814ae3b055
This moves the multiboot header into its own include file, simplifying head.S and making it easier to include/exclude the multiboot header based on config options. BUG=b:242829490 TEST=Able to build and boot google/rex. Change-Id: I59a22dfe36044b4dd64a5b028a134be7a7d02a48 Signed-off-by: Subrata Banik <subratabanik@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/82533 Reviewed-by: Julius Werner <jwerner@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
55 lines
2.0 KiB
PHP
55 lines
2.0 KiB
PHP
/*
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*
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* Copyright (C) 2008 Advanced Micro Devices, Inc.
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* Copyright (C) 2017 Patrick Rudolph <siro@das-labor.org>
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* Copyright (C) 2024 Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#define MB_MAGIC 0x1BADB002
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#define MB_FLAGS 0x00010003
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jmp _init
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/*
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* Note: The Multiboot standard requires Multiboot header to be placed
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* below 0x2000 in the resulting image. See:
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* http://www.gnu.org/software/grub/manual/multiboot/html_node/OS-image-format.html
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*/
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mb_header:
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.long MB_MAGIC
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.long MB_FLAGS
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.long -(MB_MAGIC + MB_FLAGS)
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.long mb_header
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.long _start
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.long _edata
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.long _end
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.long _init
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_init:
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/* Store EAX and EBX */
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movl %eax, loader_eax
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movl %ebx, loader_ebx
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