[PATCH v4 5/6] hw/arm/aspeed_ast27x0.c Separate HW Strap Registers for SCU and SCUIO

[Jamin Lin via <qemu-arm@nongnu.org>]

There is one hw-strap1 register in the SCU (CPU DIE) and another hw-strap1
register in the SCUIO (IO DIE). The values of these two registers should not be
the same. To reuse the current design of hw-strap, hw-strap1 is assigned to the
SCU and sets the value in the SCU hw-strap1 register, while hw-strap2 is
assigned to the SCUIO and sets the value in the SCUIO hw-strap1 register.

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
---
 hw/arm/aspeed_ast27x0.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/hw/arm/aspeed_ast27x0.c b/hw/arm/aspeed_ast27x0.c
index a48f47b74e..8c225d4f90 100644
--- a/hw/arm/aspeed_ast27x0.c
+++ b/hw/arm/aspeed_ast27x0.c
@@ -331,16 +331,23 @@ static void aspeed_soc_ast2700_init(Object *obj)
     object_initialize_child(obj, "scu", &s->scu, TYPE_ASPEED_2700_SCU);
     qdev_prop_set_uint32(DEVICE(&s->scu), "silicon-rev",
                          sc->silicon_rev);
+    /*
+     * There is one hw-strap1 register in the SCU (CPU DIE) and another
+     * hw-strap1 register in the SCUIO (IO DIE). To reuse the current design
+     * of hw-strap, hw-strap1 is assigned to the SCU and sets the value in the
+     * SCU hw-strap1 register, while hw-strap2 is assigned to the SCUIO and
+     * sets the value in the SCUIO hw-strap1 register.
+     */
     object_property_add_alias(obj, "hw-strap1", OBJECT(&s->scu),
                               "hw-strap1");
-    object_property_add_alias(obj, "hw-strap2", OBJECT(&s->scu),
-                              "hw-strap2");
     object_property_add_alias(obj, "hw-prot-key", OBJECT(&s->scu),
                               "hw-prot-key");
 
     object_initialize_child(obj, "scuio", &s->scuio, TYPE_ASPEED_2700_SCUIO);
     qdev_prop_set_uint32(DEVICE(&s->scuio), "silicon-rev",
                          sc->silicon_rev);
+    object_property_add_alias(obj, "hw-strap2", OBJECT(&s->scuio),
+                                  "hw-strap1");
 
     snprintf(typename, sizeof(typename), "aspeed.fmc-%s", socname);
     object_initialize_child(obj, "fmc", &s->fmc, typename);
-- 
2.34.1