Rename devices -> device

to match src/include/device

Change-Id: I5d0e5b4361c34881a3b81347aac48738cb5b9af0
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1960
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>

1 files changed, 870 insertions, 0 deletions

diff --git a/src/device/device_util.c b/src/device/device_util.c
new file mode 100644
index 0000000000..224c58ee64
--- /dev/null
+++ b/src/device/device_util.c
@@ -0,0 +1,870 @@
+/*
+ * 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 Greg Watson <jarrah@users.sourceforge.net>
+ * Copyright (C) 2004 Li-Ta Lo <ollie@lanl.gov>
+ * Copyright (C) 2005-2006 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
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/path.h>
+#include <device/pci.h>
+#include <device/resource.h>
+#include <string.h>
+
+/**
+ * See if a device structure exists for path.
+ *
+ * @param parent The bus to find the device on.
+ * @param path The relative path from the bus to the appropriate device.
+ * @return Pointer to a device structure for the device on bus at path
+ *         or 0/NULL if no device is found.
+ */
+device_t find_dev_path(struct bus *parent, struct device_path *path)
+{
+	device_t child;
+	for (child = parent->children; child; child = child->sibling) {
+		if (path_eq(path, &child->path))
+			break;
+	}
+	return child;
+}
+
+/**
+ * Given a PCI bus and a devfn number, find the device structure.
+ *
+ * @param bus The bus number.
+ * @param devfn A device/function number.
+ * @return Pointer to the device structure (if found), 0 otherwise.
+ */
+struct device *dev_find_slot(unsigned int bus, unsigned int devfn)
+{
+	struct device *dev, *result;
+
+	result = 0;
+	for (dev = all_devices; dev; dev = dev->next) {
+		if ((dev->path.type == DEVICE_PATH_PCI) &&
+		    (dev->bus->secondary == bus) &&
+		    (dev->path.pci.devfn == devfn)) {
+			result = dev;
+			break;
+		}
+	}
+	return result;
+}
+
+/**
+ * Given an SMBus bus and a device number, find the device structure.
+ *
+ * @param bus The bus number.
+ * @param addr A device number.
+ * @return Pointer to the device structure (if found), 0 otherwise.
+ */
+struct device *dev_find_slot_on_smbus(unsigned int bus, unsigned int addr)
+{
+	struct device *dev, *result;
+
+	result = 0;
+	for (dev = all_devices; dev; dev = dev->next) {
+		if ((dev->path.type == DEVICE_PATH_I2C) &&
+		    (dev->bus->secondary == bus) &&
+		    (dev->path.i2c.device == addr)) {
+			result = dev;
+			break;
+		}
+	}
+	return result;
+}
+
+/**
+ * Given a Local APIC ID, find the device structure.
+ *
+ * @param apic_id The Local APIC ID number.
+ * @return Pointer to the device structure (if found), 0 otherwise.
+ */
+device_t dev_find_lapic(unsigned apic_id)
+{
+	device_t dev, result = NULL;
+
+	for (dev = all_devices; dev; dev = dev->next) {
+		if (dev->path.type == DEVICE_PATH_APIC &&
+		    dev->path.apic.apic_id == apic_id) {
+			result = dev;
+			break;
+		}
+	}
+	return result;
+}
+
+/**
+ * Find a device of a given vendor and type.
+ *
+ * @param vendor A PCI vendor ID (e.g. 0x8086 for Intel).
+ * @param device A PCI device ID.
+ * @param from Pointer to the device structure, used as a starting point in
+ *             the linked list of all_devices, which can be 0 to start at the
+ *             head of the list (i.e. all_devices).
+ * @return Pointer to the device struct.
+ */
+struct device *dev_find_device(u16 vendor, u16 device, struct device *from)
+{
+	if (!from)
+		from = all_devices;
+	else
+		from = from->next;
+
+	while (from && (from->vendor != vendor || from->device != device))
+		from = from->next;
+
+	return from;
+}
+
+/**
+ * Find a device of a given class.
+ *
+ * @param class Class of the device.
+ * @param from Pointer to the device structure, used as a starting point in
+ *             the linked list of all_devices, which can be 0 to start at the
+ *             head of the list (i.e. all_devices).
+ * @return Pointer to the device struct.
+ */
+struct device *dev_find_class(unsigned int class, struct device *from)
+{
+	if (!from)
+		from = all_devices;
+	else
+		from = from->next;
+
+	while (from && (from->class & 0xffffff00) != class)
+		from = from->next;
+
+	return from;
+}
+
+/*
+ * Warning: This function uses a static buffer. Don't call it more than once
+ * from the same print statement!
