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-rw-r--r--OBJ1
-rw-r--r--drivers/gfx.c78
-rw-r--r--drivers/include/gfx.h3
-rw-r--r--drivers/include/ps2.h2
-rw-r--r--drivers/ps2.c32
-rw-r--r--kernel/irq.c1
-rw-r--r--kernel/isr.c3
-rw-r--r--kernel/main.c38
-rw-r--r--libc/include/stdio.h2
-rw-r--r--libc/include/string.h1
-rw-r--r--libc/string.c7
11 files changed, 149 insertions, 19 deletions
diff --git a/OBJ b/OBJ
index fbceaf2..6eadd24 100644
--- a/OBJ
+++ b/OBJ
@@ -1,5 +1,6 @@
boot/head.o
drivers/gfx.o
+drivers/gfx_font.o
drivers/pcspkr.o
drivers/ps2.o
drivers/tty.o
diff --git a/drivers/gfx.c b/drivers/gfx.c
index 538dadb..38a6591 100644
--- a/drivers/gfx.c
+++ b/drivers/gfx.c
@@ -1,5 +1,9 @@
+#include <stdbool.h>
#include <stddef.h>
+#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
+#include "gfx_font.h"
#include "log.h"
#include "multiboot.h"
#include "panic.h"
@@ -8,6 +12,7 @@
static uint8_t *framebuffer = NULL;
static uint16_t fb_width;
static uint16_t fb_height;
+
/* this is BYTES per pixel */
static uint8_t fb_bpp;
@@ -30,13 +35,82 @@ void gfx_clear(uint32_t col)
}
}
-void gfx_init(struct vbe_info_t *vbe_mode_info)
+void gfx_drawchar(int x, int y, char c, uint32_t fg, uint32_t bg)
+{
+ int stride = fb_bpp * fb_width;
+ uint8_t *line_addr = framebuffer + (x * fb_bpp) + (y * fb_width * fb_bpp);
+ for(int i = y; i < y + FONT_HEIGHT; ++i)
+ {
+ uint32_t line_buf[8] = {bg};
+ uint8_t mask = 0x80;
+ for(int j = 0; j < 8; ++j, mask >>= 1)
+ {
+ if(gfx_font[(int)c][i] & mask)
+ line_buf[j] = fg;
+ }
+ memcpy(line_addr, line_buf, sizeof(line_buf));
+ line_addr += stride;
+ }
+}
+
+static int cursor_x, cursor_y;
+static uint32_t fgcol, bgcol;
+
+void gfx_putchar(char ch)
+{
+ if(ch != '\n')
+ {
+ gfx_drawchar(cursor_x, cursor_y, ch, fgcol, bgcol);
+ cursor_x += FONT_WIDTH;
+ if(cursor_x >= fb_width)
+ {
+ cursor_x = 0;
+ cursor_y += FONT_HEIGHT;
+ if(cursor_y >= fb_height)
+ {
+ gfx_clear(bgcol);
+ cursor_y = 0;
+ }
+ }
+ }
+ else
+ {
+ cursor_x = 0;
+ cursor_y += FONT_HEIGHT;
+ if(cursor_y >= fb_height)
+ {
+ gfx_clear(bgcol);
+ cursor_y = 0;
+ }
+ }
+}
+
+void gfx_puts(const char* str)
+{
+ while(*str)
+ {
+ gfx_putchar(*str++);
+ }
+}
+
+bool gfx_init(struct vbe_info_t *vbe_mode_info)
{
framebuffer = (uint8_t*)vbe_mode_info->physbase;
fb_width = vbe_mode_info->Xres;
fb_height = vbe_mode_info->Yres;
fb_bpp = vbe_mode_info->bpp / 8;
if(fb_bpp != 4)
- panic("BPP *MUST* be 32!!!\n");
+ {
+ printf("WARNING: BPP != 32, falling back to text mode...\n");
+ return false;
+ }
gfx_clear(VGA_RGBPACK(0, 0, 0));
+ cursor_y = 0;
+ cursor_x = 0;
+ fgcol = VGA_RGBPACK(0xff, 0xff, 0xff);
+ bgcol = VGA_RGBPACK(0, 0, 0);
