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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Sage Electronic Engineering, LLC
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <device/device.h>
#include <delay.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <arch/io.h>
#include "hudson.h"
static void sd_init(struct device *dev)
{
u32 stepping;
stepping = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x18, 3)), 0xFC);
struct southbridge_amd_pi_hudson_config *sd_chip =
(struct southbridge_amd_pi_hudson_config *)(dev->chip_info);
if (sd_chip->sd_mode == 3) { /* SD 3.0 mode */
pci_write_config32(dev, 0xA4, 0x31FEC8B2);
pci_write_config32(dev, 0xA8, 0x00002503);
pci_write_config32(dev, 0xB0, 0x02180C19);
pci_write_config32(dev, 0xD0, 0x0000078B);
}
else { /* SD 2.0 mode */
if ((stepping & 0x0000000F) == 0) { /* Stepping A0 */
pci_write_config32(dev, 0xA4, 0x31DE32B2);
pci_write_config32(dev, 0xB0, 0x01180C19);
pci_write_config32(dev, 0xD0, 0x0000058B);
}
else { /* Stepping >= A1 */
pci_write_config32(dev, 0xA4, 0x31FE3FB2);
pci_write_config32(dev, 0xB0, 0x01180C19);
pci_write_config32(dev, 0xD0, 0x0000078B);
}
}
}
static struct device_operations sd_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = sd_init,
.scan_bus = 0,
};
static const struct pci_driver sd_driver __pci_driver = {
.ops = &sd_ops,
.vendor = PCI_VENDOR_ID_AMD,
.device = PCI_DEVICE_ID_AMD_YANGTZE_SD,
};
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