| /* |
| * 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-common.h" |
| #include "net/net.h" |
| #include "hw/hw.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 "exec/address-spaces.h" |
| #include "hw/char/serial.h" |
| #include "hw/ppc/ppc.h" |
| #include "ppc405.h" |
| #include "sysemu/sysemu.h" |
| #include "hw/sysbus.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 |
| |
| #define PPC440EP_SDRAM_NR_BANKS 4 |
| |
| static const unsigned int ppc440ep_sdram_bank_sizes[] = { |
| 256<<20, 128<<20, 64<<20, 32<<20, 16<<20, 8<<20, 0 |
| }; |
| |
| static hwaddr entry; |
| |
| static int bamboo_load_device_tree(hwaddr addr, |
| uint32_t ramsize, |
| hwaddr initrd_base, |
| hwaddr initrd_size, |
| const char *kernel_cmdline) |
| { |
| int ret = -1; |
| uint32_t mem_reg_property[] = { 0, 0, cpu_to_be32(ramsize) }; |
| 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) { |
| goto out; |
| } |
| fdt = load_device_tree(filename, &fdt_size); |
| g_free(filename); |
| if (fdt == NULL) { |
| goto out; |
| } |
| |
| /* 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", |
| 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); |
| g_free(fdt); |
| return 0; |
| |
| out: |
| |
| return ret; |
| } |
| |
| /* 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<<20) - 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) |
| { |
| ram_addr_t ram_size = machine->ram_size; |
| const char *kernel_filename = machine->kernel_filename; |
| const char *kernel_cmdline = machine->kernel_cmdline; |
| 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); |
| MemoryRegion *ram_memories |
| = g_malloc(PPC440EP_SDRAM_NR_BANKS * sizeof(*ram_memories)); |
| hwaddr ram_bases[PPC440EP_SDRAM_NR_BANKS]; |
| hwaddr ram_sizes[PPC440EP_SDRAM_NR_BANKS]; |
| qemu_irq *pic; |
| qemu_irq *irqs; |
| PCIBus *pcibus; |
| PowerPCCPU *cpu; |
| CPUPPCState *env; |
| uint64_t elf_entry; |
| uint64_t elf_lowaddr; |
| hwaddr loadaddr = 0; |
| target_long initrd_size = 0; |
| DeviceState *dev; |
| int success; |
| int i; |
| |
| /* Setup CPU. */ |
| if (machine->cpu_model == NULL) { |
| machine->cpu_model = "440EP"; |
| } |
| cpu = cpu_ppc_init(machine->cpu_model); |
| if (cpu == NULL) { |
| fprintf(stderr, "Unable to initialize CPU!\n"); |
| exit(1); |
| } |
| env = &cpu->env; |
| |
| qemu_register_reset(main_cpu_reset, cpu); |
| ppc_booke_timers_init(cpu, 400000000, 0); |
| ppc_dcr_init(env, NULL, NULL); |
| |
| /* interrupt controller */ |
| irqs = g_malloc0(sizeof(qemu_irq) * PPCUIC_OUTPUT_NB); |
| irqs[PPCUIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT]; |
| irqs[PPCUIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT]; |
| pic = ppcuic_init(env, irqs, 0x0C0, 0, 1); |
| |
| /* SDRAM controller */ |
| memset(ram_bases, 0, sizeof(ram_bases)); |
| memset(ram_sizes, 0, sizeof(ram_sizes)); |
| ram_size = ppc4xx_sdram_adjust(ram_size, PPC440EP_SDRAM_NR_BANKS, |
| ram_memories, |
| ram_bases, ram_sizes, |
| ppc440ep_sdram_bank_sizes); |
| /* XXX 440EP's ECC interrupts are on UIC1, but we've only created UIC0. */ |
| ppc4xx_sdram_init(env, pic[14], PPC440EP_SDRAM_NR_BANKS, ram_memories, |
| ram_bases, ram_sizes, 1); |
| |
| /* PCI */ |
| dev = sysbus_create_varargs(TYPE_PPC4xx_PCI_HOST_BRIDGE, |
| PPC440EP_PCI_CONFIG, |
| pic[pci_irq_nrs[0]], pic[pci_irq_nrs[1]], |
| pic[pci_irq_nrs[2]], pic[pci_irq_nrs[3]], |
| NULL); |
| pcibus = (PCIBus *)qdev_get_child_bus(dev, "pci.0"); |
| if (!pcibus) { |
| fprintf(stderr, "couldn't create PCI controller!\n"); |
| 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_hds[0] != NULL) { |
| serial_mm_init(address_space_mem, 0xef600300, 0, pic[0], |
| PPC_SERIAL_MM_BAUDBASE, serial_hds[0], |
| DEVICE_BIG_ENDIAN); |
| } |
| if (serial_hds[1] != NULL) { |
| serial_mm_init(address_space_mem, 0xef600400, 0, pic[1], |
| PPC_SERIAL_MM_BAUDBASE, serial_hds[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) { |
| success = load_uimage(kernel_filename, &entry, &loadaddr, NULL, |
| NULL, NULL); |
| if (success < 0) { |
| success = load_elf(kernel_filename, NULL, NULL, &elf_entry, |
| &elf_lowaddr, NULL, 1, PPC_ELF_MACHINE, |
| 0, 0); |
| entry = elf_entry; |
| loadaddr = elf_lowaddr; |
| } |
| /* XXX try again as binary */ |
| if (success < 0) { |
| fprintf(stderr, "qemu: could not load kernel '%s'\n", |
| kernel_filename); |
| exit(1); |
| } |
| } |
| |
| /* Load initrd. */ |
| if (initrd_filename) { |
| initrd_size = load_image_targphys(initrd_filename, RAMDISK_ADDR, |
| ram_size - RAMDISK_ADDR); |
| |
| if (initrd_size < 0) { |
| fprintf(stderr, "qemu: could not load ram disk '%s' at %x\n", |
| 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(FDT_ADDR, ram_size, RAMDISK_ADDR, |
| initrd_size, kernel_cmdline) < 0) { |
| fprintf(stderr, "couldn't load device tree\n"); |
| exit(1); |
| } |
| } |
| } |
| |
| static void bamboo_machine_init(MachineClass *mc) |
| { |
| mc->desc = "bamboo"; |
| mc->init = bamboo_init; |
| } |
| |
| DEFINE_MACHINE("bamboo", bamboo_machine_init) |
