Factor out a few commonly duplicated functions from northbridge.c.

The following functions are moved to devices/device_util.c:

 - ram_resource()

 - tolm_test()

 - find_pci_tolm()

There are only two tolm_test() / find_pci_tolm() which differ from the
defaults, one of them can easily be eliminated in a follow-up patch,
maybe even both, but for now keep it simple and only eliminate the majority.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5937 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/devices/device_util.c

@@ -730,3 +730,47 @@ void show_all_devs_resources(int debug_level, const char* msg)
 			show_one_resource(debug_level, dev, res, "");
 	}
 }
+
+void ram_resource(device_t dev, unsigned long index,
+		  unsigned long basek, unsigned long sizek)
+{
+	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_CACHEABLE | \
+		IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED;
+}
+
+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;
+}