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/*
* SmartFusion2 SOM starter kit(from Emcraft) emulation.
*
* M2S-FG484 SOM hardware architecture specification:
* https://www.emcraft.com/jdownloads/som/m2s/m2s-som-ha.pdf
*
* 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 "qemu/units.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
#include "hw/boards.h"
#include "hw/qdev-properties.h"
#include "hw/arm/boot.h"
#include "hw/qdev-clock.h"
#include "exec/address-spaces.h"
#include "hw/arm/msf2-soc.h"
#define DDR_BASE_ADDRESS 0xA0000000
#define DDR_SIZE (64 * MiB)
#define M2S010_ENVM_SIZE (256 * KiB)
#define M2S010_ESRAM_SIZE (64 * KiB)
static void emcraft_sf2_s2s010_init(MachineState *machine)
{
DeviceState *dev;
DeviceState *spi_flash;
MSF2State *soc;
DriveInfo *dinfo = drive_get(IF_MTD, 0, 0);
qemu_irq cs_line;
BusState *spi_bus;
MemoryRegion *sysmem = get_system_memory();
MemoryRegion *ddr = g_new(MemoryRegion, 1);
Clock *m3clk;
memory_region_init_ram(ddr, NULL, "ddr-ram", DDR_SIZE,
&error_fatal);
memory_region_add_subregion(sysmem, DDR_BASE_ADDRESS, ddr);
dev = qdev_new(TYPE_MSF2_SOC);
object_property_add_child(OBJECT(machine), "soc", OBJECT(dev));
qdev_prop_set_string(dev, "part-name", "M2S010");
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.
*/
/* This clock doesn't need migration because it is fixed-frequency */
m3clk = clock_new(OBJECT(machine), "m3clk");
clock_set_hz(m3clk, 142 * 1000000);
qdev_connect_clock_in(dev, "m3clk", m3clk);
qdev_prop_set_uint32(dev, "apb0div", 2);
qdev_prop_set_uint32(dev, "apb1div", 2);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
soc = MSF2_SOC(dev);
/* Attach SPI flash to SPI0 controller */
spi_bus = qdev_get_child_bus(dev, "spi0");
spi_flash = qdev_new("s25sl12801"); /* Spansion S25FL128SDPBHICO */
qdev_prop_set_uint8(spi_flash, "spansion-cr2nv", 1);
if (dinfo) {
qdev_prop_set_drive_err(spi_flash, "drive",
blk_by_legacy_dinfo(dinfo), &error_fatal);
}
qdev_realize_and_unref(spi_flash, spi_bus, &error_fatal);
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,
0, soc->envm_size);
}
static void emcraft_sf2_machine_init(MachineClass *mc)
{
static const char * const valid_cpu_types[] = {
ARM_CPU_TYPE_NAME("cortex-m3"),
NULL
};
mc->desc = "SmartFusion2 SOM kit from Emcraft (M2S010)";
mc->init = emcraft_sf2_s2s010_init;
mc->valid_cpu_types = valid_cpu_types;
}
DEFINE_MACHINE("emcraft-sf2", emcraft_sf2_machine_init)
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