sys64738
/
blackmagic
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

dfucore.c: Announce no writable bootloader pages when device is read proteced 

or bootloader is write protected.

Device read protection or write protection on first 4 bootloader pages
can only be removed by mass erase. Triggering mass erase with a program
running from flash is doomed for failure.
User can force bootloader update, at their own risk to brick the device.
This commit is contained in:
Uwe Bonnes 2017-04-28 20:18:20 +02:00
parent b09a522f37
commit b7235da97f
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
src/platforms/stm32/dfucore.c
View File

@ -124,12 +124,13 @@ static const char *usb_strings[] = {
if_string,
};
static char upd_if_string[] = UPD_IFACE_STRING;
static const char *usb_strings_upd[] = {
"Black Sphere Technologies",
BOARD_IDENT_UPD,
serial_no,
/* This string is used by ST Microelectronics' DfuSe utility */
UPD_IFACE_STRING,
upd_if_string,
};
static uint32_t get_le32(const void *vp)
@ -355,6 +356,12 @@ static char *get_dev_unique_id(char *s)
if (fuse_flash_size == 0x40) /* Handle F103x8 as F103xC! */
fuse_flash_size = 0x80;
max_address = FLASH_BASE + (fuse_flash_size << 10);
/* If bootloader pages are write protected or device is read
* protected, deny bootloader update.
* User can still force updates, at his own risk!
*/
if (((FLASH_WRPR & 0x03) != 0x03) || (FLASH_OBR & FLASH_OBR_RDPRT_EN))
upd_if_string[30] = '0';
/* Fetch serial number from chip's unique ID */
for(i = 0; i < 8; i++) {
s[7-i] = ((unique_id >> (4*i)) & 0xF) + '0';