ARM: renesas: Simplify board Makefiles

Introduce board/renesas/common/Makefile and remove the multiple
duplicate copies of obj := ../common/*.o from board Makefiles.
Let the build system include the common Makefile using the
HAVE_VENDOR_COMMON_LIB and build the common objects that are
shared by all the boards that way. No functional change intended.

Some of the remaining board files which include board specific
settings have been updated to use obj-y += to avoid rewriting
the board obj-y target and avoid dropping object files from the
build.

The board/renesas/common/Makefile is now also used when building
RZG2L targets which also set CONFIG_RCAR_64 symbol and 32bit R-Car
Gen2 targets, however, this common code is specific to 64bit R-Car
only. Inhibit the build of this common code for RZG2L using extra
ifndef CONFIG_RZG2L and do not include any code for R-Car Gen2 so
far.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>

15 files changed, 55 insertions, 108 deletions

diff --git a/board/renesas/common/Makefile b/board/renesas/common/Makefile
index e69de29bb2d..c531738b22e 100644
--- a/board/renesas/common/Makefile
+++ b/board/renesas/common/Makefile
@@ -0,0 +1,47 @@
+#
+# board/renesas/whitehawk/Makefile
+#
+# Copyright (C) 2024 Marek Vasut <marek.vasut+renesas@mailbox.org>
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+# R-Car SoCs
+ifndef CONFIG_RZG2L
+
+# 32 bit SoCs
+ifdef CONFIG_RCAR_32
+ifdef CONFIG_RCAR_GEN2
+endif
+endif
+
+# 64 bit SoCs
+ifdef CONFIG_RCAR_64
+ifndef CONFIG_XPL_BUILD
+obj-y	+= common.o
+endif
+
+ifdef CONFIG_RCAR_GEN3
+ifdef CONFIG_XPL_BUILD
+obj-y	+= gen3-spl.o
+else
+obj-y	+= gen3-common.o
+ifdef CONFIG_R8A77970
+obj-y	+= v3-common.o
+endif
+ifdef CONFIG_R8A77980
+obj-y	+= v3-common.o
+endif
+endif
+endif
+
+ifdef CONFIG_RCAR_GEN4
+ifdef CONFIG_XPL_BUILD
+obj-y	+= gen4-spl.o
+else
+obj-y	+= gen4-common.o
+endif
+endif
+endif
+
+endif
diff --git a/board/renesas/common/common.c b/board/renesas/common/common.c
index 7fba8d10ff5..74ec0a46e6f 100644
--- a/board/renesas/common/common.c
+++ b/board/renesas/common/common.c
@@ -18,8 +18,6 @@
 #include <asm/system.h>
 #include <linux/libfdt.h>
 
-#ifdef CONFIG_RCAR_64
-
 DECLARE_GLOBAL_DATA_PTR;
 
 int dram_init(void)
@@ -67,5 +65,3 @@ int __weak board_init(void)
 {
 	return 0;
 }
-
-#endif
diff --git a/board/renesas/common/gen3-common.c b/board/renesas/common/gen3-common.c
index 05b01c846c6..94da00985d3 100644
--- a/board/renesas/common/gen3-common.c
+++ b/board/renesas/common/gen3-common.c
@@ -18,8 +18,6 @@
 #include <asm/arch/renesas.h>
 #include <linux/libfdt.h>
 
-#ifdef CONFIG_RCAR_64
-
 DECLARE_GLOBAL_DATA_PTR;
 
 /* If the firmware passed a device tree use it for e.g. U-Boot DRAM setup. */
@@ -178,4 +176,3 @@ int ft_board_setup(void *blob, struct bd_info *bd)
 	return 0;
 }
 #endif
-#endif
diff --git a/board/renesas/condor/Makefile b/board/renesas/condor/Makefile
deleted file mode 100644
index 3b1756b44cd..00000000000
--- a/board/renesas/condor/Makefile
+++ /dev/null
@@ -1,13 +0,0 @@
-#
-# board/renesas/condor/Makefile
-#
-# Copyright (C) 2019 Renesas Electronics Corporation
-#
-# SPDX-License-Identifier: GPL-2.0+
-#
-
-ifdef CONFIG_XPL_BUILD
-obj-y	:= ../common/gen3-spl.o
-else
-obj-y	:= ../common/gen3-common.o ../common/common.o
-endif
diff --git a/board/renesas/draak/Makefile b/board/renesas/draak/Makefile
index 6ce05bcd649..0a6a325d761 100644
--- a/board/renesas/draak/Makefile
+++ b/board/renesas/draak/Makefile
@@ -6,8 +6,6 @@
 # SPDX-License-Identifier: GPL-2.0+
 #
 
