forked from Minki/linux
dce623e082
Move all the pseries kexec code into one file, platforms/pseries/kexec.c Provide helpers for setting up ppc_md.kexec_cpu_down, so that we don't have to have #ifdef CONFIG_KEXEC in setup.c Move the initialisation of the ppc_md kexec callbacks into an init routine. This is well and truly early enough to cause no change in behaviour, we can't kexec until userspace has given us a kernel to kexec into. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
|
|
* Copyright 2006 Michael Ellerman, IBM Corporation
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <asm/machdep.h>
|
|
#include <asm/page.h>
|
|
#include <asm/firmware.h>
|
|
#include <asm/kexec.h>
|
|
#include <asm/mpic.h>
|
|
|
|
#include "pseries.h"
|
|
#include "xics.h"
|
|
#include "plpar_wrappers.h"
|
|
|
|
static void pseries_kexec_cpu_down(int crash_shutdown, int secondary)
|
|
{
|
|
/* Don't risk a hypervisor call if we're crashing */
|
|
if (firmware_has_feature(FW_FEATURE_SPLPAR) && !crash_shutdown) {
|
|
unsigned long addr;
|
|
|
|
addr = __pa(get_slb_shadow());
|
|
if (unregister_slb_shadow(hard_smp_processor_id(), addr))
|
|
printk("SLB shadow buffer deregistration of "
|
|
"cpu %u (hw_cpu_id %d) failed\n",
|
|
smp_processor_id(),
|
|
hard_smp_processor_id());
|
|
|
|
addr = __pa(get_lppaca());
|
|
if (unregister_vpa(hard_smp_processor_id(), addr)) {
|
|
printk("VPA deregistration of cpu %u (hw_cpu_id %d) "
|
|
"failed\n", smp_processor_id(),
|
|
hard_smp_processor_id());
|
|
}
|
|
}
|
|
}
|
|
|
|
static void pseries_kexec_cpu_down_mpic(int crash_shutdown, int secondary)
|
|
{
|
|
pseries_kexec_cpu_down(crash_shutdown, secondary);
|
|
mpic_teardown_this_cpu(secondary);
|
|
}
|
|
|
|
void __init setup_kexec_cpu_down_mpic(void)
|
|
{
|
|
ppc_md.kexec_cpu_down = pseries_kexec_cpu_down_mpic;
|
|
}
|
|
|
|
static void pseries_kexec_cpu_down_xics(int crash_shutdown, int secondary)
|
|
{
|
|
pseries_kexec_cpu_down(crash_shutdown, secondary);
|
|
xics_teardown_cpu(secondary);
|
|
}
|
|
|
|
void __init setup_kexec_cpu_down_xics(void)
|
|
{
|
|
ppc_md.kexec_cpu_down = pseries_kexec_cpu_down_xics;
|
|
}
|
|
|
|
static int __init pseries_kexec_setup(void)
|
|
{
|
|
ppc_md.machine_kexec = default_machine_kexec;
|
|
ppc_md.machine_kexec_prepare = default_machine_kexec_prepare;
|
|
ppc_md.machine_crash_shutdown = default_machine_crash_shutdown;
|
|
|
|
return 0;
|
|
}
|
|
__initcall(pseries_kexec_setup);
|