Commit 56c15e7c authored Oct 29, 2020 by Andrzej Puzdrowski

zephyr: added ISB after cortex control was set



After modifying the CONTROL register, ISB function should be
used to ensure the effect of the change applies to
subsequent code.
Due to the simple nature of the Cortex-M3, Cortex-M4, Cortex-M0+,
Cortex-M0, and Cortex-M1 pipeline,
omission of the ISB instruction does not cause any problem.
But might cause problem on a more advanced core.

Signed-off-by: Andrzej Puzdrowski <andrzej.puzdrowski@nordicsemi.no>

parent ce115975

boot/zephyr/main.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -182,6 +182,7 @@ static void do_boot(struct boot_rsp *rsp)
		__set_MSP(vt->msp);
		#if CONFIG_MCUBOOT_CLEANUP_ARM_CORE
		__set_CONTROL(0x00); /* application will configures core on its own */
		__ISB();
		#endif
		((void (*)(void))vt->reset)();
		}

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