blob: 75d19b1f6e511174cf48eac30b8d0dd8e6914c3d [file] [log] [blame]
Simon Glassb0edea32018-11-15 18:44:09 -07001/* 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#ifdef CONFIG_NR_DRAM_BANKS
24 struct {
25 u64 start;
26 u64 size;
27 } ram_bank[CONFIG_NR_DRAM_BANKS];
28#endif
29};
30
31void handoff_save_dram(struct spl_handoff *ho);
32void handoff_load_dram_size(struct spl_handoff *ho);
33void handoff_load_dram_banks(struct spl_handoff *ho);
Simon Glass366291a2019-09-25 08:11:18 -060034
35/**
36 * handoff_arch_save() - Save arch-specific info into the handoff area
37 *
38 * This is defined to an empty function by default, but arch-specific code can
39 * define it to write to spi_handoff->arch. It is called from
40 * write_spl_handoff().
41 *
42 * @ho: Handoff area to fill in
43 * @return 0 if OK, -ve on error
44 */
45int handoff_arch_save(struct spl_handoff *ho);
46
Simon Glassb0edea32018-11-15 18:44:09 -070047#endif
48
49#endif