diff options
Diffstat (limited to 'hw/arm/xlnx-versal-virt.c')
| -rw-r--r-- | hw/arm/xlnx-versal-virt.c | 494 |
1 files changed, 494 insertions, 0 deletions
diff --git a/hw/arm/xlnx-versal-virt.c b/hw/arm/xlnx-versal-virt.c new file mode 100644 index 0000000000..1e31a3f442 --- /dev/null +++ b/hw/arm/xlnx-versal-virt.c @@ -0,0 +1,494 @@ +/* + * Xilinx Versal Virtual board. + * + * Copyright (c) 2018 Xilinx Inc. + * Written by Edgar E. Iglesias + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 or + * (at your option) any later version. + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "qemu/error-report.h" +#include "qapi/error.h" +#include "sysemu/device_tree.h" +#include "exec/address-spaces.h" +#include "hw/boards.h" +#include "hw/sysbus.h" +#include "hw/arm/sysbus-fdt.h" +#include "hw/arm/fdt.h" +#include "cpu.h" +#include "hw/arm/xlnx-versal.h" + +#define TYPE_XLNX_VERSAL_VIRT_MACHINE MACHINE_TYPE_NAME("xlnx-versal-virt") +#define XLNX_VERSAL_VIRT_MACHINE(obj) \ + OBJECT_CHECK(VersalVirt, (obj), TYPE_XLNX_VERSAL_VIRT_MACHINE) + +typedef struct VersalVirt { + MachineState parent_obj; + + Versal soc; + MemoryRegion mr_ddr; + + void *fdt; + int fdt_size; + struct { + uint32_t gic; + uint32_t ethernet_phy[2]; + uint32_t clk_125Mhz; + uint32_t clk_25Mhz; + } phandle; + struct arm_boot_info binfo; + + struct { + bool secure; + } cfg; +} VersalVirt; + +static void fdt_create(VersalVirt *s) +{ + MachineClass *mc = MACHINE_GET_CLASS(s); + int i; + + s->fdt = create_device_tree(&s->fdt_size); + if (!s->fdt) { + error_report("create_device_tree() failed"); + exit(1); + } + + /* Allocate all phandles. */ + s->phandle.gic = qemu_fdt_alloc_phandle(s->fdt); + for (i = 0; i < ARRAY_SIZE(s->phandle.ethernet_phy); i++) { + s->phandle.ethernet_phy[i] = qemu_fdt_alloc_phandle(s->fdt); + } + s->phandle.clk_25Mhz = qemu_fdt_alloc_phandle(s->fdt); + s->phandle.clk_125Mhz = qemu_fdt_alloc_phandle(s->fdt); + + /* Create /chosen node for load_dtb. */ + qemu_fdt_add_subnode(s->fdt, "/chosen"); + + /* Header */ + qemu_fdt_setprop_cell(s->fdt, "/", "interrupt-parent", s->phandle.gic); + qemu_fdt_setprop_cell(s->fdt, "/", "#size-cells", 0x2); + qemu_fdt_setprop_cell(s->fdt, "/", "#address-cells", 0x2); + qemu_fdt_setprop_string(s->fdt, "/", "model", mc->desc); + qemu_fdt_setprop_string(s->fdt, "/", "compatible", "xlnx-versal-virt"); +} + +static void fdt_add_clk_node(VersalVirt *s, const char *name, + unsigned int freq_hz, uint32_t phandle) +{ + qemu_fdt_add_subnode(s->fdt, name); + qemu_fdt_setprop_cell(s->fdt, name, "phandle", phandle); + qemu_fdt_setprop_cell(s->fdt, name, "clock-frequency", freq_hz); + qemu_fdt_setprop_cell(s->fdt, name, "#clock-cells", 0x0); + qemu_fdt_setprop_string(s->fdt, name, "compatible", "fixed-clock"); + qemu_fdt_setprop(s->fdt, name, "u-boot,dm-pre-reloc", NULL, 0); +} + +static void fdt_add_cpu_nodes(VersalVirt *s, uint32_t psci_conduit) +{ + int i; + + qemu_fdt_add_subnode(s->fdt, "/cpus"); + qemu_fdt_setprop_cell(s->fdt, "/cpus", "#size-cells", 0x0); + qemu_fdt_setprop_cell(s->fdt, "/cpus", "#address-cells", 1); + + for (i = XLNX_VERSAL_NR_ACPUS - 