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 "sysemu/block-backend.h" 36 #include "hw/char/serial.h" 37 #include "exec/address-spaces.h" 38 #include "hw/ssi.h" 39 40 #include "boot.h" 41 42 #include "hw/stream.h" 43 44 #define LMB_BRAM_SIZE (128 * 1024) 45 #define FLASH_SIZE (32 * 1024 * 1024) 46 47 #define BINARY_DEVICE_TREE_FILE "petalogix-ml605.dtb" 48 49 #define NUM_SPI_FLASHES 4 50 51 #define SPI_BASEADDR 0x40a00000 52 #define MEMORY_BASEADDR 0x50000000 53 #define FLASH_BASEADDR 0x86000000 54 #define INTC_BASEADDR 0x81800000 55 #define TIMER_BASEADDR 0x83c00000 56 #define UART16550_BASEADDR 0x83e00000 57 #define AXIENET_BASEADDR 0x82780000 58 #define AXIDMA_BASEADDR 0x84600000 59 60 #define AXIDMA_IRQ1 0 61 #define AXIDMA_IRQ0 1 62 #define TIMER_IRQ 2 63 #define AXIENET_IRQ 3 64 #define SPI_IRQ 4 65 #define UART16550_IRQ 5 66 67 static void machine_cpu_reset(MicroBlazeCPU *cpu) 68 { 69 CPUMBState *env = &cpu->env; 70 71 env->pvr.regs[10] = 0x0e000000; /* virtex 6 */ 72 /* setup pvr to match kernel setting */ 73 env->pvr.regs[0] |= PVR0_ENDI; 74 env->pvr.regs[0] = (env->pvr.regs[0] & ~PVR0_VERSION_MASK) | (0x14 << 8); 75 env->pvr.regs[4] = 0xc56b8000; 76 env->pvr.regs[5] = 0xc56be000; 77 } 78 79 static void 80 petalogix_ml605_init(MachineState *machine) 81 { 82 ram_addr_t ram_size = machine->ram_size; 83 MemoryRegion *address_space_mem = get_system_memory(); 84 DeviceState *dev, *dma, *eth0; 85 Object *ds, *cs; 86 MicroBlazeCPU *cpu; 87 SysBusDevice *busdev; 88 DriveInfo *dinfo; 89 int i; 90 MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1); 91 MemoryRegion *phys_ram = g_new(MemoryRegion, 1); 92 qemu_irq irq[32]; 93 94 /* init CPUs */ 95 cpu = MICROBLAZE_CPU(object_new(TYPE_MICROBLAZE_CPU)); 96 /* Use FPU but don't use floating point conversion and square 97 * root instructions 98 */ 99 object_property_set_int(OBJECT(cpu), 1, "use-fpu", &error_abort); 100 object_property_set_bool(OBJECT(cpu), true, "dcache-writeback", 101 &error_abort); 102 object_property_set_bool(OBJECT(cpu), true, "realized", &error_abort); 103 104 /* Attach emulated BRAM through the LMB. */ 105 memory_region_init_ram(phys_lmb_bram, NULL, "petalogix_ml605.lmb_bram", 106 LMB_BRAM_SIZE, &error_abort); 107 vmstate_register_ram_global(phys_lmb_bram); 108 memory_region_add_subregion(address_space_mem, 0x00000000, phys_lmb_bram); 109 110 memory_region_init_ram(phys_ram, NULL, "petalogix_ml605.ram", ram_size, 111 &error_abort); 112 vmstate_register_ram_global(phys_ram); 113 memory_region_add_subregion(address_space_mem, MEMORY_BASEADDR, phys_ram); 114 115 dinfo = drive_get(IF_PFLASH, 0, 0); 116 /* 5th parameter 2 means bank-width 117 * 10th paremeter 0 means little-endian */ 118 pflash_cfi01_register(FLASH_BASEADDR, 119 NULL, "petalogix_ml605.flash", FLASH_SIZE, 120 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 121 (64 * 1024), FLASH_SIZE >> 16, 122 2, 0x89, 0x18, 0x0000, 0x0, 0); 123 124 125 dev = qdev_create(NULL, "xlnx.xps-intc"); 126 qdev_prop_set_uint32(dev, "kind-of-intr", 1 << TIMER_IRQ); 127 qdev_init_nofail(dev); 128 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, INTC_BASEADDR); 129 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, 130 qdev_get_gpio_in(DEVICE(cpu), MB_CPU_IRQ)); 131 for (i = 0; i < 32; i++) { 132 irq[i] = qdev_get_gpio_in(dev, i); 133 } 134 135 serial_mm_init(address_space_mem, UART16550_BASEADDR + 0x1000, 