Hi Zhiqiang,
On Tue, 23 Jul 2024 at 08:43, Zhiqiang Hou Zhiqiang.Hou@nxp.com wrote:
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
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
Please also add a test for this callback to test/dm/cpu.c
Regards, Simon