MIPS: Introduce support for Platform definitions

Move platform specific definitions to the platfrom directories.

Each platform shall do the following:
1) include an entry in arch/mips/Kbuild.platforms
2) add relevant definitions to arch/mips/<platform>/Platform

This commits changes ar7 to the new scheme as an example.

Introducing a platform speecific Platfrom file has following advantages:
1) decentralization of platfrom definitions
2) simplification af arch/mips/Makefile
3) force all platfrom to build with -Werror (done in arch/mips/Kbuild)

[Ralf: Remove forgotten -Werror from AR7 Makefile]

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
To: linux-mips <linux-mips@linux-mips.org>
To: Wu Zhangjin <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/1302/
Patchwork: http://patchwork.linux-mips.org/patch/1308/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

5 files changed, 16 insertions, 8 deletions

diff --git a/arch/mips/Kbuild b/arch/mips/Kbuild
index 6ce938200bbd..e322d65f33a4 100644
--- a/arch/mips/Kbuild
+++ b/arch/mips/Kbuild
@@ -3,6 +3,9 @@
 # CFLAGS_<file.o> := -Wno-error
 subdir-ccflags-y := -Werror
 
+# platform specific definitions
+include arch/mips/Kbuild.platforms
+obj-y := $(platform-y)
 
 # mips object files
 # The object files are linked as core-y files would be linked
diff --git a/arch/mips/Kbuild.platforms b/arch/mips/Kbuild.platforms
new file mode 100644
index 000000000000..681b2d4d88f5
--- /dev/null
+++ b/arch/mips/Kbuild.platforms
@@ -0,0 +1,6 @@
+# All platforms listed in alphabetic order
+
+platforms += ar7
+
+# include the platform specific files
+include $(patsubst %, $(srctree)/arch/mips/%/Platform, $(platforms))
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index d39be4708289..b4ec8e9960b3 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -209,13 +209,7 @@ endif
 #
 # Board-dependent options and extra files
 #
-
-#
-# Texas Instruments AR7
-#
-core-$(CONFIG_AR7)              += arch/mips/ar7/
-cflags-$(CONFIG_AR7)            += -I$(srctree)/arch/mips/include/asm/mach-ar7
-load-$(CONFIG_AR7)              += 0xffffffff94100000
+include $(srctree)/arch/mips/Kbuild.platforms
 
 #
 # Acer PICA 61, Mips Magnum 4000 and Olivetti M700.
diff --git a/arch/mips/ar7/Makefile b/arch/mips/ar7/Makefile
index 26bc5da18997..7435e44b3964 100644
--- a/arch/mips/ar7/Makefile
+++ b/arch/mips/ar7/Makefile
@@ -8,4 +8,3 @@ obj-y := \
         platform.o \
         gpio.o \
         clock.o
-EXTRA_CFLAGS += -Werror
diff --git a/arch/mips/ar7/Platform b/arch/mips/ar7/Platform
new file mode 100644
index 000000000000..0bf85c416c6c
--- /dev/null
+++ b/arch/mips/ar7/Platform
@@ -0,0 +1,6 @@
+#
+# Texas Instruments AR7
+#
+platform-$(CONFIG_AR7)          += ar7/
+cflags-$(CONFIG_AR7)            += -I$(srctree)/arch/mips/include/asm/mach-ar7
+load-$(CONFIG_AR7)              += 0xffffffff94100000