1 /* 2 * SmartFusion2 SOM starter kit(from Emcraft) emulation. 3 * 4 * Copyright (c) 2017 Subbaraya Sundeep <sundeep.lkml@gmail.com> 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 25 #include "qemu/osdep.h" 26 #include "qemu/units.h" 27 #include "qapi/error.h" 28 #include "qemu/error-report.h" 29 #include "hw/boards.h" 30 #include "hw/qdev-properties.h" 31 #include "hw/arm/boot.h" 32 #include "exec/address-spaces.h" 33 #include "hw/arm/msf2-soc.h" 34 #include "cpu.h" 35 36 #define DDR_BASE_ADDRESS 0xA0000000 37 #define DDR_SIZE (64 * MiB) 38 39 #define M2S010_ENVM_SIZE (256 * KiB) 40 #define M2S010_ESRAM_SIZE (64 * KiB) 41 42 static void emcraft_sf2_s2s010_init(MachineState *machine) 43 { 44 DeviceState *dev; 45 DeviceState *spi_flash; 46 MSF2State *soc; 47 MachineClass *mc = MACHINE_GET_CLASS(machine); 48 DriveInfo *dinfo = drive_get_next(IF_MTD); 49 qemu_irq cs_line; 50 SSIBus *spi_bus; 51 MemoryRegion *sysmem = get_system_memory(); 52 MemoryRegion *ddr = g_new(MemoryRegion, 1); 53 54 if (strcmp(machine->cpu_type, mc->default_cpu_type) != 0) { 55 error_report("This board can only be used with CPU %s", 56 mc->default_cpu_type); 57 exit(1); 58 } 59 60 memory_region_init_ram(ddr, NULL, "ddr-ram", DDR_SIZE, 61 &error_fatal); 62 memory_region_add_subregion(sysmem, DDR_BASE_ADDRESS, ddr); 63 64 dev = qdev_create(NULL, TYPE_MSF2_SOC); 65 qdev_prop_set_string(dev, "part-name", "M2S010"); 66 qdev_prop_set_string(dev, "cpu-type", mc->default_cpu_type); 67 68 qdev_prop_set_uint64(dev, "eNVM-size", M2S010_ENVM_SIZE); 69 qdev_prop_set_uint64(dev, "eSRAM-size", M2S010_ESRAM_SIZE); 70 71 /* 72 * CPU clock and peripheral clocks(APB0, APB1)are configurable 73 * in Libero. CPU clock is divided by APB0 and APB1 divisors for 74 * peripherals. Emcraft's SoM kit comes with these settings by default. 75 */ 76 qdev_prop_set_uint32(dev, "m3clk", 142 * 1000000); 77 qdev_prop_set_uint32(dev, "apb0div", 2); 78 qdev_prop_set_uint32(dev, "apb1div", 2); 79 80 object_property_set_bool(OBJECT(dev), true, "realized", &error_fatal); 81 82 soc = MSF2_SOC(dev); 83 84 /* Attach SPI flash to SPI0 controller */ 85 spi_bus = (SSIBus *)qdev_get_child_bus(dev, "spi0"); 86 spi_flash = ssi_create_slave_no_init(spi_bus, "s25sl12801"); 87 qdev_prop_set_uint8(spi_flash, "spansion-cr2nv", 1); 88 if (dinfo) { 89 qdev_prop_set_drive(spi_flash, "drive", blk_by_legacy_dinfo(dinfo), 90 &error_fatal); 91 } 92 qdev_init_nofail(spi_flash); 93 cs_line = qdev_get_gpio_in_named(spi_flash, SSI_GPIO_CS, 0); 94 sysbus_connect_irq(SYS_BUS_DEVICE(&soc->spi[0]), 1, cs_line); 95 96 armv7m_load_kernel(ARM_CPU(first_cpu), machine->kernel_filename, 97 soc->envm_size); 98 } 99 100 static void emcraft_sf2_machine_init(MachineClass *mc) 101 { 102 mc->desc = "SmartFusion2 SOM kit from Emcraft (M2S010)"; 103 mc->init = emcraft_sf2_s2s010_init; 104 mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-m3"); 105 } 106 107 DEFINE_MACHINE("emcraft-sf2", emcraft_sf2_machine_init) 108