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Move the v3 resource allocator to v2.

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

49
src/cpu/amd/sc520/sc520.c
View File

@ -62,9 +62,27 @@ void sc520_enable_resources(struct device *dev) {
}
static void sc520_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 struct device_operations cpu_operations = {
.read_resources = pci_dev_read_resources,
.read_resources = sc520_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = sc520_enable_resources,
.init = cpu_init,
@ -78,25 +96,6 @@ static const struct pci_driver cpu_driver __pci_driver = {
.device = 0x3000
};
#define BRIDGE_IO_MASK (IORESOURCE_IO | IORESOURCE_MEM)
static void pci_domain_read_resources(device_t dev)
{
struct resource *resource;
printk_spew("%s\n", __func__);
/* 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)
{
@ -184,14 +183,6 @@ 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)
{
printk_spew("%s\n", __func__);
max = pci_scan_bus(&dev->link[0], PCI_DEVFN(0, 0), 0xff, max);
return max;
}
#if 0
void sc520_enable_resources(device_t dev) {
@ -219,7 +210,7 @@ static struct device_operations pci_domain_ops = {
* If enable_resources is set to the generic enable_resources
* function the whole thing will hang in an endless loop on
* the ts5300. If this is really needed on another platform,
* something is conceptionally wrong.
* something is conceptually wrong.
*/
.enable_resources = 0, //enable_resources,
.init = 0,