[PULL 32/45] hw/arm: Add memory region for BCM2837 RPiVid ASB

[Peter Maydell]

From: Sergey Kambalin <serg.oker@gmail.com>

Signed-off-by: Sergey Kambalin <sergey.kambalin@auriga.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20240226000259.2752893-13-sergey.kambalin@auriga.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 include/hw/arm/bcm2838_peripherals.h | 2 ++
 include/hw/arm/raspi_platform.h      | 2 +-
 hw/arm/bcm2838_peripherals.c         | 3 +++
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/include/hw/arm/bcm2838_peripherals.h 
b/include/hw/arm/bcm2838_peripherals.h
index 86b0d96944e..af085934c92 100644
--- a/include/hw/arm/bcm2838_peripherals.h
+++ b/include/hw/arm/bcm2838_peripherals.h
@@ -69,6 +69,8 @@ struct BCM2838PeripheralState {
     OrIRQState mmc_irq_orgate;
     OrIRQState dma_7_8_irq_orgate;
     OrIRQState dma_9_10_irq_orgate;
+
+    UnimplementedDeviceState asb;
 };
 
 struct BCM2838PeripheralClass {
diff --git a/include/hw/arm/raspi_platform.h b/include/hw/arm/raspi_platform.h
index 0db146e5920..7bc4807fa51 100644
--- a/include/hw/arm/raspi_platform.h
+++ b/include/hw/arm/raspi_platform.h
@@ -73,7 +73,7 @@ uint64_t board_ram_size(uint32_t board_rev);
 #define MPHI_OFFSET             0x6000   /* Message-based Parallel Host Intf. 
*/
 #define DMA_OFFSET              0x7000   /* DMA controller, channels 0-14 */
 #define ARBA_OFFSET             0x9000
-#define BRDG_OFFSET             0xa000
+#define BRDG_OFFSET             0xa000   /* RPiVid ASB for BCM2838 (BCM2711) */
 #define ARM_OFFSET              0xB000   /* ARM control block */
 #define ARMCTRL_OFFSET          (ARM_OFFSET + 0x000)
 #define ARMCTRL_IC_OFFSET       (ARM_OFFSET + 0x200) /* Interrupt controller */
diff --git a/hw/arm/bcm2838_peripherals.c b/hw/arm/bcm2838_peripherals.c
index 55ae56733f4..ca2f37b2606 100644
--- a/hw/arm/bcm2838_peripherals.c
+++ b/hw/arm/bcm2838_peripherals.c
@@ -185,6 +185,9 @@ static void bcm2838_peripherals_realize(DeviceState *dev, 
Error **errp)
         sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0));
 
     object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus");
+
+    /* BCM2838 RPiVid ASB must be mapped to prevent kernel crash */
+    create_unimp(s_base, &s->asb, "bcm2838-asb", BRDG_OFFSET, 0x24);
 }
 
 static void bcm2838_peripherals_class_init(ObjectClass *oc, void *data)
-- 
2.34.1