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From: Marek Vasut <marex@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] Making U-Boot smaller
Date: Tue, 21 May 2019 21:31:50 +0200	[thread overview]
Message-ID: <281226fb-9e96-2f3c-b227-7a58039a96c3@denx.de> (raw)
In-Reply-To: <CAPnjgZ1R77dpHUJ-EpwpGM2iCfDWVb8Q=Ce8xy37kytELFO+TA@mail.gmail.com>

On 5/21/19 6:43 PM, Simon Glass wrote:
> Hi,
> 
> (moved from thread "U-Boot PXA support")
> 
> We have of-platdata, which produces C data from the DT, for linking
> into U-Boot. It saves libfdt and DT space. But we still have the DM
> overhead.
> 
> We have binman which can insert values into the binary after
> link-time. This is barely used at present, only for accessing the
> location of things in flash.
> 
> Another thing is that every little tweak and feature adds a few bytes
> and there are dozens of them in each release. It would be interesting
> to build a board from 10 years ago (like PXA) and see where the growth
> is. My bet is that we could add Kconfig options to disable extra
> features (and enhancements of features) and make quite a difference.
> 
> For DM, I think it would be interesting to revisit and compare against
> the initial release, and see if some features could be made optional
> in SPL.
> 
> Finally I feel we could implement a single-device API for where
> CONFIG_SPL_DM is not set. We could use the debug UART for serial, a
> single instance of tiny MMC for MMC, etc.

If it's a single-instance, then maybe we can somehow compile-out or
short-circuit the DM altogether ?

-- 
Best regards,
Marek Vasut

      parent reply	other threads:[~2019-05-21 19:31 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-21 16:43 [U-Boot] Making U-Boot smaller Simon Glass
2019-05-21 16:56 ` Jagan Teki
2019-05-21 19:32   ` Marek Vasut
2019-05-21 19:53     ` Tom Rini
2019-05-21 19:54       ` Marek Vasut
2019-05-21 19:59         ` Tom Rini
2019-05-21 20:01           ` Marek Vasut
2019-05-21 20:10             ` Tom Rini
2019-05-21 20:13               ` Marek Vasut
2019-05-22 14:15                 ` Eugeniu Rosca
2019-05-22 15:09                   ` Tom Rini
2019-05-22 16:50                     ` Eugeniu Rosca
2019-05-22 18:50                       ` Tom Rini
2019-05-24 19:59                         ` Eugeniu Rosca
2019-05-21 19:31 ` Marek Vasut [this message]

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