hw/arm/xilinx_zynq.c

   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 "qapi/error.h"
  20 #include "qemu-common.h"
  21 #include "cpu.h"
  22 #include "hw/sysbus.h"
  23 #include "hw/arm/arm.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 "sysemu/block-backend.h"
  30 #include "hw/loader.h"
  31 #include "hw/misc/zynq-xadc.h"
  32 #include "hw/ssi/ssi.h"
  33 #include "qemu/error-report.h"
  34 #include "hw/sd/sd.h"
  35 #include "hw/char/cadence_uart.h"
  36
  37 #define NUM_SPI_FLASHES 4
  38 #define NUM_QSPI_FLASHES 2
  39 #define NUM_QSPI_BUSSES 2
  40
  41 #define FLASH_SIZE (64 * 1024 * 1024)
  42 #define FLASH_SECTOR_SIZE (128 * 1024)
  43
  44 #define IRQ_OFFSET 32 /* pic interrupts start from index 32 */
  45
  46 #define MPCORE_PERIPHBASE 0xF8F00000
  47 #define ZYNQ_BOARD_MIDR 0x413FC090
  48
  49 static const int dma_irqs[8] = {
  50     46, 47, 48, 49, 72, 73, 74, 75
  51 };
  52
  53 #define BOARD_SETUP_ADDR        0x100
  54
  55 #define SLCR_LOCK_OFFSET        0x004
  56 #define SLCR_UNLOCK_OFFSET      0x008
  57 #define SLCR_ARM_PLL_OFFSET     0x100
  58
  59 #define SLCR_XILINX_UNLOCK_KEY  0xdf0d
  60 #define SLCR_XILINX_LOCK_KEY    0x767b
  61
  62 #define ARMV7_IMM16(x) (extract32((x),  0, 12) | \
  63                         extract32((x), 12,  4) << 16)
  64
  65 /* Write immediate val to address r0 + addr. r0 should contain base offset
  66  * of the SLCR block. Clobbers r1.
  67  */
  68
  69 #define SLCR_WRITE(addr, val) \
  70     0xe3001000 + ARMV7_IMM16(extract32((val),  0, 16)), /* movw r1 ... */ \
  71     0xe3401000 + ARMV7_IMM16(extract32((val), 16, 16)), /* movt r1 ... */ \
  72     0xe5801000 + (addr)
  73
  74 static void zynq_write_board_setup(ARMCPU *cpu,
  75                                    const struct arm_boot_info *info)
  76 {
  77     int n;
  78     uint32_t board_setup_blob[] = {
  79         0xe3a004f8, /* mov r0, #0xf8000000 */
  80         SLCR_WRITE(SLCR_UNLOCK_OFFSET, SLCR_XILINX_UNLOCK_KEY),
  81         SLCR_WRITE(SLCR_ARM_PLL_OFFSET, 0x00014008),
  82         SLCR_WRITE(SLCR_LOCK_OFFSET, SLCR_XILINX_LOCK_KEY),
  83         0xe12fff1e, /* bx lr */
  84     };
  85     for (n = 0; n < ARRAY_SIZE(board_setup_blob); n++) {
  86         board_setup_blob[n] = tswap32(board_setup_blob[n]);
  87     }
  88     rom_add_blob_fixed("board-setup", board_setup_blob,
  89                        sizeof(board_setup_blob), BOARD_SETUP_ADDR);
  90 }
  91
  92 static struct arm_boot_info zynq_binfo = {};
  93
  94 static void gem_init(NICInfo *nd, uint32_t base, qemu_irq irq)
  95 {
  96     DeviceState *dev;
  97     SysBusDevice *s;
  98
  99     dev = qdev_create(NULL, "cadence_gem");
 100     if (nd->used) {
 101         qemu_check_nic_model(nd, "cadence_gem");
 102         qdev_set_nic_properties(dev, nd);
 103     }
 104     qdev_init_nofail(dev);
 105     s = SYS_BUS_DEVICE(dev);
 106     sysbus_mmio_map(s, 0, base);
 107     sysbus_connect_irq(s, 0, irq);
