--- /dev/null
+/*
+ * ARM SBSA Reference Platform emulation
+ *
+ * Copyright (c) 2018 Linaro Limited
+ * Written by Hongbo Zhang <hongbo.zhang@linaro.org>
+ *
+ * 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 "qemu/error-report.h"
+#include "qemu/units.h"
+#include "sysemu/numa.h"
+#include "sysemu/sysemu.h"
+#include "exec/address-spaces.h"
+#include "exec/hwaddr.h"
+#include "kvm_arm.h"
+#include "hw/arm/boot.h"
+#include "hw/boards.h"
+#include "hw/intc/arm_gicv3_common.h"
+
+#define RAMLIMIT_GB 8192
+#define RAMLIMIT_BYTES (RAMLIMIT_GB * GiB)
+
+enum {
+ SBSA_FLASH,
+ SBSA_MEM,
+ SBSA_CPUPERIPHS,
+ SBSA_GIC_DIST,
+ SBSA_GIC_REDIST,
+ SBSA_SMMU,
+ SBSA_UART,
+ SBSA_RTC,
+ SBSA_PCIE,
+ SBSA_PCIE_MMIO,
+ SBSA_PCIE_MMIO_HIGH,
+ SBSA_PCIE_PIO,
+ SBSA_PCIE_ECAM,
+ SBSA_GPIO,
+ SBSA_SECURE_UART,
+ SBSA_SECURE_UART_MM,
+ SBSA_SECURE_MEM,
+ SBSA_AHCI,
+ SBSA_EHCI,
+};
+
+typedef struct MemMapEntry {
+ hwaddr base;
+ hwaddr size;
+} MemMapEntry;
+
+typedef struct {
+ MachineState parent;
+ struct arm_boot_info bootinfo;
+ int smp_cpus;
+ void *fdt;
+ int fdt_size;
+ int psci_conduit;
+} SBSAMachineState;
+
+#define TYPE_SBSA_MACHINE MACHINE_TYPE_NAME("sbsa-ref")
+#define SBSA_MACHINE(obj) \
+ OBJECT_CHECK(SBSAMachineState, (obj), TYPE_SBSA_MACHINE)
+
+static const MemMapEntry sbsa_ref_memmap[] = {
+ /* 512M boot ROM */
+ [SBSA_FLASH] = { 0, 0x20000000 },
+ /* 512M secure memory */
+ [SBSA_SECURE_MEM] = { 0x20000000, 0x20000000 },
+ /* Space reserved for CPU peripheral devices */
+ [SBSA_CPUPERIPHS] = { 0x40000000, 0x00040000 },
+ [SBSA_GIC_DIST] = { 0x40060000, 0x00010000 },
+ [SBSA_GIC_REDIST] = { 0x40080000, 0x04000000 },
+ [SBSA_UART] = { 0x60000000, 0x00001000 },
+ [SBSA_RTC] = { 0x60010000, 0x00001000 },
+ [SBSA_GPIO] = { 0x60020000, 0x00001000 },
+ [SBSA_SECURE_UART] = { 0x60030000, 0x00001000 },
+ [SBSA_SECURE_UART_MM] = { 0x60040000, 0x00001000 },
+ [SBSA_SMMU] = { 0x60050000, 0x00020000 },
+ /* Space here reserved for more SMMUs */
+ [SBSA_AHCI] = { 0x60100000, 0x00010000 },
+ [SBSA_EHCI] = { 0x60110000, 0x00010000 },
+ /* Space here reserved for other devices */
+ [SBSA_PCIE_PIO] = { 0x7fff0000, 0x00010000 },
+ /* 32-bit address PCIE MMIO space */
+ [SBSA_PCIE_MMIO] = { 0x80000000, 0x70000000 },
+ /* 256M PCIE ECAM space */
+ [SBSA_PCIE_ECAM] = { 0xf0000000, 0x10000000 },
+ /* ~1TB PCIE MMIO space (4GB to 1024GB boundary) */
+ [SBSA_PCIE_MMIO_HIGH] = { 0x100000000ULL, 0xFF00000000ULL },
+ [SBSA_MEM] = { 0x10000000000ULL, RAMLIMIT_BYTES },
+};
+
+static void sbsa_ref_init(MachineState *machine)
+{
+ SBSAMachineState *sms = SBSA_MACHINE(machine);
+ MachineClass *mc = MACHINE_GET_CLASS(machine);
+ MemoryRegion *sysmem = get_system_memory();
+ MemoryRegion *secure_sysmem = NULL;
+ MemoryRegion *ram = g_new(MemoryRegion, 1);
+ const CPUArchIdList *possible_cpus;
+ int n, sbsa_max_cpus;
+
+ if (strcmp(machine->cpu_type, ARM_CPU_TYPE_NAME("cortex-a57"))) {
+ error_report("sbsa-ref: CPU type other than the built-in "
+ "cortex-a57 not supported");
+ exit(1);
+ }
+
+ if (kvm_enabled()) {
+ error_report("sbsa-ref: KVM is not supported for this machine");
+ exit(1);
+ }
+
+ /*
+ * This machine has EL3 enabled, external firmware should supply PSCI
+ * implementation, so the QEMU's internal PSCI is disabled.
