hw/ppc/virtex_ml507.c

   1 /*
   2  * Model of Xilinx Virtex5 ML507 PPC-440 refdesign.
   3  *
   4  * Copyright (c) 2010 Edgar E. Iglesias.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "hw/sysbus.h"
  26 #include "hw/hw.h"
  27 #include "hw/char/serial.h"
  28 #include "hw/block/flash.h"
  29 #include "sysemu/sysemu.h"
  30 #include "hw/devices.h"
  31 #include "hw/boards.h"
  32 #include "sysemu/device_tree.h"
  33 #include "hw/loader.h"
  34 #include "elf.h"
  35 #include "qemu/error-report.h"
  36 #include "qemu/log.h"
  37 #include "exec/address-spaces.h"
  38
  39 #include "hw/ppc/ppc.h"
  40 #include "hw/ppc/ppc4xx.h"
  41 #include "ppc405.h"
  42
  43 #include "sysemu/block-backend.h"
  44 #include "qapi/qmp/qerror.h"
  45
  46 #define EPAPR_MAGIC    (0x45504150)
  47 #define FLASH_SIZE     (16 * 1024 * 1024)
  48
  49 #define INTC_BASEADDR       0x81800000
  50 #define UART16550_BASEADDR  0x83e01003
  51 #define TIMER_BASEADDR      0x83c00000
  52 #define PFLASH_BASEADDR     0xfc000000
  53
  54 #define TIMER_IRQ           3
  55 #define UART16550_IRQ       9
  56
  57 static struct boot_info
  58 {
  59     uint32_t bootstrap_pc;
  60     uint32_t cmdline;
  61     uint32_t fdt;
  62     uint32_t ima_size;
  63     void *vfdt;
  64 } boot_info;
  65
  66 /* Create reset TLB entries for BookE, spanning the 32bit addr space.  */
  67 static void mmubooke_create_initial_mapping(CPUPPCState *env,
  68                                      target_ulong va,
  69                                      hwaddr pa)
  70 {
  71     ppcemb_tlb_t *tlb = &env->tlb.tlbe[0];
  72
  73     tlb->attr = 0;
  74     tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
  75     tlb->size = 1U << 31; /* up to 0x80000000  */
  76     tlb->EPN = va & TARGET_PAGE_MASK;
  77     tlb->RPN = pa & TARGET_PAGE_MASK;
  78     tlb->PID = 0;
  79
  80     tlb = &env->tlb.tlbe[1];
  81     tlb->attr = 0;
  82     tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
  83     tlb->size = 1U << 31; /* up to 0xffffffff  */
  84     tlb->EPN = 0x80000000 & TARGET_PAGE_MASK;
  85     tlb->RPN = 0x80000000 & TARGET_PAGE_MASK;
  86     tlb->PID = 0;
  87 }
  88
  89 static PowerPCCPU *ppc440_init_xilinx(ram_addr_t *ram_size,
  90                                       int do_init,
  91                                       const char *cpu_model,
  92                                       uint32_t sysclk)
  93 {
  94     PowerPCCPU *cpu;
  95     CPUPPCState *env;
  96     qemu_irq *irqs;
  97
  98     cpu = cpu_ppc_init(cpu_model);
  99     if (cpu == NULL) {
 100         fprintf(stderr, "Unable to initialize CPU!\n");
 101         exit(1);
 102     }
 103     env = &cpu->env;
 104
 105     ppc_booke_timers_init(cpu, sysclk, 0/* no flags */);
 106
 107     ppc_dcr_init(env, NULL, NULL);
 108
 109     /* interrupt controller */
 110     irqs = g_malloc0(sizeof(qemu_irq) * PPCUIC_OUTPUT_NB);
 111     irqs[PPCUIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT];
 112     irqs[PPCUIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT];
 113     ppcuic_init(env, irqs, 0x0C0, 0, 1);
 114     return cpu;
 115 }
 116
 117 static void main_cpu_reset(void *opaque)
 118 {
 119     PowerPCCPU *cpu = opaque;
 120     CPUPPCState *env = &cpu->env;
 121     struct boot_info *bi = env->load_info;
 122
 123     cpu_reset(CPU(cpu));
 124     /* Linux Kernel Parameters (passing device tree):
 125        *   r3: pointer to the fdt
 126        *   r4: 0
 127        *   r5: 0
 128        *   r6: epapr magic