-ifdef CONFIG_XPL_BUILD
-obj-y	:= ../common/gen3-spl.o
-else
-obj-y	:= draak.o ../common/gen3-common.o ../common/common.o
+ifndef CONFIG_XPL_BUILD
+obj-y	+= draak.o
 endif
diff --git a/board/renesas/eagle/Makefile b/board/renesas/eagle/Makefile
deleted file mode 100644
index a5c18d81eef..00000000000
--- a/board/renesas/eagle/Makefile
+++ /dev/null
@@ -1,13 +0,0 @@
-#
-# board/renesas/eagle/Makefile
-#
-# Copyright (C) 2015 Renesas Electronics Corporation
-#
-# SPDX-License-Identifier: GPL-2.0+
-#
-
-ifdef CONFIG_XPL_BUILD
-obj-y	:= ../common/gen3-spl.o
-else
-obj-y	:= ../common/v3-common.o ../common/gen3-common.o ../common/common.o
-endif
diff --git a/board/renesas/ebisu/Makefile b/board/renesas/ebisu/Makefile
deleted file mode 100644
index 72130b76234..00000000000
--- a/board/renesas/ebisu/Makefile
+++ /dev/null
@@ -1,13 +0,0 @@
-#
-# board/renesas/ebisu/Makefile
-#
-# Copyright (C) 2018 Renesas Electronics Corporation
-#
-# SPDX-License-Identifier: GPL-2.0+
-#
-
-ifdef CONFIG_XPL_BUILD
-obj-y	:= ../common/gen3-spl.o
-else
-obj-y	:= ../common/gen3-common.o ../common/common.o
-endif
diff --git a/board/renesas/falcon/Makefile b/board/renesas/falcon/Makefile
deleted file mode 100644
index 430a842081a..00000000000
--- a/board/renesas/falcon/Makefile
+++ /dev/null
@@ -1,11 +0,0 @@
-#
-# board/renesas/falcon/Makefile
-#
-# Copyright (C) 2020 Renesas Electronics Corp.
-#
-# SPDX-License-Identifier: GPL-2.0+
-#
-
-ifndef CONFIG_XPL_BUILD
-obj-y	:= ../common/gen4-common.o ../common/common.o
-endif
diff --git a/board/renesas/grayhawk/Makefile b/board/renesas/grayhawk/Makefile
deleted file mode 100644
index a70bd3739f1..00000000000
--- a/board/renesas/grayhawk/Makefile
+++ /dev/null
@@ -1,9 +0,0 @@
-#
-# board/renesas/grayhawk/Makefile
-#
-# Copyright (C) 2023 Renesas Electronics Corp.
-#
-# SPDX-License-Identifier: GPL-2.0+
-#
-
-obj-y	:= ../common/gen4-common.o ../common/common.o
diff --git a/board/renesas/salvator-x/Makefile b/board/renesas/salvator-x/Makefile
index fe53366829c..538bbdddf76 100644
--- a/board/renesas/salvator-x/Makefile
+++ b/board/renesas/salvator-x/Makefile
@@ -6,8 +6,6 @@
 # SPDX-License-Identifier: GPL-2.0+
 #
 
-ifdef CONFIG_XPL_BUILD
-obj-y	:= ../common/gen3-spl.o
-else
-obj-y	:= salvator-x.o ../common/gen3-common.o ../common/common.o
+ifndef CONFIG_XPL_BUILD
+obj-y	+= salvator-x.o
 endif
diff --git a/board/renesas/spider/Makefile b/board/renesas/spider/Makefile
deleted file mode 100644
index e0f403d5fcc..00000000000
--- a/board/renesas/spider/Makefile
+++ /dev/null
@@ -1,9 +0,0 @@
-#
-# board/renesas/spider/Makefile
-#
-# Copyright (C) 2020 Renesas Electronics Corp.
-#
-# SPDX-License-Identifier: GPL-2.0+
-#
-
-obj-y	:= ../common/gen4-common.o ../common/common.o
diff --git a/board/renesas/ulcb/Makefile b/board/renesas/ulcb/Makefile
index 6b2aa8c29f6..4f2dd1ca211 100644
--- a/board/renesas/ulcb/Makefile
+++ b/board/renesas/ulcb/Makefile
@@ -6,8 +6,6 @@
 # SPDX-License-Identifier: GPL-2.0+
 #
 
-ifdef CONFIG_XPL_BUILD
-obj-y	:= ../common/gen3-spl.o
-else
-obj-y	:= ulcb.o cpld.o ../common/gen3-common.o ../common/common.o
+ifndef CONFIG_XPL_BUILD
+obj-y	+= ulcb.o cpld.o
 endif
diff --git a/board/renesas/v3hsk/Makefile b/board/renesas/v3hsk/Makefile
index 936047cb3d5..e6db77468e6 100644
--- a/board/renesas/v3hsk/Makefile
+++ b/board/renesas/v3hsk/Makefile
@@ -7,9 +7,6 @@
 # SPDX-License-Identifier: GPL-2.0+
 #
 
-ifdef CONFIG_XPL_BUILD
-obj-y	:= ../common/gen3-spl.o
-else
-obj-y	:= ../common/v3-common.o ../common/gen3-common.o ../common/common.o
+ifndef CONFIG_XPL_BUILD
 obj-$(CONFIG_SYSRESET)	+= cpld.o
 endif
diff --git a/board/renesas/v3msk/Makefile b/board/renesas/v3msk/Makefile
index 21eaddb6c28..211b8a32489 100644
--- a/board/renesas/v3msk/Makefile
+++ b/board/renesas/v3msk/Makefile
@@ -7,9 +7,6 @@
 # SPDX-License-Identifier: GPL-2.0+
 #
 
-ifdef CONFIG_XPL_BUILD
-obj-y	:= ../common/gen3-spl.o
-else
-obj-y	:= ../common/v3-common.o ../common/gen3-common.o ../common/common.o
+ifndef CONFIG_XPL_BUILD
 obj-$(CONFIG_SYSRESET)	+= cpld.o
 endif
diff --git a/board/renesas/whitehawk/Makefile b/board/renesas/whitehawk/Makefile
deleted file mode 100644
index f10eb82d221..00000000000
--- a/board/renesas/whitehawk/Makefile
+++ /dev/null
@@ -1,13 +0,0 @@
-#
-# board/renesas/whitehawk/Makefile
-#
-# Copyright (C) 2021 Renesas Electronics Corp.
-#
-# SPDX-License-Identifier: GPL-2.0+
-#
-
-ifdef CONFIG_SPL_BUILD
-obj-y	:= ../common/gen4-spl.o
-else
-obj-y	:= ../common/gen4-common.o ../common/common.o
-endif