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Diffstat (limited to 'hw/arm/virt.c')
-rw-r--r--hw/arm/virt.c157
1 files changed, 126 insertions, 31 deletions
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 05db8cb2f7..0a75cc83ee 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -45,9 +45,11 @@
#include "qemu/error-report.h"
#include "hw/pci-host/gpex.h"
#include "hw/arm/virt-acpi-build.h"
+#include "hw/arm/sysbus-fdt.h"
+#include "hw/platform-bus.h"
/* Number of external interrupt lines to configure the GIC with */
-#define NUM_IRQS 128
+#define NUM_IRQS 256
#define GIC_FDT_IRQ_TYPE_SPI 0
#define GIC_FDT_IRQ_TYPE_PPI 1
@@ -60,6 +62,10 @@
#define GIC_FDT_IRQ_PPI_CPU_START 8
#define GIC_FDT_IRQ_PPI_CPU_WIDTH 8
+#define PLATFORM_BUS_NUM_IRQS 64
+
+static ARMPlatformBusSystemParams platform_bus_params;
+
typedef struct VirtBoardInfo {
struct arm_boot_info bootinfo;
const char *cpu_model;
@@ -69,6 +75,8 @@ typedef struct VirtBoardInfo {
void *fdt;
int fdt_size;
uint32_t clock_phandle;
+ uint32_t gic_phandle;
+ uint32_t v2m_phandle;
} VirtBoardInfo;
typedef struct {
@@ -103,20 +111,22 @@ typedef struct {
*/
static const MemMapEntry a15memmap[] = {
/* Space up to 0x8000000 is reserved for a boot ROM */
- [VIRT_FLASH] = { 0, 0x08000000 },
- [VIRT_CPUPERIPHS] = { 0x08000000, 0x00020000 },
+ [VIRT_FLASH] = { 0, 0x08000000 },
+ [VIRT_CPUPERIPHS] = { 0x08000000, 0x00020000 },
/* GIC distributor and CPU interfaces sit inside the CPU peripheral space */
- [VIRT_GIC_DIST] = { 0x08000000, 0x00010000 },
- [VIRT_GIC_CPU] = { 0x08010000, 0x00010000 },
- [VIRT_UART] = { 0x09000000, 0x00001000 },
- [VIRT_RTC] = { 0x09010000, 0x00001000 },
- [VIRT_FW_CFG] = { 0x09020000, 0x0000000a },
- [VIRT_MMIO] = { 0x0a000000, 0x00000200 },
+ [VIRT_GIC_DIST] = { 0x08000000, 0x00010000 },
+ [VIRT_GIC_CPU] = { 0x08010000, 0x00010000 },
+ [VIRT_GIC_V2M] = { 0x08020000, 0x00001000 },
+ [VIRT_UART] = { 0x09000000, 0x00001000 },
+ [VIRT_RTC] = { 0x09010000, 0x00001000 },
+ [VIRT_FW_CFG] = { 0x09020000, 0x0000000a },
+ [VIRT_MMIO] = { 0x0a000000, 0x00000200 },
/* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
- [VIRT_PCIE_MMIO] = { 0x10000000, 0x2eff0000 },
- [VIRT_PCIE_PIO] = { 0x3eff0000, 0x00010000 },
- [VIRT_PCIE_ECAM] = { 0x3f000000, 0x01000000 },
- [VIRT_MEM] = { 0x40000000, 30ULL * 1024 * 1024 * 1024 },
+ [VIRT_PLATFORM_BUS] = { 0x0c000000, 0x02000000 },
+ [VIRT_PCIE_MMIO] = { 0x10000000, 0x2eff0000 },
+ [VIRT_PCIE_PIO] = { 0x3eff0000, 0x00010000 },
+ [VIRT_PCIE_ECAM] = { 0x3f000000, 0x01000000 },
+ [VIRT_MEM] = { 0x40000000, 30ULL * 1024 * 1024 * 1024 },
};
static const int a15irqmap[] = {
@@ -124,6 +134,8 @@ static const int a15irqmap[] = {
