From nobody Sun Oct 5 03:35:13 2025 Received: from out-177.mta1.migadu.com (out-177.mta1.migadu.com [95.215.58.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 30FDA2DEA68 for ; Mon, 11 Aug 2025 09:28:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754904499; cv=none; b=qAmsThuchLjcE+6hVInwkvOYLl+SoTxkrcduZnLl/cjdmtWiOJ25K6kKBwADQWAy0hex5vYEq5w/yIGyaBDt3pzpEJHd7eoZLbqbZhGfHxtl28nL21R1vX3iKt+gRWIs+u24uflRJ55t5O76VRfJekZb1tAwV/q8Kib7xUT1haM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754904499; c=relaxed/simple; bh=Ttgxceiu76soJb3ApeD5lHRi9tdeAIqYYf4YfKvirpE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ISoSJ0NaZjAAFjR7T1hQO7bV7gB0wocpwk7YOXssQOyKQLlKDXG9aXuokArjzWB4C/+c41xSALeNduMbUW5lJ/6pngtJro0adXukv5Z/Z4A83JDHW12dgX+D7Ld0EnEuR0ADTIFE8ivbVH88U2VfCXD68QuRRqTIRMViEFYL8RE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=iwHr+l1G; arc=none smtp.client-ip=95.215.58.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="iwHr+l1G" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1754904494; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ay2HjELoUY2f+Lvw6Jk7gXFUv5V3GMr7KyOEd8INP/s=; b=iwHr+l1GjqYzJBIDiU/EtR6gaj5mnbSkZb+DUuVMGbAC4ykqjZRG8giIMqL6Lo0ZDANCp4 boHzs77PN7yMTQNGFOzHpoifU57oXWl6XL6oSC10gj/wfDkYuz6Ncgvjt2iqmRSZYeTUGk Pu+vYuk2JotzHaLID9kZqRqdZMOAGT4= From: Youling Tang To: Huacai Chen Cc: WANG Xuerui , Baoquan He , kexec@lists.infradead.org, loongarch@lists.linux.dev, linux-kernel@vger.kernel.org, youling.tang@linux.dev, Youling Tang Subject: [PATCH 1/6] LoongArch: Add struct loongarch_image_header for kernel image Date: Mon, 11 Aug 2025 17:26:54 +0800 Message-Id: <20250811092659.14903-2-youling.tang@linux.dev> In-Reply-To: <20250811092659.14903-1-youling.tang@linux.dev> References: <20250811092659.14903-1-youling.tang@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" From: Youling Tang Define a dedicated image header structure for LoongArch architecture to standardize kernel loading in bootloaders (primarily for kexec_file). This header includes critical metadata such as PE signature, entry points, image size and load address offset, etc. Signed-off-by: Youling Tang --- arch/loongarch/include/asm/image.h | 40 ++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 arch/loongarch/include/asm/image.h diff --git a/arch/loongarch/include/asm/image.h b/arch/loongarch/include/as= m/image.h new file mode 100644 index 000000000000..1f090736e71d --- /dev/null +++ b/arch/loongarch/include/asm/image.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * LoongArch binary image header. + * + * Author: Youling Tang + * Copyright (C) 2025 KylinSoft Corporation. + * + * Most code is derived from LoongArch port of kexec-tools + */ + +#ifndef __ASM_IMAGE_H +#define __ASM_IMAGE_H +#ifndef __ASSEMBLY__ + +/** + * struct loongarch_image_header + * + * @pe_sig: Optional PE format 'MZ' signature. + * @reserved_1: Reserved. + * @kernel_entry: Kernel image entry pointer. + * @image_size: An estimated size of the memory image size in LSB byte ord= er. + * @text_offset: The image load offset in LSB byte order. + * @reserved_2: Reserved. + * @reserved_3: Reserved. + * @pe_header: Optional offset to a PE format header. + **/ + +struct loongarch_image_header { + uint8_t pe_sig[2]; + uint16_t reserved_1[3]; + uint64_t kernel_entry; + uint64_t image_size; + uint64_t text_offset; + uint64_t reserved_2[3]; + uint32_t reserved_3; + uint32_t pe_header; +}; + +#endif /* __ASSEMBLY__ */ +#endif /* __ASM_IMAGE_H */ --=20 2.34.1