ReactOS Development > Doxygen

00001 /*
00002  * PROJECT:         ReactOS Boot Loader
00003  * LICENSE:         BSD - See COPYING.ARM in the top level directory
00004  * FILE:            boot/armllb/hw/versatile/hwclcd.c
00005  * PURPOSE:         LLB CLCD Routines for Versatile
00006  * PROGRAMMERS:     ReactOS Portable Systems Group
00007  */
00008 
00009 #include "precomp.h"
00010 
00011 #define LCDTIMING0_PPL(x)       ((((x) / 16 - 1) & 0x3f) << 2)
00012 #define LCDTIMING1_LPP(x)       (((x) & 0x3ff) - 1)
00013 #define LCDCONTROL_LCDPWR       (1 << 11)
00014 #define LCDCONTROL_LCDEN        (1)
00015 #define LCDCONTROL_LCDBPP(x)    (((x) & 7) << 1)
00016 #define LCDCONTROL_LCDTFT       (1 << 5)
00017 
00018 #define PL110_LCDTIMING0    (PVOID)0x10120000
00019 #define PL110_LCDTIMING1    (PVOID)0x10120004
00020 #define PL110_LCDTIMING2    (PVOID)0x10120008
00021 #define PL110_LCDUPBASE     (PVOID)0x10120010
00022 #define PL110_LCDLPBASE     (PVOID)0x10120014
00023 #define PL110_LCDCONTROL    (PVOID)0x10120018
00024 
00025 PUSHORT LlbHwVideoBuffer;
00026 
00027 VOID
00028 NTAPI
00029 LlbHwVersaClcdInitialize(VOID)
00030 {
00031     /* Set framebuffer address */
00032     WRITE_REGISTER_ULONG(PL110_LCDUPBASE, (ULONG)LlbHwGetFrameBuffer());
00033     WRITE_REGISTER_ULONG(PL110_LCDLPBASE, (ULONG)LlbHwGetFrameBuffer());
00034     
00035     /* Initialize timings to 720x400 */
00036     WRITE_REGISTER_ULONG(PL110_LCDTIMING0, LCDTIMING0_PPL(LlbHwGetScreenWidth()));
00037     WRITE_REGISTER_ULONG(PL110_LCDTIMING1, LCDTIMING1_LPP(LlbHwGetScreenHeight()));
00038     
00039     /* Enable the TFT/LCD Display */
00040     WRITE_REGISTER_ULONG(PL110_LCDCONTROL,
00041                          LCDCONTROL_LCDEN |
00042                          LCDCONTROL_LCDTFT |
00043                          LCDCONTROL_LCDPWR |
00044                          LCDCONTROL_LCDBPP(4));
00045 }
00046 
00047 ULONG
00048 NTAPI
00049 LlbHwGetScreenWidth(VOID)
00050 {
00051     return 720;
00052 }
00053  
00054 ULONG
00055 NTAPI
00056 LlbHwGetScreenHeight(VOID)
00057 {
00058     return 400;
00059 }
00060 
00061 PVOID
00062 NTAPI
00063 LlbHwGetFrameBuffer(VOID)
00064 {
00065     return (PVOID)0x000A0000;
00066 }
00067 
00068 ULONG
00069 NTAPI
00070 LlbHwVideoCreateColor(IN ULONG Red,
00071                       IN ULONG Green,
00072                       IN ULONG Blue)
00073 {
00074     return (((Blue >> 3) << 11)| ((Green >> 2) << 5)| ((Red >> 3) << 0));
00075 }
00076 
00077 /* EOF */
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