[VIRT_RTC] = 2,
[VIRT_PCIE] = 3, /* ... to 6 */
[VIRT_MMIO] = 16, /* ...to 16 + NUM_VIRTIO_TRANSPORTS - 1 */
+ [VIRT_GIC_V2M] = 48, /* ...to 48 + NUM_GICV2M_SPIS - 1 */
+ [VIRT_PLATFORM_BUS] = 112, /* ...to 112 + PLATFORM_BUS_NUM_IRQS -1 */
};
static VirtBoardInfo machines[] = {
@@ -299,12 +311,23 @@ static void fdt_add_cpu_nodes(const VirtBoardInfo *vbi)
}
}
-static uint32_t fdt_add_gic_node(const VirtBoardInfo *vbi)
+static void fdt_add_v2m_gic_node(VirtBoardInfo *vbi)
{
- uint32_t gic_phandle;
+ vbi->v2m_phandle = qemu_fdt_alloc_phandle(vbi->fdt);
+ qemu_fdt_add_subnode(vbi->fdt, "/intc/v2m");
+ qemu_fdt_setprop_string(vbi->fdt, "/intc/v2m", "compatible",
+ "arm,gic-v2m-frame");
+ qemu_fdt_setprop(vbi->fdt, "/intc/v2m", "msi-controller", NULL, 0);
+ qemu_fdt_setprop_sized_cells(vbi->fdt, "/intc/v2m", "reg",
+ 2, vbi->memmap[VIRT_GIC_V2M].base,
+ 2, vbi->memmap[VIRT_GIC_V2M].size);
+ qemu_fdt_setprop_cell(vbi->fdt, "/intc/v2m", "phandle", vbi->v2m_phandle);
+}
- gic_phandle = qemu_fdt_alloc_phandle(vbi->fdt);
- qemu_fdt_setprop_cell(vbi->fdt, "/", "interrupt-parent", gic_phandle);
+static void fdt_add_gic_node(VirtBoardInfo *vbi)
+{
+ vbi->gic_phandle = qemu_fdt_alloc_phandle(vbi->fdt);
+ qemu_fdt_setprop_cell(vbi->fdt, "/", "interrupt-parent", vbi->gic_phandle);
qemu_fdt_add_subnode(vbi->fdt, "/intc");
/* 'cortex-a15-gic' means 'GIC v2' */
@@ -317,12 +340,32 @@ static uint32_t fdt_add_gic_node(const VirtBoardInfo *vbi)
2, vbi->memmap[VIRT_GIC_DIST].size,
2, vbi->memmap[VIRT_GIC_CPU].base,
2, vbi->memmap[VIRT_GIC_CPU].size);
- qemu_fdt_setprop_cell(vbi->fdt, "/intc", "phandle", gic_phandle);
+ qemu_fdt_setprop_cell(vbi->fdt, "/intc", "#address-cells", 0x2);
+ qemu_fdt_setprop_cell(vbi->fdt, "/intc", "#size-cells", 0x2);
+ qemu_fdt_setprop(vbi->fdt, "/intc", "ranges", NULL, 0);
+ qemu_fdt_setprop_cell(vbi->fdt, "/intc", "phandle", vbi->gic_phandle);
+}
+
+static void create_v2m(VirtBoardInfo *vbi, qemu_irq *pic)
+{
+ int i;
+ int irq = vbi->irqmap[VIRT_GIC_V2M];
+ DeviceState *dev;
- return gic_phandle;
+ dev = qdev_create(NULL, "arm-gicv2m");
+ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, vbi->memmap[VIRT_GIC_V2M].base);
+ qdev_prop_set_uint32(dev, "base-spi", irq);
+ qdev_prop_set_uint32(dev, "num-spi", NUM_GICV2M_SPIS);
+ qdev_init_nofail(dev);
+
+ for (i = 0; i < NUM_GICV2M_SPIS; i++) {
+ sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, pic[irq + i]);
+ }
+
+ fdt_add_v2m_gic_node(vbi);
}
-static uint32_t create_gic(const VirtBoardInfo *vbi, qemu_irq *pic)
+static void create_gic(VirtBoardInfo *vbi, qemu_irq *pic)
{
/* We create a standalone GIC v2 */
DeviceState *gicdev;
