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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008-2009 coresystems GmbH
* Copyright (C) 2014 Google 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.
*
* 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 <console/console.h>
#include <delay.h>
#include <arch/io.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_def.h>
#include <soc/iobp.h>
#include <soc/pch.h>
#include <soc/pci_devs.h>
#include <soc/ramstage.h>
#include <soc/rcba.h>
#include <soc/serialio.h>
#include <soc/spi.h>
u8 pch_revision(void)
{
return pci_read_config8(PCH_DEV_LPC, PCI_REVISION_ID);
}
u16 pch_type(void)
{
return pci_read_config16(PCH_DEV_LPC, PCI_DEVICE_ID);
}
/* Return 1 if PCH type is WildcatPoint */
int pch_is_wpt(void)
{
return ((pch_type() & 0xfff0) == 0x9cc0) ? 1 : 0;
}
/* Return 1 if PCH type is WildcatPoint ULX */
int pch_is_wpt_ulx(void)
{
u16 lpcid = pch_type();
switch (lpcid) {
case PCH_WPT_BDW_Y_SAMPLE:
case PCH_WPT_BDW_Y_PREMIUM:
case PCH_WPT_BDW_Y_BASE:
return 1;
}
return 0;
}
u32 pch_read_soft_strap(int id)
{
u32 fdoc;
fdoc = SPIBAR32(SPIBAR_FDOC);
fdoc &= ~0x00007ffc;
SPIBAR32(SPIBAR_FDOC) = fdoc;
fdoc |= 0x00004000;
fdoc |= id * 4;
SPIBAR32(SPIBAR_FDOC) = fdoc;
return SPIBAR32(SPIBAR_FDOD);
}
#ifndef __PRE_RAM__
/* Put device in D3Hot Power State */
static void pch_enable_d3hot(device_t dev)
{
u32 reg32 = pci_read_config32(dev, PCH_PCS);
reg32 |= PCH_PCS_PS_D3HOT;
pci_write_config32(dev, PCH_PCS, reg32);
}
/* Set bit in Function Disable register to hide this device */
void pch_disable_devfn(device_t dev)
{
switch (dev->path.pci.devfn) {
case PCH_DEVFN_ADSP: /* Audio DSP */
RCBA32_OR(FD, PCH_DISABLE_ADSPD);
break;
case PCH_DEVFN_XHCI: /* XHCI */
RCBA32_OR(FD, PCH_DISABLE_XHCI);
break;
case PCH_DEVFN_SDMA: /* DMA */
pch_enable_d3hot(dev);
pch_iobp_update(SIO_IOBP_FUNCDIS0, ~0UL, SIO_IOBP_FUNCDIS_DIS);
break;
case PCH_DEVFN_I2C0: /* I2C0 */
pch_enable_d3hot(dev);
pch_iobp_update(SIO_IOBP_FUNCDIS1, ~0UL, SIO_IOBP_FUNCDIS_DIS);
break;
case PCH_DEVFN_I2C1: /* I2C1 */
pch_enable_d3hot(dev);
pch_iobp_update(SIO_IOBP_FUNCDIS2, ~0UL, SIO_IOBP_FUNCDIS_DIS);
break;
case PCH_DEVFN_SPI0: /* SPI0 */
pch_enable_d3hot(dev);
pch_iobp_update(SIO_IOBP_FUNCDIS3, ~0UL, SIO_IOBP_FUNCDIS_DIS);
break;
case PCH_DEVFN_SPI1: /* SPI1 */
pch_enable_d3hot(dev);
pch_iobp_update(SIO_IOBP_FUNCDIS4, ~0UL, SIO_IOBP_FUNCDIS_DIS);
break;
case PCH_DEVFN_UART0: /* UART0 */
pch_enable_d3hot(dev);
pch_iobp_update(SIO_IOBP_FUNCDIS5, ~0UL, SIO_IOBP_FUNCDIS_DIS);
break;
case PCH_DEVFN_UART1: /* UART1 */
