From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 09 Dec 2024 15:28:58 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tKeks-00602T-0G for lore@lore.pengutronix.de; Mon, 09 Dec 2024 15:28:58 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tKeks-0004eq-1H for lore@pengutronix.de; Mon, 09 Dec 2024 15:28:58 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:To:In-Reply-To:References: Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=GmELCSYcB2+RLpvUioKWaLZQwRTTp9QkgOkxeYu3u/Q=; b=H3xE06dnUNoVbSikJjw1xcXbWr LCrcTjwnDOLDxdMNTE7zMNO4yXI3od8RakAGQASeEMgmMArWDdQDso79oKw+X0Vfb/irvRHh5Td7n 0GGGiObV9NxHIeiqCv1dJWc31XPWC8BsFSwdKQc5CIiZeW/sbH2weOJKLGPgsxnPD/MpE57sL0PbO EcYAjKE48AFDQJnIiD6KFr9Vh9dvpl2uiFv6f0chH4yKNPM35M8DBMjWfBK2F7L+eIRlIRyZa3NQe YxOJvPSTiF3yYGK1aVCVChQBONNLhX6uMTG4u3JhUskBmt9WpAahSlgI4+o8jWVbRmtJX9pIU3RNO YQZxiqAg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tKekS-00000008Cgy-0uFz; Mon, 09 Dec 2024 14:28:32 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tKekP-00000008Cf7-0snb for barebox@lists.infradead.org; Mon, 09 Dec 2024 14:28:30 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tKek8-0004MS-1v; Mon, 09 Dec 2024 15:28:12 +0100 Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tKek7-002Wtp-02; Mon, 09 Dec 2024 15:28:11 +0100 Received: from localhost ([::1] helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1tKek7-005Elf-2J; Mon, 09 Dec 2024 15:28:11 +0100 From: Sascha Hauer Date: Mon, 09 Dec 2024 15:28:12 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20241209-ext-dt-handoff-v1-2-e61052d5d437@pengutronix.de> References: <20241209-ext-dt-handoff-v1-0-e61052d5d437@pengutronix.de> In-Reply-To: <20241209-ext-dt-handoff-v1-0-e61052d5d437@pengutronix.de> To: "open list:BAREBOX" X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1733754491; l=1480; i=s.hauer@pengutronix.de; s=20230412; h=from:subject:message-id; bh=D8/J/UxzfSUHRqIx/l6DpxT/J9G5xgb8p/nTa+jHf9U=; b=yiPnwahonJaY9+wM2T5XMIWm9myAMypb0LNkJwx0iPKOymQKTAVWNsfbeMQVfk4sX3aCa/liI gn9TtcMqGx4ClpWMU2qP3SvPPE3YnZblTl8jmkBTE2G/I/1x6teU5Po X-Developer-Key: i=s.hauer@pengutronix.de; a=ed25519; pk=4kuc9ocmECiBJKWxYgqyhtZOHj5AWi7+d0n/UjhkwTg= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241209_062829_254563_5A3DBFD0 X-CRM114-Status: GOOD ( 13.43 ) 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.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.3 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 autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 2/3] store external device tree as file X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) When barebox is chainloaded from another bootloader it usually gets passed a device tree from the previous bootloader. While this external device tree is normally not used by barebox, its contents can still be interesting, so store the device tree at /external-devicetree when found. This needs board support to pass the external device tree in handoff data, i.e. a board has to call handoff_data_add(HANDOFF_DATA_EXTERNAL_DT, dtb, size); Signed-off-by: Sascha Hauer --- common/startup.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/common/startup.c b/common/startup.c index b311b77418..abdc0c2db0 100644 --- a/common/startup.c +++ b/common/startup.c @@ -40,6 +40,8 @@ #include #include #include +#include +#include extern initcall_t __barebox_initcalls_start[], __barebox_early_initcalls_end[], __barebox_initcalls_end[]; @@ -246,6 +248,8 @@ static int run_init(void) struct stat s; glob_t g; int i, ret; + size_t size; + void *ext_dtb; setenv("PATH", "/env/bin"); export("PATH"); @@ -289,6 +293,10 @@ static int run_init(void) globfree(&g); } + ext_dtb = handoff_data_get_entry(HANDOFF_DATA_EXTERNAL_DT, &size); + if (ext_dtb) + write_file("/external-devicetree", ext_dtb, size); + /* source matching script in /env/bmode/ */ bmode = reboot_mode_get(); if (bmode) { -- 2.39.5