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 "hw/sysbus.h"
  29 #include "hw/hw.h"
  30 #include "net/net.h"
  31 #include "hw/block/flash.h"
  32 #include "sysemu/sysemu.h"
  33 #include "hw/devices.h"
  34 #include "hw/boards.h"
  35 #include "hw/xilinx.h"
  36 #include "sysemu/blockdev.h"
  37 #include "hw/char/serial.h"
  38 #include "exec/address-spaces.h"
  39 #include "hw/ssi.h"
  40
  41 #include "boot.h"
  42
  43 #include "hw/stream.h"
  44
  45 #define LMB_BRAM_SIZE  (128 * 1024)
  46 #define FLASH_SIZE     (32 * 1024 * 1024)
  47
  48 #define BINARY_DEVICE_TREE_FILE "petalogix-ml605.dtb"
  49
  50 #define NUM_SPI_FLASHES 4
  51
  52 #define SPI_BASEADDR 0x40a00000
  53 #define MEMORY_BASEADDR 0x50000000
  54 #define FLASH_BASEADDR 0x86000000
  55 #define INTC_BASEADDR 0x81800000
  56 #define TIMER_BASEADDR 0x83c00000
  57 #define UART16550_BASEADDR 0x83e00000
  58 #define AXIENET_BASEADDR 0x82780000
  59 #define AXIDMA_BASEADDR 0x84600000
  60
  61 #define AXIDMA_IRQ1         0
  62 #define AXIDMA_IRQ0         1
  63 #define TIMER_IRQ           2
  64 #define AXIENET_IRQ         3
  65 #define SPI_IRQ             4
  66 #define UART16550_IRQ       5
  67
  68 static void machine_cpu_reset(MicroBlazeCPU *cpu)
  69 {
  70     CPUMBState *env = &cpu->env;
  71
  72     env->pvr.regs[10] = 0x0e000000; /* virtex 6 */
  73     /* setup pvr to match kernel setting */
  74     env->pvr.regs[5] |= PVR5_DCACHE_WRITEBACK_MASK;
  75     env->pvr.regs[0] |= PVR0_USE_FPU_MASK | PVR0_ENDI;
  76     env->pvr.regs[0] = (env->pvr.regs[0] & ~PVR0_VERSION_MASK) | (0x14 << 8);
  77     env->pvr.regs[2] ^= PVR2_USE_FPU2_MASK;
  78     env->pvr.regs[4] = 0xc56b8000;
  79     env->pvr.regs[5] = 0xc56be000;
  80 }
  81
  82 static void
  83 petalogix_ml605_init(QEMUMachineInitArgs *args)
  84 {
  85     ram_addr_t ram_size = args->ram_size;
  86     MemoryRegion *address_space_mem = get_system_memory();
  87     DeviceState *dev, *dma, *eth0;
  88     Object *ds, *cs;
  89     MicroBlazeCPU *cpu;
  90     SysBusDevice *busdev;
  91     DriveInfo *dinfo;
  92     int i;
  93     hwaddr ddr_base = MEMORY_BASEADDR;
  94     MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1);
  95     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
  96     qemu_irq irq[32];
  97
  98     /* init CPUs */
  99     cpu = MICROBLAZE_CPU(object_new(TYPE_MICROBLAZE_CPU));
 100     object_property_set_bool(OBJECT(cpu), true, "realized", &error_abort);
 101
 102     /* Attach emulated BRAM through the LMB.  */
 103     memory_region_init_ram(phys_lmb_bram, NULL, "petalogix_ml605.lmb_bram",
 104                            LMB_BRAM_SIZE);
 105     vmstate_register_ram_global(phys_lmb_bram);
 106     memory_region_add_subregion(address_space_mem, 0x00000000, phys_lmb_bram);
 107
 108     memory_region_init_ram(phys_ram, NULL, "petalogix_ml605.ram", ram_size);
 109     vmstate_register_ram_global(phys_ram);
 110     memory_region_add_subregion(address_space_mem, ddr_base, phys_ram);
 111
 112     dinfo = drive_get(IF_PFLASH, 0, 0);
 113     /* 5th parameter 2 means bank-width
 114      * 10th paremeter 0 means little-endian */
 115     pflash_cfi01_register(FLASH_BASEADDR,
 116                           NULL, "petalogix_ml605.flash", FLASH_SIZE,
 117                           dinfo ? dinfo->bdrv : NULL, (64 * 1024),
 118                           FLASH_SIZE >> 16,
