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Tue, 21 Mar 2023 09:13:45 +0100 Received: from sha by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1peX7p-00055b-Id; Tue, 21 Mar 2023 09:13:45 +0100 Date: Tue, 21 Mar 2023 09:13:45 +0100 To: Roland Hieber Cc: barebox@lists.infradead.org Message-ID: <20230321081345.GH7446@pengutronix.de> References: <20230320114123.2202362-1-rhi@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230320114123.2202362-1-rhi@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-Accept-Language: de,en X-Accept-Content-Type: text/plain User-Agent: Mutt/1.10.1 (2018-07-13) From: Sascha Hauer X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230321_011347_126544_6B089682 X-CRM114-Status: GOOD ( 21.48 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.7 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH] Documentation: imx: improve reboot mode section X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) On Mon, Mar 20, 2023 at 12:41:23PM +0100, Roland Hieber wrote: > Signed-off-by: Roland Hieber > --- > Documentation/boards/imx.rst | 15 +++++++++++---- > 1 file changed, 11 insertions(+), 4 deletions(-) Applied, thanks Sascha > > diff --git a/Documentation/boards/imx.rst b/Documentation/boards/imx.rst > index 6c16923340a8..6fbf1554d10e 100644 > --- a/Documentation/boards/imx.rst > +++ b/Documentation/boards/imx.rst > @@ -86,8 +86,8 @@ The images can also always be started as second stage on the target: > BootROM Reboot mode codes (bmode) > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > -For select SoCs, barebox supports communicating an alternative boot medium > -that BootROM should select after a warm reset:: > +For selected SoCs, barebox supports communicating an alternative boot medium > +that the BootROM should select after a warm reset:: > > barebox@FSL i.MX8MM EVK board:/ devinfo gpr.reboot_mode > Driver: syscon-reboot-mode > @@ -107,10 +107,17 @@ that BootROM should select after a warm reset:: > > barebox@FSL i.MX8MM EVK board:/ gpr.reboot_mode.next=serial reset -w > > -This will cause barebox to fall into serial download mode on an i.MX8MM. > +The example above will cause barebox to jump back into serial download mode on > +an i.MX8MM by writing 0x10 into the *SRC_GPR9* register (offset 0x30390094) and > +0x40000000 into the *SRC_GPR10* register (offset 0x30390098), and then issuing a > +warm :ref:`reset `. > > Different SoCs may have more possible reboot modes available. > -See the section on :ref:`Reboot modes` for more information. > +Look for documentation of the *SRC_SBMR* and *SRC_GPR* registers in the > +Reference Manual of your SoC; the values for the ``mode-*`` properties often > +correspond directly to the boot fusemap settings. > + > +See the section on :ref:`Reboot modes` for general information. > > High Assurance Boot > ^^^^^^^^^^^^^^^^^^^ > -- > 2.30.2 > > > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |