common/board_f: move board_init_f_mem() from #else CONFIG_X86

[people/ms/u-boot.git] / Kconfig

diff --git a/Kconfig b/Kconfig
index b879461b964233fcf97ce537d22fd08551c31f15..b5968d74a179a3e37085a86eb0888a1e6ef07271 100644 (file)
--- a/Kconfig
+++ b/Kconfig
@@ -54,7 +54,7 @@ config CC_OPTIMIZE_FOR_SIZE
 
 config SYS_MALLOC_F
        bool "Enable malloc() pool before relocation"
-       default 0x400
+       default y if DM
        help
          Before relocation memory is very limited on many platforms. Still,
          we can provide a small malloc() pool if needed. Driver model in
@@ -72,13 +72,31 @@ config SYS_MALLOC_F_LEN
          initial serial device and any others that are needed.
 
 menuconfig EXPERT
-        bool "Configure standard U-Boot features (expert users)"
-        help
-          This option allows certain base U-Boot options and settings
-          to be disabled or tweaked. This is for specialized
-          environments which can tolerate a "non-standard" U-Boot.
-          Only use this if you really know what you are doing.
-
+       bool "Configure standard U-Boot features (expert users)"
+       default y
+       help
+         This option allows certain base U-Boot options and settings
+         to be disabled or tweaked. This is for specialized
+         environments which can tolerate a "non-standard" U-Boot.
+         Only use this if you really know what you are doing.
+
+if EXPERT
+       config SYS_MALLOC_CLEAR_ON_INIT
+       bool "Init with zeros the memory reserved for malloc (slow)"
+       default y
+       help
+         This setting is enabled by default. The reserved malloc
+         memory is initialized with zeros, so first malloc calls
+         will return the pointer to the zeroed memory. But this
+         slows the boot time.
+
+         It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
+         value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
+         Then the boot time can be significantly reduced.
+         Warning:
+         When disabling this, please check if malloc calls, maybe
+         should be replaced by calloc - if expects zeroed memory.
+endif
 endmenu                # General setup
 
 menu "Boot images"