From nobody Sat Feb 7 04:46:54 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) client-ip=66.175.222.108; envelope-from=bounce+27952+87225+1787277+3901457@groups.io; helo=mail02.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+87225+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1646227918; cv=none; d=zohomail.com; s=zohoarc; b=i6WqY8wnocMIHnIpZiw1l65MItpwx+H8XMTqP+yXmMA3HE6T6WeC2BSfl37XIRHkfPSJLIqSCJTpx/SkgZFRlfFg4obsw6pmfERri2Ydo7TBUmhwNfdd0FeUX+Buf1RzPMGGrjzSfFfAqX9kjQzX9AoAUwaiwwtTAalLNZd1KWE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1646227918; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:References:Sender:Subject:To; bh=MRoKORBMcvzT4dUX1PFtu7gs3GARzsdS5f0QfjuhSX4=; b=VMUIw+2vB+Gs2S+UlK9Of4XfGLEN4L6qETIBtifVswo3HZk8u9+PwsGLWGyqElW0XvpqEfxs7W2KYzu2zgGQA4o2YpHocd5cIP8mXHVYH23wMOEopxThmQsEWBIBetf8HIXkGoAGlIYfxnQWtl9fQuA93LXO12i9KZoasNF8gh8= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+87225+1787277+3901457@groups.io; dmarc=fail header.from= (p=none dis=none) Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by mx.zohomail.com with SMTPS id 1646227918536389.60918057557717; Wed, 2 Mar 2022 05:31:58 -0800 (PST) Return-Path: X-Received: by 127.0.0.2 with SMTP id q9QzYY1788612xH9unyv0U5M; Wed, 02 Mar 2022 05:31:58 -0800 X-Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by mx.groups.io with SMTP id smtpd.web10.7218.1646227914344900897 for ; Wed, 02 Mar 2022 05:31:57 -0800 X-IronPort-AV: E=McAfee;i="6200,9189,10273"; a="240813671" X-IronPort-AV: E=Sophos;i="5.90,149,1643702400"; d="scan'208";a="240813671" X-Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Mar 2022 05:31:53 -0800 X-IronPort-AV: E=Sophos;i="5.90,149,1643702400"; d="scan'208";a="535389198" X-Received: from spearce-mobl1.amr.corp.intel.com (HELO sboeuf-mobl.home) ([10.252.27.130]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Mar 2022 05:31:52 -0800 From: "Boeuf, Sebastien" To: devel@edk2.groups.io Cc: jiewen.yao@intel.com, jordan.l.justen@intel.com, kraxel@redhat.com, sebastien.boeuf@intel.com Subject: [edk2-devel] [PATCH v6 1/8] OvmfPkg: Make the Xen ELF header generator more flexible Date: Wed, 2 Mar 2022 14:31:30 +0100 Message-Id: <57faf25b046346821a99adbcf9a6718b8ca31a47.1646227817.git.sebastien.boeuf@intel.com> In-Reply-To: References: MIME-Version: 1.0 Precedence: Bulk List-Unsubscribe: List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,sebastien.boeuf@intel.com X-Gm-Message-State: Ze97XhuGH16v5ChzahnYYFGVx1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1646227918; bh=CNu8NKCwKUfSXNtaQ0yjZUMDCehjVXpjB5ra6UOBGOQ=; h=Cc:Content-Type:Date:From:Reply-To:Subject:To; b=GPCdS239GL5HwwS4vXBEsA7DEz62TQNSbFkwEPA8ZCmIL68USXJnUr1nHC2RS8JcjUE e6TEVnHrUFO1zDnp04+uSz78U03Z3scJ9lnExX/upy4R9yNr5V/dALLfqN+tW1ZerT82B jiBUea1t0u0FlLBg1n7wETXUc/SZAMg5ZV0= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1646227919196100001 Content-Type: text/plain; charset="utf-8" From: Sebastien Boeuf Adding some flexibility to the program through optional parameters and global define, so that other targets can use the generator. * A global define is added so that we can choose at build time if we want to use 