arch/mips/include/asm/mach-loongson64/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  * Copyright (C) 2005 Embedded Alley Solutions, Inc
   7  * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
   8  * Copyright (C) 2009 Jiajie Chen (chenjiajie@cse.buaa.edu.cn)
   9  * Copyright (C) 2012 Huacai Chen (chenhc@lemote.com)
  10  */
  11 #ifndef __ASM_MACH_LOONGSON64_KERNEL_ENTRY_H
  12 #define __ASM_MACH_LOONGSON64_KERNEL_ENTRY_H
  13
  14 /*
  15  * Override macros used in arch/mips/kernel/head.S.
  16  */
  17         .macro  kernel_entry_setup
  18 #ifdef CONFIG_CPU_LOONGSON3
  19         .set    push
  20         .set    mips64
  21         /* Set LPA on LOONGSON3 config3 */
  22         mfc0    t0, $16, 3
  23         or      t0, (0x1 << 7)
  24         mtc0    t0, $16, 3
  25         /* Set ELPA on LOONGSON3 pagegrain */
  26         mfc0    t0, $5, 1
  27         or      t0, (0x1 << 29)
  28         mtc0    t0, $5, 1
  29 #ifdef CONFIG_LOONGSON3_ENHANCEMENT
  30         /* Enable STFill Buffer */
  31         mfc0    t0, $16, 6
  32         or      t0, 0x100
  33         mtc0    t0, $16, 6
  34 #endif
  35         _ehb
  36         .set    pop
  37 #endif
  38         .endm
  39
  40 /*
  41  * Do SMP slave processor setup.
  42  */
  43         .macro  smp_slave_setup
  44 #ifdef CONFIG_CPU_LOONGSON3
  45         .set    push
  46         .set    mips64
  47         /* Set LPA on LOONGSON3 config3 */
  48         mfc0    t0, $16, 3
  49         or      t0, (0x1 << 7)
  50         mtc0    t0, $16, 3
  51         /* Set ELPA on LOONGSON3 pagegrain */
  52         mfc0    t0, $5, 1
  53         or      t0, (0x1 << 29)
  54         mtc0    t0, $5, 1
  55 #ifdef CONFIG_LOONGSON3_ENHANCEMENT
  56         /* Enable STFill Buffer */
  57         mfc0    t0, $16, 6
  58         or      t0, 0x100
  59         mtc0    t0, $16, 6
  60 #endif
  61         _ehb
  62         .set    pop
  63 #endif
  64         .endm
  65
  66 #endif /* __ASM_MACH_LOONGSON64_KERNEL_ENTRY_H */