From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D8BDBC433F5 for ; Tue, 5 Apr 2022 18:01:02 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 54C4E83B80; Tue, 5 Apr 2022 20:00:36 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=konsulko.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (1024-bit key; unprotected) header.d=konsulko.com header.i=@konsulko.com header.b="m1yhF2Xm"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 6517483B74; Tue, 5 Apr 2022 20:00:33 +0200 (CEST) Received: from mail-qt1-x82f.google.com (mail-qt1-x82f.google.com [IPv6:2607:f8b0:4864:20::82f]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 171BC83B59 for ; Tue, 5 Apr 2022 20:00:28 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=konsulko.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=trini@konsulko.com Received: by mail-qt1-x82f.google.com with SMTP id v2so12460543qtc.5 for ; Tue, 05 Apr 2022 11:00:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=konsulko.com; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=T7kjRVifZMJq9APZLYOHGlJxanj/y9pO/cB1+wJmwDQ=; b=m1yhF2Xmo/AUoFwx+dlcF2T76522jlXmIRDQd3WCvy3MabP+e4w8qmy9izgZAuBKtE hqMyLC0jHLv2bZxrMKwF1M06xJigRWshIA8XOeMqs3DhE/O6FIhnAWEgHcT14fLqwbNq vax2kD04e18dIBU6cG7OWSsNuKZBD5OjrBPIQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=T7kjRVifZMJq9APZLYOHGlJxanj/y9pO/cB1+wJmwDQ=; b=0VVZcv5rtq6XwxCg6XotdzeVOTiq+eST9KG/ECBtAQBCeH+zdEH/0XutocuS1t9VJn fUbNNwFpdOp2BPX0aNbDDmLqg2d2TmSDLbFVg0nz4BI5U3+JCV0WrNQEF4wTcH+iXrIq vml3Ta3RKvESX3mgRFCGRDB1eejNI3o1SsoIqn2AEZHq0NOY7tLhDGpjQvBjsiaF8Cpf HGKK6VXs3ZGAFNV/53VYfjlz5AkIFqMWNwAbLkEzLmy3gMc52f38gWqp/xgIAX1Yt/y5 oY4DkwhwqzDQwU2Vp0LXlRJ/VBT1RA5hXWyYBa0Y+wa/eJ2MAz9GWyhUxEXX75Ah/1cP Ah4w== X-Gm-Message-State: AOAM530NUHMvkosHsPV7PZ6wrzNav3IyZkZfWqfMpuqMP7751EAAPghx cdYl5yFIn8LVTh7sCHxsv6cLXw== X-Google-Smtp-Source: ABdhPJy81ZOLbXO/c5ooZopEVu52vH5uGEwaRW5+dS5UU7LTuUmLzE3isOmh7A1a5ixVvdMbxfak+w== X-Received: by 2002:ae9:e304:0:b0:67d:5342:fc89 with SMTP id v4-20020ae9e304000000b0067d5342fc89mr3177529qkf.244.1649181621869; Tue, 05 Apr 2022 11:00:21 -0700 (PDT) Received: from bill-the-cat (2603-6081-7b01-cbda-2ef0-5dff-fedb-a8ba.res6.spectrum.com. [2603:6081:7b01:cbda:2ef0:5dff:fedb:a8ba]) by smtp.gmail.com with ESMTPSA id g21-20020ac85815000000b002e06e2623a7sm10652913qtg.0.2022.04.05.11.00.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Apr 2022 11:00:21 -0700 (PDT) Date: Tue, 5 Apr 2022 14:00:19 -0400 From: Tom Rini To: Dzmitry Sankouski Cc: u-boot@lists.denx.de Subject: Re: [PATCH 1/3 v3] arm: init: save previous bootloader data Message-ID: <20220405180019.GD9042@bill-the-cat> References: <20220222184954.27024-1-dsankouski@gmail.com> <20220222184954.27024-2-dsankouski@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="tNQTSEo8WG/FKZ8E" Content-Disposition: inline In-Reply-To: <20220222184954.27024-2-dsankouski@gmail.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 0.103.5 at phobos.denx.de X-Virus-Status: Clean --tNQTSEo8WG/FKZ8E Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Feb 22, 2022 at 09:49:52PM +0300, Dzmitry Sankouski wrote: > When u-boot is used as a chain-loaded bootloader (replacing OS kernel), > previous bootloader leaves data in RAM, that can be reused. >=20 > For example, on recent arm linux system, when chainloading u-boot, > there are initramfs and fdt in RAM prepared for OS booting. Initramfs > may be modified to store u-boot's payload, thus providing the ability to > use chainloaded u-boot to boot OS without any storage support. >=20 > Two config options added: > - SAVE_PREV_BL_INITRAMFS_START_ADDR > saves initramfs start address to 'prevbl_initrd_start_addr' environment > variable > - SAVE_PREV_BL_FDT_ADDR > saves fdt address to 'prevbl_fdt_addr' environment variable >=20 > Signed-off-by: Dzmitry Sankouski > Cc: Tom Rini Applied to u-boot/master, thanks! --=20 Tom --tNQTSEo8WG/FKZ8E Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEEGjx/cOCPqxcHgJu/FHw5/5Y0tywFAmJMg7MACgkQFHw5/5Y0 tyx+wQv+MQVxumjx5vlWh9Ho6n8ierOPxygLwJ0wdnpOacSVtRw8o9LQ2m52Un04 k5O6jpVEXxJ7fEebrupHn5+ihODgLhJ22tY9DD04sQaTWlTgeSlepAWcjlcVColE VKA/mW0RTMRJMrmyBaIFrzzHk4Sd9SY4+CV9TinUbqCGm+eXKjmdPMUvZj9fk+0y 5cXsir5kJ16P8APLGyUByYcdWiEaZQiTHxGkF8DkN7w/I2QFfGqj/pqgu+Q7RFaP JBC7ALp9z0WIbkJ1xjVqkk39tzeYASt+H8Zl4gJOwP6QIds0KauPIiBUqRWzsN4o P8nOmjbkgbRWLTTyAvFGjY9y0r4it0NI6d49kuWOYVvblLbSoRGCh1vMtFt3GON0 hVTh+1lP+6s56QpJ8aqxxFnIE6snfeQfKyeSMD+QSNEDflbH3agDoAqg2jkdEwfe VPsyX3F55XOtNDFdWQaRHIVzc+wfLCM1yaF/4csTE0KjFyl7LlGU0735yELS3Pvh MDz7a8JI =6oVi -----END PGP SIGNATURE----- --tNQTSEo8WG/FKZ8E--