diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/Makefile | 37 | ||||
| -rw-r--r-- | kernel/include/debug.h | 8 | ||||
| -rw-r--r-- | kernel/include/font.h | 369 | ||||
| -rw-r--r-- | kernel/include/graphics.h | 34 | ||||
| -rw-r--r-- | kernel/include/idt.h | 34 | ||||
| -rw-r--r-- | kernel/include/io.h | 9 | ||||
| -rw-r--r-- | kernel/include/irq.h | 58 | ||||
| -rw-r--r-- | kernel/include/keyboard.h | 9 | ||||
| -rw-r--r-- | kernel/include/multiboot2.h | 40 | ||||
| -rw-r--r-- | kernel/include/pic.h | 30 | ||||
| -rw-r--r-- | kernel/src/boot/boot.S (renamed from kernel/boot.S) | 0 | ||||
| -rw-r--r-- | kernel/src/boot/boot64.S (renamed from kernel/boot64.S) | 0 | ||||
| -rw-r--r-- | kernel/src/boot/header.S (renamed from kernel/header.S) | 0 | ||||
| -rw-r--r-- | kernel/src/boot/multiboot2.c (renamed from kernel/multiboot2.c) | 0 | ||||
| -rw-r--r-- | kernel/src/cpu/idt.c (renamed from kernel/idt.c) | 0 | ||||
| -rw-r--r-- | kernel/src/cpu/io.c (renamed from kernel/io.c) | 0 | ||||
| -rw-r--r-- | kernel/src/cpu/irq.c (renamed from kernel/irq.c) | 0 | ||||
| -rw-r--r-- | kernel/src/cpu/irq_stub.S (renamed from kernel/irq_stub.S) | 0 | ||||
| -rw-r--r-- | kernel/src/cpu/pic.c (renamed from kernel/pic.c) | 0 | ||||
| -rw-r--r-- | kernel/src/devices/keyboard.c (renamed from kernel/keyboard.c) | 0 | ||||
| -rw-r--r-- | kernel/src/grub.cfg (renamed from kernel/grub.cfg) | 0 | ||||
| -rw-r--r-- | kernel/src/kernel.ld (renamed from kernel/kernel.ld) | 0 | ||||
| -rw-r--r-- | kernel/src/main.c (renamed from kernel/main.c) | 0 | ||||
| -rw-r--r-- | kernel/src/misc/debug.c (renamed from kernel/debug.c) | 0 | ||||
| -rw-r--r-- | kernel/src/misc/graphics.c (renamed from kernel/graphics.c) | 0 |
25 files changed, 628 insertions, 0 deletions
diff --git a/kernel/Makefile b/kernel/Makefile new file mode 100644 index 0000000..8bdb9f7 --- /dev/null +++ b/kernel/Makefile @@ -0,0 +1,37 @@ +CFLAGS += -I include + +OBJS = \ + src/boot/boot64.o \ + src/boot/boot.o \ + src/boot/header.o \ + src/boot/multiboot2.o \ + src/cpu/idt.o \ + src/cpu/io.o \ + src/cpu/irq.o \ + src/cpu/irq_stub.o \ + src/cpu/pic.o \ + src/devices/keyboard.o \ + src/main.o \ + src/misc/debug.o \ + src/misc/graphics.o \ + +all: kernel.bin + +kernel.bin: $(OBJS) src/kernel.ld ../Makefile Makefile + $(info [kernel] $@) + @$(LD) $(LDFLAGS) -T src/kernel.ld $(OBJS) -o kernel.bin + + +%.o: %.c + $(info [kernel] $@) + @$(CC) $(CFLAGS) -c $< -o $@ + + +%.o: %.S + $(info [kernel] $@) + @$(CC) $(CFLAGS) -c $< -o $@ + + +.PHONY: all + +-include $(OBJS:.o=.d) diff --git a/kernel/include/debug.h b/kernel/include/debug.h new file mode 100644 index 0000000..ebe3a52 --- /dev/null +++ b/kernel/include/debug.h @@ -0,0 +1,8 @@ +#ifndef DEBUG_H +#define DEBUG_H + +#include <stdint.h> + +void bochs_breakpoint(void); + +#endif diff --git a/kernel/include/font.h b/kernel/include/font.h new file mode 100644 index 0000000..678a6c2 --- /dev/null +++ b/kernel/include/font.h @@ -0,0 +1,369 @@ +#ifndef FONT_H +#define FONT_H + +#include <stdint.h> + +#define PSF_FONT_MAGIC 0x864ab572 + +typedef struct { + uint32_t magic; /* magic bytes to identify PSF */ + uint32_t version; /* zero */ + uint32_t headersize; /* offset of bitmaps in file, 32 */ + uint32_t flags; /* 0 if there's no unicode table */ + uint32_t numglyph; /* number of glyphs */ + uint32_t bytesperglyph; /* size of each glyph */ + uint32_t height; /* height in pixels */ + uint32_t width; /* width in pixels */ +} PSF_font; + +/* font i used: /usr/share/kbd/consolefonts/lat9-16.psf.gz */ +/* xxd -i font.psf */ + +#endif +unsigned