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Added <errno.h> and made kernel use it

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Tom-on
2026-03-25 18:17:42 +01:00
parent 7a57999d05
commit 2f05396651
15 changed files with 189 additions and 135 deletions
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kernel/src/serial.c
+10 -3
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@@ -1,3 +1,4 @@
#include "errno.h"
#include <vsnprintf.h>
#include <kernel.h>
#include <system.h>
@@ -11,13 +12,15 @@ int serial_init(int dev) {
outb(dev + 3, 0x03); // 8 bits, no parity, one stop bit
outb(dev + 2, 0xC7); // Enable FIFO, clear them, with 14 byte threshold
outb(dev + 4, 0x0B); // IRQs enabled, RTS/DSR set
outb(dev + 4, 0x1E); // Set in loopback mode, test the serial chip
outb(dev + 0, 0xAE); // Test serial chip (send byte 0xAE and check if it returns)
if (inb(dev + 0) != 0xAE) return 1;
if (inb(dev + 0) != 0xAE) return -ENODEV;
outb(dev + 4, 0x0F); // non-loopback, IRQs enabled, OUT#1 and OUT#2 bits enabled
debugf("\x1b[H\x1b[JSerial display initiated!\n\n");
serial_cls(COM1);
serial_puts(COM1, "Serial display (COM1)\n\n");
return 0;
}
@@ -54,6 +57,10 @@ void serial_puts(int dev, char* s) {
serial_write(dev, s, len);
}
void serial_cls(int dev) {
serial_write(dev, "\x1b[H\x1b[J", 6);
}
int debugf(char* fmt, ...) {
va_list args;
va_start(args, fmt);