Hello,
I am trying to build a firmware for the nRF5340 on the Thingy91:x. The firmware should use the external flash for the secondary Image and is using the chained bootload setup with NSIB -> MCUboot -> App-Firmware.
Unfortunately my bootloader encounters a BUS FAULT:
D: stack 0x2005c1b0 for thread 0x200027e0: obj_size=20240 buf_start=0x2005c1b0 buf_size 20240 stack_ptr=0x200610c0 D: stack 0x2005c070 for thread 0x20002760: obj_size=320 buf_start=0x2005c070 buf_size 320 stack_ptr=0x2005c1b0 D: Event: LFCLK_STARTED D: lfclk: Clock started I: Function: nrfx_spim_init, error code: NRFX_SUCCESS. D: tx_bufs 0x20060fc8 - rx_bufs 0 - 1 D: current_tx 0x20060fd8 (1), current_rx 0 (0), tx buf/len 0x20060fc0/1, rx buf/len 0/0 I: Function: spim_xfer, error code: NRFX_SUCCESS. E: Timeout waiting for transfer complete E: Failed to stop instance with base address: 0x5000c000. I: Uninitialized. D: Transaction finished with status -116 E: Failed to exit DPD (-116) *** Booting My Application v2.1.0-dev-ae1ee57f3906 *** *** Using nRF Connect SDK v3.0.0-3bfc46578e42 *** *** Using Zephyr OS v4.0.99-a0e545cb437a *** D: scheduler unlocked (0x200027e0:0) I: Starting bootloader �W: Failed reading sectors; BOOT_MAX_IMG_SECTORS=2048 - too small? E: ***** BUS FAULT ***** E: Precise data bus error E: BFAR Address: 0x10fd08 E: r0/a1: 0x0010fd00 r1/a2: 0x00111120 r2/a3: 0x2001ad30 E: r3/a4: 0x00000020 r12/ip: 0x0000ba01 r14/lr: 0x00009a3d E: xpsr: 0x89000000 E: Faulting instruction address (r15/pc): 0x00011544 E: >>> ZEPHYR FATAL ERROR 25: Unknown error on CPU 0 E: Current thread: 0x200027e0 (unknown) E: Halting system
A minimal example is attached (build for thingy91x/nrf5340/cpuapp).
Increasing the CONFIG_BOOT_MAX_IMG_SECTORS=2048 even further did not change anything.
Can you tell me how to debug further?
Best Regards
Johannes
1663.app.zip