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resources: introduce IORESOURCE_WRCOMB 

Certain MMIO resources can be set to a write-combining cacheable
mode to increase performance. Typical resources that use this would
be graphics memory.

Change-Id: Icd96c720f86f7e2f19a6461bb23cb323124eb68e
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2891
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
Aaron Durbin 2013-03-22 22:16:58 -05:00 committed by Stefan Reinauer
parent a75561415e
commit 4fa5fa5088
1 changed files with 1 additions and 1 deletions
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2
src/include/device/resource.h
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@ -21,7 +21,7 @@
* to the bus below.
*/
#define IORESOURCE_BRIDGE 0x00080000 /* The IO resource has a bus below it. */
#define IORESOURCE_WRCOMB 0x00100000 /* Write combining resource. */
#define IORESOURCE_RESERVE 0x10000000 /* The resource needs to be reserved in the coreboot table */
#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 */