BarinkOS/src/kernel/kernel.cpp

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#include "kernel.h"
#define GB4 524288
#define GB2 262144
extern "C" void early_main(unsigned long magic, unsigned long addr){
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/** initialize terminal interface */
kterm_init();
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if (magic != MULTIBOOT_BOOTLOADER_MAGIC){
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printf("Invalid magic number: 0x%x\n", magic);
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return;
}
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CheckMBT( (multiboot_info_t *) addr);
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multiboot_info_t* mbt = (multiboot_info_t*) addr;
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/* Are mmap_* valid? */
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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);
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}
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printf("Call to setupGdt!\n");
setupGdt();
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}
extern "C" void kernel_main (void) {
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printf("call to init serial\n");
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init_serial();
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while (true){
//Read time indefinetely
read_rtc();
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printf( "UTC time: %02d-%02d-%02d %02d:%02d:%02d [ Formatted as YY-MM-DD h:mm:ss]\r" ,year, month, day, hour, minute, second);
delay(1000);
}
}