From a9f04d49e519383f98689d603facdee227a2f94d Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 10 Nov 2014 18:00:19 -0700 Subject: fdt: Add a function to decode a variable-sized u32 array Sometimes an array can be of variable size up to a maximum. Add a helper function to decode this. Signed-off-by: Simon Glass --- include/fdtdec.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include') diff --git a/include/fdtdec.h b/include/fdtdec.h index 4ae77be9ba..6b4000623d 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -444,6 +444,22 @@ int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name); int fdtdec_get_int_array(const void *blob, int node, const char *prop_name, u32 *array, int count); +/** + * Look up a property in a node and return its contents in an integer + * array of given length. The property must exist but may have less data that + * expected (4*count bytes). It may have more, but this will be ignored. + * + * @param blob FDT blob + * @param node node to examine + * @param prop_name name of property to find + * @param array array to fill with data + * @param count number of array elements + * @return number of array elements if ok, or -FDT_ERR_NOTFOUND if the + * property is not found + */ +int fdtdec_get_int_array_count(const void *blob, int node, + const char *prop_name, u32 *array, int count); + /** * Look up a property in a node and return a pointer to its contents as a * unsigned int array of given length. The property must have at least enough -- cgit v1.2.1