Boot time for E51 and U54

[MarkAtMicrochip]

What should the expected boot time for a bare metal application? I have a customer who is seeing ~5s. Is it possible to get that under 1s? Thanks!

[rockoguido]

Hello Yes using mpfs_hal_ddr_demo have had the boot time for this demo with DDR training execute in under 200ms The bottleneck is typically DDR training and initialization Can share details if relevant Get Outlook for Android<https://aka.ms/AAb9ysg>

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________________________________ From: MarkAtMicrochip ***@***.***> Sent: Thursday, January 25, 2024 1:21:59 PM To: polarfire-soc/polarfire-soc-documentation ***@***.***> Cc: Subscribed ***@***.***> Subject: [PolarFire-SoC] Boot time for E51 and U54 (Discussion #397) EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe What should the expected boot time for a bare metal application? I have a customer who is seeing ~5s. Is it possible to get that under 1s? Thanks! — Reply to this email directly, view it on GitHub<#397>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AXJPF63YHR2ZQ6ZF3R3GX6TYQLEHPAVCNFSM6AAAAABCLGBPQOVHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZWGEZTGMRUGQ>. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[MarkAtMicrochip]

Yes, details are important. The customer I'm working with is booting from eNVM.

[rockoguido]

ok, the boot sequence. does it start with HSS booting the image from eNVM??
We were targeting mpfs_hal_ddr_demo which of course has a bootloader in it also, here was the sequence showing numbers before and after....

Baseline at 9400ms

enabled LIBERO_FAST_START - now at 3500ms
see mss_sw_config.h (under platform_config for the board being used)

removed DEBUG_DDR_INIT now at 2500ms
also in the same file referenced above
for HSS you will find this in the same file as above..

enabled SKIP_VERIFY_PATTERN_IN_CACHE now at 147ms
see mss_ddr.c, user needs to enable this, same file in HSS

So the net is the work we did for mpfs_hal_ddr_demo applies also to HSS, which makes sense since they share a lot of code.

If you have any questions feel free to ask

thx
Dave