92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
|
/*
|
||
|
|
* PowerPC CPU initialization for qemu.
|
||
|
|
*
|
||
|
|
* Copyright 2016, David Gibson, Red Hat Inc. <dgibson@redhat.com>
|
||
|
|
*
|
||
|
|
* This library is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU Lesser General Public
|
||
|
|
* License as published by the Free Software Foundation; either
|
||
|
|
* version 2 of the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This library is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
* Lesser General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Lesser General Public
|
||
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "qemu/osdep.h"
|
||
|
|
#include "sysemu/kvm.h"
|
||
|
|
#include "kvm_ppc.h"
|
||
|
|
#include "sysemu/cpus.h"
|
||
|
|
#include "qemu/error-report.h"
|
||
|
|
#include "qapi/error.h"
|
||
|
|
#include "cpu-models.h"
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
uint32_t pvr;
|
||
|
|
uint64_t pcr;
|
||
|
|
} CompatInfo;
|
||
|
|
|
||
|
|
static const CompatInfo compat_table[] = {
|
||
|
|
{ /* POWER6, ISA2.05 */
|
||
|
|
.pvr = CPU_POWERPC_LOGICAL_2_05,
|
||
|
|
.pcr = PCR_COMPAT_2_07 | PCR_COMPAT_2_06 | PCR_COMPAT_2_05
|
||
|
|
| PCR_TM_DIS | PCR_VSX_DIS,
|
||
|
|
},
|
||
|
|
{ /* POWER7, ISA2.06 */
|
||
|
|
.pvr = CPU_POWERPC_LOGICAL_2_06,
|
||
|
|
.pcr = PCR_COMPAT_2_07 | PCR_COMPAT_2_06 | PCR_TM_DIS,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.pvr = CPU_POWERPC_LOGICAL_2_06_PLUS,
|
||
|
|
.pcr = PCR_COMPAT_2_07 | PCR_COMPAT_2_06 | PCR_TM_DIS,
|
||
|
|
},
|
||
|
|
{ /* POWER8, ISA2.07 */
|
||
|
|
.pvr = CPU_POWERPC_LOGICAL_2_07,
|
||
|
|
.pcr = PCR_COMPAT_2_07,
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
static const CompatInfo *compat_by_pvr(uint32_t pvr)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(compat_table); i++) {
|
||
|
|
if (compat_table[i].pvr == pvr) {
|
||
|
|
return &compat_table[i];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
void ppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr, Error **errp)
|
||
|
|
{
|
||
|
|
const CompatInfo *compat = compat_by_pvr(compat_pvr);
|
||
|
|
CPUPPCState *env = &cpu->env;
|
||
|
|
PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
|
||
|
|
uint64_t pcr;
|
||
|
|
|
||
|
|
if (!compat_pvr) {
|
||
|
|
pcr = 0;
|
||
|
|
} else if (!compat) {
|
||
|
|
error_setg(errp, "Unknown compatibility PVR 0x%08"PRIx32, compat_pvr);
|
||
|
|
return;
|
||
|
|
} else {
|
||
|
|
pcr = compat->pcr;
|
||
|
|
}
|
||
|
|
|
||
|
|
cpu->compat_pvr = compat_pvr;
|
||
|
|
env->spr[SPR_PCR] = pcr & pcc->pcr_mask;
|
||
|
|
|
||
|
|
if (kvm_enabled()) {
|
||
|
|
int ret = kvmppc_set_compat(cpu, cpu->compat_pvr);
|
||
|
|
if (ret < 0) {
|
||
|
|
error_setg_errno(errp, -ret,
|
||
|
|
"Unable to set CPU compatibility mode in KVM");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|