 119                           2, 0x89, 0x18, 0x0000, 0x0, 0);
 120
 121
 122     dev = xilinx_intc_create(INTC_BASEADDR, qdev_get_gpio_in(DEVICE(cpu),
 123                              MB_CPU_IRQ), 4);
 124     for (i = 0; i < 32; i++) {
 125         irq[i] = qdev_get_gpio_in(dev, i);
 126     }
 127
 128     serial_mm_init(address_space_mem, UART16550_BASEADDR + 0x1000, 2,
 129                    irq[UART16550_IRQ], 115200, serial_hds[0],
 130                    DEVICE_LITTLE_ENDIAN);
 131
 132     /* 2 timers at irq 2 @ 100 Mhz.  */
 133     xilinx_timer_create(TIMER_BASEADDR, irq[2], 0, 100 * 1000000);
 134
 135     /* axi ethernet and dma initialization. */
 136     qemu_check_nic_model(&nd_table[0], "xlnx.axi-ethernet");
 137     eth0 = qdev_create(NULL, "xlnx.axi-ethernet");
 138     dma = qdev_create(NULL, "xlnx.axi-dma");
 139
 140     /* FIXME: attach to the sysbus instead */
 141     object_property_add_child(qdev_get_machine(), "xilinx-eth", OBJECT(eth0),
 142                               NULL);
 143     object_property_add_child(qdev_get_machine(), "xilinx-dma", OBJECT(dma),
 144                               NULL);
 145
 146     ds = object_property_get_link(OBJECT(dma),
 147                                   "axistream-connected-target", NULL);
 148     cs = object_property_get_link(OBJECT(dma),
 149                                   "axistream-control-connected-target", NULL);
 150     xilinx_axiethernet_init(eth0, &nd_table[0], STREAM_SLAVE(ds),
 151                             STREAM_SLAVE(cs), 0x82780000, irq[3], 0x1000,
 152                             0x1000);
 153
 154     ds = object_property_get_link(OBJECT(eth0),
 155                                   "axistream-connected-target", NULL);
 156     cs = object_property_get_link(OBJECT(eth0),
 157                                   "axistream-control-connected-target", NULL);
 158     xilinx_axidma_init(dma, STREAM_SLAVE(ds), STREAM_SLAVE(cs), 0x84600000,
 159                        irq[1], irq[0], 100 * 1000000);
 160
 161     {
 162         SSIBus *spi;
 163
 164         dev = qdev_create(NULL, "xlnx.xps-spi");
 165         qdev_prop_set_uint8(dev, "num-ss-bits", NUM_SPI_FLASHES);
 166         qdev_init_nofail(dev);
 167         busdev = SYS_BUS_DEVICE(dev);
 168         sysbus_mmio_map(busdev, 0, SPI_BASEADDR);
 169         sysbus_connect_irq(busdev, 0, irq[SPI_IRQ]);
 170
 171         spi = (SSIBus *)qdev_get_child_bus(dev, "spi");
 172
 173         for (i = 0; i < NUM_SPI_FLASHES; i++) {
 174             qemu_irq cs_line;
 175
 176             dev = ssi_create_slave(spi, "n25q128");
 177             cs_line = qdev_get_gpio_in(dev, 0);
 178             sysbus_connect_irq(busdev, i+1, cs_line);
 179         }
 180     }
 181
 182     microblaze_load_kernel(cpu, ddr_base, ram_size,
 183                            args->initrd_filename,
 184                            BINARY_DEVICE_TREE_FILE,
 185                            machine_cpu_reset);
 186
 187 }
 188
 189 static QEMUMachine petalogix_ml605_machine = {
 190     .name = "petalogix-ml605",
 191     .desc = "PetaLogix linux refdesign for xilinx ml605 little endian",
 192     .init = petalogix_ml605_init,
 193     .is_default = 0,
 194 };
 195
 196 static void petalogix_ml605_machine_init(void)
 197 {
 198     qemu_register_machine(&petalogix_ml605_machine);
 199 }
 200
 201 machine_init(petalogix_ml605_machine_init);