mb/google/kahlee: Add getter function for GPIO array

Instead of getting the address of the GPIO function with an extern,
add a getter function and make the GPIO arrays static.

TEST=Build Grunt; Build & boot Kahlee
BUG=b:69164070

Change-Id: I3defcb66696459b915d7d4f43234d5c08ab7d417
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/22435
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marc Jones <marc@marcjonesconsulting.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/mainboard/google/kahlee/BiosCallOuts.c

@@ -18,17 +18,16 @@
 #include <FchPlatform.h>
 #include <soc/southbridge.h>
 #include <stdlib.h>
-
-extern const GPIO_CONTROL agesa_board_gpios[];
+#include <baseboard/variants.h>
 
 void platform_FchParams_reset(FCH_RESET_DATA_BLOCK *FchParams_reset)
 {
-	FchParams_reset->EarlyOemGpioTable = (void *)agesa_board_gpios;
+	FchParams_reset->EarlyOemGpioTable = (void *)get_gpio_table();
 }
 
 void platform_FchParams_env(FCH_DATA_BLOCK *FchParams_env)
 {
-	FchParams_env->PostOemGpioTable = (void *)agesa_board_gpios;
+	FchParams_env->PostOemGpioTable = (void *)get_gpio_table();
 
 	/* SDHCI/MMC configuration */
 	if (IS_ENABLED(CONFIG_BOARD_GOOGLE_KAHLEE))

src/mainboard/google/kahlee/variants/baseboard/gpio.c

@@ -20,10 +20,15 @@
 #include <soc/southbridge.h>
 #include <stdlib.h>
 
-const GPIO_CONTROL __attribute__((weak)) agesa_board_gpios[] = {
+static const GPIO_CONTROL agesa_board_gpios[] = {
 
 };
 
+const __attribute__((weak)) GPIO_CONTROL *get_gpio_table(void)
+{
+	return agesa_board_gpios;
+}
+
 /*
  * GPE setup table must match ACPI GPE ASL
  *  { gevent, gpe, direction, level }

src/mainboard/google/kahlee/variants/baseboard/include/baseboard/variants.h

@@ -19,7 +19,9 @@
 
 #include <stddef.h>
 #include <soc/smi.h>
+#include <AGESA.h>
 
+const GPIO_CONTROL *get_gpio_table(void);
 const struct sci_source *get_gpe_table(size_t *num);
 size_t variant_board_id(void);
 

src/mainboard/google/kahlee/variants/kahlee/gpio.c

@@ -21,7 +21,7 @@
 #include <stdlib.h>
 #include <variant/gpio.h>
 
-const GPIO_CONTROL agesa_board_gpios[] = {
+static const GPIO_CONTROL agesa_board_gpios[] = {
 	/* AGPIO2 PCIE/WLAN WAKE# SCI*/
 	{2, Function1, FCH_GPIO_PULL_UP_ENABLE },
 
@@ -100,6 +100,11 @@ const GPIO_CONTROL agesa_board_gpios[] = {
 	{-1}
 };
 
+const GPIO_CONTROL *get_gpio_table(void)
+{
+	return agesa_board_gpios;
+}
+
 /*
  * GPE setup table must match ACPI GPE ASL
  *  { gevent, gpe, direction, level }