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 "qemu/datadir.h" 27 #include "qemu/units.h" 28 #include "cpu.h" 29 #include "hw/sysbus.h" 30 #include "hw/char/serial.h" 31 #include "hw/block/flash.h" 32 #include "sysemu/sysemu.h" 33 #include "sysemu/reset.h" 34 #include "hw/boards.h" 35 #include "sysemu/device_tree.h" 36 #include "hw/loader.h" 37 #include "elf.h" 38 #include "qapi/error.h" 39 #include "qemu/error-report.h" 40 #include "qemu/option.h" 41 42 #include "hw/intc/ppc-uic.h" 43 #include "hw/ppc/ppc.h" 44 #include "hw/ppc/ppc4xx.h" 45 #include "hw/qdev-properties.h" 46 #include "ppc405.h" 47 48 #define EPAPR_MAGIC (0x45504150) 49 #define FLASH_SIZE (16 * MiB) 50 51 #define INTC_BASEADDR 0x81800000 52 #define UART16550_BASEADDR 0x83e01003 53 #define TIMER_BASEADDR 0x83c00000 54 #define PFLASH_BASEADDR 0xfc000000 55 56 #define TIMER_IRQ 3 57 #define UART16550_IRQ 9 58 59 static struct boot_info 60 { 61 uint32_t bootstrap_pc; 62 uint32_t cmdline; 63 uint32_t fdt; 64 uint32_t ima_size; 65 void *vfdt; 66 } boot_info; 67 68 /* Create reset TLB entries for BookE, spanning the 32bit addr space. */ 69 static void mmubooke_create_initial_mapping(CPUPPCState *env, 70 target_ulong va, 71 hwaddr pa) 72 { 73 ppcemb_tlb_t *tlb = &env->tlb.tlbe[0]; 74 75 tlb->attr = 0; 76 tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); 77 tlb->size = 1U << 31; /* up to 0x80000000 */ 78 tlb->EPN = va & TARGET_PAGE_MASK; 79 tlb->RPN = pa & TARGET_PAGE_MASK; 80 tlb->PID = 0; 81 82 tlb = &env->tlb.tlbe[1]; 83 tlb->attr = 0; 84 tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); 85 tlb->size = 1U << 31; /* up to 0xffffffff */ 86 tlb->EPN = 0x80000000 & TARGET_PAGE_MASK; 87 tlb->RPN = 0x80000000 & TARGET_PAGE_MASK; 88 tlb->PID = 0; 89 } 90 91 static PowerPCCPU *ppc440_init_xilinx(const char *cpu_type, uint32_t sysclk) 92 { 93 PowerPCCPU *cpu; 94 CPUPPCState *env; 95 DeviceState *uicdev; 96 SysBusDevice *uicsbd; 97 98 cpu = POWERPC_CPU(cpu_create(cpu_type)); 99 env = &cpu->env; 100 101 ppc_booke_timers_init(cpu, sysclk, 0/* no flags */); 102 103 ppc_dcr_init(env, NULL, NULL); 104 105 /* interrupt controller */ 106 uicdev = qdev_new(TYPE_PPC_UIC); 107 uicsbd = SYS_BUS_DEVICE(uicdev); 108 109 object_property_set_link(OBJECT(uicdev), "cpu", OBJECT(cpu), 110 &error_fatal); 111 sysbus_realize_and_unref(uicsbd, &error_fatal); 112 113 sysbus_connect_irq(uicsbd, PPCUIC_OUTPUT_INT, 114 qdev_get_gpio_in(DEVICE(cpu), PPC40x_INPUT_INT)); 115 sysbus_connect_irq(uicsbd, PPCUIC_OUTPUT_CINT, 116 qdev_get_gpio_in(DEVICE(cpu), PPC40x_INPUT_CINT)); 117 118 /* This board doesn't wire anything up to the inputs of the UIC. */ 119 return cpu; 120 } 121 122 static void main_cpu_reset(void *opaque) 123 { 124 PowerPCCPU *cpu = opaque; 125 CPUPPCState *env = &cpu->env; 126 struct boot_info *bi = env->load_info; 127 128 cpu_reset(CPU(cpu)); 129 /* Linux Kernel Parameters (passing device tree): 130 * r3: pointer to the fdt 131 * r4: 0 132 * r5: 0 133 * r6: epapr magic 134 * r7: size of IMA in bytes 135 * r8: 0 136 * r9: 0 137 */ 138 env->gpr[1] = (16 * MiB) - 8; 139 /* Provide a device-tree. */ 140 env->gpr[3] = bi->fdt; 141 env->nip = bi->bootstrap_pc; 142 143 /* Create a mapping for the kernel. */ 144 mmubooke_create_initial_mapping(env, 0, 0); 145 env->gpr[6] = tswap32(EPAPR_MAGIC); 146 env->gpr[7] = bi->ima_size; 147 } 148 149 #define BINARY_DEVICE_TREE_FILE "virtex-ml507.dtb" 150 static int xilinx_load_device_tree(hwaddr addr, 151 uint32_t ramsize, 152 hwaddr initrd_base, 153 hwaddr initrd_size, 154 const char *kernel_cmdline) 155 { 156 char *path; 157 int fdt_size; 158 void *fdt = NULL; 159 int r; 160 const char *dtb_filename; 161 162 dtb_filename = current_machine->dtb; 163 if (dtb_filename) { 164 fdt = load_device_tree(dtb_filename, &fdt_size); 165 if (!fdt) { 166 error_report("Error while loading device tree file '%s'", 167 dtb_filename); 168 } 169 } else { 170 /* Try the local "ppc.dtb" override. */ 171 fdt = load_device_tree("ppc.dtb", &fdt_size); 172 if (!fdt) { 173 path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE); 174 if (path) { 175 fdt = load_device_tree(path, &fdt_size); 176 g_free(path); 177 } 178 } 179 } 180 if (!fdt) { 181 return 0; 182 } 183 184 r = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start", 185 initrd_base); 186 if (r < 0) { 187 error_report("couldn't set /chosen/linux,initrd-start"); 188 } 189 190 r = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end", 191 (initrd_base + initrd_size)); 192 if (r < 0) { 193 error_report("couldn't set /chosen/linux,initrd-end"); 194 } 195 196 r = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline); 197 if (r < 0) 198 fprintf(stderr, "couldn't set /chosen/bootargs\n"); 199 cpu_physical_memory_write(addr, fdt, fdt_size); 200 g_free(fdt); 201 return fdt_size; 202 } 203 204 static void virtex_init(MachineState *machine) 205 { 206 const char *kernel_filename = machine->kernel_filename; 207 const char *kernel_cmdline = machine->kernel_cmdline; 208 hwaddr initrd_base = 0; 209 int initrd_size = 0; 210 MemoryRegion *address_space_mem = get_system_memory(); 211 DeviceState *dev; 212 PowerPCCPU *cpu; 213 CPUPPCState *env; 214 hwaddr ram_base = 0; 215 DriveInfo *dinfo; 216 qemu_irq irq[32], cpu_irq; 217 int kernel_size; 218 int i; 219 220 /* init CPUs */ 221 cpu = ppc440_init_xilinx(machine->cpu_type, 400000000); 222 env = &cpu->env; 223 224 if (env->mmu_model != POWERPC_MMU_BOOKE) { 225 error_report("MMU model %i not supported by this machine", 226 env->mmu_model); 227 exit(1); 228 } 229 230 qemu_register_reset(main_cpu_reset, cpu); 231 232 memory_region_add_subregion(address_space_mem, ram_base, machine->ram); 233 234 dinfo = drive_get(IF_PFLASH, 0, 0); 235 pflash_cfi01_register(PFLASH_BASEADDR, "virtex.flash", FLASH_SIZE, 236 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 237 64 * KiB, 1, 0x89, 0x18, 0x0000, 0x0, 1); 238 239 cpu_irq = qdev_get_gpio_in(DEVICE(cpu), PPC40x_INPUT_INT); 240 dev = qdev_new("xlnx.xps-intc"); 241 qdev_prop_set_uint32(dev, "kind-of-intr", 0); 242 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 243 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, INTC_BASEADDR); 244 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, cpu_irq); 245 for (i = 0; i < 32; i++) { 246 irq[i] = qdev_get_gpio_in(dev, i); 247 } 248 249 serial_mm_init(address_space_mem, UART16550_BASEADDR, 2, irq[UART16550_IRQ], 250 115200, serial_hd(0), DEVICE_LITTLE_ENDIAN); 251 252 /* 2 timers at irq 2 @ 62 Mhz. */ 253 dev = qdev_new("xlnx.xps-timer"); 254 qdev_prop_set_uint32(dev, "one-timer-only", 0); 255 qdev_prop_set_uint32(dev, "clock-frequency", 62 * 1000000); 256 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 257 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, TIMER_BASEADDR); 258 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[TIMER_IRQ]); 259 260 if (kernel_filename) { 261 uint64_t entry, high; 262 hwaddr boot_offset; 263 264 /* Boots a kernel elf binary. */ 265 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, 266 &entry, NULL, &high, NULL, 1, PPC_ELF_MACHINE, 267 0, 0); 268 boot_info.bootstrap_pc = entry & 0x00ffffff; 269 270 if (kernel_size < 0) { 271 boot_offset = 0x1200000; 272 /* If we failed loading ELF's try a raw image. */ 273 kernel_size = load_image_targphys(kernel_filename, 274 boot_offset, 275 machine->ram_size); 276 boot_info.bootstrap_pc = boot_offset; 277 high = boot_info.bootstrap_pc + kernel_size + 8192; 278 } 279 280 boot_info.ima_size = kernel_size; 281 282 /* Load initrd. */ 283 if (machine->initrd_filename) { 284 initrd_base = high = ROUND_UP(high, 4); 285 initrd_size = load_image_targphys(machine->initrd_filename, 286 high, machine->ram_size - high); 287 288 if (initrd_size < 0) { 289 error_report("couldn't load ram disk '%s'", 290 machine->initrd_filename); 291 exit(1); 292 } 293 high = ROUND_UP(high + initrd_size, 4); 294 } 295 296 /* Provide a device-tree. */ 297 boot_info.fdt = high + (8192 * 2); 298 boot_info.fdt &= ~8191; 299 300 xilinx_load_device_tree(boot_info.fdt, machine->ram_size, 301 initrd_base, initrd_size, 302 kernel_cmdline); 303 } 304 env->load_info = &boot_info; 305 } 306 307 static void virtex_machine_init(MachineClass *mc) 308 { 309 mc->desc = "Xilinx Virtex ML507 reference design"; 310 mc->init = virtex_init; 311 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("440-xilinx"); 312 mc->default_ram_id = "ram"; 313 } 314 315 DEFINE_MACHINE("virtex-ml507", virtex_machine_init) 316