Merge into main the new state of the operating system/kernel #1
@ -33,7 +33,8 @@ OFILES = $(OBJ_DIR)/boot.o \
|
||||
$(OBJ_DIR)/atapiDevice.o \
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||||
$(OBJ_DIR)/ataDevice.o \
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||||
$(OBJ_DIR)/rsdp.o \
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||||
$(OBJ_DIR)/acpi.o
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||||
$(OBJ_DIR)/acpi.o \
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||||
$(OBJ_DIR)/fat.o
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||||
|
||||
OBJ_LINK_LIST = $(CRTI_OBJ) $(CRTBEGIN_OBJ) $(OFILES) $(CRTEND_OBJ) $(CRTN_OBJ)
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||||
INTERNAL_OBJS = $(CRTI_OBJ) $(OFILES) $(CRTN_OBJ)
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||||
@ -79,7 +80,7 @@ $(OBJ_DIR)/atapiDevice.o:
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||||
$(CPP) -c storage/atapi/atapiDevice.cpp -o $(OBJ_DIR)/atapiDevice.o $(CFLAGS) -fno-exceptions -fno-rtti
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$(OBJ_DIR)/ataDevice.o:
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||||
$(CPP) -c "storage/ata pio/ataDevice.cpp" -o $(OBJ_DIR)/ataDevice.o $(CFLAGS) -fno-exceptions -fno-rtti
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||||
$(CPP) -c "storage/ata pio/ATAPIO.cpp" -o $(OBJ_DIR)/ataDevice.o $(CFLAGS) -fno-exceptions -fno-rtti
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$(OBJ_DIR)/rsdp.o:
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$(CPP) -c acpi/rsdp.cpp -o $(OBJ_DIR)/rsdp.o $(CFLAGS) -fno-exceptions -fno-rtti
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@ -91,7 +92,7 @@ $(OBJ_DIR)/pit.o:
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||||
$(CPP) -c drivers/pit/pit.cpp -o $(OBJ_DIR)/pit.o $(CFLAGS) -fno-exceptions -fno-rtti
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$(OBJ_DIR)/VFS.o:
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||||
$(CPP) -c storage/vfs/VFS.cpp -o $(OBJ_DIR)/VFS.o $(CFLAGS) -fno-exceptions -fno-rtti
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$(CPP) -c storage/vfs/vfs.cpp -o $(OBJ_DIR)/VFS.o $(CFLAGS) -fno-exceptions -fno-rtti
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||||
$(OBJ_DIR)/keyboard.o:
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||||
$(CPP) -c drivers/ps-2/keyboard.cpp -o $(OBJ_DIR)/keyboard.o $(CFLAGS) -fno-exceptions -fno-rtti
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@ -117,6 +118,9 @@ $(OBJ_DIR)/prekernel.o:
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$(OBJ_DIR)/processor.o:
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$(CPP) -c i386/processor.cpp -o $(OBJ_DIR)/processor.o $(CFLAGS) -fno-exceptions -fno-rtti
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||||
$(OBJ_DIR)/fat.o:
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||||
$(CPP) -c storage/filesystems/FAT/FAT.cpp -o $(OBJ_DIR)/fat.o $(CFLAGS) -fno-exceptions -fno-rtti
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# Assembly -> Object files
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$(OBJ_DIR)/boot.o:
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$(AS) boot/boot.s -o $(OBJ_DIR)/boot.o
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@ -14,11 +14,11 @@
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#include "terminal/kterm.h"
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#include "interrupts/idt.h"
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#include "serial.h"
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#include "storage/vfs/VFS.h"
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#include "../CoreLib/Memory.h"
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#include "storage/vfs/vfs.h"
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extern "C" void LoadGlobalDescriptorTable();
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extern "C" void jump_usermode();
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extern BootInfoBlock* BIB;
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extern "C" void kernel ()
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{
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@ -26,7 +26,6 @@ extern "C" void kernel ()
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init_serial();
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kterm_init();
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setup_tss();
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initGDT();
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initidt();
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@ -41,12 +40,33 @@ extern "C" void kernel ()
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pit_initialise();
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ACPI::initialize();
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//PCI::Scan();
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PCI::Scan();
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processor::initialize();
