/* * QEMU PowerPC MPC8544DS board emulation * * Copyright (C) 2009 Freescale Semiconductor, Inc. All rights reserved. * * Author: Yu Liu, * * This file is derived from hw/ppc440_bamboo.c, * the copyright for that material belongs to the original owners. * * This is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include "config.h" #include "qemu-common.h" #include "net.h" #include "hw.h" #include "pc.h" #include "pci.h" #include "boards.h" #include "sysemu.h" #include "kvm.h" #include "kvm_ppc.h" #include "device_tree.h" #include "openpic.h" #include "ppc.h" #include "loader.h" #include "elf.h" #include "sysbus.h" #include "exec-memory.h" #include "host-utils.h" #define BINARY_DEVICE_TREE_FILE "mpc8544ds.dtb" #define UIMAGE_LOAD_BASE 0 #define DTC_LOAD_PAD 0x500000 #define DTC_PAD_MASK 0xFFFFF #define INITRD_LOAD_PAD 0x2000000 #define INITRD_PAD_MASK 0xFFFFFF #define RAM_SIZES_ALIGN (64UL << 20) #define MPC8544_CCSRBAR_BASE 0xE0000000ULL #define MPC8544_CCSRBAR_SIZE 0x00100000ULL #define MPC8544_MPIC_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x40000ULL) #define MPC8544_SERIAL0_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x4500ULL) #define MPC8544_SERIAL1_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x4600ULL) #define MPC8544_PCI_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x8000ULL) #define MPC8544_PCI_REGS_SIZE 0x1000ULL #define MPC8544_PCI_IO 0xE1000000ULL #define MPC8544_PCI_IOLEN 0x10000ULL #define MPC8544_UTIL_BASE (MPC8544_CCSRBAR_BASE + 0xe0000ULL) #define MPC8544_SPIN_BASE 0xEF000000ULL struct boot_info { uint32_t dt_base; uint32_t dt_size; uint32_t entry; }; static void pci_map_create(void *fdt, uint32_t *pci_map, uint32_t mpic) { int i; const uint32_t tmp[] = { /* IDSEL 0x11 J17 Slot 1 */ 0x8800, 0x0, 0x0, 0x1, mpic, 0x2, 0x1, 0x0, 0x0, 0x8800, 0x0, 0x0, 0x2, mpic, 0x3, 0x1, 0x0, 0x0, 0x8800, 0x0, 0x0, 0x3, mpic, 0x4, 0x1, 0x0, 0x0, 0x8800, 0x0, 0x0, 0x4, mpic, 0x1, 0x1, 0x0, 0x0, /* IDSEL 0x12 J16 Slot 2 */ 0x9000, 0x0, 0x0, 0x1, mpic, 0x3, 0x1, 0x0, 0x0, 0x9000, 0x0, 0x0, 0x2, mpic, 0x4, 0x1, 0x0, 0x0, 0x9000, 0x0, 0x0, 0x3, mpic, 0x2, 0x1, 0x0, 0x0, 0x9000, 0x0, 0x0, 0x4, mpic, 0x1, 0x1, 0x0, 0x0, }; for (i = 0; i < ARRAY_SIZE(tmp); i++) { pci_map[i] = cpu_to_be32(tmp[i]); } } static void dt_serial_create(void *fdt, unsigned long long offset, const char *soc, const char *mpic, const char *alias, int idx, bool defcon) { char ser[128]; snprintf(ser, sizeof(ser), "%s/serial@%llx", soc, offset); qemu_devtree_add_subnode(fdt, ser); qemu_devtree_setprop_string(fdt, ser, "device_type", "serial"); qemu_devtree_setprop_string(fdt, ser, "compatible", "ns16550"); qemu_devtree_setprop_cells(fdt, ser, "reg", offset, 0x100); qemu_devtree_setprop_cell(fdt, ser, "cell-index", idx); qemu_devtree_setprop_cell(fdt, ser, "clock-frequency", 0); qemu_devtree_setprop_cells(fdt, ser, "interrupts", 42, 2, 0, 