diff options
| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2013-11-19 15:28:55 +1100 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-12-20 01:57:59 +0100 |
| commit | 3ada6b113726ae554154f6e5367bf4b4ed110bbe (patch) | |
| tree | 1ccd34c7992cfefaaf88ba2c6b00469cae1128f0 /hw/ppc/spapr_rtas.c | |
| parent | a64d325df1ce9b554e15d612b80775159cc4d7a6 (diff) | |
spapr-rtas: add ibm, (get|set)-system-parameter
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>
Diffstat (limited to 'hw/ppc/spapr_rtas.c')
| -rw-r--r-- | hw/ppc/spapr_rtas.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c index f9897a5d8e..6149907645 100644 --- a/hw/ppc/spapr_rtas.c +++ b/hw/ppc/spapr_rtas.c @@ -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) |