hw/microblaze/petalogix_ml605_mmu.c

   1 /*
   2  * Model of Petalogix linux reference design targeting Xilinx Spartan ml605
   3  * board.
   4  *
   5  * Copyright (c) 2011 Michal Simek <monstr@monstr.eu>
   6  * Copyright (c) 2011 PetaLogix
   7  * Copyright (c) 2009 Edgar E. Iglesias.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a copy
  10  * of this software and associated documentation files (the "Software"), to deal
  11  * in the Software without restriction, including without limitation the rights
  12  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13  * copies of the Software, and to permit persons to whom the Software is
  14  * furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included in
  17  * all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  22  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  25  * THE SOFTWARE.
  26  */
  27
  28 #include "qemu/osdep.h"
  29 #include "qemu/units.h"
  30 #include "qapi/error.h"
  31 #include "cpu.h"
  32 #include "hw/sysbus.h"
  33 #include "net/net.h"
  34 #include "hw/block/flash.h"
  35 #include "sysemu/sysemu.h"
  36 #include "hw/boards.h"
  37 #include "hw/char/serial.h"
  38 #include "hw/qdev-properties.h"
  39 #include "exec/address-spaces.h"
  40 #include "hw/ssi/ssi.h"
  41
  42 #include "boot.h"
  43
  44 #include "hw/stream.h"
  45
  46 #define LMB_BRAM_SIZE  (128 * KiB)
  47 #define FLASH_SIZE     (32 * MiB)
  48
  49 #define BINARY_DEVICE_TREE_FILE "petalogix-ml605.dtb"
  50
  51 #define NUM_SPI_FLASHES 4
  52
  53 #define SPI_BASEADDR 0x40a00000
  54 #define MEMORY_BASEADDR 0x50000000
  55 #define FLASH_BASEADDR 0x86000000
  56 #define INTC_BASEADDR 0x81800000
  57 #define TIMER_BASEADDR 0x83c00000
  58 #define UART16550_BASEADDR 0x83e00000
  59 #define AXIENET_BASEADDR 0x82780000
  60 #define AXIDMA_BASEADDR 0x84600000
  61
  62 #define AXIDMA_IRQ1         0
  63 #define AXIDMA_IRQ0         1
  64 #define TIMER_IRQ           2
  65 #define AXIENET_IRQ         3
  66 #define SPI_IRQ             4
  67 #define UART16550_IRQ       5
  68
  69 static void
  70 petalogix_ml605_init(MachineState *machine)
  71 {
  72     ram_addr_t ram_size = machine->ram_size;
  73     MemoryRegion *address_space_mem = get_system_memory();
  74     DeviceState *dev, *dma, *eth0;
  75     Object *ds, *cs;
  76     MicroBlazeCPU *cpu;
  77     SysBusDevice *busdev;
  78     DriveInfo *dinfo;
  79     int i;
  80     MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1);
  81     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
  82     qemu_irq irq[32];
  83
  84     /* init CPUs */
  85     cpu = MICROBLAZE_CPU(object_new(TYPE_MICROBLAZE_CPU));
  86     object_property_set_str(OBJECT(cpu), "version", "8.10.a", &error_abort);
  87     /* Use FPU but don't use floating point conversion and square
  88      * root instructions
  89      */
  90     object_property_set_int(OBJECT(cpu), "use-fpu", 1, &error_abort);
  91     object_property_set_bool(OBJECT(cpu), "dcache-writeback", true,
  92                              &error_abort);
  93     object_property_set_bool(OBJECT(cpu), "endianness", true, &error_abort);
  94     qdev_realize(DEVICE(cpu), NULL, &error_abort);
  95
  96     /* Attach emulated BRAM through the LMB.  */
  97     memory_region_init_ram(phys_lmb_bram, NULL, "petalogix_ml605.lmb_bram",
  98                            LMB_BRAM_SIZE, &error_fatal);
  99     memory_region_add_subregion(address_space_mem, 0x00000000, phys_lmb_bram);
 100
 101     memory_region_init_ram(phys_ram, NULL, "petalogix_ml605.ram", ram_size,
 102                            &error_fatal);
 103     memory_region_add_subregion(address_space_mem, MEMORY_BASEADDR, phys_ram);
 104
 105     dinfo = drive_get(IF_PFLASH, 0, 0);
 106     /* 5th parameter 2 means bank-width
 107      * 10th paremeter 0 means little-endian */
 108     pflash_cfi01_register(FLASH_BASEADDR, "petalogix_ml605.flash", FLASH_SIZE,
 109                           dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
 110                           64 * KiB, 2, 0x89, 0x18, 0x0000, 0x0, 0);
 111
 112
 113     dev = qdev_new("xlnx.xps-intc");
 114     qdev_prop_set_uint32(dev, "kind-of-intr", 1 << TIMER_IRQ);
 115     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
 116     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, INTC_BASEADDR);
 117     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
 118                        qdev_get_gpio_in(DEVICE(cpu), MB_CPU_IRQ));
 119     for (i = 0; i < 32; i++) {
 120         irq[i] = qdev_get_gpio_in(dev, i);
 121     }
 122
