1 /*
2 * Copyright (c) 2017-2021 Nordic Semiconductor ASA
3 * Copyright (c) 2015 Runtime Inc
4 * Copyright (c) 2017 Linaro Ltd
5 * Copyright (c) 2020 Gerson Fernando Budke <nandojve@gmail.com>
6 * Copyright (c) 2023 Sensorfy B.V.
7 *
8 * SPDX-License-Identifier: Apache-2.0
9 */
10
11 #include <errno.h>
12
13 #include <zephyr/types.h>
14 #include <stddef.h>
15 #include <sys/types.h>
16 #include <zephyr/device.h>
17 #include <zephyr/storage/flash_map.h>
18 #include "flash_map_priv.h"
19 #include <zephyr/drivers/flash.h>
20 #include <zephyr/init.h>
21
flash_area_foreach(flash_area_cb_t user_cb,void * user_data)22 void flash_area_foreach(flash_area_cb_t user_cb, void *user_data)
23 {
24 for (int i = 0; i < flash_map_entries; i++) {
25 user_cb(&flash_map[i], user_data);
26 }
27 }
28
flash_area_open(uint8_t id,const struct flash_area ** fap)29 int flash_area_open(uint8_t id, const struct flash_area **fap)
30 {
31 const struct flash_area *area;
32
33 if (flash_map == NULL) {
34 return -EACCES;
35 }
36
37 area = get_flash_area_from_id(id);
38 if (area == NULL) {
39 return -ENOENT;
40 }
41
42 if (!area->fa_dev || !device_is_ready(area->fa_dev)) {
43 return -ENODEV;
44 }
45
46 *fap = area;
47
48 return 0;
49 }
50
flash_area_close(const struct flash_area * fa)51 void flash_area_close(const struct flash_area *fa)
52 {
53 /* nothing to do for now */
54 }
55
flash_area_read(const struct flash_area * fa,off_t off,void * dst,size_t len)56 int flash_area_read(const struct flash_area *fa, off_t off, void *dst,
57 size_t len)
58 {
59 if (!is_in_flash_area_bounds(fa, off, len)) {
60 return -EINVAL;
61 }
62
63 return flash_read(fa->fa_dev, fa->fa_off + off, dst, len);
64 }
65
flash_area_write(const struct flash_area * fa,off_t off,const void * src,size_t len)66 int flash_area_write(const struct flash_area *fa, off_t off, const void *src,
67 size_t len)
68 {
69 if (!is_in_flash_area_bounds(fa, off, len)) {
70 return -EINVAL;
71 }
72
73 return flash_write(fa->fa_dev, fa->fa_off + off, (void *)src, len);
74 }
75
flash_area_erase(const struct flash_area * fa,off_t off,size_t len)76 int flash_area_erase(const struct flash_area *fa, off_t off, size_t len)
77 {
78 if (!is_in_flash_area_bounds(fa, off, len)) {
79 return -EINVAL;
80 }
81
82 return flash_erase(fa->fa_dev, fa->fa_off + off, len);
83 }
84
flash_area_align(const struct flash_area * fa)85 uint32_t flash_area_align(const struct flash_area *fa)
86 {
87 return flash_get_write_block_size(fa->fa_dev);
88 }
89
flash_area_has_driver(const struct flash_area * fa)90 int flash_area_has_driver(const struct flash_area *fa)
91 {
92 if (!device_is_ready(fa->fa_dev)) {
93 return -ENODEV;
94 }
95
96 return 1;
97 }
98
flash_area_get_device(const struct flash_area * fa)99 const struct device *flash_area_get_device(const struct flash_area *fa)
100 {
101 return fa->fa_dev;
102 }
103
104 #if CONFIG_FLASH_MAP_LABELS
flash_area_label(const struct flash_area * fa)105 const char *flash_area_label(const struct flash_area *fa)
106 {
107 return fa->fa_label;
108 }
109 #endif
110
flash_area_erased_val(const struct flash_area * fa)111 uint8_t flash_area_erased_val(const struct flash_area *fa)
112 {
113 const struct flash_parameters *param;
114
115 param = flash_get_parameters(fa->fa_dev);
116
117 return param->erase_value;
118 }
119
