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 "exec/address-spaces.h" 26 #include "sysemu/sysemu.h" 27 #include "hw/boards.h" 28 #include "hw/block/flash.h" 29 #include "hw/loader.h" 30 #include "hw/misc/zynq-xadc.h" 31 #include "hw/ssi/ssi.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 38 #define NUM_SPI_FLASHES 4 39 #define NUM_QSPI_FLASHES 2 40 #define NUM_QSPI_BUSSES 2 41 42 #define FLASH_SIZE (64 * 1024 * 1024) 43 #define FLASH_SECTOR_SIZE (128 * 1024) 44 45 #define IRQ_OFFSET 32 /* pic interrupts start from index 32 */ 46 47 #define MPCORE_PERIPHBASE 0xF8F00000 48 #define ZYNQ_BOARD_MIDR 0x413FC090 49 50 static const int dma_irqs[8] = { 51 46, 47, 48, 49, 72, 73, 74, 75 52 }; 53 54 #define BOARD_SETUP_ADDR 0x100 55 56 #define SLCR_LOCK_OFFSET 0x004 57 #define SLCR_UNLOCK_OFFSET 0x008 58 #define SLCR_ARM_PLL_OFFSET 0x100 59 60 #define SLCR_XILINX_UNLOCK_KEY 0xdf0d 61 #define SLCR_XILINX_LOCK_KEY 0x767b 62 63 #define ZYNQ_SDHCI_CAPABILITIES 0x69ec0080 /* Datasheet: UG585 (v1.12.1) */ 64 65 #define ARMV7_IMM16(x) (extract32((x), 0, 12) | \ 66 extract32((x), 12, 4) << 16) 67 68 /* Write immediate val to address r0 + addr. r0 should contain base offset 69 * of the SLCR block. Clobbers r1. 70 */ 71 72 #define SLCR_WRITE(addr, val) \ 73 0xe3001000 + ARMV7_IMM16(extract32((val), 0, 16)), /* movw r1 ... */ \ 74 0xe3401000 + ARMV7_IMM16(extract32((val), 16, 16)), /* movt r1 ... */ \ 75 0xe5801000 + (addr) 76 77 static void zynq_write_board_setup(ARMCPU *cpu, 78 const struct arm_boot_info *info) 79 { 80 int n; 81 uint32_t board_setup_blob[] = { 82 0xe3a004f8, /* mov r0, #0xf8000000 */ 83 SLCR_WRITE(SLCR_UNLOCK_OFFSET, SLCR_XILINX_UNLOCK_KEY), 84 SLCR_WRITE(SLCR_ARM_PLL_OFFSET, 0x00014008), 85 SLCR_WRITE(SLCR_LOCK_OFFSET, SLCR_XILINX_LOCK_KEY), 86 0xe12fff1e, /* bx lr */ 87 }; 88 for (n = 0; n < ARRAY_SIZE(board_setup_blob); n++) { 89 board_setup_blob[n] = tswap32(board_setup_blob[n]); 90 } 91 rom_add_blob_fixed("board-setup", board_setup_blob, 92 sizeof(board_setup_blob), BOARD_SETUP_ADDR); 93 } 94 95 static struct arm_boot_info zynq_binfo = {}; 96 97 static void gem_init(NICInfo *nd, uint32_t base, qemu_irq irq) 98 { 99 DeviceState *dev; 100 SysBusDevice *s; 101 102 dev = qdev_create(NULL, TYPE_CADENCE_GEM); 103 if (nd->used) { 104 qemu_check_nic_model(nd, TYPE_CADENCE_GEM); 105 qdev_set_nic_properties(dev, nd); 106 } 107 qdev_init_nofail(dev); 108 s = SYS_BUS_DEVICE(dev); 109 sysbus_mmio_map(s, 0, base); 110 sysbus_connect_irq(s, 0, irq); 111 } 112 113 static inline void zynq_init_spi_flashes(uint32_t base_addr, qemu_irq irq, 114 bool is_qspi) 115 { 116 DeviceState *dev; 117 SysBusDevice *busdev; 118 SSIBus *spi; 119 DeviceState *flash_dev; 120 int i, j; 121 int num_busses = is_qspi ? NUM_QSPI_BUSSES : 1; 122 int num_ss = is_qspi ? NUM_QSPI_FLASHES : NUM_SPI_FLASHES; 123 124 dev = qdev_create(NULL, is_qspi ? "xlnx.ps7-qspi" : "xlnx.ps7-spi"); 125 qdev_prop_set_uint8(dev, "num-txrx-bytes", is_qspi ? 