diff --git a/features.md b/features.md
index 577e666..a6d8e97 100644
--- a/features.md
+++ b/features.md
@@ -1,14 +1,17 @@
# TODO list
## Basics
- Setup Cross-Compiler \
- Multiboot to kernel \
- Printing string to the screen \
+
+ Setup Cross-Compiler
+ Multiboot to kernel \
+ Printing string to the screen \
Printing values/numbers to the screen \
Basic Terminal \
Extend Multiboot implementation \
Output to serial port \
Move to protected mode \
- Enabel CMOS clock \
+ Enable CMOS clock \
Time measurement (PIC &| PIT) \
Detect CPU speed \
Interrupt / exception system (API) \
@@ -22,16 +25,13 @@
Virtual memory management \
The heap: allocating memory at runtime (malloc and free) is almost impossible to go without. \
Enable SIMD Extensions (SSE)
-
-## Other features I am thinking of:
PCI support \
- ATA PIO Mode support \
+ ATA PIO Mode support \
USTAR Filesystem ( For its simplicity this is very likely the first filesystem the OS is going to support) \
ACPI support ( Or some other basic way to support shutdown, reboot and possibly hibernation ) \
ATAPI support \
Memory Management (MMU)
Hardware Management system
-
Preemptive multi tasking \
Processes \
Threads
@@ -44,7 +44,6 @@
ACPI support \
ATAPI support \
-## Optional
Basic Window server/client \
EXT2 Filesystem
USTAR Filesystem \
diff --git a/source/kernel/drivers/ata/ataDevice.cpp b/source/kernel/drivers/ata/ataDevice.cpp
index 05947f1..873aa0e 100644
--- a/source/kernel/drivers/ata/ataDevice.cpp
+++ b/source/kernel/drivers/ata/ataDevice.cpp
@@ -128,7 +128,7 @@ void ATA_DEVICE::Read(uint16_t DEVICE_CHANNEL, DEVICE_DRIVE drive, uint32_t LBA
return ;
}
- printf("Read LBA: 0x%x\n", LBA);
+ //printf("Read LBA: 0x%x\n", LBA);
// Send 0xE0 for the "master" or 0xF0 for the "slave", ORed with the highest 4 bits of the LBA to port 0x1F6: outb(0x1F6, 0xE0 | (slavebit << 4) | ((LBA >> 24) & 0x0F))
outb(DEVICE_CHANNEL | 6 , ( 0xE0 | (LBA >>28) ) );
// Send a NULL byte to port 0x1F1, if you like (it is ignored and wastes lots of CPU time): outb(0x1F1, 0x00)
@@ -156,7 +156,7 @@ void ATA_DEVICE::Read(uint16_t DEVICE_CHANNEL, DEVICE_DRIVE drive, uint32_t LBA
return;
}
- printf("Status: %x\n", status);
+ //printf("Status: %x\n", status);
// Check if busy!
while((status & 0x80) == 0x80){
printf("Reading....\r");
diff --git a/source/kernel/drivers/ata/ataDevice.h b/source/kernel/drivers/ata/ataDevice.h
index 730de3c..30e75dc 100644
--- a/source/kernel/drivers/ata/ataDevice.h
+++ b/source/kernel/drivers/ata/ataDevice.h
@@ -10,7 +10,6 @@
* This first driver wil make use of IO ports.
* Doing so means reading or writing from disk is going
* to be very cpu intensive.
