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Kernel: Rewrite the whole VESA driver 

We dont support vga text mode currently. I might add it later if needed.

I also removed mouse 'support' from Shell since it didn't do anything
and I didn't implement arbitary bitmap rendering to framebuffer
This commit is contained in:
Bananymous 2023-01-23 13:07:52 +02:00
parent 10c7ef7baa
commit 1b9f7aa815
14 changed files with 327 additions and 454 deletions
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1
kernel/Makefile
View File

@ -44,6 +44,7 @@ kernel/Serial.o \
kernel/Shell.o \ kernel/Shell.o \
kernel/SSP.o \ kernel/SSP.o \
kernel/TTY.o \ kernel/TTY.o \
kernel/VesaTerminalDriver.o \
icxxabi.o \ icxxabi.o \
OBJS= \ OBJS= \

317
kernel/arch/i386/VESA.cpp
View File

@ -1,317 +0,0 @@
#include <kernel/font.h>
#include <kernel/IO.h>
#include <kernel/kmalloc.h>
#include <kernel/MMU.h>
#include <kernel/multiboot.h>
#include <kernel/Panic.h>
#include <kernel/Serial.h>
#include <kernel/VESA.h>
#include <string.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;
extern const struct bitmap_font font;
namespace VESA
{
static uintptr_t s_addr = 0;
static uint8_t s_bpp = 0;
static uint32_t s_pitch = 0;
static uint32_t s_width = 0;
static uint32_t s_height = 0;
static uint8_t s_mode = 0;
static uint32_t s_terminal_width = 0;
static uint32_t s_terminal_height = 0;
static void (*PutCharAtImpl)(uint16_t, uint32_t, uint32_t, Color, Color) = nullptr;
static void (*ClearImpl)(Color) = nullptr;
static void (*SetCursorPositionImpl)(uint32_t, uint32_t, Color) = nullptr;
static void GraphicsPutBitmapAt(const uint8_t* bitmap, uint32_t x, uint32_t y, Color fg);
static void GraphicsPutBitmapAt(const uint8_t* bitmap, uint32_t x, uint32_t y, Color fg, Color bg);
static void GraphicsPutCharAt(uint16_t ch, uint32_t x, uint32_t y, Color fg, Color bg);
static void GraphicsClear(Color color);
static void GraphicsSetCursorPosition(uint32_t x, uint32_t y, Color fg);
static void TextPutCharAt(uint16_t ch, uint32_t x, uint32_t y, Color fg, Color bg);
static void TextClear(Color color);
static void TextSetCursorPosition(uint32_t x, uint32_t y, Color fg);
void PutBitmapAt(const uint8_t* bitmap, uint32_t x, uint32_t y, Color fg)
{
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_GRAPHICS)
GraphicsPutBitmapAt(bitmap, x, y, fg);
}
void PutBitmapAt(const uint8_t* bitmap, uint32_t x, uint32_t y, Color fg, Color bg)
{
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_GRAPHICS)
GraphicsPutBitmapAt(bitmap, x, y, fg, bg);
}
void PutCharAt(uint16_t ch, uint32_t x, uint32_t y, Color fg, Color bg)
{
if (x >= s_width || y >= s_height)
return;
PutCharAtImpl(ch, x, y, fg, bg);
}
void Clear(Color color)
{
ClearImpl(color);
}
void SetCursorPosition(uint32_t x, uint32_t y, Color fg)
{
SetCursorPositionImpl(x, y, fg);
}
uint32_t GetTerminalWidth()
{
return s_terminal_width;
}
uint32_t GetTerminalHeight()
{
return s_terminal_height;
}
bool Initialize()
{
if (!(g_multiboot_info->flags & MULTIBOOT_FLAGS_FRAMEBUFFER))
{
derrorln("bootloader did not provide a memory map");
return false;
}
auto& framebuffer = g_multiboot_info->framebuffer;
s_addr = framebuffer.addr;
s_bpp = framebuffer.bpp;
s_pitch = framebuffer.pitch;
s_width = framebuffer.width;
s_height = framebuffer.height;
s_mode = framebuffer.type;
MMU::Get().AllocateRange(s_addr, s_pitch * s_height);
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_GRAPHICS)
{
if (s_bpp != 24 && s_bpp != 32)
{
derrorln("Unsupported bpp {}", s_bpp);
return false;
}
dprintln("Graphics Mode {}x{} ({} bpp)", s_width, s_height, s_bpp);
PutCharAtImpl = GraphicsPutCharAt;
ClearImpl = GraphicsClear;
SetCursorPositionImpl = GraphicsSetCursorPosition;
s_terminal_width = s_width / font.Width;
s_terminal_height = s_height / font.Height;
}
else if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_TEXT)
{
dprintln("Text Mode {}x{}", s_width, s_height);
