From: Albert ARIBAUD <albert.u.boot@aribaud.net>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 07/13] ARM: HYP/non-sec: allow relocation to secure RAM
Date: Wed, 12 Feb 2014 09:36:37 +0100 [thread overview]
Message-ID: <20140212093637.76953896@lilith> (raw)
In-Reply-To: <20131212114731.17591b11@lilith>
Hi Albert,
On Thu, 12 Dec 2013 11:47:31 +0100, Albert ARIBAUD
<albert.u.boot@aribaud.net> wrote:
> Hi Marc,
>
> On Sat, 7 Dec 2013 11:19:12 +0000, Marc Zyngier <marc.zyngier@arm.com>
> wrote:
>
> > The current non-sec switching code suffers from one major issue:
> > it cannot run in secure RAM, as a large part of u-boot still needs
> > to be run while we're switched to non-secure.
> >
> > This patch reworks the whole HYP/non-secure strategy by:
> > - making sure the secure code is the *last* thing u-boot executes
> > before entering the payload
> > - performing an exception return from secure mode directly into
> > the payload
> > - allowing the code to be dynamically relocated to secure RAM
> > before switching to non-secure.
> >
> > This involves quite a bit of horrible code, specially as u-boot
> > relocation is quite primitive.
> >
> > Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
> > ---
> > arch/arm/cpu/armv7/nonsec_virt.S | 161 +++++++++++++++++++--------------------
> > arch/arm/cpu/armv7/virt-v7.c | 59 +++++---------
> > arch/arm/include/asm/armv7.h | 10 ++-
> > arch/arm/include/asm/secure.h | 26 +++++++
> > arch/arm/lib/bootm.c | 21 ++---
> > 5 files changed, 136 insertions(+), 141 deletions(-)
> > create mode 100644 arch/arm/include/asm/secure.h
>
> It seems like patch 07/13 does not apply properly on top of current ARM.
> Can you have a look? If a rebased V3 is needed, you can remove patch 01
> from the list (or if it is simpler to you, keep it in and I'll just
> ignore it when applying).
I don't think there was a V3 for this so far; correct?
> Amicalement,
Amicalement,
--
Albert.
next prev parent reply other threads:[~2014-02-12 8:36 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-07 11:19 [U-Boot] [PATCH v2 00/13] ARMv7: add PSCI support to u-boot Marc Zyngier
2013-12-07 11:19 ` [U-Boot] [PATCH v2 01/13] ARM: HYP/non-sec: fix alignment requirements for vectors Marc Zyngier
2013-12-09 10:52 ` Ian Campbell
2013-12-07 11:19 ` [U-Boot] [PATCH v2 02/13] ARM: HYP/non-sec: move switch to non-sec to the last boot phase Marc Zyngier
2013-12-07 11:19 ` [U-Boot] [PATCH v2 03/13] ARM: HYP/non-sec: add a barrier after setting SCR.NS==1 Marc Zyngier
2013-12-07 11:19 ` [U-Boot] [PATCH v2 04/13] ARM: non-sec: reset CNTVOFF to zero Marc Zyngier
2013-12-07 11:19 ` [U-Boot] [PATCH v2 05/13] ARM: add missing HYP mode constant Marc Zyngier
2013-12-07 11:19 ` [U-Boot] [PATCH v2 06/13] ARM: HYP/non-sec: add separate section for secure code Marc Zyngier
2013-12-07 11:19 ` [U-Boot] [PATCH v2 07/13] ARM: HYP/non-sec: allow relocation to secure RAM Marc Zyngier
2013-12-12 10:47 ` Albert ARIBAUD
2014-02-12 8:36 ` Albert ARIBAUD [this message]
2014-02-12 10:52 ` Marc Zyngier
2013-12-07 11:19 ` [U-Boot] [PATCH v2 08/13] ARM: HYP/non-sec: add generic ARMv7 PSCI code Marc Zyngier
2013-12-07 11:19 ` [U-Boot] [PATCH v2 09/13] ARM: HYP/non-sec: add the option for a second-stage monitor Marc Zyngier
2013-12-07 11:19 ` [U-Boot] [PATCH v2 10/13] ARM: HYP/non-sec/PSCI: emit DT nodes Marc Zyngier
2013-12-07 11:19 ` [U-Boot] [PATCH v2 11/13] sunxi: fix SRAM_B/SRAM_D memory map Marc Zyngier
2013-12-07 11:19 ` [U-Boot] [PATCH v2 12/13] sunxi: HYP/non-sec: add sun7i PSCI backend Marc Zyngier
2013-12-07 11:19 ` [U-Boot] [PATCH v2 13/13] sunxi: HYP/non-sec: configure CNTFRQ on all CPUs Marc Zyngier
2013-12-09 10:51 ` [U-Boot] [PATCH v2 00/13] ARMv7: add PSCI support to u-boot Ian Campbell
2013-12-09 10:57 ` Marc Zyngier
2013-12-09 11:29 ` [U-Boot] [linux-sunxi] " Hans de Goede
2013-12-09 12:20 ` Marc Zyngier
2013-12-09 12:28 ` Ian Campbell
2014-02-13 10:11 ` [U-Boot] " Albert ARIBAUD
2014-02-13 10:16 ` Marc Zyngier
2014-02-25 13:38 ` Ezaul Zillmer
2014-02-25 14:04 ` Marc Zyngier
2014-02-26 12:22 ` Ezaul Zillmer
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