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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 <lijian.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/13356
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Lance Zhao 2015-11-12 18:19:41 -08:00 committed by Martin Roth
parent 2fc82d699d
commit a7ff9c59a1
2 changed files with 49 additions and 0 deletions
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1
src/soc/intel/apollolake/Makefile.inc
View File

@ -34,6 +34,7 @@ ramstage-y += chip.c
ramstage-y += placeholders.c ramstage-y += placeholders.c
ramstage-y += gpio.c ramstage-y += gpio.c
ramstage-$(CONFIG_SOC_UART_DEBUG) += uart_early.c ramstage-$(CONFIG_SOC_UART_DEBUG) += uart_early.c
ramstage-y += lpc.c
ramstage-y += memmap.c ramstage-y += memmap.c
ramstage-y += mmap_boot.c ramstage-y += mmap_boot.c
ramstage-y += uart.c ramstage-y += uart.c

48
src/soc/intel/apollolake/lpc.c Normal file
View File

@ -0,0 +1,48 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2016 Intel Corp.
* (Written by Lance Zhao <lijian.zhao@intel.com> 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 <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <soc/pci_ids.h>
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,
};