xref: /kernel/liteos_a/fs/rootfs/los_bootargs.h (revision 0d163575) 
1/*
2 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without modification,
5 * are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright notice, this list of
8 *    conditions and the following disclaimer.
9 *
10 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
11 *    of conditions and the following disclaimer in the documentation and/or other materials
12 *    provided with the distribution.
13 *
14 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
15 *    to endorse or promote products derived from this software without specific prior written
16 *    permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
22 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
25 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
27 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
28 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef _LOS_BOOTARGS_H
32#define _LOS_BOOTARGS_H
33
34#include "los_typedef.h"
35
36#define BYTES_PER_GBYTE         (1 << 30)
37#define BYTES_PER_MBYTE         (1 << 20)
38#define BYTES_PER_KBYTE         (1 << 10)
39#define COMMAND_LINE_ADDR       (LOSCFG_BOOTENV_ADDR * BYTES_PER_KBYTE)
40#define COMMAND_LINE_SIZE       1024
41#define MAX_ARGS_NUM            100
42#ifdef LOSCFG_STORAGE_EMMC
43#define EMMC_SEC_SIZE           512
44#endif
45
46struct BootArgs {
47    CHAR *argName;
48    CHAR *argValue;
49};
50
51INT32 LOS_GetCmdLine(VOID);
52VOID LOS_FreeCmdLine(VOID);
53INT32 LOS_ParseBootargs(VOID);
54INT32 LOS_GetArgValue(CHAR *argName, CHAR **argValue);
55UINT64 LOS_GetAlignsize(VOID);
56UINT64 LOS_SizeStrToNum(CHAR *value);
57
58#ifdef LOSCFG_BOOTENV_RAM
59CHAR *OsGetArgsAddr(VOID);
60#endif
61#endif /* _LOS_BOOTARGS_H */