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Re: [Qemu-devel] [PATCH v4] hw/arm: Add arm SBSA reference machine
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From: |
Hongbo Zhang |
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Subject: |
Re: [Qemu-devel] [PATCH v4] hw/arm: Add arm SBSA reference machine |
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Date: |
Wed, 30 Jan 2019 16:34:10 +0800 |
On Tue, 29 Jan 2019 at 19:29, Ard Biesheuvel <address@hidden> wrote:
>
> Responding to an old thread ...
>
> On Thu, 15 Nov 2018 at 17:05, Peter Maydell <address@hidden> wrote:
> >
> > On 19 October 2018 at 09:55, Hongbo Zhang <address@hidden> wrote:
> > > For the Aarch64, there is one machine 'virt', it is primarily meant to
> > > run on KVM and execute virtualization workloads, but we need an
> > > environment as faithful as possible to physical hardware, for supporting
> > > firmware and OS development for pysical Aarch64 machines.
> > >
> > > This patch introduces new machine type 'sbsa-ref' with main features:
> > > - Based on 'virt' machine type.
> > > - CPU type cortex-a57.
> > > - EL2 and EL3 are enabled by default.
> > > - GIC version 3 only.
> > > - Re-designed memory map.
> > > - AHCI controller attached to system bus.
> > > - EHCI controller attached to system bus.
> > > - CDROM and hard disc on AHCI bus.
> > > - USB mouse and key board.
> > > - E1000E ethernet card on PCIE bus.
> > > - VGA display adaptor on PCIE bus.
> > > - No virtio deivces.
> > > - No paravirtualized fw_cfg device.
> > > - No ACPI table supplied.
> > > - Only minimal device tree nodes.
> > >
> > > Arm Trusted Firmware and UEFI porting to this are done accordingly.
> > >
> > > Signed-off-by: Hongbo Zhang <address@hidden>
> >
> > Hi; I've had a quick run through this patch. My comments
> > below are mostly about there still being a lot of code
> > here which has been copied from virt.c but which you do
> > not need.
> >
> > If after you've done that this patch is still more than
> > about 500 lines long, I would recommend that you split it
> > up into coherent pieces, to make it easier to review.
> >
> > > ---
> > > hw/arm/Makefile.objs | 2 +-
> > > hw/arm/sbsa-ref.c | 937
> > > ++++++++++++++++++++++++++++++++++++++++++++++++++
> > > include/hw/arm/virt.h | 2 +
> > > 3 files changed, 940 insertions(+), 1 deletion(-)
> > > create mode 100644 hw/arm/sbsa-ref.c
> > >
> > > diff --git a/hw/arm/Makefile.objs b/hw/arm/Makefile.objs
> > > index d51fcec..a8895eb 100644
> > > --- a/hw/arm/Makefile.objs
> > > +++ b/hw/arm/Makefile.objs
> > > @@ -1,4 +1,4 @@
> > > -obj-y += boot.o virt.o sysbus-fdt.o
> > > +obj-y += boot.o virt.o sbsa-ref.o sysbus-fdt.o
> > > obj-$(CONFIG_ACPI) += virt-acpi-build.o
> > > obj-$(CONFIG_DIGIC) += digic_boards.o
> > > obj-$(CONFIG_EXYNOS4) += exynos4_boards.o
> > > diff --git a/hw/arm/sbsa-ref.c b/hw/arm/sbsa-ref.c
> > > new file mode 100644
> > > index 0000000..28ebb3a
> > > --- /dev/null
> > > +++ b/hw/arm/sbsa-ref.c
> > > @@ -0,0 +1,937 @@
> > > +/*
> > > + * ARM SBSA Reference Platform emulation
> > > + *
> > > + * Copyright (c) 2018 Linaro Limited
> > > + * Written by Hongbo Zhang <address@hidden>
> > > + *
> > > + * Based on hw/arm/virt.c
> > > + *
> > > + * This program is free software; you can redistribute it and/or modify
> > > it
> > > + * under the terms and conditions of the GNU General Public License,
> > > + * version 2 or later, as published by the Free Software Foundation.
> > > + *
> > > + * This program is distributed in the hope it will be useful, but WITHOUT
> > > + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> > > + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
> > > for
> > > + * more details.
> > > + *
> > > + * You should have received a copy of the GNU General Public License
> > > along with
> > > + * this program. If not, see <http://www.gnu.org/licenses/>.
> > > + */
> > > +
> > > +#include "qemu/osdep.h"
> > > +#include "qapi/error.h"
> > > +#include "hw/arm/virt.h"
> > > +#include "hw/devices.h"
> > > +#include "net/net.h"
> > > +#include "sysemu/device_tree.h"
> > > +#include "sysemu/numa.h"
> > > +#include "hw/loader.h"
> > > +#include "qemu/error-report.h"
> > > +#include "hw/pci-host/gpex.h"
> > > +#include "hw/arm/sysbus-fdt.h"
> > > +#include "hw/arm/fdt.h"
> > > +#include "hw/intc/arm_gic.h"
> > > +#include "hw/intc/arm_gicv3_common.h"
> > > +#include "kvm_arm.h"
> > > +#include "hw/ide/internal.h"
> > > +#include "hw/ide/ahci_internal.h"
> > > +#include "hw/usb.h"
> > > +#include "qemu/units.h"
> > > +
> > > +#define NUM_IRQS 256
> > > +
> > > +#define SATA_NUM_PORTS 6
> > > +
> > > +#define RAMLIMIT_GB 255
> > > +#define RAMLIMIT_BYTES (RAMLIMIT_GB * GiB)
> >
> > You probably don't want to stick yourself with the same
> > ram limits that the virt board has, especially since you
> > don't need to care about AArch32. Strongly consider
> > putting the RAM somwhere that lets you get up to a
> > maximum value that matches what we might expect in
> > server-class hardware.
> >
> > > +
> > > +static const MemMapEntry sbsa_ref_memmap[] = {
> > > + /* Space up to 0x8000000 is reserved for a boot ROM */
> > > + [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 },
> > > + /* The space in between here is reserved for GICv3 CPU/vCPU/HYP */
> > > + /* This redistributor space allows up to 2*64kB*123 CPUs */
> >
> > You don't need to do the split-redistributor layout that
> > "virt" does because you have no backwards compatibility
> > concerns. So make the space for redistributors big enough
> > to fit more CPUs in (at least 512, or more if you expect
> > this board to be used in future for development of a
> > software stack that handles more).
