@@ -13,6 +13,7 @@
#include <xen/guest_access.h>
#include <asm/setup.h>
#include <asm/platform.h>
+#include <asm/psci.h>
#include <asm/gic.h>
#include <xen/irq.h>
@@ -319,6 +320,38 @@ static int make_hypervisor_node(void *fdt, const struct dt_device_node *parent)
return res;
}
+static int make_psci_node(void *fdt, const struct dt_device_node *parent)
+{
+ int res;
+
+ DPRINT("Create PSCI node\n");
+
+ /* See linux Documentation/devicetree/bindings/arm/psci.txt */
+ res = fdt_begin_node(fdt, "psci");
+ if ( res )
+ return res;
+
+ res = fdt_property_string(fdt, "compatible", "arm,psci");
+ if ( res )
+ return res;
+
+ res = fdt_property_string(fdt, "method", "hvc");
+ if ( res )
+ return res;
+
+ res = fdt_property_cell(fdt, "cpu_off", __PSCI_cpu_off);
+ if ( res )
+ return res;
+
+ res = fdt_property_cell(fdt, "cpu_on", __PSCI_cpu_on);
+ if ( res )
+ return res;
+
+ res = fdt_end_node(fdt);
+
+ return res;
+}
+
/* Map the device in the domain */
static int map_device(struct domain *d, const struct dt_device_node *dev)
{
@@ -406,6 +439,7 @@ static int handle_node(struct domain *d, struct kernel_info *kinfo,
{
DT_MATCH_COMPATIBLE("xen,xen"),
DT_MATCH_COMPATIBLE("xen,multiboot-module"),
+ DT_MATCH_COMPATIBLE("arm,psci"),
{ /* sentinel */ },
};
const struct dt_device_node *child;
@@ -471,6 +505,10 @@ static int handle_node(struct domain *d, struct kernel_info *kinfo,
res = make_hypervisor_node(kinfo->fdt, np);
if ( res )
return res;
+
+ res = make_psci_node(kinfo->fdt, np);
+ if ( res )
+ return res;
}
res = fdt_end_node(kinfo->fdt);
Xen uses PSCI to bring up secondary cpus for the guest. Signed-off-by: Julien Grall <julien.grall@linaro.org> --- Changes in v2: - Use fdt_property_cell --- xen/arch/arm/domain_build.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+)