summaryrefslogtreecommitdiff
path: root/README
diff options
context:
space:
mode:
authorJoe Hershberger <joe.hershberger@ni.com>2012-12-11 22:16:34 -0600
committerTom Rini <trini@ti.com>2012-12-13 11:46:56 -0700
commit267541f776f1e2bec21681c6e39a4c93af9621cf (patch)
tree861ff411eab98193f9914d30ec420628e79912e0 /README
parentfffad71bc489cf224eda6d826a1645423852ee45 (diff)
downloadu-boot-imx-267541f776f1e2bec21681c6e39a4c93af9621cf.zip
u-boot-imx-267541f776f1e2bec21681c6e39a4c93af9621cf.tar.gz
u-boot-imx-267541f776f1e2bec21681c6e39a4c93af9621cf.tar.bz2
env: Add support for access control to .flags
Add support for read-only, write-once, and change-default. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Diffstat (limited to 'README')
-rw-r--r--README13
1 files changed, 12 insertions, 1 deletions
diff --git a/README b/README
index 08c0fcc..b5c1c03 100644
--- a/README
+++ b/README
@@ -3128,7 +3128,8 @@ Configuration Settings:
The format of the list is:
type_attribute = [s|d|x|b|i|m]
- attributes = type_attribute
+ access_atribute = [a|r|o|c]
+ attributes = type_attribute[access_atribute]
entry = variable_name[:attributes]
list = entry[,list]
@@ -3140,6 +3141,12 @@ Configuration Settings:
i - IP address
m - MAC address
+ The access attributes are:
+ a - Any (default)
+ r - Read-only
+ o - Write-once
+ c - Change-default
+
- CONFIG_ENV_FLAGS_LIST_DEFAULT
Define this to a list (string) to define the ".flags"
envirnoment variable in the default or embedded environment.
@@ -3151,6 +3158,10 @@ Configuration Settings:
list, simply add an entry for the same variable name to the
".flags" variable.
+- CONFIG_ENV_ACCESS_IGNORE_FORCE
+ If defined, don't allow the -f switch to env set override variable
+ access flags.
+
The following definitions that deal with the placement and management
of environment data (variable area); in general, we support the
following configurations: