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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 43C7DC433F5 for ; Thu, 11 Nov 2021 09:27:20 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 8FC64604D7 for ; Thu, 11 Nov 2021 09:27:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 8FC64604D7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.denx.de Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 779F083A0A; Thu, 11 Nov 2021 10:27:11 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id D8A3D83A09; Thu, 11 Nov 2021 10:26:53 +0100 (CET) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id 449D983A0E for ; Thu, 11 Nov 2021 10:26:46 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=peter.hoyes@arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 6BCC4ED1; Thu, 11 Nov 2021 01:26:45 -0800 (PST) Received: from e125920.cambridge.arm.com (unknown [10.1.199.43]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id BB7A63F5A1; Thu, 11 Nov 2021 01:26:44 -0800 (PST) From: Peter Hoyes To: u-boot@lists.denx.de Cc: andre.przywara@arm.com, diego.sueiro@arm.com, Peter Hoyes Subject: [PATCH v2 4/5] vexpress64: Enable OF_CONTROL and OF_BOARD for VExpress64 Date: Thu, 11 Nov 2021 09:26:02 +0000 Message-Id: <20211111092603.774415-5-peter.hoyes@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211111092603.774415-1-peter.hoyes@arm.com> References: <20211111092603.774415-1-peter.hoyes@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 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 0.103.2 at phobos.denx.de X-Virus-Status: Clean From: Peter Hoyes Capture x0 in lowlevel_init.S as potential fdt address. Modify board_fdt_blob_setup to use fdt address from either vexpress_aemv8.h or lowlevel_init.S. Signed-off-by: Peter Hoyes --- board/armltd/vexpress64/Makefile | 2 +- board/armltd/vexpress64/lowlevel_init.S | 12 ++++++++++++ board/armltd/vexpress64/vexpress64.c | 26 +++++++++++++++++++++++++ 3 files changed, 39 insertions(+), 1 deletion(-) create mode 100644 board/armltd/vexpress64/lowlevel_init.S diff --git a/board/armltd/vexpress64/Makefile b/board/armltd/vexpress64/Makefile index 868dc4f629..1878fbed4e 100644 --- a/board/armltd/vexpress64/Makefile +++ b/board/armltd/vexpress64/Makefile @@ -3,5 +3,5 @@ # (C) Copyright 2000-2004 # Wolfgang Denk, DENX Software Engineering, wd@denx.de. -obj-y := vexpress64.o +obj-y := vexpress64.o lowlevel_init.o obj-$(CONFIG_TARGET_VEXPRESS64_JUNO) += pcie.o diff --git a/board/armltd/vexpress64/lowlevel_init.S b/board/armltd/vexpress64/lowlevel_init.S new file mode 100644 index 0000000000..3dcfb85d0e --- /dev/null +++ b/board/armltd/vexpress64/lowlevel_init.S @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * (C) Copyright 2021 Arm Limited + */ + +.global save_boot_params +save_boot_params: + + adr x8, prior_stage_fdt_address + str x0, [x8] + + b save_boot_params_ret diff --git a/board/armltd/vexpress64/vexpress64.c b/board/armltd/vexpress64/vexpress64.c index d2f307cca5..d17b463be5 100644 --- a/board/armltd/vexpress64/vexpress64.c +++ b/board/armltd/vexpress64/vexpress64.c @@ -85,7 +85,15 @@ int dram_init_banksize(void) return 0; } +/* Assigned in lowlevel_init.S + * Push the variable into the .data section so that it + * does not get cleared later. + */ +unsigned long __section(".data") prior_stage_fdt_address; + #ifdef CONFIG_OF_BOARD + +#ifdef CONFIG_TARGET_VEXPRESS64_JUNO #define JUNO_FLASH_SEC_SIZE (256 * 1024) static phys_addr_t find_dtb_in_nor_flash(const char *partname) { @@ -130,9 +138,11 @@ static phys_addr_t find_dtb_in_nor_flash(const char *partname) return ~0; } +#endif void *board_fdt_blob_setup(int *err) { +#ifdef CONFIG_TARGET_VEXPRESS64_JUNO phys_addr_t fdt_rom_addr = find_dtb_in_nor_flash(CONFIG_JUNO_DTB_PART); *err = 0; @@ -142,6 +152,22 @@ void *board_fdt_blob_setup(int *err) } return (void *)fdt_rom_addr; +#endif + +#ifdef VEXPRESS_FDT_ADDR + if (fdt_magic(VEXPRESS_FDT_ADDR) == FDT_MAGIC) { + *err = 0; + return (void *)VEXPRESS_FDT_ADDR; + } +#endif + + if (fdt_magic(prior_stage_fdt_address) == FDT_MAGIC) { + *err = 0; + return (void *)prior_stage_fdt_address; + } + + *err = -ENXIO; + return NULL; } #endif -- 2.25.1