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- Map only the vga frame buffer for the hal to write debug messages

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and map it higher up in the kernel address space so more space is available
for the nonpaged and paged pools.

svn path=/trunk/; revision=8769
This commit is contained in:
David Welch 2004-03-16 22:45:56 +00:00
parent d4bd6869fe
commit 3db0cc5595
4 changed files with 22 additions and 12 deletions
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7
reactos/hal/halx86/display.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: display.c,v 1.13 2004/01/18 22:35:26 gdalsnes Exp $
/* $Id: display.c,v 1.14 2004/03/16 22:45:55 dwelch Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -577,9 +577,8 @@ HalInitializeDisplay (PLOADER_PARAMETER_BLOCK LoaderBlock)
ULONG ScanLines;
ULONG Data;
VideoBuffer = (WORD *)(0xd0000000 + 0xb8000);
GraphVideoBuffer = (PUCHAR)(0xd0000000 + 0xa0000);
// VideoBuffer = HalMapPhysicalMemory (0xb8000, 2);
VideoBuffer = (WORD *)(0xff3b8000);
GraphVideoBuffer = (PUCHAR)(0xff3a0000);
/* Set cursor position */
// CursorX = LoaderBlock->cursorx;

4
reactos/ntoskrnl/kd/mda.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: mda.c,v 1.3 2002/09/08 10:23:27 chorns Exp $
/* $Id: mda.c,v 1.4 2004/03/16 22:45:56 dwelch Exp $
*
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/kd/mda.c
@ -77,7 +77,7 @@ KdInitializeMda(VOID)
MdaStatusPort = 0x3ba;
MdaGfxPort = 0x3bf;
VideoBuffer = (PUSHORT)(0xd0000000 + 0xb0000);
VideoBuffer = (PUSHORT)(0xff3b0000);
MdaCursorX = MdaCursorY = 0;
}

13
reactos/ntoskrnl/ke/i386/multiboot.S
View file

@ -139,7 +139,6 @@ _multiboot_entry:
movl $(V2P(kernel_pagetable+30*4096) + 0x7), 0xC78(%esi)
movl $(V2P(kernel_pagetable+31*4096) + 0x7), 0xC7c(%esi)
movl $(V2P(lowmem_pagetable) + 0x7), 0xD00(%esi)
movl $(V2P(startup_pagedirectory) + 0x7), 0xF00(%esi)
#ifdef MP
movl $(V2P(apic_pagetable) + 0x7), 0xFEC(%esi)
@ -200,6 +199,18 @@ _multiboot_entry:
movl $0x1007, %eax
movl %eax, (%esi, %edi)
/*
* Initialize a part of the same pagetable to map the vga frame buffer.
*/
movl $0xa0007, %eax
movl $0x20, %ecx
movl $0xE80, %edi
.l9:
movl %eax, (%esi, %edi)
add $4, %edi
add $0x1000, %eax
loop .l9
#ifdef MP
.m1:

10
reactos/ntoskrnl/mm/mminit.c
View file

@ -1,4 +1,4 @@
/* $Id: mminit.c,v 1.61 2004/03/16 21:13:15 dwelch Exp $
/* $Id: mminit.c,v 1.62 2004/03/16 22:45:56 dwelch Exp $
*
* COPYRIGHT: See COPYING in the top directory
* PROJECT: ReactOS kernel
@ -48,7 +48,7 @@ static MEMORY_AREA* kernel_data_desc = NULL;
static MEMORY_AREA* kernel_param_desc = NULL;
static MEMORY_AREA* kernel_pool_desc = NULL;
static MEMORY_AREA* kernel_shared_data_desc = NULL;
static MEMORY_AREA* kernel_mapped_low_mem_desc = NULL;
static MEMORY_AREA* kernel_mapped_vga_framebuffer_desc = NULL;
static MEMORY_AREA* MiKernelMapDescriptor = NULL;
static MEMORY_AREA* MiPagedPoolDescriptor = NULL;
@ -146,14 +146,14 @@ MmInitVirtualMemory(ULONG LastKernelAddress,
FALSE,
BoundaryAddressMultiple);
BaseAddress = (PVOID)0xd0000000;
BaseAddress = (PVOID)0xFF3A0000;
MmCreateMemoryArea(NULL,
MmGetKernelAddressSpace(),
MEMORY_AREA_SYSTEM,
&BaseAddress,
0x100000,
0x20000,
0,
&kernel_mapped_low_mem_desc,
&kernel_mapped_vga_framebuffer_desc,
FALSE,
FALSE,
BoundaryAddressMultiple);