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/*
* This file is part of the coreboot project.
*
* 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_ops.h>
#include <device/pci_def.h>
#include <amdblocks/sata.h>
#include <soc/southbridge.h>
void soc_enable_sata_features(struct device *dev)
{
u8 *ahci_ptr;
u32 misc_ctl, cap_cfg;
u32 temp;
/* unlock the write-protect */
misc_ctl = pci_read_config32(dev, SATA_MISC_CONTROL_REG);
misc_ctl |= SATA_MISC_SUBCLASS_WREN;
pci_write_config32(dev, SATA_MISC_CONTROL_REG, misc_ctl);
/* set the SATA AHCI mode to allow port expanders */
ahci_ptr = (u8 *)(uintptr_t)ALIGN_DOWN(
pci_read_config32(dev, PCI_BASE_ADDRESS_5), 256);
cap_cfg = read32(ahci_ptr + SATA_CAPABILITIES_REG);
cap_cfg |= SATA_CAPABILITY_SPM;
write32(ahci_ptr + SATA_CAPABILITIES_REG, cap_cfg);
/* lock the write-protect */
temp = pci_read_config32(dev, SATA_MISC_CONTROL_REG);
temp &= ~SATA_MISC_SUBCLASS_WREN;
pci_write_config32(dev, SATA_MISC_CONTROL_REG, temp);
};
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