> >
> > > + [VIRT_GIC_REDIST] = { 0x080A0000, 0x00F60000 },
> > > + [VIRT_UART] = { 0x09000000, 0x00001000 },
> > > + [VIRT_RTC] = { 0x09010000, 0x00001000 },
> > > + [VIRT_GPIO] = { 0x09030000, 0x00001000 },
> > > + [VIRT_SECURE_UART] = { 0x09040000, 0x00001000 },
> > > + [VIRT_AHCI] = { 0x09050000, 0x00010000 },
> > > + [VIRT_EHCI] = { 0x09060000, 0x00010000 },
> > > + [VIRT_SECURE_MEM] = { 0x0e000000, 0x01000000 },
> > > + [VIRT_PCIE_MMIO] = { 0x10000000, 0x7fff0000 },
> > > + [VIRT_PCIE_PIO] = { 0x8fff0000, 0x00010000 },
> > > + [VIRT_PCIE_ECAM] = { 0x90000000, 0x10000000 },
> > > + /* Second PCIe window, 508GB wide at the 4GB boundary */
> > > + [VIRT_PCIE_MMIO_HIGH] = { 0x100000000ULL, 0x7F00000000ULL },
> >
> > Again, you don't need the layout that "virt" has to
> > satisfy 32-bit guests and backwards compatibility. You
> > can just have a single large MMIO window.
> >
>
> Apologies for not spotting this at the time this was posted.
>
> The MMIO32 window is not there for the benefit of 32-bit only CPUs. It
> is there for the benefit of PCIe devices with 32-bit memory BARs
> which, given that our PCI MMIO is 1:1 mapped between the CPU and PCI
> address spaces, require a 32-bit addressable CPU mapping. (PCIe
> permits so-called 'legacy' endpoints to have 32-bit MMIO BARs)
>
> So please, reinstate the MMIO32 window, but keep the other one as well.
>
So we still use the old VIRT_PCIE_MMIO starting from fixed address
0x10000000, or anywhere within 4G is OK?
> Thanks,
> Ard.
>
> >
> > > + [VIRT_MEM] = { 0x8000000000ULL, RAMLIMIT_BYTES },
> > > +};
> > > +
> > > +static const int sbsa_ref_irqmap[] = {
> > > + [VIRT_UART] = 1,
> > > + [VIRT_RTC] = 2,
> > > + [VIRT_PCIE] = 3, /* ... to 6 */
> > > + [VIRT_GPIO] = 7,
> > > + [VIRT_SECURE_UART] = 8,
> > > + [VIRT_AHCI] = 9,
> > > + [VIRT_EHCI] = 10,
> > > +};
> > > +
> > > +static void create_fdt(VirtMachineState *vms)
> > > +{
> > > + void *fdt = create_device_tree(&vms->fdt_size);
> > > +
> > > + if (!fdt) {
> > > + error_report("create_device_tree() failed");
> > > + exit(1);
> > > + }
> > > +
> > > + vms->fdt = fdt;
> > > +
> > > + /* Header */
> > > + qemu_fdt_setprop_string(fdt, "/", "compatible", "linux,dummy-virt");
> > > + qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2);
> > > + qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2);
> > > +
> > > + /* /chosen must exist for load_dtb to fill in necessary properties
> > > later */
> > > + qemu_fdt_add_subnode(fdt, "/chosen");
> > > +
> > > + if (have_numa_distance) {
> > > + int size = nb_numa_nodes * nb_numa_nodes * 3 * sizeof(uint32_t);
> > > + uint32_t *matrix = g_malloc0(size);
> > > + int idx, i, j;
> > > +
> > > + for (i = 0; i < nb_numa_nodes; i++) {
> > > + for (j = 0; j < nb_numa_nodes; j++) {
> > > + idx = (i * nb_numa_nodes + j) * 3;
> > > + matrix[idx + 0] = cpu_to_be32(i);
> > > + matrix[idx + 1] = cpu_to_be32(j);
> > > + matrix[idx + 2] = cpu_to_be32(numa_info[i].distance[j]);
> > > + }
> > > + }
> > > +
> > > + qemu_fdt_add_subnode(fdt, "/distance-map");
> > > + qemu_fdt_setprop_string(fdt, "/distance-map", "compatible",
> > > + "numa-distance-map-v1");
> > > + qemu_fdt_setprop(fdt, "/distance-map", "distance-matrix",
> > > + matrix, size);
> > > + g_free(matrix);
> > > + }
> > > +}
> > > +
> > > +static void fdt_add_cpu_nodes(const VirtMachineState *vms)
> > > +{
> > > + int cpu;
> > > + const MachineState *ms = MACHINE(vms);
> > > +
> > > + qemu_fdt_add_subnode(vms->fdt, "/cpus");
> > > + /* #address-cells should be 2 for Arm v8 64-bit systems */
> > > + qemu_fdt_setprop_cell(vms->fdt, "/cpus", "#address-cells", 2);
> > > + qemu_fdt_setprop_cell(vms->fdt, "/cpus", "#size-cells", 0x0);
> > > +
> > > + for (cpu = vms->smp_cpus - 1; cpu >= 0; cpu--) {
> > > + char *nodename = g_strdup_printf("/cpus/address@hidden", cpu);
> > > + ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(cpu));
> > > + CPUState *cs = CPU(armcpu);
> > > +
> > > + qemu_fdt_add_subnode(vms->fdt, nodename);
> > > + qemu_fdt_setprop_string(vms->fdt, nodename, "device_type",
> > > "cpu");
> > > + qemu_fdt_setprop_string(vms->fdt, nodename, "compatible",
> > > + armcpu->dtb_compatible);
> > > +
> > > + if (vms->psci_conduit != QEMU_PSCI_CONDUIT_DISABLED
> > > + && vms->smp_cpus > 1) {
> > > + qemu_fdt_setprop_string(vms->fdt, nodename,
> > > + "enable-method", "psci");
> > > + }
> > > +
> > > + qemu_fdt_setprop_u64(vms->fdt, nodename, "reg",
> > > armcpu->mp_affinity);
> > > +
> > > + if (ms->possible_cpus->cpus[cs->cpu_index].props.has_node_id) {
> > > + qemu_fdt_setprop_cell(vms->fdt, nodename, "numa-node-id",
> > > + ms->possible_cpus->cpus[cs->cpu_index].props.node_id);
> > > + }
> > > +
> > > + g_free(nodename);
> > > + }
> > > +}
> > > +
> > > +static void fdt_add_gic_node(VirtMachineState *vms)
> > > +{
