x86_64: vga: implement basic cursor configuration

1 files changed, 10 insertions, 1 deletions

diff --git a/source/arch/x86_64/src/video/vga/text.cpp b/source/arch/x86_64/src/video/vga/text.cpp
index ad9e46c..8259c5a 100644
--- a/source/arch/x86_64/src/video/vga/text.cpp
+++ b/source/arch/x86_64/src/video/vga/text.cpp
@@ -1,6 +1,7 @@
 #include "arch/video/vga/text.hpp"
 
 #include "arch/boot/pointers.hpp"
+#include "arch/video/vga/io.hpp"
 #include "memory/asm_pointer.hpp"
 
 #include <algorithm>
@@ -30,9 +31,17 @@ namespace teachos::arch::video::vga::text
     std::ranges::fill_n(*text_buffer, 2000, std::pair{' ', attribute});
   }
 
+  auto cursor(bool enabled) -> void
+  {
+    auto cursor_disable_byte = std::byte{!enabled} << 5;
+
+    crtc::address_port::write(crtc::registers::cursor_start);
+    crtc::data_port::write(vga::crtc::data_port::read() | cursor_disable_byte);
+  }
+
   auto write(std::string_view code_points, attribute attribute) -> void
   {
     std::ranges::for_each(code_points, [&](auto code_point) { write(code_point, attribute); });
   }
 
-}  // namespace teachos::arch::video::vga::text
\ No newline at end of file
+}  // namespace teachos::arch::video::vga::text