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imx: imx8qx: add system off support 

Add system power off support for i.MX8QX,
when Linux kernel issues "poweroff" command,
TF-A will send command to inform system
controller to power off whole board according
to board design, tested on i.MX8QX MEK board.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
This commit is contained in:
Anson Huang 2018-07-12 10:52:55 +08:00
parent bcf50ed0e7
commit 8972694e93
4 changed files with 25 additions and 0 deletions
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22
plat/imx/common/imx8_psci.c Normal file
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@ -0,0 +1,22 @@
/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch.h>
#include <arch_helpers.h>
#include <debug.h>
#include <plat_imx8.h>
#include <sci/sci.h>
#include <stdbool.h>
void __dead2 imx_system_off(void)
{
sc_pm_set_sys_power_mode(ipc_handle, SC_PM_PW_MODE_OFF);
wfi();
ERROR("power off failed.\n");
panic();
}

1
plat/imx/common/include/plat_imx8.h
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@ -17,4 +17,5 @@ void plat_gic_cpuif_enable(void);
void plat_gic_cpuif_disable(void);
void plat_gic_pcpu_init(void);
void __dead2 imx_system_off(void);
#endif /*__PLAT_IMX8_H__ */

1
plat/imx/imx8qx/imx8qx_psci.c
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@ -64,6 +64,7 @@ static const plat_psci_ops_t imx_plat_psci_ops = {
.pwr_domain_on = imx_pwr_domain_on,
.pwr_domain_on_finish = imx_pwr_domain_on_finish,
.validate_ns_entrypoint = imx_validate_ns_entrypoint,
.system_off = imx_system_off,
};
int plat_setup_psci_ops(uintptr_t sec_entrypoint,

1
plat/imx/imx8qx/platform.mk
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@ -20,6 +20,7 @@ BL31_SOURCES += plat/imx/common/lpuart_console.S \
plat/imx/imx8qx/imx8qx_bl31_setup.c \
plat/imx/imx8qx/imx8qx_psci.c \
plat/imx/common/imx8_topology.c \
plat/imx/common/imx8_psci.c \
lib/xlat_tables/xlat_tables_common.c \
lib/xlat_tables/aarch64/xlat_tables.c \
lib/cpus/aarch64/cortex_a35.S \