| /* |
| * 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 */ |
