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Add TTY and VGA interface

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Removed redundant files


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This commit is contained in:
ED 2019-05-22 20:12:46 +01:00
parent 0196ef7824
commit faeb433bb0
7 changed files with 3016 additions and 98 deletions
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94
src/kernel/kmain.zig
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@ -1,17 +1,14 @@
//
// kmain
// Zig version:
// Author: DrDeano
// Date: 2019-03-30
//
// Zig version: 0.4.0
const builtin = @import("builtin");
const arch = @import("arch.zig");
const arch = if (builtin.is_test) @import("../../test/kernel/arch_mock.zig") else @import("arch.zig");
const multiboot = @import("multiboot.zig");
const tty = @import("tty.zig");
const vga = @import("vga.zig");
pub fn panic(msg: []const u8, error_return_trace: ?*builtin.StackTrace) noreturn {
@setCold(true);
terminal.write("KERNEL PANIC: ");
terminal.write(msg);
tty.print("\nKERNEL PANIC: {}\n", msg);
while (true) {}
}
@ -19,81 +16,8 @@ pub export fn kmain(mb_info: *multiboot.multiboot_info_t, mb_magic: u32) void {
if (mb_magic == multiboot.MULTIBOOT_BOOTLOADER_MAGIC) {
// Booted with compatible bootloader
arch.init();
terminal.initialize();
terminal.write("Hello, kernel World!");
vga.init();
tty.init();
tty.print("\nHello Pluto from kernel :)\n");
}
}
// Hardware text mode color constants
const VGA_COLOUR = enum(u8) {
VGA_COLOUR_BLACK,
VGA_COLOUR_BLUE,
VGA_COLOUR_GREEN,
VGA_COLOUR_CYAN,
VGA_COLOUR_RED,
VGA_COLOUR_MAGENTA,
VGA_COLOUR_BROWN,
VGA_COLOUR_LIGHT_GREY,
VGA_COLOUR_DARK_GREY,
VGA_COLOUR_LIGHT_BLUE,
VGA_COLOUR_LIGHT_GREEN,
VGA_COLOUR_LIGHT_CYAN,
VGA_COLOUR_LIGHT_RED,
VGA_COLOUR_LIGHT_MAGENTA,
VGA_COLOUR_LIGHT_BROWN,
VGA_COLOUR_WHITE,
};
fn vga_entry_colour(fg: VGA_COLOUR, bg: VGA_COLOUR) u8 {
return @enumToInt(fg) | (@enumToInt(bg) << 4);
}
fn vga_entry(uc: u8, colour: u8) u16 {
return u16(uc) | (u16(colour) << 8);
}
const VGA_WIDTH = 80;
const VGA_HEIGHT = 25;
const terminal = struct {
var row = usize(0);
var column = usize(0);
var colour = vga_entry_colour(VGA_COLOUR.VGA_COLOUR_LIGHT_GREY, VGA_COLOUR.VGA_COLOUR_BLACK);
const buffer = @intToPtr([*]volatile u16, 0xC00B8000);
fn initialize() void {
var y = usize(0);
while (y < VGA_HEIGHT) : (y += 1) {
var x = usize(0);
while (x < VGA_WIDTH) : (x += 1) {
putCharAt(' ', colour, x, y);
}
}
}
fn setColour(new_colour: u8) void {
colour = new_colour;
}
fn putCharAt(c: u8, new_colour: u8, x: usize, y: usize) void {
const index = y * VGA_WIDTH + x;
buffer[index] = vga_entry(c, new_colour);
}
fn putChar(c: u8) void {
putCharAt(c, colour, column, row);
column += 1;
if (column == VGA_WIDTH) {
column = 0;
row += 1;
if (row == VGA_HEIGHT)
row = 0;
}
}
fn write(data: []const u8) void {
for (data) |c|
putChar(c);
}
};