> > > + char *nodename;
> > > + int nb_redist_regions = virt_gicv3_redist_region_count(vms);
> > > +
> > > + vms->gic_phandle = qemu_fdt_alloc_phandle(vms->fdt);
> > > + qemu_fdt_setprop_cell(vms->fdt, "/", "interrupt-parent",
> > > vms->gic_phandle);
> > > +
> > > + nodename = g_strdup_printf("/address@hidden" PRIx64,
> > > + vms->memmap[VIRT_GIC_DIST].base);
> > > + qemu_fdt_add_subnode(vms->fdt, nodename);
> > > + qemu_fdt_setprop_cell(vms->fdt, nodename, "#interrupt-cells", 3);
> > > + qemu_fdt_setprop(vms->fdt, nodename, "interrupt-controller", NULL,
> > > 0);
> > > + qemu_fdt_setprop_cell(vms->fdt, nodename, "#address-cells", 0x2);
> > > + qemu_fdt_setprop_cell(vms->fdt, nodename, "#size-cells", 0x2);
> > > + qemu_fdt_setprop(vms->fdt, nodename, "ranges", NULL, 0);
> > > +
> > > + /* Only GICv3 created */
> > > + qemu_fdt_setprop_string(vms->fdt, nodename, "compatible",
> > > + "arm,gic-v3");
> > > +
> > > + qemu_fdt_setprop_cell(vms->fdt, nodename,
> > > + "#redistributor-regions", nb_redist_regions);
> > > +
> > > + if (nb_redist_regions == 1) {
> > > + qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg",
> > > + 2, vms->memmap[VIRT_GIC_DIST].base,
> > > + 2, vms->memmap[VIRT_GIC_DIST].size,
> > > + 2,
> > > vms->memmap[VIRT_GIC_REDIST].base,
> > > + 2,
> > > vms->memmap[VIRT_GIC_REDIST].size);
> > > + } else {
> > > + qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg",
> > > + 2, vms->memmap[VIRT_GIC_DIST].base,
> > > + 2, vms->memmap[VIRT_GIC_DIST].size,
> > > + 2,
> > > vms->memmap[VIRT_GIC_REDIST].base,
> > > + 2,
> > > vms->memmap[VIRT_GIC_REDIST].size,
> > > + 2,
> > > vms->memmap[VIRT_GIC_REDIST2].base,
> > > + 2,
> > > vms->memmap[VIRT_GIC_REDIST2].size);
> > > + }
> > > +
> > > + if (vms->virt) {
> > > + qemu_fdt_setprop_cells(vms->fdt, nodename, "interrupts",
> > > + GIC_FDT_IRQ_TYPE_PPI,
> > > ARCH_GICV3_MAINT_IRQ,
> > > + GIC_FDT_IRQ_FLAGS_LEVEL_HI);
> > > + }
> > > +
> > > + qemu_fdt_setprop_cell(vms->fdt, nodename, "phandle",
> > > vms->gic_phandle);
> > > + g_free(nodename);
> > > +}
> >
> > This is still generating a lot of device tree nodes.
> > I thought we had agreed that we were going to just have
> > a minimal device tree that says "here is the RAM" and nothing
> > else ?
> >
> > > +
> > > +static void create_gic(VirtMachineState *vms, qemu_irq *pic)
> > > +{
> > > + /* We create a standalone GIC */
> > > + DeviceState *gicdev;
> > > + SysBusDevice *gicbusdev;
> > > + const char *gictype;
> > > + int i;
> > > + uint32_t nb_redist_regions = 0;
> > > + uint32_t redist0_capacity, redist0_count;
> > > +
> > > + /* Only GICv3 created */
> > > + gictype = gicv3_class_name();
> > > +
> > > + gicdev = qdev_create(NULL, gictype);
> > > + qdev_prop_set_uint32(gicdev, "revision", 3);
> > > + qdev_prop_set_uint32(gicdev, "num-cpu", smp_cpus);
> > > + /* Note that the num-irq property counts both internal and external
> > > + * interrupts; there are always 32 of the former (mandated by GIC
> > > spec).
> > > + */
> > > + qdev_prop_set_uint32(gicdev, "num-irq", NUM_IRQS + 32);
> > > + if (!kvm_irqchip_in_kernel()) {
> > > + qdev_prop_set_bit(gicdev, "has-security-extensions",
> > > vms->secure);
> > > + }
> > > +
> > > + redist0_capacity =
> > > + vms->memmap[VIRT_GIC_REDIST].size / GICV3_REDIST_SIZE;
> > > + redist0_count = MIN(smp_cpus, redist0_capacity);
> > > +
> > > + nb_redist_regions = virt_gicv3_redist_region_count(vms);
> > > +
> > > + qdev_prop_set_uint32(gicdev, "len-redist-region-count",
> > > + nb_redist_regions);
> > > + qdev_prop_set_uint32(gicdev, "redist-region-count[0]",
> > > redist0_count);
> > > +
> > > + if (nb_redist_regions == 2) {
> > > + uint32_t redist1_capacity =
> > > + vms->memmap[VIRT_GIC_REDIST2].size /
> > > GICV3_REDIST_SIZE;
> > > +
> > > + qdev_prop_set_uint32(gicdev, "redist-region-count[1]",
> > > + MIN(smp_cpus - redist0_count, redist1_capacity));
> > > + }
> > > +
> > > + qdev_init_nofail(gicdev);
> > > + gicbusdev = SYS_BUS_DEVICE(gicdev);
> > > + sysbus_mmio_map(gicbusdev, 0, vms->memmap[VIRT_GIC_DIST].base);
> > > + sysbus_mmio_map(gicbusdev, 1, vms->memmap[VIRT_GIC_REDIST].base);
> > > + if (nb_redist_regions == 2) {
> > > + sysbus_mmio_map(gicbusdev, 2,
> > > vms->memmap[VIRT_GIC_REDIST2].base);
> > > + }
> > > +
> > > + /* Wire the outputs from each CPU's generic timer and the GICv3
> > > + * maintenance interrupt signal to the appropriate GIC PPI inputs,
> > > + * and the GIC's IRQ/FIQ/VIRQ/VFIQ interrupt outputs to the CPU's
> > > inputs.
> > > + */
> > > + for (i = 0; i < smp_cpus; i++) {
> > > + DeviceState *cpudev = DEVICE(qemu_get_cpu(i));
> > > + int ppibase = NUM_IRQS + i * GIC_INTERNAL + GIC_NR_SGIS;
> > > + int irq;
> > > + /* Mapping from the output timer irq lines from the CPU to the
> > > + * GIC PPI inputs we use for the virt board.
