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Make VGA textmode deinit reset video mode with BIOS

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This commit is contained in:
mintsuki 2020-04-24 15:22:46 +02:00
parent 5e9adf3542
commit b479d69c29
1 changed files with 4 additions and 10 deletions
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14
src/drivers/vga_textmode.c
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@ -1,6 +1,7 @@
#include <stdint.h>
#include <stddef.h>
#include <lib/cio.h>
#include <lib/real.h>
#include <drivers/vga_textmode.h>
#define VIDEO_BOTTOM ((VD_ROWS * VD_COLS) - 1)
@ -89,18 +90,11 @@ void init_vga_textmode(void) {
}
void deinit_vga_textmode(void) {
text_disable_cursor();
text_clear();
struct rm_regs r = {0};
port_out_b(0x3d4, 0x0a);
port_out_b(0x3d5, (port_in_b(0x3d5) & 0xc0) | 14);
port_out_b(0x3d4, 0x0b);
port_out_b(0x3d5, (port_in_b(0x3d5) & 0xe0) | 15);
r.eax = 0x0003;
port_out_b(0x3d4, 0x0f);
port_out_b(0x3d5, 0x00);
port_out_b(0x3d4, 0x0e);
port_out_b(0x3d5, 0x00);
rm_int(0x10, &r, &r);
}
static void text_set_cursor_palette(uint8_t c) {