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Diffstat (limited to 'hw/xtensa/virt.c')
| -rw-r--r-- | hw/xtensa/virt.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/hw/xtensa/virt.c b/hw/xtensa/virt.c new file mode 100644 index 0000000..b22dcf9 --- /dev/null +++ b/hw/xtensa/virt.c @@ -0,0 +1,135 @@ +/* + * Copyright (c) 2019, Max Filippov, Open Source and Linux Lab. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of the Open Source and Linux Lab nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "cpu.h" +#include "sysemu/reset.h" +#include "sysemu/sysemu.h" +#include "hw/boards.h" +#include "hw/loader.h" +#include "hw/pci-host/gpex.h" +#include "net/net.h" +#include "elf.h" +#include "exec/memory.h" +#include "exec/address-spaces.h" +#include "qemu/error-report.h" +#include "xtensa_memory.h" +#include "xtensa_sim.h" + +static void create_pcie(CPUXtensaState *env, int irq_base, hwaddr addr_base) +{ + hwaddr base_ecam = addr_base + 0x00100000; + hwaddr size_ecam = 0x03f00000; + hwaddr base_pio = addr_base + 0x00000000; + hwaddr size_pio = 0x00010000; + hwaddr base_mmio = addr_base + 0x04000000; + hwaddr size_mmio = 0x08000000; + + MemoryRegion *ecam_alias; + MemoryRegion *ecam_reg; + MemoryRegion *pio_alias; + MemoryRegion *pio_reg; + MemoryRegion *mmio_alias; + MemoryRegion *mmio_reg; + + DeviceState *dev; + PCIHostState *pci; + qemu_irq *extints; + int i; + + dev = qdev_create(NULL, TYPE_GPEX_HOST); + qdev_init_nofail(dev); + + /* Map only the first size_ecam bytes of ECAM space. */ + 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, size_ecam); + memory_region_add_subregion(get_system_memory(), base_ecam, ecam_alias); + + /* + * Map the MMIO window into system address space so as to expose + * the section of PCI MMIO space which starts at the same base address + * (ie 1:1 mapping for that part of PCI MMIO space visible through + * the window). + */ + 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, base_mmio, size_mmio); + memory_region_add_subregion(get_system_memory(), base_mmio, mmio_alias); + + /* Map IO port space. */ + pio_alias = g_new0(MemoryRegion, 1); + pio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 2); + memory_region_init_alias(pio_alias, OBJECT(dev), "pcie-pio", + pio_reg, 0, size_pio); + memory_region_add_subregion(get_system_memory(), base_pio, pio_alias); + + /* Connect IRQ lines. */ + extints = xtensa_get_extints(env); + + for (i = 0; i < GPEX_NUM_IRQS; i++) { + void *q = extints[irq_base + i]; + + sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, q); + gpex_set_irq_num(GPEX_HOST(dev), i, irq_base + i); + } + + pci = PCI_HOST_BRIDGE(dev); + if (pci->bus) { + for (i = 0; i < nb_nics; i++) { + NICInfo *nd = &nd_table[i]; + + if (!nd->model) { + nd->model = g_strdup("virtio"); + } + + pci_nic_init_nofail(nd, pci->bus, nd->model, NULL); + } + } +} + +static void xtensa_virt_init(MachineState *machine) +{ + XtensaCPU *cpu = xtensa_sim_common_init(machine); + CPUXtensaState *env = &cpu->env; + + create_pcie(env, 0, 0xf0000000); + xtensa_sim_load_kernel(cpu, machine); +} + +static void xtensa_virt_machine_init(MachineClass *mc) +{ + mc->desc = "virt machine (" XTENSA_DEFAULT_CPU_MODEL ")"; + mc->init = xtensa_virt_init; + mc->max_cpus = 32; + mc->default_cpu_type = XTENSA_DEFAULT_CPU_TYPE; +} + +DEFINE_MACHINE("virt", xtensa_virt_machine_init) |