117 lines
4.4 KiB
C
117 lines
4.4 KiB
C
#include <Uefi.h>
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#include <Protocol/GraphicsOutput.h>
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#include <Library/UefiLib.h>
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#include <Library/TimerLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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EFI_GUID gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
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EFI_GRAPHICS_OUTPUT_PROTOCOL *Gop = NULL;
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UINT64 Gop_FrameBufferBase = 0;
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UINT32 Gop_PixelsPerScanLine = 0;
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static inline void drawPixel(UINT32 x, UINT32 y, UINT32 pixel)
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{
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*((UINT32*)(Gop_FrameBufferBase + 4 * Gop_PixelsPerScanLine * y + 4 * x)) = pixel;
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}
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static inline void drawRectangle(UINT32 x, UINT32 y, UINT32 w, UINT32 h, UINT32 pixel)
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{
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for(int ix = 0; ix < w; ++ix)
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{
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for(int iy = 0; iy < w; ++iy)
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{
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drawPixel(x+ix, y+iy, pixel);
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}
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}
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}
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EFI_STATUS EFIAPI UefiEntry(IN EFI_HANDLE imgHandle, IN EFI_SYSTEM_TABLE* sysTable)
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{
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gST = sysTable;
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gBS = sysTable->BootServices;
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gImageHandle = imgHandle;
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gBS->SetWatchdogTimer(0, 0, 0, NULL);
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EFI_STATUS status = 0;
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/**
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* GOP Setup
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*/
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status = gBS->LocateProtocol(&gop_guid, NULL, (VOID **)&Gop);
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if (EFI_ERROR(status)) {
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Print(u"\r\nERROR: %x; Cannot locate GOP protocol. Return.\r\n", status);
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return status;
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}
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Gop_FrameBufferBase = Gop->Mode->FrameBufferBase;
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Gop_PixelsPerScanLine = Gop->Mode->Info->PixelsPerScanLine;
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UINT32 W = Gop->Mode->Info->HorizontalResolution;
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UINT32 H = Gop->Mode->Info->VerticalResolution;
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/**
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* Fills framebuffer
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*/
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drawRectangle(0,0,W,H,0x000000);
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UINT32 sq_sid = W * 50 / 1000;
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UINT32 sq_gap = W * 17 / 1000;
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/**
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* Computes squares coordinates
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*/
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UINT32 col0 = W/2 - 7*sq_gap/2 - 4*sq_sid;
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UINT32 col1 = W/2 - 5*sq_gap/2 - 3*sq_sid;
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UINT32 col2 = W/2 - sq_gap/2 - sq_sid;
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UINT32 col3 = W/2 + sq_gap/2 ;
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UINT32 col4 = W/2 + 5*sq_gap/2 + 2*sq_sid;
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UINT32 col5 = W/2 + 7*sq_gap/2 + 3*sq_sid;
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UINT32 row0 = H/2 - 3*sq_sid/2 - sq_gap;
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UINT32 row1 = H/2 - sq_sid/2 ;
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UINT32 row2 = H/2 + sq_sid/2 + sq_gap;
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/**
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* Loops drawing the clockface
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*/
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EFI_TIME Time;
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UINT16 second, minute, hour;
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const UINT32 accentColor = 0xFFAB3F, idleColor = 0x555555;
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while(1)
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{
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gRT->GetTime(&Time, NULL);
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second = Time.Second;
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minute = Time.Minute;
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hour = Time.Hour;
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second & 0b000001 ? drawRectangle(col5,row2,sq_sid,sq_sid,accentColor) : drawRectangle(col5,row2,sq_sid,sq_sid,idleColor);
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second & 0b000010 ? drawRectangle(col5,row1,sq_sid,sq_sid,accentColor) : drawRectangle(col5,row1,sq_sid,sq_sid,idleColor);
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second & 0b000100 ? drawRectangle(col5,row0,sq_sid,sq_sid,accentColor) : drawRectangle(col5,row0,sq_sid,sq_sid,idleColor);
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second & 0b001000 ? drawRectangle(col4,row2,sq_sid,sq_sid,accentColor) : drawRectangle(col4,row2,sq_sid,sq_sid,idleColor);
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second & 0b010000 ? drawRectangle(col4,row1,sq_sid,sq_sid,accentColor) : drawRectangle(col4,row1,sq_sid,sq_sid,idleColor);
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second & 0b100000 ? drawRectangle(col4,row0,sq_sid,sq_sid,accentColor) : drawRectangle(col4,row0,sq_sid,sq_sid,idleColor);
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minute & 0b000001 ? drawRectangle(col3,row2,sq_sid,sq_sid,accentColor) : drawRectangle(col3,row2,sq_sid,sq_sid,idleColor);
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minute & 0b000010 ? drawRectangle(col3,row1,sq_sid,sq_sid,accentColor) : drawRectangle(col3,row1,sq_sid,sq_sid,idleColor);
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minute & 0b000100 ? drawRectangle(col3,row0,sq_sid,sq_sid,accentColor) : drawRectangle(col3,row0,sq_sid,sq_sid,idleColor);
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minute & 0b001000 ? drawRectangle(col2,row2,sq_sid,sq_sid,accentColor) : drawRectangle(col2,row2,sq_sid,sq_sid,idleColor);
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minute & 0b010000 ? drawRectangle(col2,row1,sq_sid,sq_sid,accentColor) : drawRectangle(col2,row1,sq_sid,sq_sid,idleColor);
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minute & 0b100000 ? drawRectangle(col2,row0,sq_sid,sq_sid,accentColor) : drawRectangle(col2,row0,sq_sid,sq_sid,idleColor);
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hour & 0b00001 ? drawRectangle(col1,row2,sq_sid,sq_sid,accentColor) : drawRectangle(col1,row2,sq_sid,sq_sid,idleColor);
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hour & 0b00010 ? drawRectangle(col1,row1,sq_sid,sq_sid,accentColor) : drawRectangle(col1,row1,sq_sid,sq_sid,idleColor);
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hour & 0b00100 ? drawRectangle(col1,row0,sq_sid,sq_sid,accentColor) : drawRectangle(col1,row0,sq_sid,sq_sid,idleColor);
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hour & 0b01000 ? drawRectangle(col0,row2,sq_sid,sq_sid,accentColor) : drawRectangle(col0,row2,sq_sid,sq_sid,idleColor);
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hour & 0b10000 ? drawRectangle(col0,row1,sq_sid,sq_sid,accentColor) : drawRectangle(col0,row1,sq_sid,sq_sid,idleColor);
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MicroSecondDelay(1e6);
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}
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return EFI_SUCCESS;
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}
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