4 : 1); 126 qdev_prop_set_uint8(dev, "num-ss-bits", num_ss); 127 qdev_prop_set_uint8(dev, "num-busses", num_busses); 128 qdev_init_nofail(dev); 129 busdev = SYS_BUS_DEVICE(dev); 130 sysbus_mmio_map(busdev, 0, base_addr); 131 if (is_qspi) { 132 sysbus_mmio_map(busdev, 1, 0xFC000000); 133 } 134 sysbus_connect_irq(busdev, 0, irq); 135 136 for (i = 0; i < num_busses; ++i) { 137 char bus_name[16]; 138 qemu_irq cs_line; 139 140 snprintf(bus_name, 16, "spi%d", i); 141 spi = (SSIBus *)qdev_get_child_bus(dev, bus_name); 142 143 for (j = 0; j < num_ss; ++j) { 144 DriveInfo *dinfo = drive_get_next(IF_MTD); 145 flash_dev = ssi_create_slave_no_init(spi, "n25q128"); 146 if (dinfo) { 147 qdev_prop_set_drive(flash_dev, "drive", 148 blk_by_legacy_dinfo(dinfo), &error_fatal); 149 } 150 qdev_init_nofail(flash_dev); 151 152 cs_line = qdev_get_gpio_in_named(flash_dev, SSI_GPIO_CS, 0); 153 sysbus_connect_irq(busdev, i * num_ss + j + 1, cs_line); 154 } 155 } 156 157 } 158 159 static void zynq_init(MachineState *machine) 160 { 161 ARMCPU *cpu; 162 MemoryRegion *address_space_mem = get_system_memory(); 163 MemoryRegion *ocm_ram = g_new(MemoryRegion, 1); 164 DeviceState *dev; 165 SysBusDevice *busdev; 166 qemu_irq pic[64]; 167 int n; 168 169 /* max 2GB ram */ 170 if (machine->ram_size > 2 * GiB) { 171 error_report("RAM size more than 2 GiB is not supported"); 172 exit(EXIT_FAILURE); 173 } 174 175 cpu = ARM_CPU(object_new(machine->cpu_type)); 176 177 /* By default A9 CPUs have EL3 enabled. This board does not 178 * currently support EL3 so the CPU EL3 property is disabled before 179 * realization. 180 */ 181 if (object_property_find(OBJECT(cpu), "has_el3", NULL)) { 182 object_property_set_bool(OBJECT(cpu), false, "has_el3", &error_fatal); 183 } 184 185 object_property_set_int(OBJECT(cpu), ZYNQ_BOARD_MIDR, "midr", 186 &error_fatal); 187 object_property_set_int(OBJECT(cpu), MPCORE_PERIPHBASE, "reset-cbar", 188 &error_fatal); 189 object_property_set_bool(OBJECT(cpu), true, "realized", &error_fatal); 190 191 /* DDR remapped to address zero. */ 192 memory_region_add_subregion(address_space_mem, 0, machine->ram); 193 194 /* 256K of on-chip memory */ 195 memory_region_init_ram(ocm_ram, NULL, "zynq.ocm_ram", 256 * KiB, 196 &error_fatal); 197 memory_region_add_subregion(address_space_mem, 0xFFFC0000, ocm_ram); 198 199 DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0); 200 201 /* AMD */ 202 pflash_cfi02_register(0xe2000000, "zynq.pflash", FLASH_SIZE, 203 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 204 FLASH_SECTOR_SIZE, 1, 205 1, 0x0066, 0x0022, 0x0000, 0x0000, 0x0555, 0x2aa, 206 0); 207 208 dev = qdev_create(NULL, "xilinx,zynq_slcr"); 209 qdev_init_nofail(dev); 210 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xF8000000); 211 212 dev = qdev_create(NULL, TYPE_A9MPCORE_PRIV); 213 qdev_prop_set_uint32(dev, "num-cpu", 1); 214 qdev_init_nofail(dev); 215 busdev = SYS_BUS_DEVICE(dev); 216 sysbus_mmio_map(busdev, 0, MPCORE_PERIPHBASE); 217 sysbus_connect_irq(busdev, 0, 218 qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ)); 219 220 for (n = 0; n < 64; n++) { 221 pic[n] = qdev_get_gpio_in(dev, n); 222 } 223 224 zynq_init_spi_flashes(0xE0006000, pic[58-IRQ_OFFSET], false); 225 zynq_init_spi_flashes(0xE0007000, pic[81-IRQ_OFFSET], false); 226 zynq_init_spi_flashes(0xE000D000, pic[51-IRQ_OFFSET], true); 227 228 sysbus_create_simple("xlnx,ps7-usb", 0xE0002000, pic[53-IRQ_OFFSET]); 229 sysbus_create_simple("xlnx,ps7-usb", 0xE0003000, pic[76-IRQ_OFFSET]); 230 231 cadence_uart_create(0xE0000000, pic[59 - IRQ_OFFSET], serial_hd(0)); 232 cadence_uart_create(0xE0001000, pic[82 - IRQ_OFFSET], serial_hd(1)); 233 234 sysbus_create_varargs("cadence_ttc", 0xF8001000, 235 pic[42-IRQ_OFFSET], pic[43-IRQ_OFFSET], pic[44-IRQ_OFFSET], NULL); 236 sysbus_create_varargs("cadence_ttc", 0xF8002000, 237 pic[69-IRQ_OFFSET], pic[70-IRQ_OFFSET], pic[71-IRQ_OFFSET], NULL); 238 239 gem_init(&nd_table[0], 0xE000B000, pic[54-IRQ_OFFSET]); 240 gem_init(&nd_table[1], 0xE000C000, pic[77-IRQ_OFFSET]); 241 242 for (n = 0; n < 2; n++) { 243 int hci_irq = n ? 