X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=lib%2Flibfdt%2Ffdt_ro.c;h=693de9aa5ad8032375b22749a25bc236dc15d950;hb=e731af4893f7741c66254161ad9b6f5280369895;hp=b6ca4e0b0c308fb9f5ebb9dfe5639aaa90769f8c;hpb=809e0e398a91db7bf8b4d6259d9bfc6fbd6bce83;p=oweals%2Fu-boot.git

diff --git a/lib/libfdt/fdt_ro.c b/lib/libfdt/fdt_ro.c
index b6ca4e0b0c..693de9aa5a 100644
--- a/lib/libfdt/fdt_ro.c
+++ b/lib/libfdt/fdt_ro.c
@@ -73,6 +73,37 @@ uint32_t fdt_get_max_phandle(const void *fdt)
 	return 0;
 }
 
+int fdt_generate_phandle(const void *fdt, uint32_t *phandle)
+{
+	uint32_t max = 0;
+	int offset = -1;
+
+	while (true) {
+		uint32_t value;
+
+		offset = fdt_next_node(fdt, offset, NULL);
+		if (offset < 0) {
+			if (offset == -FDT_ERR_NOTFOUND)
+				break;
+
+			return offset;
+		}
+
+		value = fdt_get_phandle(fdt, offset);
+
+		if (value > max)
+			max = value;
+	}
+
+	if (max == FDT_MAX_PHANDLE)
+		return -FDT_ERR_NOPHANDLES;
+
+	if (phandle)
+		*phandle = max + 1;
+
+	return 0;
+}
+
 int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size)
 {
 	FDT_CHECK_HEADER(fdt);