1 /* 2 * SmartFusion2 SOM starter kit(from Emcraft) emulation. 3 * 4 * M2S-FG484 SOM hardware architecture specification: 5 * https://www.emcraft.com/jdownloads/som/m2s/m2s-som-ha.pdf 6 * 7 * Copyright (c) 2017 Subbaraya Sundeep <sundeep.lkml@gmail.com> 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 "qemu/error-report.h" 32 #include "hw/boards.h" 33 #include "hw/qdev-properties.h" 34 #include "hw/arm/boot.h" 35 #include "hw/qdev-clock.h" 36 #include "exec/address-spaces.h" 37 #include "hw/arm/msf2-soc.h" 38 39 #define DDR_BASE_ADDRESS 0xA0000000 40 #define DDR_SIZE (64 * MiB) 41 42 #define M2S010_ENVM_SIZE (256 * KiB) 43 #define M2S010_ESRAM_SIZE (64 * KiB) 44 45 static void emcraft_sf2_s2s010_init(MachineState *machine) 46 { 47 DeviceState *dev; 48 DeviceState *spi_flash; 49 MSF2State *soc; 50 MachineClass *mc = MACHINE_GET_CLASS(machine); 51 DriveInfo *dinfo = drive_get(IF_MTD, 0, 0); 52 qemu_irq cs_line; 53 BusState *spi_bus; 54 MemoryRegion *sysmem = get_system_memory(); 55 MemoryRegion *ddr = g_new(MemoryRegion, 1); 56 Clock *m3clk; 57 58 memory_region_init_ram(ddr, NULL, "ddr-ram", DDR_SIZE, 59 &error_fatal); 60 memory_region_add_subregion(sysmem, DDR_BASE_ADDRESS, ddr); 61 62 dev = qdev_new(TYPE_MSF2_SOC); 63 object_property_add_child(OBJECT(machine), "soc", OBJECT(dev)); 64 qdev_prop_set_string(dev, "part-name", "M2S010"); 65 qdev_prop_set_string(dev, "cpu-type", mc->default_cpu_type); 66 67 qdev_prop_set_uint64(dev, "eNVM-size", M2S010_ENVM_SIZE); 68 qdev_prop_set_uint64(dev, "eSRAM-size", M2S010_ESRAM_SIZE); 69 70 /* 71 * CPU clock and peripheral clocks(APB0, APB1)are configurable 72 * in Libero. CPU clock is divided by APB0 and APB1 divisors for 73 * peripherals. Emcraft's SoM kit comes with these settings by default. 74 */ 75 /* This clock doesn't need migration because it is fixed-frequency */ 76 m3clk = clock_new(OBJECT(machine), "m3clk"); 77 clock_set_hz(m3clk, 142 * 1000000); 78 qdev_connect_clock_in(dev, "m3clk", m3clk); 79 qdev_prop_set_uint32(dev, "apb0div", 2); 80 qdev_prop_set_uint32(dev, "apb1div", 2); 81 82 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 83 84 soc = MSF2_SOC(dev); 85 86 /* Attach SPI flash to SPI0 controller */ 87 spi_bus = qdev_get_child_bus(dev, "spi0"); 88 spi_flash = qdev_new("s25sl12801"); /* Spansion S25FL128SDPBHICO */ 89 qdev_prop_set_uint8(spi_flash, "spansion-cr2nv", 1); 90 if (dinfo) { 91 qdev_prop_set_drive_err(spi_flash, "drive", 92 blk_by_legacy_dinfo(dinfo), &error_fatal); 93 } 94 qdev_realize_and_unref(spi_flash, spi_bus, &error_fatal); 95 cs_line = qdev_get_gpio_in_named(spi_flash, SSI_GPIO_CS, 0); 96 sysbus_connect_irq(SYS_BUS_DEVICE(&soc->spi[0]), 1, cs_line); 97 98 armv7m_load_kernel(ARM_CPU(first_cpu), machine->kernel_filename, 99 0, soc->envm_size); 100 } 101 102 static void emcraft_sf2_machine_init(MachineClass *mc) 103 { 104 static const char * const valid_cpu_types[] = { 105 ARM_CPU_TYPE_NAME("cortex-m3"), 106 NULL 107 }; 108 109 mc->desc = "SmartFusion2 SOM kit from Emcraft (M2S010)"; 110 mc->init = emcraft_sf2_s2s010_init; 111 mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-m3"); 112 mc->valid_cpu_types = valid_cpu_types; 113 } 114 115 DEFINE_MACHINE("emcraft-sf2", emcraft_sf2_machine_init) 116