[u-boot.git] / include / handoff.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Passing basic information from SPL to U-Boot proper
 *
 * Copyright 2018 Google, Inc
 */

#ifndef __HANDOFF_H
#define __HANDOFF_H

#if CONFIG_IS_ENABLED(HANDOFF)

#include <linux/types.h>
#include <asm/handoff.h>

/**
 * struct spl_handoff - information passed from SPL to U-Boot proper
 *
 * @ram_size: Value to use for gd->ram_size
 */
struct spl_handoff {
	struct arch_spl_handoff arch;
	u64 ram_size;
	struct {
		u64 start;
		u64 size;
	} ram_bank[CONFIG_NR_DRAM_BANKS];
};

void handoff_save_dram(struct spl_handoff *ho);
void handoff_load_dram_size(struct spl_handoff *ho);
void handoff_load_dram_banks(struct spl_handoff *ho);

/**
 * handoff_arch_save() - Save arch-specific info into the handoff area
 *
 * This is defined to an empty function by default, but arch-specific code can
 * define it to write to spi_handoff->arch. It is called from
 * write_spl_handoff().
 *
 * @ho: Handoff area to fill in
 * Return: 0 if OK, -ve on error
 */
int handoff_arch_save(struct spl_handoff *ho);

#endif

#endif
Commit	Line	Data
b0edea3c SG	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
a79fc7a7	13	#include <linux/types.h>
b0edea3c SG	14	#include <asm/handoff.h>
	15
	16	/**
	17	* struct spl_handoff - information passed from SPL to U-Boot proper
	18	*
	19	* @ram_size: Value to use for gd->ram_size
	20	*/
	21	struct spl_handoff {
	22	struct arch_spl_handoff arch;
	23	u64 ram_size;
b0edea3c SG	24	struct {
	25	u64 start;
	26	u64 size;
	27	} ram_bank[CONFIG_NR_DRAM_BANKS];
b0edea3c SG	28	};
	29
	30	void handoff_save_dram(struct spl_handoff *ho);
	31	void handoff_load_dram_size(struct spl_handoff *ho);
	32	void handoff_load_dram_banks(struct spl_handoff *ho);
366291af SG	33
	34	/**
	35	* handoff_arch_save() - Save arch-specific info into the handoff area
	36	*
	37	* This is defined to an empty function by default, but arch-specific code can
	38	* define it to write to spi_handoff->arch. It is called from
	39	* write_spl_handoff().
	40	*
	41	* @ho: Handoff area to fill in
185f812c	42	* Return: 0 if OK, -ve on error
366291af SG	43	*/
	44	int handoff_arch_save(struct spl_handoff *ho);
	45
b0edea3c SG	46	#endif
	47
	48	#endif