@@ -1296,6 +1296,13 @@ F: hw/mips/boston.c
F: hw/pci-host/xilinx-pcie.c
F: include/hw/pci-host/xilinx-pcie.h
+Virt
+M: Jiaxun Yang <jiaxun.yang@flygoat.com>
+S: Maintained
+F: hw/mips/virt.c
+F: hw/misc/mips_trickbox.c
+F: include/hw/misc/mips_trickbox.h
+
OpenRISC Machines
-----------------
or1k-sim
@@ -24,6 +24,7 @@ CONFIG_I8259=y
CONFIG_MC146818RTC=y
CONFIG_MIPS_CPS=y
CONFIG_MIPS_ITU=y
+CONFIG_MIPS_VIRT=y
CONFIG_MALTA=y
CONFIG_PCNET_PCI=y
CONFIG_MIPSSIM=y
@@ -10,6 +10,8 @@ machine types are emulated:
- A generic ISA PC-like machine \"mips\"
+- Generic Virtual Platform \"virt\"
+
- The MIPS Malta prototype board \"malta\"
- An ACER Pica \"pica61\". This machine needs the 64-bit emulator.
@@ -31,6 +33,26 @@ emulated:
- NE2000 network card
+The virt machine supports the following devices:
+
+- A range of MIPS CPUs, default is the P5600 (32-bit) or I6400 (64-bit)
+
+- MIPS CM (Coherence Manager)
+
+- CFI parallel NOR flash memory
+
+- 1 NS16550 compatible UART
+
+- 1 Google Goldfish RTC
+
+- 1 MIPS Trickbox device
+
+- 8 virtio-mmio transport devices
+
+- 1 generic PCIe host bridge
+
+- The fw_cfg device that allows a guest to obtain data from QEMU
+
The Malta emulation supports the following devices:
- Core board with MIPS 24Kf CPU and Galileo system controller
@@ -59,5 +59,22 @@ config MIPS_BOSTON
select AHCI_ICH9
select SERIAL
+config MIPS_VIRT
+ bool
+ imply PCI_DEVICES
+ imply VIRTIO_VGA
+ imply TEST_DEVICES
+ select MIPS_CPS
+ select MIPS_TRICKBOX
+ select SERIAL
+ select FW_CFG_MIPS
+ select GOLDFISH_RTC
+ select PCI
+ select PCI_EXPRESS_GENERIC_BRIDGE
+ select PFLASH_CFI01
+ select VIRTIO_MMIO
+ select FW_CFG_DMA
+ select PLATFORM_BUS
+
config FW_CFG_MIPS
bool
@@ -1,6 +1,7 @@
mips_ss = ss.source_set()
mips_ss.add(files('bootloader.c', 'mips_int.c'))
mips_ss.add(when: 'CONFIG_FW_CFG_MIPS', if_true: files('fw_cfg.c'))
+mips_ss.add(when: 'CONFIG_MIPS_VIRT', if_true: files('virt.c'))
mips_ss.add(when: 'CONFIG_LOONGSON3V', if_true: files('loongson3_bootp.c', 'loongson3_virt.c'))
mips_ss.add(when: 'CONFIG_MALTA', if_true: files('malta.c'))
mips_ss.add(when: 'CONFIG_MIPS_CPS', if_true: files('cps.c'))
new file mode 100644
@@ -0,0 +1,916 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+/*
+ * QEMU MIPS Virt Board
+ * Copyright (C) 2022 Jiaxun Yang <jiaxun.yang@flygoat.com>
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/units.h"
+#include "qemu/datadir.h"
+
+#include "chardev/char.h"
+#include "hw/block/flash.h"
+#include "hw/boards.h"
+#include "hw/char/serial.h"
+#include "hw/core/sysbus-fdt.h"
+#include "hw/display/ramfb.h"
+#include "hw/intc/goldfish_pic.h"
+#include "hw/loader-fit.h"
+#include "hw/loader.h"
+#include "hw/mips/bootloader.h"
+#include "hw/mips/cps.h"
+#include "hw/mips/cpudevs.h"
+#include "hw/mips/mips.h"
+#include "hw/misc/mips_trickbox.h"
+#include "hw/pci-host/gpex.h"
+#include "hw/pci/pci.h"
+#include "hw/platform-bus.h"
+#include "hw/qdev-clock.h"
+#include "hw/qdev-properties.h"
+#include "hw/rtc/goldfish_rtc.h"
+#include "hw/sysbus.h"
+#include "qapi/error.h"
+#include "qemu/error-report.h"
+#include "qemu/guest-random.h"
+#include "qemu/log.h"
+#include "sysemu/device_tree.h"
+#include "sysemu/kvm.h"
+#include "sysemu/qtest.h"
+#include "sysemu/reset.h"
+#include "sysemu/runstate.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/tcg.h"
+#include "sysemu/tpm.h"
+#include "elf.h"
+
+#include "qom/object.h"
+#include <libfdt.h>
+
+#define TYPE_MIPS_VIRT_MACHINE MACHINE_TYPE_NAME("virt")
+typedef struct MIPSVirtState MIPSVirtState;
+DECLARE_INSTANCE_CHECKER(MIPSVirtState, MIPS_VIRT_MACHINE,
+ TYPE_MIPS_VIRT_MACHINE)
+
+#define FDT_IRQ_TYPE_NONE 0
+#define FDT_IRQ_TYPE_LEVEL_HIGH 4
+#define FDT_GIC_SHARED 0
+#define FDT_GIC_LOCAL 1
+#define FDT_VIRT_CLK_SYS 1
+#define FDT_VIRT_CLK_CPU 2
+#define FDT_PCI_IRQ_MAP_PINS 4
+#define FDT_PCI_IRQ_MAP_DESCS 6
+
+#define FDT_PCI_ADDR_CELLS 3
+#define FDT_PCI_INT_CELLS 1
+#define FDT_MAX_INT_CELLS 3
+#define FDT_MAX_INT_MAP_WIDTH \
