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/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     BusState *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_new(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     qdev_realize_and_unref(dev, NULL, &error_fatal);
  81
  82     soc = MSF2_SOC(dev);
  83
  84     /* Attach SPI flash to SPI0 controller */
  85     spi_bus = qdev_get_child_bus(dev, "spi0");
  86     spi_flash = qdev_new("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_realize_and_unref(spi_flash, spi_bus, &error_fatal);
  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)