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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* coreboot.h
*
* Coreboot device and driver interfaces.
*
* Copyright 2014 Gerd Hoffmann <kraxel@redhat.com>
* Copyright 2017 Google Inc.
* Copyright 2017 Samuel Holland <samuel@sholland.org>
*/
#ifndef _LINUX_COREBOOT_H
#define _LINUX_COREBOOT_H
#include <linux/compiler_attributes.h>
#include <linux/types.h>
typedef __aligned(4) u64 cb_u64;
/* List of coreboot entry structures that is used */
#define CB_TAG_FRAMEBUFFER 0x12
#define LB_TAG_CBMEM_ENTRY 0x31
/* Generic */
struct coreboot_table_entry {
u32 tag;
u32 size;
};
/* Points to a CBMEM entry */
struct lb_cbmem_ref {
u32 tag;
u32 size;
cb_u64 cbmem_addr;
};
/* Corresponds to LB_TAG_CBMEM_ENTRY */
struct lb_cbmem_entry {
u32 tag;
u32 size;
cb_u64 address;
u32 entry_size;
u32 id;
};
/* Describes framebuffer setup by coreboot */
struct lb_framebuffer {
u32 tag;
u32 size;
cb_u64 physical_address;
u32 x_resolution;
u32 y_resolution;
u32 bytes_per_line;
u8 bits_per_pixel;
u8 red_mask_pos;
u8 red_mask_size;
u8 green_mask_pos;
u8 green_mask_size;
u8 blue_mask_pos;
u8 blue_mask_size;
u8 reserved_mask_pos;
u8 reserved_mask_size;
};
#endif /* _LINUX_COREBOOT_H */
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