1; i >= 0; i--) { + char *name = g_strdup_printf("/cpus/cpu@%d", i); + ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(i)); + + qemu_fdt_add_subnode(s->fdt, name); + qemu_fdt_setprop_cell(s->fdt, name, "reg", armcpu->mp_affinity); + if (psci_conduit != QEMU_PSCI_CONDUIT_DISABLED) { + qemu_fdt_setprop_string(s->fdt, name, "enable-method", "psci"); + } + qemu_fdt_setprop_string(s->fdt, name, "device_type", "cpu"); + qemu_fdt_setprop_string(s->fdt, name, "compatible", + armcpu->dtb_compatible); + g_free(name); + } +} + +static void fdt_add_gic_nodes(VersalVirt *s) +{ + char *nodename; + + nodename = g_strdup_printf("/gic@%x", MM_GIC_APU_DIST_MAIN); + qemu_fdt_add_subnode(s->fdt, nodename); + qemu_fdt_setprop_cell(s->fdt, nodename, "phandle", s->phandle.gic); + qemu_fdt_setprop_cells(s->fdt, nodename, "interrupts", + GIC_FDT_IRQ_TYPE_PPI, VERSAL_GIC_MAINT_IRQ, + GIC_FDT_IRQ_FLAGS_LEVEL_HI); + qemu_fdt_setprop(s->fdt, nodename, "interrupt-controller", NULL, 0); + qemu_fdt_setprop_sized_cells(s->fdt, nodename, "reg", + 2, MM_GIC_APU_DIST_MAIN, + 2, MM_GIC_APU_DIST_MAIN_SIZE, + 2, MM_GIC_APU_REDIST_0, + 2, MM_GIC_APU_REDIST_0_SIZE); + qemu_fdt_setprop_cell(s->fdt, nodename, "#interrupt-cells", 3); + qemu_fdt_setprop_string(s->fdt, nodename, "compatible", "arm,gic-v3"); +} + +static void fdt_add_timer_nodes(VersalVirt *s) +{ + const char compat[] = "arm,armv8-timer"; + uint32_t irqflags = GIC_FDT_IRQ_FLAGS_LEVEL_HI; + + qemu_fdt_add_subnode(s->fdt, "/timer"); + qemu_fdt_setprop_cells(s->fdt, "/timer", "interrupts", + GIC_FDT_IRQ_TYPE_PPI, VERSAL_TIMER_S_EL1_IRQ, irqflags, + GIC_FDT_IRQ_TYPE_PPI, VERSAL_TIMER_NS_EL1_IRQ, irqflags, + GIC_FDT_IRQ_TYPE_PPI, VERSAL_TIMER_VIRT_IRQ, irqflags, + GIC_FDT_IRQ_TYPE_PPI, VERSAL_TIMER_NS_EL2_IRQ, irqflags); + qemu_fdt_setprop(s->fdt, "/timer", "compatible", + compat, sizeof(compat)); +} + +static void fdt_add_uart_nodes(VersalVirt *s) +{ + uint64_t addrs[] = { MM_UART1, MM_UART0 }; + unsigned int irqs[] = { VERSAL_UART1_IRQ_0, VERSAL_UART0_IRQ_0 }; + const char compat[] = "arm,pl011\0arm,sbsa-uart"; + const char clocknames[] = "uartclk\0apb_pclk"; + int i; + + for (i = 0; i < ARRAY_SIZE(addrs); i++) { + char *name = g_strdup_printf("/uart@%" PRIx64, addrs[i]); + qemu_fdt_add_subnode(s->fdt, name); + qemu_fdt_setprop_cell(s->fdt, name, "current-speed", 115200); + qemu_fdt_setprop_cells(s->fdt, name, "clocks", + s->phandle.clk_125Mhz, s->phandle.clk_125Mhz); + qemu_fdt_setprop(s->fdt, name, "clock-names", + clocknames, sizeof(clocknames)); + + qemu_fdt_setprop_cells(s->fdt, name, "interrupts", + GIC_FDT_IRQ_TYPE_SPI, irqs[i], + GIC_FDT_IRQ_FLAGS_LEVEL_HI); + qemu_fdt_setprop_sized_cells(s->fdt, name, "reg", + 2, addrs[i], 2, 0x1000); + qemu_fdt_setprop(s->fdt, name, "compatible", + compat, sizeof(compat)); + qemu_fdt_setprop(s->fdt, name, "u-boot,dm-pre-reloc", NULL, 0); + + if (addrs[i] == MM_UART0) { + /* Select UART0. */ + qemu_fdt_setprop_string(s->fdt, "/chosen", "stdout-path", name); + } + g_free(name); + } +} + +static void fdt_add_fixed_link_nodes(VersalVirt *s, char *gemname, + uint32_t phandle) +{ + char *name = g_strdup_printf("%s/fixed-link", gemname); + + qemu_fdt_add_subnode(s->fdt, name); + qemu_fdt_setprop_cell(s->fdt, name, "phandle", phandle); + qemu_fdt_setprop(s->fdt, name, "full-duplex", NULL, 0); + qemu_fdt_setprop_cell(s->fdt, name, "speed", 1000); + g_free(name); +} + +static void fdt_add_gem_nodes(VersalVirt *s) +{ + uint64_t addrs[] = { MM_GEM1, MM_GEM0 }; + unsigned int irqs[] = { VERSAL_GEM1_IRQ_0, VERSAL_GEM0_IRQ_0 }; + const char clocknames[] = "pclk\0hclk\0tx_clk\0rx_clk"; + const char compat_gem[] = "cdns,zynqmp-gem\0cdns,gem"; + int i; + + for (i = 0; i < ARRAY_SIZE(addrs); i++) { + char *name = g_strdup_printf("/ethernet@%" PRIx64, addrs[i]); + qemu_fdt_add_subnode(s->fdt, name); + + fdt_add_fixed_link_nodes(s, name, s->phandle.ethernet_phy[i]); + qemu_fdt_setprop_string(s->fdt, name, "phy-mode", "rgmii-id"); + qemu_fdt_setprop_cell(s->fdt, name, "phy-handle", + s->phandle.ethernet_phy[i]); + qemu_fdt_setprop_cells(s->fdt, name, "clocks", + s->phandle.clk_25Mhz, s->phandle.clk_25Mhz, + s->phandle.clk_25Mhz, s->phandle.clk_25Mhz); + qemu_fdt_setprop(s->fdt, name, "clock-names", + clocknames, sizeof(clocknames)); + qemu_fdt_setprop_cells(s->fdt, name, "interrupts", + GIC_FDT_IRQ_TYPE_SPI, irqs[i], + GIC_FDT_IRQ_FLAGS_LEVEL_HI, + GIC_FDT_IRQ_TYPE_SPI, irqs[i], + GIC_FDT_IRQ_FLAGS_LEVEL_HI); + qemu_fdt_setprop_sized_cells(s->fdt, name, "reg", + 2, addrs[i], 2, 0x1000); + qemu_fdt_setprop(s->fdt, name, "compatible", + compat_gem, sizeof(compat_gem)); + qemu_fdt_setprop_cell(s->fdt, name, "#address-cells", 1); + qemu_fdt_setprop_cell(s->fdt, name, "#size-cells", 0); + g_free(name); + } +} + +static void fdt_nop_memory_nodes(void *fdt, Error **errp) +{ + Error *err = NULL; + char **node_path; + int n = 0; + + node_path = qemu_fdt_node_unit_path(fdt, "memory", &err); + if (err) { + error_propagate(errp, err); + return; + } + while (node_path[n]) { + if (g_str_has_prefix(node_path[n], "/memory")) { + qemu_fdt_nop_node(fdt, node_path[n]); + } + n++; + } + g_strfreev(node_path); +} + +static void fdt_add_memory_nodes(VersalVirt *s, void *fdt, uint64_t ram_size) +{ + /* Describes the various split DDR access regions. */ + static const struct { + uint64_t base; + uint64_t size; + } addr_ranges[] = { + { MM_TOP_DDR, MM_TOP_DDR_SIZE }, + { MM_TOP_DDR_2, MM_TOP_DDR_2_SIZE }, + { MM_TOP_DDR_3, MM_TOP_DDR_3_SIZE }, + { MM_TOP_DDR_4, MM_TOP_DDR_4_SIZE } + }; + uint64_t mem_reg_prop[8] = {0}; + uint64_t size = ram_size; + Error *err = NULL; + char *name; + int i; + + fdt_nop_memory_nodes(fdt, &err); + if (err) { + error_report_err(err); + return; + } + + name = g_strdup_printf("/memory@%x", MM_TOP_DDR); + for (i = 0; i < ARRAY_SIZE(addr_ranges) && size; i++) { + uint64_t mapsize; + + mapsize = size < addr_ranges[i].size ? size : addr_ranges[i].size; + + mem_reg_prop[i * 2] = addr_ranges[i].base; + mem_reg_prop[i * 2 + 1] = mapsize; + size -= mapsize; + } + qemu_fdt_add_subnode(fdt, name); + qemu_fdt_setprop_string(fdt, name, "device_type", "memory"); + + switch (i) { + case 1: + qemu_fdt_setprop_sized_cells(fdt, name, "reg", + 2, mem_reg_prop[0], + 2, mem_reg_prop[1]); + break; + case 