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processor::enable_protectedMode();
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printf("Boot device: 0x%x\n", BIB->bootDeviceID);
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unsigned int part3 = BIB->bootDeviceID & 0xFF;
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unsigned int part2 = (BIB->bootDeviceID & 0xFF00) >> 8;
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unsigned int part1 = (BIB->bootDeviceID & 0xFF0000) >> 16;
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unsigned int drive = (BIB->bootDeviceID & 0xFF000000) >> 24;
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if (drive == 0x80 )
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printf("booted from disk!\n");
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if(drive == 0x00)
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printf("booted from floppy disk\n");
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printf("Part1: %d, Part2: %d, Part3: %d\n", part1, part2 , part3);
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VirtualFileSystem::initialize();
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// Try and open hello.txt file
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VirtualFileSystem::OpenFile("a:hello.txt");
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// Try and open grub.cfg file
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VirtualFileSystem::OpenFile("a:boot/grub/grub.cfg");
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||||
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#ifdef USERMODE_RELEASE
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// Lets jump into user mode
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@ -6,7 +6,7 @@
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#define CHECK_FLAG(flags, bit) ((flags) & (1 <<(bit)))
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#define VADDR_TO_PADDR(vaddr) (vaddr - 0xC0000000)
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#define PADDR_TO_VADDR(paddr) (paddr + 0xC0000000)
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multiboot_info_t* global_mbi;
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BootInfoBlock* BIB;
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extern "C" void prekernelSetup ( unsigned long magic, multiboot_info_t* mbi)
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{
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@ -21,7 +21,6 @@ extern "C" void prekernelSetup ( unsigned long magic, multiboot_info_t* mbi)
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}
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mbi = PADDR_TO_VADDR(mbi);
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global_mbi = mbi;
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// Setup the physical memory manager immmediatly
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// Doing so saves the complications of doing it later when
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@ -82,13 +81,14 @@ extern "C" void prekernelSetup ( unsigned long magic, multiboot_info_t* mbi)
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}
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// allocate a full block for the other boot info!
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BootInfoBlock* BIB = (BootInfoBlock*) allocate_block();
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BIB = (BootInfoBlock*) allocate_block();
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||||
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||||
/* is boot device valid ? */
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if (CHECK_FLAG (mbi->flags, 1))
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{
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BIB->bootDeviceID = mbi->boot_device;
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} else{
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BIB->bootDeviceID = 0x11111111;
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}
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||||
@ -1,4 +1,4 @@
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#include "ataDevice.h"
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#include "ATAPIO.h"
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#include "../../io/io.h"
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#define IS_BIT_SET(x, bit) ((x >> bit & 0x1) == 1)
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@ -91,7 +91,7 @@ void ATAPIO::Write(uint16_t data, DEVICE_DRIVE dev){
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}
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void ATAPIO::Identify(uint16_t DEVICE_CHANNEL,DEVICE_DRIVE drive ){
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||||
bool ATAPIO::Identify(ATAPIO_PORT DEVICE_CHANNEL, DEVICE_DRIVE drive ){
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// lets ignore which port we actually want to check for now !
