LXR uboot/arch/arm/cpu/armv8/cpu-dt.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright 2016 NXP Semiconductor, Inc.
   4 */
   5
   6#include <common.h>
   7#include <asm/cache.h>
   8#include <asm/psci.h>
   9#include <asm/system.h>
  10#include <asm/armv8/sec_firmware.h>
  11#include <linux/libfdt.h>
  12
  13__weak int psci_update_dt(void *fdt)
  14{
  15        /*
  16         * If the PSCI in SEC Firmware didn't work, avoid to update the
  17         * device node of PSCI. But still return 0 instead of an error
  18         * number to support detecting PSCI dynamically and then switching
  19         * the SMP boot method between PSCI and spin-table.
  20         */
  21        if (CONFIG_IS_ENABLED(SEC_FIRMWARE_ARMV8_PSCI) &&
  22            sec_firmware_support_psci_version() == PSCI_INVALID_VER)
  23                return 0;
  24
  25        fdt_psci(fdt);
  26
  27#if defined(CONFIG_ARMV8_PSCI) && !defined(CONFIG_ARMV8_SECURE_BASE)
  28        /* secure code lives in RAM, keep it alive */
  29        fdt_add_mem_rsv(fdt, (unsigned long)__secure_start,
  30                        __secure_end - __secure_start);
  31#endif
  32
  33        return 0;
  34}
  35