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-mm.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), "little-endian", 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 parameter 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 eth0 = qdev_new("xlnx.axi-ethernet"); 137 dma = qdev_new("xlnx.axi-dma"); 138 139 /* FIXME: attach to the sysbus instead */ 140 object_property_add_child(qdev_get_machine(), "xilinx-eth", OBJECT(eth0)); 141 object_property_add_child(qdev_get_machine(), "xilinx-dma", OBJECT(dma)); 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 qemu_configure_nic_device(eth0, true, NULL); 148 qdev_prop_set_uint32(eth0, "rxmem", 0x1000); 149 qdev_prop_set_uint32(eth0, "txmem", 0x1000); 150 object_property_set_link(OBJECT(eth0), "axistream-connected", ds, 151 &error_abort); 152 object_property_set_link(OBJECT(eth0), "axistream-control-connected", cs, 153 &error_abort); 154 sysbus_realize_and_unref(SYS_BUS_DEVICE(eth0), &error_fatal); 155 sysbus_mmio_map(SYS_BUS_DEVICE(eth0), 0, AXIENET_BASEADDR); 156 sysbus_connect_irq(SYS_BUS_DEVICE(eth0), 0, irq[AXIENET_IRQ]); 157 158 ds = object_property_get_link(OBJECT(eth0), 159 "axistream-connected-target", NULL); 160 cs = object_property_get_link(OBJECT(eth0), 161 "axistream-control-connected-target", NULL); 162 qdev_prop_set_uint32(dma, "freqhz", 100 * 1000000); 163 object_property_set_link(OBJECT(dma), "axistream-connected", ds, 164 &error_abort); 165 object_property_set_link(OBJECT(dma), "axistream-control-connected", cs, 166 &error_abort); 167 sysbus_realize_and_unref(SYS_BUS_DEVICE(dma), &error_fatal); 168 sysbus_mmio_map(SYS_BUS_DEVICE(dma), 0, AXIDMA_BASEADDR); 169 sysbus_connect_irq(SYS_BUS_DEVICE(dma), 0, irq[AXIDMA_IRQ0]); 170 sysbus_connect_irq(SYS_BUS_DEVICE(dma), 1, irq[AXIDMA_IRQ1]); 171 172 { 173 SSIBus *spi; 174 175 dev = qdev_new("xlnx.xps-spi"); 176 qdev_prop_set_uint8(dev, "num-ss-bits", NUM_SPI_FLASHES); 177 busdev = SYS_BUS_DEVICE(dev); 178 sysbus_realize_and_unref(busdev, &error_fatal); 179 sysbus_mmio_map(busdev, 0, SPI_BASEADDR); 180 sysbus_connect_irq(busdev, 0, irq[SPI_IRQ]); 181 182 spi = (SSIBus *)qdev_get_child_bus(dev, "spi"); 183 184 for (i = 0; i < NUM_SPI_FLASHES; i++) { 185 dinfo = drive_get(IF_MTD, 0, i); 186 qemu_irq cs_line; 187 188 dev = qdev_new("n25q128"); 189 if (dinfo) { 190 qdev_prop_set_drive_err(dev, "drive", 191 blk_by_legacy_dinfo(dinfo), 192 &error_fatal); 193 } 194 qdev_prop_set_uint8(dev, "cs", i); 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 #if TARGET_BIG_ENDIAN 217 mc->desc = "PetaLogix linux refdesign for xilinx ml605 (big endian)"; 218 mc->deprecation_reason = "big endian support is not tested"; 219 #else 220 mc->desc = "PetaLogix linux refdesign for xilinx ml605 (little endian)"; 221 #endif 222 mc->init = petalogix_ml605_init; 223 } 224 225 DEFINE_MACHINE("petalogix-ml605", petalogix_ml605_machine_init) 226