62 lines
1.5 KiB
ArmAsm
62 lines
1.5 KiB
ArmAsm
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2012 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define SYSCALL_WRITE 4
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#define SYSCALL_RESET 88
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#define SYSCALL_EXIT 1
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#define STDOUT 1
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#define SHUTDOWN_MAGIC1 0xfee1dead
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#define SHUTDOWN_MAGIC2 0x28121969
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#define SHUTDOWN_MAGIC3 0x4321fedc
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.text
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.global start, _start, __start
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__start:
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_start:
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start:
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/* write. */
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li %r0, SYSCALL_WRITE
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li %r3, STDOUT
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lis %r4, message@h
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ori %r4, %r4, message@l
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lis %r5, messageend@h
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ori %r5, %r5, messageend@l
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sub %r5, %r5, %r4
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sc
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/* shutdown. */
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li %r0, SYSCALL_RESET
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lis %r3, SHUTDOWN_MAGIC1@h
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ori %r3, %r3, SHUTDOWN_MAGIC1@l
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lis %r4, SHUTDOWN_MAGIC2@h
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ori %r4, %r4, SHUTDOWN_MAGIC2@l
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lis %r5, SHUTDOWN_MAGIC3@h
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ori %r5, %r5, SHUTDOWN_MAGIC3@l
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sc
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/* exit(1). Shouldn't be reached. */
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li %r0, SYSCALL_EXIT
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li %r3, 1
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sc
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.data
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message:
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.ascii "Boot Test Passed Successfully\n" SUCCESSFUL_BOOT_STRING "\n"
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messageend:
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