2: + qemu_fdt_setprop_sized_cells(fdt, name, "reg", + 2, mem_reg_prop[0], + 2, mem_reg_prop[1], + 2, mem_reg_prop[2], + 2, mem_reg_prop[3]); + break; + case 3: + qemu_fdt_setprop_sized_cells(fdt, name, "reg", + 2, mem_reg_prop[0], + 2, mem_reg_prop[1], + 2, mem_reg_prop[2], + 2, mem_reg_prop[3], + 2, mem_reg_prop[4], + 2, mem_reg_prop[5]); + break; + case 4: + qemu_fdt_setprop_sized_cells(fdt, name, "reg", + 2, mem_reg_prop[0], + 2, mem_reg_prop[1], + 2, mem_reg_prop[2], + 2, mem_reg_prop[3], + 2, mem_reg_prop[4], + 2, mem_reg_prop[5], + 2, mem_reg_prop[6], + 2, mem_reg_prop[7]); + break; + default: + g_assert_not_reached(); + } + g_free(name); +} + +static void versal_virt_modify_dtb(const struct arm_boot_info *binfo, + void *fdt) +{ + VersalVirt *s = container_of(binfo, VersalVirt, binfo); + + fdt_add_memory_nodes(s, fdt, binfo->ram_size); +} + +static void *versal_virt_get_dtb(const struct arm_boot_info *binfo, + int *fdt_size) +{ + const VersalVirt *board = container_of(binfo, VersalVirt, binfo); + + *fdt_size = board->fdt_size; + return board->fdt; +} + +#define NUM_VIRTIO_TRANSPORT 32 +static void create_virtio_regions(VersalVirt *s) +{ + int virtio_mmio_size = 0x200; + int i; + + for (i = 0; i < NUM_VIRTIO_TRANSPORT; i++) { + char *name = g_strdup_printf("virtio%d", i);; + hwaddr base = MM_TOP_RSVD + i * virtio_mmio_size; + int irq = VERSAL_RSVD_HIGH_IRQ_FIRST + i; + MemoryRegion *mr; + DeviceState *dev; + qemu_irq pic_irq; + + pic_irq = qdev_get_gpio_in(DEVICE(&s->soc.fpd.apu.gic), irq); + dev = qdev_create(NULL, "virtio-mmio"); + object_property_add_child(OBJECT(&s->soc), name, OBJECT(dev), + &error_fatal); + qdev_init_nofail(dev); + sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic_irq); + mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); + memory_region_add_subregion(&s->soc.mr_ps, base, mr); + sysbus_create_simple("virtio-mmio", base, pic_irq); + } + + for (i = 0; i < NUM_VIRTIO_TRANSPORT; i++) { + hwaddr base = MM_TOP_RSVD + i * virtio_mmio_size; + int irq = VERSAL_RSVD_HIGH_IRQ_FIRST + i; + char *name = g_strdup_printf("/virtio_mmio@%" PRIx64, base); + + qemu_fdt_add_subnode(s->fdt, name); + qemu_fdt_setprop(s->fdt, name, "dma-coherent", NULL, 0); + qemu_fdt_setprop_cells(s->fdt, name, "interrupts", + GIC_FDT_IRQ_TYPE_SPI, irq, + GIC_FDT_IRQ_FLAGS_EDGE_LO_HI); + qemu_fdt_setprop_sized_cells(s->fdt, name, "reg", + 2, base, 2, virtio_mmio_size); + qemu_fdt_setprop_string(s->fdt, name, "compatible", "virtio,mmio"); + g_free(name); + } +} + +static void versal_virt_init(MachineState *machine) +{ + VersalVirt *s = XLNX_VERSAL_VIRT_MACHINE(machine); + int psci_conduit = QEMU_PSCI_CONDUIT_DISABLED; + + /* + * If the user provides an Operating System to be loaded, we expect them + * to use the -kernel command line option. + * + * Users can load firmware or boot-loaders with the -device loader options. + * + * When loading an OS, we generate a dtb and let arm_load_kernel() select + * where it gets loaded. This dtb will be passed to the kernel in x0. + * + * If there's no -kernel option, we generate a DTB and place it at 0x1000 + * for the