@@ -371,7 +414,9 @@ static uint32_t create_gic(const VirtBoardInfo *vbi, qemu_irq *pic)
pic[i] = qdev_get_gpio_in(gicdev, i);
}
- return fdt_add_gic_node(vbi);
+ fdt_add_gic_node(vbi);
+
+ create_v2m(vbi, pic);
}
static void create_uart(const VirtBoardInfo *vbi, qemu_irq *pic)
@@ -587,7 +632,7 @@ static void create_pcie_irq_map(const VirtBoardInfo *vbi, uint32_t gic_phandle,
int first_irq, const char *nodename)
{
int devfn, pin;
- uint32_t full_irq_map[4 * 4 * 8] = { 0 };
+ uint32_t full_irq_map[4 * 4 * 10] = { 0 };
uint32_t *irq_map = full_irq_map;
for (devfn = 0; devfn <= 0x18; devfn += 0x8) {
@@ -600,13 +645,13 @@ static void create_pcie_irq_map(const VirtBoardInfo *vbi, uint32_t gic_phandle,
uint32_t map[] = {
devfn << 8, 0, 0, /* devfn */
pin + 1, /* PCI pin */
- gic_phandle, irq_type, irq_nr, irq_level }; /* GIC irq */
+ gic_phandle, 0, 0, irq_type, irq_nr, irq_level }; /* GIC irq */
/* Convert map to big endian */
- for (i = 0; i < 8; i++) {
+ for (i = 0; i < 10; i++) {
irq_map[i] = cpu_to_be32(map[i]);
}
- irq_map += 8;
+ irq_map += 10;
}
}
@@ -618,8 +663,7 @@ static void create_pcie_irq_map(const VirtBoardInfo *vbi, uint32_t gic_phandle,
0x7 /* PCI irq */);
}
-static void create_pcie(const VirtBoardInfo *vbi, qemu_irq *pic,
- uint32_t gic_phandle)
+static void create_pcie(const VirtBoardInfo *vbi, qemu_irq *pic)
{
hwaddr base_mmio = vbi->memmap[VIRT_PCIE_MMIO].base;
hwaddr size_mmio = vbi->memmap[VIRT_PCIE_MMIO].size;
@@ -676,6 +720,8 @@ static void create_pcie(const VirtBoardInfo *vbi, qemu_irq *pic,
qemu_fdt_setprop_cells(vbi->fdt, nodename, "bus-range", 0,
nr_pcie_buses - 1);
+ qemu_fdt_setprop_cells(vbi->fdt, nodename, "msi-parent", vbi->v2m_phandle);
+
qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
2, base_ecam, 2, size_ecam);
qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "ranges",
@@ -685,11 +731,52 @@ static void create_pcie(const VirtBoardInfo *vbi, qemu_irq *pic,
2, base_mmio, 2, size_mmio);
qemu_fdt_setprop_cell(vbi->fdt, nodename, "#interrupt-cells", 1);
- create_pcie_irq_map(vbi, gic_phandle, irq, nodename);
+ create_pcie_irq_map(vbi, vbi->gic_phandle, irq, nodename);
g_free(nodename);
}
+static void create_platform_bus(VirtBoardInfo *vbi, qemu_irq *pic)
+{
+ DeviceState *dev;
+ SysBusDevice *s;
+ int i;
+ ARMPlatformBusFDTParams *fdt_params = g_new(ARMPlatformBusFDTParams, 1);
+ MemoryRegion *sysmem = get_system_memory();
+
+ platform_bus_params.platform_bus_base = vbi->memmap[VIRT_PLATFORM_BUS].base;
+ platform_bus_params.platform_bus_size = vbi->memmap[VIRT_PLATFORM_BUS].size;
+ platform_bus_params.platform_bus_first_irq = vbi->irqmap[VIRT_PLATFORM_BUS];