PutCharAtImpl = TextPutCharAt;
ClearImpl = TextClear;
SetCursorPositionImpl = TextSetCursorPosition;
s_terminal_width = s_width;
s_terminal_height = s_height;
}
else
{
derrorln("Unsupported type for VESA framebuffer");
return false;
}
SetCursorPositionImpl(0, 0, Color::BRIGHT_WHITE);
ClearImpl(Color::BLACK);
return true;
}
static uint32_t s_graphics_colors[]
{
0x00'00'00'00,
0x00'00'00'AA,
0x00'00'AA'00,
0x00'00'AA'AA,
0x00'AA'00'00,
0x00'AA'00'AA,
0x00'AA'55'00,
0x00'AA'AA'AA,
0x00'55'55'55,
0x00'55'55'FF,
0x00'55'FF'55,
0x00'55'FF'FF,
0x00'FF'55'55,
0x00'FF'55'FF,
0x00'FF'FF'55,
0x00'FF'FF'FF,
};
static void GraphicsSetPixel(uint32_t offset, uint32_t color)
{
uint32_t* address = (uint32_t*)(s_addr + offset);
switch (s_bpp)
{
case 24:
*address = (*address & 0xFF000000) | (color & 0x00FFFFFF);
break;
case 32:
*address = color;
break;
}
}
static void GraphicsPutBitmapAt(const uint8_t* bitmap, uint32_t x, uint32_t y, Color fg)
{
uint32_t u32_fg = s_graphics_colors[(uint8_t)fg];
uint32_t fx = x * font.Width;
uint32_t fy = y * font.Height;
uint32_t row_offset = (fy * s_pitch) + (fx * (s_bpp / 8));
for (uint32_t gy = 0; gy < font.Height; gy++)
{
uint32_t pixel_offset = row_offset;
for (uint32_t gx = 0; gx < font.Width; gx++)
{
if (bitmap[gy] & (1 << (font.Width - gx - 1)))
GraphicsSetPixel(pixel_offset, u32_fg);
pixel_offset += s_bpp / 8;
}
row_offset += s_pitch;
}
}
static void GraphicsPutBitmapAt(const uint8_t* bitmap, uint32_t x, uint32_t y, Color fg, Color bg)
{
uint32_t u32_fg = s_graphics_colors[(uint8_t)fg];
uint32_t u32_bg = s_graphics_colors[(uint8_t)bg];
uint32_t fx = x * font.Width;
uint32_t fy = y * font.Height;
uint32_t row_offset = (fy * s_pitch) + (fx * (s_bpp / 8));
for (uint32_t gy = 0; gy < font.Height; gy++)
{
uint32_t pixel_offset = row_offset;
for (uint32_t gx = 0; gx < font.Width; gx++)
{
GraphicsSetPixel(pixel_offset, (bitmap[gy] & (1 << (font.Width - gx - 1))) ? u32_fg : u32_bg);
pixel_offset += s_bpp / 8;
}
row_offset += s_pitch;
}
}
static void GraphicsPutCharAt(uint16_t ch, uint32_t x, uint32_t y, Color fg, Color bg)
{
// find correct bitmap
uint32_t index = 0;
for (uint32_t i = 0; i < font.Chars; i++)
{
if (font.Index[i] == ch)
{
index = i;
break;
}
}
const uint8_t* glyph = font.Bitmap + index * font.Height;
GraphicsPutBitmapAt(glyph, x, y, fg, bg);
}
static void GraphicsClear(Color color)
{
uint32_t u32_color = s_graphics_colors[(uint8_t)color];
if (s_bpp == 32)
{
uint32_t bytes_per_row = s_pitch / 4;
for (uint32_t y = 0; y < s_height; y++)
for (uint32_t x = 0; x < s_width; x++)
((uint32_t*)s_addr)[y * bytes_per_row + x] = u32_color;
return;
}
uint32_t row_offset = 0;
for (uint32_t y = 0; y < s_height; y++)
{
uint32_t pixel_offset = row_offset;
for (uint32_t x = 0; x < s_width; x++)
{
GraphicsSetPixel(pixel_offset, u32_color);
pixel_offset += s_bpp / 8;
}
row_offset += s_pitch;
}
}
static void GraphicsSetCursorPosition(uint32_t x, uint32_t y, Color fg)
{
if (font.Width == 8 && font.Height == 16)
{
uint8_t cursor[] = {
________,
________,
________,
________,
________,
________,
________,
________,
________,
________,
________,
________,
________,
XXXXXXXX,
XXXXXXXX,
________,
};
GraphicsPutBitmapAt(cursor, x, y, fg);
}
}
static inline uint8_t TextColor(Color fg, Color bg)
{
return (((uint8_t)bg & 0x0F) << 4) | ((uint8_t)fg & 0x0F);
}
static inline uint16_t TextEntry(uint8_t ch, uint8_t color)
{
return ((uint16_t)color << 8) | ch;
}
static void TextPutCharAt(uint16_t ch, uint32_t x, uint32_t y, Color fg, Color bg)
{
uint32_t index = y * s_width + x;
((uint16_t*)s_addr)[index] = TextEntry(ch, 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::BRIGHT_WHITE, color);
}
static void TextSetCursorPosition(uint32_t x, uint32_t y, Color)
{
uint16_t position = y * s_width + x;
IO::outb(0x3D4, 0x0F);
IO::outb(0x3D5, (uint8_t) (position & 0xFF));
IO::outb(0x3D4, 0x0E);
IO::outb(0x3D5, (uint8_t) ((position >> 8) & 0xFF));
}
}

