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Re: eMMC support

From: Cédric Le Goater
Subject: Re: eMMC support
Date: Wed, 10 Feb 2021 10:56:48 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0

Hello Sai Pavan,

[ ... ] 

>>> The patchset is in the aspeed-6.0 branch :
>>>     df91d012672c Cédric Le Goater - hw/arm/aspeed: Load eMMC first boot
>>>                                     area as a boot rom
>>>     27b75a7ad322 Cédric Le Goater - hw/arm/aspeed: Add eMMC property
>>>     2836cf5a15a1 Joel Stanley - hw/arm/aspeed: Set boot device to emmc
> [Sai Pavan Boddu] I see you guys have implemented the boot area access here,

The boot partition modeling fits our needs to boot the Aspeed machine 
but this is very custom. 

> I was assuming, your use-case just need to access data from boot partitions.
> We are not implementing eMMC boot operations or Alternative bootmode right ?

Joel could say more about it ? 

> And also is it good to calculate the address offset once when partition 
> access bits are set, rather than doing it for every read/write ?

Yes and no. It would add state to the sd object.



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