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https://github.com/brain-hackers/u-boot-brain
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9a561753ce
Newly add ARMv8 PSCI needs to be initialized, be copied or reserved in right place, this patch does all the setup steps. Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: York Sun <york.sun@nxp.com>
41 lines
991 B
C
41 lines
991 B
C
/*
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* Copyright 2016 NXP Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/psci.h>
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#include <asm/system.h>
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#ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
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#include <asm/armv8/sec_firmware.h>
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#endif
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int psci_update_dt(void *fdt)
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{
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#ifdef CONFIG_MP
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#if defined(CONFIG_ARMV8_PSCI) || defined(CONFIG_FSL_PPA_ARMV8_PSCI)
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#ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
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/*
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* If the PSCI in SEC Firmware didn't work, avoid to update the
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* device node of PSCI. But still return 0 instead of an error
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* number to support detecting PSCI dynamically and then switching
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* the SMP boot method between PSCI and spin-table.
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*/
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if (sec_firmware_support_psci_version() == 0xffffffff)
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return 0;
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#endif
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fdt_psci(fdt);
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#if defined(CONFIG_ARMV8_PSCI) && !defined(CONFIG_ARMV8_SECURE_BASE)
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/* secure code lives in RAM, keep it alive */
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fdt_add_mem_rsv(fdt, (unsigned long)__secure_start,
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__secure_end - __secure_start);
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#endif
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#endif
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#endif
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return 0;
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}
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