ppc: Enable generic board support

This enables generic board support so that ppc boards can define
CONFIG_SYS_GENERIC_BOARD.

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

arch/powerpc/config.mk

@@ -29,6 +29,9 @@ PLATFORM_RELFLAGS += -fpic -mrelocatable -ffunction-sections -fdata-sections
 PLATFORM_CPPFLAGS += -DCONFIG_PPC -D__powerpc__
 PLATFORM_LDFLAGS  += -n
 
+# Support generic board on PPC
+__HAVE_ARCH_GENERIC_BOARD := y
+
 #
 # When cross-compiling on NetBSD, we have to define __PPC__ or else we
 # will pick up a va_list declaration that is incompatible with the

arch/powerpc/include/asm/u-boot.h

@@ -34,6 +34,11 @@
  * include/asm-ppc/u-boot.h
  */
 
+#ifdef CONFIG_SYS_GENERIC_BOARD
+/* Use the generic board which requires a unified bd_info */
+#include <asm-generic/u-boot.h>
+#else
+
 #ifndef __ASSEMBLY__
 
 typedef struct bd_info {
@@ -144,6 +149,8 @@ typedef struct bd_info {
 
 #endif /* __ASSEMBLY__ */
 
+#endif /* !CONFIG_SYS_GENERIC_BOARD */
+
 /* For image.h:image_check_target_arch() */
 #define IH_ARCH_DEFAULT IH_ARCH_PPC
 

arch/powerpc/lib/Makefile

@@ -59,8 +59,10 @@ SOBJS-y	+= reloc.o
 
 COBJS-$(CONFIG_BAT_RW) += bat_rw.o
 ifndef CONFIG_SPL_BUILD
+ifndef CONFIG_SYS_GENERIC_BOARD
 COBJS-y	+= board.o
 endif
+endif
 COBJS-y	+= bootm.o
 COBJS-y	+= cache.o
 COBJS-y	+= extable.o