1 /* 2 * Copyright (c) 2013 Jean-Christophe Dubois <jcd@tribudubois.net> 3 * 4 * i.MX31 SOC emulation. 5 * 6 * Based on hw/arm/fsl-imx31.c 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, but WITHOUT 14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16 * for more details. 17 * 18 * You should have received a copy of the GNU General Public License along 19 * with this program; if not, see <http://www.gnu.org/licenses/>. 20 */ 21 22 #include "qemu/osdep.h" 23 #include "qapi/error.h" 24 #include "hw/arm/fsl-imx31.h" 25 #include "sysemu/sysemu.h" 26 #include "exec/address-spaces.h" 27 #include "hw/qdev-properties.h" 28 #include "chardev/char.h" 29 30 static void fsl_imx31_init(Object *obj) 31 { 32 FslIMX31State *s = FSL_IMX31(obj); 33 int i; 34 35 object_initialize_child(obj, "cpu", &s->cpu, ARM_CPU_TYPE_NAME("arm1136")); 36 37 object_initialize_child(obj, "avic", &s->avic, TYPE_IMX_AVIC); 38 39 object_initialize_child(obj, "ccm", &s->ccm, TYPE_IMX31_CCM); 40 41 for (i = 0; i < FSL_IMX31_NUM_UARTS; i++) { 42 object_initialize_child(obj, "uart[*]", &s->uart[i], TYPE_IMX_SERIAL); 43 } 44 45 object_initialize_child(obj, "gpt", &s->gpt, TYPE_IMX31_GPT); 46 47 for (i = 0; i < FSL_IMX31_NUM_EPITS; i++) { 48 object_initialize_child(obj, "epit[*]", &s->epit[i], TYPE_IMX_EPIT); 49 } 50 51 for (i = 0; i < FSL_IMX31_NUM_I2CS; i++) { 52 object_initialize_child(obj, "i2c[*]", &s->i2c[i], TYPE_IMX_I2C); 53 } 54 55 for (i = 0; i < FSL_IMX31_NUM_GPIOS; i++) { 56 object_initialize_child(obj, "gpio[*]", &s->gpio[i], TYPE_IMX_GPIO); 57 } 58 59 object_initialize_child(obj, "wdt", &s->wdt, TYPE_IMX2_WDT); 60 } 61 62 static void fsl_imx31_realize(DeviceState *dev, Error **errp) 63 { 64 FslIMX31State *s = FSL_IMX31(dev); 65 uint16_t i; 66 Error *err = NULL; 67 68 if (!qdev_realize(DEVICE(&s->cpu), NULL, errp)) { 69 return; 70 } 71 72 if (!sysbus_realize(SYS_BUS_DEVICE(&s->avic), errp)) { 73 return; 74 } 75 sysbus_mmio_map(SYS_BUS_DEVICE(&s->avic), 0, FSL_IMX31_AVIC_ADDR); 76 sysbus_connect_irq(SYS_BUS_DEVICE(&s->avic), 0, 77 qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_IRQ)); 78 sysbus_connect_irq(SYS_BUS_DEVICE(&s->avic), 1, 79 qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_FIQ)); 80 81 if (!sysbus_realize(SYS_BUS_DEVICE(&s->ccm), errp)) { 82 return; 83 } 84 sysbus_mmio_map(SYS_BUS_DEVICE(&s->ccm), 0, FSL_IMX31_CCM_ADDR); 85 86 /* Initialize all UARTS */ 87 for (i = 0; i < FSL_IMX31_NUM_UARTS; i++) { 88 static const struct { 89 hwaddr addr; 90 unsigned int irq; 91 } serial_table[FSL_IMX31_NUM_UARTS] = { 92 { FSL_IMX31_UART1_ADDR, FSL_IMX31_UART1_IRQ }, 93 { FSL_IMX31_UART2_ADDR, FSL_IMX31_UART2_IRQ }, 94 }; 95 96 qdev_prop_set_chr(DEVICE(&s->uart[i]), "chardev", serial_hd(i)); 97 98 if (!sysbus_realize(SYS_BUS_DEVICE(&s->uart[i]), errp)) { 99 return; 100 } 101 102 sysbus_mmio_map(SYS_BUS_DEVICE(&s->uart[i]), 0, serial_table[i].addr); 103 sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart[i]), 0, 104 qdev_get_gpio_in(DEVICE(&s->avic), 105 serial_table[i].irq)); 106 } 107 108 s->gpt.ccm = IMX_CCM(&s->ccm); 109 110 if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpt), errp)) { 111 return; 112 } 113 114 sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpt), 0, FSL_IMX31_GPT_ADDR); 115 sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpt), 0, 116 qdev_get_gpio_in(DEVICE(&s->avic), FSL_IMX31_GPT_IRQ)); 117 118 /* Initialize all EPIT timers */ 119 for (i = 0; i < FSL_IMX31_NUM_EPITS; i++) { 120 static const struct { 121 hwaddr addr; 122 unsigned int irq; 123 } epit_table[FSL_IMX31_NUM_EPITS] = { 124 { FSL_IMX31_EPIT1_ADDR, FSL_IMX31_EPIT1_IRQ }, 125 { FSL_IMX31_EPIT2_ADDR, FSL_IMX31_EPIT2_IRQ }, 126 }; 127 128 s->epit[i].ccm = IMX_CCM(&s->ccm); 129 130 if (!sysbus_realize(SYS_BUS_DEVICE(&s->epit[i]), errp)) { 131 return; 132 } 