the service entry
* RETURNS: True if the sum of the bytes in the entry was zero
* False otherwise
*/
{
unsigned char* p = (unsigned char *)service_entry;
int i;
unsigned char sum=0;
for (i=0; i<(service_entry->length*16); i++)
{
sum=sum+p[i];
}
// DbgPrint("sum = %d\n",sum);
if (sum==0)
{
return(TRUE);
}
return(FALSE);
}
#endif
BOOLEAN Hal_bios32_is_service_present(ULONG service)
{
unsigned char return_code;
unsigned int address;
unsigned int length;
unsigned int entry;
__asm__("lcall *(%%edi)"
: "=a" (return_code),
"=b" (address),
"=c" (length),
"=d" (entry)
: "0" (service),
"1" (0),
"D" (&bios32_indirect));
if (return_code==0)
{
return(address+entry);
}
return(0);
}
VOID Hal_bios32_probe()
/*
* FUNCTION: Probes for an BIOS32 extension
* RETURNS: True if detected
*/
{
DbgPrint ("Hal_bios32_probe()\n");
return;
#if 0
int i;
for (i=0xe0000;i<=0xffff0;i++)
{
bios32* service_entry = (bios32 *)physical_to_linear(i);
if ( service_entry->signature != BIOS32_SIGNATURE )
{
continue;
}
DbgPrint("Signature detected at %x\n",i);
if (!checksum(service_entry))
{
continue;
}
DbgPrint("ReactOS: BIOS32 detected at %x\n",i);
bios32_indirect.address = service_entry->entry;
bios32_detected=TRUE;
}
#endif
}