From: Hou Zhiqiang <zhiqiang....@nxp.com>
Add a new callback release_core to the cpu_ops, which is used to
release a CPU core to run baremetal or RTOS application on a SoC
with multiple CPU cores.
Signed-off-by: Hou Zhiqiang <zhiqiang....@nxp.com>
---
drivers/cpu/cpu-uclass.c | 10 ++++++++++
include/cpu.h | 15 +++++++++++++++
2 files changed, 25 insertions(+)
diff --git a/drivers/cpu/cpu-uclass.c b/drivers/cpu/cpu-uclass.c
index 16f8f2e521..2c8e46c05e 100644
--- a/drivers/cpu/cpu-uclass.c
+++ b/drivers/cpu/cpu-uclass.c
@@ -104,6 +104,16 @@ int cpu_get_vendor(const struct udevice *dev, char *buf,
int size)
return ops->get_vendor(dev, buf, size);
}
+int cpu_release_core(const struct udevice *dev, phys_addr_t addr)
+{
+ struct cpu_ops *ops = cpu_get_ops(dev);
+
+ if (!ops->release_core)
+ return -ENOSYS;
+
+ return ops->release_core(dev, addr);
+}
+
U_BOOT_DRIVER(cpu_bus) = {
.name = "cpu_bus",
.id = UCLASS_SIMPLE_BUS,
diff --git a/include/cpu.h b/include/cpu.h
index 2077ff3063..0018910d61 100644
--- a/include/cpu.h
+++ b/include/cpu.h
@@ -102,6 +102,15 @@ struct cpu_ops {
* if not.
*/
int (*is_current)(struct udevice *dev);
+
+ /**
+ * release_core() - Relase a CPU core to the given address to run
application
+ *
+ * @dev: Device to check (UCLASS_CPU)
+ * @addr: Address to relese the CPU core
+ * @return 0 if OK, -ve on error
+ */
+ int (*release_core)(const struct udevice *dev, phys_addr_t addr);
};
#define cpu_get_ops(dev) ((struct cpu_ops *)(dev)->driver->ops)
@@ -164,4 +173,10 @@ int cpu_is_current(struct udevice *cpu);
*/
struct udevice *cpu_get_current_dev(void);
+/**
+ * cpu_release_core() - Relase a CPU core to the given address to run
application
+ *
+ * @return 0 if OK, -ve on error
+ */
+int cpu_release_core(const struct udevice *dev, phys_addr_t addr);
#endif
--
2.17.1
