nyan: Use asm volatile instead of plain asm so it doesn't get optimized out

Hardware / Coreboot - Gabe Black [google.com] - 11 November 2014 19:25 UTC

If an asm blob isn't marked as volatile, gcc is free to throw it out if it doesn't think it produces any values that are actually used. To prevent that from happening, add volatile to some asm blobs in the nyan romstage code.

BUG=None TEST=Booted on nyan rev1. BRANCH=None

Original-Change-Id: I819e068e738e94ea749fcb72bba2eee080e1dfb1

f220df6 nyan: Use asm volatile instead of plain asm so it doesn't get optimized out.
src/mainboard/google/nyan/romstage.c | 3 ++-
src/mainboard/google/nyan_big/romstage.c | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)

Upstream: review.coreboot.org

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