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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2016-04-26 11:18:28 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2016-04-28 16:43:15 +0200 |
| commit | acd643788b6f7d7c26ebdb00a39dba3338ebfcee (patch) | |
| tree | d2de2da8b9e7e6c3bf002132f7e496bafa9ca73d /common/Kconfig | |
| parent | 9a7b5d4cdc975f15344c207f9972b2a25b874daf (diff) | |
| download | barebox-acd643788b6f7d7c26ebdb00a39dba3338ebfcee.tar.gz barebox-acd643788b6f7d7c26ebdb00a39dba3338ebfcee.tar.xz | |
Kconfig: Create Kconfig symbol for NVVAR
nvvar support not only needs globalvar, but also persistent
environment storage. Add a separate default-y option which
depends on ENV_HANDLING for this case. Make the option visible
to let the user decide whether he wants to have this option
and add a help text to make this decision easier.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'common/Kconfig')
| -rw-r--r-- | common/Kconfig | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/common/Kconfig b/common/Kconfig index a37141e3c7..fdf2f0da13 100644 --- a/common/Kconfig +++ b/common/Kconfig @@ -161,6 +161,21 @@ config GLOBALVAR variables are used to control several aspects of the system behaviour. If unsure, say yes here. +config NVVAR + bool "Non volatile global environment variables support" + default y if !SHELL_NONE + depends on GLOBALVAR + depends on ENV_HANDLING + help + Non volatile environment variables begin with "nv.". They behave like + global variables above, but their values are saved in the environment + storage with 'saveenv' and thus are persistent over restarts. nv variables + are coupled with global variables of the same name. Setting "nv.foo" results + in "global.foo" changed also (but not the other way round: setting "global.foo" + leaves "nv.foo" untouched). The idea is that nv variables can store defaults + while global variables can be changed during runtime without changing the + default. + menu "memory layout" source "pbl/Kconfig" |