133 134 sysbus_mmio_map(SYS_BUS_DEVICE(&s->epit[i]), 0, epit_table[i].addr); 135 sysbus_connect_irq(SYS_BUS_DEVICE(&s->epit[i]), 0, 136 qdev_get_gpio_in(DEVICE(&s->avic), 137 epit_table[i].irq)); 138 } 139 140 /* Initialize all I2C */ 141 for (i = 0; i < FSL_IMX31_NUM_I2CS; i++) { 142 static const struct { 143 hwaddr addr; 144 unsigned int irq; 145 } i2c_table[FSL_IMX31_NUM_I2CS] = { 146 { FSL_IMX31_I2C1_ADDR, FSL_IMX31_I2C1_IRQ }, 147 { FSL_IMX31_I2C2_ADDR, FSL_IMX31_I2C2_IRQ }, 148 { FSL_IMX31_I2C3_ADDR, FSL_IMX31_I2C3_IRQ } 149 }; 150 151 /* Initialize the I2C */ 152 if (!sysbus_realize(SYS_BUS_DEVICE(&s->i2c[i]), errp)) { 153 return; 154 } 155 /* Map I2C memory */ 156 sysbus_mmio_map(SYS_BUS_DEVICE(&s->i2c[i]), 0, i2c_table[i].addr); 157 /* Connect I2C IRQ to PIC */ 158 sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c[i]), 0, 159 qdev_get_gpio_in(DEVICE(&s->avic), 160 i2c_table[i].irq)); 161 } 162 163 /* Initialize all GPIOs */ 164 for (i = 0; i < FSL_IMX31_NUM_GPIOS; i++) { 165 static const struct { 166 hwaddr addr; 167 unsigned int irq; 168 } gpio_table[FSL_IMX31_NUM_GPIOS] = { 169 { FSL_IMX31_GPIO1_ADDR, FSL_IMX31_GPIO1_IRQ }, 170 { FSL_IMX31_GPIO2_ADDR, FSL_IMX31_GPIO2_IRQ }, 171 { FSL_IMX31_GPIO3_ADDR, FSL_IMX31_GPIO3_IRQ } 172 }; 173 174 object_property_set_bool(OBJECT(&s->gpio[i]), "has-edge-sel", false, 175 &error_abort); 176 if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpio[i]), errp)) { 177 return; 178 } 179 sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio[i]), 0, gpio_table[i].addr); 180 /* Connect GPIO IRQ to PIC */ 181 sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio[i]), 0, 182 qdev_get_gpio_in(DEVICE(&s->avic), 183 gpio_table[i].irq)); 184 } 185 186 /* Watchdog */ 187 sysbus_realize(SYS_BUS_DEVICE(&s->wdt), &error_abort); 188 sysbus_mmio_map(SYS_BUS_DEVICE(&s->wdt), 0, FSL_IMX31_WDT_ADDR); 189 190 /* On a real system, the first 16k is a `secure boot rom' */ 191 memory_region_init_rom(&s->secure_rom, OBJECT(dev), "imx31.secure_rom", 192 FSL_IMX31_SECURE_ROM_SIZE, &err); 193 if (err) { 194 error_propagate(errp, err); 195 return; 196 } 197 memory_region_add_subregion(get_system_memory(), FSL_IMX31_SECURE_ROM_ADDR, 198 &s->secure_rom); 199 200 /* There is also a 16k ROM */ 201 memory_region_init_rom(&s->rom, OBJECT(dev), "imx31.rom", 202 FSL_IMX31_ROM_SIZE, &err); 203 if (err) { 204 error_propagate(errp, err); 205 return; 206 } 207 memory_region_add_subregion(get_system_memory(), FSL_IMX31_ROM_ADDR, 208 &s->rom); 209 210 /* initialize internal RAM (16 KB) */ 211 memory_region_init_ram(&s->iram, NULL, "imx31.iram", FSL_IMX31_IRAM_SIZE, 212 &err); 213 if (err) { 214 error_propagate(errp, err); 215 return; 216 } 217 memory_region_add_subregion(get_system_memory(), FSL_IMX31_IRAM_ADDR, 218 &s->iram); 219 220 /* internal RAM (16 KB) is aliased over 256 MB - 16 KB */ 221 memory_region_init_alias(&s->iram_alias, OBJECT(dev), "imx31.iram_alias", 222 &s->iram, 0, FSL_IMX31_IRAM_ALIAS_SIZE); 223 memory_region_add_subregion(get_system_memory(), FSL_IMX31_IRAM_ALIAS_ADDR, 224 &s->iram_alias); 225 } 226 227 static void fsl_imx31_class_init(ObjectClass *oc, void *data) 228 { 229 DeviceClass *dc = DEVICE_CLASS(oc); 230 231 dc->realize = fsl_imx31_realize; 232 dc->desc = "i.MX31 SOC"; 233 /* 234 * Reason: uses serial_hds in realize and the kzm board does not 235 * support multiple CPUs 236 */ 237 dc->user_creatable = false; 238 } 239 240 static const TypeInfo fsl_imx31_type_info = { 241 .name = TYPE_FSL_IMX31, 242 .parent = TYPE_DEVICE, 243 .instance_size = sizeof(FslIMX31State), 244 .instance_init = fsl_imx31_init, 245 .class_init = fsl_imx31_class_init, 246 }; 247 248 static void fsl_imx31_register_types(void) 249 { 250 type_register_static(&fsl_imx31_type_info); 251 } 252 253 type_init(fsl_imx31_register_types) 254