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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) 2013 Cavium, Inc
| */
| #ifndef __ASM_MACH_PARAVIRT_KERNEL_ENTRY_H
| #define __ASM_MACH_PARAVIRT_KERNEL_ENTRY_H
|
| #define CP0_EBASE $15, 1
|
| .macro kernel_entry_setup
| #ifdef CONFIG_SMP
| mfc0 t0, CP0_EBASE
| andi t0, t0, 0x3ff # CPUNum
| beqz t0, 1f
| # CPUs other than zero goto smp_bootstrap
| j smp_bootstrap
| #endif /* CONFIG_SMP */
|
| 1:
| .endm
|
| /*
| * Do SMP slave processor setup necessary before we can safely execute
| * C code.
| */
| .macro smp_slave_setup
| mfc0 t0, CP0_EBASE
| andi t0, t0, 0x3ff # CPUNum
| slti t1, t0, NR_CPUS
| bnez t1, 1f
| 2:
| di
| wait
| b 2b # Unknown CPU, loop forever.
| 1:
| PTR_LA t1, paravirt_smp_sp
| PTR_SLL t0, PTR_SCALESHIFT
| PTR_ADDU t1, t1, t0
| 3:
| PTR_L sp, 0(t1)
| beqz sp, 3b # Spin until told to proceed.
|
| PTR_LA t1, paravirt_smp_gp
| PTR_ADDU t1, t1, t0
| sync
| PTR_L gp, 0(t1)
| .endm
|
| #endif /* __ASM_MACH_PARAVIRT_KERNEL_ENTRY_H */
|
|