2, 136 irq[UART16550_IRQ], 115200, serial_hds[0], 137 DEVICE_LITTLE_ENDIAN); 138 139 /* 2 timers at irq 2 @ 100 Mhz. */ 140 dev = qdev_create(NULL, "xlnx.xps-timer"); 141 qdev_prop_set_uint32(dev, "one-timer-only", 0); 142 qdev_prop_set_uint32(dev, "clock-frequency", 100 * 1000000); 143 qdev_init_nofail(dev); 144 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, TIMER_BASEADDR); 145 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[TIMER_IRQ]); 146 147 /* axi ethernet and dma initialization. */ 148 qemu_check_nic_model(&nd_table[0], "xlnx.axi-ethernet"); 149 eth0 = qdev_create(NULL, "xlnx.axi-ethernet"); 150 dma = qdev_create(NULL, "xlnx.axi-dma"); 151 152 /* FIXME: attach to the sysbus instead */ 153 object_property_add_child(qdev_get_machine(), "xilinx-eth", OBJECT(eth0), 154 NULL); 155 object_property_add_child(qdev_get_machine(), "xilinx-dma", OBJECT(dma), 156 NULL); 157 158 ds = object_property_get_link(OBJECT(dma), 159 "axistream-connected-target", NULL); 160 cs = object_property_get_link(OBJECT(dma), 161 "axistream-control-connected-target", NULL); 162 qdev_set_nic_properties(eth0, &nd_table[0]); 163 qdev_prop_set_uint32(eth0, "rxmem", 0x1000); 164 qdev_prop_set_uint32(eth0, "txmem", 0x1000); 165 object_property_set_link(OBJECT(eth0), OBJECT(ds), 166 "axistream-connected", &error_abort); 167 object_property_set_link(OBJECT(eth0), OBJECT(cs), 168 "axistream-control-connected", &error_abort); 169 qdev_init_nofail(eth0); 170 sysbus_mmio_map(SYS_BUS_DEVICE(eth0), 0, AXIENET_BASEADDR); 171 sysbus_connect_irq(SYS_BUS_DEVICE(eth0), 0, irq[AXIENET_IRQ]); 172 173 ds = object_property_get_link(OBJECT(eth0), 174 "axistream-connected-target", NULL); 175 cs = object_property_get_link(OBJECT(eth0), 176 "axistream-control-connected-target", NULL); 177 qdev_prop_set_uint32(dma, "freqhz", 100 * 1000000); 178 object_property_set_link(OBJECT(dma), OBJECT(ds), 179 "axistream-connected", &error_abort); 180 object_property_set_link(OBJECT(dma), OBJECT(cs), 181 "axistream-control-connected", &error_abort); 182 qdev_init_nofail(dma); 183 sysbus_mmio_map(SYS_BUS_DEVICE(dma), 0, AXIDMA_BASEADDR); 184 sysbus_connect_irq(SYS_BUS_DEVICE(dma), 0, irq[AXIDMA_IRQ0]); 185 sysbus_connect_irq(SYS_BUS_DEVICE(dma), 1, irq[AXIDMA_IRQ1]); 186 187 { 188 SSIBus *spi; 189 190 dev = qdev_create(NULL, "xlnx.xps-spi"); 191 qdev_prop_set_uint8(dev, "num-ss-bits", NUM_SPI_FLASHES); 192 qdev_init_nofail(dev); 193 busdev = SYS_BUS_DEVICE(dev); 194 sysbus_mmio_map(busdev, 0, SPI_BASEADDR); 195 sysbus_connect_irq(busdev, 0, irq[SPI_IRQ]); 196 197 spi = (SSIBus *)qdev_get_child_bus(dev, "spi"); 198 199 for (i = 0; i < NUM_SPI_FLASHES; i++) { 200 qemu_irq cs_line; 201 202 dev = ssi_create_slave(spi, "n25q128"); 203 cs_line = qdev_get_gpio_in_named(dev, SSI_GPIO_CS, 0); 204 sysbus_connect_irq(busdev, i+1, cs_line); 205 } 206 } 207 208 microblaze_load_kernel(cpu, MEMORY_BASEADDR, ram_size, 209 machine->initrd_filename, 210 BINARY_DEVICE_TREE_FILE, 211 machine_cpu_reset); 212 213 } 214 215 static QEMUMachine petalogix_ml605_machine = { 216 .name = "petalogix-ml605", 217 .desc = "PetaLogix linux refdesign for xilinx ml605 little endian", 218 .init = petalogix_ml605_init, 219 .is_default = 0, 220 }; 221 222 static void petalogix_ml605_machine_init(void) 223 { 224 qemu_register_machine(&petalogix_ml605_machine); 225 } 226 227 machine_init(petalogix_ml605_machine_init); 228