sh: Enable skipping of bss on debug platforms for sh32 also.

This enables the same functionality that sh64 has for sh32. When running
on simulated hardware or via remote memory via the debug interface,
memory is gauranteed to be zero on boot already, and skipping the zeroing
of BSS has measurable boot time benefits.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 12 insertions, 3 deletions

diff --git a/arch/sh/Kconfig.debug b/arch/sh/Kconfig.debug
index 834a2d24342b..eef2fa940ce0 100644
--- a/arch/sh/Kconfig.debug
+++ b/arch/sh/Kconfig.debug
@@ -98,6 +98,18 @@ config IRQSTACKS
           for handling hard and soft interrupts.  This can help avoid
           overflowing the process kernel stacks.
 
+config SH_NO_BSS_INIT
+        bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)"
+        depends on DEBUG_KERNEL
+        default n
+        help
+          If running in painfully slow environments, such as an RTL
+          simulation or from remote memory via SHdebug, where the memory
+          can already be gauranteed to ber zeroed on boot, say Y.
+
+          For all other cases, say N. If this option seems perplexing, or
+          you aren't sure, say N.
+
 config MORE_COMPILE_OPTIONS
         bool "Add any additional compile options"
         help
@@ -125,9 +137,6 @@ config SH_ALPHANUMERIC
         bool "Enable debug outputs to on-board alphanumeric display"
         depends on SH_CAYMAN
 
-config SH_NO_BSS_INIT
-        bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)"
-
 endif
 
 endmenu