+ set_putchar(gfx_putchar);
+ set_puts(gfx_puts);
+
+ return true;
}
diff --git a/drivers/include/gfx.h b/drivers/include/gfx.h
index bafd7a3..19019a9 100644
--- a/drivers/include/gfx.h
+++ b/drivers/include/gfx.h
@@ -1,3 +1,4 @@
+#include <stdbool.h>
#include <stdint.h>
enum vga_color_t {
@@ -31,7 +32,7 @@ enum vga_color_t {
struct vbe_info_t;
-void gfx_init(struct vbe_info_t *vbe_mode_info);
+bool gfx_init(struct vbe_info_t *vbe_mode_info);
void gfx_drawpixel(int x, int y, uint32_t color);
diff --git a/drivers/include/ps2.h b/drivers/include/ps2.h
index 924ef24..6f2c572 100644
--- a/drivers/include/ps2.h
+++ b/drivers/include/ps2.h
@@ -1,3 +1,5 @@
+/* this is both a PS/2 keyboard AND a PS/2 MOUSE driver */
+
#include <stdint.h>
#define PS2_SCROLL_LOCK (1 << 0)
diff --git a/drivers/ps2.c b/drivers/ps2.c
index b9a9b20..742b7ad 100644
--- a/drivers/ps2.c
+++ b/drivers/ps2.c
@@ -1,3 +1,4 @@
+/* this is both a PS/2 keyboard AND a PS/2 MOUSE driver */
#include <stdint.h>
#include <stdio.h>
#include "io.h"
@@ -18,7 +19,7 @@ void ps2_set_leds(uint8_t status)
outb(0x60, status);
}
-static void ps2_handler(struct regs_t regs)
+static void key_handler(struct regs_t regs)
{
(void) regs;
uint8_t scancode = inb(0x60);
@@ -33,8 +34,33 @@ static void ps2_set_scancode_set(uint8_t set)
outb(0x60, set);
}
-void ps2_init(void)
+static void keyboard_init(void)
{
- set_interrupt_handler(IRQ(1), ps2_handler);
+ set_interrupt_handler(IRQ(1), key_handler);
ps2_set_scancode_set(1);
}
+
+static void mouse_handler(struct regs_t regs)
+{
+ printf("mouse action!\n");
+}
+
+static void mouse_init(void)
+{
+ /* enable IRQ12 */
+ set_interrupt_handler(IRQ(12), mouse_handler);
+ /* make the ps/2 controller generate IRQ12 */
+ outb(0x64, 0x20);
+ uint8_t status = inb(0x64);
+ /* set bit 1 and unset bit 5 */
+ status |= (1 << 1);
+ status &= ~(1 << 5);
+ outb(0x64, 0x60);
+ outb(0x60, status);
+}
+
+void ps2_init(void)
+{
+ keyboard_init();
+ mouse_init();
+}
diff --git a/kernel/irq.c b/kernel/irq.c
index d98ecda..aa726d9 100644
--- a/kernel/irq.c
+++ b/kernel/irq.c
@@ -26,7 +26,6 @@ void irq_remap(void)
void irq_init(void)
{
irq_remap();
- printf("IRQ handlers installed.\n");
idt_set_gate(32, (uint32_t)_irq0, 0x08, 0x8E);
idt_set_gate(33, (uint32_t)_irq1, 0x08, 0x8E);
idt_set_gate(34, (uint32_t)_irq2, 0x08, 0x8E);
diff --git a/kernel/isr.c b/kernel/isr.c
index cb59603..569ecd0 100644
--- a/kernel/isr.c
+++ b/kernel/isr.c
@@ -19,13 +19,12 @@ void isr_handler(struct regs_t regs)
}
else
{
- printf("WARNING: unhandled ISR!\n");
+ printf("WARNING: unhandled ISR 0x%x!\n", regs.int_no);
}
}
void isr_init(void)
{
