boot/armllb/hw/versatile/hwclcd.c

   1 /*
   2  * PROJECT:         ReactOS Boot Loader
   3  * LICENSE:         BSD - See COPYING.ARM in the top level directory
   4  * FILE:            boot/armllb/hw/versatile/hwclcd.c
   5  * PURPOSE:         LLB CLCD Routines for Versatile
   6  * PROGRAMMERS:     ReactOS Portable Systems Group
   7  */
   8
   9 #include "precomp.h"
  10
  11 #define LCDTIMING0_PPL(x)               ((((x) / 16 - 1) & 0x3f) << 2)
  12 #define LCDTIMING1_LPP(x)               (((x) & 0x3ff) - 1)
  13 #define LCDCONTROL_LCDPWR               (1 << 11)
  14 #define LCDCONTROL_LCDEN                (1)
  15 #define LCDCONTROL_LCDBPP(x)    (((x) & 7) << 1)
  16 #define LCDCONTROL_LCDTFT               (1 << 5)
  17
  18 #define PL110_LCDTIMING0        (PVOID)0x10120000
  19 #define PL110_LCDTIMING1        (PVOID)0x10120004
  20 #define PL110_LCDTIMING2        (PVOID)0x10120008
  21 #define PL110_LCDUPBASE         (PVOID)0x10120010
  22 #define PL110_LCDLPBASE         (PVOID)0x10120014
  23 #define PL110_LCDCONTROL        (PVOID)0x10120018
  24
  25 PUSHORT LlbHwVideoBuffer;
  26
  27 VOID
  28 NTAPI
  29 LlbHwVersaClcdInitialize(VOID)
  30 {
  31     /* Set framebuffer address */
  32     WRITE_REGISTER_ULONG(PL110_LCDUPBASE, (ULONG)LlbHwGetFrameBuffer());
  33     WRITE_REGISTER_ULONG(PL110_LCDLPBASE, (ULONG)LlbHwGetFrameBuffer());
  34
  35     /* Initialize timings to 720x400 */
  36         WRITE_REGISTER_ULONG(PL110_LCDTIMING0, LCDTIMING0_PPL(LlbHwGetScreenWidth()));
  37         WRITE_REGISTER_ULONG(PL110_LCDTIMING1, LCDTIMING1_LPP(LlbHwGetScreenHeight()));
  38
  39     /* Enable the TFT/LCD Display */
  40         WRITE_REGISTER_ULONG(PL110_LCDCONTROL,
  41                          LCDCONTROL_LCDEN |
  42                          LCDCONTROL_LCDTFT |
  43                          LCDCONTROL_LCDPWR |
  44                          LCDCONTROL_LCDBPP(4));
  45 }
  46
  47 ULONG
  48 NTAPI
  49 LlbHwGetScreenWidth(VOID)
  50 {
  51     return 720;
  52 }
  53
  54 ULONG
  55 NTAPI
  56 LlbHwGetScreenHeight(VOID)
  57 {
  58     return 400;
  59 }
  60
  61 PVOID
  62 NTAPI
  63 LlbHwGetFrameBuffer(VOID)
  64 {
  65     return (PVOID)0x000A0000;
  66 }
  67
  68 ULONG
  69 NTAPI
  70 LlbHwVideoCreateColor(IN ULONG Red,
  71                       IN ULONG Green,
  72                       IN ULONG Blue)
  73 {
  74     return (((Blue >> 3) << 11)| ((Green >> 2) << 5)| ((Red >> 3) << 0));
  75 }
  76
  77 /* EOF */