1
kernel/arch/i386/make.config
View File

@ -9,5 +9,4 @@ $(ARCHDIR)/boot.o \
$(ARCHDIR)/CPUID.o \ $(ARCHDIR)/CPUID.o \
$(ARCHDIR)/IDT.o \ $(ARCHDIR)/IDT.o \
$(ARCHDIR)/MMU.o \ $(ARCHDIR)/MMU.o \
$(ARCHDIR)/VESA.o \

8
kernel/include/kernel/Shell.h
View File

@ -21,7 +21,6 @@ namespace Kernel
BAN::Vector<BAN::String> ParseArguments(BAN::StringView) const; BAN::Vector<BAN::String> ParseArguments(BAN::StringView) const;
void ProcessCommand(const BAN::Vector<BAN::String>&); void ProcessCommand(const BAN::Vector<BAN::String>&);
void KeyEventCallback(Input::KeyEvent); void KeyEventCallback(Input::KeyEvent);
void MouseMoveEventCallback(Input::MouseMoveEvent);
private: private:
TTY* m_tty; TTY* m_tty;
@ -36,13 +35,6 @@ namespace Kernel
uint32_t col = 0; uint32_t col = 0;
uint32_t index = 0; uint32_t index = 0;
} m_cursor_pos; } m_cursor_pos;
struct
{
bool exists = false;
int32_t x = 0;
int32_t y = 0;
} m_mouse_pos;
}; };
} }