+ (FDT_PCI_ADDR_CELLS + FDT_PCI_INT_CELLS + 1 + FDT_MAX_INT_CELLS)
+
+#define VIRT_CPU_REF_CLK_FREQ 100000000
+
+struct MIPSVirtState {
+ MachineState parent;
+
+ Notifier machine_done;
+ Clock *cpuclk;
+ DeviceState *platform_bus_dev;
+ MIPSCPSState *cps;
+ DeviceState *pic;
+ PFlashCFI01 *flash;
+ MemoryRegion *rom;
+ FWCfgState *fw_cfg;
+ int fdt_size;
+};
+
+enum {
+ VIRT_LOMEM,
+ VIRT_ROM,
+ VIRT_FLASH,
+ VIRT_PLATFORM_BUS,
+ VIRT_CM,
+ VIRT_GIC,
+ VIRT_CDMM,
+ VIRT_CPC,
+ VIRT_PCIE_PIO,
+ VIRT_PCIE_ECAM,
+ VIRT_ROM_BOOT,
+ VIRT_FW_CFG,
+ VIRT_RTC,
+ VIRT_VIRTIO,
+ VIRT_UART0,
+ VIRT_TRICKBOX,
+ VIRT_PCIE_MMIO,
+ VIRT_HIGHMEM
+};
+
+static const MemMapEntry virt_memmap[] = {
+ [VIRT_LOMEM] = { 0x0, 0x10000000 },
+ [VIRT_ROM] = { 0x10000000, 0x2000000 },
+ [VIRT_FLASH] = { 0x12000000, 0x2000000 },
+ [VIRT_PLATFORM_BUS] = { 0x14000000, 0x2000000 },
+ /* CPC CM GCRs */
+ [VIRT_CM] = { 0x16100000, 0x20000 },
+ [VIRT_GIC] = { 0x16120000, 0x20000 },
+ [VIRT_CDMM] = { 0x16140000, 0x8000 },
+ [VIRT_CPC] = { 0x16148000, 0x8000 },
+ /* Leave some space for CM GCR growth */
+ [VIRT_PCIE_PIO] = { 0x1a000000, 0x10000 },
+ [VIRT_PCIE_ECAM] = { 0x1b000000, 0x1000000 },
+ [VIRT_ROM_BOOT] = { 0x1fc00000, 0x300000 },
+ [VIRT_FW_CFG] = { 0x1ff00000, 0x100 },
+ [VIRT_RTC] = { 0x1ff01000, 0x100 },
+ [VIRT_VIRTIO] = { 0x1ff02000, 0x1000 }, /* 8 * virtio */
+ /* Align with MIPS AVP UART and Trickbox position */
+ [VIRT_UART0] = { 0x1ffff000, 0x100 },
+ [VIRT_TRICKBOX] = { 0x1fffff00, 0x100 },
+ [VIRT_PCIE_MMIO] = { 0x20000000, 0x20000000 },
+ [VIRT_HIGHMEM] = { 0x40000000, 0x0 }, /* Variable */
+};
+
+enum {
+ UART0_IRQ = 0,
+ RTC_IRQ = 1,
+ PCIE_IRQ = 2,
+ VIRTIO_IRQ = 7,
+ VIRTIO_COUNT = 8,
+ VIRT_PLATFORM_BUS_IRQ = 16
+};
+
+#define VIRT_PLATFORM_BUS_NUM_IRQS 16
+
+static void create_fdt_hypervisor(MIPSVirtState *s)
+{
+ MachineState *mc = MACHINE(s);
+
+ qemu_fdt_add_subnode(mc->fdt, "/hypervisor");
+ if (kvm_enabled()) {
+ qemu_fdt_setprop_string(mc->fdt, "/hypervisor", "compatible",
+ "linux,kvm");
+ } else if (tcg_enabled()) {
+ qemu_fdt_setprop_string(mc->fdt, "/hypervisor", "compatible",
+ "qemu,tcg");
+ }
+}
+
+static void create_fdt_memory(MIPSVirtState *s, const MemMapEntry *memmap)
+{
+ MachineState *mc = MACHINE(s);
+ char *name;
+
+ name = g_strdup_printf("/memory@0");
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_string(mc->fdt, name, "device_type", "memory");
+ qemu_fdt_setprop_sized_cells(mc->fdt, name, "reg", 2,
+ memmap[VIRT_LOMEM].base, 2,
+ MIN(memmap[VIRT_LOMEM].size, mc->ram_size));
+ g_free(name);
+
+ if (mc->ram_size > memmap[VIRT_LOMEM].size) {
+ name =
+ g_strdup_printf("/memory@%" HWADDR_PRIx, memmap[VIRT_HIGHMEM].base);
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_string(mc->fdt, name, "device_type", "memory");
+ qemu_fdt_setprop_sized_cells(mc->fdt, name, "reg", 2,
+ memmap[VIRT_HIGHMEM].base, 2,
+ mc->ram_size - memmap[VIRT_LOMEM].size);
+ g_free(name);
+ }
+}
+
+static void create_fdt_cpc(MIPSVirtState *s, const MemMapEntry *memmap,
+ uint32_t clk_ph, uint32_t irq_ph)
+{
+ MachineState *mc = MACHINE(s);
+ char *name, *gic_name;
+
+ /* GIC with it's timer node */
+ gic_name = g_strdup_printf("/soc/interrupt-controller@%" HWADDR_PRIx,
+ memmap[VIRT_GIC].base);
+ qemu_fdt_add_subnode(mc->fdt, gic_name);
+ qemu_fdt_setprop_string(mc->fdt, gic_name, "compatible", "mti,gic");
+ qemu_fdt_setprop_cells(mc->fdt, gic_name, "reg", 0x0, memmap[VIRT_GIC].base,
+ 0x0, memmap[VIRT_GIC].size);
+ qemu_fdt_setprop(mc->fdt, gic_name, "interrupt-controller", NULL, 0);
+ qemu_fdt_setprop_cell(mc->fdt, gic_name, "#interrupt-cells", 3);
+ qemu_fdt_setprop_cell(mc->fdt, gic_name, "phandle", irq_ph);
+
+ name = g_strdup_printf("%s/timer", gic_name);
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_string(mc->fdt, name, "compatible", "mti,gic-timer");
+ qemu_fdt_setprop_cells(mc->fdt, name, "interrupts", FDT_GIC_LOCAL, 1,
+ FDT_IRQ_TYPE_NONE);
+ qemu_fdt_setprop_cell(mc->fdt, name, "clocks", clk_ph);
