diff options
Diffstat (limited to 'cpu/amd/geode_lx/gplvsa_ii/lxvg/utils.asm')
| -rwxr-xr-x | cpu/amd/geode_lx/gplvsa_ii/lxvg/utils.asm | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/cpu/amd/geode_lx/gplvsa_ii/lxvg/utils.asm b/cpu/amd/geode_lx/gplvsa_ii/lxvg/utils.asm new file mode 100755 index 0000000..88579a0 --- /dev/null +++ b/cpu/amd/geode_lx/gplvsa_ii/lxvg/utils.asm @@ -0,0 +1,271 @@ +;/*
+;* Copyright (c) 2007-2008 Advanced Micro Devices,Inc. ("AMD").
+;*
+;* This library is free software; you can redistribute it and/or modify
+;* it under the terms of the GNU Lesser General Public License as
+;* published by the Free Software Foundation; either version 2.1 of the
+;* License, or (at your option) any later version.
+;*
+;* This code is distributed in the hope that it will be useful,
+;* but WITHOUT ANY WARRANTY; without even the implied warranty of
+;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;* Lesser General Public License for more details.
+;
+;* You should have received a copy of the GNU Lesser General
+;* Public License along with this library; if not, write to the
+;* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+;* Boston, MA 02111-1307 USA
+;*/
+
+
+.MODEL TINY,c
+.CODE
+.586p
+
+;----------------------------------------------------------------------------
+; BASE ADDRESSES
+; These global variables are used to access the memory mapped regions.
+; VSA II maintains a flat 4 Gig selector in FS.
+;----------------------------------------------------------------------------
+
+extrn framebuffer_base:dword
+extrn GPregister_base:dword
+extrn VGregister_base:dword
+extrn DFregister_base:dword
+extrn VIPregister_base:dword
+
+
+
+;----------------------------------------------------------------------------
+; READ_FB_32: Returns a 32-bit value from the frame buffer.
+;
+; Parameter specifies 32-bit offset.
+;----------------------------------------------------------------------------
+
+read_fb_32 proc c address: dword
+
+ mov ebx, [address]
+ add ebx, [framebuffer_base]
+ mov eax, fs:[ebx]
+ mov edx, eax
+ shr edx, 16
+ ret
+
+read_fb_32 endp
+
+;----------------------------------------------------------------------------
+; WRITE_FB_32: Writes a 32-bit value to the frame buffer.
+;
+; Parameters specify 32-bit offset and 32-bit data value.
+;----------------------------------------------------------------------------
+
+write_fb_32 proc c address: dword, data: dword
+
+ mov ebx, [address]
+ add ebx, [framebuffer_base]
+ mov eax, [data]
+ mov fs:[ebx], eax
+ ret
+
+write_fb_32 endp
+
+
+;----------------------------------------------------------------------------
+; READ_GP_32: Returns 32-bit value from the graphics processor register space.
+;
+; Parameter specifies 32-bit offset.
+;----------------------------------------------------------------------------
+
+read_gp_32 proc c address: dword
+
+ mov ebx, [address]
+ add ebx, [GPregister_base]
+ mov eax, fs:[ebx]
+ mov edx, eax
+ shr edx, 16
+ ret
+
+read_gp_32 endp
+
+;----------------------------------------------------------------------------
+; WRITE_GP_32: Writes 32-bit value to graphics processor register space.
+;
+; Parameters specify 32-bit offset and 32-bit data value.
+;----------------------------------------------------------------------------
+
+write_gp_32 proc c address: dword, data: dword
+
+ mov ebx, [address]
+ add ebx, [GPregister_base]
+ mov eax, [data]
+ mov fs:[ebx], eax
+ ret
+
+write_gp_32 endp
+
+
+;----------------------------------------------------------------------------
+; READ_VG_8: Returns 8-bit value from the video generator register space.
+;
+; Parameter specifies 32-bit offset.
+;----------------------------------------------------------------------------
+
+read_vg_8 proc c address: dword
+
+ mov ebx, [address]
+ add ebx, [VGregister_base]
+ mov al, fs:[ebx]
+ ret
+
+read_vg_8 endp
+
+;----------------------------------------------------------------------------
+; WRITE_VG_8: Writes 8-bit value to video generator register space.
