From: Tom Rini <trini@konsulko.com>
To: Bryan Brattlof <bb@ti.com>
Cc: Vignesh Raghavendra <vigneshr@ti.com>, Andrew Davis <afd@ti.com>,
Judith Mendez <jm@ti.com>, Kamlesh Gurudasani <kamlesh@ti.com>,
UBoot Mailing List <u-boot@lists.denx.de>
Subject: Re: [PATCH 3/5] arm: mach-k3: copy bootindex to OCRAM for main domain SPL
Date: Tue, 10 Jan 2023 21:17:06 -0500 [thread overview]
Message-ID: <20230111021706.GC3787616@bill-the-cat> (raw)
In-Reply-To: <20221224011525.4696-4-bb@ti.com>
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On Fri, Dec 23, 2022 at 07:15:23PM -0600, Bryan Brattlof wrote:
> Texas Instruments has begun enabling security settings on the SoCs it
> produces to instruct ROM and TIFS to begin protecting the Security
> Management Subsystem (SMS) from other binaries we load into the chip by
> default.
>
> One way ROM and TIFS do this is by enabling firewalls to protect the
> OCSRAM and HSM RAM regions they're using during bootup.
>
> The HSM RAM the wakeup SPL is in is firewalled by TIFS to protect
> itself from the main domain applications. This means the 'bootindex'
> value in HSM RAM, left by ROM to indicate if we're using the primary
> or secondary boot-method, must be moved to OCSRAM (that TIFS has open
> for us) before we make the jump to the main domain so the main domain's
> bootloaders can keep access to this information.
>
> Signed-off-by: Bryan Brattlof <bb@ti.com>
Applied to u-boot/master, thanks!
--
Tom
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next prev parent reply other threads:[~2023-01-11 2:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-24 1:15 [PATCH 0/5] add support for hs bootflows to am62a Bryan Brattlof
2022-12-24 1:15 ` [PATCH 1/5] configs: restrict am62ax wakup SPL size Bryan Brattlof
2023-01-11 2:16 ` Tom Rini
2022-12-24 1:15 ` [PATCH 2/5] configs: am62a: move stack and heap to HSM RAM Bryan Brattlof
2023-01-11 2:17 ` Tom Rini
2022-12-24 1:15 ` [PATCH 3/5] arm: mach-k3: copy bootindex to OCRAM for main domain SPL Bryan Brattlof
2023-01-11 2:17 ` Tom Rini [this message]
2022-12-24 1:15 ` [PATCH 4/5] configs: am62a: convert bootcmd to distro_bootcmd Bryan Brattlof
2023-01-11 2:17 ` Tom Rini
2022-12-24 1:15 ` [PATCH 5/5] configs: am62a: use kernel fitImage when using secure bootflow Bryan Brattlof
2023-01-11 2:17 ` Tom Rini
2022-12-29 9:14 ` [PATCH 0/5] add support for hs bootflows to am62a Kamlesh Gurudasani
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