pch_enable_d3hot(dev);
pch_iobp_update(SIO_IOBP_FUNCDIS6, ~0UL, SIO_IOBP_FUNCDIS_DIS);
break;
case PCH_DEVFN_ME: /* MEI #1 */
RCBA32_OR(FD2, PCH_DISABLE_MEI1);
break;
case PCH_DEVFN_ME_2: /* MEI #2 */
RCBA32_OR(FD2, PCH_DISABLE_MEI2);
break;
case PCH_DEVFN_ME_IDER: /* IDE-R */
RCBA32_OR(FD2, PCH_DISABLE_IDER);
break;
case PCH_DEVFN_ME_KT: /* KT */
RCBA32_OR(FD2, PCH_DISABLE_KT);
break;
case PCH_DEVFN_SDIO: /* SDIO */
pch_enable_d3hot(dev);
pch_iobp_update(SIO_IOBP_FUNCDIS7, ~0UL, SIO_IOBP_FUNCDIS_DIS);
break;
case PCH_DEVFN_GBE: /* Gigabit Ethernet */
RCBA32_OR(BUC, PCH_DISABLE_GBE);
break;
case PCH_DEVFN_HDA: /* HD Audio Controller */
RCBA32_OR(FD, PCH_DISABLE_HD_AUDIO);
break;
case PCI_DEVFN(PCH_DEV_SLOT_PCIE, 0): /* PCI Express Root Port 1 */
case PCI_DEVFN(PCH_DEV_SLOT_PCIE, 1): /* PCI Express Root Port 2 */
case PCI_DEVFN(PCH_DEV_SLOT_PCIE, 2): /* PCI Express Root Port 3 */
case PCI_DEVFN(PCH_DEV_SLOT_PCIE, 3): /* PCI Express Root Port 4 */
case PCI_DEVFN(PCH_DEV_SLOT_PCIE, 4): /* PCI Express Root Port 5 */
case PCI_DEVFN(PCH_DEV_SLOT_PCIE, 5): /* PCI Express Root Port 6 */
case PCI_DEVFN(PCH_DEV_SLOT_PCIE, 6): /* PCI Express Root Port 7 */
case PCI_DEVFN(PCH_DEV_SLOT_PCIE, 7): /* PCI Express Root Port 8 */
RCBA32_OR(FD, PCH_DISABLE_PCIE(PCI_FUNC(dev->path.pci.devfn)));
break;
case PCH_DEVFN_EHCI: /* EHCI #1 */
RCBA32_OR(FD, PCH_DISABLE_EHCI1);
break;
case PCH_DEVFN_LPC: /* LPC */
RCBA32_OR(FD, PCH_DISABLE_LPC);
break;
case PCH_DEVFN_SATA: /* SATA #1 */
RCBA32_OR(FD, PCH_DISABLE_SATA1);
break;
case PCH_DEVFN_SMBUS: /* SMBUS */
RCBA32_OR(FD, PCH_DISABLE_SMBUS);
break;
case PCH_DEVFN_SATA2: /* SATA #2 */
RCBA32_OR(FD, PCH_DISABLE_SATA2);
break;
case PCH_DEVFN_THERMAL: /* Thermal Subsystem */
RCBA32_OR(FD, PCH_DISABLE_THERMAL);
break;
}
}
void broadwell_pch_enable_dev(device_t dev)
{
u32 reg32;
/* These devices need special enable/disable handling */
switch (PCI_SLOT(dev->path.pci.devfn)) {
case PCH_DEV_SLOT_PCIE:
case PCH_DEV_SLOT_EHCI:
case PCH_DEV_SLOT_HDA:
return;
}
if (!dev->enabled) {
printk(BIOS_DEBUG, "%s: Disabling device\n", dev_path(dev));
/* Ensure memory, io, and bus master are all disabled */
reg32 = pci_read_config32(dev, PCI_COMMAND);
reg32 &= ~(PCI_COMMAND_MASTER |
PCI_COMMAND_MEMORY | PCI_COMMAND_IO);
pci_write_config32(dev, PCI_COMMAND, reg32);
/* Disable this device if possible */
pch_disable_devfn(dev);
} else {
/* Enable SERR */
reg32 = pci_read_config32(dev, PCI_COMMAND);
reg32 |= PCI_COMMAND_SERR;
pci_write_config32(dev, PCI_COMMAND, reg32);
}
}
#endif
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