hw/ppce500_mpc8544ds.c

   1 /*
   2  * Qemu PowerPC MPC8544DS board emualtion
   3  *
   4  * Copyright (C) 2009 Freescale Semiconductor, Inc. All rights reserved.
   5  *
   6  * Author: Yu Liu,     <yu.liu@freescale.com>
   7  *
   8  * This file is derived from hw/ppc440_bamboo.c,
   9  * the copyright for that material belongs to the original owners.
  10  *
  11  * This is free software; you can redistribute it and/or modify
  12  * it under the terms of  the GNU General  Public License as published by
  13  * the Free Software Foundation;  either version 2 of the  License, or
  14  * (at your option) any later version.
  15  */
  16
  17 #include <dirent.h>
  18
  19 #include "config.h"
  20 #include "qemu-common.h"
  21 #include "net.h"
  22 #include "hw.h"
  23 #include "pc.h"
  24 #include "pci.h"
  25 #include "boards.h"
  26 #include "sysemu.h"
  27 #include "kvm.h"
  28 #include "kvm_ppc.h"
  29 #include "device_tree.h"
  30 #include "openpic.h"
  31 #include "ppce500.h"
  32 #include "loader.h"
  33 #include "elf.h"
  34
  35 #define BINARY_DEVICE_TREE_FILE    "mpc8544ds.dtb"
  36 #define UIMAGE_LOAD_BASE           0
  37 #define DTC_LOAD_PAD               0x500000
  38 #define DTC_PAD_MASK               0xFFFFF
  39 #define INITRD_LOAD_PAD            0x2000000
  40 #define INITRD_PAD_MASK            0xFFFFFF
  41
  42 #define RAM_SIZES_ALIGN            (64UL << 20)
  43
  44 #define MPC8544_CCSRBAR_BASE       0xE0000000
  45 #define MPC8544_MPIC_REGS_BASE     (MPC8544_CCSRBAR_BASE + 0x40000)
  46 #define MPC8544_SERIAL0_REGS_BASE  (MPC8544_CCSRBAR_BASE + 0x4500)
  47 #define MPC8544_SERIAL1_REGS_BASE  (MPC8544_CCSRBAR_BASE + 0x4600)
  48 #define MPC8544_PCI_REGS_BASE      (MPC8544_CCSRBAR_BASE + 0x8000)
  49 #define MPC8544_PCI_REGS_SIZE      0x1000
  50 #define MPC8544_PCI_IO             0xE1000000
  51 #define MPC8544_PCI_IOLEN          0x10000
  52
  53 #ifdef CONFIG_FDT
  54 static int mpc8544_copy_soc_cell(void *fdt, const char *node, const char *prop)
  55 {
  56     uint32_t cell;
  57     int ret;
  58
  59     ret = kvmppc_read_host_property(node, prop, &cell, sizeof(cell));
  60     if (ret < 0) {
  61         fprintf(stderr, "couldn't read host %s/%s\n", node, prop);
  62         goto out;
  63     }
  64
  65     ret = qemu_devtree_setprop_cell(fdt, "/cpus/PowerPC,8544@0",
  66                                 prop, cell);
  67     if (ret < 0) {
  68         fprintf(stderr, "couldn't set guest /cpus/PowerPC,8544@0/%s\n", prop);
  69         goto out;
  70     }
  71
  72 out:
  73     return ret;
  74 }
  75 #endif
  76
  77 static int mpc8544_load_device_tree(target_phys_addr_t addr,
  78                                      uint32_t ramsize,
  79                                      target_phys_addr_t initrd_base,
  80                                      target_phys_addr_t initrd_size,
  81                                      const char *kernel_cmdline)
  82 {
  83     int ret = -1;
  84 #ifdef CONFIG_FDT
  85     uint32_t mem_reg_property[] = {0, ramsize};
  86     char *filename;
  87     int fdt_size;
  88     void *fdt;
  89
  90     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
  91     if (!filename) {
  92         goto out;
  93     }
  94     fdt = load_device_tree(filename, &fdt_size);
  95     qemu_free(filename);
  96     if (fdt == NULL) {
  97         goto out;
  98     }
  99
 100     /* Manipulate device tree in memory. */
 101     ret = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property,
 102                                sizeof(mem_reg_property));
 103     if (ret < 0)
 104         fprintf(stderr, "couldn't set /memory/reg\n");
 105
 106     ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start",
 107                                     initrd_base);
 108     if (ret < 0)
 109         fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
 110
 111     ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end",
 112                                     (initrd_base + initrd_size));
 113     if (ret < 0)
 114         fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
 115
 116     ret = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs",
 117                                       kernel_cmdline);
 118     if (ret < 0)
 119         fprintf(stderr, "couldn't set /chosen/bootargs\n");
 120
 121     if (kvm_enabled()) {
 122         struct dirent *dirp;
 123         DIR *dp;
 124         char buf[128];
 125
 126         if ((dp = opendir("/proc/device-tree/cpus/")) == NULL) {
 127             printf("Can't open directory /proc/device-tree/cpus/\n");
 128             ret = -1;
 129             goto out;
 130         }
 131
 132         buf[0] = '\0';
 133         while ((dirp = readdir(dp)) != NULL) {
 134             if (strncmp(dirp->d_name, "PowerPC", 7) == 0) {
 135                 snprintf(buf, 128, "/cpus/%s", dirp->d_name);
 136                 break;
 137             }
 138         }
 139         closedir(dp);
 140         if (buf[0] == '\0') {
 141             printf("Unknow host!\n");
 142             ret = -1;
 143             goto out;
 144         }
 145
 146         mpc8544_copy_soc_cell(fdt, buf, "clock-frequency");
 147         mpc8544_copy_soc_cell(fdt, buf, "timebase-frequency");
