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77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/*
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* PROJECT: ReactOS Boot Loader
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* LICENSE: BSD - See COPYING.ARM in the top level directory
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* FILE: boot/armllb/hw/versatile/hwclcd.c
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* PURPOSE: LLB CLCD Routines for Versatile
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* PROGRAMMERS: ReactOS Portable Systems Group
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*/
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#include "precomp.h"
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#define LCDTIMING0_PPL(x) ((((x) / 16 - 1) & 0x3f) << 2)
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#define LCDTIMING1_LPP(x) (((x) & 0x3ff) - 1)
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#define LCDCONTROL_LCDPWR (1 << 11)
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#define LCDCONTROL_LCDEN (1)
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#define LCDCONTROL_LCDBPP(x) (((x) & 7) << 1)
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#define LCDCONTROL_LCDTFT (1 << 5)
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#define PL110_LCDTIMING0 (PVOID)0x10120000
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#define PL110_LCDTIMING1 (PVOID)0x10120004
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#define PL110_LCDTIMING2 (PVOID)0x10120008
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#define PL110_LCDUPBASE (PVOID)0x10120010
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#define PL110_LCDLPBASE (PVOID)0x10120014
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#define PL110_LCDCONTROL (PVOID)0x10120018
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PUSHORT LlbHwVideoBuffer;
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VOID
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NTAPI
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LlbHwVersaClcdInitialize(VOID)
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{
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/* Set framebuffer address */
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WRITE_REGISTER_ULONG(PL110_LCDUPBASE, (ULONG)LlbHwGetFrameBuffer());
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WRITE_REGISTER_ULONG(PL110_LCDLPBASE, (ULONG)LlbHwGetFrameBuffer());
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/* Initialize timings to 720x400 */
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WRITE_REGISTER_ULONG(PL110_LCDTIMING0, LCDTIMING0_PPL(LlbHwGetScreenWidth()));
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WRITE_REGISTER_ULONG(PL110_LCDTIMING1, LCDTIMING1_LPP(LlbHwGetScreenHeight()));
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/* Enable the TFT/LCD Display */
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WRITE_REGISTER_ULONG(PL110_LCDCONTROL,
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LCDCONTROL_LCDEN |
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LCDCONTROL_LCDTFT |
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LCDCONTROL_LCDPWR |
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LCDCONTROL_LCDBPP(4));
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}
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ULONG
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NTAPI
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LlbHwGetScreenWidth(VOID)
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{
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return 720;
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}
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ULONG
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NTAPI
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LlbHwGetScreenHeight(VOID)
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{
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return 400;
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}
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PVOID
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NTAPI
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LlbHwGetFrameBuffer(VOID)
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{
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return (PVOID)0x000A0000;
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}
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ULONG
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NTAPI
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LlbHwVideoCreateColor(IN ULONG Red,
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IN ULONG Green,
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IN ULONG Blue)
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{
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return (((Blue >> 3) << 11)| ((Green >> 2) << 5)| ((Red >> 3) << 0));
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}
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/* EOF */
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