 108 }
 109
 110 static inline void zynq_init_spi_flashes(uint32_t base_addr, qemu_irq irq,
 111                                          bool is_qspi)
 112 {
 113     DeviceState *dev;
 114     SysBusDevice *busdev;
 115     SSIBus *spi;
 116     DeviceState *flash_dev;
 117     int i, j;
 118     int num_busses =  is_qspi ? NUM_QSPI_BUSSES : 1;
 119     int num_ss = is_qspi ? NUM_QSPI_FLASHES : NUM_SPI_FLASHES;
 120
 121     dev = qdev_create(NULL, is_qspi ? "xlnx.ps7-qspi" : "xlnx.ps7-spi");
 122     qdev_prop_set_uint8(dev, "num-txrx-bytes", is_qspi ? 4 : 1);
 123     qdev_prop_set_uint8(dev, "num-ss-bits", num_ss);
 124     qdev_prop_set_uint8(dev, "num-busses", num_busses);
 125     qdev_init_nofail(dev);
 126     busdev = SYS_BUS_DEVICE(dev);
 127     sysbus_mmio_map(busdev, 0, base_addr);
 128     if (is_qspi) {
 129         sysbus_mmio_map(busdev, 1, 0xFC000000);
 130     }
 131     sysbus_connect_irq(busdev, 0, irq);
 132
 133     for (i = 0; i < num_busses; ++i) {
 134         char bus_name[16];
 135         qemu_irq cs_line;
 136
 137         snprintf(bus_name, 16, "spi%d", i);
 138         spi = (SSIBus *)qdev_get_child_bus(dev, bus_name);
 139
 140         for (j = 0; j < num_ss; ++j) {
 141             DriveInfo *dinfo = drive_get_next(IF_MTD);
 142             flash_dev = ssi_create_slave_no_init(spi, "n25q128");
 143             if (dinfo) {
 144                 qdev_prop_set_drive(flash_dev, "drive",
 145                                     blk_by_legacy_dinfo(dinfo), &error_fatal);
 146             }
 147             qdev_init_nofail(flash_dev);
 148
 149             cs_line = qdev_get_gpio_in_named(flash_dev, SSI_GPIO_CS, 0);
 150             sysbus_connect_irq(busdev, i * num_ss + j + 1, cs_line);
 151         }
 152     }
 153
 154 }
 155
 156 static void zynq_init(MachineState *machine)
 157 {
 158     ram_addr_t ram_size = machine->ram_size;
 159     const char *cpu_model = machine->cpu_model;
 160     const char *kernel_filename = machine->kernel_filename;
 161     const char *kernel_cmdline = machine->kernel_cmdline;
 162     const char *initrd_filename = machine->initrd_filename;
 163     ObjectClass *cpu_oc;
 164     ARMCPU *cpu;
 165     MemoryRegion *address_space_mem = get_system_memory();
 166     MemoryRegion *ext_ram = g_new(MemoryRegion, 1);
 167     MemoryRegion *ocm_ram = g_new(MemoryRegion, 1);
 168     DeviceState *dev, *carddev;
 169     SysBusDevice *busdev;
 170     DriveInfo *di;
 171     BlockBackend *blk;
 172     qemu_irq pic[64];
 173     int n;
 174
 175     if (!cpu_model) {
 176         cpu_model = "cortex-a9";
 177     }
 178     cpu_oc = cpu_class_by_name(TYPE_ARM_CPU, cpu_model);
 179
 180     cpu = ARM_CPU(object_new(object_class_get_name(cpu_oc)));
 181
 182     /* By default A9 CPUs have EL3 enabled.  This board does not
 183      * currently support EL3 so the CPU EL3 property is disabled before
 184      * realization.
