From: ben.dooks@codethink.co.uk (Ben Dooks)
To: linux-arm-kernel@lists.infradead.org
Subject: [linux-sunxi] [PATCH V3: Add Smp support for Allwinner A20. 1/3] Add smp support for Allwinner A20(sunxi 7i).
Date: Thu, 26 Sep 2013 18:03:47 +0100 [thread overview]
Message-ID: <524468F3.5090400@codethink.co.uk> (raw)
In-Reply-To: <1379861045.30708.22.camel@dagon.hellion.org.uk>
On 22/09/13 15:44, Ian Campbell wrote:
> On Sun, 2013-09-22 at 20:21 +0800, Fan Rong wrote:
>
>> + /* Set boot addr */
>> + paddr = virt_to_phys(sun7i_secondary_startup);
>> + writel(paddr, sunxi7i_cc_base + SUN7I_CPUCFG_BOOTADDR);
>
> This means that the secondary cores will miss out on any setup which the
> bootloader might have done for the primary CPU, e.g. switching to NS HYP
> mode, setting the CNTFRQ etc.
>
> Wouldn't it be better to do all this stuff in the bootloader and either
> implement PSCI or have the bootloader do the traditional holding pen and
> mbox address thing?
Out of interest, where is PSCI defined?
Does this also mean it is very difficult or impossible to actually
power down CPU cores?
--
Ben Dooks http://www.codethink.co.uk/
Senior Engineer Codethink - Providing Genius
next prev parent reply other threads:[~2013-09-26 17:03 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-22 12:21 [PATCH V3: Add Smp support for Allwinner A20. 0/3] Fan Rong
2013-09-22 12:21 ` Fan Rong
2013-09-22 12:21 ` [PATCH V3: Add Smp support for Allwinner A20. 1/3] Add smp support for Allwinner A20(sunxi 7i) Fan Rong
2013-09-22 12:21 ` Fan Rong
2013-09-22 13:00 ` Russell King - ARM Linux
2013-09-22 13:00 ` Russell King - ARM Linux
2013-09-22 13:50 ` cinifr
2013-09-22 13:50 ` cinifr
2013-09-22 14:44 ` [linux-sunxi] " Ian Campbell
2013-09-22 14:44 ` Ian Campbell
[not found] ` <CAK3cCBzMXdeeSPC-OpWcHAuef=ocpy5n0=Fc2yBECPnU=2OTXw@mail.gmail.com>
2013-09-23 7:18 ` [PATCH " Ian Campbell
2013-09-23 7:18 ` Ian Campbell
2013-09-23 14:43 ` cinifr
2013-09-23 14:43 ` cinifr
2013-09-23 18:34 ` maxime.ripard at free-electrons.com
2013-09-23 18:34 ` maxime.ripard
2013-09-26 17:03 ` Ben Dooks [this message]
2013-09-23 18:17 ` [PATCH V3: Add Smp support for Allwinner A20. " Maxime Ripard
2013-09-23 18:17 ` Maxime Ripard
2013-09-24 16:22 ` cinifr
2013-09-24 16:22 ` cinifr
2013-09-25 18:44 ` Maxime Ripard
2013-09-25 18:44 ` Maxime Ripard
2013-09-28 13:48 ` cinifr
2013-09-28 13:48 ` cinifr
2013-09-30 16:47 ` Maxime Ripard
2013-09-30 16:47 ` Maxime Ripard
2013-10-02 20:13 ` Russell King - ARM Linux
2013-10-02 20:13 ` Russell King - ARM Linux
2013-09-22 12:21 ` [PATCH V3: Add Smp support for Allwinner A20. 2/3] Add cpuconfig nodes in dts for smp configure Fan Rong
2013-09-22 12:21 ` Fan Rong
2013-09-23 17:03 ` Maxime Ripard
2013-09-23 17:03 ` Maxime Ripard
2013-09-22 12:21 ` [PATCH V3: Add Smp support for Allwinner A20. 3/3] add arch count timer node in dts for Allwinner A20(sunxi 7i) Fan Rong
2013-09-22 12:21 ` Fan Rong
2013-09-23 17:06 ` Maxime Ripard
2013-09-23 17:06 ` Maxime Ripard
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