diff options
| author | Nathan Whitehorn <nwhitehorn@freebsd.org> | 2018-01-25 05:13:40 +0000 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-07-19 07:01:11 +0200 |
| commit | c13e400a31fceb64bd985ac48ef9c52b7502318b (patch) | |
| tree | ea164d0991154f922a58b457a27c16b1f28d82a8 /cpukit/dtc/libfdt/fdt.c | |
| parent | implement strnlen for systems that need it (diff) | |
| download | rtems-c13e400a31fceb64bd985ac48ef9c52b7502318b.tar.bz2 | |
Add limited read-only support for older (V2 and V3) device tree to libfdt.
This can be useful in particular in the kernel when booting on systems
with FDT-emitting firmware that is out of date. Releases of kexec-tools
on ppc64 prior to the end of 2014 are notable examples of such.
Signed-off-by: Nathan Whitehorn <nwhitehorn@freebsd.org>
[dwg: Some whitespace cleanups]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'cpukit/dtc/libfdt/fdt.c')
| -rw-r--r-- | cpukit/dtc/libfdt/fdt.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/cpukit/dtc/libfdt/fdt.c b/cpukit/dtc/libfdt/fdt.c index fd13236736..7855a17877 100644 --- a/cpukit/dtc/libfdt/fdt.c +++ b/cpukit/dtc/libfdt/fdt.c @@ -123,6 +123,9 @@ uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset) /* skip-name offset, length and value */ offset += sizeof(struct fdt_property) - FDT_TAGSIZE + fdt32_to_cpu(*lenp); + if (fdt_version(fdt) < 0x10 && fdt32_to_cpu(*lenp) >= 8 && + ((offset - fdt32_to_cpu(*lenp)) % 8) != 0) + offset += 4; break; case FDT_END: |