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