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Kernel: Abstract TTY to use new VESA

This commit is contained in:
Bananymous 2022-12-15 19:05:07 +02:00
parent 930661619b
commit 9274c9ee2f
5 changed files with 284 additions and 143 deletions
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171
kernel/arch/i386/VESA.cpp Normal file
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@ -0,0 +1,171 @@
#include <kernel/multiboot.h>
#include <kernel/Serial.h>
#include <kernel/VESA.h>
#define MULTIBOOT_FLAGS_FRAMEBUFFER (1 << 12)
#define MULTIBOOT_FRAMEBUFFER_TYPE_GRAPHICS 1
#define MULTIBOOT_FRAMEBUFFER_TYPE_TEXT 2
extern multiboot_info_t* s_multiboot_info;
namespace VESA
{
static void* s_addr = nullptr;
static uint8_t s_bpp = 0;
static uint32_t s_width = 0;
static uint32_t s_height = 0;
static uint8_t s_mode = 0;
static void GraphicsPutCharAt(char ch, uint32_t x, uint32_t y, Color fg, Color bg);
static void GraphicsClear(Color color);
static void GraphicsScrollLine(uint32_t line);
static bool InitializeGraphicsMode();
static inline uint8_t TextColor(Color fg, Color bg);
static inline uint16_t TextEntry(uint8_t ch, uint8_t color);
static void TextPutCharAt(char c, uint32_t x, uint32_t y, Color fg, Color bg);
static void TextClear(Color color);
static void TextScrollLine(uint32_t line);
static bool InitializeTextMode();
void PutEntryAt(char ch, uint32_t x, uint32_t y, Color fg, Color bg)
{
if (x >= s_width)
return;
if (y >= s_height)
return;
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_GRAPHICS)
return GraphicsPutCharAt(ch, x, y, fg, bg);
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_TEXT)
return TextPutCharAt(ch, x, y, fg, bg);
}
void Clear(Color color)
{
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_GRAPHICS)
return GraphicsClear(color);
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_TEXT)
return TextClear(color);
}
void ScrollLine(uint32_t line)
{
if (line == 0 || line >= s_height)
return;
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_GRAPHICS)
return GraphicsScrollLine(line);
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_TEXT)
return TextScrollLine(line);
}
uint32_t GetWidth()
{
return s_width;
}
uint32_t GetHeight()
{
return s_height;
}
bool Initialize()
{
if (!(s_multiboot_info->flags & MULTIBOOT_FLAGS_FRAMEBUFFER))
return false;
auto& framebuffer = s_multiboot_info->framebuffer;
s_addr = (void*)framebuffer.addr;
s_bpp = framebuffer.bpp;
s_width = framebuffer.width;
s_height = framebuffer.height;
s_mode = framebuffer.type;
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_GRAPHICS)
{
dprintln("VESA in Graphics mode {}x{} ({} bpp)", s_width, s_height, s_bpp);
GraphicsClear(Color::BLACK);
return false;
}
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_TEXT)
{
dprintln("VESA in Text mode {}x{}", s_width, s_height);
TextClear(Color::BLACK);
return true;
}
dprintln("Unsupported type for VESA framebuffer");
return false;
}
