include/asm-mips/mach-mips/kernel-entry-init.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Chris Dearman (chris@mips.com)
   7  * Copyright (C) 2007 Mips Technologies, Inc.
   8  */
   9 #ifndef __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H
  10 #define __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H
  11
  12         .macro  kernel_entry_setup
  13 #ifdef CONFIG_MIPS_MT_SMTC
  14         mfc0    t0, CP0_CONFIG
  15         bgez    t0, 9f
  16         mfc0    t0, CP0_CONFIG, 1
  17         bgez    t0, 9f
  18         mfc0    t0, CP0_CONFIG, 2
  19         bgez    t0, 9f
  20         mfc0    t0, CP0_CONFIG, 3
  21         and     t0, 1<<2
  22         bnez    t0, 0f
  23 9:
  24         /* Assume we came from YAMON... */
  25         PTR_LA  v0, 0x9fc00534  /* YAMON print */
  26         lw      v0, (v0)
  27         move    a0, zero
  28         PTR_LA  a1, nonmt_processor
  29         jal     v0
  30
  31         PTR_LA  v0, 0x9fc00520  /* YAMON exit */
  32         lw      v0, (v0)
  33         li      a0, 1
  34         jal     v0
  35
  36 1:      b       1b
  37
  38         __INITDATA
  39 nonmt_processor:
  40         .asciz  "SMTC kernel requires the MT ASE to run\n"
  41         __FINIT
  42 0:
  43 #endif
  44         .endm
  45
  46 /*
  47  * Do SMP slave processor setup necessary before we can safely execute C code.
  48  */
  49         .macro  smp_slave_setup
  50         .endm
  51
  52 #endif /* __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H */