32-bit or 64-bit base structures. * A first optional parameter is added so the user can provide the expected blob size of the generated binary. * A second optional parameter is added so the user can specify an output file to which the generated output will be printed. The default behavior isn't modified. Acked-by: Gerd Hoffmann Signed-off-by: Sebastien Boeuf --- OvmfPkg/OvmfXenElfHeaderGenerator.c | 141 +++++++++++++++++++++------- 1 file changed, 109 insertions(+), 32 deletions(-) diff --git a/OvmfPkg/OvmfXenElfHeaderGenerator.c b/OvmfPkg/OvmfXenElfHeader= Generator.c index 489060cdad..672129b85d 100644 --- a/OvmfPkg/OvmfXenElfHeaderGenerator.c +++ b/OvmfPkg/OvmfXenElfHeaderGenerator.c @@ -10,19 +10,31 @@ **/ =20 #include "elf.h" -#include "stdio.h" +#include "fcntl.h" +#include "stdbool.h" #include "stddef.h" +#include "stdio.h" +#include "stdlib.h" =20 void print_hdr ( + FILE *file, void *s, - size_t size + size_t size, + bool end_delimiter ) { char *c =3D s; =20 - while (size--) { - printf ("0x%02hhx, ", *(c++)); + fprintf (file, " "); + while (size-- > 1) { + fprintf (file, "0x%02hhx, ", *(c++)); + } + + if (end_delimiter) { + fprintf (file, "0x%02hhx,", *c); + } else { + fprintf (file, "0x%02hhx", *c); } } =20 @@ -36,34 +48,79 @@ typedef struct { uint32_t desc; } xen_elfnote_phys32_entry; =20 +#define LICENSE_HDR "\ +## @file\r\n\ +# FDF include file that defines a PVH ELF header.\r\n\ +#\r\n\ +# Copyright (c) 2022, Intel Corporation. All rights reserved.\r\n\ +#\r\n\ +# SPDX-License-Identifier: BSD-2-Clause-Patent\r\n\ +#\r\n\ +##\r\n\ +\r\n\ +" + int main ( - void + int argc, + char *argv[] ) { /* FW_SIZE */ size_t ovmf_blob_size =3D 0x00200000; /* Load OVMF at 1MB when running as PVH guest */ uint32_t ovmf_base_address =3D 0x00100000; + uint32_t ovmfxen_pvh_entry_point; + size_t offset_into_file =3D 0; + char *endptr, *str; + long param; + FILE *file =3D stdout; + + /* Parse the size parameter */ + if (argc > 1) { + str =3D argv[1]; + param =3D strtol (str, &endptr, 10); + if (endptr !=3D str) { + ovmf_blob_size =3D (size_t)param; + } + } + + /* Parse the filepath parameter */ + if (argc > 2) { + file =3D fopen (argv[2], "w"); + fprintf (file, LICENSE_HDR); + } + /* Xen PVH entry point */ - uint32_t ovmfxen_pvh_entry_point =3D ovmf_base_address + ovmf_blob_size= - 0x30; - size_t offset_into_file =3D 0; + ovmfxen_pvh_entry_point =3D ovmf_base_address + ovmf_blob_size - 0x30; =20 /* ELF file header */ + #ifdef PVH64 + Elf64_Ehdr hdr =3D { + #else Elf32_Ehdr hdr =3D { - .e_ident =3D ELFMAG, - .e_type =3D ET_EXEC, - .e_machine =3D EM_386, - .e_version =3D EV_CURRENT, - .e_entry =3D ovmfxen_pvh_entry_point, - .e_flags =3D R_386_NONE, - .e_ehsize =3D sizeof (hdr), + #endif + .e_ident =3D ELFMAG, + .e_type =3D ET_EXEC, + .e_machine =3D EM_386, + .e_version =3D EV_CURRENT, + .e_entry =3D ovmfxen_pvh_entry_point, + .e_flags =3D R_386_NONE, + .e_ehsize =3D sizeof (hdr), + #ifdef PVH64 + .e_phentsize =3D sizeof (Elf64_Phdr), + #else .e_phentsize =3D sizeof (Elf32_Phdr), + #endif }; =20 offset_into_file +=3D sizeof (hdr); =20 - hdr.e_ident[EI_CLASS] =3D ELFCLASS32; + #ifdef PVH64 + hdr.e_ident[EI_CLASS] =3D