hw/arm/ast2400.c

   1 /*
   2  * AST2400 SoC
   3  *
   4  * Andrew Jeffery <[email protected]>
   5  * Jeremy Kerr <[email protected]>
   6  *
   7  * Copyright 2016 IBM Corp.
   8  *
   9  * This code is licensed under the GPL version 2 or later.  See
  10  * the COPYING file in the top-level directory.
  11  */
  12
  13 #include "qemu/osdep.h"
  14 #include "qapi/error.h"
  15 #include "qemu-common.h"
  16 #include "cpu.h"
  17 #include "exec/address-spaces.h"
  18 #include "hw/arm/ast2400.h"
  19 #include "hw/char/serial.h"
  20 #include "qemu/log.h"
  21 #include "hw/i2c/aspeed_i2c.h"
  22
  23 #define AST2400_UART_5_BASE      0x00184000
  24 #define AST2400_IOMEM_SIZE       0x00200000
  25 #define AST2400_IOMEM_BASE       0x1E600000
  26 #define AST2400_SMC_BASE         AST2400_IOMEM_BASE /* Legacy SMC */
  27 #define AST2400_FMC_BASE         0X1E620000
  28 #define AST2400_SPI_BASE         0X1E630000
  29 #define AST2400_VIC_BASE         0x1E6C0000
  30 #define AST2400_SCU_BASE         0x1E6E2000
  31 #define AST2400_TIMER_BASE       0x1E782000
  32 #define AST2400_I2C_BASE         0x1E78A000
  33
  34 #define AST2400_FMC_FLASH_BASE   0x20000000
  35 #define AST2400_SPI_FLASH_BASE   0x30000000
  36
  37 #define AST2400_A0_SILICON_REV   0x02000303
  38
  39 static const int uart_irqs[] = { 9, 32, 33, 34, 10 };
  40 static const int timer_irqs[] = { 16, 17, 18, 35, 36, 37, 38, 39, };
  41
  42 /*
  43  * IO handlers: simply catch any reads/writes to IO addresses that aren't
  44  * handled by a device mapping.
  45  */
  46
  47 static uint64_t ast2400_io_read(void *p, hwaddr offset, unsigned size)
  48 {
  49     qemu_log_mask(LOG_UNIMP, "%s: 0x%" HWADDR_PRIx " [%u]\n",
  50                   __func__, offset, size);
  51     return 0;
  52 }
  53
  54 static void ast2400_io_write(void *opaque, hwaddr offset, uint64_t value,
  55                 unsigned size)
  56 {
  57     qemu_log_mask(LOG_UNIMP, "%s: 0x%" HWADDR_PRIx " <- 0x%" PRIx64 " [%u]\n",
  58                   __func__, offset, value, size);
  59 }
  60
  61 static const MemoryRegionOps ast2400_io_ops = {
  62     .read = ast2400_io_read,
  63     .write = ast2400_io_write,
  64     .endianness = DEVICE_LITTLE_ENDIAN,
  65 };
  66
  67 static void ast2400_init(Object *obj)
  68 {
  69     AST2400State *s = AST2400(obj);
  70
  71     s->cpu = cpu_arm_init("arm926");
  72
  73     object_initialize(&s->vic, sizeof(s->vic), TYPE_ASPEED_VIC);
  74     object_property_add_child(obj, "vic", OBJECT(&s->vic), NULL);
  75     qdev_set_parent_bus(DEVICE(&s->vic), sysbus_get_default());
  76
  77     object_initialize(&s->timerctrl, sizeof(s->timerctrl), TYPE_ASPEED_TIMER);
  78     object_property_add_child(obj, "timerctrl", OBJECT(&s->timerctrl), NULL);
  79     qdev_set_parent_bus(DEVICE(&s->timerctrl), sysbus_get_default());
  80
  81     object_initialize(&s->i2c, sizeof(s->i2c), TYPE_ASPEED_I2C);
  82     object_property_add_child(obj, "i2c", OBJECT(&s->i2c), NULL);
  83     qdev_set_parent_bus(DEVICE(&s->i2c), sysbus_get_default());
  84
  85     object_initialize(&s->scu, sizeof(s->scu), TYPE_ASPEED_SCU);
  86     object_property_add_child(obj, "scu", OBJECT(&s->scu), NULL);
  87     qdev_set_parent_bus(DEVICE(&s->scu), sysbus_get_default());
  88     qdev_prop_set_uint32(DEVICE(&s->scu), "silicon-rev",
  89                          AST2400_A0_SILICON_REV);
  90     object_property_add_alias(obj, "hw-strap1", OBJECT(&s->scu),
  91                               "hw-strap1", &error_abort);
  92     object_property_add_alias(obj, "hw-strap2", OBJECT(&s->scu),
  93                               "hw-strap2", &error_abort);
  94
  95     object_initialize(&s->smc, sizeof(s->smc), "aspeed.smc.fmc");
  96     object_property_add_child(obj, "smc", OBJECT(&s->smc), NULL);
  97     qdev_set_parent_bus(DEVICE(&s->smc), sysbus_get_default());
  98
  99     object_initialize(&s->spi, sizeof(s->spi), "aspeed.smc.spi");
 100     object_property_add_child(obj, "spi", OBJECT(&s->spi), NULL);
 101     qdev_set_parent_bus(DEVICE(&s->spi), sysbus_get_default());
 102 }
 103
 104 static void ast2400_realize(DeviceState *dev, Error **errp)
 105 {
 106     int i;
 107     AST2400State *s = AST2400(dev);
