| /* |
| * QEMU PowerPC 440 Bamboo board emulation |
| * |
| * Copyright 2007 IBM Corporation. |
| * Authors: |
| * Jerone Young <jyoung5@us.ibm.com> |
| * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> |
| * Hollis Blanchard <hollisb@us.ibm.com> |
| * |
| * This work is licensed under the GNU GPL license version 2 or later. |
| * |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/units.h" |
| #include "qemu/error-report.h" |
| #include "qemu/datadir.h" |
| #include "qemu/error-report.h" |
| #include "net/net.h" |
| #include "hw/pci/pci.h" |
| #include "hw/boards.h" |
| #include "sysemu/kvm.h" |
| #include "kvm_ppc.h" |
| #include "sysemu/device_tree.h" |
| #include "hw/loader.h" |
| #include "elf.h" |
| #include "hw/char/serial.h" |
| #include "hw/ppc/ppc.h" |
| #include "ppc405.h" |
| #include "sysemu/sysemu.h" |
| #include "sysemu/reset.h" |
| #include "hw/sysbus.h" |
| #include "hw/intc/ppc-uic.h" |
| #include "hw/qdev-properties.h" |
| #include "qapi/error.h" |
| |
| #include <libfdt.h> |
| |
| #define BINARY_DEVICE_TREE_FILE "bamboo.dtb" |
| |
| /* from u-boot */ |
| #define KERNEL_ADDR 0x1000000 |
| #define FDT_ADDR 0x1800000 |
| #define RAMDISK_ADDR 0x1900000 |
| |
| #define PPC440EP_PCI_CONFIG 0xeec00000 |
| #define PPC440EP_PCI_INTACK 0xeed00000 |
| #define PPC440EP_PCI_SPECIAL 0xeed00000 |
| #define PPC440EP_PCI_REGS 0xef400000 |
| #define PPC440EP_PCI_IO 0xe8000000 |
| #define PPC440EP_PCI_IOLEN 0x00010000 |
| |
| static hwaddr entry; |
| |
| static int bamboo_load_device_tree(MachineState *machine, |
| hwaddr addr, |
| hwaddr initrd_base, |
| hwaddr initrd_size) |
| { |
| int ret = -1; |
| uint32_t mem_reg_property[] = { 0, 0, cpu_to_be32(machine->ram_size) }; |
| char *filename; |
| int fdt_size; |
| void *fdt; |
| uint32_t tb_freq = 400000000; |
| uint32_t clock_freq = 400000000; |
| |
| filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE); |
| if (!filename) { |
| return -1; |
| } |
| fdt = load_device_tree(filename, &fdt_size); |
| g_free(filename); |
| if (fdt == NULL) { |
| return -1; |
| } |
| |
| /* Manipulate device tree in memory. */ |
| |
| ret = qemu_fdt_setprop(fdt, "/memory", "reg", mem_reg_property, |
| sizeof(mem_reg_property)); |
| if (ret < 0) { |
| fprintf(stderr, "couldn't set /memory/reg\n"); |
| } |
| ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start", |
| initrd_base); |
| if (ret < 0) { |
| fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n"); |
| } |
| ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end", |
| (initrd_base + initrd_size)); |
| if (ret < 0) { |
| fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n"); |
| } |
| ret = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", |
| machine->kernel_cmdline); |
| if (ret < 0) { |
| fprintf(stderr, "couldn't set /chosen/bootargs\n"); |
| } |
| |
| /* |
| * Copy data from the host device tree into the guest. Since the guest can |
| * directly access the timebase without host involvement, we must expose |
| * the correct frequencies. |
| */ |
| if (kvm_enabled()) { |
