feat(allwinner): provide CPU idle states to the rich OS
When using SCPI as the PSCI backend, firmware can wake up the CPUs and
cluster from sleep, so CPU idle states are available for the rich OS to
use. In that case, advertise them to the rich OS via the DTB.
Change-Id: I718ef6ef41212fe5213b11b4799613adbbe6e0eb
Signed-off-by: Samuel Holland <samuel@sholland.org>
diff --git a/plat/allwinner/common/sunxi_pm.c b/plat/allwinner/common/sunxi_pm.c
index eb1b7e7..3772b4a 100644
--- a/plat/allwinner/common/sunxi_pm.c
+++ b/plat/allwinner/common/sunxi_pm.c
@@ -9,12 +9,22 @@
#include <platform_def.h>
#include <common/debug.h>
+#include <common/fdt_fixup.h>
#include <lib/mmio.h>
#include <lib/psci/psci.h>
#include <sunxi_cpucfg.h>
#include <sunxi_private.h>
+static bool psci_is_scpi;
+
+#if SUNXI_PSCI_USE_SCPI
+bool sunxi_psci_is_scpi(void)
+{
+ return psci_is_scpi;
+}
+#endif
+
int sunxi_validate_ns_entrypoint(uintptr_t ns_entrypoint)
{
/* The non-secure entry point must be in DRAM */
@@ -40,6 +50,7 @@
if (sunxi_set_scpi_psci_ops(psci_ops) == 0) {
INFO("PSCI: Suspend is available via SCPI\n");
+ psci_is_scpi = true;
} else {
INFO("PSCI: Suspend is unavailable\n");
sunxi_set_native_psci_ops(psci_ops);