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authorSimon Glass <sjg@chromium.org>2014-11-10 18:00:19 -0700
committerSimon Glass <sjg@chromium.org>2014-11-21 07:24:11 +0100
commita9f04d49e519383f98689d603facdee227a2f94d (patch)
tree1b218e35a8b8c0789a119edcdb06c87ba78e62e5 /lib
parent768e0f52f2d1a9d19842c8d1ded22a96b080a266 (diff)
downloadblackbird-obmc-uboot-a9f04d49e519383f98689d603facdee227a2f94d.tar.gz
blackbird-obmc-uboot-a9f04d49e519383f98689d603facdee227a2f94d.zip
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 <sjg@chromium.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/fdtdec.c20
1 files changed, 20 insertions, 0 deletions
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)
{
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