From d0310faa3bc4d3b62d17d632fbaee98c146eebe0 Mon Sep 17 00:00:00 2001 From: Arthur Heymans Date: Wed, 2 Oct 2019 00:21:01 +0200 Subject: sb/intel/ibexpeak: Implement PCH function disable in chip_ops MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This does the following: - implement a PCH disable function that will be called by the PCI drivers as part of their chip_ops - removes the iobp_x calls as those don't exist on ibexpeak - complete the devicetree with to be disabled PCI devices for the chip_ops to be called - Clean up some code copied from bd82x6x Change-Id: I78d25ffe9af482c77d397a9fdb4f0127e40baddc Signed-off-by: Arthur Heymans Reviewed-on: https://review.coreboot.org/c/coreboot/+/35753 Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki --- src/southbridge/intel/ibexpeak/pch.c | 107 +++++++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 src/southbridge/intel/ibexpeak/pch.c (limited to 'src/southbridge/intel/ibexpeak/pch.c') diff --git a/src/southbridge/intel/ibexpeak/pch.c b/src/southbridge/intel/ibexpeak/pch.c new file mode 100644 index 0000000000..9148b44a8e --- /dev/null +++ b/src/southbridge/intel/ibexpeak/pch.c @@ -0,0 +1,107 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * Copyright 2013 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. + */ + +#include +#include +#include +#include +#include +#include "pch.h" + +/* Set bit in function disable register to hide this device */ +static void pch_disable_devfn(struct device *dev) +{ + switch (dev->path.pci.devfn) { + case PCI_DEVFN(22, 0): /* MEI #1 */ + RCBA32_OR(FD2, PCH_DISABLE_MEI1); + break; + case PCI_DEVFN(22, 1): /* MEI #2 */ + RCBA32_OR(FD2, PCH_DISABLE_MEI2); + break; + case PCI_DEVFN(22, 2): /* IDE-R */ + RCBA32_OR(FD2, PCH_DISABLE_IDER); + break; + case PCI_DEVFN(22, 3): /* KT */ + RCBA32_OR(FD2, PCH_DISABLE_KT); + break; + case PCI_DEVFN(25, 0): /* Gigabit Ethernet */ + RCBA32_OR(BUC, PCH_DISABLE_GBE); + break; + case PCI_DEVFN(26, 0): /* EHCI #2 */ + RCBA32_OR(FD, PCH_DISABLE_EHCI2); + break; + case PCI_DEVFN(27, 0): /* HD Audio Controller */ + RCBA32_OR(FD, PCH_DISABLE_HD_AUDIO); + break; + case PCI_DEVFN(28, 0): /* PCI Express Root Port 1 */ + case PCI_DEVFN(28, 1): /* PCI Express Root Port 2 */ + case PCI_DEVFN(28, 2): /* PCI Express Root Port 3 */ + case PCI_DEVFN(28, 3): /* PCI Express Root Port 4 */ + case PCI_DEVFN(28, 4): /* PCI Express Root Port 5 */ + case PCI_DEVFN(28, 5): /* PCI Express Root Port 6 */ + case PCI_DEVFN(28, 6): /* PCI Express Root Port 7 */ + case PCI_DEVFN(28, 7): /* PCI Express Root Port 8 */ + RCBA32_OR(FD, PCH_DISABLE_PCIE(PCI_FUNC(dev->path.pci.devfn))); + break; + case PCI_DEVFN(29, 0): /* EHCI #1 */ + RCBA32_OR(FD, PCH_DISABLE_EHCI1); + break; + case PCI_DEVFN(31, 0): /* LPC */ + RCBA32_OR(FD, PCH_DISABLE_LPC); + break; + case PCI_DEVFN(31, 2): /* SATA #1 */ + RCBA32_OR(FD, PCH_DISABLE_SATA1); + break; + case PCI_DEVFN(31, 3): /* SMBUS */ + RCBA32_OR(FD, PCH_DISABLE_SMBUS); + break; + case PCI_DEVFN(31, 5): /* SATA #22 */ + RCBA32_OR(FD, PCH_DISABLE_SATA2); + break; + case PCI_DEVFN(31, 6): /* Thermal Subsystem */ + RCBA32_OR(FD, PCH_DISABLE_THERMAL); + break; + } +} + +void pch_enable(struct device *dev) +{ + u32 reg32; + + 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); + } +} + +struct chip_operations southbridge_intel_ibexpeak_ops = { + CHIP_NAME("Intel Series 5 (Ibexpeak) Southbridge") + .enable_dev = pch_enable, +}; -- cgit v1.2.3