> > > + */
> > > + const int timer_irq[] = {
> > > + [GTIMER_PHYS] = ARCH_TIMER_NS_EL1_IRQ,
> > > + [GTIMER_VIRT] = ARCH_TIMER_VIRT_IRQ,
> > > + [GTIMER_HYP] = ARCH_TIMER_NS_EL2_IRQ,
> > > + [GTIMER_SEC] = ARCH_TIMER_S_EL1_IRQ,
> > > + };
> > > +
> > > + for (irq = 0; irq < ARRAY_SIZE(timer_irq); irq++) {
> > > + qdev_connect_gpio_out(cpudev, irq,
> > > + qdev_get_gpio_in(gicdev,
> > > + ppibase +
> > > timer_irq[irq]));
> > > + }
> > > +
> > > + qdev_connect_gpio_out_named(cpudev,
> > > "gicv3-maintenance-interrupt", 0,
> > > + qdev_get_gpio_in(gicdev, ppibase
> > > + +
> > > ARCH_GICV3_MAINT_IRQ));
> > > + qdev_connect_gpio_out_named(cpudev, "pmu-interrupt", 0,
> > > + qdev_get_gpio_in(gicdev, ppibase
> > > + + VIRTUAL_PMU_IRQ));
> > > +
> > > + sysbus_connect_irq(gicbusdev, i, qdev_get_gpio_in(cpudev,
> > > ARM_CPU_IRQ));
> > > + sysbus_connect_irq(gicbusdev, i + smp_cpus,
> > > + qdev_get_gpio_in(cpudev, ARM_CPU_FIQ));
> > > + sysbus_connect_irq(gicbusdev, i + 2 * smp_cpus,
> > > + qdev_get_gpio_in(cpudev, ARM_CPU_VIRQ));
> > > + sysbus_connect_irq(gicbusdev, i + 3 * smp_cpus,
> > > + qdev_get_gpio_in(cpudev, ARM_CPU_VFIQ));
> > > + }
> > > +
> > > + for (i = 0; i < NUM_IRQS; i++) {
> > > + pic[i] = qdev_get_gpio_in(gicdev, i);
> > > + }
> > > +
> > > + fdt_add_gic_node(vms);
> > > +}
> > > +
> > > +static void create_uart(const VirtMachineState *vms, qemu_irq *pic, int
> > > uart,
> > > + MemoryRegion *mem, Chardev *chr)
> > > +{
> > > + hwaddr base = vms->memmap[uart].base;
> > > + int irq = vms->irqmap[uart];
> > > + DeviceState *dev = qdev_create(NULL, "pl011");
> > > + SysBusDevice *s = SYS_BUS_DEVICE(dev);
> > > +
> > > + qdev_prop_set_chr(dev, "chardev", chr);
> > > + qdev_init_nofail(dev);
> > > + memory_region_add_subregion(mem, base,
> > > + sysbus_mmio_get_region(s, 0));
> > > + sysbus_connect_irq(s, 0, pic[irq]);
> > > +}
> > > +
> > > +static void create_rtc(const VirtMachineState *vms, qemu_irq *pic)
> > > +{
> > > + hwaddr base = vms->memmap[VIRT_RTC].base;
> > > + int irq = vms->irqmap[VIRT_RTC];
> > > +
> > > + sysbus_create_simple("pl031", base, pic[irq]);
> > > +}
> > > +
> > > +static void create_ahci(const VirtMachineState *vms, qemu_irq *pic)
> > > +{
> > > + hwaddr base = vms->memmap[VIRT_AHCI].base;
> > > + int irq = vms->irqmap[VIRT_AHCI];
> > > + DeviceState *dev;
> > > + DriveInfo *hd[SATA_NUM_PORTS];
> > > + SysbusAHCIState *sysahci;
> > > + AHCIState *ahci;
> > > + int i;
> > > +
> > > + dev = qdev_create(NULL, "sysbus-ahci");
> > > + qdev_prop_set_uint32(dev, "num-ports", SATA_NUM_PORTS);
> > > + qdev_init_nofail(dev);
> > > + sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
> > > + sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[irq]);
> > > +
> > > + sysahci = SYSBUS_AHCI(dev);
> > > + ahci = &sysahci->ahci;
> > > + ide_drive_get(hd, ARRAY_SIZE(hd));
> > > + for (i = 0; i < ahci->ports; i++) {
> > > + if (hd[i] == NULL) {
> > > + continue;
> > > + }
> > > + ide_create_drive(&ahci->dev[i].port, 0, hd[i]);
> > > + }
> > > +}
> > > +
> > > +static void create_ehci(const VirtMachineState *vms, qemu_irq *pic)
> > > +{
> > > + hwaddr base = vms->memmap[VIRT_EHCI].base;
> > > + int irq = vms->irqmap[VIRT_EHCI];
> > > + USBBus *usb_bus;
> > > +
> > > + sysbus_create_simple("exynos4210-ehci-usb", base, pic[irq]);
> >
> > What is this using the exynos4210 USB device for? That
> > is definitely not correct for a generic board.
> >
> > > +
> > > + usb_bus = usb_bus_find(-1);
> > > + usb_create_simple(usb_bus, "usb-kbd");
> > > + usb_create_simple(usb_bus, "usb-mouse");
> >
> > Don't create USB devices by default -- let the user do it on
> > the command line.
> >
> > > +}
> > > +
> > > +static DeviceState *gpio_key_dev;
> > > +static void sbsa_ref_powerdown_req(Notifier *n, void *opaque)
> > > +{
> > > + /* use gpio Pin 3 for power button event */
> > > + qemu_set_irq(qdev_get_gpio_in(gpio_key_dev, 0), 1);
> > > +}
> > > +
> > > +static Notifier sbsa_ref_powerdown_notifier = {
> > > + .notify = sbsa_ref_powerdown_req
> > > +};
> > > +
> > > +static void create_gpio(const VirtMachineState *vms, qemu_irq *pic)
> > > +{
> > > + DeviceState *pl061_dev;
> > > + hwaddr base = vms->memmap[VIRT_GPIO].base;
> > > + int irq = vms->irqmap[VIRT_GPIO];
> > > +
> > > + pl061_dev = sysbus_create_simple("pl061", base, pic[irq]);
> > > +
> > > + gpio_key_dev = sysbus_create_simple("gpio-key", -1,
> > > + qdev_get_gpio_in(pl061_dev, 3));
> > > +
> > > + /* connect powerdown request */
> > > + qemu_register_powerdown_notifier(&sbsa_ref_powerdown_notifier);
> > > +}
> > > +
> > > +static void create_one_flash(const char *name, hwaddr flashbase,
> > > + hwaddr flashsize, const char *file,
> > > + MemoryRegion *sysmem)
> > > +{
> > > + /* Create and map a single flash device. We use the same
> > > + * parameters as the flash devices on the Versatile Express board.
