regions: add memory region device support

Provide common code for using memory-backed region devices.
This allows in-memory buffers to act as a region device.

Change-Id: I266cd07bbfa16a427c2b31c512e7c87b77f47718
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9131
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Aaron Durbin
2015-03-27 01:03:45 -05:00
parent 127525c772
commit b419c1a87c
2 changed files with 61 additions and 0 deletions

View File

@ -97,4 +97,23 @@ static inline size_t region_sz(const struct region *r)
return r->size;
}
struct mem_region_device {
char *base;
struct region_device rdev;
};
/* Iniitalize at runtime a mem_region_device. This would be used when
* the base and size are dynamic or can't be known during linking. */
void mem_region_device_init(struct mem_region_device *mdev, void *base,
size_t size);
extern const struct region_device_ops mem_rdev_ops;
/* Statically initialize mem_region_device. */
#define MEM_REGION_DEV_INIT(base_, size_) \
{ \
.base = (void *)(base_), \
.rdev = REGION_DEV_INIT(&mem_rdev_ops, 0, (size_)), \
}
#endif /* _REGION_H_ */