hw/arm/msf2-som.c

   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/arm/boot.h"
  31 #include "exec/address-spaces.h"
  32 #include "hw/arm/msf2-soc.h"
  33 #include "cpu.h"
  34
  35 #define DDR_BASE_ADDRESS      0xA0000000
  36 #define DDR_SIZE              (64 * MiB)
  37
  38 #define M2S010_ENVM_SIZE      (256 * KiB)
  39 #define M2S010_ESRAM_SIZE     (64 * KiB)
  40
  41 static void emcraft_sf2_s2s010_init(MachineState *machine)
  42 {
  43     DeviceState *dev;
  44     DeviceState *spi_flash;
  45     MSF2State *soc;
  46     MachineClass *mc = MACHINE_GET_CLASS(machine);
  47     DriveInfo *dinfo = drive_get_next(IF_MTD);
  48     qemu_irq cs_line;
  49     SSIBus *spi_bus;
  50     MemoryRegion *sysmem = get_system_memory();
  51     MemoryRegion *ddr = g_new(MemoryRegion, 1);
  52
  53     if (strcmp(machine->cpu_type, mc->default_cpu_type) != 0) {
  54         error_report("This board can only be used with CPU %s",
  55                      mc->default_cpu_type);
  56         exit(1);
  57     }
  58
  59     memory_region_init_ram(ddr, NULL, "ddr-ram", DDR_SIZE,
  60                            &error_fatal);
  61     memory_region_add_subregion(sysmem, DDR_BASE_ADDRESS, ddr);
  62
  63     dev = qdev_create(NULL, TYPE_MSF2_SOC);
  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     qdev_prop_set_uint32(dev, "m3clk", 142 * 1000000);
  76     qdev_prop_set_uint32(dev, "apb0div", 2);
  77     qdev_prop_set_uint32(dev, "apb1div", 2);
  78
  79     object_property_set_bool(OBJECT(dev), true, "realized", &error_fatal);
  80
  81     soc = MSF2_SOC(dev);
  82
  83     /* Attach SPI flash to SPI0 controller */
  84     spi_bus = (SSIBus *)qdev_get_child_bus(dev, "spi0");
  85     spi_flash = ssi_create_slave_no_init(spi_bus, "s25sl12801");
  86     qdev_prop_set_uint8(spi_flash, "spansion-cr2nv", 1);
  87     if (dinfo) {
  88         qdev_prop_set_drive(spi_flash, "drive", blk_by_legacy_dinfo(dinfo),
  89                                     &error_fatal);
  90     }
  91     qdev_init_nofail(spi_flash);
  92     cs_line = qdev_get_gpio_in_named(spi_flash, SSI_GPIO_CS, 0);
  93     sysbus_connect_irq(SYS_BUS_DEVICE(&soc->spi[0]), 1, cs_line);
  94
  95     armv7m_load_kernel(ARM_CPU(first_cpu), machine->kernel_filename,
  96                        soc->envm_size);
  97 }
  98
  99 static void emcraft_sf2_machine_init(MachineClass *mc)
 100 {
 101     mc->desc = "SmartFusion2 SOM kit from Emcraft (M2S010)";
 102     mc->init = emcraft_sf2_s2s010_init;
 103     mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-m3");
 104 }
 105
 106 DEFINE_MACHINE("emcraft-sf2", emcraft_sf2_machine_init)