
25 Jun
2020
25 Jun
'20
8:49 p.m.
On Thu, Jun 25, 2020 at 12:39 AM Bin Meng bmeng.cn@gmail.com wrote:
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);
-- 2.7.4
Reviewed-by: Atish Patra atish.patra@wdc.com
--
Regards,
Atish