+ */
+ sms->psci_conduit = QEMU_PSCI_CONDUIT_DISABLED;
+
+ sbsa_max_cpus = sbsa_ref_memmap[SBSA_GIC_REDIST].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);
+ }
+
+ sms->smp_cpus = smp_cpus;
+
+ if (machine->ram_size > sbsa_ref_memmap[SBSA_MEM].size) {
+ error_report("sbsa-ref: cannot model more than %dGB RAM", RAMLIMIT_GB);
+ exit(1);
+ }
+
+ 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);
+
+ if (object_property_find(cpuobj, "reset-cbar", NULL)) {
+ object_property_set_int(cpuobj,
+ sbsa_ref_memmap[SBSA_CPUPERIPHS].base,
+ "reset-cbar", &error_abort);
+ }
+
+ object_property_set_link(cpuobj, OBJECT(sysmem), "memory",
+ &error_abort);
+
+ object_property_set_link(cpuobj, OBJECT(secure_sysmem),
+ "secure-memory", &error_abort);
+
+ object_property_set_bool(cpuobj, true, "realized", &error_fatal);
+ object_unref(cpuobj);
+ }
+
+ memory_region_allocate_system_memory(ram, NULL, "sbsa-ref.ram",
+ machine->ram_size);
+ memory_region_add_subregion(sysmem, sbsa_ref_memmap[SBSA_MEM].base, ram);
+
+ sms->bootinfo.ram_size = machine->ram_size;
+ sms->bootinfo.kernel_filename = machine->kernel_filename;
+ sms->bootinfo.nb_cpus = smp_cpus;
+ sms->bootinfo.board_id = -1;
+ sms->bootinfo.loader_start = sbsa_ref_memmap[SBSA_MEM].base;
+ arm_load_kernel(ARM_CPU(first_cpu), &sms->bootinfo);
+}
+
+static uint64_t sbsa_ref_cpu_mp_affinity(SBSAMachineState *sms, int idx)
+{
+ uint8_t clustersz = ARM_DEFAULT_CPUS_PER_CLUSTER;
+ return arm_cpu_mp_affinity(idx, clustersz);
+}
+
+static const CPUArchIdList *sbsa_ref_possible_cpu_arch_ids(MachineState *ms)
+{
+ SBSAMachineState *sms = SBSA_MACHINE(ms);
+ int n;
+
+ 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(sms, 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 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 void sbsa_ref_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+
+ mc->init = sbsa_ref_init;
+ mc->desc = "QEMU 'SBSA Reference' ARM Virtual Machine";
+ mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a57");
+ mc->max_cpus = 512;
+ mc->pci_allow_0_address = true;
+ mc->minimum_page_bits = 12;
+ mc->block_default_type = IF_IDE;
+ mc->no_cdrom = 1;
+ mc->default_ram_size = 1 * GiB;
+ mc->default_cpus = 4;
+ mc->possible_cpu_arch_ids = sbsa_ref_possible_cpu_arch_ids;
+ mc->cpu_index_to_instance_props = sbsa_ref_cpu_index_to_props;
+ mc->get_default_cpu_node_id = sbsa_ref_get_default_cpu_node_id;
+}
+
+static const TypeInfo sbsa_ref_info = {
+ .name = TYPE_SBSA_MACHINE,
+ .parent = TYPE_MACHINE,
+ .class_init = sbsa_ref_class_init,
+ .instance_size = sizeof(SBSAMachineState),
+};
+
+static void sbsa_ref_machine_init(void)
+{
+ type_register_static(&sbsa_ref_info);
+}
+
+type_init(sbsa_ref_machine_init);
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