Kernel: Add prefs font for terminal output before file system

kernel/Makefile

@@ -31,6 +31,7 @@ BUILDDIR=$(abspath build)
  
 KERNEL_OBJS=					\
 $(KERNEL_ARCH_OBJS)				\
+font/prefs.o					\
 kernel/APIC.o					\
 kernel/ATA.o					\
 kernel/build_libc.o				\
@@ -74,7 +75,7 @@ $(ARCHDIR)/crtend.o		\
 $(ARCHDIR)/crtn.o		\
  
 .PHONY: all always clean install install-headers install-kernel
-.SUFFIXES: .o .c .cpp .S
+.SUFFIXES: .o .c .cpp .S .psf
  
 all: banan-os.kernel
  
@@ -94,10 +95,14 @@ $(ARCHDIR)/crtbegin.o $(ARCHDIR)/crtend.o:
 .S.o:
 	$(CC) -MD -c $< -o $(BUILDDIR)/$@ $(CFLAGS)
  
+.psf.o:
+	objcopy -O elf64-x86-64 -B i386 -I binary $< $(BUILDDIR)/$@
+
 always:
 	mkdir -p $(BUILDDIR)/$(ARCHDIR)
 	mkdir -p $(BUILDDIR)/kernel
 	mkdir -p $(BUILDDIR)/kernel/FS
+	mkdir -p $(BUILDDIR)/font
 
 clean:
 	rm -rf $(BUILDDIR)

kernel/include/kernel/Font.h

@@ -10,6 +10,7 @@ namespace Kernel
 	{
 	public:
 		static BAN::ErrorOr<Font> load(BAN::StringView);
+		static BAN::ErrorOr<Font> prefs();
 
 		uint32_t width() const { return m_width; }
 		uint32_t height() const { return m_height; }

kernel/include/kernel/TerminalDriver.h

@@ -22,7 +22,7 @@ public:
 	};
 
 public:
-	TerminalDriver(const Kernel::Font& font) : m_font(font) {}
+	TerminalDriver() : m_font(MUST(Kernel::Font::prefs())) {}
 	virtual ~TerminalDriver() {}
 	virtual uint32_t width() const = 0;
 	virtual uint32_t height() const = 0;

kernel/include/kernel/VesaTerminalDriver.h

@@ -5,7 +5,7 @@
 class VesaTerminalDriver final : public TerminalDriver
 {
 public:
-	static VesaTerminalDriver* create(const Kernel::Font&);
+	static VesaTerminalDriver* create();
 	~VesaTerminalDriver();
 
 	virtual uint32_t width() const override { return m_width / font().width(); }
@@ -17,9 +17,8 @@ public:
 	virtual void set_cursor_position(uint32_t, uint32_t) override;
 
 private:
-	VesaTerminalDriver(uint32_t width, uint32_t height, uint32_t pitch, uint8_t bpp, uintptr_t address, const Kernel::Font& font)
-		: TerminalDriver(font)
-		, m_width(width)
+	VesaTerminalDriver(uint32_t width, uint32_t height, uint32_t pitch, uint8_t bpp, uintptr_t address)
+		: m_width(width)
 		, m_height(height)
 		, m_pitch(pitch)
 		, m_bpp(bpp)

kernel/kernel/Font.cpp

@@ -8,9 +8,21 @@
 
 #define PSF2_HAS_UNICODE_TABLE	0x00000001
 
+extern char _binary_font_prefs_psf_start;
+extern char _binary_font_prefs_psf_end;
+
 namespace Kernel
 {
 
+	BAN::ErrorOr<Font> Font::prefs()
+	{
+		size_t font_data_size = &_binary_font_prefs_psf_end - &_binary_font_prefs_psf_start;
+		BAN::Vector<uint8_t> font_data;
+		TRY(font_data.resize(font_data_size));
+		memcpy(font_data.data(), &_binary_font_prefs_psf_start, font_data_size);
+		return parse_psf1(font_data);
+	}
+
 	BAN::ErrorOr<Font> Font::load(BAN::StringView path)
 	{
 		if (!VirtualFileSystem::is_initialized())

kernel/kernel/VesaTerminalDriver.cpp

@@ -4,7 +4,7 @@
 #include <kernel/multiboot.h>
 #include <kernel/VesaTerminalDriver.h>
 
-VesaTerminalDriver* VesaTerminalDriver::create(const Kernel::Font& font)
+VesaTerminalDriver* VesaTerminalDriver::create()
 {
 	if (!(g_multiboot_info->flags & MULTIBOOT_FLAGS_FRAMEBUFFER))
 	{
@@ -41,8 +41,7 @@ VesaTerminalDriver* VesaTerminalDriver::create(const Kernel::Font& font)
 		framebuffer.height,
 		framebuffer.pitch,
 		framebuffer.bpp,
-		framebuffer.addr,
-		font
+		framebuffer.addr
 	);
 	driver->set_cursor_position(0, 0);
 	driver->clear(TerminalColor::BLACK);

kernel/kernel/kernel.cpp

@@ -81,10 +81,10 @@ extern "C" void kernel_main()
 	MMU::intialize();
 	dprintln("MMU initialized");
 
-	//TerminalDriver* terminal_driver = VesaTerminalDriver::create();
-	//ASSERT(terminal_driver);
-	//dprintln("VESA initialized");
-	//TTY* tty1 = new TTY(terminal_driver);
+	TerminalDriver* terminal_driver = VesaTerminalDriver::create();
+	ASSERT(terminal_driver);
+	dprintln("VESA initialized");
+	TTY* tty1 = new TTY(terminal_driver);
 	
 	InterruptController::initialize(cmdline.force_pic);
 	dprintln("Interrupt controller initialized");
@@ -99,15 +99,24 @@ extern "C" void kernel_main()
 	Scheduler::initialize();
 	Scheduler& scheduler = Scheduler::get();
 	MUST(scheduler.add_thread(BAN::Function<void()>(
-		[]
+		[terminal_driver]
 		{
 			DiskIO::initialize();
 			dprintln("Disk IO initialized");
 
-			auto font = MUST(Font::load("/usr/share/fonts/zap-ext-vga16.psf"));
-			dprintln("Font loaded");
-
-			Shell(new TTY(VesaTerminalDriver::create(font))).run();
+			auto font_or_error = Font::load("/usr/share/fonts/zap-ext-vga16.psf");
+			if (font_or_error.is_error())
+				dprintln("{}", font_or_error.error());
+			else
+				terminal_driver->set_font(font_or_error.release_value());
+		}
+	)));
+	MUST(scheduler.add_thread(BAN::Function<void()>(
+		[tty1]
+		{
+			Shell* shell = new Shell(tty1);
+			ASSERT(shell);
+			shell->run();
 		}
 	)));
 	scheduler.start();