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