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kernel add
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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 */
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