Populate the release_resources_for_core_shutdown() api with
shutting down r5 cores so that it will by called just after
jumping to ATF.
Signed-off-by: Lokesh Vutla <lokeshvu...@ti.com>
---
arch/arm/mach-k3/j721e_init.c | 57 +++++++++++++++++++++++++++++++++++
1 file changed, 57 insertions(+)
diff --git a/arch/arm/mach-k3/j721e_init.c b/arch/arm/mach-k3/j721e_init.c
index 211ca448aa..b20c941846 100644
--- a/arch/arm/mach-k3/j721e_init.c
+++ b/arch/arm/mach-k3/j721e_init.c
@@ -12,6 +12,8 @@
#include <asm/armv7_mpu.h>
#include <asm/arch/hardware.h>
#include "common.h"
+#include <asm/arch/sys_proto.h>
+#include <linux/soc/ti/ti_sci_protocol.h>
#ifdef CONFIG_SPL_BUILD
static void mmr_unlock(u32 base, u32 partition)
@@ -139,3 +141,58 @@ u32 spl_boot_device(void)
return __get_primary_bootmedia(main_devstat, wkup_devstat);
}
#endif
+
+#ifdef CONFIG_SYS_K3_SPL_ATF
+
+#define J721E_DEV_MCU_RTI0 262
+#define J721E_DEV_MCU_RTI1 263
+#define J721E_DEV_MCU_ARMSS0_CPU0 250
+#define J721E_DEV_MCU_ARMSS0_CPU1 251
+
+void release_resources_for_core_shutdown(void)
+{
+ struct ti_sci_handle *ti_sci;
+ struct ti_sci_dev_ops *dev_ops;
+ struct ti_sci_proc_ops *proc_ops;
+ int ret;
+ u32 i;
+
+ const u32 put_device_ids[] = {
+ J721E_DEV_MCU_RTI0,
+ J721E_DEV_MCU_RTI1,
+ };
+
+ ti_sci = get_ti_sci_handle();
+ dev_ops = &ti_sci->ops.dev_ops;
+ proc_ops = &ti_sci->ops.proc_ops;
+
+ /* Iterate through list of devices to put (shutdown) */
+ for (i = 0; i < ARRAY_SIZE(put_device_ids); i++) {
+ u32 id = put_device_ids[i];
+
+ ret = dev_ops->put_device(ti_sci, id);
+ if (ret)
+ panic("Failed to put device %u (%d)\n", id, ret);
+ }
+
+ const u32 put_core_ids[] = {
+ J721E_DEV_MCU_ARMSS0_CPU1,
+ J721E_DEV_MCU_ARMSS0_CPU0, /* Handle CPU0 after CPU1 */
+ };
+
+ /* Iterate through list of cores to put (shutdown) */
+ for (i = 0; i < ARRAY_SIZE(put_core_ids); i++) {
+ u32 id = put_core_ids[i];
+
+ /*
+ * Queue up the core shutdown request. Note that this call
+ * needs to be followed up by an actual invocation of an WFE
+ * or WFI CPU instruction.
+ */
+ ret = proc_ops->proc_shutdown_no_wait(ti_sci, id);
+ if (ret)
+ panic("Failed sending core %u shutdown message (%d)\n",
+ id, ret);
+ }
+}
+#endif
--
2.17.1
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