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spapr-rtas: add ibm, (get|set)-system-parameter

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This adds very basic handlers for ibm,get-system-parameter and
ibm,set-system-parameter RTAS calls.

The only parameter handled at the moment is
"platform-processor-diagnostics-run-mode" which is always disabled and
does not support changing. This is expected to make
"ppc64_cpu --run-mode=1" happy.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
[agraf: s/papameter/parameter/g]
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexey Kardashevskiy 2013-11-19 15:28:55 +11:00 committed by Alexander Graf
parent a64d325df1
commit 3ada6b1137
2 changed files with 49 additions and 0 deletions
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47
hw/ppc/spapr_rtas.c
View file

@ -224,6 +224,49 @@ static void rtas_stop_self(PowerPCCPU *cpu, sPAPREnvironment *spapr,
env->msr = 0;
}
#define DIAGNOSTICS_RUN_MODE 42
static void rtas_ibm_get_system_parameter(PowerPCCPU *cpu,
sPAPREnvironment *spapr,
uint32_t token, uint32_t nargs,
target_ulong args,
uint32_t nret, target_ulong rets)
{
target_ulong parameter = rtas_ld(args, 0);
target_ulong buffer = rtas_ld(args, 1);
target_ulong length = rtas_ld(args, 2);
target_ulong ret = RTAS_OUT_NOT_SUPPORTED;
switch (parameter) {
case DIAGNOSTICS_RUN_MODE:
if (length == 1) {
rtas_st(buffer, 0, 0);
ret = RTAS_OUT_SUCCESS;
}
break;
}
rtas_st(rets, 0, ret);
}
static void rtas_ibm_set_system_parameter(PowerPCCPU *cpu,
sPAPREnvironment *spapr,
uint32_t token, uint32_t nargs,
target_ulong args,
uint32_t nret, target_ulong rets)
{
target_ulong parameter = rtas_ld(args, 0);
target_ulong ret = RTAS_OUT_NOT_SUPPORTED;
switch (parameter) {
case DIAGNOSTICS_RUN_MODE:
ret = RTAS_OUT_NOT_AUTHORIZED;
break;
}
rtas_st(rets, 0, ret);
}
static struct rtas_call {
const char *name;
spapr_rtas_fn fn;
@ -345,6 +388,10 @@ static void core_rtas_register_types(void)
rtas_query_cpu_stopped_state);
spapr_rtas_register("start-cpu", rtas_start_cpu);
spapr_rtas_register("stop-self", rtas_stop_self);
spapr_rtas_register("ibm,get-system-parameter",
rtas_ibm_get_system_parameter);
spapr_rtas_register("ibm,set-system-parameter",
rtas_ibm_set_system_parameter);
}
type_init(core_rtas_register_types)

2
include/hw/ppc/spapr.h
View file

@ -338,6 +338,8 @@ static inline int spapr_allocate_lsi(int hint)
#define RTAS_OUT_HW_ERROR -1
#define RTAS_OUT_BUSY -2
#define RTAS_OUT_PARAM_ERROR -3
#define RTAS_OUT_NOT_SUPPORTED -3
#define RTAS_OUT_NOT_AUTHORIZED -9002
static inline uint64_t ppc64_phys_to_real(uint64_t addr)
{