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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
* Copyright (C) 2010 Advanced Micro Devices, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <option.h>
#include "sb700.h"
static void ide_init(struct device *dev)
{
struct southbridge_amd_sb700_config *conf;
/* Enable ide devices so the linux ide driver will work */
u32 dword;
u8 byte;
uint8_t nvram;
uint8_t sata_ahci_mode;
sata_ahci_mode = 0;
if (get_option(&nvram, "sata_ahci_mode") == CB_SUCCESS)
sata_ahci_mode = !!nvram;
conf = dev->chip_info;
/* RPR9.1 disable MSI */
/* TODO: For A14, it should set as 1. I doubt it. */
dword = pci_read_config32(dev, 0x70);
dword &= ~(1 << 16);
pci_write_config32(dev, 0x70, dword);
if (!sata_ahci_mode) {
/* Enable UDMA on all devices, it will become UDMA0 (default PIO is PIO0) */
byte = pci_read_config8(dev, 0x54);
byte |= 0xf;
pci_write_config8(dev, 0x54, byte);
/* Enable I/O Access&& Bus Master */
dword = pci_read_config16(dev, 0x4);
dword |= 1 << 2;
pci_write_config16(dev, 0x4, dword);
/* set ide as primary, if you want to boot from IDE, you'd better set it
* in $vendor/$mainboard/devicetree.cb */
if (conf->boot_switch_sata_ide == 1) {
struct device *sm_dev = pcidev_on_root(0x14, 0);
byte = pci_read_config8(sm_dev, 0xad);
byte |= 1 << 4;
pci_write_config8(sm_dev, 0xad, byte);
}
}
}
static struct pci_operations lops_pci = {
.set_subsystem = pci_dev_set_subsystem,
};
static struct device_operations ide_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = ide_init,
.scan_bus = 0,
.ops_pci = &lops_pci,
};
static const struct pci_driver ide_driver __pci_driver = {
.ops = &ide_ops,
.vendor = PCI_VENDOR_ID_ATI,
.device = PCI_DEVICE_ID_ATI_SB700_IDE,
};
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