LXR uboot/include/handoff.h

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * Passing basic information from SPL to U-Boot proper
   4 *
   5 * Copyright 2018 Google, Inc
   6 */
   7
   8#ifndef __HANDOFF_H
   9#define __HANDOFF_H
  10
  11#if CONFIG_IS_ENABLED(HANDOFF)
  12
  13#include <asm/handoff.h>
  14
  15/**
  16 * struct spl_handoff - information passed from SPL to U-Boot proper
  17 *
  18 * @ram_size: Value to use for gd->ram_size
  19 */
  20struct spl_handoff {
  21        struct arch_spl_handoff arch;
  22        u64 ram_size;
  23        struct {
  24                u64 start;
  25                u64 size;
  26        } ram_bank[CONFIG_NR_DRAM_BANKS];
  27};
  28
  29void handoff_save_dram(struct spl_handoff *ho);
  30void handoff_load_dram_size(struct spl_handoff *ho);
  31void handoff_load_dram_banks(struct spl_handoff *ho);
  32
  33/**
  34 * handoff_arch_save() - Save arch-specific info into the handoff area
  35 *
  36 * This is defined to an empty function by default, but arch-specific code can
  37 * define it to write to spi_handoff->arch. It is called from
  38 * write_spl_handoff().
  39 *
  40 * @ho: Handoff area to fill in
  41 * @return 0 if OK, -ve on error
  42 */
  43int handoff_arch_save(struct spl_handoff *ho);
  44
  45#endif
  46
  47#endif
  48