feat(loader, kernel): impl part of loader and initialize kernel structure

2026-04-11 09:42:09 +08:00
parent 1233ae9e9b
commit 34ccf69569
53 changed files with 1743 additions and 777 deletions
--- a/arch/x86_64/boot/video.zig
+++ b/arch/x86_64/boot/video.zig
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+// Ported from Linux kernel include/uapi/linux/screen_info.h
+
+const std = @import("std");
+
+pub const ScreenInfo = extern struct{
+    orig_x: u8 align(1),             // 0x00
+    orig_y: u8 align(1),             // 0x01
+    ext_mem_k: u16 align(1),         // 0x02
+    orig_video_page: u16 align(1),   // 0x04
+    orig_video_mode: u8 align(1),    // 0x06
+    orig_video_cols: u8 align(1),    // 0x07
+    flags: u8 align(1),              // 0x08
+    unused2: u8 align(1),            // 0x09
+    orig_video_ega_bx: u16 align(1), // 0x0a
+    unused3: u16 align(1),           // 0x0c
+    orig_video_lines: u8 align(1),   // 0x0e
+    orig_video_isVGA: u8 align(1),   // 0x0f
+    orig_video_points: u16 align(1), // 0x10
+
+    // VESA graphic mode -- linear frame buffer
+    lfb_width: u16 align(1),         // 0x12
+    lfb_height: u16 align(1),        // 0x14
+    lfb_depth: u16 align(1),         // 0x16
+    lfb_base: u32 align(1),          // 0x18
+    lfb_size: u32 align(1),          // 0x1c
+    cl_magic: u16 align(1),          // 0x20
+    cl_offset: u16 align(1),         // 0x22
+    lfb_linelength: u16 align(1),    // 0x24
+    red_size: u8 align(1),           // 0x26
+    red_pos: u8 align(1),            // 0x27
+    green_size: u8 align(1),         // 0x28
+    green_pos: u8 align(1),          // 0x29
+    blue_size: u8 align(1),          // 0x2a
+    blue_pos: u8 align(1),           // 0x2b
+    rsvd_size: u8 align(1),          // 0x2c
+    rsvd_pos: u8 align(1),           // 0x2d
+    vesapm_seg: u16 align(1),        // 0x2e
+    vesapm_off: u16 align(1),        // 0x30
+    pages: u16 align(1),             // 0x32
+    vesa_attributes: u16 align(1),   // 0x34
+    capabilities: u32 align(1),      // 0x36
+    ext_lfb_base: u32 align(1),      // 0x3a
+    _reserved: [2]u8 align(1),       // 0x3e
+};
+
+// Common video types
+pub const VideoType = enum(u8) {
+    MDA = 0x10,     // Monochrome Text Display
+    CGA = 0x11,     // CGA Display
+    EGAM = 0x20,    // EGA/VGA in Monochrome Mode
+    EGAC = 0x21,    // EGA in Color Mode
+    VGAC = 0x22,    // VGA+ in Color Mode
+    VLFB = 0x23,    // VESA VGA in graphic mode
+    EFI = 0x70,     // EFI graphic mode
+};
+
+// Video flags
+pub const VIDEO_FLAGS_NOCURSOR: u8 = 1 << 0; // The video mode has no cursor set
+
+// Video capabilities
+pub const VIDEO_CAPABILITY_SKIP_QUIRKS: u32 = 1 << 0;
+pub const VIDEO_CAPABILITY_64BIT_BASE: u32 = 1 << 1; // Frame buffer base is 64-bit
+
+comptime {
+    std.debug.assert(@sizeOf(ScreenInfo) == 0x40);
+}