static void GraphicsPutCharAt(char ch, uint32_t x, uint32_t y, Color fg, Color bg)
{
}
static void GraphicsClear(Color color)
{
}
static void GraphicsScrollLine(uint32_t line)
{
}
static bool InitializeGraphicsMode()
{
return false;
}
static inline uint8_t TextColor(Color fg, Color bg)
{
return ((bg & 0x0F) << 4) | (fg & 0x0F);
}
static inline uint16_t TextEntry(uint8_t ch, uint8_t color)
{
return ((uint16_t)color << 8) | ch;
}
static void TextPutCharAt(char c, uint32_t x, uint32_t y, Color fg, Color bg)
{
uint64_t index = y * s_width + x;
((uint16_t*)s_addr)[index] = TextEntry(c, TextColor(fg, bg));
}
static void TextClear(Color color)
{
for (uint32_t y = 0; y < s_height; y++)
for (uint32_t x = 0; x < s_width; x++)
TextPutCharAt(' ', x, y, Color::WHITE, color);
}
static void TextScrollLine(uint32_t line)
{
for (uint32_t x = 0; x < s_width; x++)
{
uint64_t index1 = (line - 0) * s_width + x;
uint64_t index2 = (line - 1) * s_width + x;
((uint16_t*)s_addr)[index2] = ((uint16_t*)s_addr)[index1];
}
}
static bool InitializeTextMode()
{
TextClear(Color::BLACK);
return true;
}
}

1
kernel/arch/i386/make.config
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@ -11,3 +11,4 @@ $(ARCHDIR)/GDT.o \
$(ARCHDIR)/GDT_asm.o \ $(ARCHDIR)/GDT_asm.o \
$(ARCHDIR)/IDT.o \ $(ARCHDIR)/IDT.o \
$(ARCHDIR)/IDT_asm.o \ $(ARCHDIR)/IDT_asm.o \
$(ARCHDIR)/VESA.o \

198
kernel/arch/i386/tty.cpp
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@ -1,12 +1,9 @@
#include <kernel/IO.h> #include <kernel/IO.h>
#include <kernel/multiboot.h>
#include <kernel/panic.h> #include <kernel/panic.h>
#include <kernel/Serial.h> #include <kernel/Serial.h>
#include <kernel/tty.h> #include <kernel/tty.h>
#include <kernel/VESA.h>
#include "vga.h"
#include <stdint.h>
#include <string.h> #include <string.h>
#define BEL 0x07 #define BEL 0x07
@ -22,89 +19,47 @@
namespace TTY namespace TTY
{ {
static size_t VGA_WIDTH; static uint32_t terminal_height = 0;
static size_t VGA_HEIGHT; static uint32_t terminal_width = 0;
static uint16_t* VGA_MEMORY = nullptr; static uint32_t terminal_row = 0;
static uint32_t terminal_col = 0;
static size_t terminal_row; static VESA::Color terminal_fg = VESA::Color::WHITE;
static size_t terminal_col; static VESA::Color terminal_bg = VESA::Color::BLACK;
static uint8_t terminal_color;
static uint16_t* terminal_buffer = nullptr;
static char s_ansi_escape_mode = '\0'; static char s_ansi_escape_mode = '\0';
static int s_ansi_escape_index = 0; static int s_ansi_escape_index = 0;
static int s_ansi_escape_nums[2] = { -1, -1 }; static int s_ansi_escape_nums[2] = { -1, -1 };
template<typename T> inline constexpr T max(T a, T b) { return a > b ? a : b; }
template<typename T> inline constexpr T min(T a, T b) { return a < b ? a : b; }
template<typename T> inline constexpr T clamp(T x, T a, T b) { return x < a ? a : x > b ? b : x; }
inline constexpr int max(int a, int b) { return a > b ? a : b; } void initialize()
inline constexpr int min(int a, int b) { return a < b ? a : b; }
