Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-12-27 01:24:38 +00:00
Code Issues Projects Releases Packages Wiki Activity

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

Browse source 
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
Show stats Download patch file Download diff file Expand all files Collapse all files

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);