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cpu: add release_core callback

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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>
This commit is contained in:
Hou Zhiqiang 2024-08-01 11:59:47 +08:00 • committed by Fabio Estevam
parent 3cdcdcecac
commit f2c306cd99
2 changed files with 25 additions and 0 deletions
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10
drivers/cpu/cpu-uclass.c
View file

@ -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,

15
include/cpu.h
View file

@ -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