inline constexpr int clamp(int x, int a, int b) { return x < a ? a : x > b ? b : x; }
void putentryat(unsigned char c, uint8_t color, size_t x, size_t y)
{ {
const size_t index = y * VGA_WIDTH + x; terminal_width = VESA::GetWidth();
terminal_buffer[index] = vga_entry(c, color); terminal_height = VESA::GetHeight();
} }
void clear() void clear()
{ {
for (size_t y = 0; y < VGA_HEIGHT; y++) VESA::Clear(VESA::Color::BLACK);
for (size_t x = 0; x < VGA_WIDTH; x++)
putentryat(' ', terminal_color, x, y);
} }
void initialize() void setcolor(VESA::Color fg, VESA::Color bg)
{ {
if (s_multiboot_info->flags & (1 << 12)) terminal_fg = fg;
{ terminal_bg = bg;
const framebuffer_info_t& fb = s_multiboot_info->framebuffer;
VGA_WIDTH = fb.width;
VGA_HEIGHT = fb.height;
VGA_MEMORY = (uint16_t*)fb.addr;
dprintln("width: {}, height: {}, bpp: {}, pitch: {}", fb.width, fb.height, fb.bpp, fb.pitch);
}
else
{
VGA_WIDTH = 80;
VGA_HEIGHT = 25;
VGA_MEMORY = (uint16_t*)0xB8000;
}
terminal_row = 0;
terminal_col = 0;
terminal_color = vga_entry_color(VGA_COLOR_WHITE, VGA_COLOR_BLACK);
terminal_buffer = VGA_MEMORY;
clear();
if (s_multiboot_info->flags & (1 << 12))
if (s_multiboot_info->framebuffer.type != 2)
dprintln("Invalid framebuffer_type in multiboot info");
}
void setcolor(uint8_t color)
{
terminal_color = color;
}
void scroll_line(size_t line)
{
for (size_t x = 0; x < VGA_WIDTH; x++)
{
const size_t index = line * VGA_WIDTH + x;
terminal_buffer[index - VGA_WIDTH] = terminal_buffer[index];
}
} }
void clear_line(size_t line) void clear_line(size_t line)
{ {
for (size_t x = 0; x < VGA_WIDTH; x++) for (size_t x = 0; x < terminal_width; x++)
putentryat(' ', terminal_color, x, line); VESA::PutEntryAt(' ', x, line, terminal_fg, terminal_bg);
} }
static void update_cursor() static void update_cursor()
{ {
uint16_t pos = terminal_row * VGA_WIDTH + terminal_col; uint16_t pos = terminal_row * terminal_width + terminal_col;
IO::outb(0x3D4, 0x0F); IO::outb(0x3D4, 0x0F);
IO::outb(0x3D5, (uint8_t) (pos & 0xFF)); IO::outb(0x3D5, (uint8_t) (pos & 0xFF));
IO::outb(0x3D4, 0x0E); IO::outb(0x3D4, 0x0E);
@ -130,59 +85,29 @@ namespace TTY
{ {
switch (s_ansi_escape_nums[0]) switch (s_ansi_escape_nums[0])
{ {
case -1: case 0: case -1:
terminal_color = vga_entry_color(VGA_COLOR_WHITE, VGA_COLOR_BLACK); case 0:
terminal_fg = VESA::Color::WHITE;
terminal_bg = VESA::Color::BLACK;
break; break;
case 30: case 30: terminal_fg = VESA::Color::BLACK; break;
terminal_color = vga_set_foreground(VGA_COLOR_BLACK, terminal_color); case 31: terminal_fg = VESA::Color::LIGHT_RED; break;
break; case 32: terminal_fg = VESA::Color::LIGHT_GREEN; break;
case 31: case 33: terminal_fg = VESA::Color::LIGHT_BROWN; break;
terminal_color = vga_set_foreground(VGA_COLOR_LIGHT_RED, terminal_color); case 34: terminal_fg = VESA::Color::LIGHT_BLUE; break;
break; case 35: terminal_fg = VESA::Color::LIGHT_MAGENTA; break;
case 32: case 36: terminal_fg = VESA::Color::LIGHT_CYAN; break;
