msf2: Add Emcraft's Smartfusion2 SOM kit

obj-$(CONFIG_FSL_IMX6) += fsl-imx6.o sabrelite.o

obj-$(CONFIG_ASPEED_SOC) += aspeed_soc.o aspeed.o

obj-$(CONFIG_MPS2) += mps2.o

obj-$(CONFIG_MSF2) += msf2-soc.o

obj-$(CONFIG_MSF2) += msf2-soc.o msf2-som.o

/*

 * SmartFusion2 SOM starter kit(from Emcraft) emulation.

 *

 * Copyright (c) 2017 Subbaraya Sundeep <sundeep.lkml@gmail.com>

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#include "qemu/osdep.h"

#include "qapi/error.h"

#include "qemu/error-report.h"

#include "hw/boards.h"

#include "hw/arm/arm.h"

#include "exec/address-spaces.h"

#include "qemu/cutils.h"

#include "hw/arm/msf2-soc.h"

#include "cpu.h"

#define DDR_BASE_ADDRESS      0xA0000000

#define DDR_SIZE              (64 * M_BYTE)

#define M2S010_ENVM_SIZE      (256 * K_BYTE)

#define M2S010_ESRAM_SIZE     (64 * K_BYTE)

static void emcraft_sf2_s2s010_init(MachineState *machine)

{

    DeviceState *dev;

    DeviceState *spi_flash;

    MSF2State *soc;

    MachineClass *mc = MACHINE_GET_CLASS(machine);

    DriveInfo *dinfo = drive_get_next(IF_MTD);

    qemu_irq cs_line;

    SSIBus *spi_bus;

    MemoryRegion *sysmem = get_system_memory();

    MemoryRegion *ddr = g_new(MemoryRegion, 1);

    if (strcmp(machine->cpu_type, mc->default_cpu_type) != 0) {

        error_report("This board can only be used with CPU %s",

                     mc->default_cpu_type);

    }

    memory_region_init_ram(ddr, NULL, "ddr-ram", DDR_SIZE,

                           &error_fatal);

    memory_region_add_subregion(sysmem, DDR_BASE_ADDRESS, ddr);

    dev = qdev_create(NULL, TYPE_MSF2_SOC);

    qdev_prop_set_string(dev, "part-name", "M2S010");

    qdev_prop_set_string(dev, "cpu-type", mc->default_cpu_type);

    qdev_prop_set_uint64(dev, "eNVM-size", M2S010_ENVM_SIZE);

    qdev_prop_set_uint64(dev, "eSRAM-size", M2S010_ESRAM_SIZE);

    /*

     * CPU clock and peripheral clocks(APB0, APB1)are configurable

     * in Libero. CPU clock is divided by APB0 and APB1 divisors for

     * peripherals. Emcraft's SoM kit comes with these settings by default.

     */

    qdev_prop_set_uint32(dev, "m3clk", 142 * 1000000);

    qdev_prop_set_uint32(dev, "apb0div", 2);

    qdev_prop_set_uint32(dev, "apb1div", 2);

    object_property_set_bool(OBJECT(dev), true, "realized", &error_fatal);

    soc = MSF2_SOC(dev);

    /* Attach SPI flash to SPI0 controller */

    spi_bus = (SSIBus *)qdev_get_child_bus(dev, "spi0");

    spi_flash = ssi_create_slave_no_init(spi_bus, "s25sl12801");

    qdev_prop_set_uint8(spi_flash, "spansion-cr2nv", 1);

    if (dinfo) {

        qdev_prop_set_drive(spi_flash, "drive", blk_by_legacy_dinfo(dinfo),

                                    &error_fatal);

    }

    qdev_init_nofail(spi_flash);

    cs_line = qdev_get_gpio_in_named(spi_flash, SSI_GPIO_CS, 0);

    sysbus_connect_irq(SYS_BUS_DEVICE(&soc->spi[0]), 1, cs_line);

    armv7m_load_kernel(ARM_CPU(first_cpu), machine->kernel_filename,

                       soc->envm_size);

}

static void emcraft_sf2_machine_init(MachineClass *mc)

{

    mc->desc = "SmartFusion2 SOM kit from Emcraft (M2S010)";

    mc->init = emcraft_sf2_s2s010_init;

    mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-m3");

}

DEFINE_MACHINE("emcraft-sf2", emcraft_sf2_machine_init)