ELFCLASS64; + #else + hdr.e_ident[EI_CLASS] =3D ELFCLASS32; + #endif hdr.e_ident[EI_DATA] =3D ELFDATA2LSB; hdr.e_ident[EI_VERSION] =3D EV_CURRENT; hdr.e_ident[EI_OSABI] =3D ELFOSABI_LINUX; @@ -71,14 +128,22 @@ main ( hdr.e_phoff =3D sizeof (hdr); =20 /* program header */ + #ifdef PVH64 + Elf64_Phdr phdr_load =3D { + #else Elf32_Phdr phdr_load =3D { + #endif .p_type =3D PT_LOAD, .p_offset =3D 0, /* load everything */ .p_paddr =3D ovmf_base_address, .p_filesz =3D ovmf_blob_size, .p_memsz =3D ovmf_blob_size, .p_flags =3D PF_X | PF_W | PF_R, + #ifdef PVH64 + .p_align =3D 4, + #else .p_align =3D 0, + #endif }; =20 phdr_load.p_vaddr =3D phdr_load.p_paddr; @@ -98,12 +163,20 @@ main ( sizeof (xen_elfnote_phys32_entry) - offsetof (xen_elfnote_phys32_entry, desc), }; - Elf32_Phdr phdr_note =3D { + #ifdef PVH64 + Elf64_Phdr phdr_note =3D { + #else + Elf32_Phdr phdr_note =3D { + #endif .p_type =3D PT_NOTE, .p_filesz =3D sizeof (xen_elf_note), .p_memsz =3D sizeof (xen_elf_note), .p_flags =3D PF_R, + #ifdef PVH64 + .p_align =3D 4, + #else .p_align =3D 0, + #endif }; =20 hdr.e_phnum +=3D 1; @@ -120,31 +193,35 @@ main ( size_t hdr_size =3D sizeof (hdr); size_t entry_off =3D offsetof (typeof(hdr), e_entry); =20 - printf ("# ELF file header\n"); - print_hdr (&hdr, entry_off); - printf ("\n"); - print_hdr (&hdr.e_entry, sizeof (hdr.e_entry)); - printf (" # hdr.e_entry\n"); - print_hdr (&hdr.e_entry + 1, hdr_size - entry_off - sizeof (hdr.e_entry)= ); + fprintf (file, "DATA =3D {\r\n"); =20 - printf ("\n\n# ELF Program segment headers\n"); - printf ("# - Load segment\n"); + fprintf (file, " # ELF file header\r\n"); + print_hdr (file, &hdr, entry_off, true); + fprintf (file, "\r\n"); + print_hdr (file, &hdr.e_entry, sizeof (hdr.e_entry), true); + fprintf (file, " # hdr.e_entry\r\n"); + print_hdr (file, &hdr.e_entry + 1, hdr_size - entry_off - sizeof (hdr.e_= entry), true); + + fprintf (file, "\r\n\r\n # ELF Program segment headers\r\n"); + fprintf (file, " # - Load segment\r\n"); for (i =3D 0; i < sizeof (phdr_load); i +=3D 4) { - print_hdr (((char *)&phdr_load) + i, 4); - printf ("\n"); + print_hdr (file, ((char *)&phdr_load) + i, 4, true); + fprintf (file, "\r\n"); } =20 - printf ("# - ELFNOTE segment\n"); + fprintf (file, " # - ELFNOTE segment\r\n"); for (i =3D 0; i < sizeof (phdr_note); i +=3D 4) { - print_hdr (((char *)&phdr_note) + i, 4); - printf ("\n"); + print_hdr (file, ((char *)&phdr_note) + i, 4, true); + fprintf (file, "\r\n"); } =20 - printf ("\n# XEN_ELFNOTE_PHYS32_ENTRY\n"); + fprintf (file, "\r\n # XEN_ELFNOTE_PHYS32_ENTRY\r\n"); for (i =3D 0; i < sizeof (xen_elf_note); i +=3D 4) { - print_hdr (((char *)&xen_elf_note) + i, 4); - printf ("\n"); + print_hdr (file, ((char *)&xen_elf_note) + i, 4, (sizeof (xen_elf_note= ) - i) > 4); + fprintf (file, "\r\n"); } =20 + fprintf (file, "}\r\n"); + return 0; } --=20 2.32.0 --------------------------------------------------------------------- Intel Corporation SAS (French simplified joint stock company) Registered headquarters: "Les Montalets"- 2, rue de Paris,=20 92196 Meudon Cedex, France Registration Number: 302 456 199 R.C.S. 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