 108     Error *err = NULL, *local_err = NULL;
 109
 110     /* IO space */
 111     memory_region_init_io(&s->iomem, NULL, &ast2400_io_ops, NULL,
 112             "ast2400.io", AST2400_IOMEM_SIZE);
 113     memory_region_add_subregion_overlap(get_system_memory(), AST2400_IOMEM_BASE,
 114             &s->iomem, -1);
 115
 116     /* VIC */
 117     object_property_set_bool(OBJECT(&s->vic), true, "realized", &err);
 118     if (err) {
 119         error_propagate(errp, err);
 120         return;
 121     }
 122     sysbus_mmio_map(SYS_BUS_DEVICE(&s->vic), 0, AST2400_VIC_BASE);
 123     sysbus_connect_irq(SYS_BUS_DEVICE(&s->vic), 0,
 124                        qdev_get_gpio_in(DEVICE(s->cpu), ARM_CPU_IRQ));
 125     sysbus_connect_irq(SYS_BUS_DEVICE(&s->vic), 1,
 126                        qdev_get_gpio_in(DEVICE(s->cpu), ARM_CPU_FIQ));
 127
 128     /* Timer */
 129     object_property_set_bool(OBJECT(&s->timerctrl), true, "realized", &err);
 130     if (err) {
 131         error_propagate(errp, err);
 132         return;
 133     }
 134     sysbus_mmio_map(SYS_BUS_DEVICE(&s->timerctrl), 0, AST2400_TIMER_BASE);
 135     for (i = 0; i < ARRAY_SIZE(timer_irqs); i++) {
 136         qemu_irq irq = qdev_get_gpio_in(DEVICE(&s->vic), timer_irqs[i]);
 137         sysbus_connect_irq(SYS_BUS_DEVICE(&s->timerctrl), i, irq);
 138     }
 139
 140     /* SCU */
 141     object_property_set_bool(OBJECT(&s->scu), true, "realized", &err);
 142     if (err) {
 143         error_propagate(errp, err);
 144         return;
 145     }
 146     sysbus_mmio_map(SYS_BUS_DEVICE(&s->scu), 0, AST2400_SCU_BASE);
 147
 148     /* UART - attach an 8250 to the IO space as our UART5 */
 149     if (serial_hds[0]) {
 150         qemu_irq uart5 = qdev_get_gpio_in(DEVICE(&s->vic), uart_irqs[4]);
 151         serial_mm_init(&s->iomem, AST2400_UART_5_BASE, 2,
 152                        uart5, 38400, serial_hds[0], DEVICE_LITTLE_ENDIAN);
 153     }
 154
 155     /* I2C */
 156     object_property_set_bool(OBJECT(&s->i2c), true, "realized", &err);
 157     if (err) {
 158         error_propagate(errp, err);
 159         return;
 160     }
 161     sysbus_mmio_map(SYS_BUS_DEVICE(&s->i2c), 0, AST2400_I2C_BASE);
 162     sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c), 0,
 163                        qdev_get_gpio_in(DEVICE(&s->vic), 12));
 164
 165     /* SMC */
 166     object_property_set_int(OBJECT(&s->smc), 1, "num-cs", &err);
 167     object_property_set_bool(OBJECT(&s->smc), true, "realized", &local_err);
 168     error_propagate(&err, local_err);
 169     if (err) {
 170         error_propagate(errp, err);
 171         return;
 172     }
 173     sysbus_mmio_map(SYS_BUS_DEVICE(&s->smc), 0, AST2400_FMC_BASE);
 174     sysbus_mmio_map(SYS_BUS_DEVICE(&s->smc), 1, AST2400_FMC_FLASH_BASE);
 175     sysbus_connect_irq(SYS_BUS_DEVICE(&s->smc), 0,
 176                        qdev_get_gpio_in(DEVICE(&s->vic), 19));
 177
 178     /* SPI */
 179     object_property_set_int(OBJECT(&s->spi), 1, "num-cs", &err);
 180     object_property_set_bool(OBJECT(&s->spi), true, "realized", &local_err);
 181     error_propagate(&err, local_err);
 182     if (err) {
 183         error_propagate(errp, err);
 184         return;
 185     }
 186     sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi), 0, AST2400_SPI_BASE);
 187     sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi), 1, AST2400_SPI_FLASH_BASE);
 188 }
 189
 190 static void ast2400_class_init(ObjectClass *oc, void *data)
 191 {
 192     DeviceClass *dc = DEVICE_CLASS(oc);
 193
 194     dc->realize = ast2400_realize;
 195
 196     /*
 197      * Reason: creates an ARM CPU, thus use after free(), see
 198      * arm_cpu_class_init()
 199      */
 200     dc->cannot_destroy_with_object_finalize_yet = true;
 201 }
 202
 203 static const TypeInfo ast2400_type_info = {
 204     .name = TYPE_AST2400,
 205     .parent = TYPE_SYS_BUS_DEVICE,
 206     .instance_size = sizeof(AST2400State),
 207     .instance_init = ast2400_init,
 208     .class_init = ast2400_class_init,
 209 };
 210
 211 static void ast2400_register_types(void)
 212 {
 213     type_register_static(&ast2400_type_info);
 214 }
 215
 216 type_init(ast2400_register_types)