terminal_color = vga_set_foreground(VGA_COLOR_LIGHT_GREEN, terminal_color); case 37: terminal_fg = VESA::Color::LIGHT_GREY; break;
break;
case 33:
terminal_color = vga_set_foreground(VGA_COLOR_LIGHT_BROWN, terminal_color);
break;
case 34:
terminal_color = vga_set_foreground(VGA_COLOR_LIGHT_BLUE, terminal_color);
break;
case 35:
terminal_color = vga_set_foreground(VGA_COLOR_LIGHT_MAGENTA, terminal_color);
break;
case 36:
terminal_color = vga_set_foreground(VGA_COLOR_LIGHT_CYAN, terminal_color);
break;
case 37:
terminal_color = vga_set_foreground(VGA_COLOR_LIGHT_GREY, terminal_color);
break;
case 40: case 40: terminal_bg = VESA::Color::BLACK; break;
terminal_color = vga_set_background(VGA_COLOR_BLACK, terminal_color); case 41: terminal_bg = VESA::Color::LIGHT_RED; break;
break; case 42: terminal_bg = VESA::Color::LIGHT_GREEN; break;
case 41: case 43: terminal_bg = VESA::Color::LIGHT_BROWN; break;
terminal_color = vga_set_background(VGA_COLOR_LIGHT_RED, terminal_color); case 44: terminal_bg = VESA::Color::LIGHT_BLUE; break;
break; case 45: terminal_bg = VESA::Color::LIGHT_MAGENTA; break;
case 42: case 46: terminal_bg = VESA::Color::LIGHT_CYAN; break;
terminal_color = vga_set_background(VGA_COLOR_LIGHT_GREEN, terminal_color); case 47: terminal_bg = VESA::Color::LIGHT_GREY; break;
break;
case 43:
terminal_color = vga_set_background(VGA_COLOR_LIGHT_BROWN, terminal_color);
break;
case 44:
terminal_color = vga_set_background(VGA_COLOR_LIGHT_BLUE, terminal_color);
break;
case 45:
terminal_color = vga_set_background(VGA_COLOR_LIGHT_MAGENTA, terminal_color);
break;
case 46:
terminal_color = vga_set_background(VGA_COLOR_LIGHT_CYAN, terminal_color);
break;
case 47:
terminal_color = vga_set_background(VGA_COLOR_LIGHT_GREY, terminal_color);
break;
} }
} }
@ -217,47 +142,47 @@ namespace TTY
case 'A': // Cursor Up case 'A': // Cursor Up
if (s_ansi_escape_nums[0] == -1) if (s_ansi_escape_nums[0] == -1)
s_ansi_escape_nums[0] = 1; s_ansi_escape_nums[0] = 1;
terminal_row = max(terminal_row - s_ansi_escape_nums[0], 0); terminal_row = max<int32_t>(terminal_row - s_ansi_escape_nums[0], 0);
return reset_ansi_escape(); return reset_ansi_escape();
case 'B': // Curson Down case 'B': // Curson Down
if (s_ansi_escape_nums[0] == -1) if (s_ansi_escape_nums[0] == -1)
s_ansi_escape_nums[0] = 1; s_ansi_escape_nums[0] = 1;
terminal_row = min(terminal_row + s_ansi_escape_nums[0], VGA_HEIGHT - 1); terminal_row = min<int32_t>(terminal_row + s_ansi_escape_nums[0], terminal_height - 1);
return reset_ansi_escape(); return reset_ansi_escape();
case 'C': // Cursor Forward case 'C': // Cursor Forward
if (s_ansi_escape_nums[0] == -1) if (s_ansi_escape_nums[0] == -1)
s_ansi_escape_nums[0] = 1; s_ansi_escape_nums[0] = 1;
terminal_col = min(terminal_col + s_ansi_escape_nums[0], VGA_WIDTH - 1); terminal_col = min<int32_t>(terminal_col + s_ansi_escape_nums[0], terminal_width - 1);
return reset_ansi_escape(); return reset_ansi_escape();
