From: Patrick Wildt <patrick@blueri.se>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 2/2] rockchip: px30: enable spl-fifo-mode for both emmc and sdmmc on evb
Date: Thu, 28 Nov 2019 00:38:45 +0100 [thread overview]
Message-ID: <20191127233845.GA19402@nox.fritz.box> (raw)
In-Reply-To: <20191119110402.17876-2-heiko@sntech.de>
On Tue, Nov 19, 2019 at 12:04:02PM +0100, Heiko Stuebner wrote:
> From: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
>
> As part of loading trustedfirmware, the SPL is required to place portions
> of code into the socs sram but the mmc controllers can only do dma
> transfers into the regular memory, not sram.
>
> The results of this are not directly visible in u-boot itself, but
> manifest as security-relate cpu aborts during boot of for example Linux.
>
> There were a number of attempts to solve this elegantly but so far
> discussion is still ongoing, so to make the board at least boot correctly
> put both mmc controllers into fifo-mode, which also circumvents the
> issue for now.
>
> Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Hi,
is this also needed on RK3399 based machines? I have a NanoPC-T4,
where the eMMC is on the Arasan controller and the SD card on the
dwmmc. So if I boot from SD card I need this as well?
Patrick
next prev parent reply other threads:[~2019-11-27 23:38 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-19 11:04 [U-Boot] [PATCH v2 1/2] rockchip: dwmmc: add handling for u-boot, spl-fifo-mode Heiko Stuebner
2019-11-19 11:04 ` [U-Boot] [PATCH v2 2/2] rockchip: px30: enable spl-fifo-mode for both emmc and sdmmc on evb Heiko Stuebner
2019-11-20 7:20 ` Kever Yang
2019-11-20 11:11 ` Philipp Tomsich
2019-11-27 23:38 ` Patrick Wildt [this message]
2019-11-28 8:19 ` Heiko Stübner
2019-11-20 7:19 ` [U-Boot] [PATCH v2 1/2] rockchip: dwmmc: add handling for u-boot, spl-fifo-mode Kever Yang
2019-11-20 11:09 ` Philipp Tomsich
2019-11-20 11:10 ` Philipp Tomsich
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191127233845.GA19402@nox.fritz.box \
--to=patrick@blueri.se \
--cc=u-boot@lists.denx.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox