From mboxrd@z Thu Jan 1 00:00:00 1970 From: santosh.shilimkar@ti.com (Santosh) Date: Wed, 10 Aug 2011 14:20:08 +0530 Subject: [RFC PATCH 0/8] Introduce logical CPU mapping In-Reply-To: <1312926162-22469-1-git-send-email-will.deacon@arm.com> References: <1312926162-22469-1-git-send-email-will.deacon@arm.com> Message-ID: <4E424640.6040801@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Will, On Wednesday 10 August 2011 03:12 AM, Will Deacon wrote: > Hello, > > This patch series is an RFC following a discussion I had with Russell > the other day: > > http://lists.infradead.org/pipermail/linux-arm-kernel/2011-August/060370.html > > The approach I've taken is fairly simple but is enough for booting on a > CPU with physical ID != 0 on platforms which can handle it. > > Note that I haven't touched the OMAP4 or Tegra platforms since it's not > clear from the code how they would be adapted to make use of the > physical CPU number. > On OMAP, we use hardware register hand-shake for boot between a boot CPU and non-boot CPU. On OMAP4, boot CPU has to be always CPU0 to ensure that security and firewall initialisation is taken care. Other CPU can't do those things. Regards Santosh