bootloaders or firmware to pick up. + * + * If users want to provide their own DTB, they can use the -dtb option. + * These dtb's will have their memory nodes modified to match QEMU's + * selected ram_size option before they get passed to the kernel or fw. + * + * When loading an OS, we turn on QEMU's PSCI implementation with SMC + * as the PSCI conduit. When there's no -kernel, we assume the user + * provides EL3 firmware to handle PSCI. + */ + if (machine->kernel_filename) { + psci_conduit = QEMU_PSCI_CONDUIT_SMC; + } + + memory_region_allocate_system_memory(&s->mr_ddr, NULL, "ddr", + machine->ram_size); + + sysbus_init_child_obj(OBJECT(machine), "xlnx-ve", &s->soc, + sizeof(s->soc), TYPE_XLNX_VERSAL); + object_property_set_link(OBJECT(&s->soc), OBJECT(&s->mr_ddr), + "ddr", &error_abort); + object_property_set_int(OBJECT(&s->soc), psci_conduit, + "psci-conduit", &error_abort); + object_property_set_bool(OBJECT(&s->soc), true, "realized", &error_fatal); + + fdt_create(s); + create_virtio_regions(s); + fdt_add_gem_nodes(s); + fdt_add_uart_nodes(s); + fdt_add_gic_nodes(s); + fdt_add_timer_nodes(s); + fdt_add_cpu_nodes(s, psci_conduit); + fdt_add_clk_node(s, "/clk125", 125000000, s->phandle.clk_125Mhz); + fdt_add_clk_node(s, "/clk25", 25000000, s->phandle.clk_25Mhz); + + /* Make the APU cpu address space visible to virtio and other + * modules unaware of muliple address-spaces. */ + memory_region_add_subregion_overlap(get_system_memory(), + 0, &s->soc.fpd.apu.mr, 0); + + s->binfo.ram_size = machine->ram_size; + s->binfo.kernel_filename = machine->kernel_filename; + s->binfo.kernel_cmdline = machine->kernel_cmdline; + s->binfo.initrd_filename = machine->initrd_filename; + s->binfo.loader_start = 0x0; + s->binfo.get_dtb = versal_virt_get_dtb; + s->binfo.modify_dtb = versal_virt_modify_dtb; + if (machine->kernel_filename) { + arm_load_kernel(s->soc.fpd.apu.cpu[0], &s->binfo); + } else { + AddressSpace *as = arm_boot_address_space(s->soc.fpd.apu.cpu[0], + &s->binfo); + /* Some boot-loaders (e.g u-boot) don't like blobs at address 0 (NULL). + * Offset things by 4K. */ + s->binfo.loader_start = 0x1000; + s->binfo.dtb_limit = 0x1000000; + if (arm_load_dtb(s->binfo.loader_start, + &s->binfo, s->binfo.dtb_limit, as) < 0) { + exit(EXIT_FAILURE); + } + } +} + +static void versal_virt_machine_instance_init(Object *obj) +{ +} + +static void versal_virt_machine_class_init(ObjectClass *oc, void *data) +{ + MachineClass *mc = MACHINE_CLASS(oc); + + mc->desc = "Xilinx Versal Virtual development board"; + mc->init = versal_virt_init; + mc->max_cpus = XLNX_VERSAL_NR_ACPUS; + mc->default_cpus = XLNX_VERSAL_NR_ACPUS; + mc->no_cdrom = true; +} + +static const TypeInfo versal_virt_machine_init_typeinfo = { + .name = TYPE_XLNX_VERSAL_VIRT_MACHINE, + .parent = TYPE_MACHINE, + .class_init = versal_virt_machine_class_init, + .instance_init = versal_virt_machine_instance_init, + .instance_size = sizeof(VersalVirt), +}; + +static void versal_virt_machine_init_register_types(void) +{ + type_register_static(&versal_virt_machine_init_typeinfo); +} + +type_init(versal_virt_machine_init_register_types) + |