Outline ![]()
Files ![]()
loading...
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
189
190
191
192
193
194
195
196
197
// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
* Copyright (C) 2019 Icenowy Zheng <icenowy@aosc.io> *
* Copyright (C) 2019 Caleb Szalacinski <contact@skiboy.net> *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "imp.h"
#include <target/image.h>
#define SWM050_DELAY 100
#define SWM050_FLASH_PAGE_SIZE 0x200
#define SWM050_FLASH_PAGES 16
#define SWM050_CPU_ID 0xE000ED00
#define SWM050_CPU_ID_VAL 0x410CC200
#define SWM050_FLASH_REG1 0x1F000000
#define SWM050_FLASH_REG2 0x1F000038
#define SWM050_FLASH_KEY 0xAAAAAAAA
#define SWM050_SYSCTL_CFG_0 0x400F0000
#define SWM050_SYSCTL_DBLF 0x400F0008
static int swm050_erase(struct flash_bank *bank, unsigned int first,
unsigned int last)
{
struct target *target = bank->target;
int retval;
if (target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
/* Perform erase */
retval = target_write_u32(target, SWM050_FLASH_REG1, 0x4);
if (retval != ERROR_OK)
return retval;
for (unsigned int curr_page = first; curr_page <= last; curr_page++) {
uint32_t curr_addr = bank->base + (SWM050_FLASH_PAGE_SIZE * curr_page);
/* Perform write */
retval = target_write_u32(target, curr_addr, SWM050_FLASH_KEY);
if (retval != ERROR_OK)
return retval;
alive_sleep(SWM050_DELAY);
}
/* Close flash interface */
retval = target_write_u32(target, SWM050_FLASH_REG1, 0x0);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
static int swm050_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t offset, uint32_t count)
{
struct target *target = bank->target;
int retval;
if (target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
retval = ERROR_TARGET_NOT_HALTED;
return retval;
}
/* Perform write */
retval = target_write_u32(target, SWM050_FLASH_REG1, 0x1);
if (retval != ERROR_OK)
return retval;
retval = target_write_memory(target, bank->base + offset, 4, count/4, buffer);
if (retval != ERROR_OK)
return retval;
/* Close flash interface */
retval = target_write_u32(target, SWM050_FLASH_REG1, 0x0);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
static int swm050_probe(struct flash_bank *bank)
{
return ERROR_OK;
}
static int swm050_mass_erase(struct flash_bank *bank)
{
struct target *target = bank->target;
int retval;
if (target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
/* Perform mass erase */
retval = target_write_u32(target, SWM050_FLASH_REG1, 0x6);
if (retval != ERROR_OK)
return retval;
retval = target_write_u32(target, SWM050_FLASH_REG2, 0x1);
if (retval != ERROR_OK)
return retval;
retval = target_write_u32(target, 0x0, SWM050_FLASH_KEY);
if (retval != ERROR_OK)
return retval;
alive_sleep(SWM050_DELAY);
/* Close flash interface */
retval = target_write_u32(target, SWM050_FLASH_REG1, 0x0);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
COMMAND_HANDLER(swm050_handle_mass_erase_command)
{
if (CMD_ARGC < 1)
return ERROR_COMMAND_SYNTAX_ERROR;
struct flash_bank *bank;
int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
if (retval != ERROR_OK)
return retval;
retval = swm050_mass_erase(bank);
if (retval == ERROR_OK)
command_print(CMD, "swm050 mass erase complete");
else
command_print(CMD, "swm050 mass erase failed");
return retval;
}
FLASH_BANK_COMMAND_HANDLER(swm050_flash_bank_command)
{
free(bank->sectors);
bank->write_start_alignment = 4;
bank->write_end_alignment = 4;
bank->size = SWM050_FLASH_PAGE_SIZE * SWM050_FLASH_PAGES;
bank->num_sectors = SWM050_FLASH_PAGES;
bank->sectors = alloc_block_array(0, SWM050_FLASH_PAGE_SIZE, SWM050_FLASH_PAGES);
if (!bank->sectors)
return ERROR_FAIL;
for (unsigned int i = 0; i < bank->num_sectors; i++)
bank->sectors[i].is_protected = 0;
return ERROR_OK;
}
static const struct command_registration swm050_exec_command_handlers[] = {
{
.name = "mass_erase",
.handler = swm050_handle_mass_erase_command,
.mode = COMMAND_EXEC,
.usage = "bank_id",
.help = "Erase entire flash device.",
},
COMMAND_REGISTRATION_DONE
};
static const struct command_registration swm050_command_handlers[] = {
{
.name = "swm050",
.mode = COMMAND_ANY,
.help = "swm050 flash command group",
.usage = "",
.chain = swm050_exec_command_handlers,
},
COMMAND_REGISTRATION_DONE
};
const struct flash_driver swm050_flash = {
.name = "swm050",
.commands = swm050_command_handlers,
.flash_bank_command = swm050_flash_bank_command,
.erase = swm050_erase,
.write = swm050_write,
.read = default_flash_read,
.probe = swm050_probe,
.auto_probe = swm050_probe,
.erase_check = default_flash_blank_check,
.free_driver_priv = default_flash_free_driver_priv,
};
Details ![]()
Show: from Types: Columns: ![]( "Show Project Names")
![]( "Show Locations")
![]( "Show Referring Symbols")
![]( "Show Scope")
Click anywhere in the source to view detailed information here...