1 /* 2 * SmartFusion2 SoC emulation. 3 * 4 * Copyright (c) 2017-2020 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/arm/msf2-soc.h" 31 #include "hw/misc/unimp.h" 32 #include "hw/qdev-clock.h" 33 #include "sysemu/sysemu.h" 34 35 #define MSF2_TIMER_BASE 0x40004000 36 #define MSF2_SYSREG_BASE 0x40038000 37 #define MSF2_EMAC_BASE 0x40041000 38 39 #define ENVM_BASE_ADDRESS 0x60000000 40 41 #define SRAM_BASE_ADDRESS 0x20000000 42 43 #define MSF2_EMAC_IRQ 12 44 45 #define MSF2_ENVM_MAX_SIZE (512 * KiB) 46 47 /* 48 * eSRAM max size is 80k without SECDED(Single error correction and 49 * dual error detection) feature and 64k with SECDED. 50 * We do not support SECDED now. 51 */ 52 #define MSF2_ESRAM_MAX_SIZE (80 * KiB) 53 54 static const uint32_t spi_addr[MSF2_NUM_SPIS] = { 0x40001000 , 0x40011000 }; 55 static const uint32_t uart_addr[MSF2_NUM_UARTS] = { 0x40000000 , 0x40010000 }; 56 57 static const int spi_irq[MSF2_NUM_SPIS] = { 2, 3 }; 58 static const int uart_irq[MSF2_NUM_UARTS] = { 10, 11 }; 59 static const int timer_irq[MSF2_NUM_TIMERS] = { 14, 15 }; 60 61 static void m2sxxx_soc_initfn(Object *obj) 62 { 63 MSF2State *s = MSF2_SOC(obj); 64 int i; 65 66 object_initialize_child(obj, "armv7m", &s->armv7m, TYPE_ARMV7M); 67 68 object_initialize_child(obj, "sysreg", &s->sysreg, TYPE_MSF2_SYSREG); 69 70 object_initialize_child(obj, "timer", &s->timer, TYPE_MSS_TIMER); 71 72 for (i = 0; i < MSF2_NUM_SPIS; i++) { 73 object_initialize_child(obj, "spi[*]", &s->spi[i], TYPE_MSS_SPI); 74 } 75 76 object_initialize_child(obj, "emac", &s->emac, TYPE_MSS_EMAC); 77 78 s->m3clk = qdev_init_clock_in(DEVICE(obj), "m3clk", NULL, NULL, 0); 79 s->refclk = qdev_init_clock_in(DEVICE(obj), "refclk", NULL, NULL, 0); 80 } 81 82 static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp) 83 { 84 MSF2State *s = MSF2_SOC(dev_soc); 85 DeviceState *dev, *armv7m; 86 SysBusDevice *busdev; 87 int i; 88 89 MemoryRegion *system_memory = get_system_memory(); 90 91 if (!clock_has_source(s->m3clk)) { 92 error_setg(errp, "m3clk must be wired up by the board code"); 93 return; 94 } 95 96 /* 97 * We use s->refclk internally and only define it with qdev_init_clock_in() 98 * so it is correctly parented and not leaked on an init/deinit; it is not 99 * intended as an externally exposed clock. 100 */ 101 if (clock_has_source(s->refclk)) { 102 error_setg(errp, "refclk must not be wired up by the board code"); 103 return; 104 } 105 106 /* 107 * TODO: ideally we should model the SoC SYSTICK_CR register at 0xe0042038, 108 * which allows the guest to program the divisor between the m3clk and 109 * the systick refclk to either /4, /8, /16 or /32, as well as setting 110 * the value the guest can read in the STCALIB register. Currently we 111 * implement the divisor as a fixed /32, which matches the reset value 112 * of SYSTICK_CR. 113 */ 114 clock_set_mul_div(s->refclk, 32, 1); 115 clock_set_source(s->refclk, s->m3clk); 116 117 memory_region_init_rom(&s->nvm, OBJECT(dev_soc), "MSF2.eNVM", s->envm_size, 118 &error_fatal); 119 /* 120 * On power-on, the eNVM region 0x60000000 is automatically 121 * remapped to the Cortex-M3 processor executable region 122 * start address (0x0). We do not support remapping other eNVM, 123 * eSRAM and DDR regions by guest(via Sysreg) currently. 124 */ 125 memory_region_init_alias(&s->nvm_alias, OBJECT(dev_soc), "MSF2.eNVM", 126 &s->nvm, 0, s->envm_size); 127 128 memory_region_add_subregion(system_memory, ENVM_BASE_ADDRESS, &s->nvm); 129 memory_region_add_subregion(system_memory, 0, &s->nvm_alias); 130 131 memory_region_init_ram(&s->sram, NULL, "MSF2.eSRAM", s->esram_size, 132 &error_fatal); 133 memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, &s->sram); 134 135 armv7m = DEVICE(&s->armv7m); 136 qdev_prop_set_uint32(armv7m, "num-irq", 81); 137 qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type); 138 qdev_prop_set_bit(armv7m, "enable-bitband", true); 139 qdev_connect_clock_in(armv7m, "cpuclk", s->m3clk); 140 qdev_connect_clock_in(armv7m, "refclk", s->refclk); 141 object_property_set_link(OBJECT(&s->armv7m), "memory", 142 OBJECT(get_system_memory()), &error_abort); 143 if (!sysbus_realize(SYS_BUS_DEVICE(&s->armv7m), errp)) { 144 return; 145 } 146 147 for (i = 0; i < MSF2_NUM_UARTS; i++) { 148 if (serial_hd(i)) { 149 serial_mm_init(get_system_memory(), uart_addr[i], 2, 150 qdev_get_gpio_in(armv7m, uart_irq[i]), 151 115200, serial_hd(i), DEVICE_NATIVE_ENDIAN); 152 } 153 } 154 155 dev = DEVICE(&s->timer); 156 /* 157 * APB0 clock is the timer input clock. 