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armv7R: K3: j721e: Shut down R5 core after ATF startup on A72

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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 <lokeshvutla@ti.com>
This commit is contained in:
Lokesh Vutla 2019-06-13 10:29:46 +05:30 committed by Tom Rini
parent f94a07c8a1
commit 9c0ff866b3
1 changed files with 57 additions and 0 deletions
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57
arch/arm/mach-k3/j721e_init.c
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@ -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