hw/misc/iotkit-sysinfo.c: Implement SSE-300 PID register values

The version of the SYSINFO Register Block in the SSE-300 has
different CIDR/PIDR register values to the SSE-200; pass in
the sse-version property and use it to select the correct
ID register values.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210219144617.4782-9-peter.maydell@linaro.org

1 files changed, 27 insertions, 2 deletions

diff --git a/hw/misc/iotkit-sysinfo.c b/hw/misc/iotkit-sysinfo.c
index 52e70053df..4bd3fd4c8f 100644
--- a/hw/misc/iotkit-sysinfo.c
+++ b/hw/misc/iotkit-sysinfo.c
@@ -26,6 +26,7 @@
 #include "hw/registerfields.h"
 #include "hw/misc/iotkit-sysinfo.h"
 #include "hw/qdev-properties.h"
+#include "hw/arm/armsse-version.h"
 
 REG32(SYS_VERSION, 0x0)
 REG32(SYS_CONFIG, 0x4)
@@ -49,6 +50,12 @@ static const int sysinfo_id[] = {
     0x0d, 0xf0, 0x05, 0xb1, /* CID0..CID3 */
 };
 
+static const int sysinfo_sse300_id[] = {
+    0x04, 0x00, 0x00, 0x00, /* PID4..PID7 */
+    0x58, 0xb8, 0x1b, 0x00, /* PID0..PID3 */
+    0x0d, 0xf0, 0x05, 0xb1, /* CID0..CID3 */
+};
+
 static uint64_t iotkit_sysinfo_read(void *opaque, hwaddr offset,
                                     unsigned size)
 {
@@ -64,7 +71,14 @@ static uint64_t iotkit_sysinfo_read(void *opaque, hwaddr offset,
         r = s->sys_config;
         break;
     case A_PID4 ... A_CID3:
-        r = sysinfo_id[(offset - A_PID4) / 4];
+        switch (s->sse_version) {
+        case ARMSSE_SSE300:
+            r = sysinfo_sse300_id[(offset - A_PID4) / 4];
+            break;
+        default:
+            r = sysinfo_id[(offset - A_PID4) / 4];
+            break;
+        }
         break;
     default:
         qemu_log_mask(LOG_GUEST_ERROR,
@@ -99,6 +113,7 @@ static const MemoryRegionOps iotkit_sysinfo_ops = {
 static Property iotkit_sysinfo_props[] = {
     DEFINE_PROP_UINT32("SYS_VERSION", IoTKitSysInfo, sys_version, 0),
     DEFINE_PROP_UINT32("SYS_CONFIG", IoTKitSysInfo, sys_config, 0),
+    DEFINE_PROP_UINT32("sse-version", IoTKitSysInfo, sse_version, 0),
     DEFINE_PROP_END_OF_LIST()
 };
 
@@ -112,6 +127,16 @@ static void iotkit_sysinfo_init(Object *obj)
     sysbus_init_mmio(sbd, &s->iomem);
 }
 
+static void iotkit_sysinfo_realize(DeviceState *dev, Error **errp)
+{
+    IoTKitSysInfo *s = IOTKIT_SYSINFO(dev);
+
+    if (!armsse_version_valid(s->sse_version)) {
+        error_setg(errp, "invalid sse-version value %d", s->sse_version);
+        return;
+    }
+}
+
 static void iotkit_sysinfo_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -120,7 +145,7 @@ static void iotkit_sysinfo_class_init(ObjectClass *klass, void *data)
      * This device has no guest-modifiable state and so it
      * does not need a reset function or VMState.
      */
-
+    dc->realize = iotkit_sysinfo_realize;
     device_class_set_props(dc, iotkit_sysinfo_props);
 }