79 : 56; 244 hwaddr hci_addr = n ? 0xE0101000 : 0xE0100000; 245 DriveInfo *di; 246 BlockBackend *blk; 247 DeviceState *carddev; 248 249 /* Compatible with: 250 * - SD Host Controller Specification Version 2.0 Part A2 251 * - SDIO Specification Version 2.0 252 * - MMC Specification Version 3.31 253 */ 254 dev = qdev_create(NULL, TYPE_SYSBUS_SDHCI); 255 qdev_prop_set_uint8(dev, "sd-spec-version", 2); 256 qdev_prop_set_uint64(dev, "capareg", ZYNQ_SDHCI_CAPABILITIES); 257 qdev_init_nofail(dev); 258 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, hci_addr); 259 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[hci_irq - IRQ_OFFSET]); 260 261 di = drive_get_next(IF_SD); 262 blk = di ? blk_by_legacy_dinfo(di) : NULL; 263 carddev = qdev_create(qdev_get_child_bus(dev, "sd-bus"), TYPE_SD_CARD); 264 qdev_prop_set_drive(carddev, "drive", blk, &error_fatal); 265 object_property_set_bool(OBJECT(carddev), true, "realized", 266 &error_fatal); 267 } 268 269 dev = qdev_create(NULL, TYPE_ZYNQ_XADC); 270 qdev_init_nofail(dev); 271 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xF8007100); 272 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[39-IRQ_OFFSET]); 273 274 dev = qdev_create(NULL, "pl330"); 275 qdev_prop_set_uint8(dev, "num_chnls", 8); 276 qdev_prop_set_uint8(dev, "num_periph_req", 4); 277 qdev_prop_set_uint8(dev, "num_events", 16); 278 279 qdev_prop_set_uint8(dev, "data_width", 64); 280 qdev_prop_set_uint8(dev, "wr_cap", 8); 281 qdev_prop_set_uint8(dev, "wr_q_dep", 16); 282 qdev_prop_set_uint8(dev, "rd_cap", 8); 283 qdev_prop_set_uint8(dev, "rd_q_dep", 16); 284 qdev_prop_set_uint16(dev, "data_buffer_dep", 256); 285 286 qdev_init_nofail(dev); 287 busdev = SYS_BUS_DEVICE(dev); 288 sysbus_mmio_map(busdev, 0, 0xF8003000); 289 sysbus_connect_irq(busdev, 0, pic[45-IRQ_OFFSET]); /* abort irq line */ 290 for (n = 0; n < ARRAY_SIZE(dma_irqs); ++n) { /* event irqs */ 291 sysbus_connect_irq(busdev, n + 1, pic[dma_irqs[n] - IRQ_OFFSET]); 292 } 293 294 dev = qdev_create(NULL, "xlnx.ps7-dev-cfg"); 295 qdev_init_nofail(dev); 296 busdev = SYS_BUS_DEVICE(dev); 297 sysbus_connect_irq(busdev, 0, pic[40 - IRQ_OFFSET]); 298 sysbus_mmio_map(busdev, 0, 0xF8007000); 299 300 zynq_binfo.ram_size = machine->ram_size; 301 zynq_binfo.nb_cpus = 1; 302 zynq_binfo.board_id = 0xd32; 303 zynq_binfo.loader_start = 0; 304 zynq_binfo.board_setup_addr = BOARD_SETUP_ADDR; 305 zynq_binfo.write_board_setup = zynq_write_board_setup; 306 307 arm_load_kernel(ARM_CPU(first_cpu), machine, &zynq_binfo); 308 } 309 310 static void zynq_machine_init(MachineClass *mc) 311 { 312 mc->desc = "Xilinx Zynq Platform Baseboard for Cortex-A9"; 313 mc->init = zynq_init; 314 mc->max_cpus = 1; 315 mc->no_sdcard = 1; 316 mc->ignore_memory_transaction_failures = true; 317 mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a9"); 318 mc->default_ram_id = "zynq.ext_ram"; 319 } 320 321 DEFINE_MACHINE("xilinx-zynq-a9", zynq_machine_init) 322