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-rw-r--r--scripts/dtc/libfdt/fdt_rw.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/scripts/dtc/libfdt/fdt_rw.c b/scripts/dtc/libfdt/fdt_rw.c
index 8e7ec4cb7bcd..24437dfc32b8 100644
--- a/scripts/dtc/libfdt/fdt_rw.c
+++ b/scripts/dtc/libfdt/fdt_rw.c
@@ -289,6 +289,33 @@ int fdt_setprop(void *fdt, int nodeoffset, const char *name,
return 0;
}
+int fdt_appendprop(void *fdt, int nodeoffset, const char *name,
+ const void *val, int len)
+{
+ struct fdt_property *prop;
+ int err, oldlen, newlen;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
+ if (prop) {
+ newlen = len + oldlen;
+ err = _fdt_splice_struct(fdt, prop->data,
+ FDT_TAGALIGN(oldlen),
+ FDT_TAGALIGN(newlen));
+ if (err)
+ return err;
+ prop->len = cpu_to_fdt32(newlen);
+ memcpy(prop->data + oldlen, val, len);
+ } else {
+ err = _fdt_add_property(fdt, nodeoffset, name, len, &prop);
+ if (err)
+ return err;
+ memcpy(prop->data, val, len);
+ }
+ return 0;
+}
+
int fdt_delprop(void *fdt, int nodeoffset, const char *name)
{
struct fdt_property *prop;
@@ -406,6 +433,8 @@ int fdt_open_into(const void *fdt, void *buf, int bufsize)
struct_size = 0;
while (fdt_next_tag(fdt, struct_size, &struct_size) != FDT_END)
;
+ if (struct_size < 0)
+ return struct_size;
}
if (!_fdt_blocks_misordered(fdt, mem_rsv_size, struct_size)) {