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 "qemu/osdep.h"
  26 #include "cpu.h"
  27 #include "hw/sysbus.h"
  28 #include "hw/hw.h"
  29 #include "hw/char/serial.h"
  30 #include "hw/block/flash.h"
  31 #include "sysemu/sysemu.h"
  32 #include "hw/devices.h"
  33 #include "hw/boards.h"
  34 #include "sysemu/device_tree.h"
  35 #include "hw/loader.h"
  36 #include "elf.h"
  37 #include "qemu/error-report.h"
  38 #include "qemu/log.h"
  39 #include "exec/address-spaces.h"
  40
  41 #include "hw/ppc/ppc.h"
  42 #include "hw/ppc/ppc4xx.h"
  43 #include "ppc405.h"
  44
  45 #include "sysemu/block-backend.h"
  46
  47 #define EPAPR_MAGIC    (0x45504150)
  48 #define FLASH_SIZE     (16 * 1024 * 1024)
  49
  50 #define INTC_BASEADDR       0x81800000
  51 #define UART16550_BASEADDR  0x83e01003
  52 #define TIMER_BASEADDR      0x83c00000
  53 #define PFLASH_BASEADDR     0xfc000000
  54
  55 #define TIMER_IRQ           3
  56 #define UART16550_IRQ       9
  57
  58 static struct boot_info
  59 {
  60     uint32_t bootstrap_pc;
  61     uint32_t cmdline;
  62     uint32_t fdt;
  63     uint32_t ima_size;
  64     void *vfdt;
  65 } boot_info;
  66
  67 /* Create reset TLB entries for BookE, spanning the 32bit addr space.  */
  68 static void mmubooke_create_initial_mapping(CPUPPCState *env,
  69                                      target_ulong va,
  70                                      hwaddr pa)
  71 {
  72     ppcemb_tlb_t *tlb = &env->tlb.tlbe[0];
  73
  74     tlb->attr = 0;
  75     tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
  76     tlb->size = 1U << 31; /* up to 0x80000000  */
  77     tlb->EPN = va & TARGET_PAGE_MASK;
  78     tlb->RPN = pa & TARGET_PAGE_MASK;
  79     tlb->PID = 0;
  80
  81     tlb = &env->tlb.tlbe[1];
  82     tlb->attr = 0;
  83     tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
  84     tlb->size = 1U << 31; /* up to 0xffffffff  */
  85     tlb->EPN = 0x80000000 & TARGET_PAGE_MASK;
  86     tlb->RPN = 0x80000000 & TARGET_PAGE_MASK;
  87     tlb->PID = 0;
  88 }
  89
  90 static PowerPCCPU *ppc440_init_xilinx(ram_addr_t *ram_size,
  91                                       int do_init,
  92                                       const char *cpu_model,
  93                                       uint32_t sysclk)
  94 {
  95     PowerPCCPU *cpu;
  96     CPUPPCState *env;
  97     qemu_irq *irqs;
  98
  99     cpu = POWERPC_CPU(cpu_generic_init(TYPE_POWERPC_CPU, cpu_model));
 100     env = &cpu->env;
 101
 102     ppc_booke_timers_init(cpu, sysclk, 0/* no flags */);
 103
 104     ppc_dcr_init(env, NULL, NULL);
 105
 106     /* interrupt controller */
 107     irqs = g_malloc0(sizeof(qemu_irq) * PPCUIC_OUTPUT_NB);
 108     irqs[PPCUIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT];
 109     irqs[PPCUIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT];
 110     ppcuic_init(env, irqs, 0x0C0, 0, 1);
 111     return cpu;
 112 }
 113
 114 static void main_cpu_reset(void *opaque)
 115 {
 116     PowerPCCPU *cpu = opaque;
 117     CPUPPCState *env = &cpu->env;
 118     struct boot_info *bi = env->load_info;
 119
 120     cpu_reset(CPU(cpu));
 121     /* Linux Kernel Parameters (passing device tree):
 122        *   r3: pointer to the fdt
 123        *   r4: 0
 124        *   r5: 0
 125        *   r6: epapr magic
 126        *   r7: size of IMA in bytes
 127        *   r8: 0
 128        *   r9: 0
 129     */
 130     env->gpr[1] = (16<<20) - 8;
 131     /* Provide a device-tree.  */
 132     env->gpr[3] = bi->fdt;
 133     env->nip = bi->bootstrap_pc;
 134
 135     /* Create a mapping for the kernel.  */
 136     mmubooke_create_initial_mapping(env, 0, 0);
 137     env->gpr[6] = tswap32(EPAPR_MAGIC);
 138     env->gpr[7] = bi->ima_size;
 139 }
 140
 141 #define BINARY_DEVICE_TREE_FILE "virtex-ml507.dtb"
 142 static int xilinx_load_device_tree(hwaddr addr,
 143                                       uint32_t ramsize,
 144                                       hwaddr initrd_base,
 145                                       hwaddr initrd_size,
 146                                       const char *kernel_cmdline)
 147 {
 148     char *path;
 149     int fdt_size;
 150     void *fdt = NULL;
 151     int r;
 152     const char *dtb_filename;
 153
 154     dtb_filename = qemu_opt_get(qemu_get_machine_opts(), "dtb");
 155     if (dtb_filename) {
 156         fdt = load_device_tree(dtb_filename, &fdt_size);
 157         if (!fdt) {
 158             error_report("Error while loading device tree file '%s'",
 159                 dtb_filename);
 160         }
 161     } else {
 162         /* Try the local "ppc.dtb" override.  */
 163         fdt = load_device_tree("ppc.dtb", &fdt_size);
 164         if (!fdt) {
 165             path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
 166             if (path) {
 167                 fdt = load_device_tree(path, &fdt_size);
 168                 g_free(path);
 169             }
 170         }
 171     }
 172     if (!fdt) {
 173         return 0;
 174     }
 175
 176     r = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start",
 177                               initrd_base);
 178     if (r < 0) {
 179         error_report("couldn't set /chosen/linux,initrd-start");
 180     }
 181
 182     r = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end",
 183                               (initrd_base + initrd_size));
 184     if (r < 0) {
 185         error_report("couldn't set /chosen/linux,initrd-end");
 186     }
 187
 188     r = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline);
 189     if (r < 0)
 190         fprintf(stderr, "couldn't set /chosen/bootargs\n");
 191     cpu_physical_memory_write(addr, fdt, fdt_size);
 192     return fdt_size;
 193 }
 194
 195 static void virtex_init(MachineState *machine)
 196 {
 197     ram_addr_t ram_size = machine->ram_size;
 198     const char *kernel_filename = machine->kernel_filename;
 199     const char *kernel_cmdline = machine->kernel_cmdline;
 200     hwaddr initrd_base = 0;
 201     int initrd_size = 0;
 202     MemoryRegion *address_space_mem = get_system_memory();
 203     DeviceState *dev;
 204     PowerPCCPU *cpu;
 205     CPUPPCState *env;
 206     hwaddr ram_base = 0;
 207     DriveInfo *dinfo;
 208     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
 209     qemu_irq irq[32], *cpu_irq;
 210     int kernel_size;
 211     int i;
 212
 213     /* init CPUs */
 214     if (machine->cpu_model == NULL) {
 215         machine->cpu_model = "440-Xilinx";
 216     }
 217
 218     cpu = ppc440_init_xilinx(&ram_size, 1, machine->cpu_model, 400000000);
 219     env = &cpu->env;
 220
 221     if (env->mmu_model != POWERPC_MMU_BOOKE) {
 222         fprintf(stderr, "MMU model %i not supported by this machine.\n",
 223             env->mmu_model);
 224         exit(1);
 225     }
 226
 227     qemu_register_reset(main_cpu_reset, cpu);
 228
 229     memory_region_allocate_system_memory(phys_ram, NULL, "ram", ram_size);
 230     memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
