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