 185      */
 186     if (object_property_find(OBJECT(cpu), "has_el3", NULL)) {
 187         object_property_set_bool(OBJECT(cpu), false, "has_el3", &error_fatal);
 188     }
 189
 190     object_property_set_int(OBJECT(cpu), ZYNQ_BOARD_MIDR, "midr",
 191                             &error_fatal);
 192     object_property_set_int(OBJECT(cpu), MPCORE_PERIPHBASE, "reset-cbar",
 193                             &error_fatal);
 194     object_property_set_bool(OBJECT(cpu), true, "realized", &error_fatal);
 195
 196     /* max 2GB ram */
 197     if (ram_size > 0x80000000) {
 198         ram_size = 0x80000000;
 199     }
 200
 201     /* DDR remapped to address zero.  */
 202     memory_region_allocate_system_memory(ext_ram, NULL, "zynq.ext_ram",
 203                                          ram_size);
 204     memory_region_add_subregion(address_space_mem, 0, ext_ram);
 205
 206     /* 256K of on-chip memory */
 207     memory_region_init_ram(ocm_ram, NULL, "zynq.ocm_ram", 256 << 10,
 208                            &error_fatal);
 209     memory_region_add_subregion(address_space_mem, 0xFFFC0000, ocm_ram);
 210
 211     DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0);
 212
 213     /* AMD */
 214     pflash_cfi02_register(0xe2000000, NULL, "zynq.pflash", FLASH_SIZE,
 215                           dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
 216                           FLASH_SECTOR_SIZE,
 217                           FLASH_SIZE/FLASH_SECTOR_SIZE, 1,
 218                           1, 0x0066, 0x0022, 0x0000, 0x0000, 0x0555, 0x2aa,
 219                               0);
 220
 221     dev = qdev_create(NULL, "xilinx,zynq_slcr");
 222     qdev_init_nofail(dev);
 223     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xF8000000);
 224
 225     dev = qdev_create(NULL, "a9mpcore_priv");
 226     qdev_prop_set_uint32(dev, "num-cpu", 1);
 227     qdev_init_nofail(dev);
 228     busdev = SYS_BUS_DEVICE(dev);
 229     sysbus_mmio_map(busdev, 0, MPCORE_PERIPHBASE);
 230     sysbus_connect_irq(busdev, 0,
 231                        qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ));
 232
 233     for (n = 0; n < 64; n++) {
 234         pic[n] = qdev_get_gpio_in(dev, n);
 235     }
 236
 237     zynq_init_spi_flashes(0xE0006000, pic[58-IRQ_OFFSET], false);
 238     zynq_init_spi_flashes(0xE0007000, pic[81-IRQ_OFFSET], false);
 239     zynq_init_spi_flashes(0xE000D000, pic[51-IRQ_OFFSET], true);
 240
 241     sysbus_create_simple("xlnx,ps7-usb", 0xE0002000, pic[53-IRQ_OFFSET]);
 242     sysbus_create_simple("xlnx,ps7-usb", 0xE0003000, pic[76-IRQ_OFFSET]);
 243
 244     cadence_uart_create(0xE0000000, pic[59 - IRQ_OFFSET], serial_hds[0]);
 245     cadence_uart_create(0xE0001000, pic[82 - IRQ_OFFSET], serial_hds[1]);
 246
 247     sysbus_create_varargs("cadence_ttc", 0xF8001000,
 248             pic[42-IRQ_OFFSET], pic[43-IRQ_OFFSET], pic[44-IRQ_OFFSET], NULL);
 249     sysbus_create_varargs("cadence_ttc", 0xF8002000,
 250             pic[69-IRQ_OFFSET], pic[70-IRQ_OFFSET], pic[71-IRQ_OFFSET], NULL);
 251
 252     gem_init(&nd_table[0], 0xE000B000, pic[54-IRQ_OFFSET]);
 253     gem_init(&nd_table[1], 0xE000C000, pic[77-IRQ_OFFSET]);
 254
 255     dev = qdev_create(NULL, "generic-sdhci");
