1 /* 2 * Xilinx Zynq Baseboard System emulation. 3 * 4 * Copyright (c) 2010 Xilinx. 5 * Copyright (c) 2012 Peter A.G. Crosthwaite (peter.croshtwaite@petalogix.com) 6 * Copyright (c) 2012 Petalogix Pty Ltd. 7 * Written by Haibing Ma 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License 11 * as published by the Free Software Foundation; either version 12 * 2 of the License, or (at your option) any later version. 13 * 14 * You should have received a copy of the GNU General Public License along 15 * with this program; if not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #include "qemu/osdep.h" 19 #include "qemu/units.h" 20 #include "qapi/error.h" 21 #include "hw/sysbus.h" 22 #include "hw/arm/boot.h" 23 #include "net/net.h" 24 #include "sysemu/sysemu.h" 25 #include "hw/boards.h" 26 #include "hw/block/flash.h" 27 #include "hw/loader.h" 28 #include "hw/adc/zynq-xadc.h" 29 #include "hw/ssi/ssi.h" 30 #include "hw/usb/chipidea.h" 31 #include "qemu/error-report.h" 32 #include "hw/sd/sdhci.h" 33 #include "hw/char/cadence_uart.h" 34 #include "hw/net/cadence_gem.h" 35 #include "hw/cpu/a9mpcore.h" 36 #include "hw/qdev-clock.h" 37 #include "sysemu/reset.h" 38 #include "qom/object.h" 39 #include "exec/tswap.h" 40 #include "target/arm/cpu-qom.h" 41 #include "qapi/visitor.h" 42 43 #define TYPE_ZYNQ_MACHINE MACHINE_TYPE_NAME("xilinx-zynq-a9") 44 OBJECT_DECLARE_SIMPLE_TYPE(ZynqMachineState, ZYNQ_MACHINE) 45 46 /* board base frequency: 33.333333 MHz */ 47 #define PS_CLK_FREQUENCY (100 * 1000 * 1000 / 3) 48 49 #define NUM_SPI_FLASHES 4 50 #define NUM_QSPI_FLASHES 2 51 #define NUM_QSPI_BUSSES 2 52 53 #define FLASH_SIZE (64 * 1024 * 1024) 54 #define FLASH_SECTOR_SIZE (128 * 1024) 55 56 #define IRQ_OFFSET 32 /* pic interrupts start from index 32 */ 57 58 #define MPCORE_PERIPHBASE 0xF8F00000 59 #define ZYNQ_BOARD_MIDR 0x413FC090 60 61 static const int dma_irqs[8] = { 62 46, 47, 48, 49, 72, 73, 74, 75 63 }; 64 65 #define BOARD_SETUP_ADDR 0x100 66 67 #define SLCR_LOCK_OFFSET 0x004 68 #define SLCR_UNLOCK_OFFSET 0x008 69 #define SLCR_ARM_PLL_OFFSET 0x100 70 71 #define SLCR_XILINX_UNLOCK_KEY 0xdf0d 72 #define SLCR_XILINX_LOCK_KEY 0x767b 73 74 #define ZYNQ_SDHCI_CAPABILITIES 0x69ec0080 /* Datasheet: UG585 (v1.12.1) */ 75 76 #define ARMV7_IMM16(x) (extract32((x), 0, 12) | \ 77 extract32((x), 12, 4) << 16) 78 79 /* Write immediate val to address r0 + addr. r0 should contain base offset 80 * of the SLCR block. Clobbers r1. 81 */ 82 83 #define SLCR_WRITE(addr, val) \ 84 0xe3001000 + ARMV7_IMM16(extract32((val), 0, 16)), /* movw r1 ... */ \ 85 0xe3401000 + ARMV7_IMM16(extract32((val), 16, 16)), /* movt r1 ... */ \ 86 0xe5801000 + (addr) 87 88 #define ZYNQ_MAX_CPUS 2 89 90 struct ZynqMachineState { 91 MachineState parent; 92 Clock *ps_clk; 93 ARMCPU *cpu[ZYNQ_MAX_CPUS]; 94 uint8_t boot_mode; 95 }; 96 97 static void zynq_write_board_setup(ARMCPU *cpu, 98 const struct arm_boot_info *info) 