+ g_free(name);
+ g_free(gic_name);
+
+ /* CM node */
+ name = g_strdup_printf("/soc/cm@%" HWADDR_PRIx, memmap[VIRT_CM].base);
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_string(mc->fdt, name, "compatible", "mti,mips-cm");
+ qemu_fdt_setprop_cells(mc->fdt, name, "reg", 0x0, memmap[VIRT_CM].base,
+ 0x0, memmap[VIRT_CM].size);
+ g_free(name);
+
+ /* CDMM node */
+ name = g_strdup_printf("/soc/cdmm@%" HWADDR_PRIx, memmap[VIRT_CDMM].base);
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_string(mc->fdt, name, "compatible", "mti,mips-cdmm");
+ qemu_fdt_setprop_cells(mc->fdt, name, "reg", 0x0, memmap[VIRT_CDMM].base,
+ 0x0, memmap[VIRT_CDMM].size);
+ g_free(name);
+
+ /* CPC node */
+ name = g_strdup_printf("/soc/cpc@%" HWADDR_PRIx, memmap[VIRT_CPC].base);
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_string(mc->fdt, name, "compatible", "mti,mips-cpc");
+ qemu_fdt_setprop_cells(mc->fdt, name, "reg", 0x0, memmap[VIRT_CPC].base,
+ 0x0, memmap[VIRT_CPC].size);
+ g_free(name);
+}
+
+static void create_fdt_virtio(MIPSVirtState *s, const MemMapEntry *memmap,
+ uint32_t irq_ph)
+{
+ int i;
+ char *name;
+ MachineState *mc = MACHINE(s);
+
+ for (i = 0; i < VIRTIO_COUNT; i++) {
+ name = g_strdup_printf(
+ "/soc/virtio_mmio@%lx",
+ (long)(memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size));
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_string(mc->fdt, name, "compatible", "virtio,mmio");
+ qemu_fdt_setprop_cells(mc->fdt, name, "reg", 0x0,
+ memmap[VIRT_VIRTIO].base +
+ i * memmap[VIRT_VIRTIO].size,
+ 0x0, memmap[VIRT_VIRTIO].size);
+ qemu_fdt_setprop_cell(mc->fdt, name, "interrupt-parent", irq_ph);
+ qemu_fdt_setprop_cells(mc->fdt, name, "interrupts", FDT_GIC_SHARED,
+ VIRTIO_IRQ + i, FDT_IRQ_TYPE_LEVEL_HIGH);
+ g_free(name);
+ }
+}
+
+static void create_pcie_irq_map(MIPSVirtState *s, void *fdt, char *nodename,
+ uint32_t irq_ph)
+{
+ int pin, dev;
+ uint32_t irq_map_stride = 0;
+ uint32_t full_irq_map[GPEX_NUM_IRQS * GPEX_NUM_IRQS *
+ FDT_MAX_INT_MAP_WIDTH] = {};
+ uint32_t *irq_map = full_irq_map;
+
+ /* This code creates a standard swizzle of interrupts such that
+ * each device's first interrupt is based on it's PCI_SLOT number.
+ * (See pci_swizzle_map_irq_fn())
+ *
+ * We only need one entry per interrupt in the table (not one per
+ * possible slot) seeing the interrupt-map-mask will allow the table
+ * to wrap to any number of devices.
+ */
+ for (dev = 0; dev < GPEX_NUM_IRQS; dev++) {
+ int devfn = dev * 0x8;
+
+ for (pin = 0; pin < GPEX_NUM_IRQS; pin++) {
+ int irq_nr = PCIE_IRQ + ((pin + PCI_SLOT(devfn)) % GPEX_NUM_IRQS);
+ int i = 0;
+
+ /* Fill PCI address cells */
+ irq_map[i] = cpu_to_be32(devfn << 8);
+ i += FDT_PCI_ADDR_CELLS;
+
+ /* Fill PCI Interrupt cells */
+ irq_map[i] = cpu_to_be32(pin + 1);
+ i += FDT_PCI_INT_CELLS;
+
+ /* Fill interrupt controller phandle and cells */
+ irq_map[i++] = cpu_to_be32(irq_ph);
+ irq_map[i++] = cpu_to_be32(FDT_GIC_SHARED);
+
+ irq_map[i++] = cpu_to_be32(irq_nr);
+ irq_map[i++] = cpu_to_be32(FDT_IRQ_TYPE_LEVEL_HIGH);
+
+ if (!irq_map_stride) {
+ irq_map_stride = i;
+ }
+ irq_map += irq_map_stride;
+ }
+ }
+
+ qemu_fdt_setprop(fdt, nodename, "interrupt-map", full_irq_map,
+ GPEX_NUM_IRQS * GPEX_NUM_IRQS * irq_map_stride *
+ sizeof(uint32_t));
+
+ qemu_fdt_setprop_cells(fdt, nodename, "interrupt-map-mask", 0x1800, 0, 0,
+ 0x7);
+}
+
+static void create_fdt_pcie(MIPSVirtState *s, const MemMapEntry *memmap,
+ uint32_t irq_ph)
+{
+ char *name;
+ MachineState *mc = MACHINE(s);
+
+ name = g_strdup_printf("/soc/pci@%lx", (long)memmap[VIRT_PCIE_ECAM].base);
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_cell(mc->fdt, name, "#address-cells", FDT_PCI_ADDR_CELLS);
+ qemu_fdt_setprop_cell(mc->fdt, name, "#interrupt-cells", FDT_PCI_INT_CELLS);
+ qemu_fdt_setprop_cell(mc->fdt, name, "#size-cells", 0x2);
+ qemu_fdt_setprop_string(mc->fdt, name, "compatible",
+ "pci-host-ecam-generic");