> > > + */
> > > + DriveInfo *dinfo = drive_get_next(IF_PFLASH);
> > > + DeviceState *dev = qdev_create(NULL, "cfi.pflash01");
> > > + SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
> > > + const uint64_t sectorlength = 256 * 1024;
> > > +
> > > + if (dinfo) {
> > > + qdev_prop_set_drive(dev, "drive", blk_by_legacy_dinfo(dinfo),
> > > + &error_abort);
> > > + }
> > > +
> > > + qdev_prop_set_uint32(dev, "num-blocks", flashsize / sectorlength);
> > > + qdev_prop_set_uint64(dev, "sector-length", sectorlength);
> > > + qdev_prop_set_uint8(dev, "width", 4);
> > > + qdev_prop_set_uint8(dev, "device-width", 2);
> > > + qdev_prop_set_bit(dev, "big-endian", false);
> > > + qdev_prop_set_uint16(dev, "id0", 0x89);
> > > + qdev_prop_set_uint16(dev, "id1", 0x18);
> > > + qdev_prop_set_uint16(dev, "id2", 0x00);
> > > + qdev_prop_set_uint16(dev, "id3", 0x00);
> > > + qdev_prop_set_string(dev, "name", name);
> > > + qdev_init_nofail(dev);
> > > +
> > > + memory_region_add_subregion(sysmem, flashbase,
> > > +
> > > sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0));
> > > +
> > > + if (file) {
> > > + char *fn;
> > > + int image_size;
> > > +
> > > + if (drive_get(IF_PFLASH, 0, 0)) {
> > > + error_report("The contents of the first flash device may be "
> > > + "specified with -bios or with -drive
> > > if=pflash... "
> > > + "but you cannot use both options at once");
> > > + exit(1);
> > > + }
> > > + fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, file);
> > > + if (!fn) {
> > > + error_report("Could not find ROM image '%s'", file);
> > > + exit(1);
> > > + }
> > > + image_size = load_image_mr(fn, sysbus_mmio_get_region(sbd, 0));
> > > + g_free(fn);
> > > + if (image_size < 0) {
> > > + error_report("Could not load ROM image '%s'", file);
> > > + exit(1);
> > > + }
> > > + }
> > > +}
> > > +
> > > +static void create_flash(const VirtMachineState *vms,
> > > + MemoryRegion *sysmem,
> > > + MemoryRegion *secure_sysmem)
> > > +{
> > > + /* Create two flash devices to fill the VIRT_FLASH space in the
> > > memmap.
> > > + * Any file passed via -bios goes in the first of these.
> > > + * sysmem is the system memory space. secure_sysmem is the secure
> > > view
> > > + * of the system, and the first flash device should be made visible
> > > only
> > > + * there. The second flash device is visible to both secure and
> > > nonsecure.
> > > + * If sysmem == secure_sysmem this means there is no separate Secure
> > > + * address space and both flash devices are generally visible.
> > > + */
> > > + hwaddr flashsize = vms->memmap[VIRT_FLASH].size / 2;
> > > + hwaddr flashbase = vms->memmap[VIRT_FLASH].base;
> > > +
> > > + create_one_flash("sbsa-ref.flash0", flashbase, flashsize,
> > > + bios_name, secure_sysmem);
> > > + create_one_flash("sbsa-ref.flash1", flashbase + flashsize, flashsize,
> > > + NULL, sysmem);
> > > +}
> > > +
> > > +static void create_smmu(const VirtMachineState *vms, qemu_irq *pic,
> > > + PCIBus *bus)
> > > +{
> > > + int irq = vms->irqmap[VIRT_SMMU];
> > > + int i;
> > > + hwaddr base = vms->memmap[VIRT_SMMU].base;
> > > + DeviceState *dev;
> > > +
> > > + if (vms->iommu != VIRT_IOMMU_SMMUV3) {
> > > + return;
> > > + }
> > > +
> > > + dev = qdev_create(NULL, "arm-smmuv3");
> > > +
> > > + object_property_set_link(OBJECT(dev), OBJECT(bus), "primary-bus",
> > > + &error_abort);
> > > + qdev_init_nofail(dev);
> > > + sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
> > > + for (i = 0; i < NUM_SMMU_IRQS; i++) {
> > > + sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, pic[irq + i]);
> > > + }
> > > +}
> > > +
> > > +static void create_pcie(VirtMachineState *vms, qemu_irq *pic)
> > > +{
> > > + hwaddr base_mmio = vms->memmap[VIRT_PCIE_MMIO].base;
> > > + hwaddr size_mmio = vms->memmap[VIRT_PCIE_MMIO].size;
> > > + hwaddr base_mmio_high = vms->memmap[VIRT_PCIE_MMIO_HIGH].base;
> > > + hwaddr size_mmio_high = vms->memmap[VIRT_PCIE_MMIO_HIGH].size;
> > > + hwaddr base_pio = vms->memmap[VIRT_PCIE_PIO].base;
> > > + hwaddr base_ecam, size_ecam;
> > > + int irq = vms->irqmap[VIRT_PCIE];
> > > + MemoryRegion *mmio_alias;
> > > + MemoryRegion *mmio_reg;
> > > + MemoryRegion *ecam_alias;
> > > + MemoryRegion *ecam_reg;
> > > + DeviceState *dev;
> > > + int i, ecam_id;
> > > + PCIHostState *pci;
> > > +
> > > + dev = qdev_create(NULL, TYPE_GPEX_HOST);
> > > + qdev_init_nofail(dev);
> > > +
> > > + ecam_id = VIRT_ECAM_ID(vms->highmem_ecam);
> > > + base_ecam = vms->memmap[ecam_id].base;
> > > + size_ecam = vms->memmap[ecam_id].size;
> > > + /* 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);
> > > +
> > > + if (vms->highmem) {
> > > + /* Map high MMIO space */
> > > + MemoryRegion *high_mmio_alias = g_new0(MemoryRegion, 1);
> > > +
> > > + memory_region_init_alias(high_mmio_alias, OBJECT(dev),
> > > "pcie-mmio-high",
> > > + mmio_reg, base_mmio_high,
> > > size_mmio_high);
> > > + memory_region_add_subregion(get_system_memory(), base_mmio_high,
> > > + high_mmio_alias);
> > > + }
> > > +
> > > + /* Map IO port space */
> > > + sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, base_pio);
> > > +
> > > + for (i = 0; i < GPEX_NUM_IRQS; i++) {
> > > + sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, pic[irq + i]);
> > > + gpex_set_irq_num(GPEX_HOST(dev), i, irq + 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("e1000e");
