Loaded a kernel

2026-02-26 17:41:53 +00:00
parent 8993630081
commit f266dd7c8c
5 changed files with 365 additions and 79 deletions
--- a/kernel.c
+++ b/kernel.c
@@ -0,0 +1,69 @@
+#include <efi.h>
+
+#include "boot_info.h"
+
+void kmain(BootInfo *Boot)
+{
+    EFI_INPUT_KEY Key;
+
+    Boot->clear_screen();
+    Boot->set_attribute(EFI_TEXT_ATTR(EFI_LIGHTGREEN, EFI_BLACK));
+
+    Boot->print(L"================================================\n\r");
+    Boot->print(L"  Welcome to Simple UEFI Operating System!\n\r");
+    Boot->print(L"================================================\n\r");
+    Boot->print(L"\n\r");
+    Boot->print(L"System Information:\n\r");
+    Boot->print(L"  UEFI Firmware Vendor: %s\n\r", Boot->SystemTable->FirmwareVendor);
+    Boot->print(L"  UEFI Firmware Revision: %d.%d\n\r",
+                Boot->SystemTable->FirmwareRevision >> 16,
+                Boot->SystemTable->FirmwareRevision & 0xFFFF);
+    Boot->print(L"\n\r");
+
+    Boot->print(L"Available Services:\n\r");
+    Boot->print(L"  - Console Input/Output: Active\n\r");
+    Boot->print(L"  - Runtime Services: Active\n\r");
+    Boot->print(L"  - Boot Services: Active\n\r");
+    Boot->print(L"\n\r");
+
+    Boot->print(L"Commands:\n\r");
+    Boot->print(L"  'h' - Display help\n\r");
+    Boot->print(L"  'i' - Display system info\n\r");
+    Boot->print(L"  'c' - Clear screen\n\r");
+    Boot->print(L"  'q' - Shutdown\n\r");
+    Boot->print(L"\n\r");
+    Boot->print(L"Press a key to start...\n\r");
+
+    while (TRUE) {
+        if (EFI_ERROR(Boot->read_key(&Key))) {
+            continue;
+        }
+
+        if (Key.UnicodeChar == L'q' || Key.UnicodeChar == L'Q') {
+            Boot->print(L"\n\rShutting down...\n\r");
+            Boot->shutdown();
+        } else if (Key.UnicodeChar == L'h' || Key.UnicodeChar == L'H') {
+            Boot->print(L"\n\r=== Help ===\n\r");
+            Boot->print(L"This is a minimal UEFI operating system.\n\r");
+            Boot->print(L"It demonstrates basic UEFI functionality.\n\r");
+            Boot->print(L"\n\r");
+        } else if (Key.UnicodeChar == L'i' || Key.UnicodeChar == L'I') {
+            Boot->print(L"\n\r=== System Info ===\n\r");
+            Boot->print(L"Firmware Vendor: %s\n\r", Boot->SystemTable->FirmwareVendor);
+            Boot->print(L"Firmware Revision: %d.%d\n\r",
+                        Boot->SystemTable->FirmwareRevision >> 16,
+                        Boot->SystemTable->FirmwareRevision & 0xFFFF);
+            Boot->print(L"UEFI Specification: %d.%d\n\r",
+                        Boot->SystemTable->Hdr.Revision >> 16,
+                        Boot->SystemTable->Hdr.Revision & 0xFFFF);
+            Boot->print(L"\n\r");
+        } else if (Key.UnicodeChar == L'c' || Key.UnicodeChar == L'C') {
+            Boot->clear_screen();
+            Boot->print(L"Screen cleared. Press 'h' for help.\n\r");
+        } else if (Key.UnicodeChar >= 32 && Key.UnicodeChar < 127) {
+            Boot->print(L"%c", Key.UnicodeChar);
+        } else if (Key.UnicodeChar == L'\r') {
+            Boot->print(L"\n\r> ");
+        }
+    }
+}