13
kernel/include/kernel/TTY.h
View File

@ -1,12 +1,12 @@
#pragma once #pragma once
#include <kernel/VESA.h> #include <kernel/TerminalDriver.h>
#include <kernel/Serial.h> #include <kernel/Serial.h>
class TTY class TTY
{ {
public: public:
TTY(); TTY(TerminalDriver*);
void Clear(); void Clear();
void PutChar(char ch); void PutChar(char ch);
void Write(const char* data, size_t size); void Write(const char* data, size_t size);
@ -31,8 +31,8 @@ private:
private: private:
struct Cell struct Cell
{ {
VESA::Color foreground = VESA::Color::BRIGHT_WHITE; TerminalDriver::Color foreground = TerminalColor::BRIGHT_WHITE;
VESA::Color background = VESA::Color::BLACK; TerminalDriver::Color background = TerminalColor::BLACK;
uint16_t character = ' '; uint16_t character = ' ';
}; };
@ -47,8 +47,9 @@ private:
uint32_t m_height { 0 }; uint32_t m_height { 0 };
uint32_t m_row { 0 }; uint32_t m_row { 0 };
uint32_t m_column { 0 }; uint32_t m_column { 0 };
VESA::Color m_foreground { VESA::Color::BRIGHT_WHITE }; TerminalDriver::Color m_foreground { TerminalColor::BRIGHT_WHITE };
VESA::Color m_background { VESA::Color::BLACK }; TerminalDriver::Color m_background { TerminalColor::BLACK };
Cell* m_buffer { nullptr }; Cell* m_buffer { nullptr };
AnsiState m_ansi_state; AnsiState m_ansi_state;
TerminalDriver* m_terminal_driver { nullptr };
}; };

53
kernel/include/kernel/TerminalDriver.h Normal file
View File

@ -0,0 +1,53 @@
#pragma once
#include <stdint.h>
class TerminalDriver
{
public:
struct Color
{
constexpr Color(uint32_t rgb)
: rgb(rgb)
{ }
constexpr Color(uint8_t r, uint8_t g, uint8_t b)
: rgb(((uint32_t)r << 16) | ((uint32_t)g << 8) | b)
{ }
uint8_t red() const { return (rgb >> 0x10) & 0xFF; }
uint8_t green() const { return (rgb >> 0x08) & 0xFF; }
uint8_t blue() const { return (rgb >> 0x00) & 0xFF; }
uint32_t rgb;
};
public:
virtual ~TerminalDriver() {}
virtual uint32_t Width() const = 0;
virtual uint32_t Height() const = 0;
virtual void PutCharAt(uint16_t, uint32_t, uint32_t, Color, Color) = 0;
virtual void Clear(Color) = 0;
virtual void SetCursorPosition(uint32_t, uint32_t) = 0;
};
namespace TerminalColor
{
static constexpr TerminalDriver::Color BLACK = 0x000000;
static constexpr TerminalDriver::Color BLUE = 0x0000AA;
static constexpr TerminalDriver::Color GREEN = 0x00AA00;
static constexpr TerminalDriver::Color CYAN = 0x00AAAA;
static constexpr TerminalDriver::Color RED = 0xAA0000;
static constexpr TerminalDriver::Color MAGENTA = 0xAA00AA;
static constexpr TerminalDriver::Color YELLOW = 0xAA5500;
static constexpr TerminalDriver::Color WHITE = 0xAAAAAA;
static constexpr TerminalDriver::Color BRIGHT_BLACK = 0x555555;
static constexpr TerminalDriver::Color BRIGHT_BLUE = 0x5555FF;
static constexpr TerminalDriver::Color BRIGHT_GREEN = 0x55FF55;
static constexpr TerminalDriver::Color BRIGHT_CYAN = 0x55FFFF;
static constexpr TerminalDriver::Color BRIGHT_RED = 0xFF5555;
static constexpr TerminalDriver::Color BRIGHT_MAGENTA = 0xFF55FF;
static constexpr TerminalDriver::Color BRIGHT_YELLOW = 0xFFFF55;
static constexpr TerminalDriver::Color BRIGHT_WHITE = 0xFFFFFF;
}

38
kernel/include/kernel/VESA.h
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@ -1,38 +0,0 @@
#pragma once
#include <stdint.h>
namespace VESA
{
enum class Color : uint8_t
{
BLACK = 0,
BLUE = 1,
GREEN = 2,
CYAN = 3,
RED = 4,
MAGENTA = 5,
YELLOW = 6,
WHITE = 7,
BRIGHT_BLACK = 8,
BRIGHT_BLUE = 9,
BRIGHT_GREEN = 10,
BRIGHT_CYAN = 11,
BRIGHT_RED = 12,
BRIGHT_MAGENTA = 13,
BRIGHT_YELLOW = 14,
BRIGHT_WHITE = 15,
};
bool Initialize();
void PutBitmapAt(const uint8_t*, uint32_t, uint32_t, Color);
void PutBitmapAt(const uint8_t*, uint32_t, uint32_t, Color, Color);
void PutCharAt(uint16_t, uint32_t, uint32_t, Color, Color);
void Clear(Color);
void SetCursorPosition(uint32_t, uint32_t, Color);
uint32_t GetTerminalWidth();
uint32_t GetTerminalHeight();
}