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/*
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@ -125,12 +125,11 @@ void ATAPIO::Identify(uint16_t DEVICE_CHANNEL,DEVICE_DRIVE drive ){
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// Select the target drive
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outb(DEVICE_CHANNEL | 6, drive); // on the primary bus select the master drive
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||||
outb(DEVICE_CHANNEL | 6 , 0x0); // write 0 to the controlport for some reason
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outb(DEVICE_CHANNEL | 6, drive);
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uint8_t status = inb(DEVICE_CHANNEL | 7 );
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if(status == 0x00){
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printf("No drive\n");
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return;
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||||
return false;
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||||
}
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// send the identify command;
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outb(DEVICE_CHANNEL | 7, 0xEC);
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||||
@ -153,7 +152,7 @@ void ATAPIO::Identify(uint16_t DEVICE_CHANNEL,DEVICE_DRIVE drive ){
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||||
uint8_t status2 = inb(DEVICE_CHANNEL | 7);
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||||
if( status2 == 0x00){
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||||
printf("No drive\n");
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||||
return;
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||||
return false;
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||||
}
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||||
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||||
//printf("Waiting until ready...\n");
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||||
@ -163,7 +162,7 @@ void ATAPIO::Identify(uint16_t DEVICE_CHANNEL,DEVICE_DRIVE drive ){
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||||
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||||
if( status2 & 0x01){
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||||
printf("Error!\n");
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return ;
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return false;
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||||
}
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||||
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||||
uint16_t deviceIdentify [256] = {0};
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@ -182,17 +181,17 @@ void ATAPIO::Identify(uint16_t DEVICE_CHANNEL,DEVICE_DRIVE drive ){
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||||
kterm_put((char)(deviceIdentify[i] & 0x00FF));
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}
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||||
kterm_put('\n');
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||||
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||||
return true;
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||||
}
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||||
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||||
void ATAPIO::Soft_Reset(uint8_t DEVICE_CHANNEL,DEVICE_DRIVE drive){
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void ATAPIO::Soft_Reset(ATAPIO_PORT DEVICE_CHANNEL, DEVICE_DRIVE drive){
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printf("Soft reseting drive...\n");
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// outb(channels[DEVICE_CHANNEL].base + 7 , 0x4);
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outb(DEVICE_CHANNEL + 7 , 0x4);
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// wait a bit..
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||||
for(int i = 0 ; i < 1000000; i++){
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asm volatile("NOP");
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}
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//outb(channels[DEVICE_CHANNEL].base + 7 , 0x0);
