From: Stephen Warren <swarren@xxxxxxxxxx>
The flashing process resets the U-Boot environment to the built-in
default. Allow the user to specify some non-default values to be set
before saving the environment. This can be useful e.g. to set up the
default boot target:
./tegra-uboot-flasher flash --env boot_targets dhcp beaver
Signed-off-by: Stephen Warren <swarren@xxxxxxxxxx>
---
v2:
* Don't fail if no --env cmdline options are used.
* Enhance help text to:
- Explicitly mention that the option can be used multiple times.
(in --help output only, not the short help)
- Say "--env VAR VALUE" not "--env ENV ENV" so the syntax is clear.
---
tegra-uboot-flasher | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/tegra-uboot-flasher b/tegra-uboot-flasher
index c9eb811db937..ea36ba1efd7a 100755
--- a/tegra-uboot-flasher
+++ b/tegra-uboot-flasher
@@ -195,6 +195,9 @@ def func_flash():
# Perhaps U-Boot should set $boardname based on the ID EEPROM; then we wouldn't need this
if config['dtbfn-extra'] != '':
bootcmd += 'setenv board ' + boardname + config['dtbfn-extra'] + ' ; '
+ if args.env:
+ for (var, value) in args.env:
+ bootcmd += 'setenv %s %s ; ' % (var, value)
bootcmd += 'saveenv ; '
# To update the bootloader, reset.
# If wanting to run installer, set installer_args.configname in environment, 'run bootcmd'
@@ -283,6 +286,10 @@ parser_flash.add_argument('--flash-image', type=str,
help='The flash image to write, instead of U-Boot itself')
parser_flash.add_argument('--gen-only', action='store_true',
help='Just create the work-dir; don\'t actually flash the image')
+parser_flash.add_argument('--env', type=str, nargs=2, action='append',
+ metavar=("VAR", "VALUE"),
+ help='Set a U-Boot environment variable after flashing. This option ' +
+ 'may be given multiple times')
parser_exec = subparsers.add_parser('exec',
help='Download and execute an unmodified bootloader binary, named ' +
--
1.8.1.5
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