hw/arm/ast2400.c

   1 /*
   2  * AST2400 SoC
   3  *
   4  * Andrew Jeffery <andrew@aj.id.au>
   5  * Jeremy Kerr <jk@ozlabs.org>
   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_SDMC_BASE        0x1E6E0000
  31 #define AST2400_SCU_BASE         0x1E6E2000
  32 #define AST2400_TIMER_BASE       0x1E782000
  33 #define AST2400_I2C_BASE         0x1E78A000
  34
  35 #define AST2400_FMC_FLASH_BASE   0x20000000
  36 #define AST2400_SPI_FLASH_BASE   0x30000000
  37
  38 static const int uart_irqs[] = { 9, 32, 33, 34, 10 };
  39 static const int timer_irqs[] = { 16, 17, 18, 35, 36, 37, 38, 39, };
  40
  41 /*
  42  * IO handlers: simply catch any reads/writes to IO addresses that aren't
  43  * handled by a device mapping.
  44  */
  45
  46 static uint64_t ast2400_io_read(void *p, hwaddr offset, unsigned size)
  47 {
  48     qemu_log_mask(LOG_UNIMP, "%s: 0x%" HWADDR_PRIx " [%u]\n",
  49                   __func__, offset, size);
  50     return 0;
  51 }
  52
  53 static void ast2400_io_write(void *opaque, hwaddr offset, uint64_t value,
  54                 unsigned size)
  55 {
  56     qemu_log_mask(LOG_UNIMP, "%s: 0x%" HWADDR_PRIx " <- 0x%" PRIx64 " [%u]\n",
  57                   __func__, offset, value, size);
  58 }
  59
  60 static const MemoryRegionOps ast2400_io_ops = {
  61     .read = ast2400_io_read,
  62     .write = ast2400_io_write,
  63     .endianness = DEVICE_LITTLE_ENDIAN,
  64 };
  65
  66 static void ast2400_init(Object *obj)
  67 {
  68     AST2400State *s = AST2400(obj);
  69
  70     s->cpu = cpu_arm_init("arm926");
  71
  72     object_initialize(&s->vic, sizeof(s->vic), TYPE_ASPEED_VIC);
  73     object_property_add_child(obj, "vic", OBJECT(&s->vic), NULL);
  74     qdev_set_parent_bus(DEVICE(&s->vic), sysbus_get_default());
  75
  76     object_initialize(&s->timerctrl, sizeof(s->timerctrl), TYPE_ASPEED_TIMER);
  77     object_property_add_child(obj, "timerctrl", OBJECT(&s->timerctrl), NULL);
  78     qdev_set_parent_bus(DEVICE(&s->timerctrl), sysbus_get_default());
  79
  80     object_initialize(&s->i2c, sizeof(s->i2c), TYPE_ASPEED_I2C);
  81     object_property_add_child(obj, "i2c", OBJECT(&s->i2c), NULL);
  82     qdev_set_parent_bus(DEVICE(&s->i2c), sysbus_get_default());
  83
  84     object_initialize(&s->scu, sizeof(s->scu), TYPE_ASPEED_SCU);
  85     object_property_add_child(obj, "scu", OBJECT(&s->scu), NULL);
  86     qdev_set_parent_bus(DEVICE(&s->scu), sysbus_get_default());
  87     qdev_prop_set_uint32(DEVICE(&s->scu), "silicon-rev",
  88                          AST2400_A0_SILICON_REV);
  89     object_property_add_alias(obj, "hw-strap1", OBJECT(&s->scu),
  90                               "hw-strap1", &error_abort);
  91     object_property_add_alias(obj, "hw-strap2", OBJECT(&s->scu),
  92                               "hw-strap2", &error_abort);
  93
  94     object_initialize(&s->smc, sizeof(s->smc), "aspeed.smc.fmc");
  95     object_property_add_child(obj, "smc", OBJECT(&s->smc), NULL);
  96     qdev_set_parent_bus(DEVICE(&s->smc), sysbus_get_default());
  97
  98     object_initialize(&s->spi, sizeof(s->spi), "aspeed.smc.spi");
  99     object_property_add_child(obj, "spi", OBJECT(&s->spi), NULL);
 100     qdev_set_parent_bus(DEVICE(&s->spi), sysbus_get_default());
 101
 102     object_initialize(&s->sdmc, sizeof(s->sdmc), TYPE_ASPEED_SDMC);
 103     object_property_add_child(obj, "sdmc", OBJECT(&s->sdmc), NULL);
 104     qdev_set_parent_bus(DEVICE(&s->sdmc), sysbus_get_default());
 105     qdev_prop_set_uint32(DEVICE(&s->sdmc), "silicon-rev",
 106                          AST2400_A0_SILICON_REV);
 107 }
 108
 109 static void ast2400_realize(DeviceState *dev, Error **errp)
 110 {
 111     int i;
 112     AST2400State *s = AST2400(dev);
 113     Error *err = NULL, *local_err = NULL;
 114
 115     /* IO space */
 116     memory_region_init_io(&s->iomem, NULL, &ast2400_io_ops, NULL,
 117             "ast2400.io", AST2400_IOMEM_SIZE);
 118     memory_region_add_subregion_overlap(get_system_memory(), AST2400_IOMEM_BASE,
 119             &s->iomem, -1);
 120
 121     /* VIC */
 122     object_property_set_bool(OBJECT(&s->vic), true, "realized", &err);