- printf("ISR handlers installed.\n");
idt_set_gate(0, (uint32_t)_isr0, 0x08, 0x8E);
idt_set_gate(1, (uint32_t)_isr1, 0x08, 0x8E);
idt_set_gate(2, (uint32_t)_isr2, 0x08, 0x8E);
diff --git a/kernel/main.c b/kernel/main.c
index 6cad670..e4cf47d 100644
--- a/kernel/main.c
+++ b/kernel/main.c
@@ -20,11 +20,22 @@ void main(struct multiboot_info_t *hdr, uint32_t magic)
printf("Testing early I/O\n");
printf("GFX init\n");
- int gfx_status = gfx_init((struct vbe_info_t*)hdr->vbe_mode_info);
+ bool gfx_status = gfx_init((struct vbe_info_t*)hdr->vbe_mode_info);
+
+ puts("test123\n");
+ putchar('1');
+ putchar('2');
+ putchar('\n');
+ putchar('1');
+ putchar('2');
+ gfx_drawchar(0, 12, 'a', 0xffffff, 0);
/* if graphical initialization fails, fall back to text mode */
if(!gfx_status)
+ {
tty_init();
+ printf("Graphics init failed, fell back to text mode.\n");
+ }
if(magic != 0x2BADB002)
{
@@ -45,21 +56,30 @@ void main(struct multiboot_info_t *hdr, uint32_t magic)
asm("sti");
- printf("Boot finished.\n");
+ //printf("Boot finished.\n");
- printf("Testing RNG...\n");
+ //printf("Testing RNG...\n");
srand(*current_tick);
- for(int i=0;i>=0;++i)
+ if(gfx_status)
{
- int rx = rand() % *gfx_width;
- int ry = rand() % *gfx_height;
+ /*
+ for(int i=0;i<100000;++i)
+ {
+ int rx = rand() % *gfx_width;
+ int ry = rand() % *gfx_height;
- gfx_drawpixel(rx, ry, rand() % 0xFFFFFF);
+ gfx_drawpixel(rx, ry, rand() % 0xFFFFFF);
+ }
+ int start = *current_tick;
+ for(int i=0;i<1000;++i)
+ gfx_clear(0xff00ff);
+ int end = *current_tick;
+ printf("ticks for 1000 fills: %x\n", end-start);
+ */
}
- gfx_clear(0xffffff);
- printf("Testing keyboard LED's...\n");
+ // printf("Testing keyboard LED's...\n");
while(1)
{
diff --git a/libc/include/stdio.h b/libc/include/stdio.h
index ac547c7..92442ac 100644
--- a/libc/include/stdio.h
+++ b/libc/include/stdio.h
@@ -1,4 +1,4 @@
-int printf(const char* fmt, ...);
+int printf(const char* fmt, ...) __attribute__ ((format (printf, 1, 2)));;
int puts(const char*);
int putchar(int);
diff --git a/libc/include/string.h b/libc/include/string.h
index 650a7ac..05050a0 100644
--- a/libc/include/string.h
+++ b/libc/include/string.h
@@ -1,3 +1,4 @@
#include <stddef.h>
int strlen(const char*);
void* memset(void*, int, size_t);
+void* memcpy(void*, void*, size_t);
diff --git a/libc/string.c b/libc/string.c
index 8a9e422..11d398f 100644
--- a/libc/string.c
+++ b/libc/string.c
@@ -18,3 +18,10 @@ void* memset(void *buf, int val, size_t sz)
}
return buf;
}
+
+void* memcpy(void *dest, void *src, size_t sz)
+{
+ while(sz--)
+ *(char*)dest++ = *(char*)src++;
+ return dest;
+}
generated by cgit v1.1 at 2026-04-24 21:00:12 +0000