| /* |
| * Qemu PowerPC MPC8544DS board emualtion |
| * |
| * Copyright (C) 2009 Freescale Semiconductor, Inc. All rights reserved. |
| * |
| * Author: Yu Liu, <yu.liu@freescale.com> |
| * |
| * 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 <dirent.h> |
| |
| #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" |
| |
| #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 0xE0000000 |
| #define MPC8544_MPIC_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x40000) |
| #define MPC8544_SERIAL0_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x4500) |
| #define MPC8544_SERIAL1_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x4600) |
| #define MPC8544_PCI_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x8000) |
| #define MPC8544_PCI_REGS_SIZE 0x1000 |
| #define MPC8544_PCI_IO 0xE1000000 |
| #define MPC8544_PCI_IOLEN 0x10000 |
| #define MPC8544_UTIL_BASE (MPC8544_CCSRBAR_BASE + 0xe0000) |
| |
| struct boot_info |
| { |
| uint32_t dt_base; |
| uint32_t entry; |
| }; |
| |
| #ifdef CONFIG_FDT |
| static int mpc8544_copy_soc_cell(void *fdt, const char *node, const char *prop) |
| { |
| uint32_t cell; |
| int ret; |
| |
| ret = kvmppc_read_host_property(node, prop, &cell, sizeof(cell)); |
| if (ret < 0) { |
| fprintf(stderr, "couldn't read host %s/%s\n", node, prop); |
| goto out; |
| } |
| |
| ret = qemu_devtree_setprop_cell(fdt, "/cpus/PowerPC,8544@0", |
| prop, cell); |
| if (ret < 0) { |
| fprintf(stderr, "couldn't set guest /cpus/PowerPC,8544@0/%s\n", prop); |
| goto out; |
| } |
| |
| out: |
| return ret; |
| } |
| #endif |
| |
| static int mpc8544_load_device_tree(CPUState *env, |
| target_phys_addr_t addr, |
| uint32_t ramsize, |
| target_phys_addr_t initrd_base, |
| target_phys_addr_t initrd_size, |
| const char *kernel_cmdline) |
| { |
| int ret = -1; |
| #ifdef CONFIG_FDT |
| uint32_t mem_reg_property[] = {0, cpu_to_be32(ramsize)}; |
| char *filename; |
| int fdt_size; |
| void *fdt; |
| uint8_t hypercall[16]; |
| |
| filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE); |
| if (!filename) { |
| goto out; |
| } |
| fdt = load_device_tree(filename, &fdt_size); |
| qemu_free(filename); |
| if (fdt == NULL) { |
| goto out; |
| } |
| |
| /* Manipulate device tree in memory. */ |
| ret = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property, |
| sizeof(mem_reg_property)); |
| if (ret < 0) |
| fprintf(stderr, "couldn't set /memory/reg\n"); |
| |
| 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()) { |
| struct dirent *dirp; |
| DIR *dp; |
| char buf[128]; |
| |
| if ((dp = opendir("/proc/device-tree/cpus/")) == NULL) { |
| printf("Can't open directory /proc/device-tree/cpus/\n"); |
| ret = -1; |
| goto out; |
| } |
| |
| buf[0] = '\0'; |
| while ((dirp = readdir(dp)) != NULL) { |
| if (strncmp(dirp->d_name, "PowerPC", 7) == 0) { |
| snprintf(buf, 128, "/cpus/%s", dirp->d_name); |
| break; |
| } |
| } |
| closedir(dp); |
| if (buf[0] == '\0') { |
| printf("Unknow host!\n"); |
| ret = -1; |
| goto out; |
| } |
| |
| mpc8544_copy_soc_cell(fdt, buf, "clock-frequency"); |
| mpc8544_copy_soc_cell(fdt, buf, "timebase-frequency"); |
| |
| /* indicate KVM hypercall interface */ |
| 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)); |
| } else { |
| const uint32_t freq = 400000000; |
| |
| qemu_devtree_setprop_cell(fdt, "/cpus/PowerPC,8544@0", |
| "clock-frequency", freq); |
| qemu_devtree_setprop_cell(fdt, "/cpus/PowerPC,8544@0", |
| "timebase-frequency", freq); |
| } |
| |
| ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr); |
| qemu_free(fdt); |
| |
| out: |
| #endif |
| |
| return ret; |
| } |
| |
