From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by 2002:a17:505:110e:b0:1be9:327d:8ee3 with SMTP id pu14csp1203531njb; Fri, 9 May 2025 09:04:50 -0700 (PDT) X-Forwarded-Encrypted: i=2; AJvYcCXyr9TttKExRmKS7cQK3QrR51SZF75vM1JbFgaxvYBcgvgO1U8mCIMiVdS2x4d8mCZyDYMeLG5Ivhx43Q==@linaro.org X-Google-Smtp-Source: AGHT+IG6Jm0+CshA6wOGgKFt20Klr5BvIpVpX5jMdSMoDl8+OwbNipRL3li3j6celHIil2fmynxs X-Received: by 2002:a05:620a:c51:b0:7c8:c9c:2a8a with SMTP id af79cd13be357-7cd01168cc5mr741474785a.49.1746806690287; Fri, 09 May 2025 09:04:50 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1746806690; cv=none; d=google.com; s=arc-20240605; b=ItQpQZ1P9GmYSTnXx6N4ZmZs304MQXZPuG5ZTkq0ookzp3/AFcUJ+gbDkc7f5uuzWC H6DJ/CxO+MuHJtASyVkTmxdpO3YaY5tlOBKTSURg0fYwueSa7WHflsMbNciTwU7ONto6 /wTNl81nn7xNCRQvr8DmWPjWx23qGBHMLybx1oDi0zwM9dH88MsVFx0JfJo3kgy/u0/P y1nZghM9gsgs+dX9v/eEh/zehm00aUfCbpuWm7WGSjZZp0ANdOrdlVw1W535M3PqjoE/ WxNc6Qm90TlEVQKeYmOEWa9Q+IOGGkUDHZRrf/0cC4It4/n37froQcBobT7X7y65pGem 29kQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20240605; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:subject:cc:to:from :date:dkim-signature; bh=pMOeXTqXFsYkgCRn4QYaUzZ6C7YdcKAYjPWcjG5hKjQ=; fh=QSW+GBSfp2M7+IlaMkRv294JcrtoTTIBhpXqiwaZuss=; b=h0qn91n+urFejzRBKjqdRRZZU1WdUiLLbi3zpsB04RdQ2eO5g5zbQb9f53FIOCkn9Q LZCPlHCMr0ZIJbshpgldoxKThp2klmJHMgo1Febm8fOWU4LlqLpNe4Y+2yez7kSE+dAS fKzhh30zy0AI72eNdtQDxkDCfOT9UHSTc58f8h4KO0esWtaTR/N2Cgw2xcv/Glqteang Wc+EDaLw95Dr6Rtxxb7XjdhQ5psU7KCyZftqUBPkmwXVwA+e8+DPJbOl9rF60iq/SkBv rurFrZtLLuA2KLUOeyKzviSG77U5p6934EUa+Sw64v2YA8skk+6DvZxnh4zOSYKzMWJt J+Pg==; dara=google.com ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=h3IOpwzh; spf=pass (google.com: domain of qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org"; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id af79cd13be357-7cd00fd3cc3si244638185a.305.2025.05.09.09.04.50 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Fri, 09 May 2025 09:04:50 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=h3IOpwzh; spf=pass (google.com: domain of qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org"; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=redhat.com Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uDQDL-0006RF-11; Fri, 09 May 2025 12:04:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uDQD5-0006CE-6h for qemu-arm@nongnu.org; Fri, 09 May 2025 12:04:30 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uDQCz-0004Xm-NW for qemu-arm@nongnu.org; Fri, 09 May 2025 12:04:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1746806660; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pMOeXTqXFsYkgCRn4QYaUzZ6C7YdcKAYjPWcjG5hKjQ=; b=h3IOpwzhv3x+uEECtf/EafqZ6qKXLXD5mylnQQwJuYEHfTyIR9j5taRsaBy1ZfcUFztZns 21QjNQIFQpFxlZrTQ/FERFRuW0mX3nv0Kf99DAWr5+I3ZaIoB72r7OJ5FDNpFl8DNOvrwC exVXzV9TQhxH0HI+IMZ7eSSMCZ/9UFE= Received: from mail-wr1-f69.google.com (mail-wr1-f69.google.com [209.85.221.