+ qemu_fdt_setprop_string(mc->fdt, name, "device_type", "pci");
+ qemu_fdt_setprop_cell(mc->fdt, name, "linux,pci-domain", 0);
+ qemu_fdt_setprop_cells(mc->fdt, name, "bus-range", 0,
+ memmap[VIRT_PCIE_ECAM].size / PCIE_MMCFG_SIZE_MIN -
+ 1);
+ qemu_fdt_setprop_cells(mc->fdt, name, "reg", 0, memmap[VIRT_PCIE_ECAM].base,
+ 0, memmap[VIRT_PCIE_ECAM].size);
+ qemu_fdt_setprop_sized_cells(
+ mc->fdt, name, "ranges", 1, FDT_PCI_RANGE_IOPORT, 2, 0, 2,
+ memmap[VIRT_PCIE_PIO].base, 2, memmap[VIRT_PCIE_PIO].size, 1,
+ FDT_PCI_RANGE_MMIO, 2, memmap[VIRT_PCIE_MMIO].base, 2,
+ memmap[VIRT_PCIE_MMIO].base, 2, memmap[VIRT_PCIE_MMIO].size);
+
+ create_pcie_irq_map(s, mc->fdt, name, irq_ph);
+ g_free(name);
+}
+
+static void create_fdt_uart(MIPSVirtState *s, const MemMapEntry *memmap,
+ uint32_t irq_ph)
+{
+ char *name;
+ MachineState *mc = MACHINE(s);
+
+ name = g_strdup_printf("/soc/serial@%lx", (long)memmap[VIRT_UART0].base);
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_string(mc->fdt, name, "compatible", "ns16550a");
+ qemu_fdt_setprop_cells(mc->fdt, name, "reg", 0x0, memmap[VIRT_UART0].base,
+ 0x0, memmap[VIRT_UART0].size);
+ qemu_fdt_setprop_cell(mc->fdt, name, "clock-frequency", 3686400);
+ qemu_fdt_setprop_cell(mc->fdt, name, "interrupt-parent", irq_ph);
+ qemu_fdt_setprop_cells(mc->fdt, name, "interrupts", FDT_GIC_SHARED,
+ UART0_IRQ, FDT_IRQ_TYPE_LEVEL_HIGH);
+
+ qemu_fdt_add_subnode(mc->fdt, "/chosen");
+ qemu_fdt_setprop_string(mc->fdt, "/chosen", "stdout-path", name);
+ g_free(name);
+}
+
+static void create_fdt_rtc(MIPSVirtState *s, const MemMapEntry *memmap,
+ uint32_t irq_ph)
+{
+ char *name;
+ MachineState *mc = MACHINE(s);
+
+ name = g_strdup_printf("/soc/rtc@%lx", (long)memmap[VIRT_RTC].base);
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_string(mc->fdt, name, "compatible", "google,goldfish-rtc");
+ qemu_fdt_setprop_cells(mc->fdt, name, "reg", 0x0, memmap[VIRT_RTC].base,
+ 0x0, memmap[VIRT_RTC].size);
+ qemu_fdt_setprop_cell(mc->fdt, name, "interrupt-parent", irq_ph);
+ qemu_fdt_setprop_cells(mc->fdt, name, "interrupts", FDT_GIC_SHARED,
+ RTC_IRQ, FDT_IRQ_TYPE_LEVEL_HIGH);
+
+ g_free(name);
+}
+
+static void create_fdt_reset(MIPSVirtState *s, const MemMapEntry *memmap)
+{
+ char *name;
+ uint32_t syscon_ph;
+ MachineState *mc = MACHINE(s);
+
+ syscon_ph = qemu_fdt_alloc_phandle(mc->fdt);
+ name =
+ g_strdup_printf("/soc/trickbox@%lx", (long)memmap[VIRT_TRICKBOX].base);
+ qemu_fdt_add_subnode(mc->fdt, name);
+ {
+ static const char *const compat[2] = { "mips,trickbox", "syscon" };
+ qemu_fdt_setprop_string_array(mc->fdt, name, "compatible",
+ (char **)&compat, ARRAY_SIZE(compat));
+ }
+ qemu_fdt_setprop_cells(mc->fdt, name, "reg", 0x0,
+ memmap[VIRT_TRICKBOX].base, 0x0,
+ memmap[VIRT_TRICKBOX].size);
+ qemu_fdt_setprop_cell(mc->fdt, name, "phandle", syscon_ph);
+ g_free(name);
+
+ name = g_strdup_printf("/reboot");
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_string(mc->fdt, name, "compatible", "syscon-reboot");
+ qemu_fdt_setprop_cell(mc->fdt, name, "regmap", syscon_ph);
+ qemu_fdt_setprop_cell(mc->fdt, name, "offset", REG_SIM_CMD);
+ qemu_fdt_setprop_cell(mc->fdt, name, "value", TRICK_RESET);
+ g_free(name);
+
+ name = g_strdup_printf("/poweroff");
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_string(mc->fdt, name, "compatible", "syscon-poweroff");
+ qemu_fdt_setprop_cell(mc->fdt, name, "regmap", syscon_ph);
+ qemu_fdt_setprop_cell(mc->fdt, name, "offset", REG_SIM_CMD);
+ qemu_fdt_setprop_cell(mc->fdt, name, "value", TRICK_HALT);
+ g_free(name);
+}
+
+static void create_fdt_flash(MIPSVirtState *s, const MemMapEntry *memmap)
+{
+ char *name;
+ MachineState *mc = MACHINE(s);
+ hwaddr flashsize = virt_memmap[VIRT_FLASH].size;
+ hwaddr flashbase = virt_memmap[VIRT_FLASH].base;
+
+ name = g_strdup_printf("/flash@%" PRIx64, flashbase);
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_string(mc->fdt, name, "compatible", "cfi-flash");
+ qemu_fdt_setprop_sized_cells(mc->fdt, name, "reg", 2, flashbase, 2,
