From 29cc9eda2021a87396ef31a6fc81daff6fd1be7a Mon Sep 17 00:00:00 2001 From: Myles Watson Date: Thu, 2 Jul 2009 18:56:24 +0000 Subject: 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 Acked-by: Ronald G. Minnich Acked-by: Patrick Georgi git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4394 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/southbridge/amd/cs5536/cs5536.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) (limited to 'src/southbridge/amd/cs5536') diff --git a/src/southbridge/amd/cs5536/cs5536.c b/src/southbridge/amd/cs5536/cs5536.c index 4169275b6f..002335d6b2 100644 --- a/src/southbridge/amd/cs5536/cs5536.c +++ b/src/southbridge/amd/cs5536/cs5536.c @@ -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, -- cgit v1.2.3