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-119-N7OjLRbINR-1aEmSlua6SQ-1; Fri, 09 May 2025 12:04:17 -0400 X-MC-Unique: N7OjLRbINR-1aEmSlua6SQ-1 X-Mimecast-MFC-AGG-ID: N7OjLRbINR-1aEmSlua6SQ_1746806656 Received: by mail-wr1-f69.google.com with SMTP id ffacd0b85a97d-3a0b7124b5fso1460907f8f.2 for ; Fri, 09 May 2025 09:04:17 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1746806656; x=1747411456; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=T9SGTty9vioSZ28fB68+a+8ZO7FqN4j+nQiW9zGlb68=; b=c1jezcE/JoOgAg3Zog7sETm/95I1mW4Wpv01gGDeSXEyWPCQW9xx0uDXfKyFAyRYdy pHTh4f89HnOclr4OQIkzafpafAnHyJQT/PEPc3RxHkIoyYftwn8J00edojVILW0YYeCJ tgIpLNypaIX1YgHHENHe8mxUPf+MfAZnze9kxCLyY5Jms/X15wqd4QmXTBPz/zNt8xkL k9Mbj/cI92y7M3w5UltaiY5Di51yz4C4QTOXL4p7p5kfYGGcHRINu80jthq/D0ZrGVLI mPNiMdCwRqdVKLd1Occ7Nt5zJ6Scpupq3DHJu+kXcxNC2mTyQUY9ewW27PWpyEcSwy+m rSQw== X-Forwarded-Encrypted: i=1; AJvYcCUUtPRJ+vNFF+IqUsLKjFSy62nzmlZpfpjz6ooY2mxTPe/NLbw8cF965lGrHokltQefngCIa7J5tg==@nongnu.org X-Gm-Message-State: AOJu0YwDlCFgWVltk2xwOYonw1qWUR8aYzuBAx8w5B3tgE3Ome42Hgad w6VkFvS5fA76M0y82r8G4CCQmXWTKXmpbTUhsJthU+fQIub02IzynDuTy3VNtmPBcCHRYOpmloy 50tuTAMG6Zgi24iwZgFnoeAR8RaF8HSi3ohyUh3Pv56IN8xp2IQ== X-Gm-Gg: ASbGncv1thi2dbRJGzlag22MRjc/bJ2M9OwSBcbRnzYs2u2wNlYqnUMrLMqkMi4lh4u EK5W/SHEjhgMZTH8tCPtrJoOJgMP5Wf3h0AUmf1soU/CaSg3N/rOy659AHoGIwCW8IpAs3epSaN XzIIbtDj9QSvTypPuokHcn9LDmPqIuibJDCqNTEcTkMSRcpF/xq0WPaLtUr2KEVZBN/nFis6059 7qZIO8lbv7SRdx0U693sr+L3v8q3kV7cvwEubBb/L8JdV5ye7+gJZfR8kTr+T17IO7ztITewo0s 8uXemNKlECZ3FXLlNJu5MZS5xC/vUtyU X-Received: by 2002:a05:6000:3113:b0:39c:1f0e:95af with SMTP id ffacd0b85a97d-3a1f64279d3mr3602035f8f.3.1746806656259; Fri, 09 May 2025 09:04:16 -0700 (PDT) X-Received: by 2002:a05:6000:3113:b0:39c:1f0e:95af with SMTP id ffacd0b85a97d-3a1f64279d3mr3601929f8f.3.1746806655504; Fri, 09 May 2025 09:04:15 -0700 (PDT) Received: from imammedo.users.ipa.redhat.com ([85.93.96.130]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a1f5a2d2d3sm3674769f8f.63.2025.05.09.09.04.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 May 2025 09:04:15 -0700 (PDT) Date: Fri, 9 May 2025 18:04:11 +0200 From: Igor Mammedov To: Philippe =?UTF-8?B?TWF0aGlldS1EYXVkw6k=?= Cc: qemu-devel@nongnu.org, Richard Henderson , kvm@vger.kernel.org, Sergio Lopez , Gerd Hoffmann , Peter Maydell , Laurent Vivier , Jiaxun Yang , Yi Liu , "Michael S. Tsirkin" , Eduardo Habkost , Marcel Apfelbaum , Alistair Francis , Daniel Henrique Barboza , Marcelo Tosatti , qemu-riscv@nongnu.org, Weiwei Li , Amit Shah , Zhao Liu , Yanan Wang , Helge Deller , Palmer Dabbelt , Ani Sinha , Fabiano Rosas , Paolo Bonzini , Liu Zhiwei , =?UTF-8?B?Q2zDqW1lbnQ=?= Mathieu--Drif , qemu-arm@nongnu.org, =?UTF-8?B?TWFyYy1BbmRyw6k=?