1 /* 2 * SmartFusion2 SoC 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 "exec/address-spaces.h" 29 #include "hw/char/serial.h" 30 #include "hw/irq.h" 31 #include "hw/boards.h" 32 #include "hw/arm/msf2-soc.h" 33 #include "hw/misc/unimp.h" 34 35 #define MSF2_TIMER_BASE 0x40004000 36 #define MSF2_SYSREG_BASE 0x40038000 37 38 #define ENVM_BASE_ADDRESS 0x60000000 39 40 #define SRAM_BASE_ADDRESS 0x20000000 41 42 #define MSF2_ENVM_MAX_SIZE (512 * KiB) 43 44 /* 45 * eSRAM max size is 80k without SECDED(Single error correction and 46 * dual error detection) feature and 64k with SECDED. 47 * We do not support SECDED now. 48 */ 49 #define MSF2_ESRAM_MAX_SIZE (80 * KiB) 50 51 static const uint32_t spi_addr[MSF2_NUM_SPIS] = { 0x40001000 , 0x40011000 }; 52 static const uint32_t uart_addr[MSF2_NUM_UARTS] = { 0x40000000 , 0x40010000 }; 53 54 static const int spi_irq[MSF2_NUM_SPIS] = { 2, 3 }; 55 static const int uart_irq[MSF2_NUM_UARTS] = { 10, 11 }; 56 static const int timer_irq[MSF2_NUM_TIMERS] = { 14, 15 }; 57 58 static void do_sys_reset(void *opaque, int n, int level) 59 { 60 if (level) { 61 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 62 } 63 } 64 65 static void m2sxxx_soc_initfn(Object *obj) 66 { 67 MSF2State *s = MSF2_SOC(obj); 68 int i; 69 70 sysbus_init_child_obj(obj, "armv7m", &s->armv7m, sizeof(s->armv7m), 71 TYPE_ARMV7M); 72 73 sysbus_init_child_obj(obj, "sysreg", &s->sysreg, sizeof(s->sysreg), 74 TYPE_MSF2_SYSREG); 75 76 sysbus_init_child_obj(obj, "timer", &s->timer, sizeof(s->timer), 77 TYPE_MSS_TIMER); 78 79 for (i = 0; i < MSF2_NUM_SPIS; i++) { 80 sysbus_init_child_obj(obj, "spi[*]", &s->spi[i], sizeof(s->spi[i]), 81 TYPE_MSS_SPI); 82 } 83 } 84 85 static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp) 86 { 87 MSF2State *s = MSF2_SOC(dev_soc); 88 DeviceState *dev, *armv7m; 89 SysBusDevice *busdev; 90 Error *err = NULL; 91 int i; 92 93 MemoryRegion *system_memory = get_system_memory(); 94 MemoryRegion *nvm = g_new(MemoryRegion, 1); 95 MemoryRegion *nvm_alias = g_new(MemoryRegion, 1); 96 MemoryRegion *sram = g_new(MemoryRegion, 1); 97 98 memory_region_init_rom(nvm, NULL, "MSF2.eNVM", s->envm_size, 99 &error_fatal); 100 /* 101 * On power-on, the eNVM region 0x60000000 is automatically 102 * remapped to the Cortex-M3 processor executable region 103 * start address (0x0). We do not support remapping other eNVM, 104 * eSRAM and DDR regions by guest(via Sysreg) currently. 105 */ 106 memory_region_init_alias(nvm_alias, NULL, "MSF2.eNVM", 107 nvm, 0, s->envm_size); 108 109 memory_region_add_subregion(system_memory, ENVM_BASE_ADDRESS, nvm); 110 memory_region_add_subregion(system_memory, 0, nvm_alias); 111 112 memory_region_init_ram(sram, NULL, "MSF2.eSRAM", s->esram_size, 113 &error_fatal); 114 memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, sram); 115 116 armv7m = DEVICE(&s->armv7m); 117 qdev_prop_set_uint32(armv7m, "num-irq", 81); 118 qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type); 119 qdev_prop_set_bit(armv7m, "enable-bitband", true); 120 object_property_set_link(OBJECT(&s->armv7m), OBJECT(get_system_memory()), 121 "memory", &error_abort); 122 object_property_set_bool(OBJECT(&s->armv7m), true, "realized", &err); 123 if (err != NULL) { 124 error_propagate(errp, err); 125 return; 126 } 127 128 if (!s->m3clk) { 129 error_setg(errp, "Invalid m3clk value"); 130 error_append_hint(errp, "m3clk can not be zero\n"); 131 return; 132 } 133 134 qdev_connect_gpio_out_named(DEVICE(&s->armv7m.nvic), "SYSRESETREQ", 0, 135 qemu_allocate_irq(&do_sys_reset, NULL, 0)); 136 137 system_clock_scale = NANOSECONDS_PER_SECOND / s->m3clk; 138 139 for (i = 0; i < MSF2_NUM_UARTS; i++) { 140 if (serial_hd(i)) { 141 serial_mm_init(get_system_memory(), uart_addr[i], 2, 142 