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[MIPS] Early check for SMTC kernel on non-MT processor

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Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Chris Dearman 2007-07-06 17:11:20 +01:00 committed by Ralf Baechle
parent 83fd38cabc
commit ecd27b92fb
1 changed files with 52 additions and 0 deletions
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52
include/asm-mips/mach-mips/kernel-entry-init.h Normal file
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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Chris Dearman (chris@mips.com)
* Copyright (C) 2007 Mips Technologies, Inc.
*/
#ifndef __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H
#define __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H
.macro kernel_entry_setup
#ifdef CONFIG_MIPS_MT_SMTC
mfc0 t0, CP0_CONFIG
bgez t0, 9f
mfc0 t0, CP0_CONFIG, 1
bgez t0, 9f
mfc0 t0, CP0_CONFIG, 2
bgez t0, 9f
mfc0 t0, CP0_CONFIG, 3
and t0, 1<<2
bnez t0, 0f
9:
/* Assume we came from YAMON... */
PTR_LA v0, 0x9fc00534 /* YAMON print */
lw v0, (v0)
move a0, zero
PTR_LA a1, nonmt_processor
jal v0
PTR_LA v0, 0x9fc00520 /* YAMON exit */
lw v0, (v0)
li a0, 1
jal v0
1: b 1b
__INITDATA
nonmt_processor:
.asciz "SMTC kernel requires the MT ASE to run\n"
__FINIT
0:
#endif
.endm
/*
* Do SMP slave processor setup necessary before we can safely execute C code.
*/
.macro smp_slave_setup
.endm
#endif /* __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H */