= Lureau , Huacai Chen , Jason Wang , Thomas Huth Subject: Re: [PATCH v4 10/27] hw/i386/pc: Remove linuxboot.bin Message-ID: <20250509180411.10f6e683@imammedo.users.ipa.redhat.com> In-Reply-To: <20250508133550.81391-11-philmd@linaro.org> References: <20250508133550.81391-1-philmd@linaro.org> <20250508133550.81391-11-philmd@linaro.org> X-Mailer: Claws Mail 4.3.1 (GTK 3.24.43; x86_64-redhat-linux-gnu) MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: 4pNSxCsHeXJ2suIdjSL9MpyKK1XKohHPhNkOZnBRNFo_1746806656 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=170.10.129.124; envelope-from=imammedo@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.413, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, LOTS_OF_MONEY=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org Sender: qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org X-TUID: +EPvbgGO4tZX On Thu, 8 May 2025 15:35:33 +0200 Philippe Mathieu-Daud=C3=A9 wrote: > All PC machines now use the linuxboot_dma.bin binary, > we can remove the non-DMA version (linuxboot.bin). >=20 > Suggested-by: Thomas Huth > Signed-off-by: Philippe Mathieu-Daud=C3=A9 > --- > hw/i386/pc.c | 3 +- linuxboot.bin is referenced in a few more files: hw/i386/x86-common.c: option_rom[nb_option_roms].name =3D "linuxboot.bin= "; hw/nvram/fw_cfg.c: { "genroms/linuxboot.bin", 60 }, are you sure we should keep it there? > pc-bios/meson.build | 1 - > pc-bios/optionrom/Makefile | 2 +- > pc-bios/optionrom/linuxboot.S | 195 ---------------------------------- > 4 files changed, 2 insertions(+), 199 deletions(-) > delete mode 100644 pc-bios/optionrom/linuxboot.S >=20 > diff --git a/hw/i386/pc.c b/hw/i386/pc.c > index 524d2fd98e8..4e6fe68e2e0 100644 > --- a/hw/i386/pc.c > +++ b/hw/i386/pc.c > @@ -654,8 +654,7 @@ void xen_load_linux(PCMachineState *pcms) > =20 > x86_load_linux(x86ms, fw_cfg, PC_FW_DATA, pcmc->pvh_enabled); > for (i =3D 0; i < nb_option_roms; i++) { > - assert(!strcmp(option_rom[i].name, "linuxboot.bin") || > - !strcmp(option_rom[i].name, "linuxboot_dma.bin") || > + assert(!strcmp(option_rom[i].name, "linuxboot_dma.bin") || > !strcmp(option_rom[i].name, "pvh.bin") || > !strcmp(option_rom[i].name, "multiboot_dma.bin")); > rom_add_option(option_rom[i].name, option_rom[i].bootindex); > diff --git a/pc-bios/meson.build b/pc-bios/meson.build > index f2d4dc416a4..39a7fea332e 100644 > --- a/pc-bios/meson.build > +++ b/pc-bios/meson.build > @@ -63,7 +63,6 @@ blobs =3D [ > 'efi-vmxnet3.rom', > 'qemu-nsis.bmp', > 'multiboot_dma.bin', > - 'linuxboot.bin', > 'linuxboot_dma.bin', > 'kvmvapic.bin', > 'pvh.bin', > diff --git a/pc-bios/optionrom/Makefile b/pc-bios/optionrom/Makefile > index 1183ef88922..e694c7aac00 100644 > --- a/pc-bios/optionrom/Makefile > +++ b/pc-bios/optionrom/Makefile > @@ -2,7 +2,7 @@ include config.mak > SRC_DIR :=3D $(TOPSRC_DIR)/pc-bios/optionrom > VPATH =3D $(SRC_DIR) > =20 > -all: multiboot_dma.bin linuxboot.bin linuxboot_dma.bin kvmvapic.bin pvh.