/* SPDX-License-Identifier: GPL-2.0-only */ /* * vpd_decode.h * * Google VPD decoding routines. * * Copyright 2017 Google Inc. */ #ifndef __VPD_DECODE_H #define __VPD_DECODE_H #include <linux/types.h> enum { VPD_OK = 0, VPD_FAIL, }; enum { VPD_TYPE_TERMINATOR = 0, VPD_TYPE_STRING, VPD_TYPE_INFO = 0xfe, VPD_TYPE_IMPLICIT_TERMINATOR = 0xff, }; /* Callback for vpd_decode_string to invoke. */ typedef int vpd_decode_callback(const u8 *key, u32 key_len, const u8 *value, u32 value_len, void *arg); /* * vpd_decode_string * * Given the encoded string, this function invokes callback with extracted * (key, value). The *consumed will be plused the number of bytes consumed in * this function. * * The input_buf points to the first byte of the input buffer. * * The *consumed starts from 0, which is actually the next byte to be decoded. * It can be non-zero to be used in multiple calls. * * If one entry is successfully decoded, sends it to callback and returns the * result. */ int vpd_decode_string(const u32 max_len, const u8 *input_buf, u32 *consumed, vpd_decode_callback callback, void *callback_arg); #endif /* __VPD_DECODE_H */