fastboot: Add OEM run command
This adds the UUU UCmd functionality as an OEM command. While the
fastboot tool allows sending arbitrary commands as long as they are
prefixed with "oem". This allows running generic U-Boot commands over
fastboot without UUU, which is especially useful when not using USB.
This is really the route we should have gone in the first place when
adding these commands.
While we're here, clean up the UUU Kconfig a bit.
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
diff --git a/doc/android/fastboot.rst b/doc/android/fastboot.rst
index 7611f07..1ad8a89 100644
--- a/doc/android/fastboot.rst
+++ b/doc/android/fastboot.rst
@@ -28,6 +28,7 @@
- ``oem partconf`` - this executes ``mmc partconf %x <arg> 0`` to configure eMMC
with <arg> = boot_ack boot_partition
- ``oem bootbus`` - this executes ``mmc bootbus %x %s`` to configure eMMC
+- ``oem run`` - this executes an arbitrary U-Boot command
Support for both eMMC and NAND devices is included.
@@ -227,6 +228,23 @@
Starting kernel ...
+Running Shell Commands
+^^^^^^^^^^^^^^^^^^^^^^
+
+Normally, arbitrary U-Boot command execution is not enabled. This is so
+fastboot can be used to update systems using verified boot. However, such
+functionality can be useful for production or when verified boot is not in use.
+Enable ``CONFIG_FASTBOOT_OEM_RUN`` to use this functionality. This will enable
+``oem run`` command, which can be used with the fastboot client. For example,
+to print "Hello at 115200 baud" (or whatever ``CONFIG_BAUDRATE`` is), run::
+
+ $ fastboot oem run:'echo Hello at $baudrate baud'
+
+You can run any command you would normally run on the U-Boot command line,
+including multiple commands (using e.g. ``;`` or ``&&``) and control structures
+(``if``, ``while``, etc.). The exit code of ``fastboot`` will reflect the exit
+code of the command you ran.
+
References
----------