mainboard/google/kahlee: Update memory.c

This fixes some issues with the initial implementation that was copied
from reef.
- The board ID value shouldn't be size_t - it's not a size.
- Kahlee doesn't even need the memory.c file - it uses an SoDIMM.

BUG=b:68293392
TEST=build stoney platforms, boot kahleebo

Change-Id: Ife5660d36912e887edfd0365a9f16c5a172c9c86
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/22515
Reviewed-by: Marc Jones <marc@marcjonesconsulting.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

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

@@ -23,6 +23,6 @@
 
 const GPIO_CONTROL *get_gpio_table(void);
 const struct sci_source *get_gpe_table(size_t *num);
-size_t variant_board_id(void);
+uint8_t variant_board_id(void);
 
 #endif /* __BASEBOARD_VARIANTS_H__ */

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

@@ -17,7 +17,7 @@
 #include <baseboard/variants.h>
 #include <variant/gpio.h>
 
-size_t __attribute__((weak)) variant_board_id(void)
+uint8_t __attribute__((weak)) variant_board_id(void)
 {
 	gpio_t pads[] = {
 		[3] = MEM_CONFIG3,
@@ -26,5 +26,5 @@ size_t __attribute__((weak)) variant_board_id(void)
 		[0] = MEM_CONFIG0,
 	};
 
-	return gpio_pullup_base2_value(pads, ARRAY_SIZE(pads));
+	return gpio_base2_value(pads, ARRAY_SIZE(pads));
 }

src/mainboard/google/kahlee/variants/kahlee/Makefile.inc

@@ -16,7 +16,5 @@
 bootblock-y += gpio.c
 
 romstage-y += gpio.c
-romstage-y += memory.c
 
 ramstage-y += gpio.c
-ramstage-y += memory.c

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

@@ -1,29 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright 2017 Google Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <gpio.h> /* src/include/gpio.h */
-#include <baseboard/variants.h>
-#include <baseboard/gpio.h>
-
-size_t variant_board_id(void)
-{
-	gpio_t pads[] = {
-		[2] = MEM_CONFIG2,
-		[1] = MEM_CONFIG1,
-		[0] = MEM_CONFIG0,
-	};
-
-	return gpio_pullup_base2_value(pads, ARRAY_SIZE(pads));
-}