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Move the v3 resource allocator to v2.

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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
This commit is contained in:
Myles Watson
2009-07-02 18:56:24 +00:00
parent 2468331952
commit 29cc9eda20
62 changed files with 1508 additions and 1591 deletions
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21
src/southbridge/amd/cs5536/cs5536.c
View File

@@ -607,6 +607,25 @@ static void southbridge_init(struct device *dev)
}
}
static void cs5536_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_enable(struct device *dev)
{
printk_err("cs5536: %s: dev is %p\n", __func__, dev);
@@ -621,7 +640,7 @@ static void cs5536_pci_dev_enable_resources(device_t dev)
}
static struct device_operations southbridge_ops = {
.read_resources = pci_dev_read_resources,
.read_resources = cs5536_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = cs5536_pci_dev_enable_resources,
.init = southbridge_init,