Nigel/BarinkOS
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KERNEL: Pre-kernel sets up the physical memory manager.

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* BUG: allocated blocks is possibly incorrect!
* prekernel no longer gets compiled as being in physical memory
This commit is contained in:
Nigel Barink
2022-09-03 01:00:17 +02:00
parent 01fcb0aa15
commit 656ca0baa8
9 changed files with 193 additions and 237 deletions
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37
source/kernel/kernel.cpp
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@ -39,13 +39,17 @@ extern "C" void early_main()
{
init_serial();
print_serial("Hello Higher half kernel!\n");
kterm_init();
printf("Allocated blocks: %d \n", GetUsedBlocks());
initGDT();
init_idt();
// Enable interrupts
asm volatile("STI");
ProcessBootInfo();
initHeap();
@ -75,33 +79,4 @@ extern "C" void early_main()
kernel_main();
}
void ProcessBootInfo(){
uint32_t BootInfoStruct = BootInfoBlock_pptr + 0xC0000000;
BootInfoBlock* BootInfo = (BootInfoBlock*) ( BootInfoBlock_pptr + 0xC0000000 );
if( BootInfo->ValidELFHeader )
{
// NOTE: Do something with it.. (Store it , process it etc...)
}
if(BootInfo->EnabledVBE)
{
// NOTE: Do something with it.. (Store it , process it etc...)
}
if(BootInfo->ValidSymbolTable)
{
// NOTE: Do something with it.. (Store it , process it etc...)
// printf("- Valid Symbol Table available at 0x%x.\n Tab Size: %d, str Size: %d\n", BootInfo->SymbolTableAddr, BootInfo->SymbolTabSize, BootInfo->SymbolStrSize);
}
if(BootInfo->PhysicalMemoryMapAvailable)
{
SetupPhysicalMemoryManager(BootInfo);
}
}
}