From: Rick Chen <r...@andestech.com>
The L2 cache will be enabled in init flow of dm cache
driver when it detect L2 node in dtb.
When U-Boot jumps to Linux Kernel, the disable ops will
be called to flush and disable the L2 cache via the dm
cache driver.
Signed-off-by: Rick Chen <r...@andestech.com>
Cc: KC Lin <kc...@andestech.com>
---
drivers/cache/cache-uclass.c | 20 ++++++++++++++++++++
include/cache.h | 31 +++++++++++++++++++++++++++++++
2 files changed, 51 insertions(+)
diff --git a/drivers/cache/cache-uclass.c b/drivers/cache/cache-uclass.c
index 97ce024..3b20a10 100644
--- a/drivers/cache/cache-uclass.c
+++ b/drivers/cache/cache-uclass.c
@@ -17,6 +17,26 @@ int cache_get_info(struct udevice *dev, struct cache_info
*info)
return ops->get_info(dev, info);
}
+int cache_enable(struct udevice *dev)
+{
+ struct cache_ops *ops = cache_get_ops(dev);
+
+ if (!ops->enable)
+ return -ENOSYS;
+
+ return ops->enable(dev);
+}
+
+int cache_disable(struct udevice *dev)
+{
+ struct cache_ops *ops = cache_get_ops(dev);
+
+ if (!ops->disable)
+ return -ENOSYS;
+
+ return ops->disable(dev);
+}
+
UCLASS_DRIVER(cache) = {
.id = UCLASS_CACHE,
.name = "cache",
diff --git a/include/cache.h b/include/cache.h
index c6334ca..32f59fd 100644
--- a/include/cache.h
+++ b/include/cache.h
@@ -22,6 +22,22 @@ struct cache_ops {
* @return 0 if OK, -ve on error
*/
int (*get_info)(struct udevice *dev, struct cache_info *info);
+
+ /**
+ * enable() - Enable cache
+ *
+ * @dev: Device to check (UCLASS_CACHE)
+ * @return 0 if OK, -ve on error
+ */
+ int (*enable)(struct udevice *dev);
+
+ /**
+ * disable() - Flush and disable cache
+ *
+ * @dev: Device to check (UCLASS_CACHE)
+ * @return 0 if OK, -ve on error
+ */
+ int (*disable)(struct udevice *dev);
};
#define cache_get_ops(dev) ((struct cache_ops *)(dev)->driver->ops)
@@ -35,4 +51,19 @@ struct cache_ops {
*/
int cache_get_info(struct udevice *dev, struct cache_info *info);
+/**
+ * cache_enable() - Enable cache
+ *
+ * @dev: Device to check (UCLASS_CACHE)
+ * @return 0 if OK, -ve on error
+ */
+int cache_enable(struct udevice *dev);
+
+/**
+ * cache_disable() - Flush and disable cache
+ *
+ * @dev: Device to check (UCLASS_CACHE)
+ * @return 0 if OK, -ve on error
+ */
+int cache_disable(struct udevice *dev);
#endif
--
2.7.4
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
