u-boot/arch/x86/include/asm/handoff.h
Simon Glass c3863eadbc x86: fsp: Save usable RAM and hob_list in the handoff area
The useable RAM is calculated when the RAM is inited. Save this value so
that it can be easily used in U-Boot proper.

Also save a pointer to the hob list so that it is accessible (before
relocation only) in U-Boot proper. This avoids having to scan it in SPL,
for everything U-Boot proper might need later.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: guard handoff_arch_save() with IS_ENABLED(CONFIG_USE_HOB)]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2019-10-08 13:57:36 +08:00

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C

/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Architecture-specific SPL handoff information for x86
*
* Copyright 2018 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*/
#ifndef __x86_asm_handoff_h
#define __x86_asm_handoff_h
/**
* struct arch_spl_handoff - architecture-specific handoff info
*
* @usable_ram_top: Value returned by board_get_usable_ram_top() in SPL
* @hob_list: Start of FSP hand-off blocks (HOBs)
*/
struct arch_spl_handoff {
ulong usable_ram_top;
void *hob_list;
};
#endif