+ */
+const char *dev_path(device_t dev)
+{
+	static char buffer[DEVICE_PATH_MAX];
+
+	buffer[0] = '\0';
+	if (!dev) {
+		memcpy(buffer, "<null>", 7);
+	} else {
+		switch(dev->path.type) {
+		case DEVICE_PATH_ROOT:
+			memcpy(buffer, "Root Device", 12);
+			break;
+		case DEVICE_PATH_PCI:
+#if CONFIG_PCI_BUS_SEGN_BITS
+			sprintf(buffer, "PCI: %04x:%02x:%02x.%01x",
+				dev->bus->secondary >> 8,
+				dev->bus->secondary & 0xff,
+				PCI_SLOT(dev->path.pci.devfn),
+				PCI_FUNC(dev->path.pci.devfn));
+#else
+			sprintf(buffer, "PCI: %02x:%02x.%01x",
+				dev->bus->secondary,
+				PCI_SLOT(dev->path.pci.devfn),
+				PCI_FUNC(dev->path.pci.devfn));
+#endif
+			break;
+		case DEVICE_PATH_PNP:
+			sprintf(buffer, "PNP: %04x.%01x",
+				dev->path.pnp.port, dev->path.pnp.device);
+			break;
+		case DEVICE_PATH_I2C:
+			sprintf(buffer, "I2C: %02x:%02x",
+				dev->bus->secondary,
+				dev->path.i2c.device);
+			break;
+		case DEVICE_PATH_APIC:
+			sprintf(buffer, "APIC: %02x",
+				dev->path.apic.apic_id);
+			break;
+		case DEVICE_PATH_IOAPIC:
+			sprintf(buffer, "IOAPIC: %02x",
+				dev->path.ioapic.ioapic_id);
+			break;
+		case DEVICE_PATH_PCI_DOMAIN:
+			sprintf(buffer, "PCI_DOMAIN: %04x",
+				dev->path.pci_domain.domain);
+			break;
+		case DEVICE_PATH_APIC_CLUSTER:
+			sprintf(buffer, "APIC_CLUSTER: %01x",
+				dev->path.apic_cluster.cluster);
+			break;
+		case DEVICE_PATH_CPU:
+			sprintf(buffer, "CPU: %02x", dev->path.cpu.id);
+			break;
+		case DEVICE_PATH_CPU_BUS:
+			sprintf(buffer, "CPU_BUS: %02x", dev->path.cpu_bus.id);
+			break;
+		default:
+			printk(BIOS_ERR, "Unknown device path type: %d\n",
+			       dev->path.type);
+			break;
+		}
+	}
+	return buffer;
+}
+
+const char *dev_name(device_t dev)
+{
+	if (dev->name)
+		return dev->name;
+	else if (dev->chip_ops && dev->chip_ops->name)
+		return dev->chip_ops->name;
+	else
+		return "unknown";
+}
+
+const char *bus_path(struct bus *bus)
+{
+	static char buffer[BUS_PATH_MAX];
+	sprintf(buffer, "%s,%d", dev_path(bus->dev), bus->link_num);
+	return buffer;
+}
+
+int path_eq(struct device_path *path1, struct device_path *path2)
+{
+	int equal = 0;
+
+	if (path1->type != path2->type)
+		return 0;
+
+	switch (path1->type) {
+	case DEVICE_PATH_NONE:
+		break;
+	case DEVICE_PATH_ROOT:
+		equal = 1;
+		break;
+	case DEVICE_PATH_PCI:
+		equal = (path1->pci.devfn == path2->pci.devfn);
+		break;
+	case DEVICE_PATH_PNP:
+		equal = (path1->pnp.port == path2->pnp.port) &&
+			(path1->pnp.device == path2->pnp.device);
+		break;
+	case DEVICE_PATH_I2C:
+		equal = (path1->i2c.device == path2->i2c.device);
+		break;
+	case DEVICE_PATH_APIC:
+		equal = (path1->apic.apic_id == path2->apic.apic_id);
+		break;
+	case DEVICE_PATH_PCI_DOMAIN:
+		equal = (path1->pci_domain.domain == path2->pci_domain.domain);
+		break;
+	case DEVICE_PATH_APIC_CLUSTER:
+		equal = (path1->apic_cluster.cluster
+			 == path2->apic_cluster.cluster);
+		break;
+	case DEVICE_PATH_CPU:
+		equal = (path1->cpu.id == path2->cpu.id);
+		break;
+	case DEVICE_PATH_CPU_BUS:
+		equal = (path1->cpu_bus.id == path2->cpu_bus.id);
+		break;
+	default:
+		printk(BIOS_ERR, "Uknown device type: %d\n", path1->type);
+		break;
+	}
+
+	return equal;
+}
+
+/**
+ * Allocate 64 more resources to the free list.
