フレームバッファ割り込みの実装

2020-08-29 17:13:36 +09:00
parent 266f9bf4af
commit 6159cb9d27
18 changed files with 1003 additions and 0 deletions
--- a/text.c
+++ b/text.c
@@ -0,0 +1,76 @@
+#include "text.h"
+
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PrintLib.h>
+#include <Protocol/SimpleFileSystem.h>
+
+#include "fb.h"
+#include "font.h"
+/*
+char keycode[] = {
+0x0,
+};
+*/
+/*
+void textinit(EFI_SIMPLE_FILE_SYSTEM_PROTOCOL* fsp) {
+    EFI_FILE_PROTOCOL *root, *file;
+
+    EFI_STATUS Status = fsp->OpenVolume(fsp, &root);
+    if (EFI_ERROR(Status)) {
+        Print(L"Error:Failed to open root filesystem - %r", Status);
+        return;
+    }
+
+    Status = root->Open(root, &file, L"font.bdf", EFI_FILE_MODE_READ,
+                        EFI_FILE_READ_ONLY);
+    if (EFI_ERROR(Status)) {
+        Print(L"Error:Failed to open font file - %r", Status);
+        return;
+    }
+    UINTN buf_size = 1;
+    char* fontfiledata = AllocateRuntimeZeroPool(buf_size);
+    if (!fontfiledata) {
+        Print(L"Error:Failed to allocate font memory");
+        return;
+    }
+
+    Status = file->Read(file, &buf_size, (VOID*)fontfiledata);
+    if (Status == EFI_BUFFER_TOO_SMALL) {
+        FreePool(fontfiledata);
+        fontfiledata = AllocateRuntimeZeroPool(buf_size);
+        if (!fontfiledata) {
+            Print(L"Error:Failed to allocate font memory");
+            return;
+        }
+        Status = file->Read(file, &buf_size, (VOID*)fontfiledata);
+        if (EFI_ERROR(Status)) {
+            Print(L"Error:Failed to read font file - %r", Status);
+            return;
+        }
+    } else if (EFI_ERROR(Status)) {
+        Print(L"Error:Failed to read font file - %r", Status);
+        return;
+    }
+    file->Close(file);
+    root->Close(root);
+}*/
+
+void textout(UINT8 code) {
+    static UINTN x = 0, y = 0;
+    for (int row = 0; row < 13; row++) {
+        for (int column = 0; column < 8; column++) {
+            EFI_GRAPHICS_OUTPUT_BLT_PIXEL *pixel =
+                (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *)buffer.BaseAddress +
+                y * 13 * buffer.HorizontalRes + row * buffer.HorizontalRes +
+                8 * x + column;
+            if ((font[code][row] >> (7 - column)) & 0x1)
+                RGBtoPixel(pixel, 0x00FF00);
+        }
+    }
+    if (x < (buffer.HorizontalRes / 8) - 1)
+        x++;
+    else if (y < buffer.VerticalRes / 13) {
+        x = 0;
+        y++;
+    }
+}