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 smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 78836C00140 for ; Sun, 31 Jul 2022 08:32:47 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id D588682F6F; Sun, 31 Jul 2022 08:32:46 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org D588682F6F X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kbJv6yJ6J8zu; Sun, 31 Jul 2022 08:32:45 +0000 (UTC) Received: from ash.osuosl.org (ash.osuosl.org [140.211.166.34]) by smtp1.osuosl.org (Postfix) with ESMTP id 610AA82E5F; Sun, 31 Jul 2022 08:32:44 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org 610AA82E5F Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by ash.osuosl.org (Postfix) with ESMTP id 9CD721BF395 for ; Sun, 31 Jul 2022 08:32:43 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 667B240510 for ; Sun, 31 Jul 2022 08:32:43 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 667B240510 X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id eSoOubbS-U_C for ; Sun, 31 Jul 2022 08:32:42 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 5DB2E403EA Received: from relay7-d.mail.gandi.net (relay7-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::227]) by smtp2.osuosl.org (Postfix) with ESMTPS id 5DB2E403EA for ; Sun, 31 Jul 2022 08:32:42 +0000 (UTC) Received: (Authenticated sender: thomas.petazzoni@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id 0148B20003; Sun, 31 Jul 2022 08:32:39 +0000 (UTC) Date: Sun, 31 Jul 2022 10:32:38 +0200 To: Giulio Benetti Message-ID: <20220731103238.36ae5e7f@windsurf> In-Reply-To: References: <20220728164006.16652-1-x-shi@ti.com> <20220728164006.16652-5-x-shi@ti.com> Organization: Bootlin X-Mailer: Claws Mail 4.1.0 (GTK 3.24.34; x86_64-redhat-linux-gnu) MIME-Version: 1.0 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1659256360; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=B64iQojRttThtGfv9oIcO4WjswilMiUx1oeMmdxsa+g=; b=ijqa8PonpEnolChsyfnOejPK80SokxH6O4/OLBcxnV9SC5RS9VxE+Qn4JGtp3kaRWi3XP7 ZFbp74cg7xveA7DvdzoCpoBnFaKiZuKmrl5bTdITENM1LWBO/Oag6iFbs9W3I9zOjAMsWr QGde0vpdrMtIFQk3Tl+thK3zaKnNH66oxwxfwv48LFTXpUr3Atd6iCjwT24l7lhhXo9Rn4 dtLepkI+w3qO1aMuI81dHAqEp9tNF4utRh4ueJkVrRBlM0eDSoJ1t8wlKcIAsjzvaMbMmU 9Uj+MfPQrwM7f6BcOLD2V5PX6qmu6wsAD4C7JJOIvuqXzHt1SopAvdedLcRQ0Q== X-Mailman-Original-Authentication-Results: smtp2.osuosl.org; dkim=pass (2048-bit key, unprotected) header.d=bootlin.com header.i=@bootlin.com header.a=rsa-sha256 header.s=gm1 header.b=ijqa8Pon Subject: Re: [Buildroot] [PATCH v2 4/4] board/ti: add new boards X-BeenThere: buildroot@buildroot.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion and development of buildroot List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Thomas Petazzoni via buildroot Reply-To: Thomas Petazzoni Cc: Anand Gadiyar , Xuanhao Shi , Suniel Mahesh , buildroot@buildroot.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: buildroot-bounces@buildroot.org Sender: "buildroot" Hello Giulio On Sun, 31 Jul 2022 03:15:17 +0200 Giulio Benetti wrote: > I don't know the boot-flow of this processor, so you need the SPL and > then again another SPL and u-boot too? This was explained in previous iterations of the patch series, and to some extent in the commit log of PATCH 2/4 (though perhaps not very clearly). This SoC is kind of special. It needs a U-Boot that runs on the Cortex-A cores, built ARM64. But it also needs a firmware running on a separate Cortex-R5 core, and it turns out that this firmware is also... U-Boot. So indeed, we need to build two U-Boots: one for the ARM64 cores, one for the Cortex-R5 core. The U-Boot for the ARM64 cores is built using boot/uboot/, like for all platforms. The special U-Boot for Cortex-R5 is built using the boot/ti-k3-r5-loader package. Best regards, Thomas -- Thomas Petazzoni, co-owner and CEO, Bootlin Embedded Linux and Kernel engineering and training https://bootlin.com _______________________________________________ buildroot mailing list buildroot@buildroot.org https://lists.buildroot.org/mailman/listinfo/buildroot