99 { 100 int n; 101 uint32_t board_setup_blob[] = { 102 0xe3a004f8, /* mov r0, #0xf8000000 */ 103 SLCR_WRITE(SLCR_UNLOCK_OFFSET, SLCR_XILINX_UNLOCK_KEY), 104 SLCR_WRITE(SLCR_ARM_PLL_OFFSET, 0x00014008), 105 SLCR_WRITE(SLCR_LOCK_OFFSET, SLCR_XILINX_LOCK_KEY), 106 0xe12fff1e, /* bx lr */ 107 }; 108 for (n = 0; n < ARRAY_SIZE(board_setup_blob); n++) { 109 board_setup_blob[n] = tswap32(board_setup_blob[n]); 110 } 111 rom_add_blob_fixed("board-setup", board_setup_blob, 112 sizeof(board_setup_blob), BOARD_SETUP_ADDR); 113 } 114 115 static struct arm_boot_info zynq_binfo = {}; 116 117 static void gem_init(uint32_t base, qemu_irq irq) 118 { 119 DeviceState *dev; 120 SysBusDevice *s; 121 122 dev = qdev_new(TYPE_CADENCE_GEM); 123 qemu_configure_nic_device(dev, true, NULL); 124 object_property_set_int(OBJECT(dev), "phy-addr", 7, &error_abort); 125 s = SYS_BUS_DEVICE(dev); 126 sysbus_realize_and_unref(s, &error_fatal); 127 sysbus_mmio_map(s, 0, base); 128 sysbus_connect_irq(s, 0, irq); 129 } 130 131 static inline int zynq_init_spi_flashes(uint32_t base_addr, qemu_irq irq, 132 bool is_qspi, int unit0) 133 { 134 int unit = unit0; 135 DeviceState *dev; 136 SysBusDevice *busdev; 137 SSIBus *spi; 138 DeviceState *flash_dev; 139 int i, j; 140 int num_busses = is_qspi ? NUM_QSPI_BUSSES : 1; 141 int num_ss = is_qspi ? NUM_QSPI_FLASHES : NUM_SPI_FLASHES; 142 143 dev = qdev_new(is_qspi ? "xlnx.ps7-qspi" : "xlnx.ps7-spi"); 144 qdev_prop_set_uint8(dev, "num-txrx-bytes", is_qspi ? 4 : 1); 145 qdev_prop_set_uint8(dev, "num-ss-bits", num_ss); 146 qdev_prop_set_uint8(dev, "num-busses", num_busses); 147 busdev = SYS_BUS_DEVICE(dev); 148 sysbus_realize_and_unref(busdev, &error_fatal); 149 sysbus_mmio_map(busdev, 0, base_addr); 150 if (is_qspi) { 151 sysbus_mmio_map(busdev, 1, 0xFC000000); 152 } 153 sysbus_connect_irq(busdev, 0, irq); 154 155 for (i = 0; i < num_busses; ++i) { 156 char bus_name[16]; 157 qemu_irq cs_line; 158 159 snprintf(bus_name, 16, "spi%d", i); 160 spi = (SSIBus *)qdev_get_child_bus(dev, bus_name); 161 162 for (j = 0; j < num_ss; ++j) { 163 DriveInfo *dinfo = drive_get(IF_MTD, 0, unit++); 164 flash_dev = qdev_new("n25q128"); 165 if (dinfo) { 166 qdev_prop_set_drive_err(flash_dev, "drive", 167 blk_by_legacy_dinfo(dinfo), 168 &error_fatal); 169 } 170 qdev_prop_set_uint8(flash_dev, "cs", j); 171 qdev_realize_and_unref(flash_dev, BUS(spi), &error_fatal); 172 173 cs_line = qdev_get_gpio_in_named(flash_dev, SSI_GPIO_CS, 0); 174 sysbus_connect_irq(busdev, i * num_ss + j + 1, cs_line); 175 } 176 } 177 178 return unit; 179 } 180 181 static void zynq_set_boot_mode(Object *obj, const char *str, 182 Error **errp) 183 { 184 ZynqMachineState *m = ZYNQ_MACHINE(obj); 185 uint8_t mode = 0; 186 187 if (!strncasecmp(str, "qspi", 4)) { 188 mode = 1; 189 } else if (!strncasecmp(str, "sd", 2)) { 190 mode = 5; 191 } else if (!strncasecmp(str, "nor", 3)) { 192 mode = 2; 193 } else if (!strncasecmp(str, "jtag", 4)) { 194 mode = 0; 195 } else { 196 error_setg(errp, "%s boot mode not supported", str); 197 return; 198 } 199 m->boot_mode = mode; 200 } 201 202 static void zynq_init(MachineState *machine) 203 { 204 ZynqMachineState *zynq_machine = ZYNQ_MACHINE(machine); 205 MemoryRegion *address_space_mem = get_system_memory(); 206 MemoryRegion *ocm_ram = g_new(MemoryRegion, 1); 207 DeviceState *dev, *slcr; 208 SysBusDevice *busdev; 209 qemu_irq pic[64]; 210 int n; 211 unsigned int smp_cpus = machine->smp.cpus; 212 213 /* max 2GB ram */ 214 if (machine->ram_size > 2 * GiB) { 215 error_report("RAM size more than 2 GiB is not supported"); 216 exit(EXIT_FAILURE); 217 } 218 219 for (n = 0; n < smp_cpus; n++) { 220 Object *cpuobj = object_new(machine->cpu_type); 221 222 /* 223 * By default A9 CPUs have EL3 enabled. This board does not currently 224 * support EL3 so the CPU EL3 property is disabled before realization. 225 */ 226 if (object_property_find(cpuobj, "has_el3")) { 227 object_property_set_bool(cpuobj, "has_el3", false, &error_fatal); 228 } 229 230 object_property_set_int(cpuobj, "midr", ZYNQ_BOARD_MIDR, 231 &error_fatal); 232 object_property_set_int(cpuobj, "reset-cbar", MPCORE_PERIPHBASE, 233 &error_fatal); 234 235 qdev_realize(DEVICE(cpuobj), NULL, &error_fatal); 236 237 zynq_machine->cpu[n] = ARM_CPU(cpuobj); 238 } 239 240 /* DDR remapped to address zero. */ 241 memory_region_add_subregion(address_space_mem, 0, machine->ram); 242 243 /* 256K of on-chip memory */ 244 memory_region_init_ram(ocm_ram, NULL, "zynq.ocm_ram", 256 * KiB, 245 &error_fatal); 246 memory_region_add_subregion(address_space_mem, 0xFFFC0000, ocm_ram); 247 248 DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0); 249 250 /* AMD */ 251 pflash_cfi02_register(0xe2000000, "zynq.pflash", FLASH_SIZE, 252 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 253 FLASH_SECTOR_SIZE, 1, 254 1, 0x0066, 0x0022, 0x0000, 0x0000, 0x0555, 0x2aa, 255 0); 256 257 /* Create the main clock source, and feed slcr with it */ 258 zynq_machine->ps_clk = CLOCK(object_new(TYPE_CLOCK)); 259 object_property_add_child(OBJECT(zynq_machine), "ps_clk", 260 OBJECT(zynq_machine->ps_clk)); 261 object_unref(OBJECT(zynq_machine->ps_clk)); 262 clock_set_hz(zynq_machine->ps_clk, PS_CLK_FREQUENCY); 263 264 /* Create slcr, keep a pointer to connect clocks */ 265 slcr = qdev_new("xilinx-zynq_slcr"); 266 qdev_connect_clock_in(slcr, "ps_clk", zynq_machine->ps_clk); 267 qdev_prop_set_uint8(slcr, "boot-mode", zynq_machine->boot_mode); 268 sysbus_realize_and_unref(SYS_BUS_DEVICE(slcr), &error_fatal); 269 sysbus_mmio_map(SYS_BUS_DEVICE(slcr), 0, 0xF8000000); 270 271 dev = qdev_new(TYPE_A9MPCORE_PRIV); 272 qdev_prop_set_uint32(dev, "num-cpu", smp_cpus); 273 busdev = SYS_BUS_DEVICE(dev); 274 sysbus_realize_and_unref(busdev, &error_fatal); 275 sysbus_mmio_map(busdev, 0, MPCORE_PERIPHBASE); 276 zynq_binfo.gic_cpu_if_addr = MPCORE_PERIPHBASE + 0x100; 277 sysbus_create_varargs("l2x0", MPCORE_PERIPHBASE + 0x2000, NULL); 278 for (n = 0; n < smp_cpus; n++) { 279 /* See "hw/intc/arm_gic.h" for the IRQ line association */ 280 DeviceState *cpudev = DEVICE(zynq_machine->cpu[n]); 281 sysbus_connect_irq(busdev, n, 282 qdev_get_gpio_in(cpudev, ARM_CPU_IRQ)); 283 sysbus_connect_irq(busdev, smp_cpus + n, 284 qdev_get_gpio_in(cpudev, ARM_CPU_FIQ)); 285 } 286 287 for (n = 0; n < 64; n++) { 288 pic[n] = qdev_get_gpio_in(dev, n); 289 } 290 291 n = zynq_init_spi_flashes(0xE0006000, pic[58 - IRQ_OFFSET], false, 0); 292 n = zynq_init_spi_flashes(0xE0007000, pic[81 - IRQ_OFFSET], false, n); 293 n = zynq_init_spi_flashes(0xE000D000, pic[51 - IRQ_OFFSET], true, n); 294 295 sysbus_create_simple(TYPE_CHIPIDEA, 0xE0002000, pic[53 - IRQ_OFFSET]); 296 sysbus_create_simple(TYPE_CHIPIDEA, 0xE0003000, pic[76 - IRQ_OFFSET]); 297 298 dev = qdev_new(TYPE_CADENCE_UART); 299 busdev = SYS_BUS_DEVICE(dev); 300 qdev_prop_set_chr(dev, "chardev", serial_hd(0)); 301 qdev_connect_clock_in(dev, "refclk", 302 qdev_get_clock_out(slcr, "uart0_ref_clk")); 303 sysbus_realize_and_unref(busdev, &error_fatal); 304 sysbus_mmio_map(busdev, 0, 0xE0000000); 305 sysbus_connect_irq(busdev, 0, pic[59 - IRQ_OFFSET]); 306 dev = qdev_new(TYPE_CADENCE_UART); 307 busdev = SYS_BUS_DEVICE(dev); 308 qdev_prop_set_chr(dev, "chardev", serial_hd(1)); 309 qdev_connect_clock_in(dev, "refclk", 310 qdev_get_clock_out(slcr, "uart1_ref_clk")); 311 sysbus_realize_and_unref(busdev, &error_fatal); 312 sysbus_mmio_map(busdev, 0, 0xE0001000); 313 sysbus_connect_irq(busdev, 0, pic[82 - IRQ_OFFSET]); 314 315 sysbus_create_varargs("cadence_ttc", 0xF8001000, 316 pic[42-IRQ_OFFSET], pic[43-IRQ_OFFSET], pic[44-IRQ_OFFSET], NULL); 317 sysbus_create_varargs("cadence_ttc", 0xF8002000, 318 pic[69-IRQ_OFFSET], pic[70-IRQ_OFFSET], pic[71-IRQ_OFFSET], NULL); 319 320 gem_init(0xE000B000, pic[54 - IRQ_OFFSET]); 321 gem_init(0xE000C000, pic[77 - IRQ_OFFSET]); 322 323 for (n = 0; n < 2; n++) { 324 int hci_irq = n ? 79 : 56; 325 hwaddr hci_addr = n ? 0xE0101000 : 0xE0100000; 326 DriveInfo *di; 327 BlockBackend *blk; 328 DeviceState *carddev; 329 330 /* Compatible with: 331 * - SD Host Controller Specification Version 2.0 Part A2 332 * - SDIO Specification Version 2.0 333 * - MMC Specification Version 3.31 334 */ 335 dev = qdev_new(TYPE_SYSBUS_SDHCI); 336 qdev_prop_set_uint8(dev, "sd-spec-version", 2); 337 qdev_prop_set_uint64(dev, "capareg", ZYNQ_SDHCI_CAPABILITIES); 338 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 339 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, hci_addr); 340 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[hci_irq - IRQ_OFFSET]); 341 342 di = drive_get(IF_SD, 0, n); 343 blk = di ? blk_by_legacy_dinfo(di) : NULL; 344 carddev = qdev_new(TYPE_SD_CARD); 345 qdev_prop_set_drive_err(carddev, "drive", blk, &error_fatal); 346 