Makefile: ensure DTB doesn't overflow into initial stack
authorStephen Warren <swarren@nvidia.com>
Tue, 9 Jan 2018 19:52:14 +0000 (12:52 -0700)
committerTom Warren <twarren@nvidia.com>
Fri, 12 Jan 2018 17:12:32 +0000 (10:12 -0700)
commit5fed97af20da955625cc06563a725b49cebb99eb
tree3743fad9eb406ab0f2a4cc4d1ee2526fa1a74501
parente43effc1d8cb82ed376649ad7d70e9ac0209c18b
Makefile: ensure DTB doesn't overflow into initial stack

With CONFIG_SYS_INIT_SP_BSS_OFFSET enabled, the initial (pre-relocation)
stack is placed some distance after bss_start. The control DTB is appended
to the U-Boot binary at bss_start. If the DTB is too large, or the SP BSS
offset too small, then the initial stack could corrupt the DTB. Enhance
the Makefile to check whether this is likely to occur.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Makefile