0); qemu_devtree_setprop_phandle(fdt, ser, "interrupt-parent", mpic); qemu_devtree_setprop_string(fdt, "/aliases", alias, ser); if (defcon) { qemu_devtree_setprop_string(fdt, "/chosen", "linux,stdout-path", ser); } } static int mpc8544_load_device_tree(CPUPPCState *env, target_phys_addr_t addr, target_phys_addr_t ramsize, target_phys_addr_t initrd_base, target_phys_addr_t initrd_size, const char *kernel_cmdline) { int ret = -1; uint64_t mem_reg_property[] = { 0, cpu_to_be64(ramsize) }; int fdt_size; void *fdt; uint8_t hypercall[16]; uint32_t clock_freq = 400000000; uint32_t tb_freq = 400000000; int i; const char *compatible = "MPC8544DS\0MPC85xxDS"; int compatible_len = sizeof("MPC8544DS\0MPC85xxDS"); char compatible_sb[] = "fsl,mpc8544-immr\0simple-bus"; char model[] = "MPC8544DS"; char soc[128]; char mpic[128]; uint32_t mpic_ph; char gutil[128]; char pci[128]; uint32_t pci_map[9 * 8]; uint32_t pci_ranges[14] = { 0x2000000, 0x0, 0xc0000000, 0x0, 0xc0000000, 0x0, 0x20000000, 0x1000000, 0x0, 0x0, 0x0, 0xe1000000, 0x0, 0x10000, }; QemuOpts *machine_opts; const char *dumpdtb = NULL; const char *dtb_file = NULL; machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0); if (machine_opts) { const char *tmp; dumpdtb = qemu_opt_get(machine_opts, "dumpdtb"); dtb_file = qemu_opt_get(machine_opts, "dtb"); tmp = qemu_opt_get(machine_opts, "dt_compatible"); if (tmp) { compatible = tmp; compatible_len = strlen(compatible) + 1; } } if (dtb_file) { char *filename; filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, dtb_file); if (!filename) { goto out; } fdt = load_device_tree(filename, &fdt_size); if (!fdt) { goto out; } goto done; } fdt = create_device_tree(&fdt_size); if (fdt == NULL) { goto out; } /* Manipulate device tree in memory. */ qemu_devtree_setprop_string(fdt, "/", "model", model); qemu_devtree_setprop(fdt, "/", "compatible", compatible, compatible_len); qemu_devtree_setprop_cell(fdt, "/", "#address-cells", 2); qemu_devtree_setprop_cell(fdt, "/", "#size-cells", 2); qemu_devtree_add_subnode(fdt, "/memory"); qemu_devtree_setprop_string(fdt, "/memory", "device_type", "memory"); qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property, sizeof(mem_reg_property)); qemu_devtree_add_subnode(fdt, "/chosen"); if (initrd_size) { ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start", initrd_base); if (ret < 0) { fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n"); } ret = qemu_devtree_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_devtree_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline); if (ret < 0) fprintf(stderr, "couldn't set /chosen/bootargs\n"); if (kvm_enabled()) { /* Read out host's frequencies */ clock_freq = kvmppc_get_clockfreq(); tb_freq = kvmppc_get_tbfreq(); /* indicate KVM hypercall interface */ qemu_devtree_add_subnode(fdt, "/hypervisor"); qemu_devtree_setprop_string(fdt, "/hypervisor", "compatible", "linux,kvm"); kvmppc_get_hypercall(env, hypercall, sizeof(hypercall)); qemu_devtree_setprop(fdt, "/hypervisor", "hcall-instructions", hypercall, sizeof(hypercall)); } /* Create