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arm: xlnx-zynqmp: Add GIC

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Add the GIC and connect IRQ outputs to the CPUs. The GIC regions are
under-decoded through a 64k address region so implement aliases
accordingly.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 5853189965728d676106d9e94e76b9bb87981cb5.1431381507.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Crosthwaite 2015-05-14 19:23:01 -07:00 committed by Peter Maydell
parent f0a902f764
commit 7729e1f4b3
2 changed files with 73 additions and 0 deletions
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59
hw/arm/xlnx-zynqmp.c
View File

@ -16,6 +16,23 @@
*/
#include "hw/arm/xlnx-zynqmp.h"
#include "exec/address-spaces.h"
#define GIC_NUM_SPI_INTR 160
#define GIC_BASE_ADDR 0xf9000000
#define GIC_DIST_ADDR 0xf9010000
#define GIC_CPU_ADDR 0xf9020000
typedef struct XlnxZynqMPGICRegion {
int region_index;
uint32_t address;
} XlnxZynqMPGICRegion;
static const XlnxZynqMPGICRegion xlnx_zynqmp_gic_regions[] = {
{ .region_index = 0, .address = GIC_DIST_ADDR, },
{ .region_index = 1, .address = GIC_CPU_ADDR, },
};
static void xlnx_zynqmp_init(Object *obj)
{
@ -28,14 +45,46 @@ static void xlnx_zynqmp_init(Object *obj)
object_property_add_child(obj, "cpu[*]", OBJECT(&s->cpu[i]),
&error_abort);
}
object_initialize(&s->gic, sizeof(s->gic), TYPE_ARM_GIC);
qdev_set_parent_bus(DEVICE(&s->gic), sysbus_get_default());
}
static void xlnx_zynqmp_realize(DeviceState *dev, Error **errp)
{
XlnxZynqMPState *s = XLNX_ZYNQMP(dev);
MemoryRegion *system_memory = get_system_memory();
uint8_t i;
Error *err = NULL;
qdev_prop_set_uint32(DEVICE(&s->gic), "num-irq", GIC_NUM_SPI_INTR + 32);
qdev_prop_set_uint32(DEVICE(&s->gic), "revision", 2);
qdev_prop_set_uint32(DEVICE(&s->gic), "num-cpu", XLNX_ZYNQMP_NUM_CPUS);
object_property_set_bool(OBJECT(&s->gic), true, "realized", &err);
if (err) {
error_propagate((errp), (err));
return;
}
assert(ARRAY_SIZE(xlnx_zynqmp_gic_regions) == XLNX_ZYNQMP_GIC_REGIONS);
for (i = 0; i < XLNX_ZYNQMP_GIC_REGIONS; i++) {
SysBusDevice *gic = SYS_BUS_DEVICE(&s->gic);
const XlnxZynqMPGICRegion *r = &xlnx_zynqmp_gic_regions[i];
MemoryRegion *mr = sysbus_mmio_get_region(gic, r->region_index);
uint32_t addr = r->address;
int j;
sysbus_mmio_map(gic, r->region_index, addr);
for (j = 0; j < XLNX_ZYNQMP_GIC_ALIASES; j++) {
MemoryRegion *alias = &s->gic_mr[i][j];
addr += XLNX_ZYNQMP_GIC_REGION_SIZE;
memory_region_init_alias(alias, OBJECT(s), "zynqmp-gic-alias", mr,
0, XLNX_ZYNQMP_GIC_REGION_SIZE);
memory_region_add_subregion(system_memory, addr, alias);
}
}
for (i = 0; i < XLNX_ZYNQMP_NUM_CPUS; i++) {
object_property_set_int(OBJECT(&s->cpu[i]), QEMU_PSCI_CONDUIT_SMC,
"psci-conduit", &error_abort);
@ -45,11 +94,21 @@ static void xlnx_zynqmp_realize(DeviceState *dev, Error **errp)
"start-powered-off", &error_abort);
}
object_property_set_int(OBJECT(&s->cpu[i]), GIC_BASE_ADDR,
"reset-cbar", &err);
if (err) {
error_propagate((errp), (err));
return;
}
object_property_set_bool(OBJECT(&s->cpu[i]), true, "realized", &err);
if (err) {
error_propagate((errp), (err));
return;
}
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), i,
qdev_get_gpio_in(DEVICE(&s->cpu[i]), ARM_CPU_IRQ));
}
}

14
include/hw/arm/xlnx-zynqmp.h
View File

@ -19,6 +19,7 @@
#include "qemu-common.h"
#include "hw/arm/arm.h"
#include "hw/intc/arm_gic.h"
#define TYPE_XLNX_ZYNQMP "xlnx,zynqmp"
#define XLNX_ZYNQMP(obj) OBJECT_CHECK(XlnxZynqMPState, (obj), \
@ -26,12 +27,25 @@
#define XLNX_ZYNQMP_NUM_CPUS 4
#define XLNX_ZYNQMP_GIC_REGIONS 2
/* ZynqMP maps the ARM GIC regions (GICC, GICD ...) at consecutive 64k offsets
* and under-decodes the 64k region. This mirrors the 4k regions to every 4k
* aligned address in the 64k region. To implement each GIC region needs a
* number of memory region aliases.
*/
#define XLNX_ZYNQMP_GIC_REGION_SIZE 0x4000
#define XLNX_ZYNQMP_GIC_ALIASES (0x10000 / XLNX_ZYNQMP_GIC_REGION_SIZE - 1)
typedef struct XlnxZynqMPState {
/*< private >*/
DeviceState parent_obj;
/*< public >*/
ARMCPU cpu[XLNX_ZYNQMP_NUM_CPUS];
GICState gic;
MemoryRegion gic_mr[XLNX_ZYNQMP_GIC_REGIONS][XLNX_ZYNQMP_GIC_ALIASES];
} XlnxZynqMPState;
#define XLNX_ZYNQMP_H