kernel/kmain.c


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#include <kernel/con.h>
#include <kernel/sched.h>
#include <kernel/sys.h>
#include <stdint.h>

extern int hd_read(void*, uint32_t, uint8_t);
extern int hd_write(void*, uint32_t, uint8_t);

static char buf[0x1000];

void kmain(void) {
  int i;
  int ret;

  printk("Kernel booted!\n\n");

  /* sched_init(); */

  /* try to read some data */

  ret = hd_read(buf, 0, 2);
  if(ret < 0) {
    printk("Failed to read data!\n");
    return;
  }
  printk("Successfully read first and second sectors!\n");
  printk("First dword (sector 0): 0x%08x\n", *((uint32_t*) buf));
  printk("First dword (sector 1): 0x%08x\n", *((uint32_t*) (buf + 512)));

  /* try to write some data */

  for(i = 0; i < 256; i++)
    ((uint16_t*) buf)[i] = i;

  ret = hd_write(buf, 2, 1);
  if(ret < 0) {
    printk("Failed to write data!\n");
    return;
  }

  printk("Successfully wrote to sector 2\n");
}