x86: reorganize the i386 directory

Add structure to the internals of the x86 directory.

Signed-off-by: Danny Holman <dholman@gymli.xyz>

1 files changed, 33 insertions, 0 deletions

diff --git a/arch/i386/boot/vga.h b/arch/i386/boot/vga.h
new file mode 100644
index 0000000..e89f202
--- /dev/null
+++ b/arch/i386/boot/vga.h
@@ -0,0 +1,33 @@
+#ifndef I386_VGA_H
+#define I386_VGA_H
+
+#include <stdint.h>
+
+enum vga_color {
+        VGA_COLOR_BLACK = 0,
+        VGA_COLOR_BLUE = 1,
+        VGA_COLOR_GREEN = 2,
+        VGA_COLOR_CYAN = 3,
+        VGA_COLOR_RED = 4,
+        VGA_COLOR_MAGENTA = 5,
+        VGA_COLOR_BROWN = 6,
+        VGA_COLOR_LIGHT_GREY = 7,
+        VGA_COLOR_DARK_GREY = 8,
+        VGA_COLOR_LIGHT_BLUE = 9,
+        VGA_COLOR_LIGHT_GREEN = 10,
+        VGA_COLOR_LIGHT_CYAN = 11,
+        VGA_COLOR_LIGHT_RED = 12,
+        VGA_COLOR_LIGHT_MAGENTA = 13,
+        VGA_COLOR_LIGHT_BROWN = 14,
+        VGA_COLOR_LIGHT_WHITE = 15,
+};
+
+static inline uint8_t vga_entry_color(enum vga_color fg, enum vga_color bg) {
+        return fg | bg << 4;
+}
+
+static inline uint16_t vga_entry(unsigned char uc, uint8_t color) {
+        return (uint16_t)uc | (uint16_t)color << 8;
+}
+
+#endif