diff options
| -rw-r--r-- | hw/ppc/e500.c | 100 | ||||
| -rw-r--r-- | hw/ppc/e500.h | 5 | ||||
| -rw-r--r-- | hw/ppc/e500plat.c | 6 |
3 files changed, 111 insertions, 0 deletions
diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c index cfc46c4..123379d 100644 --- a/hw/ppc/e500.c +++ b/hw/ppc/e500.c @@ -36,6 +36,8 @@ #include "exec/address-spaces.h" #include "qemu/host-utils.h" #include "hw/pci-host/ppce500.h" +#include "qemu/error-report.h" +#include "hw/platform-bus.h" #define EPAPR_MAGIC (0x45504150) #define BINARY_DEVICE_TREE_FILE "mpc8544ds.dtb" @@ -152,6 +154,72 @@ static void create_dt_mpc8xxx_gpio(void *fdt, const char *soc, const char *mpic) g_free(poweroff); } +typedef struct PlatformDevtreeData { + void *fdt; + const char *mpic; + int irq_start; + const char *node; + PlatformBusDevice *pbus; +} PlatformDevtreeData; + +static int sysbus_device_create_devtree(SysBusDevice *sbdev, void *opaque) +{ + PlatformDevtreeData *data = opaque; + bool matched = false; + + if (!matched) { + error_report("Device %s is not supported by this machine yet.", + qdev_fw_name(DEVICE(sbdev))); + exit(1); + } + + return 0; +} + +static void platform_bus_create_devtree(PPCE500Params *params, void *fdt, + const char *mpic) +{ + gchar *node = g_strdup_printf("/platform@%"PRIx64, params->platform_bus_base); + const char platcomp[] = "qemu,platform\0simple-bus"; + uint64_t addr = params->platform_bus_base; + uint64_t size = params->platform_bus_size; + int irq_start = params->platform_bus_first_irq; + PlatformBusDevice *pbus; + DeviceState *dev; + + /* 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", mpic); + + dev = qdev_find_recursive(sysbus_get_default(), TYPE_PLATFORM_BUS_DEVICE); + pbus = PLATFORM_BUS_DEVICE(dev); + + /* We can only create dt nodes for dynamic devices when they're ready */ + if (pbus->done_gathering) { + PlatformDevtreeData data = { + .fdt = fdt, + .mpic = mpic, + .irq_start = irq_start, + .node = node, + .pbus = pbus, + }; + + /* Loop through all dynamic sysbus devices and create nodes for them */ + foreach_dynamic_sysbus_device(sysbus_device_create_devtree, &data); + } + + g_free(node); +} + static int ppce500_load_device_tree(MachineState *machine, PPCE500Params *params, hwaddr addr, @@ -413,6 +481,10 @@ static int ppce500_load_device_tree(MachineState *machine, create_dt_mpc8xxx_gpio(fdt, soc, mpic); } + if (params->has_platform_bus) { + platform_bus_create_devtree(params, fdt, mpic); + } + params->fixup_devtree(params, fdt); if (toplevel_compat) { @@ -441,6 +513,7 @@ typedef struct DeviceTreeParams { hwaddr initrd_size; hwaddr kernel_base; hwaddr kernel_size; + Notifier notifier; } DeviceTreeParams; static void ppce500_reset_device_tree(void *opaque) @@ -451,6 +524,12 @@ static void ppce500_reset_device_tree(void *opaque) false); } +static void ppce500_init_notify(Notifier *notifier, void *data) +{ + DeviceTreeParams *p = container_of(notifier, DeviceTreeParams, notifier); + ppce500_reset_device_tree(p); +} + static int ppce500_prep_device_tree(MachineState *machine, PPCE500Params *params, hwaddr addr, @@ -469,6 +548,8 @@ static int ppce500_prep_device_tree(MachineState *machine, p->kernel_size = kernel_size; qemu_register_reset(ppce500_reset_device_tree, p); + p->notifier.notify = ppce500_init_notify; + qemu_add_machine_init_done_notifier(&p->notifier); /* Issue the device tree loader once, so that we get the size of the blob */ return ppce500_load_device_tree(machine, params, addr, initrd_base, @@ -825,6 +906,25 @@ void ppce500_init(MachineState *machine, PPCE500Params *params) qdev_connect_gpio_out(dev, 0, poweroff_irq); } + /* Platform Bus Device */ + if (params->has_platform_bus) { + dev = qdev_create(NULL, TYPE_PLATFORM_BUS_DEVICE); + dev->id = TYPE_PLATFORM_BUS_DEVICE; + qdev_prop_set_uint32(dev, "num_irqs", params->platform_bus_num_irqs); + qdev_prop_set_uint32(dev, "mmio_size", params->platform_bus_size); + qdev_init_nofail(dev); + s = SYS_BUS_DEVICE(dev); + + for (i = 0; i < params->platform_bus_num_irqs; i++) { + int irqn = params->platform_bus_first_irq + i; + sysbus_connect_irq(s, i, mpic[irqn]); + } + + memory_region_add_subregion(address_space_mem, + params->platform_bus_base, + sysbus_mmio_get_region(s, 0)); + } + /* Load kernel. */ if (machine->kernel_filename) { kernel_base = cur_base; diff --git a/hw/ppc/e500.h b/hw/ppc/e500.h index 83c5b8b..9f61ab2 100644 --- a/hw/ppc/e500.h +++ b/hw/ppc/e500.h @@ -12,6 +12,11 @@ typedef struct PPCE500Params { int mpic_version; bool has_mpc8xxx_gpio; + bool has_platform_bus; + hwaddr platform_bus_base; + hwaddr platform_bus_size; + int platform_bus_first_irq; + int platform_bus_num_irqs; } PPCE500Params; void ppce500_init(MachineState *machine, PPCE500Params *params); diff --git a/hw/ppc/e500plat.c b/hw/ppc/e500plat.c index bafb56d..d50ae00 100644 --- a/hw/ppc/e500plat.c +++ b/hw/ppc/e500plat.c @@ -36,6 +36,11 @@ static void e500plat_init(MachineState *machine) .fixup_devtree = e500plat_fixup_devtree, .mpic_version = OPENPIC_MODEL_FSL_MPIC_42, .has_mpc8xxx_gpio = true, + .has_platform_bus = true, + .platform_bus_base = 0xf00000000ULL, + .platform_bus_size = (128ULL * 1024 * 1024), + .platform_bus_first_irq = 5, + .platform_bus_num_irqs = 10, }; /* Older KVM versions don't support EPR which breaks guests when we announce @@ -52,6 +57,7 @@ static QEMUMachine e500plat_machine = { .desc = "generic paravirt e500 platform", .init = e500plat_init, .max_cpus = 32, + .has_dynamic_sysbus = true, }; static void e500plat_machine_init(void) |