How to run AHCI option rom in Seabios?

[Аладышев Константин]

I'm trying to enable SATA hotplug (in OS) feature on my board. And one of my
attempts is to run AHCI option rom from original BIOS.

I use coreboot/seabios bundle with seabios responsible for option ROM
execution. And I stuck with a problem, that seabios doesn't want to run ROM
on SATA controllers cause of pci->have_driver check:

optionroms.c

:

// Find and deploy PCI roms.

struct pci_device *pci;

foreachpci(pci) {

if (pci->class == PCI_CLASS_DISPLAY_VGA || pci->have_driver)

continue;

init_pcirom(pci, 0, sources);

}

:

ata.c:

:.

// Handle controllers on an ATA PCI device.

static void

init_pciata(struct pci_device *pci, u8 prog_if)

{

pci->have_driver = 1;

:.

So, what is a proper way to run roms like AHCI on SATA controllers?

(in my case SATA controller is embedded device in southbridge)

[Kevin O'Connor]

On Tue, Jun 13, 2017 at 03:35:43PM +0300, Аладышев Константин wrote:
> So, what is a proper way to run roms like AHCI on SATA controllers?
>
> (in my case SATA controller is embedded device in southbridge)

Currently, the only way to do that is to disable CONFIG_AHCI in
SeaBIOS.

-Kevin