i.MX Processorsのトピックfast boot clarifications

fast boot clarifications

dav1 — Tue, 17 Dec 2019 23:09:42 GMT

been reading a bit in the hw ref on how to configure fastboot (in my case, i.mx8 mini + eMMC only, no separate spi flash)

anyone that can help clarify

- what exactly is the difference between "normal" emmc boot vs "fast boot"?

- any relative number in terms of the diff in speed between the two?

Re: fast boot clarifications

igorpadykov — Wed, 18 Dec 2019 05:32:49 GMT

Hi dav1

for differencies one can check sect.10.3.3.9 MMC fast boot

i.MX 8M Mini Applications Processor Reference Manual

Unfortunately I am not aware of fast boot times.

Best regards
igor
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Re: fast boot clarifications

dav1 — Sat, 21 Dec 2019 17:31:01 GMT

Thanks Igor,

I've read the TRM section, no real details on the benefit of fast boot, other than the fact that it's called "fast" :-)

Since there is a bit of work to prepare for "fast-boot", I was curious to know if anyone had an idea of how much time is saved by this method.

ps. I like 'uuu' and seems it's not supported as fastboot needs some hard offsets. Any plans to change this?

Re: fast boot clarifications

igorpadykov — Sun, 22 Dec 2019 09:14:56 GMT

Hi dav1

more detailed explanation can be found in i.MX6DQ Reference Manual (eMMC boot)

[U-Boot] eMMC boot partition support in uboot

Intel Stratix 10 Hard Processor System Technical Reference Manual

[Resolved] eMMC boot (boot partition) - Processors forum - Processors - TI E2E support forums

Best regards
igor