hw/arm/nrf51: Add NRF51_PERIPHERAL_SIZE definition

On the NRF51 series, all peripherals have a fixed I/O size
of 4KiB. Define NRF51_PERIPHERAL_SIZE and use it.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200504072822.18799-2-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/arm/nrf51_soc.c

@@ -156,7 +156,7 @@ static void nrf51_soc_realize(DeviceState *dev_soc, Error **errp)
             return;
         }
 
-        base_addr = NRF51_TIMER_BASE + i * NRF51_TIMER_SIZE;
+        base_addr = NRF51_TIMER_BASE + i * NRF51_PERIPHERAL_SIZE;
 
         sysbus_mmio_map(SYS_BUS_DEVICE(&s->timer[i]), 0, base_addr);
         sysbus_connect_irq(SYS_BUS_DEVICE(&s->timer[i]), 0,
@@ -166,7 +166,7 @@ static void nrf51_soc_realize(DeviceState *dev_soc, Error **errp)
 
     /* STUB Peripherals */
     memory_region_init_io(&s->clock, OBJECT(dev_soc), &clock_ops, NULL,
-                          "nrf51_soc.clock", 0x1000);
+                          "nrf51_soc.clock", NRF51_PERIPHERAL_SIZE);
     memory_region_add_subregion_overlap(&s->container,
                                         NRF51_IOMEM_BASE, &s->clock, -1);
 

hw/i2c/microbit_i2c.c

@@ -100,7 +100,7 @@ static void microbit_i2c_realize(DeviceState *dev, Error **errp)
     MicrobitI2CState *s = MICROBIT_I2C(dev);
 
     memory_region_init_io(&s->iomem, OBJECT(s), &microbit_i2c_ops, s,
-                          "microbit.twi", NRF51_TWI_SIZE);
+                          "microbit.twi", NRF51_PERIPHERAL_SIZE);
     sysbus_init_mmio(sbd, &s->iomem);
 }
 

hw/timer/nrf51_timer.c

@@ -313,7 +313,7 @@ static void nrf51_timer_init(Object *obj)
     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
 
     memory_region_init_io(&s->iomem, obj, &rng_ops, s,
-            TYPE_NRF51_TIMER, NRF51_TIMER_SIZE);
+                          TYPE_NRF51_TIMER, NRF51_PERIPHERAL_SIZE);
     sysbus_init_mmio(sbd, &s->iomem);
     sysbus_init_irq(sbd, &s->irq);
 

include/hw/arm/nrf51.h

@@ -24,11 +24,10 @@
 #define NRF51_IOMEM_BASE      0x40000000
 #define NRF51_IOMEM_SIZE      0x20000000
 
+#define NRF51_PERIPHERAL_SIZE 0x00001000
 #define NRF51_UART_BASE       0x40002000
 #define NRF51_TWI_BASE        0x40003000
-#define NRF51_TWI_SIZE        0x00001000
 #define NRF51_TIMER_BASE      0x40008000
-#define NRF51_TIMER_SIZE      0x00001000
 #define NRF51_RNG_BASE        0x4000D000
 #define NRF51_NVMC_BASE       0x4001E000
 #define NRF51_GPIO_BASE       0x50000000

include/hw/i2c/microbit_i2c.h

@@ -29,7 +29,7 @@
 #define MICROBIT_I2C(obj) \
     OBJECT_CHECK(MicrobitI2CState, (obj), TYPE_MICROBIT_I2C)
 
-#define MICROBIT_I2C_NREGS (NRF51_TWI_SIZE / sizeof(uint32_t))
+#define MICROBIT_I2C_NREGS (NRF51_PERIPHERAL_SIZE / sizeof(uint32_t))
 
 typedef struct {
     SysBusDevice parent_obj;