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

15
src/include/device/resource.h
View File

@@ -1,5 +1,5 @@
#ifndef RESOURCE_H
#define RESOURCE_H
#ifndef DEVICE_RESOURCE_H
#define DEVICE_RESOURCE_H
#include <stdint.h>
@@ -19,6 +19,7 @@
#define IORESOURCE_SUBTRACTIVE 0x00040000 /* This resource filters all of the unclaimed transactions
* to the bus below.
*/
#define IORESOURCE_BRIDGE 0x00080000 /* The IO resource has a bus below it. */
#define IORESOURCE_STORED 0x20000000 /* The IO resource assignment has been stored in the device */
#define IORESOURCE_ASSIGNED 0x40000000 /* An IO resource that has been assigned a value */
#define IORESOURCE_FIXED 0x80000000 /* An IO resource the allocator must not change */
@@ -62,7 +63,7 @@
#define IORESOURCE_MEM_EXPANSIONROM (1<<6)
typedef uint64_t resource_t;
typedef u64 resource_t;
struct resource {
resource_t base; /* Base address of the resource */
resource_t size; /* Size of the resource */
@@ -74,10 +75,14 @@ struct resource {
/* Alignment must be >= the granularity of the resource */
};
/* Macros to generate index values for subtractive resources */
/* Macros to generate index values for resources */
#define IOINDEX_SUBTRACTIVE(IDX,LINK) (0x10000000 + ((IDX) << 8) + LINK)
#define IOINDEX_SUBTRACTIVE_LINK(IDX) (IDX & 0xff)
#define IOINDEX(IDX,LINK) (((LINK) << 16) + IDX)
#define IOINDEX_LINK(IDX) (( IDX & 0xf0000) >> 16)
#define IOINDEX_IDX(IDX) (IDX & 0xffff)
/* Generic resource helper functions */
struct device;
struct bus;
@@ -101,4 +106,4 @@ extern void search_global_resources(
#define RESOURCE_TYPE_MAX 20
extern const char *resource_type(struct resource *resource);
#endif /* RESOURCE_H */
#endif /* DEVICE_RESOURCE_H */