CPU nodes */ qemu_devtree_add_subnode(fdt, "/cpus"); qemu_devtree_setprop_cell(fdt, "/cpus", "#address-cells", 1); qemu_devtree_setprop_cell(fdt, "/cpus", "#size-cells", 0); /* We need to generate the cpu nodes in reverse order, so Linux can pick the first node as boot node and be happy */ for (i = smp_cpus - 1; i >= 0; i--) { char cpu_name[128]; uint64_t cpu_release_addr = MPC8544_SPIN_BASE + (i * 0x20); for (env = first_cpu; env != NULL; env = env->next_cpu) { if (env->cpu_index == i) { break; } } if (!env) { continue; } snprintf(cpu_name, sizeof(cpu_name), "/cpus/PowerPC,8544@%x", env->cpu_index); qemu_devtree_add_subnode(fdt, cpu_name); qemu_devtree_setprop_cell(fdt, cpu_name, "clock-frequency", clock_freq); qemu_devtree_setprop_cell(fdt, cpu_name, "timebase-frequency", tb_freq); qemu_devtree_setprop_string(fdt, cpu_name, "device_type", "cpu"); qemu_devtree_setprop_cell(fdt, cpu_name, "reg", env->cpu_index); qemu_devtree_setprop_cell(fdt, cpu_name, "d-cache-line-size", env->dcache_line_size); qemu_devtree_setprop_cell(fdt, cpu_name, "i-cache-line-size", env->icache_line_size); qemu_devtree_setprop_cell(fdt, cpu_name, "d-cache-size", 0x8000); qemu_devtree_setprop_cell(fdt, cpu_name, "i-cache-size", 0x8000); qemu_devtree_setprop_cell(fdt, cpu_name, "bus-frequency", 0); if (env->cpu_index) { qemu_devtree_setprop_string(fdt, cpu_name, "status", "disabled"); qemu_devtree_setprop_string(fdt, cpu_name, "enable-method", "spin-table"); qemu_devtree_setprop_u64(fdt, cpu_name, "cpu-release-addr", cpu_release_addr); } else { qemu_devtree_setprop_string(fdt, cpu_name, "status", "okay"); } } qemu_devtree_add_subnode(fdt, "/aliases"); /* XXX These should go into their respective devices' code */ snprintf(soc, sizeof(soc), "/soc@%llx", MPC8544_CCSRBAR_BASE); qemu_devtree_add_subnode(fdt, soc); qemu_devtree_setprop_string(fdt, soc, "device_type", "soc"); qemu_devtree_setprop(fdt, soc, "compatible", compatible_sb, sizeof(compatible_sb)); qemu_devtree_setprop_cell(fdt, soc, "#address-cells", 1); qemu_devtree_setprop_cell(fdt, soc, "#size-cells", 1); qemu_devtree_setprop_cells(fdt, soc, "ranges", 0x0, MPC8544_CCSRBAR_BASE >> 32, MPC8544_CCSRBAR_BASE, MPC8544_CCSRBAR_SIZE); /* XXX should contain a reasonable value */ qemu_devtree_setprop_cell(fdt, soc, "bus-frequency", 0); snprintf(mpic, sizeof(mpic), "%s/pic@%llx", soc, MPC8544_MPIC_REGS_BASE - MPC8544_CCSRBAR_BASE); qemu_devtree_add_subnode(fdt, mpic); qemu_devtree_setprop_string(fdt, mpic, "device_type", "open-pic"); qemu_devtree_setprop_string(fdt, mpic, "compatible", "fsl,mpic"); qemu_devtree_setprop_cells(fdt, mpic, "reg", MPC8544_MPIC_REGS_BASE - MPC8544_CCSRBAR_BASE, 0x40000); qemu_devtree_setprop_cell(fdt, mpic, "#address-cells", 0); qemu_devtree_setprop_cell(fdt, mpic, "#interrupt-cells", 