From a7ff9c59a1e71da0ab956395dfa92287a81d7ac3 Mon Sep 17 00:00:00 2001 From: Lance Zhao Date: Thu, 12 Nov 2015 18:19:41 -0800 Subject: soc/apollolake: Add lpc device driver A dedicated pci device driver required for LPC devices as the legacy IO range need to be included to avoid IO resource confilict. Blindly set to 0~0x1000 to also avoid the IO resource of COMA/COMB/LPT/FDD and LPC.Without this driver system will have assertion on load RTC DXE driver in UEFI payloads. Change-Id: Icc462c159c2cf39cc1030d55acee79e73a6bfb35 Signed-off-by: Lance Zhao Reviewed-on: https://review.coreboot.org/13356 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin Reviewed-by: Martin Roth --- src/soc/intel/apollolake/lpc.c | 48 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 src/soc/intel/apollolake/lpc.c (limited to 'src/soc/intel/apollolake/lpc.c') diff --git a/src/soc/intel/apollolake/lpc.c b/src/soc/intel/apollolake/lpc.c new file mode 100644 index 0000000000..abc5245376 --- /dev/null +++ b/src/soc/intel/apollolake/lpc.c @@ -0,0 +1,48 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2016 Intel Corp. + * (Written by Lance Zhao for Intel Corp.) + * + * 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; either version 2 of the License, or + * (at your option) any later version. + */ + +#include +#include +#include +#include + +static void soc_lpc_add_io_resources(device_t dev) +{ + struct resource *res; + + /* Add the default claimed legacy IO range for the LPC device. */ + res = new_resource(dev, 0); + res->base = 0; + res->size = 0x1000; + res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; +} + +static void soc_lpc_read_resources(device_t dev) +{ + /* Get the PCI resources of this device. */ + pci_dev_read_resources(dev); + + /* Add IO resources to LPC. */ + soc_lpc_add_io_resources(dev); +} + +static struct device_operations device_ops = { + .read_resources = &soc_lpc_read_resources, + .set_resources = &pci_dev_set_resources, + .enable_resources = &pci_dev_enable_resources, +}; + +static const struct pci_driver soc_lpc __pci_driver = { + .ops = &device_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_APOLLOLAKE_LPC, +}; -- cgit v1.2.3