1/*	$NetBSD: efibootx64.c,v 1.6 2023/04/20 00:42:24 manu Exp $	*/
2
3/*-
4 * Copyright (c) 2016 Kimihiro Nonaka <nonaka@netbsd.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include "efiboot.h"
30
31#include <sys/bootblock.h>
32
33void startprog64_start(physaddr_t, physaddr_t, physaddr_t, u_long,
34    void *, physaddr_t);
35extern void (*startprog64)(physaddr_t, physaddr_t, physaddr_t, u_long,
36    void *, physaddr_t);
37extern u_int startprog64_size;
38
39void multiboot64_start(physaddr_t, physaddr_t, uint32_t);
40extern void (*multiboot64)(physaddr_t, physaddr_t, uint32_t);
41extern u_int multiboot64_size;
42
43void
44efi_md_init(void)
45{
46	EFI_STATUS status;
47	EFI_PHYSICAL_ADDRESS addr;
48	u_int sz;
49
50	addr = EFI_ALLOCATE_MAX_ADDRESS;
51	sz = EFI_SIZE_TO_PAGES(startprog64_size);
52	status = uefi_call_wrapper(BS->AllocatePages, 4, AllocateMaxAddress,
53	    EfiLoaderData, sz, &addr);
54	if (EFI_ERROR(status))
55		panic("%s: AllocatePages() failed: %d page(s): %" PRIxMAX,
56		    __func__, sz, (uintmax_t)status);
57	startprog64 = (void *)addr;
58	CopyMem(startprog64, startprog64_start, startprog64_size);
59
60	addr = EFI_ALLOCATE_MAX_ADDRESS;
61	sz = EFI_SIZE_TO_PAGES(multiboot64_size);
62	status = uefi_call_wrapper(BS->AllocatePages, 4, AllocateMaxAddress,
63	    EfiLoaderData, sz, &addr);
64	if (EFI_ERROR(status))
65		panic("%s: AllocatePages() failed: %d page(s): %" PRIxMAX,
66		    __func__, sz, (uintmax_t)status);
67	multiboot64 = (void *)addr;
68	CopyMem(multiboot64, multiboot64_start, multiboot64_size);
69}
70
71/* ARGSUSED */
72void
73startprog(physaddr_t entry, uint32_t argc, uint32_t *argv, physaddr_t sp)
74{
75	uint32_t *newsp = (void *)((char *)startprog64 + startprog64_size);
76
77	/* Copy argv to new stack pointer */
78	if (argc > 0) {
79		newsp -= argc;
80		memcpy(newsp, argv, sizeof(*argv) * argc);
81	}
82
83	(*startprog64)(efi_kernel_start, efi_load_start,
84	    (physaddr_t)newsp, efi_kernel_size, startprog64, entry);
85}
86
87/* ARGSUSED */
88void
89multiboot(physaddr_t entry, physaddr_t header, physaddr_t sp, uint32_t magic)
90{
91	(*multiboot64)(entry, header, magic);
92}
93