1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/*
* Copyright (C) 2022-2024, Xiaohua Semiconductor Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-04-28 CDT first version
*/
#include <fal.h>
#include <sfud.h>
#ifdef RT_USING_SFUD
#include <dev_spi_flash_sfud.h>
#endif
#ifndef FAL_USING_NOR_FLASH_DEV_NAME
#define FAL_USING_NOR_FLASH_DEV_NAME "w25q64"
#endif
#define EXT_NOR_FLASH_START_ADDR 0
#define EXT_NOR_FLASH_CHIP_SIZE 8 * 1024 * 1024
#define EXT_NOR_FLASH_BLOCK_SIZE 4096
#define EXT_NOR_FLASH_WR_MIN_GRAN 1
static int init(void);
static int read(long offset, rt_uint8_t *buf, rt_size_t size);
static int write(long offset, const rt_uint8_t *buf, rt_size_t size);
static int erase(long offset, rt_size_t size);
static sfud_flash_t sfud_dev = NULL;
struct fal_flash_dev ext_nor_flash0 = {
.name = FAL_USING_NOR_FLASH_DEV_NAME,
.addr = EXT_NOR_FLASH_START_ADDR,
.len = EXT_NOR_FLASH_CHIP_SIZE,
.blk_size = EXT_NOR_FLASH_BLOCK_SIZE,
.ops = { init, read, write, erase },
.write_gran = EXT_NOR_FLASH_WR_MIN_GRAN,
};
static int init(void)
{
/* RT-Thread RTOS platform */
sfud_dev = rt_sfud_flash_find_by_dev_name(FAL_USING_NOR_FLASH_DEV_NAME);
if (NULL == sfud_dev)
{
return -1;
}
/* update the flash chip information */
ext_nor_flash0.blk_size = sfud_dev->chip.erase_gran;
ext_nor_flash0.len = sfud_dev->chip.capacity;
return 0;
}
static int read(long offset, rt_uint8_t *buf, rt_size_t size)
{
RT_ASSERT(sfud_dev);
RT_ASSERT(sfud_dev->init_ok);
sfud_read(sfud_dev, ext_nor_flash0.addr + offset, size, buf);
return size;
}
static int write(long offset, const rt_uint8_t *buf, rt_size_t size)
{
RT_ASSERT(sfud_dev);
RT_ASSERT(sfud_dev->init_ok);
if (sfud_write(sfud_dev, ext_nor_flash0.addr + offset, size, buf) != SFUD_SUCCESS)
{
return -1;
}
return size;
}
static int erase(long offset, rt_size_t size)
{
RT_ASSERT(sfud_dev);
RT_ASSERT(sfud_dev->init_ok);
if (sfud_erase(sfud_dev, ext_nor_flash0.addr + offset, size) != SFUD_SUCCESS)
{
return -1;
}
return size;
}
|