41
kernel/include/kernel/VesaTerminalDriver.h Normal file
View File

@ -0,0 +1,41 @@
#pragma once
#include <kernel/font.h>
#include <kernel/TerminalDriver.h>
class VesaTerminalDriver final : public TerminalDriver
{
public:
static VesaTerminalDriver* Create();
~VesaTerminalDriver();
virtual uint32_t Width() const override { return m_width / m_font.Width; }
virtual uint32_t Height() const override { return m_height / m_font.Height; }
virtual void PutCharAt(uint16_t, uint32_t, uint32_t, Color, Color) override;
virtual void Clear(Color) override;
virtual void SetCursorPosition(uint32_t, uint32_t) override;
private:
VesaTerminalDriver(uint32_t width, uint32_t height, uint32_t pitch, uint8_t bpp, uintptr_t address, bitmap_font font)
: m_width(width)
, m_height(height)
, m_pitch(pitch)
, m_bpp(bpp)
, m_address(address)
, m_font(font)
{ }
void SetPixel(uint32_t, Color);
private:
uint32_t m_width = 0;
uint32_t m_height = 0;
uint32_t m_pitch = 0;
uint8_t m_bpp = 0;
uintptr_t m_address = 0;
bitmap_font m_font;
static constexpr Color s_cursor_color = TerminalColor::BRIGHT_WHITE;
};

1
kernel/include/kernel/font.h
View File

@ -1,3 +1,4 @@
#pragma once
// (c) 2009, 2010 Lutz Sammer, License: AGPLv3 // (c) 2009, 2010 Lutz Sammer, License: AGPLv3
/// bitmap font structure /// bitmap font structure

5
kernel/include/kernel/multiboot.h
View File

@ -2,6 +2,11 @@
#include <stdint.h> #include <stdint.h>
#define MULTIBOOT_FLAGS_FRAMEBUFFER (1 << 12)
#define MULTIBOOT_FRAMEBUFFER_TYPE_GRAPHICS 1
#define MULTIBOOT_FRAMEBUFFER_TYPE_TEXT 2
struct framebuffer_info_t struct framebuffer_info_t
{ {
uint64_t addr; uint64_t addr;

32
kernel/kernel/Shell.cpp
View File

@ -22,30 +22,10 @@ namespace Kernel
static auto s_default_prompt = "\\[\e[32m\\]user\\[\e[m\\]# "_sv; static auto s_default_prompt = "\\[\e[32m\\]user\\[\e[m\\]# "_sv;
static uint8_t s_pointer[] {
________,
________,
________,
________,
________,
X_______,
XX______,
XXX_____,
XXXX____,
XXXXX___,
XXXXXX__,
XXXXXXX_,
XXXXXXXX,
XXX_____,
XX______,
X_______,
};
Shell::Shell(TTY* tty) Shell::Shell(TTY* tty)
: m_tty(tty) : m_tty(tty)
{ {
Input::register_key_event_callback({ &Shell::KeyEventCallback, this }); Input::register_key_event_callback({ &Shell::KeyEventCallback, this });
Input::register_mouse_move_event_callback({ &Shell::MouseMoveEventCallback, this });
SetPrompt(s_default_prompt); SetPrompt(s_default_prompt);
MUST(m_buffer.PushBack(""_sv)); MUST(m_buffer.PushBack(""_sv));
} }
@ -415,18 +395,6 @@ argument_done:
} }
TTY_PRINT("\e[{}G", m_prompt_length + m_cursor_pos.col + 1); TTY_PRINT("\e[{}G", m_prompt_length + m_cursor_pos.col + 1);
if (m_mouse_pos.exists)
VESA::PutBitmapAt(s_pointer, m_mouse_pos.x, m_mouse_pos.y, VESA::Color::BRIGHT_WHITE);
}
void Shell::MouseMoveEventCallback(Input::MouseMoveEvent event)
{
m_mouse_pos.exists = true;
m_tty->RenderFromBuffer(m_mouse_pos.x, m_mouse_pos.y);
m_mouse_pos.x = Math::clamp<int32_t>(m_mouse_pos.x + event.dx, 0, m_tty->Width() - 1);
m_mouse_pos.y = Math::clamp<int32_t>(m_mouse_pos.y - event.dy, 0, m_tty->Height() - 1);
VESA::PutBitmapAt(s_pointer, m_mouse_pos.x, m_mouse_pos.y, VESA::Color::BRIGHT_WHITE);
} }
} }