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outb(DEVICE_CHANNEL + 7 , 0x0);
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}
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||||
@ -3,8 +3,6 @@
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#include "../ide/ideCommands.h"
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#include "../ide/sampleIDE.definitions.h"
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#include "../../devices/BlockDevice.h"
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||||
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#include "../../terminal/kterm.h"
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/*
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@ -19,7 +17,7 @@ enum DEVICE_DRIVE{
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};
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enum BUS_PORT {
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enum ATAPIO_PORT {
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Primary = 0x1f0,
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Secondary = 0x170
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};
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||||
@ -29,10 +27,10 @@ enum BUS_PORT {
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class ATAPIO
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{
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public:
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static void Identify(uint16_t, DEVICE_DRIVE);
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static bool Identify(ATAPIO_PORT, DEVICE_DRIVE);
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static void Read (uint16_t, DEVICE_DRIVE, uint32_t, uint16_t*);
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static void Write(uint16_t, DEVICE_DRIVE);
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||||
static void Soft_Reset(uint8_t ,DEVICE_DRIVE );
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||||
static void Soft_Reset(ATAPIO_PORT , DEVICE_DRIVE );
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||||
};
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||||
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||||
|
||||
@ -1,20 +1,40 @@
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||||
//
|
||||
// Created by nigel on 21/02/23.
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||||
//
|
||||
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||||
#include "FAT.h"
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||||
#include "../../ata pio/ATAPIO.h"
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#include "../../../memory/KernelHeap.h"
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#include <CoreLib/Memory.h>
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||||
void FAT::Read()
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||||
void FAT::Read(PFILE file, unsigned char* buffer , unsigned int length)
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{
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||||
|
||||
}
|
||||
|
||||
void FAT::Open()
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||||
FILE FAT::Open(char* filename)
|
||||
{
|
||||
|
||||
char* tokstate = NULL;
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||||
char* nextdir = strtok(filename, "/", &tokstate);
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||||
|
||||
while (nextdir)
|
||||
{
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||||
|
||||
// Read the root directory
|
||||
printf("First entry to look for: %s\n", nextdir);
|
||||
|
||||
|
||||
|
||||
nextdir = strtok(NULL, "/", &tokstate);
|
||||
}
|
||||
|
||||
FILE file;
|
||||
file.flags = FS_INVALID;
|
||||
return file;
|
||||
|
||||
}
|
||||
|
||||
void FAT::Write()
|
||||
void FAT::Write(PFILE file, unsigned char* buffer, unsigned int length)
|
||||
{
|
||||
|
||||
}
|
||||
@ -28,9 +48,17 @@ void ParseDateInteger(unsigned int date){
|
||||
|
||||
}
|
||||
|
||||
BiosParameterBlock* getBPB(MBR* mbr, bool DEBUG =false ){
|
||||
|
||||
BiosParameterBlock* getBPB(PTR_PARTITION partition, bool DEBUG =false ){
|
||||
