From: Alexander Graf <agraf@csgraf.de>
To: Tom Rini <trini@konsulko.com>, Jagan Teki <jagan@amarulasolutions.com>
Cc: linux-rockchip@lists.infradead.org,
Heinrich Schuchardt <xypron.glpk@gmx.de>,
u-boot@lists.denx.de,
linux-amarula <linux-amarula@amarulasolutions.com>
Subject: Re: [PATCH 02/11] distro_bootcmd: Add SF support
Date: Mon, 20 Jan 2020 18:40:39 +0100 [thread overview]
Message-ID: <8dddd74f-7b17-a614-48ab-aea0bc9148db@csgraf.de> (raw)
In-Reply-To: <20200120172240.GX8732@bill-the-cat>
On 20.01.20 18:22, Tom Rini wrote:
> +A few people that may have insight to my question
>
> On Sat, Dec 21, 2019 at 01:24:31PM +0530, Jagan Teki wrote:
>
>> Add distro boot command support for SPI flash.
>>
>> This distro boot will read the boot script at specific
>> location at the flash and start sourcing the same.
>>
>> The common macro like BOOTENV_SHARED_FLASH would help
>> to extend the support for nand flash in future.
>>
>> Cc: Tom Rini <trini@konsulko.com>
>> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> What distro is this for? My concern here is that hundreds of boards
> (literally) grow by a few hundred bytes to add in this bit of additional
> default logic. That's not a big problem if distributions are now going
> to be using SPI flash as where they're programming in their bootscript.
> But, who is doing that? Thanks!
I am not aware of any "distro" that puts a U-Boot script at offset 0 of
the SPI Flash.
Traditionally, SPI Flash boot setups were always very hand crafted -
exactly the opposite of what distro boot is for. That said, I think
supporting SPI Flash boot for rk3399 is great! Albeit I would personally
only store U-Boot and the environment on SPI, not the target OS.
Jagan, is putting a U-Boot script on the SPI Flash something you thought
of or something that the rk3399 reference board already does? If it's
the latter, maybe you could add it as a board custom boot function?
Alex
next prev parent reply other threads:[~2020-01-20 17:40 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-21 7:54 [PATCH 00/11] rk3399: SPI boot support (fixes, updates) Jagan Teki
[not found] ` <20191221075440.6944-1-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
2019-12-21 7:54 ` [PATCH 01/11] spi: rk: Limit transfers to (64K - 1) bytes Jagan Teki
[not found] ` <20191221075440.6944-2-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
2019-12-23 2:30 ` Kever Yang
2019-12-27 5:55 ` Jagan Teki
2019-12-21 7:54 ` [PATCH 02/11] distro_bootcmd: Add SF support Jagan Teki
2019-12-30 3:07 ` Kever Yang
2020-01-20 17:22 ` Tom Rini
2020-01-20 17:40 ` Alexander Graf [this message]
2020-01-23 16:55 ` Jagan Teki
2020-01-23 17:03 ` Tom Rini
2020-01-23 17:11 ` Jagan Teki
2020-01-23 17:15 ` Tom Rini
2020-01-23 17:29 ` Jagan Teki
2020-01-23 17:59 ` Tom Rini
2019-12-21 7:54 ` [PATCH 03/11] rockchip: Include SF on distrocmd devices Jagan Teki
[not found] ` <20191221075440.6944-4-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
2019-12-30 3:07 ` Kever Yang
2020-01-07 8:44 ` Kever Yang
2019-12-21 7:54 ` [PATCH 04/11] rk3399: Add boot flash script offet, size Jagan Teki
2019-12-30 3:06 ` Kever Yang
2019-12-21 7:54 ` [PATCH 05/11] rk3399: Check MMC env while defining it Jagan Teki
2019-12-30 3:06 ` Kever Yang
2019-12-21 7:54 ` [PATCH 06/11] env: kconfig: Restrict rockchip env for MMC Jagan Teki
2019-12-30 3:05 ` Kever Yang
2019-12-21 7:54 ` [PATCH 07/11] env: Enable SPI flash env for rockchip Jagan Teki
2019-12-23 2:34 ` Kever Yang
2019-12-27 6:50 ` Jagan Teki
2019-12-27 10:02 ` Kever Yang
2019-12-27 10:10 ` Jagan Teki
2019-12-27 10:30 ` Soeren Moch
2019-12-27 12:04 ` Jagan Teki
2019-12-27 13:19 ` Soeren Moch
[not found] ` <30fdf54b-0f71-ffbf-ac57-51050a29b56d-S0/GAf8tV78@public.gmane.org>
2019-12-28 12:08 ` Jagan Teki
2019-12-30 9:04 ` Soeren Moch
2019-12-30 2:59 ` Kever Yang
2019-12-21 7:54 ` [PATCH 08/11] rockchip: dts: Sync ROC-RK3399-PC changes from Linux Jagan Teki
[not found] ` <20191221075440.6944-9-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
2019-12-30 3:00 ` Kever Yang
2019-12-21 7:54 ` [PATCH 09/11] roc-pc-rk3399: Enable SPI Flash Jagan Teki
[not found] ` <20191221075440.6944-10-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
2019-12-30 3:00 ` Kever Yang
2019-12-21 7:54 ` [PATCH 10/11] rockpro-rk3399: " Jagan Teki
2019-12-30 3:00 ` Kever Yang
[not found] ` <20191221075440.6944-11-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
2019-12-30 11:51 ` Emmanuel Vadot
2020-01-08 12:59 ` Jagan Teki
2019-12-21 7:54 ` [PATCH 11/11] roc-rk3399-pc: Add SPI boot support Jagan Teki
2019-12-30 3:05 ` Kever Yang
2019-12-30 7:52 ` Jagan Teki
[not found] ` <CAMty3ZA1u3-21QN4N6W=9Sq3n493BBBB2W_FzAEQC9aze4SoMg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2020-01-07 8:53 ` Kever Yang
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