 129        *   r7: size of IMA in bytes
 130        *   r8: 0
 131        *   r9: 0
 132     */
 133     env->gpr[1] = (16<<20) - 8;
 134     /* Provide a device-tree.  */
 135     env->gpr[3] = bi->fdt;
 136     env->nip = bi->bootstrap_pc;
 137
 138     /* Create a mapping for the kernel.  */
 139     mmubooke_create_initial_mapping(env, 0, 0);
 140     env->gpr[6] = tswap32(EPAPR_MAGIC);
 141     env->gpr[7] = bi->ima_size;
 142 }
 143
 144 #define BINARY_DEVICE_TREE_FILE "virtex-ml507.dtb"
 145 static int xilinx_load_device_tree(hwaddr addr,
 146                                       uint32_t ramsize,
 147                                       hwaddr initrd_base,
 148                                       hwaddr initrd_size,
 149                                       const char *kernel_cmdline)
 150 {
 151     char *path;
 152     int fdt_size;
 153     void *fdt = NULL;
 154     int r;
 155     const char *dtb_filename;
 156
 157     dtb_filename = qemu_opt_get(qemu_get_machine_opts(), "dtb");
 158     if (dtb_filename) {
 159         fdt = load_device_tree(dtb_filename, &fdt_size);
 160         if (!fdt) {
 161             error_report("Error while loading device tree file '%s'",
 162                 dtb_filename);
 163         }
 164     } else {
 165         /* Try the local "ppc.dtb" override.  */
 166         fdt = load_device_tree("ppc.dtb", &fdt_size);
 167         if (!fdt) {
 168             path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
 169             if (path) {
 170                 fdt = load_device_tree(path, &fdt_size);
 171                 g_free(path);
 172             }
 173         }
 174     }
 175     if (!fdt) {
 176         return 0;
 177     }
 178
 179     r = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start",
 180                               initrd_base);
 181     if (r < 0) {
 182         error_report("couldn't set /chosen/linux,initrd-start");
 183     }
 184
 185     r = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end",
 186                               (initrd_base + initrd_size));
 187     if (r < 0) {
 188         error_report("couldn't set /chosen/linux,initrd-end");
 189     }
 190
 191     r = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline);
 192     if (r < 0)
 193         fprintf(stderr, "couldn't set /chosen/bootargs\n");
 194     cpu_physical_memory_write(addr, fdt, fdt_size);
 195     return fdt_size;
 196 }
 197
 198 static void virtex_init(MachineState *machine)
 199 {
 200     ram_addr_t ram_size = machine->ram_size;
 201     const char *cpu_model = machine->cpu_model;
 202     const char *kernel_filename = machine->kernel_filename;
 203     const char *kernel_cmdline = machine->kernel_cmdline;
 204     hwaddr initrd_base = 0;
 205     int initrd_size = 0;
 206     MemoryRegion *address_space_mem = get_system_memory();
 207     DeviceState *dev;
 208     PowerPCCPU *cpu;
 209     CPUPPCState *env;
 210     hwaddr ram_base = 0;
 211     DriveInfo *dinfo;
 212     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
 213     qemu_irq irq[32], *cpu_irq;
 214     int kernel_size;
 215     int i;
 216
 217     /* init CPUs */
 218     if (cpu_model == NULL) {
 219         cpu_model = "440-Xilinx";
 220     }
 221
 222     cpu = ppc440_init_xilinx(&ram_size, 1, cpu_model, 400000000);
 223     env = &cpu->env;
 224     qemu_register_reset(main_cpu_reset, cpu);
 225
 226     memory_region_allocate_system_memory(phys_ram, NULL, "ram", ram_size);
 227     memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
 228
