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xlnx-zynqmp: Make the RPU subsystem optional 

The way we currently model the RPU subsystem is of quite
limited use. In addition to that, it causes problems for
KVM and for GDB debugging.

Make the RPU optional by adding a has_rpu property and
default to having it disabled.

This changes the default setup from having the RPU to not
longer having it.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 1464173555-12800-3-git-send-email-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Edgar E. Iglesias 2016-06-06 16:59:29 +01:00 committed by Peter Maydell
parent 37d42473d1
commit 6ed92b14f6
2 changed files with 40 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
hw/arm/xlnx-zynqmp.c
View File

@ -83,6 +83,41 @@ static inline int arm_gic_ppi_index(int cpu_nr, int ppi_index)
return GIC_NUM_SPI_INTR + cpu_nr * GIC_INTERNAL + ppi_index;
}
static void xlnx_zynqmp_create_rpu(XlnxZynqMPState *s, const char *boot_cpu,
Error **errp)
{
Error *err = NULL;
int i;
for (i = 0; i < XLNX_ZYNQMP_NUM_RPU_CPUS; i++) {
char *name;
object_initialize(&s->rpu_cpu[i], sizeof(s->rpu_cpu[i]),
"cortex-r5-" TYPE_ARM_CPU);
object_property_add_child(OBJECT(s), "rpu-cpu[*]",
OBJECT(&s->rpu_cpu[i]), &error_abort);
name = object_get_canonical_path_component(OBJECT(&s->rpu_cpu[i]));
if (strcmp(name, boot_cpu)) {
/* Secondary CPUs start in PSCI powered-down state */
object_property_set_bool(OBJECT(&s->rpu_cpu[i]), true,
"start-powered-off", &error_abort);
} else {
s->boot_cpu_ptr = &s->rpu_cpu[i];
}
g_free(name);
object_property_set_bool(OBJECT(&s->rpu_cpu[i]), true, "reset-hivecs",
&error_abort);
object_property_set_bool(OBJECT(&s->rpu_cpu[i]), true, "realized",
&err);
if (err) {
error_propagate(errp, err);
return;
}
}
}
static void xlnx_zynqmp_init(Object *obj)
{
XlnxZynqMPState *s = XLNX_ZYNQMP(obj);
@ -95,13 +130,6 @@ static void xlnx_zynqmp_init(Object *obj)
&error_abort);
}
for (i = 0; i < XLNX_ZYNQMP_NUM_RPU_CPUS; i++) {
object_initialize(&s->rpu_cpu[i], sizeof(s->rpu_cpu[i]),
"cortex-r5-" TYPE_ARM_CPU);
object_property_add_child(obj, "rpu-cpu[*]", OBJECT(&s->rpu_cpu[i]),
&error_abort);
}
object_property_add_link(obj, "ddr-ram", TYPE_MEMORY_REGION,
(Object **)&s->ddr_ram,
qdev_prop_allow_set_link_before_realize,
@ -260,23 +288,8 @@ static void xlnx_zynqmp_realize(DeviceState *dev, Error **errp)
qdev_connect_gpio_out(DEVICE(&s->apu_cpu[i]), 1, irq);
}
for (i = 0; i < XLNX_ZYNQMP_NUM_RPU_CPUS; i++) {
char *name;
name = object_get_canonical_path_component(OBJECT(&s->rpu_cpu[i]));
if (strcmp(name, boot_cpu)) {
/* Secondary CPUs start in PSCI powered-down state */
object_property_set_bool(OBJECT(&s->rpu_cpu[i]), true,
"start-powered-off", &error_abort);
} else {
s->boot_cpu_ptr = &s->rpu_cpu[i];
}
g_free(name);
object_property_set_bool(OBJECT(&s->rpu_cpu[i]), true, "reset-hivecs",
&error_abort);
object_property_set_bool(OBJECT(&s->rpu_cpu[i]), true, "realized",
&err);
if (s->has_rpu) {
xlnx_zynqmp_create_rpu(s, boot_cpu, &err);
if (err) {
error_propagate(errp, err);
return;
@ -373,6 +386,7 @@ static void xlnx_zynqmp_realize(DeviceState *dev, Error **errp)
static Property xlnx_zynqmp_props[] = {
DEFINE_PROP_STRING("boot-cpu", XlnxZynqMPState, boot_cpu),
DEFINE_PROP_BOOL("secure", XlnxZynqMPState, secure, false),
DEFINE_PROP_BOOL("has_rpu", XlnxZynqMPState, has_rpu, false),
DEFINE_PROP_END_OF_LIST()
};

2
include/hw/arm/xlnx-zynqmp.h
View File

@ -87,6 +87,8 @@ typedef struct XlnxZynqMPState {
/* Has the ARM Security extensions? */
bool secure;
/* Has the RPU subsystem? */
bool has_rpu;
} XlnxZynqMPState;
#define XLNX_ZYNQMP_H