arm: Disable ATAGs support

With the exceptions of ds109, ds414, icnova-a20-swac, nokia_rx51 and
stemmy, disable ATAG support.  A large number of platforms had enabled
support but never supported a kernel so old as to require it.  Further,
some platforms are old enough to support both, but are well supported by
devicetree booting, and have been for a number of years.  This is
because some of the ATAGs related functions have been re-used to provide
the same kind of information, but for devicetree or just generally to
inform the user.  When needed still, rename these functions to
get_board_revision() instead, to avoid conflicts.  In other cases, these
functions were simply unused, so drop them.

Cc: Andre Przywara <andre.przywara@arm.com>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Phil Sutter <phil@nwl.cc>
Cc: Stefan Bosch <stefan_b@posteo.net>
Signed-off-by: Tom Rini <trini@konsulko.com>

5 files changed, 18 insertions, 22 deletions

diff --git a/board/samsung/common/exynos5-dt-types.c b/board/samsung/common/exynos5-dt-types.c
index e2d5a7c9ba..554fc91cc1 100644
--- a/board/samsung/common/exynos5-dt-types.c
+++ b/board/samsung/common/exynos5-dt-types.c
@@ -47,18 +47,6 @@ struct odroid_rev_info odroid_info[] = {
 	{ EXYNOS5_BOARD_ODROID_UNKNOWN, 0, 4095, "unknown" },
 };
 
-static unsigned int odroid_get_rev(void)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(odroid_info); i++) {
-		if (odroid_info[i].board_type == gd->board_type)
-			return odroid_info[i].board_rev;
-	}
-
-	return 0;
-}
-
 /*
  * Read ADC at least twice and check the resuls.  If regulator providing voltage
  * on to measured point was just turned on, first reads might require time
@@ -200,6 +188,19 @@ bool board_is_generic(void)
 	return false;
 }
 
+#ifdef CONFIG_REVISION_TAG
+static unsigned int odroid_get_rev(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(odroid_info); i++) {
+		if (odroid_info[i].board_type == gd->board_type)
+			return odroid_info[i].board_rev;
+	}
+
+	return 0;
+}
+
 /**
  * get_board_rev() - return detected board revision.
  *
@@ -212,6 +213,7 @@ u32 get_board_rev(void)
 
 	return odroid_get_rev();
 }
+#endif
 
 /**
  * get_board_type() - returns board type string.
diff --git a/board/samsung/goni/goni.c b/board/samsung/goni/goni.c
index b32b82fc2d..ba25ba27b8 100644
--- a/board/samsung/goni/goni.c
+++ b/board/samsung/goni/goni.c
@@ -24,11 +24,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-u32 get_board_rev(void)
-{
-	return 0;
-}
-
 int board_init(void)
 {
 	/* Set Initial global variables */
diff --git a/board/samsung/origen/origen.c b/board/samsung/origen/origen.c
index e17454ad77..7a91f44896 100644
--- a/board/samsung/origen/origen.c
+++ b/board/samsung/origen/origen.c
@@ -12,11 +12,6 @@
 #include <asm/arch/pinmux.h>
 #include <usb.h>
 
-u32 get_board_rev(void)
-{
-	return 0;
-}
-
 int exynos_init(void)
 {
 	return 0;
diff --git a/board/samsung/trats2/trats2.c b/board/samsung/trats2/trats2.c
index 59e6fbf4b0..a03dc87385 100644
--- a/board/samsung/trats2/trats2.c
+++ b/board/samsung/trats2/trats2.c
@@ -67,10 +67,12 @@ static void check_hw_revision(void)
 	board_rev = modelrev << 8;
 }
 
+#ifdef CONFIG_REVISION_TAG
 u32 get_board_rev(void)
 {
 	return board_rev;
 }
+#endif
 
 static inline u32 get_model_rev(void)
 {
diff --git a/board/samsung/universal_c210/universal.c b/board/samsung/universal_c210/universal.c
index 9ef11b8471..3764b5478b 100644
--- a/board/samsung/universal_c210/universal.c
+++ b/board/samsung/universal_c210/universal.c
@@ -33,10 +33,12 @@ DECLARE_GLOBAL_DATA_PTR;
 unsigned int board_rev;
 static int init_pmic_lcd(void);
 
+#ifdef CONFIG_REVISION_TAG
 u32 get_board_rev(void)
 {
 	return board_rev;
 }
+#endif
 
 int exynos_power_init(void)
 {