case 'D': // Cursor Back case 'D': // Cursor Back
if (s_ansi_escape_nums[0] == -1) if (s_ansi_escape_nums[0] == -1)
s_ansi_escape_nums[0] = 1; s_ansi_escape_nums[0] = 1;
terminal_col = max(terminal_col - s_ansi_escape_nums[0], 0); terminal_col = max<int32_t>(terminal_col - s_ansi_escape_nums[0], 0);
return reset_ansi_escape(); return reset_ansi_escape();
case 'E': // Cursor Next Line case 'E': // Cursor Next Line
if (s_ansi_escape_nums[0] == -1) if (s_ansi_escape_nums[0] == -1)
s_ansi_escape_nums[0] = 1; s_ansi_escape_nums[0] = 1;
terminal_row = min(terminal_row + s_ansi_escape_nums[0], VGA_HEIGHT - 1); terminal_row = min<int32_t>(terminal_row + s_ansi_escape_nums[0], terminal_height - 1);
terminal_col = 0; terminal_col = 0;
return reset_ansi_escape(); return reset_ansi_escape();
case 'F': // Cursor Previous Line case 'F': // Cursor Previous Line
if (s_ansi_escape_nums[0] == -1) if (s_ansi_escape_nums[0] == -1)
s_ansi_escape_nums[0] = 1; s_ansi_escape_nums[0] = 1;
terminal_row = max(terminal_row - s_ansi_escape_nums[0], 0); terminal_row = max<int32_t>(terminal_row - s_ansi_escape_nums[0], 0);
terminal_col = 0; terminal_col = 0;
return reset_ansi_escape(); return reset_ansi_escape();
case 'G': // Cursor Horizontal Absolute case 'G': // Cursor Horizontal Absolute
if (s_ansi_escape_nums[0] == -1) if (s_ansi_escape_nums[0] == -1)
s_ansi_escape_nums[0] = 1; s_ansi_escape_nums[0] = 1;
terminal_col = clamp(s_ansi_escape_nums[0] - 1, 0, VGA_WIDTH - 1); terminal_col = clamp<int32_t>(s_ansi_escape_nums[0] - 1, 0, terminal_width - 1);
return reset_ansi_escape(); return reset_ansi_escape();
case 'H': // Cursor Position case 'H': // Cursor Position
if (s_ansi_escape_nums[0] == -1) if (s_ansi_escape_nums[0] == -1)
s_ansi_escape_nums[0] = 1; s_ansi_escape_nums[0] = 1;
if (s_ansi_escape_nums[1] == -1) if (s_ansi_escape_nums[1] == -1)
s_ansi_escape_nums[1] = 1; s_ansi_escape_nums[1] = 1;
terminal_row = clamp(s_ansi_escape_nums[0] - 1, 0, VGA_HEIGHT - 1); terminal_row = clamp<int32_t>(s_ansi_escape_nums[0] - 1, 0, terminal_height - 1);
terminal_col = clamp(s_ansi_escape_nums[1] - 1, 0, VGA_WIDTH - 1); terminal_col = clamp<int32_t>(s_ansi_escape_nums[1] - 1, 0, terminal_width - 1);
return reset_ansi_escape(); return reset_ansi_escape();
case 'J': // Erase in Display case 'J': // Erase in Display
dprintln("Unsupported ANSI CSI character J"); dprintln("Unsupported ANSI CSI character J");
@ -266,16 +191,16 @@ namespace TTY
switch (s_ansi_escape_nums[0]) switch (s_ansi_escape_nums[0])
{ {
case -1: case 0: case -1: case 0:
for (size_t i = terminal_col; i < VGA_WIDTH; i++) for (size_t i = terminal_col; i < terminal_width; i++)
putentryat(' ', terminal_color, i, terminal_row); VESA::PutEntryAt(' ', i, terminal_row, terminal_fg, terminal_bg);
break; break;
case 1: case 1:
for (size_t i = 0; i <= terminal_col; i++) for (size_t i = 0; i <= terminal_col; i++)
putentryat(' ', terminal_color, i, terminal_row); VESA::PutEntryAt(' ', i, terminal_row, terminal_fg, terminal_bg);
