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); 202