[PATCH v2 4/4] malloc: Enable SYS_MALLOC_RUNTIME_INIT by default in SPL

[Sean Anderson]

On boards with size restrictions, 1-2k can be a significant fraction of
the binary size. Add a new SPL version of SYS_MALLOC_RUNTIME_INIT and
enable it by default.

Signed-off-by: Sean Anderson <sean.anderson at seco.com>
---

(no changes since v1)

 Kconfig | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Kconfig b/Kconfig
index 4b32286b69d..3cb31a93464 100644
--- a/Kconfig
+++ b/Kconfig
@@ -381,6 +381,17 @@ config SYS_MALLOC_RUNTIME_INIT
          reduce the size of U-Boot by letting malloc's data reside in .bss
          instead of .data.
 
+config SPL_SYS_MALLOC_RUNTIME_INIT
+	bool "Initialize malloc's internal data at runtime in SPL"
+	default y
+	depends on SPL
+	help
+	 Initialize malloc's internal data structures at SPL runtime, rather
+	 than at compile-time. This is necessary if relocating the malloc arena
+	 from a smaller static memory to a large DDR memory. It can also reduce
+	 the size of U-Boot by letting malloc's data reside in .bss instead of
+	 .data.
+
 config TOOLS_DEBUG
 	bool "Enable debug information for tools"
 	help
-- 
2.25.1