break; break;
case 2: case 2:
for (size_t i = 0; i < VGA_WIDTH; i++) for (size_t i = 0; i < terminal_width; i++)
putentryat(' ', terminal_color, i, terminal_row); VESA::PutEntryAt(' ', i, terminal_row, terminal_fg, terminal_bg);
break; break;
} }
return reset_ansi_escape(); return reset_ansi_escape();
@ -305,9 +230,6 @@ namespace TTY
void putchar(char c) void putchar(char c)
{ {
if (VGA_MEMORY == nullptr)
return;
if (s_ansi_escape_mode) if (s_ansi_escape_mode)
return handle_ansi_escape(c); return handle_ansi_escape(c);
@ -339,22 +261,22 @@ namespace TTY
s_ansi_escape_mode = '\1'; s_ansi_escape_mode = '\1';
break; break;
default: default:
putentryat(c, terminal_color, terminal_col, terminal_row); VESA::PutEntryAt(c, terminal_col, terminal_row, terminal_fg, terminal_bg);
terminal_col++; terminal_col++;
break; break;
} }
if (terminal_col >= VGA_WIDTH) if (terminal_col >= terminal_width)
{ {
terminal_col = 0; terminal_col = 0;
terminal_row++; terminal_row++;
} }
while (terminal_row >= VGA_HEIGHT) while (terminal_row >= terminal_height)
{ {
for (size_t line = 1; line < VGA_HEIGHT; line++) for (size_t line = 1; line < terminal_height; line++)
scroll_line(line); VESA::ScrollLine(line);
clear_line(VGA_HEIGHT - 1); clear_line(terminal_height - 1);
terminal_col = 0; terminal_col = 0;
terminal_row--; terminal_row--;

36
kernel/include/kernel/VESA.h Normal file
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@ -0,0 +1,36 @@
#pragma once
#include <stdint.h>
namespace VESA
{
enum Color : uint8_t
{
BLACK = 0,
BLUE = 1,
GREEN = 2,
CYAN = 3,
RED = 4,
MAGENTA = 5,
BROWN = 6,
LIGHT_GREY = 7,
DARK_GREY = 8,
LIGHT_BLUE = 9,
LIGHT_GREEN = 10,
LIGHT_CYAN = 11,
LIGHT_RED = 12,
LIGHT_MAGENTA = 13,
LIGHT_BROWN = 14,
WHITE = 15,
};
bool Initialize();
void PutEntryAt(char, uint32_t, uint32_t, Color, Color);
void Clear(Color);
void ScrollLine(uint32_t line);
uint32_t GetWidth();
uint32_t GetHeight();
}

17
kernel/kernel/kernel.cpp
View File

@ -12,6 +12,7 @@
#include <kernel/Serial.h> #include <kernel/Serial.h>
#include <kernel/Shell.h> #include <kernel/Shell.h>
#include <kernel/tty.h> #include <kernel/tty.h>
#include <kernel/VESA.h>
#define DISABLE_INTERRUPTS() asm volatile("cli") #define DISABLE_INTERRUPTS() asm volatile("cli")
#define ENABLE_INTERRUPTS() asm volatile("sti") #define ENABLE_INTERRUPTS() asm volatile("sti")
@ -23,14 +24,24 @@ void kernel_main(multiboot_info_t* mbi, uint32_t magic)
{ {
DISABLE_INTERRUPTS(); DISABLE_INTERRUPTS();
Serial::initialize();
if (magic != 0x2BADB002)
{
dprintln("Invalid multiboot magic number");
return;
}
s_multiboot_info = mbi; s_multiboot_info = mbi;
if (magic != 0x2BADB002) if (!VESA::Initialize())
{
dprintln("Could not initialize VESA");
return; return;
}
Serial::initialize();
TTY::initialize(); TTY::initialize();
dprintln("{}", mbi->framebuffer.type);
kmalloc_initialize(); kmalloc_initialize();
PIC::initialize(); PIC::initialize();