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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.
| *
| * Copyright (C) 2005 Embedded Alley Solutions, Inc
| * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
| * Copyright (C) 2009 Jiajie Chen (chenjiajie@cse.buaa.edu.cn)
| * Copyright (C) 2012 Huacai Chen (chenhc@lemote.com)
| */
| #ifndef __ASM_MACH_LOONGSON64_KERNEL_ENTRY_H
| #define __ASM_MACH_LOONGSON64_KERNEL_ENTRY_H
|
| #include <asm/cpu.h>
|
| /*
| * Override macros used in arch/mips/kernel/head.S.
| */
| .macro kernel_entry_setup
| .set push
| .set mips64
| /* Set LPA on LOONGSON3 config3 */
| mfc0 t0, CP0_CONFIG3
| or t0, (0x1 << 7)
| mtc0 t0, CP0_CONFIG3
| /* Set ELPA on LOONGSON3 pagegrain */
| mfc0 t0, CP0_PAGEGRAIN
| or t0, (0x1 << 29)
| mtc0 t0, CP0_PAGEGRAIN
| /* Enable STFill Buffer */
| mfc0 t0, CP0_PRID
| /* Loongson-3A R4+ */
| andi t1, t0, PRID_IMP_MASK
| li t2, PRID_IMP_LOONGSON_64G
| beq t1, t2, 1f
| nop
| /* Loongson-3A R2/R3 */
| andi t0, (PRID_IMP_MASK | PRID_REV_MASK)
| slti t0, t0, (PRID_IMP_LOONGSON_64C | PRID_REV_LOONGSON3A_R2_0)
| bnez t0, 2f
| nop
| 1:
| mfc0 t0, CP0_CONFIG6
| or t0, 0x100
| mtc0 t0, CP0_CONFIG6
| 2:
| _ehb
| .set pop
| .endm
|
| /*
| * Do SMP slave processor setup.
| */
| .macro smp_slave_setup
| .set push
| .set mips64
| /* Set LPA on LOONGSON3 config3 */
| mfc0 t0, CP0_CONFIG3
| or t0, (0x1 << 7)
| mtc0 t0, CP0_CONFIG3
| /* Set ELPA on LOONGSON3 pagegrain */
| mfc0 t0, CP0_PAGEGRAIN
| or t0, (0x1 << 29)
| mtc0 t0, CP0_PAGEGRAIN
| /* Enable STFill Buffer */
| mfc0 t0, CP0_PRID
| /* Loongson-3A R4+ */
| andi t1, t0, PRID_IMP_MASK
| li t2, PRID_IMP_LOONGSON_64G
| beq t1, t2, 1f
| nop
| /* Loongson-3A R2/R3 */
| andi t0, (PRID_IMP_MASK | PRID_REV_MASK)
| slti t0, t0, (PRID_IMP_LOONGSON_64C | PRID_REV_LOONGSON3A_R2_0)
| bnez t0, 2f
| nop
| 1:
| mfc0 t0, CP0_CONFIG6
| or t0, 0x100
| mtc0 t0, CP0_CONFIG6
| 2:
| _ehb
| .set pop
| .endm
|
| #endif /* __ASM_MACH_LOONGSON64_KERNEL_ENTRY_H */
|
|