| tb_freq = kvmppc_get_tbfreq(); |
| clock_freq = kvmppc_get_clockfreq(); |
| } |
| |
| qemu_fdt_setprop_cell(fdt, "/cpus/cpu@0", "clock-frequency", |
| clock_freq); |
| qemu_fdt_setprop_cell(fdt, "/cpus/cpu@0", "timebase-frequency", |
| tb_freq); |
| |
| rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr); |
| |
| /* Set ms->fdt for 'dumpdtb' QMP/HMP command */ |
| machine->fdt = fdt; |
| |
| return 0; |
| } |
| |
| /* Create reset TLB entries for BookE, spanning the 32bit addr space. */ |
| static void mmubooke_create_initial_mapping(CPUPPCState *env, |
| target_ulong va, |
| hwaddr pa) |
| { |
| ppcemb_tlb_t *tlb = &env->tlb.tlbe[0]; |
| |
| tlb->attr = 0; |
| tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); |
| tlb->size = 1U << 31; /* up to 0x80000000 */ |
| tlb->EPN = va & TARGET_PAGE_MASK; |
| tlb->RPN = pa & TARGET_PAGE_MASK; |
| tlb->PID = 0; |
| |
| tlb = &env->tlb.tlbe[1]; |
| tlb->attr = 0; |
| tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); |
| tlb->size = 1U << 31; /* up to 0xffffffff */ |
| tlb->EPN = 0x80000000 & TARGET_PAGE_MASK; |
| tlb->RPN = 0x80000000 & TARGET_PAGE_MASK; |
| tlb->PID = 0; |
| } |
| |
| static void main_cpu_reset(void *opaque) |
| { |
| PowerPCCPU *cpu = opaque; |
| CPUPPCState *env = &cpu->env; |
| |
| cpu_reset(CPU(cpu)); |
| env->gpr[1] = (16 * MiB) - 8; |
| env->gpr[3] = FDT_ADDR; |
| env->nip = entry; |
| |
| /* Create a mapping for the kernel. */ |
| mmubooke_create_initial_mapping(env, 0, 0); |
| } |
| |
| static void bamboo_init(MachineState *machine) |
| { |
| const char *kernel_filename = machine->kernel_filename; |
| const char *initrd_filename = machine->initrd_filename; |
| unsigned int pci_irq_nrs[4] = { 28, 27, 26, 25 }; |
| MemoryRegion *address_space_mem = get_system_memory(); |
| MemoryRegion *isa = g_new(MemoryRegion, 1); |
| PCIBus *pcibus; |
| PowerPCCPU *cpu; |
| CPUPPCState *env; |
| target_long initrd_size = 0; |
| DeviceState *dev; |
| DeviceState *uicdev; |
| SysBusDevice *uicsbd; |
| int success; |
| int i; |
| |
| cpu = POWERPC_CPU(cpu_create(machine->cpu_type)); |
| env = &cpu->env; |
| |
| if (env->mmu_model != POWERPC_MMU_BOOKE) { |
| error_report("MMU model %i not supported by this machine", |
| env->mmu_model); |
| exit(1); |
| } |
| |
| qemu_register_reset(main_cpu_reset, cpu); |
| ppc_booke_timers_init(cpu, 400000000, 0); |
| ppc_dcr_init(env, NULL, NULL); |
| |
| /* interrupt controller */ |
| uicdev = qdev_new(TYPE_PPC_UIC); |
| ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(uicdev), cpu, &error_fatal); |
| object_unref(OBJECT(uicdev)); |
| uicsbd = SYS_BUS_DEVICE(uicdev); |
| sysbus_connect_irq(uicsbd, PPCUIC_OUTPUT_INT, |
| qdev_get_gpio_in(DEVICE(cpu), PPC40x_INPUT_INT)); |
| sysbus_connect_irq(uicsbd, PPCUIC_OUTPUT_CINT, |
| qdev_get_gpio_in(DEVICE(cpu), PPC40x_INPUT_CINT)); |
| |
| /* SDRAM controller */ |
| dev = qdev_new(TYPE_PPC4xx_SDRAM_DDR); |
| object_property_set_link(OBJECT(dev), "dram", OBJECT(machine->ram), |
| &error_abort); |
| ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(dev), cpu, &error_fatal); |
