This module will be used by ARM machine files to generate
device tree nodes of dynamically instantiated sysbus devices (ie.
those instantiated with -device option).
Signed-off-by: Alexander Graf <agraf@xxxxxxx>
Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
---
v2 -> v3:
- add arm_ prefix
- arm_sysbus_device_create_devtree becomes static
v1 -> v2:
- Code moved in an arch specific file to accomodate architecture
dependent specificities.
- remove platform_bus_base from PlatformDevtreeData
v1: code originally written by Alex Graf in e500.c and reused for ARM
[Eric Auger]
code originally moved in hw/misc/platform_devices and device itself
---
hw/arm/Makefile.objs | 1 +
hw/arm/dyn_sysbus_devtree.c | 66 +++++++++++++++++++++++++++++++++++++
include/hw/arm/dyn_sysbus_devtree.h | 16 +++++++++
3 files changed, 83 insertions(+)
create mode 100644 hw/arm/dyn_sysbus_devtree.c
create mode 100644 include/hw/arm/dyn_sysbus_devtree.h
diff --git a/hw/arm/Makefile.objs b/hw/arm/Makefile.objs
index 6088e53..bc5e014 100644
--- a/hw/arm/Makefile.objs
+++ b/hw/arm/Makefile.objs
@@ -3,6 +3,7 @@ obj-$(CONFIG_DIGIC) += digic_boards.o
obj-y += integratorcp.o kzm.o mainstone.o musicpal.o nseries.o
obj-y += omap_sx1.o palm.o realview.o spitz.o stellaris.o
obj-y += tosa.o versatilepb.o vexpress.o virt.o xilinx_zynq.o z2.o
+obj-y += dyn_sysbus_devtree.o
obj-y += armv7m.o exynos4210.o pxa2xx.o pxa2xx_gpio.o pxa2xx_pic.o
obj-$(CONFIG_DIGIC) += digic.o
diff --git a/hw/arm/dyn_sysbus_devtree.c b/hw/arm/dyn_sysbus_devtree.c
new file mode 100644
index 0000000..6375024
--- /dev/null
+++ b/hw/arm/dyn_sysbus_devtree.c
@@ -0,0 +1,66 @@
+#include "hw/arm/dyn_sysbus_devtree.h"
+#include "qemu/error-report.h"
+#include "sysemu/device_tree.h"
+
+static int arm_sysbus_device_create_devtree(Object *obj, void *opaque)
+{
+ PlatformDevtreeData *data = opaque;
+ Object *dev;
+ SysBusDevice *sbdev;
+ bool matched = false;
+
+ dev = object_dynamic_cast(obj, TYPE_SYS_BUS_DEVICE);
+ sbdev = (SysBusDevice *)dev;
+
+ if (!sbdev) {
+ /* Container, traverse it for children */
+ return object_child_foreach(obj,
+ arm_sysbus_device_create_devtree, data);
+ }
+
+ if (!matched) {
+ error_report("Device %s is not supported by this machine yet.",
+ qdev_fw_name(DEVICE(dev)));
+ exit(1);
+ }
+
+ return 0;
+}
+
+void arm_platform_bus_create_devtree(DynSysbusParams *params,
+ void *fdt, const char *intc)
+{
+ gchar *node = g_strdup_printf("/platform@%"PRIx64,
+ params->platform_bus_base);
+ const char platcomp[] = "qemu,platform\0simple-bus";
+ PlatformDevtreeData data;
+ Object *container;
+ uint64_t addr = params->platform_bus_base;
+ uint64_t size = params->platform_bus_size;
+ int irq_start = params->platform_bus_first_irq;
+
+ /* Create a /platform node that we can put all devices into */
+ qemu_fdt_add_subnode(fdt, node);
+ qemu_fdt_setprop(fdt, node, "compatible", platcomp, sizeof(platcomp));
+
+ /* Our platform bus region is less than 32bit big, so 1 cell is enough for
+ address and size */
+ qemu_fdt_setprop_cells(fdt, node, "#size-cells", 1);
+ qemu_fdt_setprop_cells(fdt, node, "#address-cells", 1);
+ qemu_fdt_setprop_cells(fdt, node, "ranges", 0, addr >> 32, addr, size);
+
+ qemu_fdt_setprop_phandle(fdt, node, "interrupt-parent", intc);
+
+ /* Loop through all devices and create nodes for known ones */
+ data.fdt = fdt;
+ data.intc = intc;
+ data.irq_start = irq_start;
+ data.node = node;
+
+ container = container_get(qdev_get_machine(), "/peripheral");
+ arm_sysbus_device_create_devtree(container, &data);
+ container = container_get(qdev_get_machine(), "/peripheral-anon");
+ arm_sysbus_device_create_devtree(container, &data);
+
+ g_free(node);
+}
diff --git a/include/hw/arm/dyn_sysbus_devtree.h b/include/hw/arm/dyn_sysbus_devtree.h
new file mode 100644
index 0000000..b072365
--- /dev/null
+++ b/include/hw/arm/dyn_sysbus_devtree.h
@@ -0,0 +1,16 @@
+#ifndef HW_ARM_DYN_SYSBUS_DEVTREE_H
+#define HW_ARM_DYN_SYSBUS_DEVTREE_H
+
+#include "hw/misc/dyn_sysbus_binding.h"
+
+typedef struct PlatformDevtreeData {
+ void *fdt;
+ const char *intc;
+ int irq_start;
+ const char *node;
+} PlatformDevtreeData;
+
+void arm_platform_bus_create_devtree(DynSysbusParams *params,
+ void *fdt, const char *intc);
+
+#endif
--
1.8.3.2
_______________________________________________
kvmarm mailing list
kvmarm@xxxxxxxxxxxxxxxxxxxxx
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
