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 --- lib/fdtdec.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'lib') diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 9714620ab3..4aa227a0c3 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -485,6 +485,26 @@ int fdtdec_get_int_array(const void *blob, int node, const char *prop_name, return err; } +int fdtdec_get_int_array_count(const void *blob, int node, + const char *prop_name, u32 *array, int count) +{ + const u32 *cell; + int len, elems; + int i; + + debug("%s: %s\n", __func__, prop_name); + cell = fdt_getprop(blob, node, prop_name, &len); + if (!cell) + return -FDT_ERR_NOTFOUND; + elems = len / sizeof(u32); + if (count > elems) + count = elems; + for (i = 0; i < count; i++) + array[i] = fdt32_to_cpu(cell[i]); + + return count; +} + const u32 *fdtdec_locate_array(const void *blob, int node, const char *prop_name, int count) { -- cgit v1.2.1