No. ATA drives (also known as IDE drives) do not need any firmware or ROM changes to work in present-day Macs. They generally do not need any drivers either. They are simply generic devices.
You people are remembering Apple's old SCSI implementation. Because SCSI devices have a device manufacturer and type visible to the host, Apple used this to implement a kind of protection racket. This resulted in a market for third-party drivers such as Anubis, and a lot of wasted time and aggravation. It was stupid and shortsighted.
ATA is a crappier hardware design than SCSI, but it doesn't expose any such labelling, so the protection racket is no longer possible. Attach any hard drive, CD-ROM, CD-RW, DVD-ROM or whatever to your Mac, and it will work.