From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Sun, 01 Dec 2024 22:30:54 +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 1tHrWo-002pEP-0W for lore@lore.pengutronix.de; Sun, 01 Dec 2024 22:30:54 +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 1tHrWn-0006tz-V0 for lore@pengutronix.de; Sun, 01 Dec 2024 22:30:54 +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:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=VW3xPlBkT1xbzweVQ0g4HiL7UEZflu1b5F1fL9wZnVY=; b=k5BxUgVigiMe9ZyCbumzIm57yp MQLk47BbPofFHVvqvHCylWW3ttMRwXTUvdw/XjPofwB0h8UuZ9rq1hVqkxGVhx+FtIpZFpsV+cB1G Y1DH+RJwnrniY+Ijzg0jRdFrPlQgRrBoHCLb1wNtXQhmNPlMbrVMJpBlp8n3PvkJIOpDEPIiCHZKI ljEMP5TtaJnEQUFwRGt1QUgmAGnHlU6tXRQJ4xhADhYoBjz0DROhb8ve3NDIp3nkHjHANJ/HkwHIl LlGOOSfeM8KdFPsLU50GnpWI7i0k7/B9reAd/1RL4ead+1kA7X+jAFO5KmkiTzQnVBJvSyI60lviu N0wBqnZA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tHrW7-00000004POg-0xEu; Sun, 01 Dec 2024 21:30:11 +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 1tHrW3-00000004PNx-2mc8 for barebox@lists.infradead.org; Sun, 01 Dec 2024 21:30:09 +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 1tHrVy-0006Ri-V3; Sun, 01 Dec 2024 22:30:02 +0100 Received: from dude05.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::54]) 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 1tHrVv-001BYz-37; Sun, 01 Dec 2024 22:30:00 +0100 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1tHrVw-00DPUl-26; Sun, 01 Dec 2024 22:30:00 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Sohaib Mohamed , Ahmad Fatoum Date: Sun, 1 Dec 2024 22:29:59 +0100 Message-Id: <20241201212959.3196255-1-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.5 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241201_133007_703535_3548CE9B X-CRM114-Status: GOOD ( 16.84 ) 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: [PATCH master] ARM: omap: add two smaller MLO defconfigs for AM335x 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) The Beaglebone Black remains a popular board and it's not a good look to have it not compile by default due to barebox getting too big. As we keep running into size issues with the MLO defconfig, let's accept that we die bite off more than we could chew and split off the defconfigs into one for SD/MMC and another for NOR/NAND and document that users should prefer those instead. Reported-by: Sohaib Mohamed Signed-off-by: Ahmad Fatoum --- Documentation/boards/am335x.rst | 28 +++++++++++++++++++++++++--- arch/arm/Makefile | 6 ++++++ common/boards/configs/nomci.config | 1 + common/boards/configs/nomtd.config | 1 + 4 files changed, 33 insertions(+), 3 deletions(-) create mode 100644 common/boards/configs/nomci.config create mode 100644 common/boards/configs/nomtd.config diff --git a/Documentation/boards/am335x.rst b/Documentation/boards/am335x.rst index f54611428bb3..ec7322a0acdf 100644 --- a/Documentation/boards/am335x.rst +++ b/Documentation/boards/am335x.rst @@ -8,9 +8,15 @@ loader from the same medium. Building barebox ---------------- -The TI AM335x boards in barebox are covered by the ``am335x_mlo_defconfig`` -for the MLO and ``omap_defconfig`` for the regular barebox image. The -resulting images will be placed under ``images/``: +Booting with barebox on the TI AM335x is a two-stage process and unlike +more recently added SoCs, requires building barebox twice, each time +with a different defconfig: + +* ``omap_defconfig`` for the regular (second-stage) barebox image +* For the MLO first-stage, either ``am335x_mlo_sdmmc_defconfig`` for + SD/eMMC or ``am335x_mlo_rawflash_defconfig`` for raw NOR/NAND. + +The resulting images will be placed under ``images/``: :: @@ -30,6 +36,22 @@ resulting images will be placed under ``images/``: Some boards come in different variants, make sure to pick the correct one. +Size Constraints +^^^^^^^^^^^^^^^^ + +As the MLO needs to setup DRAM first, it must fit into the 109KiB +of available on-Chip SRAM. Depending on the boards, drivers and general +features enabled by your config, barebox may exceed this size resulting +in an error message during build, e.g.:: + + images/start_am33xx_myirtech_sram.pblb size 111800 > maximum size 111616 + +If you run into this issue, consider disabling some unneeded config options +for the MLO via ``make menuconfig`` and try again. +The ``am335x_mlo_sdmmc_defconfig`` and ``am335x_mlo_rawflash_defconfig`` +defconfigs do just that by disabling ``CONFIG_MTD`` and ``CONFIG_MCI``, +respectively. + Starting and updating barebox ----------------------------- diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 6785432c52ca..7138f638651e 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -2,6 +2,12 @@ KBUILD_DEFCONFIG := multi_v8_defconfig +generated_configs += $(patsubst %, %_defconfig, sdmmc rawflash) +am335x_mlo_sdmmc_defconfig: + $(call merge_into_defconfig,am335x_mlo_defconfig,nomtd) +am335x_mlo_rawflash_defconfig: + $(call merge_into_defconfig,am335x_mlo_defconfig,nomci) + KBUILD_CPPFLAGS += -D__ARM__ -fno-strict-aliasing # Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb: ifeq ($(CONFIG_CPU_64),y) diff --git a/common/boards/configs/nomci.config b/common/boards/configs/nomci.config new file mode 100644 index 000000000000..f541645cccfc --- /dev/null +++ b/common/boards/configs/nomci.config @@ -0,0 +1 @@ +# CONFIG_MCI is not set diff --git a/common/boards/configs/nomtd.config b/common/boards/configs/nomtd.config new file mode 100644 index 000000000000..f29845573ae6 --- /dev/null +++ b/common/boards/configs/nomtd.config @@ -0,0 +1 @@ +# CONFIG_MTD is not set -- 2.39.5