+ *
+ * @return TODO.
+ */
+static int allocate_more_resources(void)
+{
+	int i;
+	struct resource *new_res_list;
+
+	new_res_list = malloc(64 * sizeof(*new_res_list));
+
+	if (new_res_list == NULL)
+		return 0;
+
+	memset(new_res_list, 0, 64 * sizeof(*new_res_list));
+
+	for (i = 0; i < 64 - 1; i++)
+		new_res_list[i].next = &new_res_list[i+1];
+
+	free_resources = new_res_list;
+	return 1;
+}
+
+/**
+ * Remove resource res from the device's list and add it to the free list.
+ *
+ * @param dev TODO
+ * @param res TODO
+ * @param prev TODO
+ * @return TODO.
+ */
+static void free_resource(device_t dev, struct resource *res,
+			  struct resource *prev)
+{
+	if (prev)
+		prev->next = res->next;
+	else
+		dev->resource_list = res->next;
+
+	res->next = free_resources;
+	free_resources = res;
+}
+
+/**
+ * See if we have unused but allocated resource structures.
+ *
+ * If so remove the allocation.
+ *
+ * @param dev The device to find the resource on.
+ */
+void compact_resources(device_t dev)
+{
+	struct resource *res, *next, *prev = NULL;
+
+	/* Move all of the free resources to the end */
+	for (res = dev->resource_list; res; res = next) {
+		next = res->next;
+		if (!res->flags)
+			free_resource(dev, res, prev);
+		else
+			prev = res;
+	}
+}
+
+/**
+ * See if a resource structure already exists for a given index.
+ *
+ * @param dev The device to find the resource on.
+ * @param index The index of the resource on the device.
+ * @return The resource, if it already exists.
+ */
+struct resource *probe_resource(device_t dev, unsigned index)
+{
+	struct resource *res;
+
+	/* See if there is a resource with the appropriate index */
+	for (res = dev->resource_list; res; res = res->next) {
+		if (res->index == index)
+			break;
+	}
+
+	return res;
+}
+
+/**
+ * See if a resource structure already exists for a given index and if not
+ * allocate one.
+ *
+ * Then initialize the initialize the resource to default values.
+ *
+ * @param dev The device to find the resource on.
+ * @param index The index of the resource on the device.
+ * @return TODO.
+ */
+struct resource *new_resource(device_t dev, unsigned index)
+{
+	struct resource *resource, *tail;
+
+	/* First move all of the free resources to the end. */
+	compact_resources(dev);
+
+	/* See if there is a resource with the appropriate index. */
+	resource = probe_resource(dev, index);
+	if (!resource) {
+		if (free_resources == NULL && !allocate_more_resources())
+			die("Couldn't allocate more resources.");
+
+		resource = free_resources;
+		free_resources = free_resources->next;
+		memset(resource, 0, sizeof(*resource));
+		resource->next = NULL;
+		tail = dev->resource_list;
+		if (tail) {
+			while (tail->next) tail = tail->next;
+			tail->next = resource;
+		} else {
+			dev->resource_list = resource;
+		}
+	}
+
+	/* Initialize the resource values. */
+	if (!(resource->flags & IORESOURCE_FIXED)) {
+		resource->flags = 0;
+		resource->base = 0;
+	}
+	resource->size  = 0;
+	resource->limit = 0;
+	resource->index = index;
+	resource->align = 0;
+	resource->gran  = 0;
+
+	return resource;
+}
+
+/**
+ * Return an existing resource structure for a given index.
+ *
+ * @param dev The device to find the resource on.
+ * @param index The index of the resource on the device.
+ * return TODO.
+ */
+struct resource *find_resource(device_t dev, unsigned index)
+{
+	struct resource *resource;
+
+	/* See if there is a resource with the appropriate index. */
+	resource = probe_resource(dev, index);
+	if (!resource) {
+		printk(BIOS_EMERG, "%s missing resource: %02x\n",
+		       dev_path(dev), index);
+		die("");
+	}
+	return resource;
+}
+
+/**
+ * Round a number up to the next multiple of gran.
