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[189.203.106.235]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7dcd56bd0e4sm371962a34.2.2026.04.20.11.12.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Apr 2026 11:12:03 -0700 (PDT) Date: Mon, 20 Apr 2026 12:11:59 -0600 From: Tom Rini To: Aswin Murugan Cc: casey.connolly@linaro.org, neil.armstrong@linaro.org, sumit.garg@kernel.org, sughosh.ganu@arm.com, ilias.apalodimas@linaro.org, gchan9527@gmail.com, mchitale@ventanamicro.com, maximmosk4@gmail.com, jonas@kwiboo.se, marek.vasut@mailbox.org, quentin.schulz@cherry.de, peng.fan@nxp.com, sajattack@postmarketos.org, balaji.selvanathan@oss.qualcomm.com, wolfgang.wallner@at.abb.com, e@freeshell.de, yangshiji66@outlook.com, jan.kiszka@siemens.com, funderscore@postmarketos.org, hs@nabladev.com, kory.maincent@bootlin.com, jj251510319013@gmail.com, carlos.lopezr4096@gmail.com, u-boot-qcom@groups.io, u-boot@lists.denx.de Subject: Re: [PATCH v3 0/7] Add FIT multi-DTB selection for Qualcomm platforms Message-ID: <20260420181159.GA2373171@bill-the-cat> References: <20260417120951.3454249-1-aswin.murugan@oss.qualcomm.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="YSHt2C01AUqGcPn4" Content-Disposition: inline In-Reply-To: <20260417120951.3454249-1-aswin.murugan@oss.qualcomm.com> X-Clacks-Overhead: GNU Terry Pratchett X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean --YSHt2C01AUqGcPn4 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Apr 17, 2026 at 05:39:44PM +0530, Aswin Murugan wrote: > This series adds dynamic device tree selection from FIT images for > Qualcomm Snapdragon platforms, enabling U-Boot to select the > appropriate DTB based on hardware parameters detected from SMEM. >=20 > Qualcomm fit based DTB format is documented in [1] > The fit image contains only DTB, while the kernel will be part of UKI ima= ge. >=20 > The implementation consists of three parts: >=20 > 1. SMEM cache infrastructure: Provides cached access to commonly > used SMEM data (socinfo, RAM partitions) to avoid redundant > lookups during boot. Includes socinfo header from Linux kernel > for SoC identification. >=20 > 2. FIT multi-DTB selection: Implements the core selection logic > that reads hardware parameters from SMEM, parses metadata DTB, > matches FIT configurations, and loads the selected DTB with > overlays. Integrates with EFI boot flow by setting fdt_addr. >=20 > 3. mkimage: add fatfs image type for FAT partition images > Added fatimage.c handler that uses mkfs.vfat and mcopy to create > FAT images from a directory. I'm unsure why part 3 here is appropriate for U-Boot. It's wrapping existing tooling to create a fat image? --=20 Tom --YSHt2C01AUqGcPn4 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTzzqh0PWDgGS+bTHor4qD1Cr/kCgUCaeZsbwAKCRAr4qD1Cr/k CvABAP9Xi7VeMSY80PkS1+0XKkPmrAv2mhCS221aDdoKVh+hwQD+JrGkraX9pIkH KrN3B7VlAophBBW5ePLRA+Y9YztIyAU= =lwPU -----END PGP SIGNATURE----- --YSHt2C01AUqGcPn4--