 123     serial_mm_init(address_space_mem, UART16550_BASEADDR + 0x1000, 2,
 124                    irq[UART16550_IRQ], 115200, serial_hd(0),
 125                    DEVICE_LITTLE_ENDIAN);
 126
 127     /* 2 timers at irq 2 @ 100 Mhz.  */
 128     dev = qdev_new("xlnx.xps-timer");
 129     qdev_prop_set_uint32(dev, "one-timer-only", 0);
 130     qdev_prop_set_uint32(dev, "clock-frequency", 100 * 1000000);
 131     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
 132     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, TIMER_BASEADDR);
 133     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[TIMER_IRQ]);
 134
 135     /* axi ethernet and dma initialization. */
 136     qemu_check_nic_model(&nd_table[0], "xlnx.axi-ethernet");
 137     eth0 = qdev_new("xlnx.axi-ethernet");
 138     dma = qdev_new("xlnx.axi-dma");
 139
 140     /* FIXME: attach to the sysbus instead */
 141     object_property_add_child(qdev_get_machine(), "xilinx-eth", OBJECT(eth0));
 142     object_property_add_child(qdev_get_machine(), "xilinx-dma", OBJECT(dma));
 143
 144     ds = object_property_get_link(OBJECT(dma),
 145                                   "axistream-connected-target", NULL);
 146     cs = object_property_get_link(OBJECT(dma),
 147                                   "axistream-control-connected-target", NULL);
 148     qdev_set_nic_properties(eth0, &nd_table[0]);
 149     qdev_prop_set_uint32(eth0, "rxmem", 0x1000);
 150     qdev_prop_set_uint32(eth0, "txmem", 0x1000);
 151     object_property_set_link(OBJECT(eth0), "axistream-connected", ds,
 152                              &error_abort);
 153     object_property_set_link(OBJECT(eth0), "axistream-control-connected", cs,
 154                              &error_abort);
 155     sysbus_realize_and_unref(SYS_BUS_DEVICE(eth0), &error_fatal);
 156     sysbus_mmio_map(SYS_BUS_DEVICE(eth0), 0, AXIENET_BASEADDR);
 157     sysbus_connect_irq(SYS_BUS_DEVICE(eth0), 0, irq[AXIENET_IRQ]);
 158
 159     ds = object_property_get_link(OBJECT(eth0),
 160                                   "axistream-connected-target", NULL);
 161     cs = object_property_get_link(OBJECT(eth0),
 162                                   "axistream-control-connected-target", NULL);
 163     qdev_prop_set_uint32(dma, "freqhz", 100 * 1000000);
 164     object_property_set_link(OBJECT(dma), "axistream-connected", ds,
 165                              &error_abort);
 166     object_property_set_link(OBJECT(dma), "axistream-control-connected", cs,
 167                              &error_abort);
 168     sysbus_realize_and_unref(SYS_BUS_DEVICE(dma), &error_fatal);
 169     sysbus_mmio_map(SYS_BUS_DEVICE(dma), 0, AXIDMA_BASEADDR);
 170     sysbus_connect_irq(SYS_BUS_DEVICE(dma), 0, irq[AXIDMA_IRQ0]);
 171     sysbus_connect_irq(SYS_BUS_DEVICE(dma), 1, irq[AXIDMA_IRQ1]);
 172
 173     {
 174         SSIBus *spi;
 175
 176         dev = qdev_new("xlnx.xps-spi");
 177         qdev_prop_set_uint8(dev, "num-ss-bits", NUM_SPI_FLASHES);
 178         busdev = SYS_BUS_DEVICE(dev);
 179         sysbus_realize_and_unref(busdev, &error_fatal);
 180         sysbus_mmio_map(busdev, 0, SPI_BASEADDR);
 181         sysbus_connect_irq(busdev, 0, irq[SPI_IRQ]);
 182
 183         spi = (SSIBus *)qdev_get_child_bus(dev, "spi");
 184
 185         for (i = 0; i < NUM_SPI_FLASHES; i++) {
 186             DriveInfo *dinfo = drive_get_next(IF_MTD);
 187             qemu_irq cs_line;
 188
 189             dev = qdev_new("n25q128");
 190             if (dinfo) {
 191                 qdev_prop_set_drive_err(dev, "drive",
 192                                         blk_by_legacy_dinfo(dinfo),
 193                                         &error_fatal);
 194             }
 195             qdev_realize_and_unref(dev, BUS(spi), &error_fatal);
 196
 197             cs_line = qdev_get_gpio_in_named(dev, SSI_GPIO_CS, 0);
 198             sysbus_connect_irq(busdev, i+1, cs_line);
 199         }
 200     }
 201
 202     /* setup PVR to match kernel settings */
 203     cpu->cfg.pvr_regs[4] = 0xc56b8000;
 204     cpu->cfg.pvr_regs[5] = 0xc56be000;
 205     cpu->cfg.pvr_regs[10] = 0x0e000000; /* virtex 6 */
 206
 207     microblaze_load_kernel(cpu, MEMORY_BASEADDR, ram_size,
 208                            machine->initrd_filename,
 209                            BINARY_DEVICE_TREE_FILE,
 210                            NULL);
 211
 212 }
 213
 214 static void petalogix_ml605_machine_init(MachineClass *mc)
 215 {
 216     mc->desc = "PetaLogix linux refdesign for xilinx ml605 little endian";
 217     mc->init = petalogix_ml605_init;
 218 }
 219
 220 DEFINE_MACHINE("petalogix-ml605", petalogix_ml605_machine_init)