Move the v3 resource allocator to v2.

Major changes:
1. Separate resource allocation into:
	A. Read Resources
	B. Avoid fixed resources (constrain limits)
	C. Allocate resources
	D. Set resources

Usage notes:
Resources which have IORESOURCE_FIXED set in the flags constrain the placement
of other resources.  All fixed resources will end up outside (above or below) 
the allocated resources.

Domains usually start with base = 0 and limit = 2^address_bits - 1.

I've added an IOAPIC to all platforms so that the old limit of 0xfec00000 is
still there for resources.  Some platforms may want to change that, but I didn't
want to break anyone's board.

Resources are allocated in a single block for memory and another for I/O.
Currently the resource allocator doesn't support holes.

Signed-off-by: Myles Watson <mylesgw@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Patrick Georgi <patrick.georgi@coresystems.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4394 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

2 files changed, 11 insertions, 27 deletions

diff --git a/src/northbridge/via/cx700/cx700_lpc.c b/src/northbridge/via/cx700/cx700_lpc.c
index 65275baa81..217b174d65 100644
--- a/src/northbridge/via/cx700/cx700_lpc.c
+++ b/src/northbridge/via/cx700/cx700_lpc.c
@@ -329,7 +329,7 @@ static void cx700_set_lpc_registers(struct device *dev)
 
 void cx700_read_resources(device_t dev)
 {
-	struct resource *resource;
+	struct resource *res;
 
 	/* Make sure we call our childrens set/enable functions - these
 	 * are not called unless this device has a resource to set.
@@ -337,11 +337,16 @@ void cx700_read_resources(device_t dev)
 
 	pci_dev_read_resources(dev);
 
-	resource = new_resource(dev, 1);
-	resource->flags |=
-	    IORESOURCE_FIXED | IORESOURCE_ASSIGNED | IORESOURCE_IO | IORESOURCE_STORED;
-	resource->size = 2;
-	resource->base = 0x2e;
+	res = new_resource(dev, 1);
+	res->base = 0x0UL;
+	res->size = 0x400UL;
+	res->limit = 0xffffUL;
+	res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+	res = new_resource(dev, 3); /* IOAPIC */
+	res->base = 0xfec00000;
+	res->size = 0x00001000;
+	res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
 }
 
 void cx700_set_resources(device_t dev)
diff --git a/src/northbridge/via/cx700/northbridge.c b/src/northbridge/via/cx700/northbridge.c
index 7c09b9495b..82ea062023 100644
--- a/src/northbridge/via/cx700/northbridge.c
+++ b/src/northbridge/via/cx700/northbridge.c
@@ -32,21 +32,6 @@
 #include "chip.h"
 #include "northbridge.h"
 
-static void pci_domain_read_resources(device_t dev)
-{
-	struct resource *resource;
-
-	/* Initialize the system wide io space constraints */
-	resource = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
-	resource->limit = 0xffffUL;
-	resource->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
-
-	/* Initialize the system wide memory resources constraints */
-	resource = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
-	resource->limit = 0xffffffffULL;
-	resource->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
-}
-
 static void ram_resource(device_t dev, unsigned long index,
 			 unsigned long basek, unsigned long sizek)
 {
@@ -146,12 +131,6 @@ static void pci_domain_set_resources(device_t dev)
 	assign_resources(&dev->link[0]);
 }
 
-static unsigned int pci_domain_scan_bus(device_t dev, unsigned int max)
-{
-	max = pci_scan_bus(&dev->link[0], PCI_DEVFN(0, 0), 0xff, max);
-	return max;
-}
-
 static struct device_operations pci_domain_ops = {
 	.read_resources	  = pci_domain_read_resources,
 	.set_resources	  = pci_domain_set_resources,