+ flashsize);
+ qemu_fdt_setprop_cell(mc->fdt, name, "bank-width", 4);
+ g_free(name);
+}
+
+static void create_fdt_fw_cfg(MIPSVirtState *s, const MemMapEntry *memmap)
+{
+ char *nodename;
+ MachineState *mc = MACHINE(s);
+ hwaddr base = memmap[VIRT_FW_CFG].base;
+ hwaddr size = memmap[VIRT_FW_CFG].size;
+
+ nodename = g_strdup_printf("/fw-cfg@%" PRIx64, base);
+ qemu_fdt_add_subnode(mc->fdt, nodename);
+ qemu_fdt_setprop_string(mc->fdt, nodename, "compatible",
+ "qemu,fw-cfg-mmio");
+ qemu_fdt_setprop_sized_cells(mc->fdt, nodename, "reg", 2, base, 2, size);
+ g_free(nodename);
+}
+
+static void create_fdt(MIPSVirtState *s, const MemMapEntry *memmap,
+ const char *cmdline)
+{
+ MachineState *mc = MACHINE(s);
+ uint32_t clk_ph, irq_ph;
+ uint8_t rng_seed[32];
+
+ if (mc->dtb) {
+ mc->fdt = load_device_tree(mc->dtb, &s->fdt_size);
+ if (!mc->fdt) {
+ error_report("load_device_tree() failed");
+ exit(1);
+ }
+ goto update_bootargs;
+ } else {
+ mc->fdt = create_device_tree(&s->fdt_size);
+ if (!mc->fdt) {
+ error_report("create_device_tree() failed");
+ exit(1);
+ }
+ }
+
+ qemu_fdt_setprop_string(mc->fdt, "/", "model", "mips-virtio,qemu");
+ qemu_fdt_setprop_string(mc->fdt, "/", "compatible", "mips-virtio");
+ qemu_fdt_setprop_cell(mc->fdt, "/", "#size-cells", 0x2);
+ qemu_fdt_setprop_cell(mc->fdt, "/", "#address-cells", 0x2);
+
+ clk_ph = qemu_fdt_alloc_phandle(mc->fdt);
+ qemu_fdt_add_subnode(mc->fdt, "/cpu-refclk");
+ qemu_fdt_setprop_string(mc->fdt, "/cpu-refclk", "compatible",
+ "fixed-clock");
+ qemu_fdt_setprop_cell(mc->fdt, "/cpu-refclk", "#clock-cells", 0x0);
+ qemu_fdt_setprop_cell(mc->fdt, "/cpu-refclk", "clock-frequency",
+ VIRT_CPU_REF_CLK_FREQ);
+ qemu_fdt_setprop_string(mc->fdt, "/cpu-refclk", "clock-output-names",
+ "cpu-refclk");
+ qemu_fdt_setprop_cell(mc->fdt, "/cpu-refclk", "phandle", clk_ph);
+
+ qemu_fdt_add_subnode(mc->fdt, "/cpus");
+ qemu_fdt_setprop_cell(mc->fdt, "/cpus", "#size-cells", 0x0);
+ qemu_fdt_setprop_cell(mc->fdt, "/cpus", "#address-cells", 0x1);
+
+ for (int cpu = 0; cpu < mc->smp.cpus; cpu++) {
+ char *name = g_strdup_printf("/cpus/cpu@%d", cpu);
+ qemu_fdt_add_subnode(mc->fdt, name);
+ qemu_fdt_setprop_string(mc->fdt, name, "compatible", "img,mips");
+ qemu_fdt_setprop_string(mc->fdt, name, "status", "okay");
+ qemu_fdt_setprop_cell(mc->fdt, name, "reg", cpu);
+ qemu_fdt_setprop_string(mc->fdt, name, "device_type", "cpu");
+ qemu_fdt_setprop_cell(mc->fdt, name, "clocks", clk_ph);
+ g_free(name);
+ }
+
+ create_fdt_memory(s, memmap);
+
+ qemu_fdt_add_subnode(mc->fdt, "/soc");
+ qemu_fdt_setprop(mc->fdt, "/soc", "ranges", NULL, 0);
+ qemu_fdt_setprop_string(mc->fdt, "/soc", "compatible", "simple-bus");
+ qemu_fdt_setprop_cell(mc->fdt, "/soc", "#size-cells", 0x2);
+ qemu_fdt_setprop_cell(mc->fdt, "/soc", "#address-cells", 0x2);
+
+ irq_ph = qemu_fdt_alloc_phandle(mc->fdt);
+
+ create_fdt_cpc(s, memmap, clk_ph, irq_ph);
+ create_fdt_virtio(s, memmap, irq_ph);
+ create_fdt_pcie(s, memmap, irq_ph);
+ create_fdt_reset(s, memmap);
+ create_fdt_uart(s, memmap, irq_ph);
+ create_fdt_rtc(s, memmap, irq_ph);
+ create_fdt_flash(s, memmap);
+ create_fdt_fw_cfg(s, memmap);
+
+update_bootargs:
+ if (cmdline && *cmdline) {
+ qemu_fdt_setprop_string(mc->fdt, "/chosen", "bootargs", cmdline);
+ }
+
+ /* Pass seed to RNG */
+ qemu_guest_getrandom_nofail(rng_seed, sizeof(rng_seed));
+ qemu_fdt_setprop(mc->fdt, "/chosen", "rng-seed", rng_seed,
+ sizeof(rng_seed));
+ create_fdt_hypervisor(s);
+}
+
+static void gen_firmware(void *p, hwaddr kernel_entry, hwaddr fdt_addr)
+{
+ uint64_t regaddr;
+ const MemMapEntry *memmap = virt_memmap;
+
+ /* Move CM GCRs */
+ regaddr = cpu_mips_phys_to_kseg1(NULL, GCR_BASE_ADDR + GCR_BASE_OFS),
+ bl_gen_write_ulong(&p, regaddr, memmap[VIRT_CM].base);
+
+ /* Move & enable GIC GCRs */
+ regaddr = cpu_mips_phys_to_kseg1(NULL, memmap[VIRT_CM].base +
+ GCR_GIC_BASE_OFS),
+ bl_gen_write_ulong(&p, regaddr,
+ memmap[VIRT_GIC].base | GCR_GIC_BASE_GICEN_MSK);
