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-rw-r--r--arch/riscv/lib/fdt_fixup.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/riscv/lib/fdt_fixup.c b/arch/riscv/lib/fdt_fixup.c
index 5f523f0e07..160ccca76e 100644
--- a/arch/riscv/lib/fdt_fixup.c
+++ b/arch/riscv/lib/fdt_fixup.c
@@ -41,6 +41,18 @@ int riscv_fdt_copy_resv_mem_node(const void *src, void *dst)
return 0;
}
+ /*
+ * Extend the FDT by the following estimated size:
+ *
+ * Each PMP memory region entry occupies 64 bytes.
+ * With 16 PMP memory regions we need 64 * 16 = 1024 bytes.
+ */
+ err = fdt_open_into(dst, dst, fdt_totalsize(dst) + 1024);
+ if (err < 0) {
+ printf("Device Tree can't be expanded to accommodate new node");
+ return err;
+ }
+
fdt_for_each_subnode(node, src, offset) {
name = fdt_get_name(src, node, NULL);