52
kernel/kernel/TTY.cpp
View File

@ -1,7 +1,6 @@
#include <BAN/Errors.h> #include <BAN/Errors.h>
#include <kernel/Serial.h> #include <kernel/Serial.h>
#include <kernel/TTY.h> #include <kernel/TTY.h>
#include <kernel/VESA.h>
#include <string.h> #include <string.h>
@ -21,10 +20,11 @@ template<typename T> inline constexpr T clamp(T x, T a, T b) { return x < a ? a
static TTY* s_tty = nullptr; static TTY* s_tty = nullptr;
TTY::TTY() TTY::TTY(TerminalDriver* driver)
: m_terminal_driver(driver)
{ {
m_width = VESA::GetTerminalWidth(); m_width = m_terminal_driver->Width();
m_height = VESA::GetTerminalHeight(); m_height = m_terminal_driver->Height();
m_buffer = new Cell[m_width * m_height]; m_buffer = new Cell[m_width * m_height];
@ -36,7 +36,7 @@ void TTY::Clear()
{ {
for (uint32_t i = 0; i < m_width * m_height; i++) for (uint32_t i = 0; i < m_width * m_height; i++)
m_buffer[i] = { .foreground = m_foreground, .background = m_background, .character = ' ' }; m_buffer[i] = { .foreground = m_foreground, .background = m_background, .character = ' ' };
VESA::Clear(m_background); m_terminal_driver->Clear(m_background);
} }
void TTY::SetCursorPosition(uint32_t x, uint32_t y) void TTY::SetCursorPosition(uint32_t x, uint32_t y)
@ -45,7 +45,7 @@ void TTY::SetCursorPosition(uint32_t x, uint32_t y)
static uint32_t last_y = -1; static uint32_t last_y = -1;
if (last_x != uint32_t(-1) && last_y != uint32_t(-1)) if (last_x != uint32_t(-1) && last_y != uint32_t(-1))
RenderFromBuffer(last_x, last_y); // Hacky way to clear previous cursor in graphics mode :D RenderFromBuffer(last_x, last_y); // Hacky way to clear previous cursor in graphics mode :D
VESA::SetCursorPosition(x, y, VESA::Color::BRIGHT_WHITE); m_terminal_driver->SetCursorPosition(x, y);
last_x = m_column = x; last_x = m_column = x;
last_y = m_row = y; last_y = m_row = y;
} }
@ -111,27 +111,27 @@ void TTY::HandleAnsiSGR()
{ {
case -1: case -1:
case 0: case 0:
m_foreground = VESA::Color::BRIGHT_WHITE; m_foreground = TerminalColor::BRIGHT_WHITE;
m_background = VESA::Color::BLACK; m_background = TerminalColor::BLACK;
break; break;
case 30: m_foreground = VESA::Color::BRIGHT_BLACK; break; case 30: m_foreground = TerminalColor::BRIGHT_BLACK; break;
case 31: m_foreground = VESA::Color::BRIGHT_RED; break; case 31: m_foreground = TerminalColor::BRIGHT_RED; break;
case 32: m_foreground = VESA::Color::BRIGHT_GREEN; break; case 32: m_foreground = TerminalColor::BRIGHT_GREEN; break;
