binman: Indicate how to make binman verbose
Add notes about how to make binman produce verbose logging when building.
Add a comment on how to do this.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/binman/README b/tools/binman/README
index a00c902..45f0a0c 100644
--- a/tools/binman/README
+++ b/tools/binman/README
@@ -637,7 +637,8 @@
Binman normally operates silently unless there is an error, in which case it
just displays the error. The -D/--debug option can be used to create a full
-backtrace when errors occur.
+backtrace when errors occur. You can use BINMAN_DEBUG=1 when building to select
+this.
Internally binman logs some output while it is running. This can be displayed
by increasing the -v/--verbosity from the default of 1:
@@ -649,6 +650,7 @@
4: detailed information about each operation
5: debug (all output)
+You can use BINMAN_VERBOSE=5 (for example) when building to select this.
Hashing Entries
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