BiosParameterBlock* bpb = (BiosParameterBlock*) malloc(sizeof(BiosParameterBlock));
|
||||
ATA_DEVICE::Read(BUS_PORT::Primary, DEVICE_DRIVE::MASTER, mbr->TableEntries[0].LBA_partition_start, (uint16_t*) bpb);
|
||||
|
||||
ATAPIO_PORT port = (ATAPIO_PORT)(partition->Disk & 0x01FF);
|
||||
DEVICE_DRIVE drive = (DEVICE_DRIVE)(partition->Disk >> 16);
|
||||
|
||||
printf("ATAPIO_PORT: 0x%x DEVICE_DRIVE: 0x%x\n",port, drive);
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||||
printf("Partition Start Address (LBA): 0x%x\n", partition->StartAddress);
|
||||
|
||||
ATAPIO::Read(ATAPIO_PORT::Primary, DEVICE_DRIVE::MASTER, partition->StartAddress, (uint16_t*) bpb);
|
||||
|
||||
if(DEBUG)
|
||||
{
|
||||
@ -44,15 +72,37 @@ BiosParameterBlock* getBPB(MBR* mbr, bool DEBUG =false ){
|
||||
printf("Sectors per FAT: %d\n", bpb->NumberOfSectorsPerFAT);
|
||||
}
|
||||
|
||||
|
||||
|
||||
return bpb;
|
||||
}
|
||||
|
||||
uint16_t* ReadFAT (BiosParameterBlock& bpb , MBR& mbr, bool DEBUG = false ) {
|
||||
uint32_t FATAddress = mbr.TableEntries[0].LBA_partition_start + bpb.ReservedSectors ;
|
||||
bool FAT::Validate(PTR_PARTITION partition )
|
||||
{
|
||||
|
||||
auto* bootParams = getBPB(partition, true);
|
||||
|
||||
if(bootParams->OEM_id) {
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
|
||||
}
|
||||
|
||||
void FAT::Info(_PARTITION *pPartition, PFS pSystem) {
|
||||
pSystem->Read = FAT::Read;
|
||||
pSystem->Write = FAT::Write;
|
||||
pSystem->Open = FAT::Open;
|
||||
|
||||
|
||||
}
|
||||
|
||||
uint16_t* ReadFAT (BiosParameterBlock& bpb , PTR_PARTITION partition, bool DEBUG = false ) {
|
||||
uint32_t FATAddress = partition->StartAddress + bpb.ReservedSectors ;
|
||||
uint16_t* FAT = (uint16_t*)malloc(sizeof (uint16_t) * 256);
|
||||
ATA_DEVICE::Read(BUS_PORT::Primary, DEVICE_DRIVE::MASTER, FATAddress, FAT );
|
||||
|
||||
ATAPIO_PORT port = (ATAPIO_PORT)(partition->Disk & 0x01FF);
|
||||
DEVICE_DRIVE drive = (DEVICE_DRIVE)(partition->Disk >> 16);
|
||||
ATAPIO::Read(port, drive, FATAddress, FAT );
|
||||
|
||||
// Show data in terminal
|
||||
if(DEBUG){
|
||||
@ -76,7 +126,7 @@ void readFile(uint32_t DataRegion, DirectoryEntry* entry, uint16_t FATentry, Bio
|
||||
|
||||
|
||||
uint16_t dataBlob[256];
|
||||
ATA_DEVICE::Read(BUS_PORT::Primary, DEVICE_DRIVE::MASTER, sector, dataBlob);
|
||||
ATAPIO::Read(ATAPIO_PORT::Primary, DEVICE_DRIVE::MASTER, sector, dataBlob);
|
||||
for (unsigned short n: dataBlob) {
|
||||
kterm_put(n & 0x00ff);
|
||||
|
||||
@ -84,7 +134,7 @@ void readFile(uint32_t DataRegion, DirectoryEntry* entry, uint16_t FATentry, Bio
|
||||
}
|
||||
kterm_put('\n');
|
||||
}
|
||||
|
||||
/*
|
||||
void listFilesInRoot(MBR& mbr, BiosParameterBlock& bpb ){
|
||||
auto FATAddress = mbr.TableEntries[0].LBA_partition_start + bpb.ReservedSectors;
|
||||
uint32_t RootDirectoryRegion = FATAddress + ( bpb.NumberOfFileAllocationTables * bpb.NumberOfSectorsPerFAT );
|
||||
@ -265,3 +315,4 @@ FILE fsysFatOpenSubDir(FILE kFile, const char* filename){
|
||||
file.flags = FS_INVALID;
|
||||
return file;
|
||||
}
|
||||
*/
|
||||
@ -5,7 +5,7 @@
|
||||
#include "ExtendBootRecord.h"
|
||||
#include "BiosParameterBlock.h"
|
||||
#include "DirectoryEntry.h"
|
||||
|
||||
#include "../../vfs/StorageTypes.h"
|
||||
|
||||
// Date Format
|
||||
// [0..4] Day
|
||||
@ -20,9 +20,17 @@
|
||||
|
||||
class FAT {
|
||||
public:
|
||||
void Open();
|
||||
void Read();
|
||||
void Write();
|
||||
|
||||
|
||||
|
||||
static bool Validate(PTR_PARTITION partition );
|
||||
|
||||
static FILE Open(char* filename);
|
||||
static void Read(PFILE file, unsigned char* buffer , unsigned int length);
|
||||
static void Write(PFILE file, unsigned char* buffer, unsigned int length);
|
||||
|
||||
static void Info(_PARTITION *pPartition, PFS pSystem);
|
||||
|
||||
private:
|
||||
enum struct TYPE{
|
||||
FAT,
|
||||
@ -1,19 +1,19 @@
|
||||
#pragma once
|
||||
#include <stdint-gcc.h>
|
||||
#include "PartitionTableEntry.h"
|
||||
#include "../../memory/KernelHeap.h"
|
||||
#include "../../storage/ata pio/ataDevice.h"
|
||||
#include "../../../memory/KernelHeap.h"
|
||||
#include "../../ata pio/ATAPIO.h"
|
||||
|
||||
struct MBR {
|
||||
uint8_t code [440];
|
||||
uint32_t uniqueID;
|
||||