= bin > +all: multiboot_dma.bin linuxboot_dma.bin kvmvapic.bin pvh.bin > # Dummy command so that make thinks it has done something > =09@true > =20 > diff --git a/pc-bios/optionrom/linuxboot.S b/pc-bios/optionrom/linuxboot.= S > deleted file mode 100644 > index ba821ab922d..00000000000 > --- a/pc-bios/optionrom/linuxboot.S > +++ /dev/null > @@ -1,195 +0,0 @@ > -/* > - * Linux Boot Option ROM > - * > - * This program is free software; you can redistribute it and/or modify > - * it under the terms of the GNU General Public License as published by > - * the Free Software Foundation; either version 2 of the License, or > - * (at your option) any later version. > - * > - * This program is distributed in the hope that it will be useful, > - * but WITHOUT ANY WARRANTY; without even the implied warranty of > - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > - * GNU General Public License for more details. > - * > - * You should have received a copy of the GNU General Public License > - * along with this program; if not, see . > - * > - * Copyright Novell Inc, 2009 > - * Authors: Alexander Graf > - * > - * Based on code in hw/pc.c. > - */ > - > -#include "optionrom.h" > - > -#define BOOT_ROM_PRODUCT "Linux loader" > - > -BOOT_ROM_START > - > -run_linuxboot: > - > -=09cli > -=09cld > - > -=09jmp=09=09copy_kernel > -boot_kernel: > - > -=09read_fw=09=09FW_CFG_SETUP_ADDR > - > -=09mov=09=09%eax, %ebx > -=09shr=09=09$4, %ebx > - > -=09/* All segments contain real_addr */ > -=09mov=09=09%bx, %ds > -=09mov=09=09%bx, %es > -=09mov=09=09%bx, %fs > -=09mov=09=09%bx, %gs > -=09mov=09=09%bx, %ss > - > -=09/* CX =3D CS we want to jump to */ > -=09add=09=09$0x20, %bx > -=09mov=09=09%bx, %cx > - > -=09/* SP =3D cmdline_addr-real_addr-16 */ > -=09read_fw=09=09FW_CFG_CMDLINE_ADDR > -=09mov=09=09%eax, %ebx > -=09read_fw=09=09FW_CFG_SETUP_ADDR > -=09sub=09=09%eax, %ebx > -=09sub=09=09$16, %ebx > -=09mov=09=09%ebx, %esp > - > -=09/* Build indirect lret descriptor */ > -=09pushw=09=09%cx=09=09/* CS */ > -=09xor=09=09%ax, %ax > -=09pushw=09=09%ax=09=09/* IP =3D 0 */ > - > -=09/* Clear registers */ > -=09xor=09=09%eax, %eax > -=09xor=09=09%ebx, %ebx > -=09xor=09=09%ecx, %ecx > -=09xor=09=09%edx, %edx > -=09xor=09=09%edi, %edi > -=09xor=09=09%ebp, %ebp > - > -=09/* Jump to Linux */ > -=09lret > - > - > -copy_kernel: > -=09/* Read info block in low memory (0x10000 or 0x90000) */ > -=09read_fw=09=09FW_CFG_SETUP_ADDR > -=09shr=09=09$4, %eax > -=09mov=09=09%eax, %es > -=09xor=09=09%edi, %edi > -=09read_fw_blob_addr32_edi(FW_CFG_SETUP) > - > -=09cmpw $0x203, %es:0x206 // if protocol >=3D 0x203 > -=09jae 1f // have initrd_max > -=09movl $0x37ffffff, %es:0x22c // else assume 0x37ffffff > -1: > - > -=09/* Check if using kernel-specified initrd address */ > -=09read_fw=09=09FW_CFG_INITRD_ADDR > -=09mov=09=09%eax, %edi // (load_kernel wants it in %edi) > -=09read_fw=09=09FW_CFG_INITRD_SIZE // find end of initrd > -=09add=09=09%edi, %eax > -=09xor=09=09%es:0x22c, %eax // if it matches es:0x22c > -=09and=09=09$-4096, %eax // (apart from padding for page) > -=09jz=09=09load_kernel // then initrd is not at top > -=09=09=09=09=09 // of memory > - > -=09/* pc.c placed the initrd at end of memory. Compute a better > -=09 * initrd address based on e801 data. > -=09 */ > -=09mov=09=09$0xe801, %ax > -=09xor=09=09%cx, %cx > -=09xor=09=09%dx, %dx > -=09int=09=09$0x15 > - > -=09/* Output could be in AX/BX or CX/DX */ > -=09or=09=09%cx, %cx > -=09jnz=09=091f > -=09or=09=09%dx, %dx > -=09jnz=09=091f > -=09mov=09=09%ax, %cx > -=09mov=09=09%bx, %dx > -1: > - > -=09or=09=09%dx, %dx > -=09jnz=09=092f > -=09addw=09=09$1024, %cx /* add 1 MB */ > -=09movzwl=09=09%cx, %edi > -=09shll=09=09$10, %edi /* convert to bytes */ > -=09jmp=09=093f > - > -2: > -=09addw=09=09$16777216 >> 16, %dx /* add 16 MB */ > -=09movzwl=09=09%dx, %edi > -=09shll=09=09$16, %edi /* convert to bytes */ > - > -3: > -=09read_fw FW_CFG_INITRD_SIZE > -=09subl %eax, %edi > -=09andl $-4096, %edi /* EDI =3D start of initrd */ > -=09movl=09=09%edi, %es:0x218 /* put it in the header */ > - > -load_kernel: > -=09/* We need to load the kernel into memory we can't access in 16 bit > -=09 mode, so let's get into 32 bit mode, write the kernel and jump > -=09 back again. */ > - > -=09/* Reserve space on the stack for our GDT descriptor. */ > -=09mov %esp, %ebp > -=09sub $16, %esp > - > -=09/* Now create the GDT descriptor */ > -=09movw=09=09$((3 * 8) - 1), -16(%bp) > -=09mov=09=09%cs, %eax > -=09movzwl=09=09%ax, %eax > -=09shl=09=09$4, %eax > -=09addl=09=09$gdt, %eax > -=09movl=09=09%eax, -14(%bp) > - > -=09/* And load the GDT */ > -=09data32 lgdt=09-16(%bp) > -=09mov=09=09%ebp, %esp > - > -=09/* Get us to protected mode now */ > -=09mov=09=09$1, %eax > -=09mov=09=09%eax, %cr0 > - > -=09/* So we can set ES to a 32-bit segment */ > -=09mov=09=09$0x10, %eax > -=09mov=09=09%eax, %es > - > -=09/* We're now running in 16-bit CS, but 32-bit ES! */ > - > -=09/* Load kernel and initrd */ > -=09read_fw_blob_addr32_edi(FW_CFG_INITRD) > -=09read_fw_blob_addr32(FW_CFG_KERNEL) > -=09read_fw_blob_addr32(FW_CFG_CMDLINE) > - > -=09/* And now jump into Linux! */ > -=09mov=09=09$0, %eax > -=09mov=09=09%eax, %cr0 > - > -=09/* ES =3D CS */ > -=09mov=09=09%cs, %ax > -=09mov=09=09%ax, %es > - > -=09jmp=09=09boot_kernel > - > -/* Variables */ > - > -.align 4, 0 > -gdt: > -=09/* 0x00 */ > -.byte=090x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 > - > -=09/* 0x08: code segment (base=3D0, limit=3D0xfffff, type=3D32bit code e= xec/read, DPL=3D0, 4k) */ > -.byte=090xff, 0xff, 0x00, 0x00, 0x00, 0x9a, 0xcf, 0x00 > - > -=09/* 0x10: data segment (base=3D0, limit=3D0xfffff, type=3D32bit data r= ead/write, DPL=3D0, 4k) */ > -.byte=090xff, 0xff, 0x00, 0x00, 0x00, 0x92, 0xcf, 0x00 > - > -BOOT_ROM_END