 256     qdev_init_nofail(dev);
 257     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xE0100000);
 258     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[56-IRQ_OFFSET]);
 259
 260     di = drive_get_next(IF_SD);
 261     blk = di ? blk_by_legacy_dinfo(di) : NULL;
 262     carddev = qdev_create(qdev_get_child_bus(dev, "sd-bus"), TYPE_SD_CARD);
 263     qdev_prop_set_drive(carddev, "drive", blk, &error_fatal);
 264     object_property_set_bool(OBJECT(carddev), true, "realized", &error_fatal);
 265
 266     dev = qdev_create(NULL, "generic-sdhci");
 267     qdev_init_nofail(dev);
 268     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xE0101000);
 269     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[79-IRQ_OFFSET]);
 270
 271     di = drive_get_next(IF_SD);
 272     blk = di ? blk_by_legacy_dinfo(di) : NULL;
 273     carddev = qdev_create(qdev_get_child_bus(dev, "sd-bus"), TYPE_SD_CARD);
 274     qdev_prop_set_drive(carddev, "drive", blk, &error_fatal);
 275     object_property_set_bool(OBJECT(carddev), true, "realized", &error_fatal);
 276
 277     dev = qdev_create(NULL, TYPE_ZYNQ_XADC);
 278     qdev_init_nofail(dev);
 279     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xF8007100);
 280     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[39-IRQ_OFFSET]);
 281
 282     dev = qdev_create(NULL, "pl330");
 283     qdev_prop_set_uint8(dev, "num_chnls",  8);
 284     qdev_prop_set_uint8(dev, "num_periph_req",  4);
 285     qdev_prop_set_uint8(dev, "num_events",  16);
 286
 287     qdev_prop_set_uint8(dev, "data_width",  64);
 288     qdev_prop_set_uint8(dev, "wr_cap",  8);
 289     qdev_prop_set_uint8(dev, "wr_q_dep",  16);
 290     qdev_prop_set_uint8(dev, "rd_cap",  8);
 291     qdev_prop_set_uint8(dev, "rd_q_dep",  16);
 292     qdev_prop_set_uint16(dev, "data_buffer_dep",  256);
 293
 294     qdev_init_nofail(dev);
 295     busdev = SYS_BUS_DEVICE(dev);
 296     sysbus_mmio_map(busdev, 0, 0xF8003000);
 297     sysbus_connect_irq(busdev, 0, pic[45-IRQ_OFFSET]); /* abort irq line */
 298     for (n = 0; n < 8; ++n) { /* event irqs */
 299         sysbus_connect_irq(busdev, n + 1, pic[dma_irqs[n] - IRQ_OFFSET]);
 300     }
 301
 302     dev = qdev_create(NULL, "xlnx.ps7-dev-cfg");
 303     qdev_init_nofail(dev);
 304     busdev = SYS_BUS_DEVICE(dev);
 305     sysbus_connect_irq(busdev, 0, pic[40 - IRQ_OFFSET]);
 306     sysbus_mmio_map(busdev, 0, 0xF8007000);
 307
 308     zynq_binfo.ram_size = ram_size;
 309     zynq_binfo.kernel_filename = kernel_filename;
 310     zynq_binfo.kernel_cmdline = kernel_cmdline;
 311     zynq_binfo.initrd_filename = initrd_filename;
 312     zynq_binfo.nb_cpus = 1;
 313     zynq_binfo.board_id = 0xd32;
 314     zynq_binfo.loader_start = 0;
 315     zynq_binfo.board_setup_addr = BOARD_SETUP_ADDR;
 316     zynq_binfo.write_board_setup = zynq_write_board_setup;
 317
 318     arm_load_kernel(ARM_CPU(first_cpu), &zynq_binfo);
 319 }
 320
 321 static void zynq_machine_init(MachineClass *mc)
 322 {
 323     mc->desc = "Xilinx Zynq Platform Baseboard for Cortex-A9";
 324     mc->init = zynq_init;
 325     mc->max_cpus = 1;
 326     mc->no_sdcard = 1;
 327 }
 328
 329 DEFINE_MACHINE("xilinx-zynq-a9", zynq_machine_init)