diff options
Diffstat (limited to 'src/mainboard/intel/jasperlake_rvp/board_id.c')
| -rw-r--r-- | src/mainboard/intel/jasperlake_rvp/board_id.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/mainboard/intel/jasperlake_rvp/board_id.c b/src/mainboard/intel/jasperlake_rvp/board_id.c index 1913d3f0fc..09d73cb9c3 100644 --- a/src/mainboard/intel/jasperlake_rvp/board_id.c +++ b/src/mainboard/intel/jasperlake_rvp/board_id.c @@ -1,6 +1,7 @@ /* * This file is part of the coreboot project. * + * Copyright 2020 The coreboot project Authors * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -29,7 +30,10 @@ static uint32_t get_board_id_via_ext_ec(void) return id; } -/* Get Board ID via EC I/O port write/read */ +/* + * Get Board ID via EC I/O port write/read + * Board id is 5 bit, so mask other bits while returning board id. + */ int get_board_id(void) { MAYBE_STATIC_NONZERO int id = -1; @@ -47,5 +51,6 @@ int get_board_id(void) } } } - return id; + + return (id & 0x1f); } |