Hi Simon,
On 09/08/2017 08:17 PM, Simon Glass wrote:
Hi Kever,
On 8 September 2017 at 01:34, Dr. Philipp Tomsich
<philipp.toms...@theobroma-systems.com> wrote:
On 8 Sep 2017, at 04:46, Kever Yang <kever.y...@rock-chips.com> wrote:
Philipp,
We already enable CONFIG_SPL_OF_CONTROL for all rk3399 board, right?
I meant “full OF_CONTROL” as opposed to “OF_PLATDATA” (which is dependent
of OF_CONTROL, but is intended as a stopgap measure).
For OF_PLATDATA, I would prefer there always have a option to use for
speed up the boot time, not only for ram size.
I had discussed that with Simon recently and he views OF_PLATDATA as a last
resort to be used, when there is not enough memory for full OF_CONTROL.
Can you use bootstage to measure the boot time impact?
I think I have do the statistics before with the timer instead of bootstage.
And here is the result I got with bootstage(with little change in spl to
move
secure_timer_init() before spl_early_init()):
The mark of end_spl:
With of-pladata:
205952 205864 205857
without of-platdata:
279520 279495 279508
The difference is about 75ms.
BTW:
bug1: there is no timer_get_boot_us() in armv8,
bug2: there is something wrong with "dm_spl", it use bootstage_start() +
bootstage_accum()
instead of bootstage_mark_name(), the "board_init_f" will
replace it, maybe some tag is
not correct.
Thanks,
- Kever
Regards,
Simon
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