From 3234aa4babd79bf92239409145db4fda2f505051 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 23 Jul 2014 06:55:16 -0600 Subject: fdt: Add a function to get the node offset of an alias This simple function returns the node offset of a named alias. Signed-off-by: Simon Glass --- lib/fdtdec.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'lib/fdtdec.c') diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 1b4ae9f..eb5aa20 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -365,6 +365,21 @@ int fdtdec_get_alias_seq(const void *blob, const char *base, int offset, return -ENOENT; } +int fdtdec_get_alias_node(const void *blob, const char *name) +{ + const char *prop; + int alias_node; + int len; + + if (!blob) + return -FDT_ERR_NOTFOUND; + alias_node = fdt_path_offset(blob, "/aliases"); + prop = fdt_getprop(blob, alias_node, name, &len); + if (!prop) + return -FDT_ERR_NOTFOUND; + return fdt_path_offset(blob, prop); +} + int fdtdec_check_fdt(void) { /* -- cgit v1.1