diff options
| author | Simon Glass <sjg@chromium.org> | 2020-02-20 14:45:53 -0700 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2020-03-02 07:52:21 +0100 |
| commit | 52d4c65008936f844a9c26363698ba21bae8fe61 (patch) | |
| tree | 7da0f2c51b8e21e97204a3dac645021914e39c4b /cpukit/dtc/libfdt/fdt.c | |
| parent | libfdt: Add support for disabling dtb checks (diff) | |
| download | rtems-52d4c65008936f844a9c26363698ba21bae8fe61.tar.bz2 | |
libfdt: Add support for disabling sanity checks
Allow enabling ASSUME_VALID_INPUT to disable sanity checks on the device
tree and the parameters to libfdt. This assumption covers that cases where
the problem could be with either.
Signed-off-by: Simon Glass <sjg@chromium.org>
Message-Id: <20200220214557.176528-5-sjg@chromium.org>
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 | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/cpukit/dtc/libfdt/fdt.c b/cpukit/dtc/libfdt/fdt.c index d4daf6096c..0dabb920ad 100644 --- a/cpukit/dtc/libfdt/fdt.c +++ b/cpukit/dtc/libfdt/fdt.c @@ -129,10 +129,11 @@ const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int len) { unsigned absoffset = offset + fdt_off_dt_struct(fdt); - if ((absoffset < offset) - || ((absoffset + len) < absoffset) - || (absoffset + len) > fdt_totalsize(fdt)) - return NULL; + if (!can_assume(VALID_INPUT)) + if ((absoffset < offset) + || ((absoffset + len) < absoffset) + || (absoffset + len) > fdt_totalsize(fdt)) + return NULL; if (fdt_version(fdt) >= 0x11) if (((offset + len) < offset) @@ -197,6 +198,8 @@ uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset) int fdt_check_node_offset_(const void *fdt, int offset) { + if (can_assume(VALID_INPUT)) + return offset; if ((offset < 0) || (offset % FDT_TAGSIZE) || (fdt_next_tag(fdt, offset, &offset) != FDT_BEGIN_NODE)) return -FDT_ERR_BADOFFSET; |