libpayload: Change "GPIOs" into flags.

Some constants which were used to interpret the contents of the coreboot
tables were moved to the appropriate libpayload header file. The constant which
describes the maximum length of a GPIO name was renamed to have a CB_ prefix.
That makes it more obvious what sort of GPIO name it describes, and reduces the
change of a name collision. It also makes it more consistent with other names
in that header, although some other exceptions still exist.

Change-Id: I6c0082b3198d34e8a78507fbfac343ee8facf0dc
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1728
Tested-by: build bot (Jenkins)
Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/payloads/libpayload/include/coreboot_tables.h b/payloads/libpayload/include/coreboot_tables.h
index 9251826648..14f94cf28b 100644
--- a/payloads/libpayload/include/coreboot_tables.h
+++ b/payloads/libpayload/include/coreboot_tables.h
@@ -166,12 +166,14 @@ struct cb_framebuffer {
 };
 
 #define CB_TAG_GPIO 0x0013
-#define GPIO_MAX_NAME_LENGTH 16
+#define CB_GPIO_ACTIVE_LOW 0
+#define CB_GPIO_ACTIVE_HIGH 1
+#define CB_GPIO_MAX_NAME_LENGTH 16
 struct cb_gpio {
 	u32 port;
 	u32 polarity;
 	u32 value;
-	u8 name[GPIO_MAX_NAME_LENGTH];
+	u8 name[CB_GPIO_MAX_NAME_LENGTH];
 };
 
 struct cb_gpios {