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authorSimon Glass <sjg@chromium.org>2016-03-13 19:07:28 -0600
committerTom Rini <trini@konsulko.com>2016-03-22 12:16:08 -0400
commit302a64875080d24932f1e4a8e2221e600b86629f (patch)
tree42431cc0a119478029ab191d9131fa9ed7031d29
parent633fb736ce0c7a50cacbf827d1506462d56a9354 (diff)
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Add an option to enable the command line
Add a new Kconfig option for the command line. This is enabled by default, but when disabled it will remove the command line. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
-rw-r--r--README8
-rw-r--r--cmd/Kconfig12
2 files changed, 20 insertions, 0 deletions
diff --git a/README b/README
index 523941f..4fec467 100644
--- a/README
+++ b/README
@@ -1108,6 +1108,14 @@ The following options need to be configured:
XXX - this list needs to get updated!
+- Removal of commands
+ If no commands are needed to boot, you can disable
+ CONFIG_CMDLINE to remove them. In this case, the command line
+ will not be available, and when U-Boot wants to execute the
+ boot command (on start-up) it will call board_run_command()
+ instead. This can reduce image size significantly for very
+ simple boot procedures.
+
- Regular expression support:
CONFIG_REGEX
If this variable is defined, U-Boot is linked against
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 7cdff04..cdcaff8 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -1,8 +1,20 @@
menu "Command line interface"
+config CMDLINE
+ bool "Support U-Boot commands"
+ default y
+ help
+ Enable U-Boot's command-line functions. This provides a means
+ to enter commands into U-Boot for a wide variety of purposes. It
+ also allows scripts (containing commands) to be executed.
+ Various commands and command categorys can be indivdually enabled.
+ Depending on the number of commands enabled, this can add
+ substantially to the size of U-Boot.
+
config HUSH_PARSER
bool "Use hush shell"
select SYS_HUSH_PARSER
+ depends on CMDLINE
help
This option enables the "hush" shell (from Busybox) as command line
interpreter, thus enabling powerful command line syntax like
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