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authorAlexey Kardashevskiy <aik@ozlabs.ru>2013-11-19 15:28:55 +1100
committerAlexander Graf <agraf@suse.de>2013-12-20 01:57:59 +0100
commit3ada6b113726ae554154f6e5367bf4b4ed110bbe (patch)
tree1ccd34c7992cfefaaf88ba2c6b00469cae1128f0
parenta64d325df1ce9b554e15d612b80775159cc4d7a6 (diff)
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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>
-rw-r--r--hw/ppc/spapr_rtas.c47
-rw-r--r--include/hw/ppc/spapr.h2
2 files changed, 49 insertions, 0 deletions
diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c
index f9897a5..6149907 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)
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index 085cfa7..b2f11e9 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -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)
{