blob: cdf177ac60697d4608a510f97a4f024aead04e9b (
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
|
#include <nuttx/config.h>
#include "app_config.h"
#include <stdint.h>
#include <stdlib.h>
#include <nuttx/progmem.h>
#include "chip.h"
#include "stm32.h"
#include "flash.h"
flash_error_t bl_flash_erase(void)
{
/*
* FIXME (?): this may take a long time, and while flash is being erased it
* might not be possible to execute interrupts, send NodeStatus messages etc.
* We can pass a per page callback or yeild */
flash_error_t status = FLASH_ERROR_AFU;
ssize_t bllastpage = up_progmem_getpage(APPLICATION_LOAD_ADDRESS - 1);
if (bllastpage >= 0)
{
status = FLASH_ERROR_SUICIDE;
ssize_t appfirstpage = up_progmem_getpage(APPLICATION_LOAD_ADDRESS);
if (appfirstpage > bllastpage)
{
size_t pagecnt = up_progmem_npages() - (bllastpage + 1);
/* Erase the whole application flash region */
status = FLASH_OK;
while (status == FLASH_OK && pagecnt--)
{
ssize_t ps = up_progmem_erasepage(appfirstpage);
if (ps <= 0)
{
status = FLASH_ERASE_ERROR;
}
}
}
}
return status;
}
flash_error_t bl_flash_write_word(uint32_t flash_address, const uint8_t data[4])
{
flash_error_t status = FLASH_ERROR;
if (flash_address >= APPLICATION_LOAD_ADDRESS &&
(flash_address + sizeof(data)) <= (uint32_t) APPLICATION_LAST_32BIT_ADDRRESS)
{
if (sizeof(data) ==
up_progmem_write((size_t) flash_address, (void *)data, sizeof(data)))
{
status = FLASH_OK;
}
}
return status;
}
|
