fsp_baytrail: Add code to read GPIOs in romstage

Hardware / Coreboot - Martin Roth [se-eng.com] - 17 December 2014 10:04 UTC

- Build gpio.c into romstage- Add functions to translate the GPIO # to a pad #, then return the
value read from the GPIO.- Add functions to configure the GPIO - Function, Pull up/down, pull strength, Input/Output, and Output level.

Change-Id: Ic37dfc9a74a598023bdf797d31087428adec176a

52669ef fsp_baytrail: Add code to read GPIOs in romstage
src/soc/intel/fsp_baytrail/Makefile.inc | 1 +
src/soc/intel/fsp_baytrail/baytrail/gpio.h | 4 +
src/soc/intel/fsp_baytrail/gpio.c | 111 +++++++++++++++++++++++++++-
3 files changed, 115 insertions(+), 1 deletion(-)

Upstream: review.coreboot.org

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