+ *
+ * @param val The starting value.
+ * @param gran Granularity we are aligning the number to.
+ * @return The aligned value.
+ */
+static resource_t align_up(resource_t val, unsigned long gran)
+{
+	resource_t mask;
+	mask = (1ULL << gran) - 1ULL;
+	val += mask;
+	val &= ~mask;
+	return val;
+}
+
+/**
+ * Round a number up to the previous multiple of gran.
+ *
+ * @param val The starting value.
+ * @param gran Granularity we are aligning the number to.
+ * @return The aligned value.
+ */
+static resource_t align_down(resource_t val, unsigned long gran)
+{
+	resource_t mask;
+	mask = (1ULL << gran) - 1ULL;
+	val &= ~mask;
+	return val;
+}
+
+/**
+ * Compute the maximum address that is part of a resource.
+ *
+ * @param resource The resource whose limit is desired.
+ * @return The end.
+ */
+resource_t resource_end(struct resource *resource)
+{
+	resource_t base, end;
+
+	/* Get the base address. */
+	base = resource->base;
+
+	/*
+	 * For a non bridge resource granularity and alignment are the same.
+	 * For a bridge resource align is the largest needed alignment below
+	 * the bridge. While the granularity is simply how many low bits of
+	 * the address cannot be set.
+	 */
+
+	/* Get the end (rounded up). */
+	end = base + align_up(resource->size, resource->gran) - 1;
+
+	return end;
+}
+
+/**
+ * Compute the maximum legal value for resource->base.
+ *
+ * @param resource The resource whose maximum is desired.
+ * @return The maximum.
+ */
+resource_t resource_max(struct resource *resource)
+{
+	resource_t max;
+
+	max = align_down(resource->limit - resource->size + 1, resource->align);
+
+	return max;
+}
+
+/**
+ * Return the resource type of a resource.
+ *
+ * @param resource The resource type to decode.
+ * @return TODO.
+ */
+const char *resource_type(struct resource *resource)
+{
+	static char buffer[RESOURCE_TYPE_MAX];
+	sprintf(buffer, "%s%s%s%s",
+		((resource->flags & IORESOURCE_READONLY) ? "ro" : ""),
+		((resource->flags & IORESOURCE_PREFETCH) ? "pref" : ""),
+		((resource->flags == 0) ? "unused" :
+		(resource->flags & IORESOURCE_IO) ? "io" :
+		(resource->flags & IORESOURCE_DRQ) ? "drq" :
+		(resource->flags & IORESOURCE_IRQ) ? "irq" :
+		(resource->flags & IORESOURCE_MEM) ? "mem" : "??????"),
+		((resource->flags & IORESOURCE_PCI64) ? "64" : ""));
+	return buffer;
+}
+
+/**
+ * Print the resource that was just stored.
+ *
+ * @param dev The device the stored resorce lives on.
+ * @param resource The resource that was just stored.
+ * @param comment TODO
+ */
+void report_resource_stored(device_t dev, struct resource *resource,
+			    const char *comment)
+{
+	char buf[10];
+	unsigned long long base, end;
+
+	if (!(resource->flags & IORESOURCE_STORED))
+		return;
+
+	base = resource->base;
+	end = resource_end(resource);
+	buf[0] = '\0';
+
+	if (resource->flags & IORESOURCE_PCI_BRIDGE) {
+#if CONFIG_PCI_BUS_SEGN_BITS
+		sprintf(buf, "bus %04x:%02x ", dev->bus->secondary >> 8,
+			dev->link_list->secondary & 0xff);
+#else
+		sprintf(buf, "bus %02x ", dev->link_list->secondary);
+#endif
+	}
+	printk(BIOS_DEBUG, "%s %02lx <- [0x%010llx - 0x%010llx] size 0x%08llx "
+	       "gran 0x%02x %s%s%s\n", dev_path(dev), resource->index,
+		base, end, resource->size, resource->gran, buf,
+		resource_type(resource), comment);
+}
+
+void search_bus_resources(struct bus *bus, unsigned long type_mask,
+			  unsigned long type, resource_search_t search,
+			  void *gp)
+{
+	struct device *curdev;
+
+	for (curdev = bus->children; curdev; curdev = curdev->sibling) {
+		struct resource *res;
+
+		/* Ignore disabled devices. */
+		if (!curdev->enabled)
+			continue;
+
