From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH defconfig v8] ARM: vf610m4: add defconfig for Linux on Vybrids Cortex-M4
Date: Wed, 20 May 2015 23:25:44 +0200 [thread overview]
Message-ID: <7545746.Jl1zbQvhrm@wuerfel> (raw)
In-Reply-To: <1432073182-27114-1-git-send-email-stefan@agner.ch>
On Wednesday 20 May 2015 00:06:22 Stefan Agner wrote:
> Add defconfig for Linux on Vybrid (vf610) on the secondary Cortex-
> M4 CPU. The use of a XIP image has been tested which needs to be
> loaded (e.g. using the custom m4boot loader) to the end of the
> available RAM at address 0x8f000000. The Cortex-M4 has a code-alias
> which makes sure that the instructions get fetched through the code
> bus (alias starts at 0x00800000 => 0x80800000 in system address).
> Hence, to get optimal performance, use 0x0f000000 as XIP_PHYS_ADDR.
> This address is additionally shifted by the length of the minimal
> loader which is inserted by m4boot. Currently, this offset is 0x80.
>
> The standard DRAM base address is configured to 0x8C000000, which
> gives the Cortex-M4 48MiB of RAM.
>
> Signed-off-by: Stefan Agner <stefan@agner.ch>
>
Applied to next/defconfig, thanks!
Arnd
prev parent reply other threads:[~2015-05-20 21:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-19 22:06 [PATCH defconfig v8] ARM: vf610m4: add defconfig for Linux on Vybrids Cortex-M4 Stefan Agner
2015-05-20 21:25 ` Arnd Bergmann [this message]
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