tree c4d2f6e83d2452c6536760a1ee95b326b795147d
parent f885b849681ce0f15c2df313f38ae06a601be506
author Ian Campbell <ian.campbell@citrix.com> 1412342941 +0100
committer Tom Rini <trini@ti.com> 1412948661 -0400

pxe: Ensure we don't overflow bootargs

On a couple of platforms I've tripped over long PXE append lines overflowing
this array, due to having CONFIG_SYS_CBSIZE == 256. When doing preseeded Debian
installs it's pretty trivial to exceed that.

Since the symptom can be a silent hang or a crash add a check. Of course the
affected boards would also need an increased CBSIZE to actually work.

Note that due to the printing of the final bootargs string CONFIG_SYS_PBSIZE
also needs to be sufficiently large.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
[trini: Use %zd not %d in printf for all args]
Signed-off-by: Tom Rini <trini@ti.com>