> > > + }
> > > +
> > > + pci_nic_init_nofail(nd, pci->bus, nd->model, NULL);
> > > + }
> > > + }
> > > +
> > > + pci_create_simple(pci->bus, -1, "VGA");
> > > +
> > > + if (vms->iommu) {
> > > + create_smmu(vms, pic, pci->bus);
> > > + }
> > > +}
> > > +
> > > +static void create_secure_ram(VirtMachineState *vms,
> > > + MemoryRegion *secure_sysmem)
> > > +{
> > > + MemoryRegion *secram = g_new(MemoryRegion, 1);
> > > + hwaddr base = vms->memmap[VIRT_SECURE_MEM].base;
> > > + hwaddr size = vms->memmap[VIRT_SECURE_MEM].size;
> > > +
> > > + memory_region_init_ram(secram, NULL, "sbsa-ref.secure-ram", size,
> > > + &error_fatal);
> > > + memory_region_add_subregion(secure_sysmem, base, secram);
> > > +}
> > > +
> > > +static void *sbsa_ref_dtb(const struct arm_boot_info *binfo, int
> > > *fdt_size)
> > > +{
> > > + const VirtMachineState *board = container_of(binfo, VirtMachineState,
> > > + bootinfo);
> > > +
> > > + *fdt_size = board->fdt_size;
> > > + return board->fdt;
> > > +}
> > > +
> > > +static
> > > +void sbsa_ref_machine_done(Notifier *notifier, void *data)
> > > +{
> > > + VirtMachineState *vms = container_of(notifier, VirtMachineState,
> > > + machine_done);
> > > + ARMCPU *cpu = ARM_CPU(first_cpu);
> > > + struct arm_boot_info *info = &vms->bootinfo;
> > > + AddressSpace *as = arm_boot_address_space(cpu, info);
> > > +
> > > + if (arm_load_dtb(info->dtb_start, info, info->dtb_limit, as) < 0) {
> > > + exit(1);
> > > + }
> > > +}
> >
> > The virt board needs a machine-done notifier because it has
> > to add extra things to the DTB here. You don't, so you don't
> > need one. Don't set bootinfo.skip_dtb_autoload to true, and
> > then the boot.c code will do the arm_load_dtb() call for you.
> >
> > > +
> > > +static void sbsa_ref_init(MachineState *machine)
> > > +{
> > > + VirtMachineState *vms = VIRT_MACHINE(machine);
> > > + VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(machine);
> > > + MachineClass *mc = MACHINE_GET_CLASS(machine);
> > > + const CPUArchIdList *possible_cpus;
> > > + qemu_irq pic[NUM_IRQS];
> > > + MemoryRegion *sysmem = get_system_memory();
> > > + MemoryRegion *secure_sysmem = NULL;
> > > + int n, sbsa_max_cpus;
> > > + MemoryRegion *ram = g_new(MemoryRegion, 1);
> > > + bool firmware_loaded = bios_name || drive_get(IF_PFLASH, 0, 0);
> > > + bool aarch64 = true;
> > > +
> > > + if (strcmp(machine->cpu_type, ARM_CPU_TYPE_NAME("cortex-a57"))) {
> > > + error_report("sbsa-ref: CPU type %s not supported",
> > > machine->cpu_type);
> > > + exit(1);
> > > + }
> > > +
> > > + if (kvm_enabled()) {
> > > + error_report("sbsa-ref: KVM is not supported at this machine");
> > > + exit(1);
> > > + }
> > > +
> > > + if (machine->kernel_filename && firmware_loaded) {
> > > + error_report("sbsa-ref: No fw_cfg device on this machine, "
> > > + "so -kernel option is not supported when firmware
> > > loaded, "
> > > + "please load hard disk instead");
> > > + exit(1);
> > > + }
> >
> > If ther is no fw_cfg device, why does your memory map datastructure
> > have an entry for it earlier ?
> > > + [VIRT_FW_CFG] = { 0x09020000, 0x00000018 },
> >
> > > +
> > > + /* If we have an EL3 boot ROM then the assumption is that it will
> > > + * implement PSCI itself, so disable QEMU's internal implementation
> > > + * so it doesn't get in the way. Instead of starting secondary
> > > + * CPUs in PSCI powerdown state we will start them all running and
> > > + * let the boot ROM sort them out.
> > > + * The usual case is that we do use QEMU's PSCI implementation;
> > > + * if the guest has EL2 then we will use SMC as the conduit,
> > > + * and otherwise we will use HVC (for backwards compatibility and
> > > + * because if we're using KVM then we must use HVC).
> > > + */
> > > + if (vms->secure && firmware_loaded) {
> > > + vms->psci_conduit = QEMU_PSCI_CONDUIT_DISABLED;
> > > + } else if (vms->virt) {
> > > + vms->psci_conduit = QEMU_PSCI_CONDUIT_SMC;
> > > + } else {
> > > + vms->psci_conduit = QEMU_PSCI_CONDUIT_HVC;
> > > + }
> >
> > Do you actually intend this to work in all these cases? I
> > thought the intention was "always start the boot rom in EL3"
> > for this board, like the real hardware would. In that case, most
> > of these if clauses are dead code.
> >
> > > +
> > > + /* Only GICv3 is uesd in this machine */
> > > + sbsa_max_cpus = vms->memmap[VIRT_GIC_REDIST].size /
> > > GICV3_REDIST_SIZE;
> > > + sbsa_max_cpus += vms->memmap[VIRT_GIC_REDIST2].size /
> > > GICV3_REDIST_SIZE;
> > > +
> > > + if (max_cpus > sbsa_max_cpus) {
> > > + error_report("Number of SMP CPUs requested (%d) exceeds max CPUs
> > > "
> > > + "supported by machine 'sbsa-ref' (%d)",
> > > + max_cpus, sbsa_max_cpus);
> > > + exit(1);
> > > + }
> > > +
> > > + vms->smp_cpus = smp_cpus;
> > > +
> > > + if (machine->ram_size > vms->memmap[VIRT_MEM].size) {
> > > + error_report("sbsa-ref: cannot model more than %dGB RAM",
> > > RAMLIMIT_GB);
> > > + exit(1);
> > > + }
> > > +
> > > + if (vms->secure) {
> > > + /* The Secure view of the world is the same as the NonSecure,
> > > + * but with a few extra devices. Create it as a container region
> > > + * containing the system memory at low priority; any secure-only
> > > + * devices go in at higher priority and take precedence.
