From: Bin Meng bin.meng@windriver.com
The FDT blob might not have sufficient space to hold a copy of reserved memory node. Expand it before the copy.
Reported-by: Rick Chen rick@andestech.com Signed-off-by: Bin Meng bin.meng@windriver.com ---
Changes in v3: - Extend the FDT size by 1024 bytes
arch/riscv/lib/fdt_fixup.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/arch/riscv/lib/fdt_fixup.c b/arch/riscv/lib/fdt_fixup.c index 5f523f0..160ccca 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);