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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * vpd_decode.h4 *5 * Google VPD decoding routines.6 *7 * Copyright 2017 Google Inc.8 */9 10#ifndef __VPD_DECODE_H11#define __VPD_DECODE_H12 13#include <linux/types.h>14 15enum {16 VPD_OK = 0,17 VPD_FAIL,18};19 20enum {21 VPD_TYPE_TERMINATOR = 0,22 VPD_TYPE_STRING,23 VPD_TYPE_INFO = 0xfe,24 VPD_TYPE_IMPLICIT_TERMINATOR = 0xff,25};26 27/* Callback for vpd_decode_string to invoke. */28typedef int vpd_decode_callback(const u8 *key, u32 key_len,29 const u8 *value, u32 value_len,30 void *arg);31 32/*33 * vpd_decode_string34 *35 * Given the encoded string, this function invokes callback with extracted36 * (key, value). The *consumed will be plused the number of bytes consumed in37 * this function.38 *39 * The input_buf points to the first byte of the input buffer.40 *41 * The *consumed starts from 0, which is actually the next byte to be decoded.42 * It can be non-zero to be used in multiple calls.43 *44 * If one entry is successfully decoded, sends it to callback and returns the45 * result.46 */47int vpd_decode_string(const u32 max_len, const u8 *input_buf, u32 *consumed,48 vpd_decode_callback callback, void *callback_arg);49 50#endif /* __VPD_DECODE_H */51