char font[] = { + 0x72, 0xb5, 0x4a, 0x86, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, + 0x10, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0xc3, + 0x99, 0x99, 0xf3, 0xe7, 0xe7, 0xff, 0xe7, 0xe7, 0x7e, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x76, 0xdc, 0x00, 0x76, 0xdc, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6e, 0xf8, 0xd8, 0xd8, 0xdc, 0xd8, + 0xd8, 0xd8, 0xf8, 0x6e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x6e, 0xdb, 0xdb, 0xdf, 0xd8, 0xdb, 0x6e, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x10, 0x38, 0x7c, 0xfe, 0x7c, 0x38, 0x10, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x88, 0xf8, 0x88, 0x88, 0x00, 0x3e, + 0x08, 0x08, 0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x80, 0xe0, + 0x80, 0x80, 0x00, 0x3e, 0x20, 0x38, 0x20, 0x20, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x70, 0x88, 0x80, 0x88, 0x70, 0x00, 0x3c, 0x22, 0x3c, 0x24, 0x22, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, 0x80, 0xf8, 0x00, 0x3e, + 0x20, 0x38, 0x20, 0x20, 0x00, 0x00, 0x00, 0x00, 0x11, 0x44, 0x11, 0x44, + 0x11, 0x44, 0x11, 0x44, 0x11, 0x44, 0x11, 0x44, 0x11, 0x44, 0x11, 0x44, + 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, + 0x55, 0xaa, 0x55, 0xaa, 0xdd, 0x77, 0xdd, 0x77, 0xdd, 0x77, 0xdd, 0x77, + 0xdd, 0x77, 0xdd, 0x77, 0xdd, 0x77, 0xdd, 0x77, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0xf0, 0xf0, 0xf0, + 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, + 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, + 0x0f, 0x0f, 0x0f, 0x0f, 0x00, 0x88, 0xc8, 0xa8, 0x98, 0x88, 0x00, 0x20, + 0x20, 0x20, 0x20, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x88, 0x50, + 0x50, 0x20, 0x00, 0x3e, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x0e, 0x38, 0xe0, 0x38, 0x0e, 0x00, 0xfe, 0x00, + 0x00, 0x00, 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0x00, 0x00, 0x00, 0x00, + 0x00, 0x0c, 0x18, 0x30, 0x00, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0x7e, + 0x06, 0x0c, 0xf8, 0x00, 0x00, 0x00, 0xf0, 0x60, 0x60, 0x7c, 0x66, 0x66, + 0x66, 0x66, 0x7c, 0x60, 0x60, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6c, + 0x00, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0x7e, 0x06, 0x0c, 0xf8, 0x00 +}; +unsigned int font_len = 4128; diff --git a/kernel/include/graphics.h b/kernel/include/graphics.h new file mode 100644 index 0000000..84505d8 --- /dev/null +++ b/kernel/include/graphics.h @@ -0,0 +1,34 @@ +#ifndef GRAPHICS_H +#define GRAPHICS_H + +#include <stdint.h> + +struct fb_t { + uint64_t addr; + uint32_t pitch; + uint32_t width; + uint32_t height; + uint8_t bpp; + uint8_t type; +} __attribute__((packed, aligned(8))); +typedef struct fb_t fb_t; + +extern fb_t fb; + +#define RED 0x00ff0000 +#define GREEN 0x0000ff00 +#define BLUE 0x000000ff +#define YELLOW 0x00ffff00 +#define PURPLE 0x00ff00ff +#define WHITE 0x00ffffff +#define BLACK 0x00000000 + +uint64_t* pixel_offset(fb_t fb, uint32_t x, uint32_t y); +void fb_draw_pixel(fb_t fb, uint32_t x, uint32_t y, uint32_t col); +void fb_draw_line_low(fb_t fb, uint32_t x0, uint32_t y0, uint32_t x1, uint32_t y1, uint32_t col); +void fb_draw_line_high(fb_t fb, int32_t x0, int32_t y0, int32_t x1, int32_t y1, int32_t col); +void fb_draw_line(fb_t fb, int32_t x0, int32_t y0, int32_t x1, int32_t y1, int32_t col); +void fb_draw_character(fb_t fb, char c, uint32_t x, uint32_t y, uint32_t char_col, uint32_t bg_col); +void fb_draw_string(fb_t fb, const char* str, uint32_t x, uint32_t y, uint32_t char_col, uint32_t bg_col); + +#endif diff --git a/kernel/include/idt.h b/kernel/include/idt.h