+;
+; Parameters specify 32-bit offset and 8-bit data value.
+;----------------------------------------------------------------------------
+
+write_vg_8 proc c address: dword, data: byte
+
+ mov ebx, [address]
+ add ebx, [VGregister_base]
+ mov al, [data]
+ mov fs:[ebx], al
+ ret
+
+write_vg_8 endp
+
+
+;----------------------------------------------------------------------------
+; READ_VG_32: Returns 32-bit value from the video generator register space.
+;
+; Parameter specifies 32-bit offset.
+;----------------------------------------------------------------------------
+
+read_vg_32 proc c address: dword
+
+ mov ebx, [address]
+ add ebx, [VGregister_base]
+ mov eax, fs:[ebx]
+ mov edx, eax
+ shr edx, 16
+ ret
+
+read_vg_32 endp
+
+;----------------------------------------------------------------------------
+; WRITE_VG_32: Writes 32-bit value to video generator register space.
+;
+; Parameters specify 32-bit offset and 32-bit data value.
+;----------------------------------------------------------------------------
+
+write_vg_32 proc c address: dword, data: dword
+
+ mov ebx, [address]
+ add ebx, [VGregister_base]
+ mov eax, [data]
+ mov fs:[ebx], eax
+ ret
+
+write_vg_32 endp
+
+
+;----------------------------------------------------------------------------
+; READ_DF_32: Returns 32-bit value from the display filter register space.
+;
+; Parameter specifies 32-bit offset.
+;----------------------------------------------------------------------------
+
+read_df_32 proc c address: dword
+
+ mov ebx, [address]
+ add ebx, [DFregister_base]
+ mov eax, fs:[ebx]
+ mov edx, eax
+ shr edx, 16
+ ret
+
+read_df_32 endp
+
+;----------------------------------------------------------------------------
+; WRITE_DF_32: Writes 32-bit value to display filter register space.
+;
+; Parameters specify 32-bit offset and 32-bit data value.
+;----------------------------------------------------------------------------
+
+write_df_32 proc c address: dword, data: dword
+
+ mov ebx, [address]
+ add ebx, [DFregister_base]
+ mov eax, [data]
+ mov fs:[ebx], eax
+ ret
+
+write_df_32 endp
+
+
+;----------------------------------------------------------------------------
+; READ_VIP_32: Returns 32-bit value from the video input port register space.
+;
+; Parameter specifies 32-bit offset.
+;----------------------------------------------------------------------------
+
+read_vip_32 proc c address: dword
+
+ mov ebx, [address]
+ add ebx, [VIPregister_base]
+ mov eax, fs:[ebx]
+ mov edx, eax
+ shr edx, 16
+ ret
+
+read_vip_32 endp
+
+;----------------------------------------------------------------------------
+; WRITE_VIP_32: Writes 32-bit value to video input port register space.
+;
+; Parameters specify 32-bit offset and 32-bit data value.
+;----------------------------------------------------------------------------
+
+write_vip_32 proc c address: dword, data: dword
+
+ mov ebx, [address]
+ add ebx, [VIPregister_base]
+ mov eax, [data]
+ mov fs:[ebx], eax
+ ret
+
+write_vip_32 endp
+
+
+asmRead proc public uses bx eax ecx edx, msrReg:word, msrAddr:dword, ptrHigh:word, ptrLow:word
+ mov ecx, msrAddr
+ mov cx, msrReg
+ RDMSR
+
+ mov bx, ptrHigh
+ mov [bx], edx
+ mov bx, ptrLow
+ mov [bx], eax
+
+ ret
+
+asmRead endp
+
+
+asmWrite proc public uses bx eax ecx edx, msrReg:word, msrAddr:dword, ptrHigh:word, ptrLow:word
+
+ mov ecx, msrAddr
+ mov cx, msrReg
+
+ mov bx, ptrHigh
+ mov edx, [bx]
+ mov bx, ptrLow
+ mov eax, [bx]
+
+ WRMSR
+ ret
+
+asmWrite endp
+
+END
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