fdtdec: Support retrieving the name of a carveout
When retrieving a given carveout for a device, allow callers to query
the name. This helps differentiating between carveouts when there are
more than one.
This is also useful when copying carveouts to help assign a meaningful
name that cannot always be guessed.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index f2861eb..3ada77d 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -1406,8 +1406,9 @@
return 0;
}
-int fdtdec_get_carveout(const void *blob, const char *node, const char *name,
- unsigned int index, struct fdt_memory *carveout)
+int fdtdec_get_carveout(const void *blob, const char *node,
+ const char *prop_name, unsigned int index,
+ struct fdt_memory *carveout, const char **name)
{
const fdt32_t *prop;
uint32_t phandle;
@@ -1418,9 +1419,9 @@
if (offset < 0)
return offset;
- prop = fdt_getprop(blob, offset, name, &len);
+ prop = fdt_getprop(blob, offset, prop_name, &len);
if (!prop) {
- debug("failed to get %s for %s\n", name, node);
+ debug("failed to get %s for %s\n", prop_name, node);
return -FDT_ERR_NOTFOUND;
}
@@ -1442,6 +1443,9 @@
return offset;
}
+ if (name)
+ *name = fdt_get_name(blob, offset, NULL);
+
carveout->start = fdtdec_get_addr_size_auto_noparent(blob, offset,
"reg", 0, &size,
true);