-*
*/
enum DEVICE_DRIVE{
@@ -18,9 +17,6 @@ enum DEVICE_DRIVE{
SLAVE = 0xB0
};
-
-
-
namespace ATA_DEVICE{
void Identify(uint16_t, DEVICE_DRIVE);
void Read (uint16_t, DEVICE_DRIVE, uint32_t, uint16_t*);
diff --git a/source/kernel/interrupts/idt.cpp b/source/kernel/interrupts/idt.cpp
index 7448de0..50acd47 100644
--- a/source/kernel/interrupts/idt.cpp
+++ b/source/kernel/interrupts/idt.cpp
@@ -308,8 +308,8 @@ void irq_handler (registers regs) {
break;
default:
- printf("Interrupt happened!");
- printf("Received INT: 0x%x\n", regs.int_no);
+ //printf("Interrupt happened!");
+ //printf("Received INT: 0x%x\n", regs.int_no);
break;
}
diff --git a/source/kernel/memory/KernelHeap.cpp b/source/kernel/memory/KernelHeap.cpp
index 4483d2d..c935fb1 100644
--- a/source/kernel/memory/KernelHeap.cpp
+++ b/source/kernel/memory/KernelHeap.cpp
@@ -1,7 +1,7 @@
#include "KernelHeap.h"
#include "VirtualMemoryManager.h"
extern "C" const uint32_t kernel_end;
-// Size of heap meta data is 5 bytes
+// Size of heap metadata is 5 bytes
struct heap_block{
uint8_t Used;
uint32_t Size;
@@ -12,7 +12,7 @@ heap_block* start ;
void* malloc(size_t size)
{
- printf("Received request for %d bytes of memory\n", size);
+ //printf("Received request for %d bytes of memory\n", size);
heap_block* current = start;
// look for a free block
@@ -21,14 +21,14 @@ void* malloc(size_t size)
if(current->Size >= size && current->Used == false )
{
// We found a spot
- printf("Block found!\n");
+ // printf("Block found!\n");
// Set the spot to in-use
current->Used = true;
// split the block
- printf("Split block.\n");
+ //printf("Split block.\n");
uint32_t oldSize = current->Size;
current->Size = size;
@@ -57,7 +57,7 @@ void free(void* addr)
{
// clear the free boolean that corresponds to this adddress
// This should be fairly simple
- heap_block* allocatedBlock = (heap_block*)(addr - sizeof(heap_block));
+ heap_block* allocatedBlock = (heap_block*)((uint32_t)addr - sizeof(heap_block));
allocatedBlock->Used = false;
}
diff --git a/source/kernel/supervisorterminal/superVisorTerminal.cpp b/source/kernel/supervisorterminal/superVisorTerminal.cpp
index f2790e8..d574b65 100644
--- a/source/kernel/supervisorterminal/superVisorTerminal.cpp
+++ b/source/kernel/supervisorterminal/superVisorTerminal.cpp
@@ -70,9 +70,17 @@ extern "C" void startSuperVisorTerminal()
kterm_init();
printf("|=== BarinkOS ===|\n");
}
- if(strncmp("LIST", command, characterCount) == 0)
+ if(strncmp("LIST", command, 4) == 0)
{
+
+ // slice off the command part
+ char args[characterCount - 4];
+ for(int i = 5 ; i < characterCount; i++) {
+ args[i] = command[i];
+ }
+
printf("=============== DIRECTORY LISTING =================\n");
+ printf("Path to show %s\n", args);
}
if(strncmp("DEVICES", command, characterCount) == 0){
diff --git a/source/kernel/vfs/VFS.cpp b/source/kernel/vfs/VFS.cpp
index 1c5cc17..cdb787c 100644
--- a/source/kernel/vfs/VFS.cpp
+++ b/source/kernel/vfs/VFS.cpp
@@ -80,7 +80,7 @@ bool driveAvailable(){
return true;
}
-MBR* getPartitions(){
+MBR* getPartitions(bool DEBUG = false){
const int C = 0;
const int H = 0;
const int HPC = 16;
@@ -92,67 +92,91 @@ MBR* getPartitions(){