 123     if (err) {
 124         error_propagate(errp, err);
 125         return;
 126     }
 127     sysbus_mmio_map(SYS_BUS_DEVICE(&s->vic), 0, AST2400_VIC_BASE);
 128     sysbus_connect_irq(SYS_BUS_DEVICE(&s->vic), 0,
 129                        qdev_get_gpio_in(DEVICE(s->cpu), ARM_CPU_IRQ));
 130     sysbus_connect_irq(SYS_BUS_DEVICE(&s->vic), 1,
 131                        qdev_get_gpio_in(DEVICE(s->cpu), ARM_CPU_FIQ));
 132
 133     /* Timer */
 134     object_property_set_bool(OBJECT(&s->timerctrl), true, "realized", &err);
 135     if (err) {
 136         error_propagate(errp, err);
 137         return;
 138     }
 139     sysbus_mmio_map(SYS_BUS_DEVICE(&s->timerctrl), 0, AST2400_TIMER_BASE);
 140     for (i = 0; i < ARRAY_SIZE(timer_irqs); i++) {
 141         qemu_irq irq = qdev_get_gpio_in(DEVICE(&s->vic), timer_irqs[i]);
 142         sysbus_connect_irq(SYS_BUS_DEVICE(&s->timerctrl), i, irq);
 143     }
 144
 145     /* SCU */
 146     object_property_set_bool(OBJECT(&s->scu), true, "realized", &err);
 147     if (err) {
 148         error_propagate(errp, err);
 149         return;
 150     }
 151     sysbus_mmio_map(SYS_BUS_DEVICE(&s->scu), 0, AST2400_SCU_BASE);
 152
 153     /* UART - attach an 8250 to the IO space as our UART5 */
 154     if (serial_hds[0]) {
 155         qemu_irq uart5 = qdev_get_gpio_in(DEVICE(&s->vic), uart_irqs[4]);
 156         serial_mm_init(&s->iomem, AST2400_UART_5_BASE, 2,
 157                        uart5, 38400, serial_hds[0], DEVICE_LITTLE_ENDIAN);
 158     }
 159
 160     /* I2C */
 161     object_property_set_bool(OBJECT(&s->i2c), true, "realized", &err);
 162     if (err) {
 163         error_propagate(errp, err);
 164         return;
 165     }
 166     sysbus_mmio_map(SYS_BUS_DEVICE(&s->i2c), 0, AST2400_I2C_BASE);
 167     sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c), 0,
 168                        qdev_get_gpio_in(DEVICE(&s->vic), 12));
 169
 170     /* SMC */
 171     object_property_set_int(OBJECT(&s->smc), 1, "num-cs", &err);
 172     object_property_set_bool(OBJECT(&s->smc), true, "realized", &local_err);
 173     error_propagate(&err, local_err);
 174     if (err) {
 175         error_propagate(errp, err);
 176         return;
 177     }
 178     sysbus_mmio_map(SYS_BUS_DEVICE(&s->smc), 0, AST2400_FMC_BASE);
 179     sysbus_mmio_map(SYS_BUS_DEVICE(&s->smc), 1, AST2400_FMC_FLASH_BASE);
 180     sysbus_connect_irq(SYS_BUS_DEVICE(&s->smc), 0,
 181                        qdev_get_gpio_in(DEVICE(&s->vic), 19));
 182
 183     /* SPI */
 184     object_property_set_int(OBJECT(&s->spi), 1, "num-cs", &err);
 185     object_property_set_bool(OBJECT(&s->spi), true, "realized", &local_err);
 186     error_propagate(&err, local_err);
 187     if (err) {
 188         error_propagate(errp, err);
 189         return;
 190     }
 191     sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi), 0, AST2400_SPI_BASE);
 192     sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi), 1, AST2400_SPI_FLASH_BASE);
 193
 194     /* SDMC - SDRAM Memory Controller */
 195     object_property_set_bool(OBJECT(&s->sdmc), true, "realized", &err);
 196     if (err) {
 197         error_propagate(errp, err);
 198         return;
 199     }
 200     sysbus_mmio_map(SYS_BUS_DEVICE(&s->sdmc), 0, AST2400_SDMC_BASE);
 201 }
 202
 203 static void ast2400_class_init(ObjectClass *oc, void *data)
 204 {
 205     DeviceClass *dc = DEVICE_CLASS(oc);
 206
 207     dc->realize = ast2400_realize;
 208
 209     /*
 210      * Reason: creates an ARM CPU, thus use after free(), see
 211      * arm_cpu_class_init()
 212      */
 213     dc->cannot_destroy_with_object_finalize_yet = true;
 214 }
 215
 216 static const TypeInfo ast2400_type_info = {
 217     .name = TYPE_AST2400,
 218     .parent = TYPE_SYS_BUS_DEVICE,
 219     .instance_size = sizeof(AST2400State),
 220     .instance_init = ast2400_init,
 221     .class_init = ast2400_class_init,
 222 };
 223
 224 static void ast2400_register_types(void)
 225 {
 226     type_register_static(&ast2400_type_info);
 227 }
 228
 229 type_init(ast2400_register_types)