[Qemu-devel] [RFC PATCH v1 6/7] zynq_slcr: Add links to the CPUs

[Peter Crosthwaite]

From: Peter A. G. Crosthwaite <address@hidden>

The SLCR needs to be able to reset the CPUs, so link the CPUs to the slcr.

Signed-off-by: Peter A. G. Crosthwaite <address@hidden>
---
Changed from v2:
Soften type of CPU to Device
Looped link creator

 hw/xilinx_zynq.c |    7 +++++++
 hw/zynq_slcr.c   |   11 +++++++++++
 2 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/hw/xilinx_zynq.c b/hw/xilinx_zynq.c
index 80a2777..9be2b3b 100644
--- a/hw/xilinx_zynq.c
+++ b/hw/xilinx_zynq.c
@@ -179,6 +179,13 @@ static void zynq_init(QEMUMachineInitArgs *args)
 
     dev = qdev_create(NULL, "xilinx,zynq_slcr");
     qdev_init_nofail(dev);
+    Error *errp = NULL;
+    object_property_set_link(OBJECT(dev), OBJECT(cpus[0]), "cpu0", &errp);
+    assert_no_error(errp);
+    if (smp_cpus > 1) {
+        object_property_set_link(OBJECT(dev), OBJECT(cpus[1]), "cpu1", NULL);
+        assert_no_error(errp);
+    }
     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xF8000000);
 
     dev = qdev_create(NULL, "a9mpcore_priv");
diff --git a/hw/zynq_slcr.c b/hw/zynq_slcr.c
index 27b00f0..4925358 100644
--- a/hw/zynq_slcr.c
+++ b/hw/zynq_slcr.c
@@ -19,6 +19,8 @@
 #include "sysbus.h"
 #include "sysemu/sysemu.h"
 
+#define NUM_CPUS 2
+
 #ifdef ZYNQ_ARM_SLCR_ERR_DEBUG
 #define DB_PRINT(...) do { \
     fprintf(stderr,  ": %s: ", __func__); \
@@ -118,6 +120,8 @@ typedef struct {
     SysBusDevice busdev;
     MemoryRegion iomem;
 
+    DeviceState *cpus[NUM_CPUS];
+
     union {
         struct {
             uint16_t scl;
@@ -492,11 +496,18 @@ static const MemoryRegionOps slcr_ops = {
 
 static int zynq_slcr_init(SysBusDevice *dev)
 {
+    int i;
     ZynqSLCRState *s = FROM_SYSBUS(ZynqSLCRState, dev);
 
     memory_region_init_io(&s->iomem, &slcr_ops, s, "slcr", 0x1000);
     sysbus_init_mmio(dev, &s->iomem);
 
+    for (i = 0; i < NUM_CPUS; ++i) {
+        gchar *name = g_strdup_printf("cpu%d", i);
+        object_property_add_link(OBJECT(dev), name, TYPE_DEVICE,
+                                 (Object **) &s->cpus[i], NULL);
+        g_free(name);
+    }
     return 0;
 }
 
-- 
1.7.0.4