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