Basic idea's are created for the storage solution

- Added boot device info parsing to the kernel
- Added a pointer in the kernel to our pre-kernel BootInfo structure
- Created a layout for the FAT driver
- Created a layout for the virtual filesystem
- Separated IDE driver from the basic atapio driver.
	This will ensure we are not using one or the other
- The create_harddrive shell script will now actually build a harddrive image of
	the kernel
- The virtual filesystem initializes and creates a filesystem structure
	for every FAT16 partition in the master boot record
This commit is contained in:
2023-02-21 21:43:14 +01:00
parent ef2bba5c1c
commit 50bf952a49
19 changed files with 290 additions and 123 deletions

View File

@ -14,11 +14,11 @@
#include "terminal/kterm.h"
#include "interrupts/idt.h"
#include "serial.h"
#include "storage/vfs/VFS.h"
#include "../CoreLib/Memory.h"
#include "storage/vfs/vfs.h"
extern "C" void LoadGlobalDescriptorTable();
extern "C" void jump_usermode();
extern BootInfoBlock* BIB;
extern "C" void kernel ()
{
@ -26,7 +26,6 @@ extern "C" void kernel ()
init_serial();
kterm_init();
setup_tss();
initGDT();
initidt();
@ -41,12 +40,33 @@ extern "C" void kernel ()
pit_initialise();
ACPI::initialize();
//PCI::Scan();
PCI::Scan();
processor::initialize();
processor::enable_protectedMode();
printf("Boot device: 0x%x\n", BIB->bootDeviceID);
unsigned int part3 = BIB->bootDeviceID & 0xFF;
unsigned int part2 = (BIB->bootDeviceID & 0xFF00) >> 8;
unsigned int part1 = (BIB->bootDeviceID & 0xFF0000) >> 16;
unsigned int drive = (BIB->bootDeviceID & 0xFF000000) >> 24;
if (drive == 0x80 )
printf("booted from disk!\n");
if(drive == 0x00)
printf("booted from floppy disk\n");
printf("Part1: %d, Part2: %d, Part3: %d\n", part1, part2 , part3);
VirtualFileSystem::initialize();
// Try and open hello.txt file
VirtualFileSystem::OpenFile("a:hello.txt");
// Try and open grub.cfg file
VirtualFileSystem::OpenFile("a:boot/grub/grub.cfg");
#ifdef USERMODE_RELEASE
// Lets jump into user mode