ATA_DEVICE::Read(BUS_PORT::Primary, DEVICE_DRIVE::MASTER, LBA, (uint16_t*)mbr);
- printf("BootSector: 0x%x\n", mbr->ValidBootsector );
- for( int i = 0 ; i < 4 ; i ++){
- PartitionTableEntry PT = mbr->TableEntries[i];
+ if(DEBUG){
+ printf("BootSector: 0x%x\n", mbr->ValidBootsector );
+ for( int i = 0 ; i < 4 ; i ++){
+ PartitionTableEntry PT = mbr->TableEntries[i];
+
+ printf("Partition %d [ %d sectors, PartitionType: 0x%x, 0x%x, \nLBA Start: 0x%x ]\n" ,
+ i, PT.Number_sectors_inPartition, PT.PartitionType, mbr->uniqueID, PT.LBA_partition_start );
+ }
- printf("Partition %d [ %d sectors, PartitionType: %x, 0x%x, \nLBA Start: 0x%x ]\n" ,
- i, PT.Number_sectors_inPartition, PT.PartitionType, mbr->uniqueID, PT.LBA_partition_start );
}
return mbr;
}
-BiosParameterBlock* getBPB(MBR* mbr){
+BiosParameterBlock* getBPB(MBR* mbr, 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);
- printf("OEM ID: %s\n", bpb->OEM_id);
- printf("Bytes per sector: %d\n", bpb->BytesPerSector);
- printf("Sectors per cluster: %d\n", bpb->SectorsPerCluster);
- printf("Reserved sectors: %d\n", bpb->ReservedSectors);
- printf("Number of FAT: %d\n", bpb->NumberOfFileAllocationTables);
- printf("Number of Dir entries: %d\n", bpb->NumberOfDirectoryEntries);
- printf("Total Sectors in volume: %d\n", bpb->TotalSectorsInLogicalVolume);
- printf("Sectors per FAT: %d\n", bpb->NumberOfSectorsPerFAT);
+ if(DEBUG)
+ {
+ printf("OEM ID: %s\n", bpb->OEM_id);
+ printf("Bytes per sector: %d\n", bpb->BytesPerSector);
+ printf("Sectors per cluster: %d\n", bpb->SectorsPerCluster);
+ printf("Reserved sectors: %d\n", bpb->ReservedSectors);
+ printf("Number of FAT: %d\n", bpb->NumberOfFileAllocationTables);
+ printf("Number of Dir entries: %d\n", bpb->NumberOfDirectoryEntries);
+ printf("Total Sectors in volume: %d\n", bpb->TotalSectorsInLogicalVolume);
+ printf("Sectors per FAT: %d\n", bpb->NumberOfSectorsPerFAT);
+ }
+
return bpb;
}
-uint16_t* ReadFAT (BiosParameterBlock& bpb , MBR& mbr) {
+uint16_t* ReadFAT (BiosParameterBlock& bpb , MBR& mbr, bool DEBUG = false ) {
uint32_t FATAddress = mbr.TableEntries[0].LBA_partition_start + bpb.ReservedSectors ;
uint16_t* FAT = (uint16_t*)malloc(sizeof (uint16_t) * 256);
ATA_DEVICE::Read(BUS_PORT::Primary, DEVICE_DRIVE::MASTER, FATAddress, FAT );
// Show data in terminal
- /*
- for(unsigned short i : FAT) {
- printf("%x ", i);
+ if(DEBUG){
+ for( unsigned int i =0 ; i < 256 ; i++) {
+ printf("0x%x ", (unsigned short)FAT[i]);
+ }
+ kterm_put('\n');
}
- kterm_put('\n');*/
return FAT;
-
}
+void readFile(uint32_t DataRegion, DirectoryEntry* entry, uint16_t FATentry, BiosParameterBlock& bpb ){
+ printf("Show contents");
+ printf("Start cluster of the file: 0x%x\n", entry->StartingCluster);
+
+ printf("IS it only 1 cluster? %s\n", FATentry == 0xFFFF ? "Yes" : "No");
+
+ uint32_t sector = DataRegion + ((entry->StartingCluster - 0x02) * bpb.SectorsPerCluster);
+
+
+ uint16_t dataBlob[256];
+ ATA_DEVICE::Read(BUS_PORT::Primary, DEVICE_DRIVE::MASTER, sector, dataBlob);
+ for (unsigned short n: dataBlob) {
+ kterm_put(n & 0x00ff);
+
+ kterm_put(n >> 8);
+ }
+ 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 );
