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