u-boot-brain/arch/x86/include/asm/handoff.h

/* 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
x86: Add a handoff header file Add an arch-specific handoff header so that we can use the HANDOFF feature on x86 devices. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> 2019-04-26 12:58:47 +09:00			`/* 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`

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> 2019-09-25 23:11:41 +09:00			`/**`
			`* 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)`
			`*/`
x86: Add a handoff header file Add an arch-specific handoff header so that we can use the HANDOFF feature on x86 devices. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> 2019-04-26 12:58:47 +09:00			`struct arch_spl_handoff {`
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> 2019-09-25 23:11:41 +09:00			`ulong usable_ram_top;`
			`void *hob_list;`
x86: Add a handoff header file Add an arch-specific handoff header so that we can use the HANDOFF feature on x86 devices. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> 2019-04-26 12:58:47 +09:00			`};`

			`#endif`