uint16_t Reserved;
|
||||
PartitionTableEntry TableEntries[4];
|
||||
struct PartitionTableEntry TableEntries[4];
|
||||
uint16_t ValidBootsector;
|
||||
}__attribute__((packed));
|
||||
|
||||
|
||||
MBR* getPartitions( bool DEBUG = false){
|
||||
inline MBR* GetPartitions(bool DEBUG = false){
|
||||
const int C = 0;
|
||||
const int H = 0;
|
||||
const int HPC = 16;
|
||||
@ -21,10 +21,13 @@ MBR* getPartitions( bool DEBUG = false){
|
||||
|
||||
int S =1;
|
||||
uint32_t LBA = (C*HPC+H) * SPT + (S-1);
|
||||
|
||||
MBR* mbr =(MBR*) malloc(sizeof (MBR));
|
||||
|
||||
ATAPIO::Read(BUS_PORT::Primary, DEVICE_DRIVE::MASTER, LBA, (uint16_t*)mbr);
|
||||
ATAPIO::Read(ATAPIO_PORT::Primary, DEVICE_DRIVE::MASTER, LBA, (uint16_t*)mbr);
|
||||
|
||||
|
||||
printf("MBR (In Memory) Address 0x%x, Size = %d\n", mbr, sizeof (MBR));
|
||||
if(DEBUG){
|
||||
printf("BootSector: 0x%x\n", mbr->ValidBootsector );
|
||||
for( int i = 0 ; i < 4 ; i ++){
|
||||
@ -26,7 +26,15 @@ typedef struct _FILE_SYSTEM{
|
||||
FILE (*Directory) (const char* Directoryname);
|
||||
void (*Mount) ();
|
||||
void (*Read) (PFILE file, unsigned char* buffer, unsigned int length);
|
||||
void (Close) (PFILE);
|
||||
FILE (*Open) (const char* filename);
|
||||
void (*Write)(PFILE file, unsigned char* buffer, unsigned int length);
|
||||
void (*Close) (PFILE);
|
||||
FILE (*Open) (char* filename);
|
||||
}FILESYSTEM, *PFS;
|
||||
|
||||
typedef struct _PARTITION {
|
||||
uint32_t Disk;
|
||||
uint32_t StartAddress;
|
||||
uint32_t Sectors;
|
||||
uint8_t Fs_hint;
|
||||
uint8_t Attributes;
|
||||
}PARTITION, *PTR_PARTITION;
|
||||
|
||||
@ -1,54 +0,0 @@
|
||||
#include "VFS.h"
|
||||
#include <stdint-gcc.h>
|
||||
#include "../../memory/KernelHeap.h"
|
||||
#include <CoreLib/Memory.h>
|
||||
|
||||
PFS VirtualFileSystem::_filesystems[VirtualFileSystem::DEVICE_MAX];
|
||||
|
||||
void VirtualFileSystem::initialize()
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
void VirtualFileSystem::ResolvePath(Path &path)
|
||||
{
|
||||
// See reference material (1) https://man7.org/linux/man-pages/man7/path_resolution.7.html
|
||||
|
||||
char* string_path = path.str();
|
||||
void* cpy = string_path;
|
||||
|
||||
bool isAbsolutePath = string_path[0] == '/';
|
||||
if(isAbsolutePath)
|
||||
{
|
||||
// strip the first slash
|
||||
string_path++;
|
||||
}
|
||||
|
||||
char* tokstate = NULL;
|
||||
char* nextdir = strtok(string_path, "/", &tokstate);
|
||||
while (nextdir)
|
||||
{
|
||||
printf("First entry to look for: %s\n", nextdir);
|
||||
nextdir = strtok(NULL, "/", &tokstate);
|
||||
}
|
||||
|
||||
free(cpy);
|
||||
}
|
||||
|
||||
void VirtualFileSystem::Mount(PFS filesystemDescriptor, unsigned int DeviceID)
|
||||
{
|
||||
if(DeviceID < DEVICE_MAX)
|
||||
if(filesystemDescriptor)
|
||||
_filesystems[DeviceID] = filesystemDescriptor;
|
||||
}
|
||||
|
||||
|
||||
void VirtualFileSystem::Unmount(unsigned int DeviceID) {
|
||||
if(DeviceID < DEVICE_MAX)
|
||||
_filesystems[DeviceID] = nullptr;
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
130
kernel/storage/vfs/vfs.cpp
Normal file
130
kernel/storage/vfs/vfs.cpp
Normal file
@ -0,0 +1,130 @@
|
||||
#include "vfs.h"
|
||||
#include <stdint-gcc.h>
|
||||
#include "../../memory/KernelHeap.h"
|
||||
#include "../ata pio/ATAPIO.h"
|
||||
#include "../partitiontables/mbr/MasterBootRecord.h"
|
||||
#include "../filesystems/FAT/FAT.h"
|
||||
#include "StorageTypes.h"
|
||||
|
||||
#include <CoreLib/Memory.h>
|
||||
|
||||
PFS VirtualFileSystem::_filesystems[VirtualFileSystem::DEVICE_MAX];
|
||||
PTR_PARTITION VirtualFileSystem::_partitions [VirtualFileSystem::PARTITION_MAX];
|
||||
unsigned int VirtualFileSystem::num_partitions = 0;
|
||||
|
||||
void VirtualFileSystem::initialize()
|
||||
{
|
||||
|
||||
// Mount the boot disk
|
||||
// NOTE: we assume for now that it is the only disk in the system
|
||||
// This information could possibly be had from the bootloader (GRUB)
|
||||
// We als assume it is the primary device on the Master port.
|
||||
ATAPIO::Soft_Reset(ATAPIO_PORT::Primary, DEVICE_DRIVE::MASTER);
|
||||
bool isAvailable = ATAPIO::Identify(ATAPIO_PORT::Primary, DEVICE_DRIVE::MASTER);
|
||||
if(!isAvailable){
|
||||
// PANIC!!!
