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/*
* AST2400 SoC
*
* Andrew Jeffery <andrew@aj.id.au>
* Jeremy Kerr <jk@ozlabs.org>
*
* Copyright 2016 IBM Corp.
*
* This code is licensed under the GPL version 2 or later. See
* the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "exec/address-spaces.h"
#include "hw/arm/ast2400.h"
#include "hw/char/serial.h"
#define AST2400_UART_5_BASE 0x00184000
#define AST2400_IOMEM_SIZE 0x00200000
#define AST2400_IOMEM_BASE 0x1E600000
#define AST2400_VIC_BASE 0x1E6C0000
#define AST2400_TIMER_BASE 0x1E782000
static const int uart_irqs[] = { 9, 32, 33, 34, 10 };
static const int timer_irqs[] = { 16, 17, 18, 35, 36, 37, 38, 39, };
/*
* IO handlers: simply catch any reads/writes to IO addresses that aren't
* handled by a device mapping.
*/
static uint64_t ast2400_io_read(void *p, hwaddr offset, unsigned size)
{
qemu_log_mask(LOG_UNIMP, "%s: 0x%" HWADDR_PRIx " [%u]\n",
__func__, offset, size);
return 0;
}
static void ast2400_io_write(void *opaque, hwaddr offset, uint64_t value,
unsigned size)
{
qemu_log_mask(LOG_UNIMP, "%s: 0x%" HWADDR_PRIx " <- 0x%" PRIx64 " [%u]\n",
__func__, offset, value, size);
}
static const MemoryRegionOps ast2400_io_ops = {
.read = ast2400_io_read,
.write = ast2400_io_write,
.endianness = DEVICE_LITTLE_ENDIAN,
};
static void ast2400_init(Object *obj)
{
AST2400State *s = AST2400(obj);
s->cpu = cpu_arm_init("arm926");
object_initialize(&s->vic, sizeof(s->vic), TYPE_ASPEED_VIC);
object_property_add_child(obj, "vic", OBJECT(&s->vic), NULL);
qdev_set_parent_bus(DEVICE(&s->vic), sysbus_get_default());
object_initialize(&s->timerctrl, sizeof(s->timerctrl), TYPE_ASPEED_TIMER);
object_property_add_child(obj, "timerctrl", OBJECT(&s->timerctrl), NULL);
qdev_set_parent_bus(DEVICE(&s->timerctrl), sysbus_get_default());
}
static void ast2400_realize(DeviceState *dev, Error **errp)
{
int i;
AST2400State *s = AST2400(dev);
Error *err = NULL;
/* IO space */
memory_region_init_io(&s->iomem, NULL, &ast2400_io_ops, NULL,
"ast2400.io", AST2400_IOMEM_SIZE);
memory_region_add_subregion_overlap(get_system_memory(), AST2400_IOMEM_BASE,
&s->iomem, -1);
/* VIC */
object_property_set_bool(OBJECT(&s->vic), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->vic), 0, AST2400_VIC_BASE);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->vic), 0,
qdev_get_gpio_in(DEVICE(s->cpu), ARM_CPU_IRQ));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->vic), 1,
qdev_get_gpio_in(DEVICE(s->cpu), ARM_CPU_FIQ));
/* Timer */
object_property_set_bool(OBJECT(&s->timerctrl), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->timerctrl), 0, AST2400_TIMER_BASE);
for (i = 0; i < ARRAY_SIZE(timer_irqs); i++) {
qemu_irq irq = qdev_get_gpio_in(DEVICE(&s->vic), timer_irqs[i]);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->timerctrl), i, irq);
}
/* UART - attach an 8250 to the IO space as our UART5 */
if (serial_hds[0]) {
qemu_irq uart5 = qdev_get_gpio_in(DEVICE(&s->vic), uart_irqs[4]);
serial_mm_init(&s->iomem, AST2400_UART_5_BASE, 2,
uart5, 38400, serial_hds[0], DEVICE_LITTLE_ENDIAN);
}
}
static void ast2400_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = ast2400_realize;
/*
* Reason: creates an ARM CPU, thus use after free(), see
* arm_cpu_class_init()
*/
dc->cannot_destroy_with_object_finalize_yet = true;
}
static const TypeInfo ast2400_type_info = {
.name = TYPE_AST2400,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(AST2400State),
.instance_init = ast2400_init,
.class_init = ast2400_class_init,
};
static void ast2400_register_types(void)
{
type_register_static(&ast2400_type_info);
}
type_init(ast2400_register_types)
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