+
+ /* Move & enable CPC GCRs */
+ regaddr = cpu_mips_phys_to_kseg1(NULL, memmap[VIRT_CM].base +
+ GCR_CPC_BASE_OFS),
+ bl_gen_write_ulong(&p, regaddr,
+ memmap[VIRT_CPC].base | GCR_CPC_BASE_CPCEN_MSK);
+
+ /*
+ * Setup argument registers to follow the UHI boot protocol:
+ *
+ * a0/$4 = -2
+ * a1/$5 = virtual address of FDT
+ * a2/$6 = 0
+ * a3/$7 = 0
+ */
+ bl_gen_jump_kernel(&p,
+ true, 0, true, (int32_t)-2,
+ true, fdt_addr, true, 0, true, 0,
+ kernel_entry);
+}
+
+static void virt_map_memory(MemoryRegion *sysmem, MemoryRegion *ram,
+ hwaddr ram_size, hwaddr low_size, hwaddr high_base)
+{
+ MemoryRegion *low_alias = g_new(MemoryRegion, 1);
+
+ memory_region_init_alias(low_alias, NULL, "mips_virt.lomem", ram, 0,
+ low_size);
+
+ memory_region_add_subregion(sysmem, 0, low_alias);
+
+ if (ram_size > low_size) {
+ MemoryRegion *high_alias = g_new(MemoryRegion, 1);
+ memory_region_init_alias(high_alias, NULL, "mips_virt.himem", ram,
+ low_size, ram_size - low_size);
+ memory_region_add_subregion(sysmem, high_base, high_alias);
+ }
+}
+
+static void virt_rom_init(MIPSVirtState *s, MemoryRegion *sysmem)
+{
+ MemoryRegion *boot_alias = g_new(MemoryRegion, 1);
+ s->rom = g_new(MemoryRegion, 1);
+ memory_region_init_ram(s->rom, NULL, "mips_virt.rom",
+ virt_memmap[VIRT_ROM].size, &error_fatal);
+ memory_region_add_subregion(sysmem, virt_memmap[VIRT_ROM_BOOT].base, s->rom);
+ memory_region_init_alias(boot_alias, NULL, "mips_virt.rom_boot", s->rom,
+ 0, virt_memmap[VIRT_ROM_BOOT].size);
+ memory_region_add_subregion(sysmem, virt_memmap[VIRT_ROM_BOOT].base,
+ boot_alias);
+}
+
+#define VIRT_FLASH_SECTOR_SIZE (256 * KiB)
+
+static void virt_flash_init(MIPSVirtState *s, hwaddr base, hwaddr size)
+{
+ DriveInfo *dinfo;
+#if TARGET_BIG_ENDIAN
+ int be = 1;
+#else
+ int be = 0;
+#endif
+
+ dinfo = drive_get(IF_PFLASH, 0, 0);
+ s->flash = pflash_cfi01_register(base, "mips_virt.flash", size,
+ dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
+ VIRT_FLASH_SECTOR_SIZE, 4, 0x89, 0x18, 0x00, 0x00, be);
+}
+
+static inline DeviceState *gpex_pcie_init(MIPSVirtState *s,
+ MemoryRegion *sys_mem,
+ hwaddr ecam_base, hwaddr ecam_size,
+ hwaddr mmio_base, hwaddr mmio_size,
+ hwaddr pio_base)
+{
+ DeviceState *dev;
+ MemoryRegion *ecam_alias, *ecam_reg;
+ MemoryRegion *mmio_alias, *mmio_reg;
+ qemu_irq irq;
+ int i;
+
+ dev = qdev_new(TYPE_GPEX_HOST);
+
+ sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
+
+ ecam_alias = g_new0(MemoryRegion, 1);
+ ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0);
+ memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam", ecam_reg, 0,
+ ecam_size);
+ memory_region_add_subregion(get_system_memory(), ecam_base, ecam_alias);
+
+ mmio_alias = g_new0(MemoryRegion, 1);
+ mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1);
+ memory_region_init_alias(mmio_alias, OBJECT(dev), "pcie-mmio", mmio_reg,
+ mmio_base, mmio_size);
+ memory_region_add_subregion(get_system_memory(), mmio_base, mmio_alias);
+
+ for (i = 0; i < GPEX_NUM_IRQS; i++) {
+ irq = get_cps_irq(s->cps, PCIE_IRQ + i);
+
+ sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, irq);
+ gpex_set_irq_num(GPEX_HOST(dev), i, PCIE_IRQ + i);
+ }
+
+ return dev;
+}
+
+static FWCfgState *create_fw_cfg(const MachineState *mc)
+{
+ hwaddr base = virt_memmap[VIRT_FW_CFG].base;
+ FWCfgState *fw_cfg;
+
+ fw_cfg = fw_cfg_init_mem_wide(base + 8, base, 8, base + 16,
+ &address_space_memory);
+ fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)mc->smp.cpus);
+
+ return fw_cfg;
+}
+
+static void create_platform_bus(MIPSVirtState *s)
+{
+ DeviceState *dev;
+ SysBusDevice *sysbus;
+ const MemMapEntry *memmap = virt_memmap;
+ int i;
+ MemoryRegion *sysmem = get_system_memory();
+
+ dev = qdev_new(TYPE_PLATFORM_BUS_DEVICE);
+ dev->id = g_strdup(TYPE_PLATFORM_BUS_DEVICE);
+ qdev_prop_set_uint32(dev, "num_irqs", VIRT_PLATFORM_BUS_NUM_IRQS);
+ qdev_prop_set_uint32(dev, "mmio_size", memmap[VIRT_PLATFORM_BUS].size);
+ sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
+ s->platform_bus_dev = dev;
+
+ sysbus = SYS_BUS_DEVICE(dev);
+ for (i = 0; i < VIRT_PLATFORM_BUS_NUM_IRQS; i++) {
+ qemu_irq irq = get_cps_irq(s->cps, VIRT_PLATFORM_BUS_IRQ + i);
+ sysbus_connect_irq(sysbus, i, irq);
+ }
+
+ memory_region_add_subregion(sysmem, memmap[VIRT_PLATFORM_BUS].base,
+ sysbus_mmio_get_region(sysbus, 0));
+}
+
+static void virt_machine_done(Notifier *notifier, void *data)
+{
+ MIPSVirtState *s = container_of(notifier, MIPSVirtState, machine_done);
+ MachineState *machine = MACHINE(s);
+ int ret, dt_size;
+ bool firmware_loaded = false;
+ /* Leave some space for exception vector */
+ hwaddr dtb_paddr = virt_memmap[VIRT_LOMEM].base + 0x1000;
+
+ if (machine->firmware) {
+ char *fname;
+ int fw_size;
+
+ fname = qemu_find_file(QEMU_FILE_TYPE_BIOS, machine->firmware);
+ if (!fname && !qtest_enabled()) {
+ error_report("Could not find ROM image '%s'", machine->firmware);
+ exit(1);
+ }
+ fw_size = load_image_mr(fname, s->rom);
+ if (fw_size == -1) {
+ error_report("unable to load firmware image '%s'", fname);
+ exit(1);
+ }
+ g_free(fname);
+ firmware_loaded = true;
+ }
+
+ s->fw_cfg = create_fw_cfg(machine);
+ rom_set_fw(s->fw_cfg);
+
+ if (machine->kernel_filename) {
+ if (firmware_loaded) {
+ /* Just pass those files via fw_cfg */
+ load_image_to_fw_cfg(s->fw_cfg, FW_CFG_KERNEL_SIZE,
+ FW_CFG_KERNEL_DATA, machine->kernel_filename,
+ true);
+ load_image_to_fw_cfg(s->fw_cfg, FW_CFG_INITRD_SIZE,
+ FW_CFG_INITRD_DATA, machine->initrd_filename,
+ false);
+
+ if (machine->kernel_cmdline) {
+ fw_cfg_add_i32(s->fw_cfg, FW_CFG_CMDLINE_SIZE,
+ strlen(machine->kernel_cmdline) + 1);
+ fw_cfg_add_string(s->fw_cfg, FW_CFG_CMDLINE_DATA,
+ machine->kernel_cmdline);
+ }
+ } else {
+ uint64_t kernel_entry, kernel_high;
+ ssize_t size;
+
+ size = load_elf(machine->kernel_filename, NULL,
+ cpu_mips_kseg0_to_phys, NULL, &kernel_entry, NULL,
+ &kernel_high, NULL, 0, EM_MIPS, 1, 0);
+
+ if (size == -1) {
+ error_report("could not load kernel '%s'",
+ machine->kernel_filename);
+ exit(1);
+ }
+
+ if (machine->initrd_filename) {
+ const char *name = machine->initrd_filename;
+ hwaddr kernel_end = cpu_mips_kseg0_to_phys(NULL, kernel_high);
+ hwaddr start =
+ MAX(64 * MiB, QEMU_ALIGN_UP(kernel_end + 1, 1 * MiB));
+ hwaddr maxsz =
+ MIN(machine->ram_size, virt_memmap[VIRT_LOMEM].size) -
+ start;
+
+ size = load_ramdisk(name, start, maxsz);
+ if (size == -1) {
+ size = load_image_targphys(name, start, maxsz);
+ if (size == -1) {
+ error_report("could not load ramdisk '%s'", name);
+ exit(1);
+ }
+ }
+ qemu_fdt_setprop_cell(machine->fdt, "/chosen",
+ "linux,initrd-start", start);
+ qemu_fdt_setprop_cell(machine->fdt, "/chosen",
+ "linux,initrd-end", start + size);
+ }
+ gen_firmware(memory_region_get_ram_ptr(s->rom), kernel_entry,
+ cpu_mips_phys_to_kseg0(NULL, dtb_paddr));
+ }
+ }
+
+ memory_region_set_readonly(s->rom, true);
+ ret = fdt_pack(machine->fdt);
+ /* Should only fail if we've built a corrupted tree */
+ g_assert(ret == 0);
+ /* Update dt_size after pack */
+ dt_size = fdt_totalsize(machine->fdt);
+ /* copy in the device tree */
+ qemu_fdt_dumpdtb(machine->fdt, dt_size);
+ fw_cfg_add_file(s->fw_cfg, "etc/fdt", machine->fdt, dt_size);
+ rom_add_blob_fixed("dtb", machine->fdt, dt_size, dtb_paddr);
+ qemu_register_reset_nosnapshotload(qemu_fdt_randomize_seeds,
+ rom_ptr(dtb_paddr, dt_size));
+}
+
+static void virt_machine_init(MachineState *machine)
+{
+ MIPSVirtState *s = MIPS_VIRT_MACHINE(machine);
+ MemoryRegion *system_memory = get_system_memory();
+ const MemMapEntry *memmap = virt_memmap;
+ int i;
+
+ s->cpuclk = clock_new(OBJECT(machine), "cpu-refclk");
+ clock_set_hz(s->cpuclk, VIRT_CPU_REF_CLK_FREQ);
+
+ s->cps = MIPS_CPS(qdev_new(TYPE_MIPS_CPS));
+ object_property_set_str(OBJECT(s->cps), "cpu-type", machine->cpu_type,
+ &error_fatal);
+ object_property_set_int(OBJECT(s->cps), "num-core", machine->smp.cpus,
+ &error_fatal);
