__HAVE_ARCH_GENERIC_BOARD controls availabilty of generic board

We are introducing a new unified board setup. Add a check to make sure that
board config files do not define CONFIG_SYS_GENERIC_BOARD unless their
architecture defines __HAVE_ARCH_GENERIC_BOARD

__HAVE_ARCH_GENERIC_BOARD will currently not be the default setting, but
we can switch this later when most architecture support generic board.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/README b/README
index 869694f73f316d5fba716e951b6a13ccc9144057..bdce275145ac7a2d736dd69a930764da895f804c 100644 (file)
--- a/README
+++ b/README
@@ -3212,6 +3212,16 @@ Configuration Settings:
        If defined, don't allow the -f switch to env set override variable
        access flags.
 
+- CONFIG_SYS_GENERIC_BOARD
+       This selects the architecture-generic board system instead of the
+       architecture-specific board files. It is intended to move boards
+       to this new framework over time. Defining this will disable the
+       arch/foo/lib/board.c file and use common/board_f.c and
+       common/board_r.c instead. To use this option your architecture
+       must support it (i.e. must define __HAVE_ARCH_GENERIC_BOARD in
+       its config.mk file). If you find problems enabling this option on
+       your board please report the problem and send patches!
+
 The following definitions that deal with the placement and management
 of environment data (variable area); in general, we support the
 following configurations:

diff --git a/config.mk b/config.mk
index b7cd4814fe74e87633dc15d9c1c8f388c5b8da78..98864153e9b4d6ee55ee52071cc98d872bbace32 100644 (file)
--- a/config.mk
+++ b/config.mk
@@ -221,6 +221,14 @@ ifeq ($(CONFIG_SPL_BUILD),y)
 CPPFLAGS += -DCONFIG_SPL_BUILD
 endif
 
+# Does this architecture support generic board init?
+ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
+ifneq ($(CONFIG_SYS_GENERIC_BOARD),)
+$(error Your architecture does not support generic board. Please undefined \
+CONFIG_SYS_GENERIC_BOARD in your board config file)
+endif
+endif
+
 ifneq ($(RESET_VECTOR_ADDRESS),)
 CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS)
 endif