string: Provide a slimmed-down memset()

[u-boot] / lib / Kconfig

diff --git a/lib/Kconfig b/lib/Kconfig
index 65c01573e194e13b0d4a9c64923c840525782312..5115d047f86f6c192440705c645d7d4d02140181 100644 (file)
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -52,6 +52,15 @@ config LIB_RAND
        help
          This library provides pseudo-random number generator functions.
 
+config SPL_TINY_MEMSET
+       bool "Use a very small memset() in SPL"
+       help
+         The faster memset() is the arch-specific one (if available) enabled
+         by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
+         better performance by writing a word at a time. But in very
+         size-constrained envrionments even this may be too big. Enable this
+         option to reduce code size slightly at the cost of some speed.
+
 source lib/dhry/Kconfig
 
 source lib/rsa/Kconfig