ec/google: Isolate EC bus protocol implementation.
The Chrome EC can be connected by different types of bus like LPC / I2C / SPI,
and the current implementation is only for LPC.
To support other types, we must first isolate the LPC protocol stuff and add
configuration variable (EC_GOOGLE_CHROMEEC_LPC) to specify bus type.
Verified by building google/link (with chromeec) configuration successfully.
Change-Id: Ib2920d8d935bcc77a5394e818f69e9265e26e8a0
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/3068
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
diff --git a/src/ec/google/chromeec/Makefile.inc b/src/ec/google/chromeec/Makefile.inc
index 93ad333b..5fb258f 100644
--- a/src/ec/google/chromeec/Makefile.inc
+++ b/src/ec/google/chromeec/Makefile.inc
@@ -1,5 +1,8 @@
ramstage-y += ec.c
+ramstage-$(CONFIG_EC_GOOGLE_CHROMEEC_LPC) += ec_lpc.c
smm-y += ec.c
+smm-$(CONFIG_EC_GOOGLE_CHROMEEC_LPC) += ec_lpc.c
romstage-y += ec.c
+romstage-$(CONFIG_EC_GOOGLE_CHROMEEC_LPC) += ec_lpc.c
CFLAGS += -I $(call strip_quotes,$(CONFIG_EC_GOOGLE_API_ROOT))