| /* Create -kernel TLB entries for BookE, linearly spanning 256MB. */ |
| static inline target_phys_addr_t booke206_page_size_to_tlb(uint64_t size) |
| { |
| return (ffs(size >> 10) - 1) >> 1; |
| } |
| |
| static void mmubooke_create_initial_mapping(CPUState *env, |
| target_ulong va, |
| target_phys_addr_t pa) |
| { |
| ppcmas_tlb_t *tlb = booke206_get_tlbm(env, 1, 0, 0); |
| target_phys_addr_t size; |
| |
| size = (booke206_page_size_to_tlb(256 * 1024 * 1024) << MAS1_TSIZE_SHIFT); |
| tlb->mas1 = MAS1_VALID | size; |
| tlb->mas2 = va & TARGET_PAGE_MASK; |
| tlb->mas7_3 = pa & TARGET_PAGE_MASK; |
| tlb->mas7_3 |= MAS3_UR | MAS3_UW | MAS3_UX | MAS3_SR | MAS3_SW | MAS3_SX; |
| } |
| |
| static void mpc8544ds_cpu_reset(void *opaque) |
| { |
| CPUState *env = opaque; |
| struct boot_info *bi = env->load_info; |
| |
| cpu_reset(env); |
| |
| /* Set initial guest state. */ |
| env->gpr[1] = (16<<20) - 8; |
| env->gpr[3] = bi->dt_base; |
| env->nip = bi->entry; |
| mmubooke_create_initial_mapping(env, 0, 0); |
| } |
| |
| 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) |
| { |
| PCIBus *pci_bus; |
| CPUState *env; |
| 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; |
| struct boot_info *boot_info; |
| |
| /* Setup CPU */ |
| if (cpu_model == NULL) { |
| cpu_model = "e500v2_v30"; |
| } |
| |
| env = cpu_ppc_init(cpu_model); |
| if (!env) { |
| fprintf(stderr, "Unable to initialize CPU!\n"); |
| exit(1); |
| } |
| |
| /* XXX register timer? */ |
| ppc_emb_timers_init(env, 400000000, PPC_INTERRUPT_DECR); |
| ppc_dcr_init(env, NULL, NULL); |
| |
| /* Register reset handler */ |
| qemu_register_reset(mpc8544ds_cpu_reset, env); |
| |
| /* Fixup Memory size on a alignment boundary */ |
| ram_size &= ~(RAM_SIZES_ALIGN - 1); |
| |
| /* Register Memory */ |
| cpu_register_physical_memory(0, ram_size, qemu_ram_alloc(NULL, |
| "mpc8544ds.ram", ram_size)); |
| |
| /* MPIC */ |
| irqs = qemu_mallocz(sizeof(qemu_irq) * OPENPIC_OUTPUT_NB); |
| irqs[OPENPIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPCE500_INPUT_INT]; |
| irqs[OPENPIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPCE500_INPUT_CINT]; |
| mpic = mpic_init(MPC8544_MPIC_REGS_BASE, 1, &irqs, NULL); |
| |
| /* Serial */ |
| if (serial_hds[0]) { |
| serial_mm_init(MPC8544_SERIAL0_REGS_BASE, |
| 0, mpic[12+26], 399193, |
| serial_hds[0], 1, 1); |
| } |
| |
| if (serial_hds[1]) { |
| serial_mm_init(MPC8544_SERIAL1_REGS_BASE, |
| 0, mpic[12+26], 399193, |
| serial_hds[0], 1, 1); |
| } |
| |
| /* 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); |
| } |
| } |
| |
| /* 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); |
| } |
| } |
| |
| boot_info = qemu_mallocz(sizeof(struct boot_info)); |
| |
| /* If we're loading a kernel directly, we must load the device tree too. */ |
| if (kernel_filename) { |
| #ifndef CONFIG_FDT |
| cpu_abort(env, "Compiled without FDT support - can't load kernel\n"); |
| #endif |
| dt_base = (kernel_size + DTC_LOAD_PAD) & ~DTC_PAD_MASK; |
| if (mpc8544_load_device_tree(env, dt_base, ram_size, |
| initrd_base, initrd_size, kernel_cmdline) < 0) { |
| fprintf(stderr, "couldn't load device tree\n"); |
| exit(1); |
| } |
| |
| boot_info->entry = entry; |
| boot_info->dt_base = dt_base; |
| } |
| env->load_info = boot_info; |
| |
| if (kvm_enabled()) { |
| kvmppc_init(); |
| } |
| } |
| |
| static QEMUMachine mpc8544ds_machine = { |
| .name = "mpc8544ds", |
| .desc = "mpc8544ds", |
| .init = mpc8544ds_init, |
| }; |
| |
| static void mpc8544ds_machine_init(void) |
| { |
| qemu_register_machine(&mpc8544ds_machine); |
| } |
| |
| machine_init(mpc8544ds_machine_init); |