+ qdev_connect_clock_in(DEVICE(s->cps), "clk-in", s->cpuclk);
+ sysbus_realize(SYS_BUS_DEVICE(s->cps), &error_fatal);
+ sysbus_mmio_map_overlap(SYS_BUS_DEVICE(s->cps), 0, 0, 1);
+
+
+ virt_map_memory(system_memory, machine->ram, machine->ram_size,
+ virt_memmap[VIRT_LOMEM].size,
+ virt_memmap[VIRT_HIGHMEM].base);
+
+ virt_rom_init(s, system_memory);
+ virt_flash_init(s, memmap[VIRT_FLASH].base, memmap[VIRT_FLASH].size);
+
+ serial_mm_init(system_memory, memmap[VIRT_UART0].base, 0,
+ get_cps_irq(s->cps, UART0_IRQ), 399193, serial_hd(0),
+ DEVICE_LITTLE_ENDIAN);
+
+ for (i = 0; i < VIRTIO_COUNT; i++) {
+ sysbus_create_simple("virtio-mmio",
+ memmap[VIRT_VIRTIO].base +
+ i * memmap[VIRT_VIRTIO].size,
+ get_cps_irq(s->cps, VIRTIO_IRQ + i));
+ }
+
+ gpex_pcie_init(s, system_memory, memmap[VIRT_PCIE_ECAM].base,
+ memmap[VIRT_PCIE_ECAM].size, memmap[VIRT_PCIE_MMIO].base,
+ memmap[VIRT_PCIE_MMIO].size, memmap[VIRT_PCIE_PIO].base);
+
+ create_platform_bus(s);
+
+ sysbus_create_simple(TYPE_GOLDFISH_RTC, memmap[VIRT_RTC].base,
+ get_cps_irq(s->cps, RTC_IRQ));
+
+ sysbus_create_simple(TYPE_MIPS_TRICKBOX, memmap[VIRT_TRICKBOX].base, NULL);
+
+ create_fdt(s, memmap, machine->kernel_cmdline);
+ s->machine_done.notify = virt_machine_done;
+ qemu_add_machine_init_done_notifier(&s->machine_done);
+}
+
+static void virt_machine_instance_init(Object *obj)
+{
+}
+
+static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine,
+ DeviceState *dev)
+{
+ MachineClass *mc = MACHINE_GET_CLASS(machine);
+
+ if (device_is_dynamic_sysbus(mc, dev)) {
+ return HOTPLUG_HANDLER(machine);
+ }
+ return NULL;
+}
+
+static void virt_machine_device_plug_cb(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp)
+{
+ MIPSVirtState *s = MIPS_VIRT_MACHINE(hotplug_dev);
+
+ if (s->platform_bus_dev) {
+ MachineClass *mc = MACHINE_GET_CLASS(s);
+
+ if (device_is_dynamic_sysbus(mc, dev)) {
+ platform_bus_link_device(PLATFORM_BUS_DEVICE(s->platform_bus_dev),
+ SYS_BUS_DEVICE(dev));
+ }
+ }
+}
+
+static void virt_machine_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+ HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
+
+ mc->desc = "MIPS VirtIO board";
+ mc->init = virt_machine_init;
+ mc->max_cpus = 16;
+#ifdef TARGET_MIPS64
+ mc->default_cpu_type = MIPS_CPU_TYPE_NAME("I6400");
+#else
+ mc->default_cpu_type = MIPS_CPU_TYPE_NAME("P5600");
+#endif
+ mc->default_ram_id = "mips_virt_board.ram";
+ mc->block_default_type = IF_VIRTIO;
+ mc->default_display = "virtio";
+ mc->no_cdrom = 1;
+ mc->get_hotplug_handler = virt_machine_get_hotplug_handler;
+ mc->pci_allow_0_address = true;
+
+ hc->plug = virt_machine_device_plug_cb;
+
+ machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE);
+#ifdef CONFIG_TPM
+ machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);
+#endif
+}
+
+static const TypeInfo virt_machine_typeinfo = {
+ .name = MACHINE_TYPE_NAME("virt"),
+ .parent = TYPE_MACHINE,
+ .class_init = virt_machine_class_init,
+ .instance_init = virt_machine_instance_init,
+ .instance_size = sizeof(MIPSVirtState),
+ .interfaces = (InterfaceInfo[]){ { TYPE_HOTPLUG_HANDLER }, {} },
+};
+
+static void virt_machine_init_register_types(void)
+{
+ type_register_static(&virt_machine_typeinfo);
+}
+
+type_init(virt_machine_init_register_types)
MIPS virt board is design to utilize existing VirtIO infrastures but also comptitable with MIPS's existing internal simulation tools. It includes virtio-pci, virtio-mmio, pcie gpex, flash rom, fw_cfg, goldfish-rtc and MIPS CPS system. It should be able to cooperate with any MIPS CPU cores. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> --- v1: - Rename to virt board - Convert BIOS flash to ROM - Cleanups v2: - Fix fdt flash - Remove UP variant --- MAINTAINERS | 7 + configs/devices/mips-softmmu/common.mak | 1 + docs/system/target-mips.rst | 22 + hw/mips/Kconfig | 17 + hw/mips/meson.build | 1 + hw/mips/virt.c | 916 ++++++++++++++++++++++++ 6 files changed, 964 insertions(+) create mode 100644 hw/mips/virt.c