BarinkOS/src/kernel/kernel.cpp

92 lines
2.6 KiB
C++
Raw Normal View History

#include "kernel.h"
#define GB2 262144
extern "C" void kernel_main (void);
extern "C" void early_main(unsigned long magic, unsigned long addr){
2021-07-22 19:02:47 +00:00
/** initialize terminal interface */
kterm_init();
2021-10-23 11:26:15 +00:00
// Check Multiboot magic number
2021-07-22 19:02:47 +00:00
if (magic != MULTIBOOT_BOOTLOADER_MAGIC){
2021-10-23 11:26:15 +00:00
printf("Invalid magic number: 0x%x\n", magic);
2021-07-22 19:02:47 +00:00
return;
}
2021-10-23 11:26:15 +00:00
multiboot_info_t* mbt = (multiboot_info_t*) addr;
2021-07-22 19:02:47 +00:00
/* Are mmap_* valid? */
2021-10-23 11:26:15 +00:00
if (CHECK_FLAG(mbt->flags, 6)){
PhysicalMemoryManager_initialise( mbt->mmap_addr, GB2/* Seriously dangerous hardcoded memory value*/);
PhysicalMemoryManager_initialise_available_regions(mbt->mmap_addr, mbt->mmap_addr + mbt->mmap_length);
PhysicalMemoryManager_deinitialise_kernel();
extern uint8_t* kernel_begin;
extern uint8_t* kernel_end;
printf("Kernel MemoryMap:\n");
printf("kernel: 0x%x - 0x%x\n", &kernel_begin , &kernel_end);
printf("Frames used: 0x%x blocks of 4 KiB\n", used_blocks);
2021-07-22 19:02:47 +00:00
}
2021-11-16 20:17:49 +00:00
initGDT();
init_idt();
// Enable interrupts
asm volatile("STI");
CheckMBT( (multiboot_info_t *) addr);
kernel_main();
2021-05-12 22:03:00 +00:00
}
extern "C" void kernel_main (void) {
2021-07-22 19:02:47 +00:00
init_serial();
pit_initialise();
2021-11-06 20:56:42 +00:00
while (true){
printf("SUPERVISOR:>$ " );
int characterCount = 0;
char command[10] = "";
// NOTE: lets just show a kernel prompt
uint8_t ScanCode = getKey();
while( ScanCode != 0x1C )
{
char character = getASCIIKey();
kterm_put(character );
// wHAT THE HELL
if( characterCount < 10 ){
command[characterCount] = character;
characterCount++;
}
ScanCode = getKey();
}
printf("\n");
KeyHandled();
if ( strncmp("TIME", command , characterCount ) == 0 ) {
read_rtc();
printf( "UTC time: %02d-%02d-%02d %02d:%02d:%02d (Ticks: %06d)\n" ,year, month, day, hour, minute, second, pit_tick);
} else if(strncmp("TEST", command, characterCount) == 0){
// asm volatile ("MOV $4, %AX ; MOV $0, %BX ; DIV %BX"); // IRS 0
}
else{
printf("Unknown command\n");
}
delay(1000);
}
}