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authorFurquan Shaikh <furquan@google.com>2016-06-19 23:16:45 -0700
committerFurquan Shaikh <furquan@google.com>2016-06-21 20:23:40 +0200
commit2b57691ce0dcb06d6d8677393f76006c363d5856 (patch)
tree95c01e16e04fabdf09c624c8852fd525112888cd
parentf4dac8ac06512c8ed00a58cacae453c128a159de (diff)
downloadcoreboot-2b57691ce0dcb06d6d8677393f76006c363d5856.tar.xz
commonlib/region: Add helpers for dynamic initialization of region dev
This allows initialization of runtime region devices and xlate region devices where all parameters cannot be statically determined. BUG=chrome-os-partner:54563 Change-Id: Ia6e1b695fed3bbfa08598d1593e650fc1465d41f Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/15267 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
-rw-r--r--src/commonlib/include/commonlib/region.h11
-rw-r--r--src/commonlib/region.c23
2 files changed, 34 insertions, 0 deletions
diff --git a/src/commonlib/include/commonlib/region.h b/src/commonlib/include/commonlib/region.h
index 4e32b09be0..634132a695 100644
--- a/src/commonlib/include/commonlib/region.h
+++ b/src/commonlib/include/commonlib/region.h
@@ -90,6 +90,11 @@ struct region_device {
}, \
}
+/* Helper to dynamically initialize region device. */
+void region_device_init(struct region_device *rdev,
+ const struct region_device_ops *ops, size_t offset,
+ size_t size);
+
static inline size_t region_offset(const struct region *r)
{
return r->offset;
@@ -187,4 +192,10 @@ extern const struct region_device_ops xlate_rdev_ops;
.rdev = REGION_DEV_INIT(&xlate_rdev_ops, 0, (parent_sz_)),\
}
+/* Helper to dynamically initialize xlate region device. */
+void xlate_region_device_init(struct xlate_region_device *xdev,
+ const struct region_device *access_dev,
+ size_t sub_offset, size_t sub_size,
+ size_t parent_size);
+
#endif /* _REGION_H_ */
diff --git a/src/commonlib/region.c b/src/commonlib/region.c
index bfc5fc8471..6f710746ca 100644
--- a/src/commonlib/region.c
+++ b/src/commonlib/region.c
@@ -133,6 +133,29 @@ void mem_region_device_init(struct mem_region_device *mdev, void *base,
mdev->rdev.region.size = size;
}
+void region_device_init(struct region_device *rdev,
+ const struct region_device_ops *ops, size_t offset,
+ size_t size)
+{
+ memset(rdev, 0, sizeof(*rdev));
+ rdev->root = NULL;
+ rdev->ops = ops;
+ rdev->region.offset = offset;
+ rdev->region.size = size;
+}
+
+void xlate_region_device_init(struct xlate_region_device *xdev,
+ const struct region_device *access_dev,
+ size_t sub_offset, size_t sub_size,
+ size_t parent_size)
+{
+ memset(xdev, 0, sizeof(*xdev));
+ xdev->access_dev = access_dev;
+ xdev->sub_region.offset = sub_offset;
+ xdev->sub_region.size = sub_size;
+ region_device_init(&xdev->rdev, &xlate_rdev_ops, 0, parent_size);
+}
+
static void *mdev_mmap(const struct region_device *rd, size_t offset,
size_t size __unused)
{