Hello,
We are using NCS SDK 2.4.2. We use MCUBoot for appcore and b0n for netcore. We use https://github.com/zephyrproject-rtos/zephyr/tree/main/samples/bluetooth/hci_ipc sample for our netcore. Since MCUBoot and Secure Boot is enabled for app core, It includes b0n ( netboot sample ) for netcore.
Our manufacturing partner doesn't use MCUBoot or b0n. We want to run their image in our net core for some testing.
Flash layout of netcore.
0x1000000 - b0n / netboot - generated by us
0x1008580 - provision.hex - generated by us
0x1008800 - blinky sample - generated by manufacturing partner
1. Is it possible to modify blinky sample so that it can be loaded by b0n, even though it's not build with it ?
2. I changed few project config to so that linker.cmd is generated in a way that blinky zephyr.hex is at 0x1008800. But net core is continuously rebooting, I get b0n logs, but no logs from blinky sample.
CONFIG_FLASH_BASE_ADDRESS=0x1008800
first few lines of generated linker.cmd
MEMORY
{
FLASH (rx) : ORIGIN = (0x1000000 + 0x8800), LENGTH = (256*1K - 0x8800)
RAM (wx) : ORIGIN = 0x21000000, LENGTH = (64 * 1K)
SRAM1 : ORIGIN = 553648128, LENGTH = 65536
IDT_LIST (wx) : ORIGIN = 0xFFFFF7FF, LENGTH = 2K
}
3. Is there any other way to address this situation ?
For now, ignoring complexity of image signature and keys sharing. It look like b0n isn't verifying any signature in this version.
Thanks,
Darshan
