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-rw-r--r--Documentation/ramoops.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/ramoops.txt b/Documentation/ramoops.txt
index 470d2c4db6ff..4ba7db231cb2 100644
--- a/Documentation/ramoops.txt
+++ b/Documentation/ramoops.txt
@@ -30,6 +30,11 @@ variable while setting 0 in that variable dumps only the panics.
The module uses a counter to record multiple dumps but the counter gets reset
on restart (i.e. new dumps after the restart will overwrite old ones).
+Ramoops also supports software ECC protection of persistent memory regions.
+This might be useful when a hardware reset was used to bring the machine back
+to life (i.e. a watchdog triggered). In such cases, RAM may be somewhat
+corrupt, but usually it is restorable.
+
2. Setting the parameters
Setting the ramoops parameters can be done in 2 different manners:
@@ -46,6 +51,7 @@ static struct ramoops_platform_data ramoops_data = {
.mem_address = <...>,
.record_size = <...>,
.dump_oops = <...>,
+ .ecc = <...>,
};
static struct platform_device ramoops_dev = {