hw/mips/cps: Set the vCPU 'cpu-big-endian' property

Have the CPS expose a 'cpu-big-endian' property so it can
set it to the vCPUs it creates.
Note, since the number of vCPUs created is dynamic, we can
not use QOM aliases.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241010215015.44326-16-philmd@linaro.org>

hw/mips/cps.c

@@ -77,6 +77,9 @@ static void mips_cps_realize(DeviceState *dev, Error **errp)
         MIPSCPU *cpu = MIPS_CPU(object_new(s->cpu_type));
         CPUMIPSState *env = &cpu->env;
 
+        object_property_set_bool(OBJECT(cpu), "big-endian", s->cpu_is_bigendian,
+                                 &error_abort);
+
         /* All VPs are halted on reset. Leave powering up to CPC. */
         object_property_set_bool(OBJECT(cpu), "start-powered-off", true,
                                  &error_abort);
@@ -167,6 +170,7 @@ static Property mips_cps_properties[] = {
     DEFINE_PROP_UINT32("num-vp", MIPSCPSState, num_vp, 1),
     DEFINE_PROP_UINT32("num-irq", MIPSCPSState, num_irq, 256),
     DEFINE_PROP_STRING("cpu-type", MIPSCPSState, cpu_type),
+    DEFINE_PROP_BOOL("cpu-big-endian", MIPSCPSState, cpu_is_bigendian, false),
     DEFINE_PROP_END_OF_LIST()
 };
 

hw/mips/malta.c

@@ -1054,6 +1054,8 @@ static void create_cps(MachineState *ms, MaltaState *s,
     object_initialize_child(OBJECT(s), "cps", &s->cps, TYPE_MIPS_CPS);
     object_property_set_str(OBJECT(&s->cps), "cpu-type", ms->cpu_type,
                             &error_fatal);
+    object_property_set_bool(OBJECT(&s->cps), "cpu-big-endian",
+                             TARGET_BIG_ENDIAN, &error_abort);
     object_property_set_uint(OBJECT(&s->cps), "num-vp", ms->smp.cpus,
                             &error_fatal);
     qdev_connect_clock_in(DEVICE(&s->cps), "clk-in", s->cpuclk);

include/hw/mips/cps.h

@@ -38,6 +38,7 @@ struct MIPSCPSState {
     uint32_t num_vp;
     uint32_t num_irq;
     char *cpu_type;
+    bool cpu_is_bigendian;
 
     MemoryRegion container;
     MIPSGCRState gcr;