+		for (res = curdev->resource_list; res; res = res->next) {
+			/* If it isn't the right kind of resource ignore it. */
+			if ((res->flags & type_mask) != type)
+				continue;
+
+			/* If it is a subtractive resource recurse. */
+			if (res->flags & IORESOURCE_SUBTRACTIVE) {
+				struct bus * subbus;
+				for (subbus = curdev->link_list; subbus;
+				     subbus = subbus->next)
+					if (subbus->link_num
+					== IOINDEX_SUBTRACTIVE_LINK(res->index))
+						break;
+				if (!subbus) /* Why can subbus be NULL?  */
+					break;
+				search_bus_resources(subbus, type_mask, type,
+						     search, gp);
+				continue;
+			}
+			search(gp, curdev, res);
+		}
+	}
+}
+
+void search_global_resources(unsigned long type_mask, unsigned long type,
+			     resource_search_t search, void *gp)
+{
+	struct device *curdev;
+
+	for (curdev = all_devices; curdev; curdev = curdev->next) {
+		struct resource *res;
+
+		/* Ignore disabled devices. */
+		if (!curdev->enabled)
+			continue;
+
+		for (res = curdev->resource_list; res; res = res->next) {
+			/* If it isn't the right kind of resource ignore it. */
+			if ((res->flags & type_mask) != type)
+				continue;
+
+			/* If it is a subtractive resource ignore it. */
+			if (res->flags & IORESOURCE_SUBTRACTIVE)
+				continue;
+
+			search(gp, curdev, res);
+		}
+	}
+}
+
+void dev_set_enabled(device_t dev, int enable)
+{
+	if (dev->enabled == enable)
+		return;
+
+	dev->enabled = enable;
+	if (dev->ops && dev->ops->enable) {
+		dev->ops->enable(dev);
+	} else if (dev->chip_ops && dev->chip_ops->enable_dev) {
+		dev->chip_ops->enable_dev(dev);
+	}
+}
+
+void disable_children(struct bus *bus)
+{
+	device_t child;
+
+	for (child = bus->children; child; child = child->sibling) {
+		struct bus *link;
+		for (link = child->link_list; link; link = link->next)
+			disable_children(link);
+		dev_set_enabled(child, 0);
+	}
+}
+
+static void resource_tree(struct device *root, int debug_level, int depth)
+{
+	int i = 0;
+	struct device *child;
+	struct bus *link;
+	struct resource *res;
+	char indent[30];	/* If your tree has more levels, it's wrong. */
+
+	for (i = 0; i < depth + 1 && i < 29; i++)
+		indent[i] = ' ';
+	indent[i] = '\0';
+
+ 	do_printk(BIOS_DEBUG, "%s%s", indent, dev_path(root));
+ 	if (root->link_list && root->link_list->children)
+ 		do_printk(BIOS_DEBUG, " child on link 0 %s",
+ 			  dev_path(root->link_list->children));
+ 	do_printk(BIOS_DEBUG, "\n");
+
+	for (res = root->resource_list; res; res = res->next) {
+		do_printk(debug_level, "%s%s resource base %llx size %llx "
+			  "align %d gran %d limit %llx flags %lx index %lx\n",
+			  indent, dev_path(root), res->base, res->size,
+			  res->align, res->gran, res->limit, res->flags,
+			  res->index);
+	}
+
+	for (link = root->link_list; link; link = link->next) {
+		for (child = link->children; child; child = child->sibling)
+			resource_tree(child, debug_level, depth + 1);
+	}
+}
+
+void print_resource_tree(struct device *root, int debug_level, const char *msg)
+{
+	/* Bail if root is null. */
+	if (!root) {
+		do_printk(debug_level, "%s passed NULL for root!\n", __func__);
+		return;
+	}
+
+	/* Bail if not printing to screen. */
+	if (!do_printk(debug_level, "Show resources in subtree (%s)...%s\n",
+		       dev_path(root), msg))
+		return;
+
+	resource_tree(root, debug_level, 0);
+}
+
+void show_devs_tree(struct device *dev, int debug_level, int depth, int linknum)
+{
+	char depth_str[20] = "";
+	int i;
+	struct device *sibling;
+	struct bus *link;
+
+	for (i = 0; i < depth; i++)
+		depth_str[i] = ' ';
+	depth_str[i] = '\0';
+
+	do_printk(debug_level, "%s%s: enabled %d\n",
