Chameleon

Chameleon Commit Details

Date:2011-06-26 02:12:02 (8 years 27 days ago)
Author:Evan Lojewski
Commit:1084
Parents: 1083
Message:BiosDisk Read() function working. Write() complete but untested
Changes:
M/branches/rewrite/i386/modules/BiosDisk/include/Disk.hpp
M/branches/rewrite/i386/modules/BiosDisk/Main.cpp
M/branches/rewrite/i386/modules/BiosDisk/BiosDisk.cpp

File differences

branches/rewrite/i386/modules/BiosDisk/include/Disk.hpp
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virtual IOReturn Read(UInt64 sector, UInt64 size, UInt8* buffer) = 0;
virtual IOReturn Write(UInt64 sector, UInt64 size, UInt8* buffer) = 0;
virtual bool isValid() { return mName != NULL && mBytesPerSector; };
virtual bool isValid() { return mName != NULL && mBytesPerSector; };
virtual UInt32 bytesPerSector() { return mBytesPerSector; };
protected:
const char *mName;
const char *mBusType;
branches/rewrite/i386/modules/BiosDisk/Main.cpp
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void BiosDisk_start()
{
UInt8* mbr = (UInt8*)malloc(512);
BiosDisk* disk = new BiosDisk("bios:/hd0/");
disk->Read(0, 1, mbr);
printf("mbr[0] = 0x%X\n", mbr[0]);
printf("mbr[510] = 0x%X\n", mbr[510]);
printf("mbr[511] = 0x%X\n", mbr[511]);
printf("This is a simple BootDisk_start test.\n");
delete disk;
halt();
}
branches/rewrite/i386/modules/BiosDisk/BiosDisk.cpp
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IOReturn BiosDisk::Read(UInt64 sector, UInt64 size, UInt8* buffer)
{
if(!isValid()) return kIOReturnNoDevice;
return kIOReturnSuccess;
// Assume EBIOS capable for now...
if(EBIOSRead(sector, size) == 0)
{
bcopy((void*)BIOS_ADDR, buffer, size * mBytesPerSector);
return kIOReturnSuccess;
}
else return kIOReturnIOError;
}
IOReturn BiosDisk::Write(UInt64 sector, UInt64 size, UInt8* buffer)
{
if(!isValid()) return kIOReturnNoDevice;
return kIOReturnNotWritable;
bcopy(buffer, (void*)BIOS_ADDR, size * mBytesPerSector);
if(EBIOSWrite(sector, size) == 0)
{
return kIOReturnSuccess;
}
else return kIOReturnIOError;
}
UInt8 BiosDisk::BIOSRead(UInt16 cylinder, UInt8 head, UInt8 sector, UInt8 count)
{
if(sector == 0) return -1;
sector++; // starts at 1
biosBuf_t bb;
int i;

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Revision: 1084