Nigel/BarinkOS
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Couple of small changes

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* Commented out the map page function call to handle page not present
* Mapped the ACPI_RECLAIMABLE_MEMORY
* Set VBE to false when VBE is not initialized by the bootloader
This commit is contained in:
Nigel Barink 2023-10-27 18:32:03 +02:00
parent e82392e9d9
commit 2522492835
2 changed files with 8 additions and 12 deletions
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2
kernel/interrupts/idt.cpp
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@ -191,7 +191,7 @@ void irs_handler (registers* regs) {
printf("* Page protection violation!\n");
} else{
printf("* Page not-present!\n");
Immediate_Map(FaultingAddress, FaultingAddress - 0xC0000000);
//Immediate_Map(FaultingAddress, FaultingAddress);
}

18
kernel/prekernel/prekernel.cpp
View File

@ -2,6 +2,8 @@
#include <stddef.h>
#include "multiboot.h"
#include "../memory/PhysicalMemoryManager.h"
#include "../memory/VirtualMemoryManager.h"
#include "../acpi/acpi.h"
#define CHECK_FLAG(flags, bit) ((flags) & (1 <<(bit)))
#define VADDR_TO_PADDR(vaddr) (vaddr - 0xC0000000)
@ -10,7 +12,6 @@ BootInfoBlock* BIB;
extern "C" void prekernelSetup ( unsigned long magic, multiboot_info_t* mbi)
{
/*
* Check Multiboot magic number
*/
@ -21,18 +22,13 @@ extern "C" void prekernelSetup ( unsigned long magic, multiboot_info_t* mbi)
}
mbi = PADDR_TO_VADDR(mbi);
// Setup the physical memory manager immmediatly
// Doing so saves the complications of doing it later when
// paging is enabled
/*
If we got a memory map from our bootloader we
should be parsing it to find out the memory regions available.
*/
if (CHECK_FLAG(mbi->flags, 6))
{
{
// Calculate total memory size
uint32_t RAM_size = 0;
for(
@ -56,6 +52,8 @@ extern "C" void prekernelSetup ( unsigned long magic, multiboot_info_t* mbi)
deallocate_region(mmap->addr, mmap->len);
if(mmap->type == MULTIBOOT_MEMORY_ACPI_RECLAIMABLE)
allocate_region(mmap->addr, mmap->len);
// memory map
Immediate_Map(mmap->addr , mmap->addr);
if(mmap->type == MULTIBOOT_MEMORY_RESERVED)
allocate_region(mmap->addr, mmap->len);
if(mmap->type == MULTIBOOT_MEMORY_NVS)
@ -99,8 +97,6 @@ extern "C" void prekernelSetup ( unsigned long magic, multiboot_info_t* mbi)
uint32_t i;
BIB->GrubModuleCount = mbi->mods_count;
for(i = 0, mod = (multiboot_module_t *) mbi->mods_addr; i < mbi->mods_count; i++ , mod++){
}
@ -135,6 +131,6 @@ extern "C" void prekernelSetup ( unsigned long magic, multiboot_info_t* mbi)
// NOTE: Do something with it.. (Store it , process it etc...)
} else{
BIB->EnabledVBE;
BIB->EnabledVBE = false;
}
}