Commit 0abf4bba authored by Saeed Nowshadi's avatar Saeed Nowshadi Committed by Jolly Shah
Browse files

xilinx: versal: Add PSCI APIs for system shutdown & reset



Add following APIs in plat_psci to support system shutdown & reset:
- versal_system_off
- versal_system_reset

Signed-off-by: default avatarSaeed Nowshadi <saeed.nowshadi@xilinx.com>
Signed-off-by: default avatarJolly Shah <jolly.shah@xilinx.com>
Change-Id: Ia2c1a19ded18984b393e1fdee760bf48b45e9902
parent 5a8ffeab
......@@ -12,6 +12,7 @@
#include <lib/mmio.h>
#include <lib/psci/psci.h>
#include <plat/common/platform.h>
#include <plat/arm/common/plat_arm.h>
#include "pm_api_sys.h"
#include "pm_client.h"
......@@ -114,6 +115,34 @@ void versal_pwr_domain_on_finish(const psci_power_state_t *target_state)
plat_versal_gic_cpuif_enable();
}
/**
* versal_system_off() - This function sends the system off request
* to firmware. This function does not return.
*/
static void __dead2 versal_system_off(void)
{
/* Send the power down request to the PMC */
pm_system_shutdown(XPM_SHUTDOWN_TYPE_SHUTDOWN,
pm_get_shutdown_scope());
while (1)
wfi();
}
/**
* versal_system_reset() - This function sends the reset request
* to firmware for the system to reset. This function does not return.
*/
static void __dead2 versal_system_reset(void)
{
/* Send the system reset request to the PMC */
pm_system_shutdown(XPM_SHUTDOWN_TYPE_RESET,
pm_get_shutdown_scope());
while (1)
wfi();
}
/**
* versal_pwr_domain_off() - This function performs actions to turn off core
*
......@@ -190,6 +219,8 @@ static const struct plat_psci_ops versal_nopmc_psci_ops = {
.pwr_domain_on_finish = versal_pwr_domain_on_finish,
.pwr_domain_suspend = versal_pwr_domain_suspend,
.pwr_domain_suspend_finish = versal_pwr_domain_suspend_finish,
.system_off = versal_system_off,
.system_reset = versal_system_reset,
.validate_power_state = versal_validate_power_state,
.get_sys_suspend_power_state = versal_get_sys_suspend_power_state,
};
......
......@@ -21,6 +21,19 @@
#define LIBPM_MODULE_ID 0x2
#define LOADER_MODULE_ID 0x7
/* default shutdown/reboot scope is system(2) */
static unsigned int pm_shutdown_scope = XPM_SHUTDOWN_SUBTYPE_RST_SYSTEM;
/**
* pm_get_shutdown_scope() - Get the currently set shutdown scope
*
* @return Shutdown scope value
*/
unsigned int pm_get_shutdown_scope(void)
{
return pm_shutdown_scope;
}
/**
* Assigning of argument values into array elements.
*/
......@@ -625,7 +638,7 @@ enum pm_ret_status pm_force_powerdown(uint32_t target, uint8_t ack)
/**
* pm_system_shutdown() - PM call to request a system shutdown or restart
* @type Shutdown or restart? 0=shutdown, 1=restart
* @type Shutdown or restart? 0=shutdown, 1=restart, 2=setscope
* @subtype Scope: 0=APU-subsystem, 1=PS, 2=system
*
* @return Returns status, either success or error+reason
......@@ -634,6 +647,12 @@ enum pm_ret_status pm_system_shutdown(uint32_t type, uint32_t subtype)
{
uint32_t payload[PAYLOAD_ARG_CNT];
if (type == XPM_SHUTDOWN_TYPE_SETSCOPE_ONLY) {
/* Setting scope for subsequent PSCI reboot or shutdown */
pm_shutdown_scope = subtype;
return PM_RET_SUCCESS;
}
/* Send request to the PMC */
PM_PACK_PAYLOAD3(payload, LIBPM_MODULE_ID, PM_SYSTEM_SHUTDOWN, type,
subtype);
......
......@@ -63,4 +63,6 @@ enum pm_ret_status pm_api_ioctl(uint32_t device_id, uint32_t ioctl_id,
uint32_t arg1, uint32_t arg2, uint32_t *value);
enum pm_ret_status pm_query_data(uint32_t qid, uint32_t arg1, uint32_t arg2,
uint32_t arg3, uint32_t *data);
unsigned int pm_get_shutdown_scope(void);
#endif /* PM_API_SYS_H */
......@@ -77,6 +77,15 @@
/* Fractional data portion for PLL */
#define PM_PLL_PARAM_DATA 2
/* System shutdown macros */
#define XPM_SHUTDOWN_TYPE_SHUTDOWN 0U
#define XPM_SHUTDOWN_TYPE_RESET 1U
#define XPM_SHUTDOWN_TYPE_SETSCOPE_ONLY 2U
#define XPM_SHUTDOWN_SUBTYPE_RST_SUBSYSTEM 0U
#define XPM_SHUTDOWN_SUBTYPE_RST_PS_ONLY 1U
#define XPM_SHUTDOWN_SUBTYPE_RST_SYSTEM 2U
/*********************************************************************
* Enum definitions
********************************************************************/
......
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment