/*
 * Copyright (C) 2018 Intel Corporation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *   * Neither the name of Intel Corporation nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef UEFI_H
#define UEFI_H

typedef struct {
	uint16_t limit;
	uint64_t *base;
} __attribute__((packed)) dt_addr_t;

struct efi_ctx {
	uint64_t rip;
	void *rsdp;
	dt_addr_t  gdt;
	dt_addr_t  idt;
	uint16_t   tr_sel;
	uint16_t   ldt_sel;
	uint64_t   cr0;
	uint64_t   cr3;
	uint64_t   cr4;
	uint64_t   rflags;
	uint16_t   cs_sel;
	uint32_t   cs_ar;
	uint16_t   es_sel;
	uint16_t   ss_sel;
	uint16_t   ds_sel;
	uint16_t   fs_sel;
	uint16_t   gs_sel;
	uint64_t   efer;
	uint64_t   rax;
	uint64_t   rbx;
	uint64_t   rcx;
	uint64_t   rdx;
	uint64_t   rdi;
	uint64_t   rsi;
	uint64_t   rsp;
	uint64_t   rbp;
	uint64_t   r8;
	uint64_t   r9;
	uint64_t   r10;
	uint64_t   r11;
	uint64_t   r12;
	uint64_t   r13;
	uint64_t   r14;
	uint64_t   r15;
}__attribute__((packed));

void *get_rsdp_from_uefi(void);

#endif /* UEFI_H*/