|
||||
printf("Failed to mount root filesystem!\n");
|
||||
return;
|
||||
}
|
||||
|
||||
auto masterbootrecord = GetPartitions(false);
|
||||
|
||||
for (auto partition : masterbootrecord->TableEntries)
|
||||
{
|
||||
if(partition.PartitionType == 0x0) continue; // Consider marked as free
|
||||
|
||||
PTR_PARTITION found_partition = (PARTITION*) malloc(sizeof(PARTITION));
|
||||
found_partition->Disk = ATAPIO_PORT::Primary | ( DEVICE_DRIVE::MASTER << 16);
|
||||
printf("Disk Identifier: 0x%x\n", found_partition->Disk);
|
||||
found_partition->Attributes = partition.driveAttribute;
|
||||
found_partition->StartAddress = partition.LBA_partition_start;
|
||||
found_partition->Sectors = partition.Number_sectors_inPartition;
|
||||
found_partition->Fs_hint = partition.PartitionType;
|
||||
|
||||
VirtualFileSystem::RegisterPartition(found_partition);
|
||||
}
|
||||
|
||||
printf("Found %d partitions on disk!\n", num_partitions);
|
||||
|
||||
for (int i = 0; i < num_partitions; i++)
|
||||
{
|
||||
auto* partition = _partitions[i];
|
||||
// Check the fs_hint for a proper driver
|
||||
if ( partition->Fs_hint != 0x06){
|
||||
printf("Assumed Unkown filesystem!\n");
|
||||
continue;
|
||||
}
|
||||
// Check if filesystem OK
|
||||
|
||||
printf("Partition Start Address (LBA): 0x%x\n", partition->StartAddress);
|
||||
bool valid = FAT::Validate(partition);
|
||||
if(!valid)
|
||||
{
|
||||
printf("Not a valid FAT fs!\n");
|
||||
continue;
|
||||
}
|
||||
|
||||
// setup FileSystem Description before mounting
|
||||
PFS FS_FAT = (PFS)malloc(sizeof(FILESYSTEM));
|
||||
|
||||
FAT::Info(partition, FS_FAT);
|
||||
|
||||
// Mount the partition/filesystem
|
||||
Mount(FS_FAT , i);
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
};
|
||||
|
||||
void VirtualFileSystem::RegisterPartition(PTR_PARTITION partition) {
|
||||
_partitions[num_partitions] = partition;
|
||||
num_partitions++;
|
||||
}
|
||||
|
||||
FILE VirtualFileSystem::OpenFile(const char* path)
|
||||
{
|
||||
// See reference material (1) https://man7.org/linux/man-pages/man7/path_resolution.7.html
|
||||
unsigned char device = 'a';
|
||||
char* filename = (char*)path;
|
||||
char* cpy = filename;
|
||||
|
||||
|
||||
if(filename[1] == ':'){
|
||||
device = filename[0];
|
||||
filename += 2;
|
||||
}
|
||||
|
||||
|
||||
if ( _filesystems[device - 'a']){
|
||||
// Unfortunately this way the FAT Driver doesn't know which device and which partition to read from
|
||||
// leaving us hopeless of finding the file.
