From: Tom Rini <trini@konsulko.com>
To: Peter Hoyes <peter.hoyes@arm.com>
Cc: u-boot@lists.denx.de, patrick.delaunay@foss.st.com,
sjg@chromium.org, andre.przywara@arm.com, diego.sueiro@arm.com
Subject: Re: [PATCH v2 3/6] armv8: Add ARMv8 MPU configuration logic
Date: Thu, 2 Sep 2021 18:41:56 -0400 [thread overview]
Message-ID: <20210902224156.GV858@bill-the-cat> (raw)
In-Reply-To: <20210819155314.1787973-4-peter.hoyes@arm.com>
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On Thu, Aug 19, 2021 at 04:53:11PM +0100, Peter Hoyes wrote:
> From: Peter Hoyes <Peter.Hoyes@arm.com>
>
> Armv8r64 is the first Armv8 platform that only has a PMSA at the
> current exception level. The architecture supplement for Armv8r64
> describes new fields in ID_AA64MMFR0_EL1 which can be used to detect
> whether a VMSA or PMSA is present. These fields are RES0 on Armv8a.
>
> Add logic to read these fields and, for the protection of the memory
> used by U-Boot, initialize the MPU instead of the MMU during init, then
> clear the MPU regions before transition to the next stage.
>
> Provide a default (blank) MPU memory map, which can be overridden by
> board configurations.
>
> Signed-off-by: Peter Hoyes <Peter.Hoyes@arm.com>
Applied to u-boot/next, thanks!
--
Tom
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next prev parent reply other threads:[~2021-09-02 22:43 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-19 15:53 [PATCH v2 0/6] Armv8r64 + BASER_FVP board support Peter Hoyes
2021-08-19 15:53 ` [PATCH v2 1/6] armv8: Disable pointer authentication traps for EL1 Peter Hoyes
2021-08-20 14:44 ` Andre Przywara
2021-08-20 15:04 ` Michael Walle
2021-09-02 22:41 ` Tom Rini
2021-08-19 15:53 ` [PATCH v2 2/6] armv8: Ensure EL1&0 VMSA is enabled Peter Hoyes
2021-09-02 22:41 ` Tom Rini
2021-08-19 15:53 ` [PATCH v2 3/6] armv8: Add ARMv8 MPU configuration logic Peter Hoyes
2021-08-20 15:22 ` Andre Przywara
2021-09-02 22:41 ` Tom Rini [this message]
2021-08-19 15:53 ` [PATCH v2 4/6] vexpress64: Add BASER_FVP vexpress board variant Peter Hoyes
2021-09-02 22:42 ` Tom Rini
2021-08-19 15:53 ` [PATCH v2 5/6] arm: Use armv8_switch_to_el1 env to switch to EL1 Peter Hoyes
2021-08-20 16:57 ` Andre Przywara
2021-08-20 17:05 ` Tom Rini
2021-08-26 11:36 ` Andre Przywara
2021-09-02 22:42 ` Tom Rini
2021-09-02 23:07 ` Andre Przywara
2021-09-02 23:49 ` Tom Rini
2021-09-03 10:19 ` Peter Hoyes
2021-09-03 14:00 ` Tom Rini
2021-08-19 15:53 ` [PATCH v2 6/6] doc: Add documentation for the Arm vexpress board configs Peter Hoyes
2021-09-02 22:42 ` Tom Rini
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