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authorBhanu Prakash Maiya <bhanumaiya@google.com>2020-08-12 13:04:27 -0700
committerAaron Durbin <adurbin@chromium.org>2020-08-13 22:59:28 +0000
commita8e24f648ff1c7e7103c06f5a2c0ec048ae7d9f5 (patch)
tree1a00e5c8524dca3f1e6eba76cd2a4d96fc52e61a
parentf852137c810044491eb216d70a18ae0fcb298a8b (diff)
mb/google/zork: Add helper function to read DB ID bits in FW_CONFIG
Add helper function variant_get_daughterboard_id() to read daughterboard id bits (0-3) in firmware configuration table in CBI. BRANCH=none BUG=b:162344105,b:152817444 TEST=Check if daughterboard id bits (0-3) can be read from FW_CONFIG. Signed-off-by: Bhanu Prakash Maiya <bhanumaiya@google.com> Change-Id: Ia3c882439bfbe6da28be2df0ec0c976d5c142677 Reviewed-on: https://review.coreboot.org/c/coreboot/+/44424 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-rw-r--r--src/mainboard/google/zork/variants/baseboard/helpers.c5
-rw-r--r--src/mainboard/google/zork/variants/baseboard/include/baseboard/variants.h2
2 files changed, 7 insertions, 0 deletions
diff --git a/src/mainboard/google/zork/variants/baseboard/helpers.c b/src/mainboard/google/zork/variants/baseboard/helpers.c
index 3f2b0688c7..d95ab823f6 100644
--- a/src/mainboard/google/zork/variants/baseboard/helpers.c
+++ b/src/mainboard/google/zork/variants/baseboard/helpers.c
@@ -144,3 +144,8 @@ bool variant_has_active_low_wifi_power(void)
return true;
}
+
+int variant_get_daughterboard_id(void)
+{
+ return extract_field(FW_CONFIG_MASK_DB_INDEX, FW_CONFIG_DB_INDEX_SHIFT);
+}
diff --git a/src/mainboard/google/zork/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/zork/variants/baseboard/include/baseboard/variants.h
index 98ba56530a..bedcb0dd08 100644
--- a/src/mainboard/google/zork/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/zork/variants/baseboard/include/baseboard/variants.h
@@ -72,5 +72,7 @@ bool variant_uses_v3_6_schematics(void);
bool variant_uses_codec_gpi(void);
/* Return true if variant has active low power enable fow WiFi. */
bool variant_has_active_low_wifi_power(void);
+/* Return value of daughterboard ID */
+int variant_get_daughterboard_id(void);
#endif /* __BASEBOARD_VARIANTS_H__ */