u-boot/arch/arm/cpu/armv8/cpu-dt.c
Hou Zhiqiang 45684ae37b ARMv8/PSCI: Fixup the device tree for PSCI
Set the enable-method in the cpu node to PSCI, and create device
node for PSCI, when PSCI was enabled.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2016-07-19 11:34:07 -07:00

31 lines
715 B
C

/*
* Copyright 2016 NXP Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/psci.h>
#ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
#include <asm/armv8/sec_firmware.h>
#endif
int psci_update_dt(void *fdt)
{
#ifdef CONFIG_MP
#if defined(CONFIG_ARMV8_PSCI)
#ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
/*
* If the PSCI in SEC Firmware didn't work, avoid to update the
* device node of PSCI. But still return 0 instead of an error
* number to support detecting PSCI dynamically and then switching
* the SMP boot method between PSCI and spin-table.
*/
if (sec_firmware_support_psci_version() == 0xffffffff)
return 0;
#endif
fdt_psci(fdt);
#endif
#endif
return 0;
}