4); mpic_ph = qemu_devtree_alloc_phandle(fdt); qemu_devtree_setprop_cell(fdt, mpic, "phandle", mpic_ph); qemu_devtree_setprop_cell(fdt, mpic, "linux,phandle", mpic_ph); qemu_devtree_setprop(fdt, mpic, "interrupt-controller", NULL, 0); qemu_devtree_setprop(fdt, mpic, "big-endian", NULL, 0); qemu_devtree_setprop(fdt, mpic, "single-cpu-affinity", NULL, 0); qemu_devtree_setprop_cell(fdt, mpic, "last-interrupt-source", 255); /* * We have to generate ser1 first, because Linux takes the first * device it finds in the dt as serial output device. And we generate * devices in reverse order to the dt. */ dt_serial_create(fdt, MPC8544_SERIAL1_REGS_BASE - MPC8544_CCSRBAR_BASE, soc, mpic, "serial1", 1, false); dt_serial_create(fdt, MPC8544_SERIAL0_REGS_BASE - MPC8544_CCSRBAR_BASE, soc, mpic, "serial0", 0, true); snprintf(gutil, sizeof(gutil), "%s/global-utilities@%llx", soc, MPC8544_UTIL_BASE - MPC8544_CCSRBAR_BASE); qemu_devtree_add_subnode(fdt, gutil); qemu_devtree_setprop_string(fdt, gutil, "compatible", "fsl,mpc8544-guts"); qemu_devtree_setprop_cells(fdt, gutil, "reg", MPC8544_UTIL_BASE - MPC8544_CCSRBAR_BASE, 0x1000); qemu_devtree_setprop(fdt, gutil, "fsl,has-rstcr", NULL, 0); snprintf(pci, sizeof(pci), "/pci@%llx", MPC8544_PCI_REGS_BASE); qemu_devtree_add_subnode(fdt, pci); qemu_devtree_setprop_cell(fdt, pci, "cell-index", 0); qemu_devtree_setprop_string(fdt, pci, "compatible", "fsl,mpc8540-pci"); qemu_devtree_setprop_string(fdt, pci, "device_type", "pci"); qemu_devtree_setprop_cells(fdt, pci, "interrupt-map-mask", 0xf800, 0x0, 0x0, 0x7); pci_map_create(fdt, pci_map, qemu_devtree_get_phandle(fdt, mpic)); qemu_devtree_setprop(fdt, pci, "interrupt-map", pci_map, sizeof(pci_map)); qemu_devtree_setprop_phandle(fdt, pci, "interrupt-parent", mpic); qemu_devtree_setprop_cells(fdt, pci, "interrupts", 24, 2, 0, 0); qemu_devtree_setprop_cells(fdt, pci, "bus-range", 0, 255); for (i = 0; i < 14; i++) { pci_ranges[i] = cpu_to_be32(pci_ranges[i]); } qemu_devtree_setprop(fdt, pci, "ranges", pci_ranges, sizeof(pci_ranges)); qemu_devtree_setprop_cells(fdt, pci, "reg", MPC8544_PCI_REGS_BASE >> 32, MPC8544_PCI_REGS_BASE, 0, 0x1000); qemu_devtree_setprop_cell(fdt, pci, "clock-frequency", 66666666); qemu_devtree_setprop_cell(fdt, pci, "#interrupt-cells", 1); qemu_devtree_setprop_cell(fdt, pci, "#size-cells", 2); qemu_devtree_setprop_cell(fdt, pci, "#address-cells", 3); qemu_devtree_setprop_string(fdt, "/aliases", "pci0", pci); done: if (dumpdtb) { /* Dump the dtb to a file and quit */ FILE *f = fopen(dumpdtb, "wb"); size_t len; len = fwrite(fdt, fdt_size, 1, f); fclose(f); if (len != fdt_size) { exit(1); } exit(0); } ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr); if (ret < 0) { goto out; } g_free(fdt); ret = fdt_size; out: return ret; } /* Create -kernel TLB entries for BookE. */ static inline target_phys_addr_t booke206_page_size_to_tlb(uint64_t size) { return 63 - clz64(size >> 10); } static void mmubooke_create_initial_mapping(CPUPPCState *env) { struct boot_info *bi = env->load_info; ppcmas_tlb_t *tlb = booke206_get_tlbm(env, 1, 0, 0); target_phys_addr_t size, dt_end; int ps; /* Our initial TLB entry needs to cover everything from 0 to the device tree top */ dt_end = bi->dt_base + bi->dt_size; ps = booke206_page_size_to_tlb(dt_end) + 1; size = (ps << MAS1_TSIZE_SHIFT); tlb->mas1 = MAS1_VALID | size; tlb->mas2 = 0; tlb->mas7_3 = 0; tlb->mas7_3 |= MAS3_UR | MAS3_UW | MAS3_UX | MAS3_SR | MAS3_SW | MAS3_SX; env->tlb_dirty = true; } static void mpc8544ds_cpu_reset_sec(void *opaque) { PowerPCCPU *cpu = opaque; CPUPPCState *env = &cpu->env; cpu_reset(CPU(cpu)); /* Secondary CPU starts in halted state for now. Needs to change when implementing non-kernel boot. */ env->halted = 1; env->exception_index = EXCP_HLT; } static void mpc8544ds_cpu_reset(void *opaque) { PowerPCCPU *cpu = opaque; CPUPPCState *env = &cpu->env; struct boot_info *bi = env->load_info; cpu_reset(CPU(cpu)); /* Set initial guest state. */ env->halted = 0; env->gpr[1] = (16<<20) - 8; env->gpr[3] = bi->dt_base; env->nip = bi->entry; mmubooke_create_initial_mapping(env); } static void mpc8544ds_init(ram_addr_t ram_size, const char *boot_device, const char *kernel_filename, const char *kernel_cmdline, const char *initrd_filename, const char *cpu_model) { MemoryRegion *address_space_mem = get_system_memory(); MemoryRegion *ram = g_new(MemoryRegion, 1); PCIBus *pci_bus; CPUPPCState *env = NULL; uint64_t elf_entry; uint64_t elf_lowaddr; target_phys_addr_t entry=0; target_phys_addr_t loadaddr=UIMAGE_LOAD_BASE; target_long kernel_size=0; target_ulong dt_base = 0; target_ulong initrd_base = 0; target_long initrd_size=0; int i=0; unsigned int pci_irq_nrs[4] = {1, 2, 3, 4}; qemu_irq **irqs, *mpic; DeviceState *dev; CPUPPCState *firstenv = NULL; /* Setup CPUs */ if (cpu_model == NULL) { cpu_model = "e500v2_v30"; } irqs = g_malloc0(smp_cpus * sizeof(qemu_irq *)); irqs[0] = g_malloc0(smp_cpus * sizeof(qemu_irq) * OPENPIC_OUTPUT_NB); for (i = 0; i < smp_cpus; i++) { PowerPCCPU *cpu; qemu_irq *input; cpu = cpu_ppc_init(cpu_model); if (cpu == NULL) { fprintf(stderr, "Unable to initialize CPU!\n"); exit(1); } env = &cpu->env; if (!firstenv) { firstenv = env; } irqs[i] = irqs[0] + (i * OPENPIC_OUTPUT_NB); input = (qemu_irq *)env->irq_inputs; irqs[i][OPENPIC_OUTPUT_INT] = input[PPCE500_INPUT_INT]; irqs[i][OPENPIC_OUTPUT_CINT] = input[PPCE500_INPUT_CINT]; env->spr[SPR_BOOKE_PIR] = env->cpu_index = i; env->mpic_cpu_base = MPC8544_MPIC_REGS_BASE + 0x20000; ppc_booke_timers_init(env, 400000000, PPC_TIMER_E500); /* Register reset handler */ if (!i) { /* Primary CPU */ struct boot_info *boot_info; boot_info = g_malloc0(sizeof(struct boot_info)); qemu_register_reset(mpc8544ds_cpu_reset, cpu); env->load_info = boot_info; } else { /* Secondary CPUs */ qemu_register_reset(mpc8544ds_cpu_reset_sec, cpu); } } env = firstenv; /* Fixup Memory size on a alignment boundary */ ram_size &= ~(RAM_SIZES_ALIGN - 1); /* Register Memory */ memory_region_init_ram(ram, "mpc8544ds.ram", ram_size); vmstate_register_ram_global(ram); memory_region_add_subregion(address_space_mem, 0, ram); /* MPIC */ mpic = mpic_init(address_space_mem, MPC8544_MPIC_REGS_BASE, smp_cpus, irqs, NULL); if (!mpic) { cpu_abort(env, "MPIC failed to initialize\n"); } /* Serial */ if (serial_hds[0]) { serial_mm_init(address_space_mem, MPC8544_SERIAL0_REGS_BASE, 0, mpic[12+26], 399193, serial_hds[0], DEVICE_BIG_ENDIAN); } if (serial_hds[1]) { serial_mm_init(address_space_mem, MPC8544_SERIAL1_REGS_BASE, 0, mpic[12+26], 399193, serial_hds[0], DEVICE_BIG_ENDIAN); } /* General Utility device */ sysbus_create_simple("mpc8544-guts", MPC8544_UTIL_BASE, NULL); /* PCI */ dev = sysbus_create_varargs("e500-pcihost", MPC8544_PCI_REGS_BASE, mpic[pci_irq_nrs[0]], mpic[pci_irq_nrs[1]], mpic[pci_irq_nrs[2]], mpic[pci_irq_nrs[3]], NULL); pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0"); if (!pci_bus) printf("couldn't create PCI controller!\n"); isa_mmio_init(MPC8544_PCI_IO, MPC8544_PCI_IOLEN); if (pci_bus) { /* Register network interfaces. */ for (i = 0; i < nb_nics; i++) { pci_nic_init_nofail(&nd_table[i], "virtio", NULL); } } /* Register spinning region */ sysbus_create_simple("e500-spin", MPC8544_SPIN_BASE, NULL); /* Load kernel. */ if (kernel_filename) { kernel_size = load_uimage(kernel_filename, &entry, &loadaddr, NULL); if (kernel_size < 0) { kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry, &elf_lowaddr, NULL, 1, ELF_MACHINE, 0); entry = elf_entry; loadaddr = elf_lowaddr; } /* XXX try again as binary */ if (kernel_size < 0) { fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename); exit(1); } } /* Load initrd. */ if (initrd_filename) { initrd_base = (kernel_size + INITRD_LOAD_PAD) & ~INITRD_PAD_MASK; initrd_size = load_image_targphys(initrd_filename, initrd_base, ram_size - initrd_base); if (initrd_size < 0) { fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", initrd_filename); exit(1); } } /* If we're loading a kernel directly, we must load the device tree too. */ if (kernel_filename) { struct boot_info *boot_info; int dt_size; dt_base = (loadaddr + kernel_size + DTC_LOAD_PAD) & ~DTC_PAD_MASK; dt_size = mpc8544_load_device_tree(env, dt_base, ram_size, initrd_base, initrd_size, kernel_cmdline); if (dt_size < 0) { fprintf(stderr, "couldn't load device tree\n"); exit(1); } boot_info = env->load_info; boot_info->entry = entry; boot_info->dt_base = dt_base; boot_info->dt_size = dt_size; } if (kvm_enabled()) { kvmppc_init(); } } static QEMUMachine mpc8544ds_machine = { .name = "mpc8544ds", .desc = "mpc8544ds", .init = mpc8544ds_init, .max_cpus = 15, }; static void mpc8544ds_machine_init(void) { qemu_register_machine(&mpc8544ds_machine); } machine_init(mpc8544ds_machine_init);