case 33: m_foreground = VESA::Color::BRIGHT_YELLOW; break; case 33: m_foreground = TerminalColor::BRIGHT_YELLOW; break;
case 34: m_foreground = VESA::Color::BRIGHT_BLUE; break; case 34: m_foreground = TerminalColor::BRIGHT_BLUE; break;
case 35: m_foreground = VESA::Color::BRIGHT_MAGENTA; break; case 35: m_foreground = TerminalColor::BRIGHT_MAGENTA; break;
case 36: m_foreground = VESA::Color::BRIGHT_CYAN; break; case 36: m_foreground = TerminalColor::BRIGHT_CYAN; break;
case 37: m_foreground = VESA::Color::BRIGHT_WHITE; break; case 37: m_foreground = TerminalColor::BRIGHT_WHITE; break;
case 40: m_background = VESA::Color::BRIGHT_BLACK; break; case 40: m_background = TerminalColor::BRIGHT_BLACK; break;
case 41: m_background = VESA::Color::BRIGHT_RED; break; case 41: m_background = TerminalColor::BRIGHT_RED; break;
case 42: m_background = VESA::Color::BRIGHT_GREEN; break; case 42: m_background = TerminalColor::BRIGHT_GREEN; break;
case 43: m_background = VESA::Color::BRIGHT_YELLOW; break; case 43: m_background = TerminalColor::BRIGHT_YELLOW; break;
case 44: m_background = VESA::Color::BRIGHT_BLUE; break; case 44: m_background = TerminalColor::BRIGHT_BLUE; break;
case 45: m_background = VESA::Color::BRIGHT_MAGENTA; break; case 45: m_background = TerminalColor::BRIGHT_MAGENTA; break;
case 46: m_background = VESA::Color::BRIGHT_CYAN; break; case 46: m_background = TerminalColor::BRIGHT_CYAN; break;
case 47: m_background = VESA::Color::BRIGHT_WHITE; break; case 47: m_background = TerminalColor::BRIGHT_WHITE; break;
} }
} }
@ -246,7 +246,7 @@ void TTY::RenderFromBuffer(uint32_t x, uint32_t y)
{ {
ASSERT(x < m_width && y < m_height); ASSERT(x < m_width && y < m_height);
const auto& cell = m_buffer[y * m_width + x]; const auto& cell = m_buffer[y * m_width + x];
VESA::PutCharAt(cell.character, x, y, cell.foreground, cell.background); m_terminal_driver->PutCharAt(cell.character, x, y, cell.foreground, cell.background);
} }
void TTY::PutCharAt(uint16_t ch, uint32_t x, uint32_t y) void TTY::PutCharAt(uint16_t ch, uint32_t x, uint32_t y)
@ -256,7 +256,7 @@ void TTY::PutCharAt(uint16_t ch, uint32_t x, uint32_t y)
cell.character = ch; cell.character = ch;
cell.foreground = m_foreground; cell.foreground = m_foreground;
cell.background = m_background; cell.background = m_background;
VESA::PutCharAt(ch, x, y, m_foreground, m_background); m_terminal_driver->PutCharAt(ch, x, y, m_foreground, m_background);
} }
void TTY::PutChar(char ch) void TTY::PutChar(char ch)

