forked from micropython/micropython
-
Notifications
You must be signed in to change notification settings - Fork 171
/
samd_flash.c
188 lines (163 loc) · 6.78 KB
/
samd_flash.c
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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2019 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdio.h>
#include "py/runtime.h"
#include "extmod/vfs.h"
#include "samd_soc.h"
#include "hal_flash.h"
// ASF 4
#include "hal_flash.h"
#include "hal_init.h"
#include "hpl_gclk_base.h"
#if defined(MCU_SAMD21)
#include "lib/asf4/samd21/hpl/pm/hpl_pm_base.h"
#elif defined(MCU_SAMD51)
#include "lib/asf4/samd51/hpl/pm/hpl_pm_base.h"
#include "lib/asf4/samd51/hri/hri_mclk_d51.h"
#endif
static struct flash_descriptor flash_desc;
STATIC mp_int_t BLOCK_SIZE = VFS_BLOCK_SIZE_BYTES; // Board specific: mpconfigboard.h
extern const mp_obj_type_t samd_flash_type;
typedef struct _samd_flash_obj_t {
mp_obj_base_t base;
uint32_t flash_base;
uint32_t flash_size;
} samd_flash_obj_t;
extern uint8_t _oflash_fs, _sflash_fs;
// Build a Flash storage at top.
STATIC samd_flash_obj_t samd_flash_obj = {
.base = { &samd_flash_type },
.flash_base = (uint32_t)&_oflash_fs, // Get from MCU-Specific loader script.
.flash_size = (uint32_t)&_sflash_fs, // Get from MCU-Specific loader script.
};
// FLASH stuff
STATIC mp_obj_t samd_flash_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
// No args required. bdev=Flash(). Start Addr & Size defined in samd_flash_obj.
mp_arg_check_num(n_args, n_kw, 0, 0, false);
// Return singleton object.
return MP_OBJ_FROM_PTR(&samd_flash_obj);
}
// Flash init (from cctpy)
// Method is needed for when MP starts up in _boot.py
STATIC mp_obj_t samd_flash_init(void) {
#ifdef SAMD51
hri_mclk_set_AHBMASK_NVMCTRL_bit(MCLK);
#endif
#ifdef SAMD21
_pm_enable_bus_clock(PM_BUS_APBB, NVMCTRL);
#endif
flash_init(&flash_desc, NVMCTRL);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_0(samd_flash_init_obj, samd_flash_init);
// Function for ioctl.
STATIC mp_obj_t eraseblock(uint32_t sector_in) {
// Destination address aligned with page start to be erased.
uint32_t DEST_ADDR = sector_in; // Number of pages to be erased.
mp_int_t PAGE_SIZE = flash_get_page_size(&flash_desc); // adf4 API call
flash_erase(&flash_desc, DEST_ADDR, (BLOCK_SIZE / PAGE_SIZE));
return mp_const_none;
}
STATIC mp_obj_t samd_flash_version(void) {
return MP_OBJ_NEW_SMALL_INT(flash_get_version());
}
STATIC MP_DEFINE_CONST_FUN_OBJ_0(samd_flash_version_obj, samd_flash_version);
STATIC mp_obj_t samd_flash_size(void) {
// ASF4 API calls
mp_int_t PAGES = flash_get_total_pages(&flash_desc);
mp_int_t PAGE_SIZE = flash_get_page_size(&flash_desc);
return MP_OBJ_NEW_SMALL_INT(PAGES * PAGE_SIZE);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_0(samd_flash_size_obj, samd_flash_size);
STATIC mp_obj_t samd_flash_readblocks(size_t n_args, const mp_obj_t *args) {
uint32_t offset = (mp_obj_get_int(args[1]) * BLOCK_SIZE) + samd_flash_obj.flash_base;
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(args[2], &bufinfo, MP_BUFFER_WRITE);
if (n_args == 4) {
offset += mp_obj_get_int(args[3]);
}
// Read data to flash (adf4 API)
flash_read(&flash_desc, offset, bufinfo.buf, bufinfo.len);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(samd_flash_readblocks_obj, 3, 4, samd_flash_readblocks);
STATIC mp_obj_t samd_flash_writeblocks(size_t n_args, const mp_obj_t *args) {
uint32_t offset = (mp_obj_get_int(args[1]) * BLOCK_SIZE) + samd_flash_obj.flash_base;
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(args[2], &bufinfo, MP_BUFFER_READ);
if (n_args == 3) {
eraseblock(offset);
// TODO check return value
} else {
offset += mp_obj_get_int(args[3]);
}
// Write data to flash (adf4 API)
flash_write(&flash_desc, offset, bufinfo.buf, bufinfo.len);
// TODO check return value
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(samd_flash_writeblocks_obj, 3, 4, samd_flash_writeblocks);
STATIC mp_obj_t samd_flash_ioctl(mp_obj_t self_in, mp_obj_t cmd_in, mp_obj_t arg_in) {
samd_flash_obj_t *self = MP_OBJ_TO_PTR(self_in);
mp_int_t cmd = mp_obj_get_int(cmd_in);
switch (cmd) {
case MP_BLOCKDEV_IOCTL_INIT:
samd_flash_init();
return MP_OBJ_NEW_SMALL_INT(0);
case MP_BLOCKDEV_IOCTL_DEINIT:
return MP_OBJ_NEW_SMALL_INT(0);
case MP_BLOCKDEV_IOCTL_SYNC:
return MP_OBJ_NEW_SMALL_INT(0);
case MP_BLOCKDEV_IOCTL_BLOCK_COUNT:
return MP_OBJ_NEW_SMALL_INT(self->flash_size / BLOCK_SIZE);
case MP_BLOCKDEV_IOCTL_BLOCK_SIZE:
return MP_OBJ_NEW_SMALL_INT(BLOCK_SIZE);
case MP_BLOCKDEV_IOCTL_BLOCK_ERASE: {
eraseblock(mp_obj_get_int(arg_in) * BLOCK_SIZE + samd_flash_obj.flash_base);
// TODO check return value
return MP_OBJ_NEW_SMALL_INT(0);
}
default:
return mp_const_none;
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(samd_flash_ioctl_obj, samd_flash_ioctl);
STATIC const mp_rom_map_elem_t samd_flash_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_flash_version), MP_ROM_PTR(&samd_flash_version_obj) },
{ MP_ROM_QSTR(MP_QSTR_flash_size), MP_ROM_PTR(&samd_flash_size_obj) },
{ MP_ROM_QSTR(MP_QSTR_flash_init), MP_ROM_PTR(&samd_flash_init_obj) },
{ MP_ROM_QSTR(MP_QSTR_readblocks), MP_ROM_PTR(&samd_flash_readblocks_obj) },
{ MP_ROM_QSTR(MP_QSTR_writeblocks), MP_ROM_PTR(&samd_flash_writeblocks_obj) },
{ MP_ROM_QSTR(MP_QSTR_ioctl), MP_ROM_PTR(&samd_flash_ioctl_obj) },
};
STATIC MP_DEFINE_CONST_DICT(samd_flash_locals_dict, samd_flash_locals_dict_table);
MP_DEFINE_CONST_OBJ_TYPE(
samd_flash_type,
MP_QSTR_Flash,
MP_TYPE_FLAG_NONE,
make_new, samd_flash_make_new,
locals_dict, &samd_flash_locals_dict
);