diff options
| author | Robbie Zhang <robbie.zhang@intel.com> | 2016-12-23 11:43:07 -0800 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-01-09 18:16:10 +0100 |
| commit | ed840023a84915ece4bc63edffef979926107d55 (patch) | |
| tree | 8a5c362b16aba0a47273bc35a802e93bb4e07c1c /src/include | |
| parent | 23ceb7d240a16427d07746cc3c6b06a8418c9a1e (diff) | |
chromeos: Implement locating and decoding wifi sar data from VPD
A VPD entry "wifi_sar" needs to be created which contains a heximal
encoded string in length of 40 bytes. get_wifi_sar_limits() function
retrieves and decodes the data from the VPD entry, which would later
be consumed by platform code.
BUG=chrome-os-partner:60821
TEST=Build and boot lars and reef
Change-Id: I923b58a63dc1f8a7fdd685cf1c618b2fdf4e7061
Signed-off-by: Robbie Zhang <robbie.zhang@intel.com>
Reviewed-on: https://review.coreboot.org/17958
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/sar.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/include/sar.h b/src/include/sar.h new file mode 100644 index 0000000000..4653dd33ae --- /dev/null +++ b/src/include/sar.h @@ -0,0 +1,38 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 Intel Corp. + * + * 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 + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#ifndef _SAR_H_ +#define _SAR_H_ + +#include <stdint.h> + +#define NUM_SAR_LIMITS 4 +#define BYTES_PER_SAR_LIMIT 10 + +/* Wifi SAR limit table structure */ +struct wifi_sar_limits { + /* Total 4 SAR limit sets, each has 10 bytes */ + uint8_t sar_limit[NUM_SAR_LIMITS][BYTES_PER_SAR_LIMIT]; +}; + +/* + * Retrieve the SAR limits data from VPD and decode it. + * sar_limits: Pointer to wifi_sar_limits where the resulted data is stored + * + * Returns: 0 on success, -1 on errors (The VPD entry doesn't exist, or the + * VPD entry contains non-heximal value.) + */ +int get_wifi_sar_limits(struct wifi_sar_limits *sar_limits); + +#endif /* _SAR_H_ */ |