Secure bootloader doesn't start

RE: Secure bootloader doesn't start

Anton K. — Thu, 04 Apr 2019 08:19:41 GMT

Thank you for your explanation

RE: Secure bootloader doesn't start

Vidar Berg — Thu, 04 Apr 2019 07:55:22 GMT

Hi,

In SDK 15.3.0, we started to use the MBR section to hold the bootloader start address and MBR param page address. The background for this change was that it's not possible to enable memory protection (BPROT/ACL) on the UICR section. Please see this answer from Sigurd for more details: https://devzone.nordicsemi.com/f/nordic-q-a/44872/bootloader-does-not-work-if-compiled-using-armgcc/176446#176446

RE: Secure bootloader doesn't start

Anton K. — Tue, 02 Apr 2019 14:54:48 GMT

Resolved. nRF5_SDK_15.3.0_59ac345/examples/dfu/secure_bootloader/pca10056_ble/armgcc/secure_bootloader_gcc_nrf52.ld has bootloader start address and mbr params page addressed on Softdevice memory????

uicr_bootloader_start_address (r) : ORIGIN = 0x00000FF8, LENGTH = 0x4

...

  uicr_mbr_params_page (r) : ORIGIN = 0x00000FFC, LENGTH = 0x4

I change it like it was on oldest SDK (some project with bootloader I had) by this way, and got success:

/*  uicr_bootloader_start_address (r) : ORIGIN = 0x00000FF8, LENGTH = 0x4 */
  uicr_bootloader_start_address (r) : ORIGIN = 0x10001014, LENGTH = 0x4
/*  uicr_mbr_params_page (r) : ORIGIN = 0x00000FFC, LENGTH = 0x4 */
  uicr_mbr_params_page (r) : ORIGIN = 0x10001018, LENGTH = 0x4

RE: Secure bootloader doesn't start

Anton K. — Tue, 02 Apr 2019 13:42:36 GMT

Also can't see any log information on RTT logger, he is enable, but where application after flashing I don't know. Trying to hard debug, but at first time after start pc seems at 0xfffffffe addr. I use Eclipse, so about hard debugging is hard for me say something good.