new file mode 100644 index 0000000..9ca9c3a --- /dev/null +++ b/kernel/include/idt.h @@ -0,0 +1,34 @@ +#ifndef IDT_H +#define IDT_H + +#include <stdint.h> + +#define GDT_CODE_SEG 0x08 + +#define INTERRUPT_GATE 0x8E +#define TRAP_GATE 0x8F + +struct idt_entry { + uint16_t offset_1; // offset bits 0..15 + uint16_t selector; // a code segment selector in GDT or LDT + uint8_t ist; // bits 0..2 holds Interrupt Stack Table offset, rest of bits zero. + uint8_t type_attributes; // gate type, dpl, and p fields + uint16_t offset_2; // offset bits 16..31 + uint32_t offset_3; // offset bits 32..63 + uint32_t zero; // reserved +} __attribute__((packed)); +typedef struct idt_entry idt_entry; + +struct idtp { + uint16_t size; + uint64_t offset; +} __attribute__((packed)); +typedef struct idtp idtp; + +void init_idt(void); +void load_idt(idtp* pointer); +void init_idt_table(void); +void add_to_idt(uint16_t num, uint64_t offset, uint16_t selector, uint8_t type); + + +#endif diff --git a/kernel/include/io.h b/kernel/include/io.h new file mode 100644 index 0000000..76c401d --- /dev/null +++ b/kernel/include/io.h @@ -0,0 +1,9 @@ +#ifndef IO_H +#define IO_H + +#include <stdint.h> + +uint8_t inb(uint32_t port); +void outb(uint32_t port, uint8_t value); + +#endif diff --git a/kernel/include/irq.h b/kernel/include/irq.h new file mode 100644 index 0000000..f0e38d6 --- /dev/null +++ b/kernel/include/irq.h @@ -0,0 +1,58 @@ +#ifndef IRQ_H +#define IRQ_H + +#include <stdint.h> + +// exceptions +void isr0(void); +void isr1(void); +void isr2(void); +void isr3(void); +void isr4(void); +void isr5(void); +void isr6(void); +void isr7(void); +void isr8(uint64_t error); +void isr9(void); +void isr10(uint64_t error); +void isr11(uint64_t error); +void isr12(uint64_t error); +void isr13(uint64_t error); +void isr14(uint64_t error); +void isr15(void); +void isr16(void); +void isr17(uint64_t error); +void isr18(void); +void isr19(void); +void isr20(void); +void isr21(uint64_t error); +void isr22(void); +void isr23(void); +void isr24(void); +void isr25(void); +void isr26(void); +void isr27(void); +void isr28(void); +void isr29(uint64_t error); +void isr30(uint64_t error); +void isr31(void); + +// interrupts +void irq0(void); +void irq1(void); +void irq2(void); +void irq3(void); +void irq4(void); +void irq5(void); +void irq6(void); +void irq7(void); +void irq8(void); +void irq9(void); +void irq10(void); +void irq11(void); +void irq12(void); +void irq13(void); +void irq14(void); +void irq15(void); + +#endif diff --git a/kernel/include/keyboard.h b/kernel/include/keyboard.h new file mode 100644 index 0000000..3a1b7f1 --- /dev/null +++ b/kernel/include/keyboard.h @@ -0,0 +1,9 @@ +#ifndef KEYBOARD_H +#define KEYBOARD_H + +#define KEYBOARD_DATA_PORT 0x60 +#define KEYBOARD_STATUS_PORT 0x64 + +void keyboard_handler(void); + +#endif diff --git a/kernel/include/multiboot2.h b/kernel/include/multiboot2.h new file mode 100644 index 0000000..f22fd8e --- /dev/null +++ b/kernel/include/multiboot2.h @@ -0,0 +1,40 @@ +#ifndef MULTIBOOT2_H +#define MULTIBOOT2_H + +#include <stdint.h> + +struct mb2_tag_header { + uint32_t type; + uint32_t size; +} __attribute__((packed, aligned(8))); +typedef struct mb2_tag_header mb2_tag_header; + +struct mb2_tag_fb { + uint32_t type; + uint32_t size; + uint64_t framebuffer_addr; + uint32_t framebuffer_pitch; + uint32_t framebuffer_width; + uint32_t framebuffer_height; + uint8_t framebuffer_bpp; + uint8_t framebuffer_type; +} __attribute__((packed, aligned(8))); +typedef struct mb2_tag_fb mb2_tag_fb; + +// multiboot2 magic check +#define MB2_MAGIC 0x36D76289 + +// multiboot2 tag +#define MB2_TAG_END 0 +#define MB2_TAG_CMDLINE 1 +#define MB2_TAG_BOOTLOADER 2 +#define MB2_TAG_MODULES 3 +#define MB2_TAG_MEM 4 +#define MB2_TAG_BIOS 5 +#define MB2_TAG_MMAP 6 +#define MB2_TAG_VBE 7 +#define MB2_TAG_FB 8 + +void init_fb(mb2_tag_header* multiboot_bootinfo, uint32_t multiboot_magic); + +#endif diff --git a/kernel/include/pic.h b/kernel/include/pic.h new file mode 100644 index 0000000..f1f4e44 --- /dev/null +++ b/kernel/include/pic.h @@ -0,0 +1,30 @@ +#ifndef PIC_H +#define PIC_H + +#define PIC1 0x20 /* IO base address for master PIC */ +#define PIC2 0xA0 /* IO base address for slave PIC */ +#define PIC1_COMMAND PIC1 +#define PIC1_DATA (PIC1+1) +#define PIC2_COMMAND PIC2 +#define PIC2_DATA (PIC2+1) + +#define PIC_EOI 0x20 /* End-of-interrupt command code */ + +/* reinitialize the PIC controllers, giving them specified vector offsets + rather than 8h and 70h, as configured by default */ + +#define ICW1_ICW4 0x01 /* ICW4 (not) needed */ +#define ICW1_SINGLE 0x02 /* Single (cascade) mode */ +#define ICW1_INTERVAL4 0x04 /* Call address interval 4 (8) */ +#define ICW1_LEVEL 0x08 /* Level triggered (edge) mode */ +#define ICW1_INIT 0x10 /* Initialization - required! */ + +#define ICW4_8086 0x01 /* 8086/88 (MCS-80/85) mode */ +#define ICW4_AUTO 0x02 /* Auto (normal) EOI */ +#define ICW4_BUF_SLAVE 0x08 /* Buffered mode/slave */ +#define ICW4_BUF_MASTER 0x0C /* Buffered mode/master */ +#define ICW4_SFNM 0x10 /* Special fully nested (not) */ + +void remap_pic(void); + +#endif diff --git a/kernel/boot.S b/kernel/src/boot/boot.S index ee35eeb..ee35eeb 100644 --- a/kernel/boot.S +++ b/kernel/src/boot/boot.S diff --git a/kernel/boot64.S b/kernel/src/boot/boot64.S index be87412..be87412 100644 --- a/kernel/boot64.S +++ b/kernel/src/boot/boot64.S diff --git a/kernel/header.S b/kernel/src/boot/header.S index bbcb9be..bbcb9be 100644 --- a/kernel/header.S +++ b/kernel/src/boot/header.S diff --git a/kernel/multiboot2.c b/kernel/src/boot/multiboot2.c index e228ce1..e228ce1 100644 --- a/kernel/multiboot2.c +++ b/kernel/src/boot/multiboot2.c diff --git a/kernel/idt.c b/kernel/src/cpu/idt.c index bf285b7..bf285b7 100644 --- a/kernel/idt.c +++ b/kernel/src/cpu/idt.c diff --git a/kernel/io.c b/kernel/src/cpu/io.c index 6bf67d0..6bf67d0 100644 --- a/kernel/io.c +++ b/kernel/src/cpu/io.c diff --git a/kernel/irq.c b/kernel/src/cpu/irq.c index 1e02f23..1e02f23 100644 --- a/kernel/irq.c +++ b/kernel/src/cpu/irq.c diff --git a/kernel/irq_stub.S b/kernel/src/cpu/irq_stub.S index ddd197a..ddd197a 100644 --- a/kernel/irq_stub.S +++ b/kernel/src/cpu/irq_stub.S diff --git a/kernel/pic.c b/kernel/src/cpu/pic.c index 801556d..801556d 100644 --- a/kernel/pic.c +++ b/kernel/src/cpu/pic.c diff --git a/kernel/keyboard.c b/kernel/src/devices/keyboard.c index 105c3a8..105c3a8 100644 --- a/kernel/keyboard.c +++ b/kernel/src/devices/keyboard.c diff --git a/kernel/grub.cfg b/kernel/src/grub.cfg index 05a13f7..05a13f7 100644 --- a/kernel/grub.cfg +++ b/kernel/src/grub.cfg diff --git a/kernel/kernel.ld b/kernel/src/kernel.ld index da5c87c..da5c87c 100644 --- a/kernel/kernel.ld +++ b/kernel/src/kernel.ld diff --git a/kernel/main.c b/kernel/src/main.c index 96f3572..96f3572 100644 --- a/kernel/main.c +++ b/kernel/src/main.c diff --git a/kernel/debug.c b/kernel/src/misc/debug.c index 5f3c327..5f3c327 100644 --- a/kernel/debug.c +++ b/kernel/src/misc/debug.c diff --git a/kernel/graphics.c b/kernel/src/misc/graphics.c index d4fc7c7..d4fc7c7 100644 --- a/kernel/graphics.c +++ b/kernel/src/misc/graphics.c |
