hwclcd.c

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