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/units.h" 27 #include "cpu.h" 28 #include "hw/sysbus.h" 29 #include "hw/hw.h" 30 #include "hw/char/serial.h" 31 #include "hw/block/flash.h" 32 #include "sysemu/sysemu.h" 33 #include "sysemu/qtest.h" 34 #include "hw/devices.h" 35 #include "hw/boards.h" 36 #include "sysemu/device_tree.h" 37 #include "hw/loader.h" 38 #include "elf.h" 39 #include "qemu/error-report.h" 40 #include "qemu/log.h" 41 #include "qemu/option.h" 42 #include "exec/address-spaces.h" 43 44 #include "hw/ppc/ppc.h" 45 #include "hw/ppc/ppc4xx.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(ram_addr_t *ram_size, 92 int do_init, 93 const char *cpu_type, 94 uint32_t sysclk) 95 { 96 PowerPCCPU *cpu; 97 CPUPPCState *env; 98 qemu_irq *irqs; 99 100 cpu = POWERPC_CPU(cpu_create(cpu_type)); 101 env = &cpu->env; 102 103 ppc_booke_timers_init(cpu, sysclk, 0/* no flags */); 104 105 ppc_dcr_init(env, NULL, NULL); 106 107 /* interrupt controller */ 108 irqs = g_new0(qemu_irq, PPCUIC_OUTPUT_NB); 109 irqs[PPCUIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT]; 110 irqs[PPCUIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT]; 111 ppcuic_init(env, irqs, 0x0C0, 0, 1); 112 return cpu; 113 } 114 115 static void main_cpu_reset(void *opaque) 116 { 117 PowerPCCPU *cpu = opaque; 118 CPUPPCState *env = &cpu->env; 119 struct boot_info *bi = env->load_info; 120 121 cpu_reset(CPU(cpu)); 122 /* Linux Kernel Parameters (passing device tree): 123 * r3: pointer to the fdt 124 * r4: 0 125 * r5: 0 126 * r6: epapr magic 127 * r7: size of IMA in bytes 128 * r8: 0 129 * r9: 0 130 */ 131 env->gpr[1] = (16 * MiB) - 8; 132 /* Provide a device-tree. */ 133 env->gpr[3] = bi->fdt; 134 env->nip = bi->bootstrap_pc; 135 136 /* Create a mapping for the kernel. */ 137 mmubooke_create_initial_mapping(env, 0, 0); 138 env->gpr[6] = tswap32(EPAPR_MAGIC); 139 env->gpr[7] = bi->ima_size; 140 } 141 142 #define BINARY_DEVICE_TREE_FILE "virtex-ml507.dtb" 143 static int xilinx_load_device_tree(hwaddr addr, 144 uint32_t ramsize, 145 hwaddr initrd_base, 146 hwaddr initrd_size, 147 const char *kernel_cmdline) 148 { 149 char *path; 150 int fdt_size; 151 void *fdt = NULL; 152 int r; 153 const char *dtb_filename; 154 155 dtb_filename = qemu_opt_get(qemu_get_machine_opts(), "dtb"); 156 if (dtb_filename) { 157 fdt = load_device_tree(dtb_filename, &fdt_size); 158 if (!fdt) { 159 error_report("Error while loading device tree file '%s'", 160 dtb_filename); 161 } 162 } else { 163 /* Try the local "ppc.dtb" override. */ 164 fdt = load_device_tree("ppc.dtb", &fdt_size); 165 if (!fdt) { 166 path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE); 167 if (path) { 168 fdt = load_device_tree(path, &fdt_size); 169 g_free(path); 170 } 171 } 172 } 173 if (!fdt) { 174 return 0; 175 } 176 177 r = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start", 178 initrd_base); 179 if (r < 0) { 180 error_report("couldn't set /chosen/linux,initrd-start"); 181 } 182 183 r = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end", 184 (initrd_base + initrd_size)); 185 if (r < 0) { 186 error_report("couldn't set /chosen/linux,initrd-end"); 187 } 188 189 r = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline); 190 if (r < 0) 191 fprintf(stderr, "couldn't set /chosen/bootargs\n"); 192 cpu_physical_memory_write(addr, fdt, fdt_size); 193 return fdt_size; 194 } 195 196 static void virtex_init(MachineState *machine) 197 { 198 ram_addr_t ram_size = machine->ram_size; 199 const char *kernel_filename = machine->kernel_filename; 200 const char *kernel_cmdline = machine->kernel_cmdline; 201 hwaddr initrd_base = 0; 202 int initrd_size = 0; 203 MemoryRegion *address_space_mem = get_system_memory(); 204 DeviceState *dev; 205 PowerPCCPU *cpu; 206 CPUPPCState *env; 207 hwaddr ram_base = 0; 208 DriveInfo *dinfo; 209 MemoryRegion *phys_ram = g_new(MemoryRegion, 1); 210 qemu_irq irq[32], *cpu_irq; 211 int kernel_size; 212 int i; 213 214 /* init CPUs */ 215 cpu = ppc440_init_xilinx(&ram_size, 1, machine->cpu_type, 400000000); 216 env = &cpu->env; 217 218 if (env->mmu_model != POWERPC_MMU_BOOKE) { 219 error_report("MMU model %i not supported by this machine", 220 env->mmu_model); 221 exit(1); 222 } 223 224 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 * KiB, 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_hd(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, NULL, 262 &entry, &low, &high, 1, PPC_ELF_MACHINE, 263 0, 0); 264 boot_info.bootstrap_pc = entry & 0x00ffffff; 265 266 if (kernel_size < 0) { 267 boot_offset = 0x1200000; 268 /* If we failed loading ELF's try a raw image. */ 269 kernel_size = load_image_targphys(kernel_filename, 270 boot_offset, 271 ram_size); 272 boot_info.bootstrap_pc = boot_offset; 273 high = boot_info.bootstrap_pc + kernel_size + 8192; 274 } 275 276 boot_info.ima_size = kernel_size; 277 278 /* Load initrd. */ 279 if (machine->initrd_filename) { 280 initrd_base = high = ROUND_UP(high, 4); 281 initrd_size = load_image_targphys(machine->initrd_filename, 282 high, ram_size - high); 283 284 if (initrd_size < 0) { 285 error_report("couldn't load ram disk '%s'", 286 machine->initrd_filename); 287 exit(1); 288 } 289 high = ROUND_UP(high + initrd_size, 4); 290 } 291 292 /* Provide a device-tree. */ 293 boot_info.fdt = high + (8192 * 2); 294 boot_info.fdt &= ~8191; 295 296 xilinx_load_device_tree(boot_info.fdt, ram_size, 297 initrd_base, initrd_size, 298 kernel_cmdline); 299 } 300 env->load_info = &boot_info; 301 } 302 303 static void virtex_machine_init(MachineClass *mc) 304 { 305 mc->desc = "Xilinx Virtex ML507 reference design"; 306 mc->init = virtex_init; 307 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("440-xilinx"); 308 } 309 310 DEFINE_MACHINE("virtex-ml507", virtex_machine_init) 311