From: Stephen Warren <swarren@wwwdotorg.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 3/3] ARM: tegra: Disable SPL and non-cached memory on 64-bit
Date: Tue, 28 Jul 2015 09:44:27 -0600 [thread overview]
Message-ID: <55B7A35B.6000509@wwwdotorg.org> (raw)
In-Reply-To: <CAPnjgZ1CSFoxcrzuQ8sHhyEfkTQNoRGhZ+H7ns0adyJf0_w9Bw@mail.gmail.com>
On 07/28/2015 09:33 AM, Simon Glass wrote:
> Hi,
>
> On 27 July 2015 at 11:45, Stephen Warren <swarren@wwwdotorg.org> wrote:
>> From: Thierry Reding <treding@nvidia.com>
>>
>> For 64-bit ARM SoCs we rely on non-U-Boot code to bring up the CPU in
>> AArch64 mode so that we don't need the SPL. Non-cached memory is not
>> implemented (yet) for 64-bit ARM.
>>
>> Signed-off-by: Thierry Reding <treding@nvidia.com>
>> Signed-off-by: Tom Warren <twarren@nvidia.com>
>> Signed-off-by: Stephen Warren <swarren@nvidia.com>
>> ---
>> include/configs/tegra-common.h | 4 ++++
>> 1 file changed, 4 insertions(+)
>
> What does start up the CPU? Is this something that will be implemented
> in SPL later?
At least initially, the plan is to use a separate bootloader on the boot
CPU (was named AVP, but got renamed to BPMP lite in Tegra210). It's
vaguely possible that U-Boot SPL support will exist in the future, but
I'm not sure.
next prev parent reply other threads:[~2015-07-28 15:44 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-27 17:45 [U-Boot] [PATCH 1/3] ARM: tegra: Restrict usable RAM to 32-bit on 64-bit SoCs Stephen Warren
2015-07-27 17:45 ` [U-Boot] [PATCH 2/3] ARM: tegra: Use standard cache enable for 64-bit Stephen Warren
2015-07-28 15:33 ` Simon Glass
2015-07-28 15:42 ` Stephen Warren
2015-07-27 17:45 ` [U-Boot] [PATCH 3/3] ARM: tegra: Disable SPL and non-cached memory on 64-bit Stephen Warren
2015-07-28 15:33 ` Simon Glass
2015-07-28 15:44 ` Stephen Warren [this message]
2015-07-28 15:50 ` Simon Glass
2015-07-28 16:05 ` Stephen Warren
2015-07-28 16:12 ` Simon Glass
2015-07-28 15:33 ` [U-Boot] [PATCH 1/3] ARM: tegra: Restrict usable RAM to 32-bit on 64-bit SoCs Simon Glass
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