dm: util: Add a livetree equivalent API of dm_fdt_pre_reloc()
This adds a new API dm_ofnode_pre_reloc(), a livetree equivalent
API of dm_fdt_pre_reloc().
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/core/util.c b/drivers/core/util.c
index 451d476..27a6848 100644
--- a/drivers/core/util.c
+++ b/drivers/core/util.c
@@ -4,6 +4,7 @@
*/
#include <common.h>
+#include <dm/ofnode.h>
#include <dm/util.h>
#include <linux/libfdt.h>
#include <vsprintf.h>
@@ -53,3 +54,27 @@
return false;
}
+
+bool dm_ofnode_pre_reloc(ofnode node)
+{
+ if (ofnode_read_bool(node, "u-boot,dm-pre-reloc"))
+ return true;
+
+#ifdef CONFIG_TPL_BUILD
+ if (ofnode_read_bool(node, "u-boot,dm-tpl"))
+ return true;
+#elif defined(CONFIG_SPL_BUILD)
+ if (ofnode_read_bool(node, "u-boot,dm-spl"))
+ return true;
+#else
+ /*
+ * In regular builds individual spl and tpl handling both
+ * count as handled pre-relocation for later second init.
+ */
+ if (ofnode_read_bool(node, "u-boot,dm-spl") ||
+ ofnode_read_bool(node, "u-boot,dm-tpl"))
+ return true;
+#endif
+
+ return false;
+}
diff --git a/include/dm/util.h b/include/dm/util.h
index 898822e..9ff6531 100644
--- a/include/dm/util.h
+++ b/include/dm/util.h
@@ -55,7 +55,7 @@
* There are 3 settings currently in use
* -
* - u-boot,dm-pre-reloc: legacy and indicates any of TPL or SPL
- * Existing platforms only use it to indicate nodes needee in
+ * Existing platforms only use it to indicate nodes needed in
* SPL. Should probably be replaced by u-boot,dm-spl for
* existing platforms.
* @blob: devicetree
@@ -65,4 +65,29 @@
*/
bool dm_fdt_pre_reloc(const void *blob, int offset);
+/**
+ * Check if an of node should be or was bound before relocation.
+ *
+ * Devicetree nodes can be marked as needed to be bound
+ * in the loader stages via special devicetree properties.
+ *
+ * Before relocation this function can be used to check if nodes
+ * are required in either SPL or TPL stages.
+ *
+ * After relocation and jumping into the real U-Boot binary
+ * it is possible to determine if a node was bound in one of
+ * SPL/TPL stages.
+ *
+ * There are 3 settings currently in use
+ * -
+ * - u-boot,dm-pre-reloc: legacy and indicates any of TPL or SPL
+ * Existing platforms only use it to indicate nodes needed in
+ * SPL. Should probably be replaced by u-boot,dm-spl for
+ * existing platforms.
+ * @node: of node
+ *
+ * Returns true if node is needed in SPL/TL, false otherwise.
+ */
+bool dm_ofnode_pre_reloc(ofnode node);
+
#endif