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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2016-06-27 16:23:01 +0900 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-07-01 17:42:55 -0400 |
| commit | 2fbb8462b0e18893b4b739705db047ffda82d4fc (patch) | |
| tree | b3ce336b273749c6368e3b191cda8479008b366e /doc/README.autoboot | |
| parent | 9060970f4d89c79212982afbf9148dcbc94dcf75 (diff) | |
| download | u-boot-2fbb8462b0e18893b4b739705db047ffda82d4fc.tar.gz u-boot-2fbb8462b0e18893b4b739705db047ffda82d4fc.tar.bz2 u-boot-2fbb8462b0e18893b4b739705db047ffda82d4fc.zip | |
autoboot: remove CONFIG_ZERO_BOOTDELAY_CHECK
As the help message of CONFIG_BOOTDELAY says, CONFIG_BOOTDELAY=-2
means the autoboot with no delay, with no abort check even if
CONFIG_ZERO_BOOTDELAY_CHECK is defined.
To sum up, the autoboot behaves as follows:
[1] CONFIG_BOOTDELAY=0 && CONFIG_ZERO_BOOTDELAY_CHECK=y
autoboot with no delay, but you can abort it by key input
[2] CONFIG_BOOTDELAY=0 && CONFIG_ZERO_BOOTDELAY_CHECK=n
autoboot with no delay, with no check for abort
[3] CONFIG_BOOTDELAY=-1
disable autoboot
[4] CONFIG_BOOTDELAY=-2
autoboot with no delay, with no check for abort
As you notice, [2] and [4] come to the same result, which means we
do not need CONFIG_ZERO_BOOTDELAY_CHECK. We can control all the
cases only by CONFIG_BOOTDELAY, like this:
[1] CONFIG_BOOTDELAY=0
autoboot with no delay, but you can abort it by key input
[2] CONFIG_BOOTDELAY=-1
disable autoboot
[3] CONFIG_BOOTDELAY=-2
autoboot with no delay, with no check for abort
This commit converts the logic as follow:
CONFIG_BOOTDELAY=0 && CONFIG_ZERO_BOOTDELAY_CHECK=n
--> CONFIG_BOOTDELAY=-2
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Christian Riesch <christian.riesch@omicronenergy.com>
Acked-by: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
Diffstat (limited to 'doc/README.autoboot')
| -rw-r--r-- | doc/README.autoboot | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/doc/README.autoboot b/doc/README.autoboot index 227e3b5dbb..30fd0b0e88 100644 --- a/doc/README.autoboot +++ b/doc/README.autoboot @@ -132,14 +132,6 @@ What they do provides an escape sequence from the limited "password" strings. - - CONFIG_ZERO_BOOTDELAY_CHECK - - If this option is defined, you can stop the autoboot process - by hitting a key even in that case when "bootdelay" has been - set to 0. You can set "bootdelay" to a negative value to - prevent the check for console input. - CONFIG_RESET_TO_RETRY (Only effective when CONFIG_BOOT_RETRY_TIME is also set) |