|
||||
FILE file = _filesystems[device-'a']->Open(filename);
|
||||
file.device = device;
|
||||
free(cpy);
|
||||
return file;
|
||||
}
|
||||
|
||||
free(cpy);
|
||||
FILE file;
|
||||
file.flags = FS_INVALID;
|
||||
return file;
|
||||
}
|
||||
|
||||
void VirtualFileSystem::Mount(PFS filesystemDescriptor, unsigned int DeviceID)
|
||||
{
|
||||
if(DeviceID < DEVICE_MAX)
|
||||
if(filesystemDescriptor)
|
||||
_filesystems[DeviceID] = filesystemDescriptor;
|
||||
}
|
||||
|
||||
void VirtualFileSystem::Unmount(unsigned int DeviceID) {
|
||||
if(DeviceID < DEVICE_MAX)
|
||||
_filesystems[DeviceID] = nullptr;
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
@ -8,10 +8,13 @@
|
||||
static void initialize();
|
||||
static void Mount(PFS fs, unsigned int DeviceID);
|
||||
static void Unmount(unsigned int DeviceID);
|
||||
static void ResolvePath(Path& path);
|
||||
static FILE OpenFile(const char* path);
|
||||
static void RegisterPartition(PTR_PARTITION partition);
|
||||
|
||||
private:
|
||||
static const unsigned int DEVICE_MAX = 26;
|
||||
static const unsigned int PARTITION_MAX = 4 * DEVICE_MAX;
|
||||
static PFS _filesystems[DEVICE_MAX];
|
||||
|
||||
static unsigned int num_partitions;
|
||||
static PTR_PARTITION _partitions [PARTITION_MAX];
|
||||
};
|
||||
@ -1,8 +1,8 @@
|
||||
#include "superVisorTerminal.h"
|
||||
#include "../storage/ata pio/ataDevice.h"
|
||||
#include "../partitiontable/mbr/MasterBootRecord.h"
|
||||
#include "../filesystem/FAT/BiosParameterBlock.h"
|
||||
#include "../filesystem/FAT/DirectoryEntry.h"
|
||||
#include "../storage/ata pio/ATAPIO.h"
|
||||
#include "../storage/partitiontables/mbr/MasterBootRecord.h"
|
||||
#include "../storage/filesystems/FAT/BiosParameterBlock.h"
|
||||
#include "../storage/filesystems/FAT/DirectoryEntry.h"
|
||||
|
||||
bool isRunning = true;
|
||||
extern "C" void startSuperVisorTerminal()
|
||||
|
||||
23
scripts/create_harddrive.sh
Normal file → Executable file
23
scripts/create_harddrive.sh
Normal file → Executable file
@ -9,11 +9,8 @@
|
||||
|
||||
echo "Building a FAT16 filesystem"
|
||||
|
||||
|
||||
su
|
||||
|
||||
# dd if=/dev/zero of=diks.img bs=512 count=131072
|
||||
# fdisk disk.img
|
||||
dd if=/dev/zero of=disk.img bs=512 count=131072
|
||||
fdisk disk.img
|
||||
# Use the following options in fdisk (Format Disk Tool)
|
||||
# We want to create a MBR (NOT GPT) Partition table containing 1 logical disk
|
||||
# with a primary FAT16 partition marked bootable
|
||||
@ -42,23 +39,23 @@ su
|
||||
# w
|
||||
|
||||
# Create a "block" device from the disk.img
|
||||
# losetup /dev/loop9 disk.img
|
||||
losetup /dev/loop9 disk.img
|
||||
|
||||
# Format the partition on the disk as FAT16
|
||||
# mkdosfs -F16 /dev/loop9
|
||||
mkdosfs -F16 /dev/loop9
|
||||
|
||||
# Mount the disk to a folder on our dev machine
|
||||
# mount /dev/loop9 /mnt
|
||||
mount /dev/loop9 /mnt
|
||||
|
||||
# Install the grub bootloader onto the disk
|
||||
# grub-install --no-floppy --modules="normal multiboot" /dev/loop9 --target=i386-pc --boot-directory=/mnt/boot --force
|
||||
grub-install --no-floppy --modules="normal multiboot" /dev/loop9 --target=i386-pc --boot-directory=/mnt/boot --force
|
||||
|
||||
# copy the necessary OS files
|
||||
# cp root/boot/myos.bin /mnt/boot/myos.bin
|
||||
# cp root/boot/grub/grub.cfg /mnt/boot/grub/grub.cfg
|
||||
cp root/boot/myos.bin /mnt/boot/myos.bin
|
||||
cp root/boot/grub/grub.cfg /mnt/boot/grub/grub.cfg
|
||||
|
||||
# Unmount the device
|
||||
# umount /mnt
|
||||
umount /mnt
|
||||
|
||||
# Destroy the loop device
|
||||
# losetup -d /dev/loop9
|
||||
losetup -d /dev/loop9
|
||||
|
||||
Loading…
Reference in New Issue
Block a user