blob: 9a12add659a00af10bc62b48b5042b62f834f73e (
plain) (
blame)
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
|
/*
* Copyright © 2013 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "ao.h"
#include <ao_exti.h>
#include <ao_boot.h>
#include <ao_flash.h>
#include <ao_flash_task.h>
void
ao_panic(uint8_t reason)
{
(void) reason;
}
void
ao_put_string(__code char *s)
{
char c;
while ((c = *s++)) {
if (c == '\n')
ao_usb_putchar('\r');
ao_usb_putchar(c);
}
}
static void
ao_application(void)
{
ao_boot_reboot(AO_BOOT_APPLICATION_BASE);
}
static uint32_t
ao_get_hex32(void)
{
int8_t n;
uint32_t v = 0;
for (;;) {
n = ao_usb_getchar();
if (n != ' ')
break;
}
for(;;) {
if ('0' <= n && n <= '9')
n = n - '0';
else if ('a' <= n && n <= 'f')
n = n - ('a' - 10);
else if ('A' <= n && n <= 'F')
n = n - ('A' - 10);
else
break;
v = (v << 4) | n;
n = ao_usb_getchar();
}
return v;
}
static void
ao_block_erase(void)
{
uint32_t addr = ao_get_hex32();
void *p = (void *) addr;
ao_flash_erase_page(p);
}
static int
ao_block_valid_address(uint32_t addr)
{
if ((uint32_t) AO_BOOT_APPLICATION_BASE <= addr && addr <= (uint32_t) AO_BOOT_APPLICATION_BOUND - 256)
return 1;
return 0;
}
static void
ao_block_write(void)
{
uint32_t addr = ao_get_hex32();
void *p = (void *) addr;
uint8_t data[256];
uint16_t i;
for (i = 0; i < 256; i++)
data[i] = ao_usb_getchar();
if (!ao_block_valid_address(addr))
return;
ao_flash_page(p, (void *) data);
}
static void
ao_block_read(void)
{
uint32_t addr = ao_get_hex32();
uint8_t *p = (uint8_t *) addr;
uint16_t i;
uint8_t c;
if (!ao_block_valid_address(addr)) {
for (i = 0; i < 256; i++)
ao_usb_putchar(0xff);
return;
}
for (i = 0; i < 256; i++) {
c = *p++;
ao_usb_putchar(c);
}
}
static inline void
hexchar(uint8_t c)
{
if (c > 10)
c += 'a' - ('9' + 1);
ao_usb_putchar(c + '0');
}
static void
ao_put_hex(uint32_t u)
{
int8_t i;
for (i = 28; i >= 0; i -= 4)
hexchar((u >> i) & 0xf);
}
static void
ao_show_version(void)
{
ao_put_string("altos-loader");
ao_put_string("\nmanufacturer "); ao_put_string(ao_manufacturer);
ao_put_string("\nproduct "); ao_put_string(ao_product);
ao_put_string("\nflash-range ");
ao_put_hex((uint32_t) AO_BOOT_APPLICATION_BASE);
ao_usb_putchar(' ');
ao_put_hex((uint32_t) AO_BOOT_APPLICATION_BOUND);
ao_put_string("\nsoftware-version "); ao_put_string(ao_version);
ao_put_string("\n");
}
void
ao_flash_task(void) {
for (;;) {
ao_usb_flush();
switch (ao_usb_getchar()) {
case 'v': ao_show_version(); break;
case 'a': ao_application(); break;
case 'X': ao_block_erase(); break;
case 'W': ao_block_write(); break;
case 'R': ao_block_read(); break;
}
}
}
|
