efibootia32.c revision 1.5 
1/*	$NetBSD: efibootia32.c,v 1.5 2019/09/13 02:19:45 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 startprog32_start(physaddr_t, uint32_t, uint32_t *, physaddr_t,
34    physaddr_t, physaddr_t, u_long, void *);
35extern void (*startprog32)(physaddr_t, uint32_t, uint32_t *, physaddr_t,
36    physaddr_t, physaddr_t, u_long, void *);
37extern u_int startprog32_size;
38
39void multiboot32_start(physaddr_t, physaddr_t, uint32_t);
40extern void (*multiboot32)(physaddr_t, physaddr_t, uint32_t);
41extern u_int multiboot32_size;
42
43void
44efi_md_init(void)
45{
46	EFI_STATUS status;
47	EFI_PHYSICAL_ADDRESS addr = EFI_ALLOCATE_MAX_ADDRESS;
48	u_int sz = EFI_SIZE_TO_PAGES(startprog32_size);
49
50	addr = EFI_ALLOCATE_MAX_ADDRESS;
51	sz = EFI_SIZE_TO_PAGES(startprog32_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	startprog32 = (void *)(u_long)addr;
58	CopyMem(startprog32, startprog32_start, startprog32_size);
59
60        addr = EFI_ALLOCATE_MAX_ADDRESS;
61        sz = EFI_SIZE_TO_PAGES(multiboot32_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        multiboot32 = (void *)(u_long)addr;
68        CopyMem(multiboot32, multiboot32_start, multiboot32_size);
69
70}
71
72/* ARGSUSED */
73void
74startprog(physaddr_t entry, uint32_t argc, uint32_t *argv, physaddr_t sp)
75{
76
77	(*startprog32)(entry, argc, argv,
78	    (physaddr_t)startprog32 + startprog32_size,
79	    efi_kernel_start, efi_kernel_start + efi_loadaddr,
80	    efi_kernel_size, startprog32);
81}
82
83/* ARGSUSED */
84void
85multiboot(physaddr_t entry, physaddr_t header, physaddr_t sp, uint32_t magic)
86{
87	(*multiboot32)(entry, header, magic);
88}
89