uint32_t DataRegion = RootDirectoryRegion + ((bpb.NumberOfDirectoryEntries * 32) / bpb.BytesPerSector );
uint16_t* FAT = ReadFAT(bpb, mbr);
-
uint16_t data2 [256];
ATA_DEVICE::Read(BUS_PORT::Primary, DEVICE_DRIVE::MASTER, RootDirectoryRegion, data2 );
auto* RootDirectory = (DirectoryEntry*) data2;
+
// List files in root
- for(int i= 0; i < bpb.NumberOfDirectoryEntries ; i++ ) {
+ for(int i= 0; i < sizeof (data2) / sizeof (DirectoryEntry); i++ ) {
auto *entry = (DirectoryEntry * )((uint32_t) RootDirectory + (i * sizeof(DirectoryEntry)));
if (entry->filename[0] == (uint8_t) 0x00)
- break; // There are no more entries in this directory or the entry is free
+ continue; // There are no more entries in this directory or the entry is free
if ((entry->attribute & 0x01) == 0x01 || (entry->attribute & 0x20) == 0x20)
continue; // Skip listing if hidden or Achieve flag is set
@@ -163,40 +187,21 @@ void listFilesInRoot(MBR& mbr, BiosParameterBlock& bpb ){
break;
kterm_put(n);
}
- kterm_put('\n');
-
for (unsigned char n: entry->Extension) {
kterm_put(n);
}
kterm_put('\n');
+
printf("Attribute: %x \n", entry->attribute);
printf("FileSize: %d Bytes\n", entry->FilesizeInBytes);
- if (entry->FilesizeInBytes != 0x0 || (entry->attribute & 0x8) == 0x0) {
- printf("Show contents");
-
- printf("Start cluster of the file: 0x%x\n", entry->StartingCluster);
-
- printf("IS it only 1 cluster? %s\n", FAT[i] == 0xFFFF ? "Yes" : "No");
-
- uint32_t sector = DataRegion + ((entry->StartingCluster - 0x02) * bpb.SectorsPerCluster);
-
-
- uint16_t dataBlob[256];
- ATA_DEVICE::Read(BUS_PORT::Primary, DEVICE_DRIVE::MASTER, sector, dataBlob);
- for (unsigned short n: dataBlob) {
- kterm_put(n & 0x00ff);
-
- kterm_put(n >> 8);
- }
- kterm_put('\n');
-
-
+ if (entry->FilesizeInBytes != 0x0 && (entry->attribute == 0x08)) {
+ readFile(DataRegion,entry, FAT[i], bpb);
}
- printf("======================\n");
}
+ free(FAT);
}
@@ -341,6 +346,9 @@ void FileSystem::initialize()
MBR* mbr = getPartitions();
BiosParameterBlock* bootsector = getBPB(mbr);
listFilesInRoot(*mbr, *bootsector);
+
+ free(mbr);
+ free(bootsector);
/*
mountInfo.numSectors = bootsector->NumberOfSectorsPerFAT;
mountInfo.fatOffset = 1;
@@ -348,7 +356,8 @@ void FileSystem::initialize()
mountInfo.fatEntrySize = 8;
mountInfo.numRootEntries = bootsector->NumberOfDirectoryEntries;
mountInfo.rootOffset = (bootsector->NumberOfFileAllocationTables * bootsector->NumberOfSectorsPerFAT) + 1;
- mountInfo.rootSize = (bootsector->NumberOfDirectoryEntries * 32) / bootsector->BytesPerSector;*/
+ mountInfo.rootSize = (bootsector->NumberOfDirectoryEntries * 32) / bootsector->BytesPerSector;
+*/
}
\ No newline at end of file
diff --git a/todo.md b/todo.md
index a47a9f3..cb71d04 100644
--- a/todo.md
+++ b/todo.md
@@ -13,9 +13,9 @@ to do on a more in depth level.
[x] Setup a proper HEAP \
[ ] Setup a proper Stack \
[x] Setup KMalloc and KFree \
-[ ] Merge Functioning Feature branches into sandboxKernelDev \
+[x] Merge Functioning Feature branches into sandboxKernelDev \
[ ] Remove merged feature branches \
[ ] Merge sandboxKernelDev with dev \
-[ ] Remove sandboxKernelDev branch \
+[x] Remove sandboxKernelDev branch \
[ ] Implement proper virtual filesystem