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2e9313179a
Provide a function to locate this information, rather than doing it automatically on startup, to save space in global_data. Signed-off-by: Simon Glass <sjg@chromium.org>
56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Passing basic information from SPL to U-Boot proper
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*
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* Copyright 2018 Google, Inc
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*/
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#ifndef __HANDOFF_H
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#define __HANDOFF_H
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#if CONFIG_IS_ENABLED(HANDOFF)
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#include <linux/types.h>
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#include <asm/handoff.h>
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/**
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* struct spl_handoff - information passed from SPL to U-Boot proper
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*
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* @ram_size: Value to use for gd->ram_size
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*/
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struct spl_handoff {
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struct arch_spl_handoff arch;
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u64 ram_size;
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struct {
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u64 start;
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u64 size;
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} ram_bank[CONFIG_NR_DRAM_BANKS];
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};
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void handoff_save_dram(struct spl_handoff *ho);
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void handoff_load_dram_size(struct spl_handoff *ho);
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void handoff_load_dram_banks(struct spl_handoff *ho);
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/**
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* handoff_get() - Get the SPL handoff information
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*
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* Return: Pointer to SPL handoff if received, else NULL
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*/
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struct spl_handoff *handoff_get(void);
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/**
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* handoff_arch_save() - Save arch-specific info into the handoff area
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*
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* This is defined to an empty function by default, but arch-specific code can
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* define it to write to spi_handoff->arch. It is called from
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* write_spl_handoff().
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*
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* @ho: Handoff area to fill in
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* Return: 0 if OK, -ve on error
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*/
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int handoff_arch_save(struct spl_handoff *ho);
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#endif
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#endif
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