On 17/02/2025 15:16, Heiko Stübner wrote:
> Hi Steven,
>
> Am Montag, 17. Februar 2025, 15:47:21 MEZ schrieb Steven Price:
>> On 05/02/2025 06:15, Shawn Lin wrote:
>>> Inform firmware to keep the power domain on or off.
>>>
>>> Suggested-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
>>> Signed-off-by: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
>>> ---
>>
>> This patch is causing my Firefly RK3288 to fail to boot, it hangs
>> shortly after reaching user space, but the bootup messages include the
>> suspicious line "Bad mode in prefetch abort handler detected".
>> I suspect the firmware on this board doesn't support this new SMC
>> correctly. Reverting this patch on top of linux-next gets everything
>> working again.
>
> Is your board actually running some trusted firmware?
Not as far as I know.
> Stock rk3288 never had tf-a / psci [0], I did work on that for a while,
> but don't think that ever took off.
>
> I'm wondering who the smcc call is calling, but don't know about
> about smcc stuff.
Good question - it's quite possible things are blowing up just because
there's nothing there to handle the SMC. My DTB is as upstream:
cpus {
#address-cells = <0x01>;
#size-cells = <0x00>;
enable-method = "rockchip,rk3066-smp";
rockchip,pmu = <0x06>;
I haven't investigated why this code is attempting to call an SMC on
this board.
Steve
> [0] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/rockchip/rk3288.dtsi#n63
>
>
