フレームバッファ 割り込みの実装

main.c

@@ -0,0 +1,88 @@
+#include <Library/BaseMemoryLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PrintLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+/*
+#include <Pi/PiMultiPhase.h>
+#include <Protocol/MpService.h>
+*/
+
+#include <Uefi.h>
+#include <Uefi/UefiSpec.h>
+
+#include "fb.h"
+#include "gdt.h"
+#include "interrupt.h"
+#include "text.h"
+
+EFI_STATUS EFIAPI UefiMain(IN EFI_HANDLE ImageHandle,
+                           IN EFI_SYSTEM_TABLE *SystemTable) {
+    EFI_STATUS Status;
+    EFI_GRAPHICS_OUTPUT_PROTOCOL *gop;
+    EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *fsp;
+    // EFI_MP_SERVICES_PROTOCOL *mps;
+
+    SystemTable->BootServices->SetWatchdogTimer(
+        0, 0, 0, NULL);  // Disable watch dog timer
+
+    Status = SystemTable->BootServices->LocateProtocol(
+        &gEfiGraphicsOutputProtocolGuid, NULL,
+        (VOID **)&gop);  // Get GOP Protocol
+    if (EFI_ERROR(Status)) {
+        Print(L"Error:Failed to locate EFI Graphics Output Protocol - %r",
+              Status);
+        return Status;
+    }
+
+    Status = SystemTable->BootServices->LocateProtocol(
+        &gEfiSimpleFileSystemProtocolGuid, NULL, (VOID **)&fsp);
+    if (EFI_ERROR(Status)) {
+        Print(L"Error:Failed to locate EFI Simple FileSystem Protocol - %r",
+              Status);
+        return Status;
+    }
+
+    /*
+        Status = SystemTable->BootServices->LocateProtocol(
+            &gEfiMpServiceProtocolGuid, NULL,
+            (VOID **)&mps);  // Get MultiProcessor Protocol
+        if (EFI_ERROR(Status)) {
+            Print(L"Error:Failed to locate EFI MP Services Protocol - %r",
+       Status); return Status;
+        }
+    */
+
+    FrameBuffer_init(gop);
+    UINTN MemoryMapSize = 1, MapKey, DescriptorSize;
+    UINT32 DescriptorVersion;
+    do {
+        EFI_MEMORY_DESCRIPTOR *mem_desc =
+            (EFI_MEMORY_DESCRIPTOR *)AllocatePool(MemoryMapSize);
+        Status = SystemTable->BootServices->GetMemoryMap(
+            &MemoryMapSize, mem_desc, &MapKey, &DescriptorSize,
+            &DescriptorVersion);
+        if (EFI_ERROR(Status)) continue;
+        Status =
+            SystemTable->BootServices->ExitBootServices(ImageHandle, MapKey);
+    } while (EFI_ERROR(Status));
+    GDT_init();
+    interrupt_init();
+    for (int y = 0; y < buffer.VerticalRes; y++) {
+        for (int x = 0; x < buffer.HorizontalRes; x++) {
+            EFI_GRAPHICS_OUTPUT_BLT_PIXEL *pixel =
+                (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *)buffer.BaseAddress +
+                (buffer.HorizontalRes * y) + x;
+            RGBtoPixel(pixel, 0xFF0000);
+        }
+    }
+    textout('A');
+    textout('p');
+    textout('p');
+    textout('l');
+    textout('e');
+    while (1) asm volatile("hlt");
+    return Status;
+}