From: Hou Zhiqiang Zhiqiang.Hou@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.Hou@nxp.com Reviewed-by: Simon Glass sjg@chromium.org --- V5: - No change.
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