74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/*
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* Copyright 2006 Michael Ellerman, IBM Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <asm/machdep.h>
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#include <asm/page.h>
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#include <asm/firmware.h>
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#include <asm/kexec.h>
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#include <asm/mpic.h>
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#include <asm/smp.h>
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#include "pseries.h"
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#include "xics.h"
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#include "plpar_wrappers.h"
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static void pseries_kexec_cpu_down(int crash_shutdown, int secondary)
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{
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/* Don't risk a hypervisor call if we're crashing */
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if (firmware_has_feature(FW_FEATURE_SPLPAR) && !crash_shutdown) {
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unsigned long addr;
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addr = __pa(get_slb_shadow());
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if (unregister_slb_shadow(hard_smp_processor_id(), addr))
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printk("SLB shadow buffer deregistration of "
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"cpu %u (hw_cpu_id %d) failed\n",
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smp_processor_id(),
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hard_smp_processor_id());
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addr = __pa(get_lppaca());
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if (unregister_vpa(hard_smp_processor_id(), addr)) {
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printk("VPA deregistration of cpu %u (hw_cpu_id %d) "
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"failed\n", smp_processor_id(),
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hard_smp_processor_id());
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}
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}
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}
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static void pseries_kexec_cpu_down_mpic(int crash_shutdown, int secondary)
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{
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pseries_kexec_cpu_down(crash_shutdown, secondary);
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mpic_teardown_this_cpu(secondary);
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}
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void __init setup_kexec_cpu_down_mpic(void)
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{
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ppc_md.kexec_cpu_down = pseries_kexec_cpu_down_mpic;
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}
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static void pseries_kexec_cpu_down_xics(int crash_shutdown, int secondary)
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{
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pseries_kexec_cpu_down(crash_shutdown, secondary);
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xics_kexec_teardown_cpu(secondary);
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}
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void __init setup_kexec_cpu_down_xics(void)
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{
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ppc_md.kexec_cpu_down = pseries_kexec_cpu_down_xics;
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}
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static int __init pseries_kexec_setup(void)
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{
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ppc_md.machine_kexec = default_machine_kexec;
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ppc_md.machine_kexec_prepare = default_machine_kexec_prepare;
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ppc_md.machine_crash_shutdown = default_machine_crash_shutdown;
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return 0;
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}
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machine_device_initcall(pseries, pseries_kexec_setup);
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