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, 31 insertions, 6 deletions

diff --git a/src/southbridge/via/vt8231/vt8231_lpc.c b/src/southbridge/via/vt8231/vt8231_lpc.c
index 4b906359b0..fb2f29be61 100644
--- a/src/southbridge/via/vt8231/vt8231_lpc.c
+++ b/src/southbridge/via/vt8231/vt8231_lpc.c
@@ -131,6 +131,24 @@ static void vt8231_init(struct device *dev)
 	rtc_init(0);
 }
 
+void vt8231_read_resources(device_t dev)
+{
+	struct resource *res;
+
+	pci_dev_read_resources(dev);
+
+	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;
+}
+
 static void southbridge_init(struct device *dev)
 {
 	vt8231_init(dev);
@@ -138,7 +156,7 @@ static void southbridge_init(struct device *dev)
 }
 
 static struct device_operations vt8231_lpc_ops = {
-	.read_resources   = pci_dev_read_resources,
+	.read_resources   = vt8231_read_resources,
 	.set_resources    = pci_dev_set_resources,
 	.enable_resources = pci_dev_enable_resources,
 	.init		  = &southbridge_init,
diff --git a/src/southbridge/via/vt8235/vt8235_lpc.c b/src/southbridge/via/vt8235/vt8235_lpc.c
index 521271d1a8..67f602b9b4 100644
--- a/src/southbridge/via/vt8235/vt8235_lpc.c
+++ b/src/southbridge/via/vt8235/vt8235_lpc.c
@@ -219,15 +219,22 @@ static void vt8235_init(struct device *dev)
    device has a resource to set - so set a dummy one */
 void vt8235_read_resources(device_t dev)
 {
+	struct resource *res;
 
-	struct resource *resource;
 	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 vt8235_set_resources(device_t dev)
 {
 	struct resource *resource;