> > > + */
> > > + secure_sysmem = g_new(MemoryRegion, 1);
> > > + memory_region_init(secure_sysmem, OBJECT(machine),
> > > "secure-memory",
> > > + UINT64_MAX);
> > > + memory_region_add_subregion_overlap(secure_sysmem, 0, sysmem,
> > > -1);
> > > + }
> >
> > Again, unless you intentionally want to support both "has EL3"
> > and "does not have EL3" configs for this board, you don't need
> > to do this conditionally.
> >
> > > +
> > > + create_fdt(vms);
> > > +
> > > + possible_cpus = mc->possible_cpu_arch_ids(machine);
> > > + for (n = 0; n < possible_cpus->len; n++) {
> > > + Object *cpuobj;
> > > + CPUState *cs;
> > > +
> > > + if (n >= smp_cpus) {
> > > + break;
> > > + }
> > > +
> > > + cpuobj = object_new(possible_cpus->cpus[n].type);
> > > + object_property_set_int(cpuobj, possible_cpus->cpus[n].arch_id,
> > > + "mp-affinity", NULL);
> > > +
> > > + cs = CPU(cpuobj);
> > > + cs->cpu_index = n;
> > > +
> > > + numa_cpu_pre_plug(&possible_cpus->cpus[cs->cpu_index],
> > > DEVICE(cpuobj),
> > > + &error_fatal);
> > > +
> > > + aarch64 &= object_property_get_bool(cpuobj, "aarch64", NULL);
> > > +
> > > + if (!vms->secure) {
> > > + object_property_set_bool(cpuobj, false, "has_el3", NULL);
> > > + }
> > > +
> > > + if (!vms->virt && object_property_find(cpuobj, "has_el2", NULL))
> > > {
> > > + object_property_set_bool(cpuobj, false, "has_el2", NULL);
> > > + }
> > > +
> > > + if (vms->psci_conduit != QEMU_PSCI_CONDUIT_DISABLED) {
> > > + object_property_set_int(cpuobj, vms->psci_conduit,
> > > + "psci-conduit", NULL);
> > > +
> > > + /* Secondary CPUs start in PSCI powered-down state */
> > > + if (n > 0) {
> > > + object_property_set_bool(cpuobj, true,
> > > + "start-powered-off", NULL);
> > > + }
> > > + }
> > > +
> > > + if (vmc->no_pmu && object_property_find(cpuobj, "pmu", NULL)) {
> > > + object_property_set_bool(cpuobj, false, "pmu", NULL);
> > > + }
> > > +
> > > + if (object_property_find(cpuobj, "reset-cbar", NULL)) {
> > > + object_property_set_int(cpuobj,
> > > vms->memmap[VIRT_CPUPERIPHS].base,
> > > + "reset-cbar", &error_abort);
> > > + }
> > > +
> > > + object_property_set_link(cpuobj, OBJECT(sysmem), "memory",
> > > + &error_abort);
> > > + if (vms->secure) {
> > > + object_property_set_link(cpuobj, OBJECT(secure_sysmem),
> > > + "secure-memory", &error_abort);
> > > + }
> > > +
> > > + object_property_set_bool(cpuobj, true, "realized", &error_fatal);
> > > + object_unref(cpuobj);
> > > + }
> > > + fdt_add_cpu_nodes(vms);
> > > +
> > > + memory_region_allocate_system_memory(ram, NULL, "sbsa-ref.ram",
> > > + machine->ram_size);
> > > + memory_region_add_subregion(sysmem, vms->memmap[VIRT_MEM].base, ram);
> > > +
> > > + create_flash(vms, sysmem, secure_sysmem ? secure_sysmem : sysmem);
> > > +
> > > + create_gic(vms, pic);
> > > +
> > > + create_uart(vms, pic, VIRT_UART, sysmem, serial_hd(0));
> > > +
> > > + if (vms->secure) {
> > > + create_secure_ram(vms, secure_sysmem);
> > > + create_uart(vms, pic, VIRT_SECURE_UART, secure_sysmem,
> > > serial_hd(1));
> > > + }
> > > +
> > > + vms->highmem_ecam &= vms->highmem && (!firmware_loaded || aarch64);
> > > +
> > > + create_rtc(vms, pic);
> > > +
> > > + create_pcie(vms, pic);
> > > +
> > > + create_gpio(vms, pic);
> > > +
> > > + create_ahci(vms, pic);
> > > +
> > > + create_ehci(vms, pic);
> > > +
> > > + vms->bootinfo.ram_size = machine->ram_size;
> > > + vms->bootinfo.kernel_filename = machine->kernel_filename;
> > > + vms->bootinfo.kernel_cmdline = machine->kernel_cmdline;
> > > + vms->bootinfo.initrd_filename = machine->initrd_filename;
> > > + vms->bootinfo.nb_cpus = smp_cpus;
> > > + vms->bootinfo.board_id = -1;
> > > + vms->bootinfo.loader_start = vms->memmap[VIRT_MEM].base;
> > > + vms->bootinfo.get_dtb = sbsa_ref_dtb;
> > > + vms->bootinfo.skip_dtb_autoload = true;
> > > + vms->bootinfo.firmware_loaded = firmware_loaded;
> > > + arm_load_kernel(ARM_CPU(first_cpu), &vms->bootinfo);
> > > +
> > > + vms->machine_done.notify = sbsa_ref_machine_done;
> > > + qemu_add_machine_init_done_notifier(&vms->machine_done);
> > > +}
> > > +
> > > +static bool sbsa_ref_get_secure(Object *obj, Error **errp)
> > > +{
> > > + VirtMachineState *vms = VIRT_MACHINE(obj);
> > > +
> > > + return vms->secure;
> > > +}
> > > +
> > > +static void sbsa_ref_set_secure(Object *obj, bool value, Error **errp)
> > > +{
> > > + VirtMachineState *vms = VIRT_MACHINE(obj);
> > > +
> > > + vms->secure = value;
> > > +}
> > > +
> > > +static bool sbsa_ref_get_virt(Object *obj, Error **errp)
> > > +{
> > > + VirtMachineState *vms = VIRT_MACHINE(obj);
> > > +
> > > + return vms->virt;
> > > +}
> > > +