+		  depth_str, dev_path(dev), dev->enabled);
+
+	for (link = dev->link_list; link; link = link->next) {
+		for (sibling = link->children; sibling;
+		     sibling = sibling->sibling)
+			show_devs_tree(sibling, debug_level, depth + 1, i);
+	}
+}
+
+void show_all_devs_tree(int debug_level, const char *msg)
+{
+	/* Bail if not printing to screen. */
+	if (!do_printk(debug_level, "Show all devs in tree form...%s\n", msg))
+		return;
+	show_devs_tree(all_devices, debug_level, 0, -1);
+}
+
+void show_devs_subtree(struct device *root, int debug_level, const char *msg)
+{
+	/* Bail if not printing to screen. */
+	if (!do_printk(debug_level, "Show all devs in subtree %s...%s\n",
+		       dev_path(root), msg))
+		return;
+	do_printk(debug_level, "%s\n", msg);
+	show_devs_tree(root, debug_level, 0, -1);
+}
+
+void show_all_devs(int debug_level, const char *msg)
+{
+	struct device *dev;
+
+	/* Bail if not printing to screen. */
+	if (!do_printk(debug_level, "Show all devs...%s\n", msg))
+		return;
+	for (dev = all_devices; dev; dev = dev->next) {
+		do_printk(debug_level, "%s: enabled %d\n",
+			  dev_path(dev), dev->enabled);
+	}
+}
+
+void show_one_resource(int debug_level, struct device *dev,
+		       struct resource *resource, const char *comment)
+{
+	char buf[10];
+	unsigned long long base, end;
+	base = resource->base;
+	end = resource_end(resource);
+	buf[0] = '\0';
+
+/*
+	if (resource->flags & IORESOURCE_BRIDGE) {
+#if CONFIG_PCI_BUS_SEGN_BITS
+		sprintf(buf, "bus %04x:%02x ", dev->bus->secondary >> 8,
+			dev->link[0].secondary & 0xff);
+#else
+		sprintf(buf, "bus %02x ", dev->link[0].secondary);
+#endif
+	}
+*/
+
+	do_printk(debug_level, "%s %02lx <- [0x%010llx - 0x%010llx] "
+		  "size 0x%08llx gran 0x%02x %s%s%s\n", dev_path(dev),
+		  resource->index, base, end, resource->size, resource->gran,
+		  buf, resource_type(resource), comment);
+}
+
+void show_all_devs_resources(int debug_level, const char* msg)
+{
+	struct device *dev;
+
+	if (!do_printk(debug_level, "Show all devs with resources...%s\n", msg))
+		return;
+
+	for (dev = all_devices; dev; dev = dev->next) {
+		struct resource *res;
+		do_printk(debug_level, "%s: enabled %d\n",
+			  dev_path(dev), dev->enabled);
+		for (res = dev->resource_list; res; res = res->next)
+			show_one_resource(debug_level, dev, res, "");
+	}
+}
+
+void fixed_mem_resource(device_t dev, unsigned long index,
+		  unsigned long basek, unsigned long sizek, unsigned long type)
+{
+	struct resource *resource;
+
+	if (!sizek)
+		return;
+
+	resource = new_resource(dev, index);
+	resource->base = ((resource_t)basek) << 10;
+	resource->size = ((resource_t)sizek) << 10;
+	resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED |
+		 IORESOURCE_STORED | IORESOURCE_ASSIGNED;
+
+	resource->flags |= type;
+}
+
+void tolm_test(void *gp, struct device *dev, struct resource *new)
+{
+	struct resource **best_p = gp;
+	struct resource *best;
+
+	best = *best_p;
+
+	if (!best || (best->base > new->base))
+		best = new;
+
+	*best_p = best;
+}
+
+u32 find_pci_tolm(struct bus *bus)
+{
+	struct resource *min = NULL;
+	u32 tolm;
+
+	search_bus_resources(bus, IORESOURCE_MEM, IORESOURCE_MEM,
+			     tolm_test, &min);
+
+	tolm = 0xffffffffUL;
+
+	if (min && tolm > min->base)
+		tolm = min->base;
+
+	return tolm;
+}
+
+/* Count of enabled CPUs */
+int dev_count_cpu(void)
+{
+	device_t cpu;
+	int count = 0;
+
+	for (cpu = all_devices; cpu; cpu = cpu->next) {
+		if ((cpu->path.type != DEVICE_PATH_APIC) ||
+		    (cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER))
+			continue;
+		if (!cpu->enabled)
+			continue;
+		count++;
+	}
+
+	return count;
+}