[PATCH] Makefile: doesn't need check stack size when dtb is not built

[AKASHI Takahiro]

The commit 5fed97af20da ("Makefile: ensure DTB doesn't overflow into
initial stack") adds an extra check for stack size in BSS if
CONFIG_SYS_INIT_SP_BSS_OFFSET is enabled.
This check, however, doesn't make sense under the configuration where
control dtb won't be built in and it should be void in such cases.

Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
Fixes: 5fed97af20da ("Makefile: ensure DTB doesn't overflow into
	initial stack")
---
 Makefile | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 0af89e0a7881..78efd7e9e250 100644
--- a/Makefile
+++ b/Makefile
@@ -1208,7 +1208,10 @@ binary_size_check: u-boot-nodtb.bin FORCE
 		fi \
 	fi
 
-ifdef CONFIG_INIT_SP_RELATIVE
+ifeq ($(CONFIG_INIT_SP_RELATIVE),y)
+ifneq ($(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_OF_HOSTFILE),)
+# u-boot.dtb will be built only if one of those options is enabled
+
 ifneq ($(CONFIG_SYS_MALLOC_F_LEN),)
 subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN)))
 else
@@ -1233,6 +1236,10 @@ init_sp_bss_offset_check: u-boot.dtb FORCE
 		echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \
 		exit 1 ; \
 	fi
+else
+init_sp_bss_offset_check:
+
+endif
 endif
 
 u-boot-nodtb.bin: u-boot FORCE
-- 
2.25.1