Chameleon

Chameleon Commit Details

Date:2011-06-26 02:12:02 (12 years 9 months 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