| object_unref(OBJECT(dev)); |
| /* XXX 440EP's ECC interrupts are on UIC1, but we've only created UIC0. */ |
| sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, qdev_get_gpio_in(uicdev, 14)); |
| /* Enable SDRAM memory regions, this should be done by the firmware */ |
| ppc4xx_sdram_ddr_enable(PPC4xx_SDRAM_DDR(dev)); |
| |
| /* PCI */ |
| dev = sysbus_create_varargs(TYPE_PPC4xx_PCI_HOST_BRIDGE, |
| PPC440EP_PCI_CONFIG, |
| qdev_get_gpio_in(uicdev, pci_irq_nrs[0]), |
| qdev_get_gpio_in(uicdev, pci_irq_nrs[1]), |
| qdev_get_gpio_in(uicdev, pci_irq_nrs[2]), |
| qdev_get_gpio_in(uicdev, pci_irq_nrs[3]), |
| NULL); |
| pcibus = (PCIBus *)qdev_get_child_bus(dev, "pci.0"); |
| if (!pcibus) { |
| error_report("couldn't create PCI controller"); |
| exit(1); |
| } |
| |
| memory_region_init_alias(isa, NULL, "isa_mmio", |
| get_system_io(), 0, PPC440EP_PCI_IOLEN); |
| memory_region_add_subregion(get_system_memory(), PPC440EP_PCI_IO, isa); |
| |
| if (serial_hd(0) != NULL) { |
| serial_mm_init(address_space_mem, 0xef600300, 0, |
| qdev_get_gpio_in(uicdev, 0), |
| PPC_SERIAL_MM_BAUDBASE, serial_hd(0), |
| DEVICE_BIG_ENDIAN); |
| } |
| if (serial_hd(1) != NULL) { |
| serial_mm_init(address_space_mem, 0xef600400, 0, |
| qdev_get_gpio_in(uicdev, 1), |
| PPC_SERIAL_MM_BAUDBASE, serial_hd(1), |
| DEVICE_BIG_ENDIAN); |
| } |
| |
| if (pcibus) { |
| /* Register network interfaces. */ |
| for (i = 0; i < nb_nics; i++) { |
| /* |
| * There are no PCI NICs on the Bamboo board, but there are |
| * PCI slots, so we can pick whatever default model we want. |
| */ |
| pci_nic_init_nofail(&nd_table[i], pcibus, "e1000", NULL); |
| } |
| } |
| |
| /* Load kernel. */ |
| if (kernel_filename) { |
| hwaddr loadaddr = LOAD_UIMAGE_LOADADDR_INVALID; |
| success = load_uimage(kernel_filename, &entry, &loadaddr, NULL, |
| NULL, NULL); |
| if (success < 0) { |
| uint64_t elf_entry; |
| success = load_elf(kernel_filename, NULL, NULL, NULL, &elf_entry, |
| NULL, NULL, NULL, 1, PPC_ELF_MACHINE, 0, 0); |
| entry = elf_entry; |
| } |
| /* XXX try again as binary */ |
| if (success < 0) { |
| error_report("could not load kernel '%s'", kernel_filename); |
| exit(1); |
| } |
| } |
| |
| /* Load initrd. */ |
| if (initrd_filename) { |
| initrd_size = load_image_targphys(initrd_filename, RAMDISK_ADDR, |
| machine->ram_size - RAMDISK_ADDR); |
| |
| if (initrd_size < 0) { |
| error_report("could not load ram disk '%s' at %x", |
| initrd_filename, RAMDISK_ADDR); |
| exit(1); |
| } |
| } |
| |
| /* If we're loading a kernel directly, we must load the device tree too. */ |
| if (kernel_filename) { |
| if (bamboo_load_device_tree(machine, FDT_ADDR, |
| RAMDISK_ADDR, initrd_size) < 0) { |
| error_report("couldn't load device tree"); |
| exit(1); |
| } |
| } |
| } |
| |
| static void bamboo_machine_init(MachineClass *mc) |
| { |
| mc->desc = "bamboo"; |
| mc->init = bamboo_init; |
| mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("440epb"); |
| mc->default_ram_id = "ppc4xx.sdram"; |
| } |
| |
| DEFINE_MACHINE("bamboo", bamboo_machine_init) |