qdev_realize_and_unref(carddev, qdev_get_child_bus(dev, "sd-bus"), 347 &error_fatal); 348 } 349 350 dev = qdev_new(TYPE_ZYNQ_XADC); 351 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 352 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xF8007100); 353 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[39-IRQ_OFFSET]); 354 355 dev = qdev_new("pl330"); 356 object_property_set_link(OBJECT(dev), "memory", 357 OBJECT(address_space_mem), 358 &error_fatal); 359 qdev_prop_set_uint8(dev, "num_chnls", 8); 360 qdev_prop_set_uint8(dev, "num_periph_req", 4); 361 qdev_prop_set_uint8(dev, "num_events", 16); 362 363 qdev_prop_set_uint8(dev, "data_width", 64); 364 qdev_prop_set_uint8(dev, "wr_cap", 8); 365 qdev_prop_set_uint8(dev, "wr_q_dep", 16); 366 qdev_prop_set_uint8(dev, "rd_cap", 8); 367 qdev_prop_set_uint8(dev, "rd_q_dep", 16); 368 qdev_prop_set_uint16(dev, "data_buffer_dep", 256); 369 370 busdev = SYS_BUS_DEVICE(dev); 371 sysbus_realize_and_unref(busdev, &error_fatal); 372 sysbus_mmio_map(busdev, 0, 0xF8003000); 373 sysbus_connect_irq(busdev, 0, pic[45-IRQ_OFFSET]); /* abort irq line */ 374 for (n = 0; n < ARRAY_SIZE(dma_irqs); ++n) { /* event irqs */ 375 sysbus_connect_irq(busdev, n + 1, pic[dma_irqs[n] - IRQ_OFFSET]); 376 } 377 378 dev = qdev_new("xlnx.ps7-dev-cfg"); 379 busdev = SYS_BUS_DEVICE(dev); 380 sysbus_realize_and_unref(busdev, &error_fatal); 381 sysbus_connect_irq(busdev, 0, pic[40 - IRQ_OFFSET]); 382 sysbus_mmio_map(busdev, 0, 0xF8007000); 383 384 zynq_binfo.ram_size = machine->ram_size; 385 zynq_binfo.board_id = 0xd32; 386 zynq_binfo.loader_start = 0; 387 zynq_binfo.board_setup_addr = BOARD_SETUP_ADDR; 388 zynq_binfo.write_board_setup = zynq_write_board_setup; 389 390 arm_load_kernel(zynq_machine->cpu[0], machine, &zynq_binfo); 391 } 392 393 static void zynq_machine_class_init(ObjectClass *oc, void *data) 394 { 395 static const char * const valid_cpu_types[] = { 396 ARM_CPU_TYPE_NAME("cortex-a9"), 397 NULL 398 }; 399 MachineClass *mc = MACHINE_CLASS(oc); 400 ObjectProperty *prop; 401 mc->desc = "Xilinx Zynq Platform Baseboard for Cortex-A9"; 402 mc->init = zynq_init; 403 mc->max_cpus = ZYNQ_MAX_CPUS; 404 mc->no_sdcard = 1; 405 mc->ignore_memory_transaction_failures = true; 406 mc->valid_cpu_types = valid_cpu_types; 407 mc->default_ram_id = "zynq.ext_ram"; 408 prop = object_class_property_add_str(oc, "boot-mode", NULL, 409 zynq_set_boot_mode); 410 object_class_property_set_description(oc, "boot-mode", 411 "Supported boot modes:" 412 " jtag qspi sd nor"); 413 object_property_set_default_str(prop, "qspi"); 414 } 415 416 static const TypeInfo zynq_machine_type = { 417 .name = TYPE_ZYNQ_MACHINE, 418 .parent = TYPE_MACHINE, 419 .class_init = zynq_machine_class_init, 420 .instance_size = sizeof(ZynqMachineState), 421 }; 422 423 static void zynq_machine_register_types(void) 424 { 425 type_register_static(&zynq_machine_type); 426 } 427 428 type_init(zynq_machine_register_types) 429