Re: Is kexec supported in QEMU for ARM64 (qemu-system-aarch64) with arm-trusted-firmware, optee, and u-boot.

[Philippe Mathieu-Daudé]

Cc'ing Ard too

On 9/27/19 12:35 AM, Lakshmi Ramasubramanian wrote:
> On 9/26/19 8:17 AM, Lakshmi Ramasubramanian wrote:
> 
> The following commit for ARM Trusted Firmware for QEMU virt ARMv8-A
> is almost 3 years old
> 
> https://salsa.debian.org/debian/atf-allwinner/commit/b6b671c4ac4bd5595306863225bb3bece1e6135c
> 
> 
> Current limitations:
> * Only cold boot is supported
> * No build instructions for QEMU_EFI.fd and rootfs-arm64.cpio.gz
> * No instructions for how to load a BL32 (Secure Payload)
> 
> So looks like only cold boot is supported (no kexec support)
> Is this correct?
> 
>> When I execute kexec ("kexec -l <kernel>", followed by "kexec -e") I
>> hit the following assert (in arm-trusted-firmware/plat/qemu/qemu_pm.c)
>>
>> /*******************************************************************************
>>
>>   * Platform handler called when a power domain is about to be turned
>>   * off. The target_state encodes the power state that each level should
>>   * transition to.
>> ******************************************************************************/
>>
>> void qemu_pwr_domain_off(const psci_power_state_t *target_state)
>> {
>>      assert(0);
>> }
>>
>> Is kexec supported in ARM64 QEMU (qemu-system-aarch64) -
>> using arm-trusted-firmware, optee, and u-boot?
>>
>> Thanks,
>>   -lakshmi
> 
>