diff options
| author | Bin Meng | 2020-06-25 18:16:07 -0700 |
|---|---|---|
| committer | Andes | 2020-07-02 10:03:09 +0800 |
| commit | a8492e25ac717b521e9cca2044282d3ac7025acb (patch) | |
| tree | b17f8c533e2781c822b79878271705deeaf79549 /arch/riscv | |
| parent | c4f7c506d9e0be6465f70636ee9ba62df9d6f132 (diff) | |
riscv: Expand the DT size before copy reserved memory node
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>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Rick Chen <rick@andestech.com>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/lib/fdt_fixup.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/riscv/lib/fdt_fixup.c b/arch/riscv/lib/fdt_fixup.c index 5f523f0e07d..160ccca76e0 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); |