158 * TODO: ideally the MSF2 timer device should use a Clock rather than a 159 * clock-frequency integer property. 160 */ 161 qdev_prop_set_uint32(dev, "clock-frequency", 162 clock_get_hz(s->m3clk) / s->apb0div); 163 if (!sysbus_realize(SYS_BUS_DEVICE(&s->timer), errp)) { 164 return; 165 } 166 busdev = SYS_BUS_DEVICE(dev); 167 sysbus_mmio_map(busdev, 0, MSF2_TIMER_BASE); 168 sysbus_connect_irq(busdev, 0, 169 qdev_get_gpio_in(armv7m, timer_irq[0])); 170 sysbus_connect_irq(busdev, 1, 171 qdev_get_gpio_in(armv7m, timer_irq[1])); 172 173 dev = DEVICE(&s->sysreg); 174 qdev_prop_set_uint32(dev, "apb0divisor", s->apb0div); 175 qdev_prop_set_uint32(dev, "apb1divisor", s->apb1div); 176 if (!sysbus_realize(SYS_BUS_DEVICE(&s->sysreg), errp)) { 177 return; 178 } 179 busdev = SYS_BUS_DEVICE(dev); 180 sysbus_mmio_map(busdev, 0, MSF2_SYSREG_BASE); 181 182 for (i = 0; i < MSF2_NUM_SPIS; i++) { 183 gchar *bus_name; 184 185 if (!sysbus_realize(SYS_BUS_DEVICE(&s->spi[i]), errp)) { 186 return; 187 } 188 189 sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi[i]), 0, spi_addr[i]); 190 sysbus_connect_irq(SYS_BUS_DEVICE(&s->spi[i]), 0, 191 qdev_get_gpio_in(armv7m, spi_irq[i])); 192 193 /* Alias controller SPI bus to the SoC itself */ 194 bus_name = g_strdup_printf("spi%d", i); 195 object_property_add_alias(OBJECT(s), bus_name, 196 OBJECT(&s->spi[i]), "spi"); 197 g_free(bus_name); 198 } 199 200 /* FIXME use qdev NIC properties instead of nd_table[] */ 201 if (nd_table[0].used) { 202 qemu_check_nic_model(&nd_table[0], TYPE_MSS_EMAC); 203 qdev_set_nic_properties(DEVICE(&s->emac), &nd_table[0]); 204 } 205 dev = DEVICE(&s->emac); 206 object_property_set_link(OBJECT(&s->emac), "ahb-bus", 207 OBJECT(get_system_memory()), &error_abort); 208 if (!sysbus_realize(SYS_BUS_DEVICE(&s->emac), errp)) { 209 return; 210 } 211 busdev = SYS_BUS_DEVICE(dev); 212 sysbus_mmio_map(busdev, 0, MSF2_EMAC_BASE); 213 sysbus_connect_irq(busdev, 0, 214 qdev_get_gpio_in(armv7m, MSF2_EMAC_IRQ)); 215 216 /* Below devices are not modelled yet. */ 217 create_unimplemented_device("i2c_0", 0x40002000, 0x1000); 218 create_unimplemented_device("dma", 0x40003000, 0x1000); 219 create_unimplemented_device("watchdog", 0x40005000, 0x1000); 220 create_unimplemented_device("i2c_1", 0x40012000, 0x1000); 221 create_unimplemented_device("gpio", 0x40013000, 0x1000); 222 create_unimplemented_device("hs-dma", 0x40014000, 0x1000); 223 create_unimplemented_device("can", 0x40015000, 0x1000); 224 create_unimplemented_device("rtc", 0x40017000, 0x1000); 225 create_unimplemented_device("apb_config", 0x40020000, 0x10000); 226 create_unimplemented_device("usb", 0x40043000, 0x1000); 227 } 228 229 static Property m2sxxx_soc_properties[] = { 230 /* 231 * part name specifies the type of SmartFusion2 device variant(this 232 * property is for information purpose only. 233 */ 234 DEFINE_PROP_STRING("cpu-type", MSF2State, cpu_type), 235 DEFINE_PROP_STRING("part-name", MSF2State, part_name), 236 DEFINE_PROP_UINT64("eNVM-size", MSF2State, envm_size, MSF2_ENVM_MAX_SIZE), 237 DEFINE_PROP_UINT64("eSRAM-size", MSF2State, esram_size, 238 MSF2_ESRAM_MAX_SIZE), 239 /* default divisors in Libero GUI */ 240 DEFINE_PROP_UINT8("apb0div", MSF2State, apb0div, 2), 241 DEFINE_PROP_UINT8("apb1div", MSF2State, apb1div, 2), 242 DEFINE_PROP_END_OF_LIST(), 243 }; 244 245 static void m2sxxx_soc_class_init(ObjectClass *klass, void *data) 246 { 247 DeviceClass *dc = DEVICE_CLASS(klass); 248 249 dc->realize = m2sxxx_soc_realize; 250 device_class_set_props(dc, m2sxxx_soc_properties); 251 } 252 253 static const TypeInfo m2sxxx_soc_info = { 254 .name = TYPE_MSF2_SOC, 255 .parent = TYPE_SYS_BUS_DEVICE, 256 .instance_size = sizeof(MSF2State), 257 .instance_init = m2sxxx_soc_initfn, 258 .class_init = m2sxxx_soc_class_init, 259 }; 260 261 static void m2sxxx_soc_types(void) 262 { 263 type_register_static(&m2sxxx_soc_info); 264 } 265 266 type_init(m2sxxx_soc_types) 267