 231
 232     dinfo = drive_get(IF_PFLASH, 0, 0);
 233     pflash_cfi01_register(PFLASH_BASEADDR, NULL, "virtex.flash", FLASH_SIZE,
 234                           dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
 235                           (64 * 1024), FLASH_SIZE >> 16,
 236                           1, 0x89, 0x18, 0x0000, 0x0, 1);
 237
 238     cpu_irq = (qemu_irq *) &env->irq_inputs[PPC40x_INPUT_INT];
 239     dev = qdev_create(NULL, "xlnx.xps-intc");
 240     qdev_prop_set_uint32(dev, "kind-of-intr", 0);
 241     qdev_init_nofail(dev);
 242     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, INTC_BASEADDR);
 243     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, cpu_irq[0]);
 244     for (i = 0; i < 32; i++) {
 245         irq[i] = qdev_get_gpio_in(dev, i);
 246     }
 247
 248     serial_mm_init(address_space_mem, UART16550_BASEADDR, 2, irq[UART16550_IRQ],
 249                    115200, serial_hds[0], DEVICE_LITTLE_ENDIAN);
 250
 251     /* 2 timers at irq 2 @ 62 Mhz.  */
 252     dev = qdev_create(NULL, "xlnx.xps-timer");
 253     qdev_prop_set_uint32(dev, "one-timer-only", 0);
 254     qdev_prop_set_uint32(dev, "clock-frequency", 62 * 1000000);
 255     qdev_init_nofail(dev);
 256     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, TIMER_BASEADDR);
 257     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[TIMER_IRQ]);
 258
 259     if (kernel_filename) {
 260         uint64_t entry, low, high;
 261         hwaddr boot_offset;
 262
 263         /* Boots a kernel elf binary.  */
 264         kernel_size = load_elf(kernel_filename, NULL, NULL,
 265                                &entry, &low, &high, 1, PPC_ELF_MACHINE,
 266                                0, 0);
 267         boot_info.bootstrap_pc = entry & 0x00ffffff;
 268
 269         if (kernel_size < 0) {
 270             boot_offset = 0x1200000;
 271             /* If we failed loading ELF's try a raw image.  */
 272             kernel_size = load_image_targphys(kernel_filename,
 273                                               boot_offset,
 274                                               ram_size);
 275             boot_info.bootstrap_pc = boot_offset;
 276             high = boot_info.bootstrap_pc + kernel_size + 8192;
 277         }
 278
 279         boot_info.ima_size = kernel_size;
 280
 281         /* Load initrd. */
 282         if (machine->initrd_filename) {
 283             initrd_base = high = ROUND_UP(high, 4);
 284             initrd_size = load_image_targphys(machine->initrd_filename,
 285                                               high, ram_size - high);
 286
 287             if (initrd_size < 0) {
 288                 error_report("couldn't load ram disk '%s'",
 289                              machine->initrd_filename);
 290                 exit(1);
 291             }
 292             high = ROUND_UP(high + initrd_size, 4);
 293         }
 294
 295         /* Provide a device-tree.  */
 296         boot_info.fdt = high + (8192 * 2);
 297         boot_info.fdt &= ~8191;
 298
 299         xilinx_load_device_tree(boot_info.fdt, ram_size,
 300                                 initrd_base, initrd_size,
 301                                 kernel_cmdline);
 302     }
 303     env->load_info = &boot_info;
 304 }
 305
 306 static void virtex_machine_init(MachineClass *mc)
 307 {
 308     mc->desc = "Xilinx Virtex ML507 reference design";
 309     mc->init = virtex_init;
 310 }
 311
 312 DEFINE_MACHINE("virtex-ml507", virtex_machine_init)