From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 27 May 2025 08:43:21 +0200 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 1uJo1x-000lwz-2g for lore@lore.pengutronix.de; Tue, 27 May 2025 08:43:21 +0200 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 1uJo1x-0005b3-8L for lore@pengutronix.de; Tue, 27 May 2025 08:43:21 +0200 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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=cCfTp8DHp2Ql4P3aUyrLz5szhWcv/ZRl3LWDhmf+G/s=; b=m+V4TY/bT8nce+XxizVN3ZoGMZ BkjfsWJ+tEYA7XCjrslSOD6E0KJrmzBJBtOrB7ZjvYKAIvhPui/7E+mtWpFJ7rjnd4HHfJJq42pow JrNA4CQZQKIx2+GTsKPcgtV4KwI2esUMqQarjeBUhxCLQnKab6B1agxcPP6w3MV1uWKUCc11CSVNL 4uEY1jwfBZO9Ug7VIErIZW0OJnty2Fn3RgasyuNKH3Ngx7eoIt60UwFIjv4OFsqMMb9KYFU45+L5o 6PSTWRFDiq2p3ZWTrY5cVj4Sb4b7ory/hT4huGUmgdueUqxzL1aURUHYgnVir+9+Gny7fvIk+mHwb HZcERp3g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uJo1X-0000000A3f0-0bbH; Tue, 27 May 2025 06:42:55 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uJnzy-0000000A3Oi-0hmA for barebox@lists.infradead.org; Tue, 27 May 2025 06:41:19 +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 1uJnzw-0005Kd-VN; Tue, 27 May 2025 08:41:16 +0200 Received: from pty.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::c5]) 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 1uJnzw-000NGe-2X; Tue, 27 May 2025 08:41:16 +0200 Received: from sha by pty.whiteo.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1uJnzw-00CQhE-2E; Tue, 27 May 2025 08:41:16 +0200 Date: Tue, 27 May 2025 08:41:16 +0200 From: Sascha Hauer To: Michael Tretter Cc: BAREBOX Message-ID: References: <20250526-rk3588-optee-v1-0-5004995cbd03@pengutronix.de> <20250526-rk3588-optee-v1-5-5004995cbd03@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250526-rk3588-optee-v1-5-5004995cbd03@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250526_234118_212751_AE0E99DF X-CRM114-Status: GOOD ( 22.11 ) 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=-6.7 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 autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH 5/9] PBL: fdt: make minimum fdt size configurable 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) On Mon, May 26, 2025 at 04:38:11PM +0200, Michael Tretter wrote: > Adding or modifying nodes in the fdt may change the size of the fdt. > This needs some reserved space in the fdt to avoid overriding memory > that comes after the fdt and is already used. > > Signed-off-by: Michael Tretter > --- > pbl/Kconfig | 11 +++++++++++ > scripts/Makefile.lib | 2 ++ > 2 files changed, 13 insertions(+) > > diff --git a/pbl/Kconfig b/pbl/Kconfig > index 6e3581829d589c7b06ed878b09bf74e16a0c3086..489b2001a855d62e11a2159311332b0e67f3a754 100644 > --- a/pbl/Kconfig > +++ b/pbl/Kconfig > @@ -60,6 +60,17 @@ config PBL_VERIFY_PIGGY > config PBL_CLOCKSOURCE > bool > > +config PBL_FDT_MIN_SIZE > + hex > + default 0x0 > + prompt "Minimum size of the FDT blob" > + help > + The TF-A or OP-TEE may modify the FDT or add nodes to the FDT. This > + may increases the size of the device tree. This may override the > + barebox binary. > + > + The minimum size should be at least CFG_DTB_MAX_SIZE for OP-TEE. > + > config BOARD_GENERIC_DT > bool > select LIBFDT > diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib > index b10119797686ea31fe927d29a7849ad525c8c835..f50006f57200a76a86c7e29175dd7e35ab138e26 100644 > --- a/scripts/Makefile.lib > +++ b/scripts/Makefile.lib > @@ -396,6 +396,8 @@ ifeq ($(CONFIG_OF_OVERLAY_LIVE), y) > DTC_FLAGS.dtb += -@ > endif > > +DTC_FLAGS.dtb += --space $(CONFIG_PBL_FDT_MIN_SIZE) --space sets the minimum fdt size. The fdt size will vary over time and different boards. Isn't --pad more suitable for what you want to archieve? Sascha -- 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 |