diff options
Diffstat (limited to 'tools/build/options/WITH_BEARSSL')
| -rw-r--r-- | tools/build/options/WITH_BEARSSL | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/tools/build/options/WITH_BEARSSL b/tools/build/options/WITH_BEARSSL index f576ea25dce4..ff443a20586a 100644 --- a/tools/build/options/WITH_BEARSSL +++ b/tools/build/options/WITH_BEARSSL @@ -1,4 +1,3 @@ -.\" $FreeBSD$ Build the BearSSL library. .Pp BearSSL is a tiny SSL library suitable for embedded environments. @@ -9,3 +8,22 @@ This library is currently only used to perform signature verification and related operations for Verified Exec and .Xr loader 8 . +.Pp +Due to size constraints in the BIOS environment on x86, one may need to set +.Va LOADERSIZE +larger than the +default 500000, although often loader is under the 500k limit even with +this option. +Setting +.Va LOADERSIZE +larger than 500000 may cause +.Xr pxeboot 8 +to be too large to work. +Careful testing of the loader in the target environment when built with a larger +limit to establish safe limits is critical because different BIOS environments +reserve differing amounts of the low 640k space, making a precise limit for +everybody impossible. +.Pp +See also +.Va WITH_LOADER_PXEBOOT +for other considerations. |