167
kernel/kernel/VesaTerminalDriver.cpp Normal file
View File

@ -0,0 +1,167 @@
#include <BAN/Errors.h>
#include <kernel/MMU.h>
#include <kernel/multiboot.h>
#include <kernel/Serial.h>
#include <kernel/VesaTerminalDriver.h>
extern const struct bitmap_font font;
VesaTerminalDriver* VesaTerminalDriver::Create()
{
if (!(g_multiboot_info->flags & MULTIBOOT_FLAGS_FRAMEBUFFER))
{
dprintln("Bootloader did not provide framebuffer");
return nullptr;
}
auto& framebuffer = g_multiboot_info->framebuffer;
if (framebuffer.type == MULTIBOOT_FRAMEBUFFER_TYPE_GRAPHICS)
{
if (framebuffer.bpp != 24 && framebuffer.bpp != 32)
{
dprintln("Unsupported bpp {}", framebuffer.bpp);
return nullptr;
}
dprintln("Graphics Mode {}x{} ({} bpp)", framebuffer.width, framebuffer.height, framebuffer.bpp);
}
else if (framebuffer.type == MULTIBOOT_FRAMEBUFFER_TYPE_TEXT)
{
dprintln("Text Mode is currently not supported");
return nullptr;
}
else
{
dprintln("Unknown framebuffer type {}", framebuffer.type);
return nullptr;
}
MMU::Get().AllocateRange(framebuffer.addr, framebuffer.pitch * framebuffer.height);
auto* driver = new VesaTerminalDriver(
framebuffer.width,
framebuffer.height,
framebuffer.pitch,
framebuffer.bpp,
framebuffer.addr,
font
);
driver->SetCursorPosition(0, 0);
driver->Clear(TerminalColor::BLACK);
return driver;
}
VesaTerminalDriver::~VesaTerminalDriver()
{
MMU::Get().UnAllocateRange(m_address, m_pitch * m_height);
}
void VesaTerminalDriver::SetPixel(uint32_t offset, Color color)
{
uint32_t* pixel = (uint32_t*)(m_address + offset);
switch (m_bpp)
{
case 24:
*pixel = (*pixel & 0xFF000000) | (color.rgb & 0x00FFFFFF);
break;
case 32:
*pixel = color.rgb;
break;
}
}
void VesaTerminalDriver::PutCharAt(uint16_t ch, uint32_t x, uint32_t y, Color fg, Color bg)
{
uint32_t glyph_index = 0;
for (uint32_t i = 0; i < m_font.Chars; i++)
{
if (m_font.Index[i] == ch)
{
glyph_index = i;
break;
}
}
const uint8_t* glyph = m_font.Bitmap + glyph_index * m_font.Height;
x *= m_font.Width;
y *= m_font.Height;
uint32_t row_offset = y * m_pitch + x * m_bpp / 8;
for (uint32_t dy = 0; dy < m_font.Height && y + dy < m_height; dy++)
{
uint32_t pixel_offset = row_offset;
for (uint32_t dx = 0; dx < m_font.Width && x + dx < m_width; dx++)
{
uint8_t bitmask = 1 << (font.Width - dx - 1);
SetPixel(pixel_offset, glyph[dy] & bitmask ? fg : bg);
pixel_offset += m_bpp / 8;
}
row_offset += m_pitch;
}
}
void VesaTerminalDriver::Clear(Color color)
{
if (m_bpp == 32)
{
uint32_t cells_per_row = m_pitch / 4;
for (uint32_t y = 0; y < m_height; y++)
for (uint32_t x = 0; x < m_width; x++)
((uint32_t*)m_address)[y * cells_per_row + x] = color.rgb;
return;
}
uint32_t row_offset = 0;
for (uint32_t y = 0; y < m_height; y++)
{
uint32_t pixel_offset = row_offset;
for (uint32_t x = 0; x < m_width; x++)
{
SetPixel(pixel_offset, color);
pixel_offset += m_bpp / 8;
}
row_offset += m_pitch;
}
}
void VesaTerminalDriver::SetCursorPosition(uint32_t x, uint32_t y)
{
ASSERT(m_font.Height == 16 && m_font.Width == 8);
constexpr uint8_t cursor[] = {
________,
________,
________,
________,
________,
________,
________,
________,
________,
________,
________,
________,
________,
XXXXXXXX,
XXXXXXXX,
________,
};
x *= m_font.Width;
y *= m_font.Height;
uint32_t row_offset = y * m_pitch + x * m_bpp / 8;
for (uint32_t dy = 0; dy < m_font.Height && y + dy < m_height; dy++)
{
uint32_t pixel_offset = row_offset;
for (uint32_t dx = 0; dx < m_font.Width && x + dx < m_width; dx++)
{
uint8_t bitmask = 1 << (font.Width - dx - 1);
if (cursor[dy] & bitmask)
SetPixel(pixel_offset, s_cursor_color);
pixel_offset += m_bpp / 8;
}
row_offset += m_pitch;
}
}

8
kernel/kernel/kernel.cpp
View File

@ -13,7 +13,7 @@
#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> #include <kernel/VesaTerminalDriver.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")
@ -76,10 +76,10 @@ extern "C" void kernel_main()
MMU::Intialize(); MMU::Intialize();
dprintln("MMU initialized"); dprintln("MMU initialized");
if (!VESA::Initialize()) TerminalDriver* terminal_driver = VesaTerminalDriver::Create();
return; ASSERT(terminal_driver);
dprintln("VESA initialized"); dprintln("VESA initialized");
TTY* tty1 = new TTY; TTY* tty1 = new TTY(terminal_driver);
APIC::Initialize(cmdline.force_pic); APIC::Initialize(cmdline.force_pic);
dprintln("APIC initialized"); dprintln("APIC initialized");