+ platform_bus_params.platform_bus_num_irqs = PLATFORM_BUS_NUM_IRQS;
+
+ fdt_params->system_params = &platform_bus_params;
+ fdt_params->binfo = &vbi->bootinfo;
+ fdt_params->intc = "/intc";
+ /*
+ * register a machine init done notifier that creates the device tree
+ * nodes of the platform bus and its children dynamic sysbus devices
+ */
+ arm_register_platform_bus_fdt_creator(fdt_params);
+
+ dev = qdev_create(NULL, TYPE_PLATFORM_BUS_DEVICE);
+ dev->id = TYPE_PLATFORM_BUS_DEVICE;
+ qdev_prop_set_uint32(dev, "num_irqs",
+ platform_bus_params.platform_bus_num_irqs);
+ qdev_prop_set_uint32(dev, "mmio_size",
+ platform_bus_params.platform_bus_size);
+ qdev_init_nofail(dev);
+ s = SYS_BUS_DEVICE(dev);
+
+ for (i = 0; i < platform_bus_params.platform_bus_num_irqs; i++) {
+ int irqn = platform_bus_params.platform_bus_first_irq + i;
+ sysbus_connect_irq(s, i, pic[irqn]);
+ }
+
+ memory_region_add_subregion(sysmem,
+ platform_bus_params.platform_bus_base,
+ sysbus_mmio_get_region(s, 0));
+}
+
static void *machvirt_dtb(const struct arm_boot_info *binfo, int *fdt_size)
{
const VirtBoardInfo *board = (const VirtBoardInfo *)binfo;
@@ -717,7 +804,6 @@ static void machvirt_init(MachineState *machine)
VirtBoardInfo *vbi;
VirtGuestInfoState *guest_info_state = g_malloc0(sizeof *guest_info_state);
VirtGuestInfo *guest_info = &guest_info_state->info;
- uint32_t gic_phandle;
char **cpustr;
if (!cpu_model) {
@@ -794,13 +880,13 @@ static void machvirt_init(MachineState *machine)
create_flash(vbi);
- gic_phandle = create_gic(vbi, pic);
+ create_gic(vbi, pic);
create_uart(vbi, pic);
create_rtc(vbi, pic);
- create_pcie(vbi, pic, gic_phandle);
+ create_pcie(vbi, pic);
/* Create mmio transports, so the user can create virtio backends
* (which will be automatically plugged in to the transports). If
@@ -828,6 +914,14 @@ static void machvirt_init(MachineState *machine)
vbi->bootinfo.get_dtb = machvirt_dtb;
vbi->bootinfo.firmware_loaded = bios_name || drive_get(IF_PFLASH, 0, 0);
arm_load_kernel(ARM_CPU(first_cpu), &vbi->bootinfo);
+
+ /*
+ * arm_load_kernel machine init done notifier registration must
+ * happen before the platform_bus_create call. In this latter,
+ * another notifier is registered which adds platform bus nodes.
+ * Notifiers are executed in registration reverse order.
+ */
+ create_platform_bus(vbi, pic);
}
static bool virt_get_secure(Object *obj, Error **errp)
@@ -866,6 +960,7 @@ static void virt_class_init(ObjectClass *oc, void *data)
mc->desc = "ARM Virtual Machine",
mc->init = machvirt_init;
mc->max_cpus = 8;
+ mc->has_dynamic_sysbus = true;
}
static const TypeInfo machvirt_info = {
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-03 00:25:58 +0000