fdt/wrappers: Introduce code to find UART DT node
The stdout-path property in the /chosen node of a DTB points to a device
node, which is used for boot console output.
On most (if not all) ARM based platforms this is the debug UART.
The ST platform code contains a function to parse this property and
chase down eventual aliases to learn the node offset of this UART node.
Introduce a slightly more generalised version of this ST platform function
in the generic fdt_wrappers code. This will be useful for other platforms
as well.
Change-Id: Ie6da47ace7833861b5e35fe8cba49835db3659a5
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/include/common/fdt_wrappers.h b/include/common/fdt_wrappers.h
index 06625e4..382651e 100644
--- a/include/common/fdt_wrappers.h
+++ b/include/common/fdt_wrappers.h
@@ -32,5 +32,6 @@
uintptr_t *base, size_t *size);
int fdt_get_reg_props_by_name(const void *dtb, int node, const char *name,
uintptr_t *base, size_t *size);
+int fdt_get_stdout_node_offset(const void *dtb);
#endif /* FDT_WRAPPERS_H */