qdev_get_gpio_in(armv7m, uart_irq[i]), 143 115200, serial_hd(i), DEVICE_NATIVE_ENDIAN); 144 } 145 } 146 147 dev = DEVICE(&s->timer); 148 /* APB0 clock is the timer input clock */ 149 qdev_prop_set_uint32(dev, "clock-frequency", s->m3clk / s->apb0div); 150 object_property_set_bool(OBJECT(&s->timer), true, "realized", &err); 151 if (err != NULL) { 152 error_propagate(errp, err); 153 return; 154 } 155 busdev = SYS_BUS_DEVICE(dev); 156 sysbus_mmio_map(busdev, 0, MSF2_TIMER_BASE); 157 sysbus_connect_irq(busdev, 0, 158 qdev_get_gpio_in(armv7m, timer_irq[0])); 159 sysbus_connect_irq(busdev, 1, 160 qdev_get_gpio_in(armv7m, timer_irq[1])); 161 162 dev = DEVICE(&s->sysreg); 163 qdev_prop_set_uint32(dev, "apb0divisor", s->apb0div); 164 qdev_prop_set_uint32(dev, "apb1divisor", s->apb1div); 165 object_property_set_bool(OBJECT(&s->sysreg), true, "realized", &err); 166 if (err != NULL) { 167 error_propagate(errp, err); 168 return; 169 } 170 busdev = SYS_BUS_DEVICE(dev); 171 sysbus_mmio_map(busdev, 0, MSF2_SYSREG_BASE); 172 173 for (i = 0; i < MSF2_NUM_SPIS; i++) { 174 gchar *bus_name; 175 176 object_property_set_bool(OBJECT(&s->spi[i]), true, "realized", &err); 177 if (err != NULL) { 178 error_propagate(errp, err); 179 return; 180 } 181 182 sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi[i]), 0, spi_addr[i]); 183 sysbus_connect_irq(SYS_BUS_DEVICE(&s->spi[i]), 0, 184 qdev_get_gpio_in(armv7m, spi_irq[i])); 185 186 /* Alias controller SPI bus to the SoC itself */ 187 bus_name = g_strdup_printf("spi%d", i); 188 object_property_add_alias(OBJECT(s), bus_name, 189 OBJECT(&s->spi[i]), "spi", 190 &error_abort); 191 g_free(bus_name); 192 } 193 194 /* Below devices are not modelled yet. */ 195 create_unimplemented_device("i2c_0", 0x40002000, 0x1000); 196 create_unimplemented_device("dma", 0x40003000, 0x1000); 197 create_unimplemented_device("watchdog", 0x40005000, 0x1000); 198 create_unimplemented_device("i2c_1", 0x40012000, 0x1000); 199 create_unimplemented_device("gpio", 0x40013000, 0x1000); 200 create_unimplemented_device("hs-dma", 0x40014000, 0x1000); 201 create_unimplemented_device("can", 0x40015000, 0x1000); 202 create_unimplemented_device("rtc", 0x40017000, 0x1000); 203 create_unimplemented_device("apb_config", 0x40020000, 0x10000); 204 create_unimplemented_device("emac", 0x40041000, 0x1000); 205 create_unimplemented_device("usb", 0x40043000, 0x1000); 206 } 207 208 static Property m2sxxx_soc_properties[] = { 209 /* 210 * part name specifies the type of SmartFusion2 device variant(this 211 * property is for information purpose only. 212 */ 213 DEFINE_PROP_STRING("cpu-type", MSF2State, cpu_type), 214 DEFINE_PROP_STRING("part-name", MSF2State, part_name), 215 DEFINE_PROP_UINT64("eNVM-size", MSF2State, envm_size, MSF2_ENVM_MAX_SIZE), 216 DEFINE_PROP_UINT64("eSRAM-size", MSF2State, esram_size, 217 MSF2_ESRAM_MAX_SIZE), 218 /* Libero GUI shows 100Mhz as default for clocks */ 219 DEFINE_PROP_UINT32("m3clk", MSF2State, m3clk, 100 * 1000000), 220 /* default divisors in Libero GUI */ 221 DEFINE_PROP_UINT8("apb0div", MSF2State, apb0div, 2), 222 DEFINE_PROP_UINT8("apb1div", MSF2State, apb1div, 2), 223 DEFINE_PROP_END_OF_LIST(), 224 }; 225 226 static void m2sxxx_soc_class_init(ObjectClass *klass, void *data) 227 { 228 DeviceClass *dc = DEVICE_CLASS(klass); 229 230 dc->realize = m2sxxx_soc_realize; 231 dc->props = m2sxxx_soc_properties; 232 } 233 234 static const TypeInfo m2sxxx_soc_info = { 235 .name = TYPE_MSF2_SOC, 236 .parent = TYPE_SYS_BUS_DEVICE, 237 .instance_size = sizeof(MSF2State), 238 .instance_init = m2sxxx_soc_initfn, 239 .class_init = m2sxxx_soc_class_init, 240 }; 241 242 static void m2sxxx_soc_types(void) 243 { 244 type_register_static(&m2sxxx_soc_info); 245 } 246 247 type_init(m2sxxx_soc_types) 248