LXR qemu/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 "hw/qdev-clock.h"
  33#include "exec/address-spaces.h"
  34#include "hw/arm/msf2-soc.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
  42static 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    Clock *m3clk;
  54
  55    if (strcmp(machine->cpu_type, mc->default_cpu_type) != 0) {
  56        error_report("This board can only be used with CPU %s",
  57                     mc->default_cpu_type);
  58        exit(1);
  59    }
  60
  61    memory_region_init_ram(ddr, NULL, "ddr-ram", DDR_SIZE,
  62                           &error_fatal);
  63    memory_region_add_subregion(sysmem, DDR_BASE_ADDRESS, ddr);
  64
  65    dev = qdev_new(TYPE_MSF2_SOC);
  66    qdev_prop_set_string(dev, "part-name", "M2S010");
  67    qdev_prop_set_string(dev, "cpu-type", mc->default_cpu_type);
  68
  69    qdev_prop_set_uint64(dev, "eNVM-size", M2S010_ENVM_SIZE);
  70    qdev_prop_set_uint64(dev, "eSRAM-size", M2S010_ESRAM_SIZE);
  71
  72    /*
  73     * CPU clock and peripheral clocks(APB0, APB1)are configurable
  74     * in Libero. CPU clock is divided by APB0 and APB1 divisors for
  75     * peripherals. Emcraft's SoM kit comes with these settings by default.
  76     */
  77    /* This clock doesn't need migration because it is fixed-frequency */
  78    m3clk = clock_new(OBJECT(machine), "m3clk");
  79    clock_set_hz(m3clk, 142 * 1000000);
  80    qdev_connect_clock_in(dev, "m3clk", m3clk);
  81    qdev_prop_set_uint32(dev, "apb0div", 2);
  82    qdev_prop_set_uint32(dev, "apb1div", 2);
  83
  84    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
  85
  86    soc = MSF2_SOC(dev);
  87
  88    /* Attach SPI flash to SPI0 controller */
  89    spi_bus = qdev_get_child_bus(dev, "spi0");
  90    spi_flash = qdev_new("s25sl12801");
  91    qdev_prop_set_uint8(spi_flash, "spansion-cr2nv", 1);
  92    if (dinfo) {
  93        qdev_prop_set_drive_err(spi_flash, "drive",
  94                                blk_by_legacy_dinfo(dinfo), &error_fatal);
  95    }
  96    qdev_realize_and_unref(spi_flash, spi_bus, &error_fatal);
  97    cs_line = qdev_get_gpio_in_named(spi_flash, SSI_GPIO_CS, 0);
  98    sysbus_connect_irq(SYS_BUS_DEVICE(&soc->spi[0]), 1, cs_line);
  99
 100    armv7m_load_kernel(ARM_CPU(first_cpu), machine->kernel_filename,
 101                       soc->envm_size);
 102}
 103
 104static void emcraft_sf2_machine_init(MachineClass *mc)
 105{
 106    mc->desc = "SmartFusion2 SOM kit from Emcraft (M2S010)";
 107    mc->init = emcraft_sf2_s2s010_init;
 108    mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-m3");
 109}
 110
 111DEFINE_MACHINE("emcraft-sf2", emcraft_sf2_machine_init)
 112