/* * SmartFusion2 SoC emulation. * * Copyright (c) 2017-2020 Subbaraya Sundeep * * 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 "exec/address-spaces.h" #include "hw/char/serial-mm.h" #include "hw/arm/msf2-soc.h" #include "hw/misc/unimp.h" #include "hw/qdev-clock.h" #include "sysemu/sysemu.h" #define MSF2_TIMER_BASE 0x40004000 #define MSF2_SYSREG_BASE 0x40038000 #define MSF2_EMAC_BASE 0x40041000 #define ENVM_BASE_ADDRESS 0x60000000 #define SRAM_BASE_ADDRESS 0x20000000 #define MSF2_EMAC_IRQ 12 #define MSF2_ENVM_MAX_SIZE (512 * KiB) /* * eSRAM max size is 80k without SECDED(Single error correction and * dual error detection) feature and 64k with SECDED. * We do not support SECDED now. */ #define MSF2_ESRAM_MAX_SIZE (80 * KiB) static const uint32_t spi_addr[MSF2_NUM_SPIS] = { 0x40001000 , 0x40011000 }; static const uint32_t uart_addr[MSF2_NUM_UARTS] = { 0x40000000 , 0x40010000 }; static const int spi_irq[MSF2_NUM_SPIS] = { 2, 3 }; static const int uart_irq[MSF2_NUM_UARTS] = { 10, 11 }; static const int timer_irq[MSF2_NUM_TIMERS] = { 14, 15 }; static void m2sxxx_soc_initfn(Object *obj) { MSF2State *s = MSF2_SOC(obj); int i; object_initialize_child(obj, "armv7m", &s->armv7m, TYPE_ARMV7M); object_initialize_child(obj, "sysreg", &s->sysreg, TYPE_MSF2_SYSREG); object_initialize_child(obj, "timer", &s->timer, TYPE_MSS_TIMER); for (i = 0; i < MSF2_NUM_SPIS; i++) { object_initialize_child(obj, "spi[*]", &s->spi[i], TYPE_MSS_SPI); } object_initialize_child(obj, "emac", &s->emac, TYPE_MSS_EMAC); s->m3clk = qdev_init_clock_in(DEVICE(obj), "m3clk", NULL, NULL, 0); s->refclk = qdev_init_clock_in(DEVICE(obj), "refclk", NULL, NULL, 0); } static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp) { MSF2State *s = MSF2_SOC(dev_soc); DeviceState *dev, *armv7m; SysBusDevice *busdev; int i; MemoryRegion *system_memory = get_system_memory(); if (!clock_has_source(s->m3clk)) { error_setg(errp, "m3clk must be wired up by the board code"); return; } /* * We use s->refclk internally and only define it with qdev_init_clock_in() * so it is correctly parented and not leaked on an init/deinit; it is not * intended as an externally exposed clock. */ if (clock_has_source(s->refclk)) { error_setg(errp, "refclk must not be wired up by the board code"); return; } /* * TODO: ideally we should model the SoC SYSTICK_CR register at 0xe0042038, * which allows the guest to program the divisor between the m3clk and * the systick refclk to either /4, /8, /16 or /32, as well as setting * the value the guest can read in the STCALIB register. Currently we * implement the divisor as a fixed /32, which matches the reset value * of SYSTICK_CR. */ clock_set_mul_div(s->refclk, 32, 1); clock_set_source(s->refclk, s->m3clk); memory_region_init_rom(&s->nvm, OBJECT(dev_soc), "MSF2.eNVM", s->envm_size, &error_fatal); /* * On power-on, the eNVM region 0x60000000 is automatically * remapped to the Cortex-M3 processor executable region * start address (0x0). We do not support remapping other eNVM, * eSRAM and DDR regions by guest(via Sysreg) currently. */ memory_region_init_alias(&s->nvm_alias, OBJECT(dev_soc), "MSF2.eNVM", &s->nvm, 0, s->envm_size); memory_region_add_subregion(system_memory, ENVM_BASE_ADDRESS, &s->nvm); memory_region_add_subregion(system_memory, 0, &s->nvm_alias); memory_region_init_ram(&s->sram, NULL, "MSF2.eSRAM", s->esram_size, &error_fatal); memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, &s->sram); armv7m = DEVICE(&s->armv7m); qdev_prop_set_uint32(armv7m, "num-irq", 81); qdev_prop_set_string(armv7m, "cpu-type", ARM_CPU_TYPE_NAME("cortex-m3")); qdev_prop_set_bit(armv7m, "enable-bitband", true); qdev_connect_clock_in(armv7m, "cpuclk", s->m3clk); qdev_connect_clock_in(armv7m, "refclk", s->refclk); object_property_set_link(OBJECT(&s->armv7m), "memory", OBJECT(get_system_memory()), &error_abort); if (!sysbus_realize(SYS_BUS_DEVICE(&s->armv7m), errp)) { return; } for (i = 0; i < MSF2_NUM_UARTS; i++) { if (serial_hd(i)) { serial_mm_init(get_system_memory(), uart_addr[i], 2, qdev_get_gpio_in(armv7m, uart_irq[i]), 115200, serial_hd(i), DEVICE_NATIVE_ENDIAN); } } dev = DEVICE(&s->timer); /* * APB0 clock is the timer input clock. * TODO: ideally the MSF2 timer device should use a Clock rather than a * clock-frequency integer property. */ qdev_prop_set_uint32(dev, "clock-frequency", clock_get_hz(s->m3clk) / s->apb0div); if (!sysbus_realize(SYS_BUS_DEVICE(&s->timer), errp)) { return; } busdev = SYS_BUS_DEVICE(dev); sysbus_mmio_map(busdev, 0, MSF2_TIMER_BASE); sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, timer_irq[0])); sysbus_connect_irq(busdev, 1, qdev_get_gpio_in(armv7m, timer_irq[1])); dev = DEVICE(&s->sysreg); qdev_prop_set_uint32(dev, "apb0divisor", s->apb0div); qdev_prop_set_uint32(dev, "apb1divisor", s->apb1div); if (!sysbus_realize(SYS_BUS_DEVICE(&s->sysreg), errp)) { return; } busdev = SYS_BUS_DEVICE(dev); sysbus_mmio_map(busdev, 0, MSF2_SYSREG_BASE); for (i = 0; i < MSF2_NUM_SPIS; i++) { gchar *bus_name; if (!sysbus_realize(SYS_BUS_DEVICE(&s->spi[i]), errp)) { return; } sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi[i]), 0, spi_addr[i]); sysbus_connect_irq(SYS_BUS_DEVICE(&s->spi[i]), 0, qdev_get_gpio_in(armv7m, spi_irq[i])); /* Alias controller SPI bus to the SoC itself */ bus_name = g_strdup_printf("spi%d", i); object_property_add_alias(OBJECT(s), bus_name, OBJECT(&s->spi[i]), "spi"); g_free(bus_name); } dev = DEVICE(&s->emac); qemu_configure_nic_device(dev, true, NULL); object_property_set_link(OBJECT(&s->emac), "ahb-bus", OBJECT(get_system_memory()), &error_abort); if (!sysbus_realize(SYS_BUS_DEVICE(&s->emac), errp)) { return; } busdev = SYS_BUS_DEVICE(dev); sysbus_mmio_map(busdev, 0, MSF2_EMAC_BASE); sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, MSF2_EMAC_IRQ)); /* Below devices are not modelled yet. */ create_unimplemented_device("i2c_0", 0x40002000, 0x1000); create_unimplemented_device("dma", 0x40003000, 0x1000); create_unimplemented_device("watchdog", 0x40005000, 0x1000); create_unimplemented_device("i2c_1", 0x40012000, 0x1000); create_unimplemented_device("gpio", 0x40013000, 0x1000); create_unimplemented_device("hs-dma", 0x40014000, 0x1000); create_unimplemented_device("can", 0x40015000, 0x1000); create_unimplemented_device("rtc", 0x40017000, 0x1000); create_unimplemented_device("apb_config", 0x40020000, 0x10000); create_unimplemented_device("usb", 0x40043000, 0x1000); } static Property m2sxxx_soc_properties[] = { /* * part name specifies the type of SmartFusion2 device variant(this * property is for information purpose only. */ DEFINE_PROP_STRING("part-name", MSF2State, part_name), DEFINE_PROP_UINT64("eNVM-size", MSF2State, envm_size, MSF2_ENVM_MAX_SIZE), DEFINE_PROP_UINT64("eSRAM-size", MSF2State, esram_size, MSF2_ESRAM_MAX_SIZE), /* default divisors in Libero GUI */ DEFINE_PROP_UINT8("apb0div", MSF2State, apb0div, 2), DEFINE_PROP_UINT8("apb1div", MSF2State, apb1div, 2), DEFINE_PROP_END_OF_LIST(), }; static void m2sxxx_soc_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); dc->realize = m2sxxx_soc_realize; device_class_set_props(dc, m2sxxx_soc_properties); } static const TypeInfo m2sxxx_soc_info = { .name = TYPE_MSF2_SOC, .parent = TYPE_SYS_BUS_DEVICE, .instance_size = sizeof(MSF2State), .instance_init = m2sxxx_soc_initfn, .class_init = m2sxxx_soc_class_init, }; static void m2sxxx_soc_types(void) { type_register_static(&m2sxxx_soc_info); } type_init(m2sxxx_soc_types)