 229     dinfo = drive_get(IF_PFLASH, 0, 0);
 230     pflash_cfi01_register(PFLASH_BASEADDR, NULL, "virtex.flash", FLASH_SIZE,
 231                           dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
 232                           (64 * 1024), FLASH_SIZE >> 16,
 233                           1, 0x89, 0x18, 0x0000, 0x0, 1);
 234
 235     cpu_irq = (qemu_irq *) &env->irq_inputs[PPC40x_INPUT_INT];
 236     dev = qdev_create(NULL, "xlnx.xps-intc");
 237     qdev_prop_set_uint32(dev, "kind-of-intr", 0);
 238     qdev_init_nofail(dev);
 239     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, INTC_BASEADDR);
 240     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, cpu_irq[0]);
 241     for (i = 0; i < 32; i++) {
 242         irq[i] = qdev_get_gpio_in(dev, i);
 243     }
 244
 245     serial_mm_init(address_space_mem, UART16550_BASEADDR, 2, irq[UART16550_IRQ],
 246                    115200, serial_hds[0], DEVICE_LITTLE_ENDIAN);
 247
 248     /* 2 timers at irq 2 @ 62 Mhz.  */
 249     dev = qdev_create(NULL, "xlnx.xps-timer");
 250     qdev_prop_set_uint32(dev, "one-timer-only", 0);
 251     qdev_prop_set_uint32(dev, "clock-frequency", 62 * 1000000);
 252     qdev_init_nofail(dev);
 253     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, TIMER_BASEADDR);
 254     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[TIMER_IRQ]);
 255
 256     if (kernel_filename) {
 257         uint64_t entry, low, high;
 258         hwaddr boot_offset;
 259
 260         /* Boots a kernel elf binary.  */
 261         kernel_size = load_elf(kernel_filename, NULL, NULL,
 262                                &entry, &low, &high, 1, ELF_MACHINE, 0);
 263         boot_info.bootstrap_pc = entry & 0x00ffffff;
 264
 265         if (kernel_size < 0) {
 266             boot_offset = 0x1200000;
 267             /* If we failed loading ELF's try a raw image.  */
 268             kernel_size = load_image_targphys(kernel_filename,
 269                                               boot_offset,
 270                                               ram_size);
 271             boot_info.bootstrap_pc = boot_offset;
 272             high = boot_info.bootstrap_pc + kernel_size + 8192;
 273         }
 274
 275         boot_info.ima_size = kernel_size;
 276
 277         /* Load initrd. */
 278         if (machine->initrd_filename) {
 279             initrd_base = high = ROUND_UP(high, 4);
 280             initrd_size = load_image_targphys(machine->initrd_filename,
 281                                               high, ram_size - high);
 282
 283             if (initrd_size < 0) {
 284                 error_report("couldn't load ram disk '%s'",
 285                              machine->initrd_filename);
 286                 exit(1);
 287             }
 288             high = ROUND_UP(high + initrd_size, 4);
 289         }
 290
 291         /* Provide a device-tree.  */
 292         boot_info.fdt = high + (8192 * 2);
 293         boot_info.fdt &= ~8191;
 294
 295         xilinx_load_device_tree(boot_info.fdt, ram_size,
 296                                 initrd_base, initrd_size,
 297                                 kernel_cmdline);
 298     }
 299     env->load_info = &boot_info;
 300 }
 301
 302 static QEMUMachine virtex_machine = {
 303     .name = "virtex-ml507",
 304     .desc = "Xilinx Virtex ML507 reference design",
 305     .init = virtex_init,
 306 };
 307
 308 static void virtex_machine_init(void)
 309 {
 310     qemu_register_machine(&virtex_machine);
 311 }
 312
 313 machine_init(virtex_machine_init);