[U-Boot] [PATCH v5 01/14] sun7i: Remove duplicate call to psci_arch_init

[Jan Kiszka]

Am 2015-03-12 um 13:28 schrieb Tom Rini:
> On Thu, Mar 12, 2015 at 08:34:34AM +0100, Jan Kiszka wrote:
>> Am 2015-03-11 um 16:11 schrieb Tom Rini:
>>> On Mon, Mar 09, 2015 at 08:00:11AM +0100, Jan Kiszka wrote:
>>>
>>>> This is already invoked a few cycles later in monitor mode by
>>>> _secure_monitor. Drop it here, it serves no purpose.
>>>
>>> For clarity, because of the vector tables?
>>
>> Sorry, didn't get the question yet. Are you asking why it was added
>> initially (that would be a question for Marc) or why it serves no
>> purpose now?
> 
> You're saying we can drop the call to that function from where it was
> because it's called a few cycles later.  In mainline we would only (as
> far as I can see) call the function because the CPU went to the vector
> table and called it that way.
> 
> Or rather, I'm unclear as to how the function would be called a few
> cycles later, can you please expand the commit message to make it
> clearer?  Thanks!

Yeah, the call chain continues like this: _sunxi_cpu_entry calls
_do_nonsec_entry which which triggers via smc #0 _secure_monitor, and
there we have the second invocation. There is no alternative path. Better?

Jan

-- 
Siemens AG, Corporate Technology, CT RTC ITP SES-DE
Corporate Competence Center Embedded Linux