> > > +static void sbsa_ref_set_virt(Object *obj, bool value, Error **errp)
> > > +{
> > > + VirtMachineState *vms = VIRT_MACHINE(obj);
> > > +
> > > + vms->virt = value;
> > > +}
> > > +
> > > +static CpuInstanceProperties
> > > +sbsa_ref_cpu_index_to_props(MachineState *ms, unsigned cpu_index)
> > > +{
> > > + MachineClass *mc = MACHINE_GET_CLASS(ms);
> > > + const CPUArchIdList *possible_cpus = mc->possible_cpu_arch_ids(ms);
> > > +
> > > + assert(cpu_index < possible_cpus->len);
> > > + return possible_cpus->cpus[cpu_index].props;
> > > +}
> > > +
> > > +static int64_t
> > > +sbsa_ref_get_default_cpu_node_id(const MachineState *ms, int idx)
> > > +{
> > > + return idx % nb_numa_nodes;
> > > +}
> > > +
> > > +static uint64_t sbsa_ref_cpu_mp_affinity(VirtMachineState *vms, int idx)
> > > +{
> > > + uint8_t clustersz = ARM_DEFAULT_CPUS_PER_CLUSTER;
> > > + VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
> > > +
> > > + if (!vmc->disallow_affinity_adjustment) {
> > > + /* Only GICv3 is used in this machine */
> > > + clustersz = GICV3_TARGETLIST_BITS;
> > > + }
> > > + return arm_cpu_mp_affinity(idx, clustersz);
> > > +}
> > > +
> > > +static const CPUArchIdList *sbsa_ref_possible_cpu_arch_ids(MachineState
> > > *ms)
> > > +{
> > > + int n;
> > > + VirtMachineState *vms = VIRT_MACHINE(ms);
> > > +
> > > + if (ms->possible_cpus) {
> > > + assert(ms->possible_cpus->len == max_cpus);
> > > + return ms->possible_cpus;
> > > + }
> > > +
> > > + ms->possible_cpus = g_malloc0(sizeof(CPUArchIdList) +
> > > + sizeof(CPUArchId) * max_cpus);
> > > + ms->possible_cpus->len = max_cpus;
> > > + for (n = 0; n < ms->possible_cpus->len; n++) {
> > > + ms->possible_cpus->cpus[n].type = ms->cpu_type;
> > > + ms->possible_cpus->cpus[n].arch_id =
> > > + sbsa_ref_cpu_mp_affinity(vms, n);
> > > + ms->possible_cpus->cpus[n].props.has_thread_id = true;
> > > + ms->possible_cpus->cpus[n].props.thread_id = n;
> > > + }
> > > + return ms->possible_cpus;
> > > +}
> > > +
> > > +static void sbsa_ref_instance_init(Object *obj)
> > > +{
> > > + VirtMachineState *vms = VIRT_MACHINE(obj);
> > > +
> > > + vms->secure = true;
> > > + object_property_add_bool(obj, "secure", sbsa_ref_get_secure,
> > > + sbsa_ref_set_secure, NULL);
> > > + object_property_set_description(obj, "secure",
> > > + "Set on/off to enable/disable the
> > > ARM "
> > > + "Security Extensions (TrustZone)",
> > > + NULL);
> > > +
> > > + vms->virt = true;
> > > + object_property_add_bool(obj, "virtualization", sbsa_ref_get_virt,
> > > + sbsa_ref_set_virt, NULL);
> > > + object_property_set_description(obj, "virtualization",
> > > + "Set on/off to enable/disable
> > > emulating a "
> > > + "guest CPU which implements the ARM "
> > > + "Virtualization Extensions",
> > > + NULL);
> >
> > Drop the properties unless you need to actually support
> > all the different variations.
> >
> > > +
> > > + vms->highmem = true;
> > > + vms->iommu = VIRT_IOMMU_NONE;
> > > + vms->gic_version = 3;
> > > + vms->memmap = sbsa_ref_memmap;
> > > + vms->irqmap = sbsa_ref_irqmap;
> > > +}
> > > +
> > > +static void sbsa_ref_class_init(ObjectClass *oc, void *data)
> > > +{
> > > + MachineClass *mc = MACHINE_CLASS(oc);
> > > +
> > > + mc->init = sbsa_ref_init;
> > > + mc->max_cpus = 246;
> > > + mc->block_default_type = IF_IDE;
> > > + mc->no_cdrom = 1;
> > > + mc->pci_allow_0_address = true;
> > > + mc->minimum_page_bits = 12;
> > > + mc->possible_cpu_arch_ids = sbsa_ref_possible_cpu_arch_ids;
> > > + mc->cpu_index_to_instance_props = sbsa_ref_cpu_index_to_props;
> > > + mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a57");
> > > + mc->get_default_cpu_node_id = sbsa_ref_get_default_cpu_node_id;
> > > + mc->default_ram_size = 1 * GiB;
> > > + mc->default_cpus = 4;
> > > + mc->desc = "QEMU 'SBSA Reference' ARM Virtual Machine";
> > > +}
> > > +
> > > +static const TypeInfo sbsa_ref_info = {
> > > + .name = MACHINE_TYPE_NAME("sbsa-ref"),
> > > + .parent = TYPE_VIRT_MACHINE,
> > > + .instance_init = sbsa_ref_instance_init,
> > > + .class_init = sbsa_ref_class_init,
> > > +};
> > > +
> > > +static void sbsa_ref_machine_init(void)
> > > +{
> > > + type_register_static(&sbsa_ref_info);
> > > +}
> > > +
> > > +type_init(sbsa_ref_machine_init);
> > > diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
> > > index 9a870cc..f6c48be 100644
> > > --- a/include/hw/arm/virt.h
> > > +++ b/include/hw/arm/virt.h
> > > @@ -78,6 +78,8 @@ enum {
> > > VIRT_GPIO,
> > > VIRT_SECURE_UART,
> > > VIRT_SECURE_MEM,
> > > + VIRT_AHCI,
> > > + VIRT_EHCI,
> > > };
> > >
> > > typedef enum VirtIOMMUType {
> > > --
> >
> > thanks
> > -- PMM