coreboot-kgpe-d16/src/device/root_device.c

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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2003-2004 Linux Networx
* (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx)
* Copyright (C) 2003 Ronald G. Minnich <rminnich@gmail.com>
* Copyright (C) 2004-2005 Li-Ta Lo <ollie@lanl.gov>
* Copyright (C) 2005 Tyan
* (Written by Yinghai Lu <yhlu@tyan.com> for Tyan)
*
* 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
Remove address from GPLv2 headers As per discussion with lawyers[tm], it's not a good idea to shorten the license header too much - not for legal reasons but because there are tools that look for them, and giving them a standard pattern simplifies things. However, we got confirmation that we don't have to update every file ever added to coreboot whenever the FSF gets a new lease, but can drop the address instead. util/kconfig is excluded because that's imported code that we may want to synchronize every now and then. $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *MA[, ]*02110-1301[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 59 Temple Place[-, ]*Suite 330, Boston, MA *02111-1307[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.:Foundation, Inc.:" {} + $ find * -type f -a \! -name \*.patch \ -a \! -name \*_shipped \ -a \! -name LICENSE_GPL \ -a \! -name LGPL.txt \ -a \! -name COPYING \ -a \! -name DISCLAIMER \ -exec sed -i "/Foundation, Inc./ N;s:Foundation, Inc.* USA\.* *:Foundation, Inc. :;s:Foundation, Inc. $:Foundation, Inc.:" {} + Change-Id: Icc968a5a5f3a5df8d32b940f9cdb35350654bef9 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/9233 Tested-by: build bot (Jenkins) Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
2015-03-26 15:17:45 +01:00
* Foundation, Inc.
*/
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <reset.h>
const char mainboard_name[] = CONFIG_MAINBOARD_VENDOR " " CONFIG_MAINBOARD_PART_NUMBER;
/**
* Scan devices on static buses.
*
* The enumeration of certain buses is purely static. The existence of
* devices on those buses can be completely determined at compile time
* and is specified in the config file. Typical examples are the 'PNP'
* devices on a legacy ISA/LPC bus. There is no need of probing of any kind,
* the only thing we have to do is to walk through the bus and
* enable or disable devices as indicated in the config file.
*
* On the other hand, some devices are virtual and their existence is
* artificial. They can not be probed at run time. One example is the
* debug device. Those virtual devices have to be listed in the config
* file under some static bus in order to be enumerated at run time.
*
* @param bus Pointer to the device to which the static buses are attached to.
* @param max Maximum bus number currently used before scanning.
* @return The largest bus number used.
*/
static unsigned int scan_static_bus(device_t bus, unsigned int passthru)
{
device_t child;
struct bus *link;
for (link = bus->link_list; link; link = link->next) {
for (child = link->children; child; child = child->sibling) {
if (child->chip_ops && child->chip_ops->enable_dev)
child->chip_ops->enable_dev(child);
if (child->ops && child->ops->enable)
child->ops->enable(child);
printk(BIOS_DEBUG, "%s %s\n", dev_path(child),
child->enabled ? "enabled" : "disabled");
}
}
return passthru;
}
unsigned int scan_lpc_bus(device_t bus, unsigned int passthru)
{
printk(BIOS_SPEW, "%s for %s\n", __func__, dev_path(bus));
scan_static_bus(bus, 0);
printk(BIOS_SPEW, "%s for %s done\n", __func__, dev_path(bus));
return passthru;
}
unsigned int scan_smbus(device_t bus, unsigned int passthru)
{
device_t child;
struct bus *link;
static int smbus_max = 0;
printk(BIOS_SPEW, "%s for %s\n", __func__, dev_path(bus));
for (link = bus->link_list; link; link = link->next) {
link->secondary = ++smbus_max;
for (child = link->children; child; child = child->sibling) {
if (child->chip_ops && child->chip_ops->enable_dev)
child->chip_ops->enable_dev(child);
if (child->ops && child->ops->enable)
child->ops->enable(child);
printk(BIOS_DEBUG, "smbus: %s[%d]->", dev_path(child->bus->dev),
child->bus->link_num);
printk(BIOS_DEBUG, "%s %s\n", dev_path(child),
child->enabled ? "enabled" : "disabled");
}
}
printk(BIOS_SPEW, "%s for %s done\n", __func__, dev_path(bus));
return passthru;
}
/**
* Scan root bus for generic systems.
*
* This function is the default scan_bus() method of the root device.
*
* @param root The root device structure.
* @param max The current bus number scanned so far, usually 0x00.
* @return The largest bus number used.
*/
static unsigned int root_dev_scan_bus(device_t bus, unsigned int passthru)
{
struct bus *link;
printk(BIOS_SPEW, "%s for %s\n", __func__, dev_path(bus));
scan_static_bus(bus, 0);
for (link = bus->link_list; link; link = link->next)
scan_bridges(link);
printk(BIOS_SPEW, "%s for %s done\n", __func__, dev_path(bus));
return passthru;
}
static void root_dev_reset(struct bus *bus)
{
printk(BIOS_INFO, "Resetting board...\n");
hard_reset();
}
/**
* Default device operation for root device.
*
* This is the default device operation for root devices. These operations
* should be fully usable as is. However the chip_operations::enable_dev()
* of a motherboard can override this if you want non-default behavior.
*/
struct device_operations default_dev_ops_root = {
.read_resources = DEVICE_NOOP,
.set_resources = DEVICE_NOOP,
.enable_resources = DEVICE_NOOP,
.init = DEVICE_NOOP,
.scan_bus = root_dev_scan_bus,
.reset_bus = root_dev_reset,
};