 148     }
 149
 150     ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
 151     qemu_free(fdt);
 152
 153 out:
 154 #endif
 155
 156     return ret;
 157 }
 158
 159 static void mpc8544ds_init(ram_addr_t ram_size,
 160                          const char *boot_device,
 161                          const char *kernel_filename,
 162                          const char *kernel_cmdline,
 163                          const char *initrd_filename,
 164                          const char *cpu_model)
 165 {
 166     PCIBus *pci_bus;
 167     CPUState *env;
 168     uint64_t elf_entry;
 169     uint64_t elf_lowaddr;
 170     target_phys_addr_t entry=0;
 171     target_phys_addr_t loadaddr=UIMAGE_LOAD_BASE;
 172     target_long kernel_size=0;
 173     target_ulong dt_base = 0;
 174     target_ulong initrd_base = 0;
 175     target_long initrd_size=0;
 176     int i=0;
 177     unsigned int pci_irq_nrs[4] = {1, 2, 3, 4};
 178     qemu_irq *irqs, *mpic, *pci_irqs;
 179
 180     /* Setup CPU */
 181     env = cpu_ppc_init("e500v2_v30");
 182     if (!env) {
 183         fprintf(stderr, "Unable to initialize CPU!\n");
 184         exit(1);
 185     }
 186
 187     /* Fixup Memory size on a alignment boundary */
 188     ram_size &= ~(RAM_SIZES_ALIGN - 1);
 189
 190     /* Register Memory */
 191     cpu_register_physical_memory(0, ram_size, qemu_ram_alloc(NULL,
 192                                  "mpc8544ds.ram", ram_size));
 193
 194     /* MPIC */
 195     irqs = qemu_mallocz(sizeof(qemu_irq) * OPENPIC_OUTPUT_NB);
 196     irqs[OPENPIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPCE500_INPUT_INT];
 197     irqs[OPENPIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPCE500_INPUT_CINT];
 198     mpic = mpic_init(MPC8544_MPIC_REGS_BASE, 1, &irqs, NULL);
 199
 200     /* Serial */
 201     if (serial_hds[0]) {
 202         serial_mm_init(MPC8544_SERIAL0_REGS_BASE,
 203                        0, mpic[12+26], 399193,
 204                        serial_hds[0], 1, 1);
 205     }
 206
 207     if (serial_hds[1]) {
 208         serial_mm_init(MPC8544_SERIAL1_REGS_BASE,
 209                        0, mpic[12+26], 399193,
 210                        serial_hds[0], 1, 1);
 211     }
 212
 213     /* PCI */
 214     pci_irqs = qemu_malloc(sizeof(qemu_irq) * 4);
 215     pci_irqs[0] = mpic[pci_irq_nrs[0]];
 216     pci_irqs[1] = mpic[pci_irq_nrs[1]];
 217     pci_irqs[2] = mpic[pci_irq_nrs[2]];
 218     pci_irqs[3] = mpic[pci_irq_nrs[3]];
 219     pci_bus = ppce500_pci_init(pci_irqs, MPC8544_PCI_REGS_BASE);
 220     if (!pci_bus)
 221         printf("couldn't create PCI controller!\n");
 222
 223     isa_mmio_init(MPC8544_PCI_IO, MPC8544_PCI_IOLEN, 1);
 224
 225     if (pci_bus) {
 226         /* Register network interfaces. */
 227         for (i = 0; i < nb_nics; i++) {
 228             pci_nic_init_nofail(&nd_table[i], "virtio", NULL);
 229         }
 230     }
 231
 232     /* Load kernel. */
 233     if (kernel_filename) {
 234         kernel_size = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
 235         if (kernel_size < 0) {
 236             kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry,
 237                                    &elf_lowaddr, NULL, 1, ELF_MACHINE, 0);
 238             entry = elf_entry;
 239             loadaddr = elf_lowaddr;
 240         }
 241         /* XXX try again as binary */
 242         if (kernel_size < 0) {
 243             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 244                     kernel_filename);
 245             exit(1);
 246         }
 247     }
 248
 249     /* Load initrd. */
 250     if (initrd_filename) {
 251         initrd_base = (kernel_size + INITRD_LOAD_PAD) & ~INITRD_PAD_MASK;
 252         initrd_size = load_image_targphys(initrd_filename, initrd_base,
 253                                           ram_size - initrd_base);
 254
 255         if (initrd_size < 0) {
 256             fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
 257                     initrd_filename);
 258             exit(1);
 259         }
 260     }
 261
 262     /* If we're loading a kernel directly, we must load the device tree too. */
 263     if (kernel_filename) {
 264         dt_base = (kernel_size + DTC_LOAD_PAD) & ~DTC_PAD_MASK;
 265         if (mpc8544_load_device_tree(dt_base, ram_size,
 266                     initrd_base, initrd_size, kernel_cmdline) < 0) {
 267             fprintf(stderr, "couldn't load device tree\n");
 268             exit(1);
 269         }
 270
 271         cpu_synchronize_state(env);
 272
 273         /* Set initial guest state. */
 274         env->gpr[1] = (16<<20) - 8;
 275         env->gpr[3] = dt_base;
 276         env->nip = entry;
 277         /* XXX we currently depend on KVM to create some initial TLB entries. */
 278     }
 279
 280     if (kvm_enabled())
 281         kvmppc_init();
 282
 283     return;
 284 }
 285
 286 static QEMUMachine mpc8544ds_machine = {
 287     .name = "mpc8544ds",
 288     .desc = "mpc8544ds",
 289     .init = mpc8544ds_init,
 290 };
 291
 292 static void mpc8544ds_machine_init(void)
 293 {
 294     qemu_register_machine(&mpc8544ds_machine);
 295 }
 296
 297 machine_init(mpc8544ds_machine_init);