ast2400: Integrate the SCU model and set silicon revision

By specifying the silicon revision we select the appropriate reset
values for the SoC.

Additionally, expose hardware strapping properties aliasing those
provided by the SCU for board-specific configuration.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1466744305-23163-3-git-send-email-andrew@aj.id.au
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/arm/ast2400.c

@@ -24,9 +24,12 @@
 #define AST2400_IOMEM_SIZE       0x00200000
 #define AST2400_IOMEM_BASE       0x1E600000
 #define AST2400_VIC_BASE         0x1E6C0000
+#define AST2400_SCU_BASE         0x1E6E2000
 #define AST2400_TIMER_BASE       0x1E782000
 #define AST2400_I2C_BASE         0x1E78A000
 
+#define AST2400_A0_SILICON_REV   0x02000303
+
 static const int uart_irqs[] = { 9, 32, 33, 34, 10 };
 static const int timer_irqs[] = { 16, 17, 18, 35, 36, 37, 38, 39, };
 
@@ -72,6 +75,16 @@ static void ast2400_init(Object *obj)
     object_initialize(&s->i2c, sizeof(s->i2c), TYPE_ASPEED_I2C);
     object_property_add_child(obj, "i2c", OBJECT(&s->i2c), NULL);
     qdev_set_parent_bus(DEVICE(&s->i2c), sysbus_get_default());
+
+    object_initialize(&s->scu, sizeof(s->scu), TYPE_ASPEED_SCU);
+    object_property_add_child(obj, "scu", OBJECT(&s->scu), NULL);
+    qdev_set_parent_bus(DEVICE(&s->scu), sysbus_get_default());
+    qdev_prop_set_uint32(DEVICE(&s->scu), "silicon-rev",
+                         AST2400_A0_SILICON_REV);
+    object_property_add_alias(obj, "hw-strap1", OBJECT(&s->scu),
+                              "hw-strap1", &error_abort);
+    object_property_add_alias(obj, "hw-strap2", OBJECT(&s->scu),
+                              "hw-strap2", &error_abort);
 }
 
 static void ast2400_realize(DeviceState *dev, Error **errp)
@@ -110,6 +123,14 @@ static void ast2400_realize(DeviceState *dev, Error **errp)
         sysbus_connect_irq(SYS_BUS_DEVICE(&s->timerctrl), i, irq);
     }
 
+    /* SCU */
+    object_property_set_bool(OBJECT(&s->scu), true, "realized", &err);
+    if (err) {
+        error_propagate(errp, err);
+        return;
+    }
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->scu), 0, AST2400_SCU_BASE);
+
     /* UART - attach an 8250 to the IO space as our UART5 */
     if (serial_hds[0]) {
         qemu_irq uart5 = qdev_get_gpio_in(DEVICE(&s->vic), uart_irqs[4]);

include/hw/arm/ast2400.h

@@ -14,6 +14,7 @@
 
 #include "hw/arm/arm.h"
 #include "hw/intc/aspeed_vic.h"
+#include "hw/misc/aspeed_scu.h"
 #include "hw/timer/aspeed_timer.h"
 #include "hw/i2c/aspeed_i2c.h"
 
@@ -27,6 +28,7 @@ typedef struct AST2400State {
     AspeedVICState vic;
     AspeedTimerCtrlState timerctrl;
     AspeedI2CState i2c;
+    AspeedSCUState scu;
 } AST2400State;
 
 #define TYPE_AST2400 "ast2400"