Hi Mels,
L.S.!
On a Xilinx ZynqMP-based platform with u-boot running in Aarch64 mode in EL2, after booting a Linux kernel in EL1 using CONFIG_ARMV8_SWITCH_TO_EL1, Linux throws a warning that the CPUs have started in inconsistent modes ("CPU: CPUs started in inconsistent modes"). Indeed, only the first core on which U-boot was running is switched to EL1 at this point.
Is this a bug or a not completely supported feature in U-boot or can this warning actually be safely ignored under certain circumstances?
U-boot by design starts on Core0. Other cores are not touched and are managed (started/configured) by Linux.
The other question is if you use the ARM Trusted Firmware [ATF]. If you start/load it in U-Boot (or any earlier bootloader), then it also may change / configure CPUs state.
Kind regards,
Mels _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
Best regards,
Lukasz Majewski
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@denx.de