ufs_module.c revision 295550 
1/*-
2 * Copyright (c) 1998 Robert Nordier
3 * All rights reserved.
4 * Copyright (c) 2001 Robert Drehmel
5 * All rights reserved.
6 * Copyright (c) 2014 Nathan Whitehorn
7 * All rights reserved.
8 * Copyright (c) 2015 Eric McCorkle
9 * All rights reverved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $FreeBSD: stable/10/sys/boot/efi/boot1/ufs_module.c 295550 2016-02-11 22:33:47Z smh $
33 */
34
35#include <stdarg.h>
36#include <stdbool.h>
37#include <sys/cdefs.h>
38#include <sys/param.h>
39#include <efi.h>
40
41#include "boot_module.h"
42
43static dev_info_t *devinfo;
44static dev_info_t *devices;
45
46static int
47dskread(void *buf, u_int64_t lba, int nblk)
48{
49	int size;
50	EFI_STATUS status;
51
52	lba = lba / (devinfo->dev->Media->BlockSize / DEV_BSIZE);
53	size = nblk * DEV_BSIZE;
54
55	status = devinfo->dev->ReadBlocks(devinfo->dev,
56	    devinfo->dev->Media->MediaId, lba, size, buf);
57
58	if (status != EFI_SUCCESS) {
59		DPRINTF("dskread: failed dev: %p, id: %u, lba: %lu, size: %d, "
60		    "status: %lu\n", devinfo->dev,
61		    devinfo->dev->Media->MediaId, lba, size,
62		    EFI_ERROR_CODE(status));
63		return (-1);
64	}
65
66	return (0);
67}
68
69#include "ufsread.c"
70
71static struct dmadat __dmadat;
72
73static int
74init_dev(dev_info_t* dev)
75{
76
77	devinfo = dev;
78	dmadat = &__dmadat;
79
80	return fsread(0, NULL, 0);
81}
82
83static EFI_STATUS
84probe(dev_info_t* dev)
85{
86
87	if (init_dev(dev) < 0)
88		return (EFI_UNSUPPORTED);
89
90	add_device(&devices, dev);
91
92	return (EFI_SUCCESS);
93}
94
95static EFI_STATUS
96load(const char *filepath, dev_info_t *dev, void **bufp, size_t *bufsize)
97{
98	ufs_ino_t ino;
99	EFI_STATUS status;
100	size_t size;
101	ssize_t read;
102	void *buf;
103
104	DPRINTF("Loading '%s' from %s\n", filepath, devpath_str(dev->devpath));
105
106	if (init_dev(dev) < 0) {
107		DPRINTF("Failed to init device\n");
108		return (EFI_UNSUPPORTED);
109	}
110
111	if ((ino = lookup(filepath)) == 0) {
112		DPRINTF("Failed to lookup '%s' (file not found?)\n", filepath);
113		return (EFI_NOT_FOUND);
114	}
115
116	if (fsread_size(ino, NULL, 0, &size) < 0 || size <= 0) {
117		printf("Failed to read size of '%s' ino: %d\n", filepath, ino);
118		return (EFI_INVALID_PARAMETER);
119	}
120
121	if ((status = bs->AllocatePool(EfiLoaderData, size, &buf)) !=
122	    EFI_SUCCESS) {
123		printf("Failed to allocate read buffer %zu for '%s' (%lu)\n",
124		    size, filepath, EFI_ERROR_CODE(status));
125		return (status);
126	}
127
128	read = fsread(ino, buf, size);
129	if ((size_t)read != size) {
130		printf("Failed to read '%s' (%zd != %zu)\n", filepath, read,
131		    size);
132		(void)bs->FreePool(buf);
133		return (EFI_INVALID_PARAMETER);
134	}
135
136	DPRINTF("Load complete\n");
137
138	*bufp = buf;
139	*bufsize = size;
140
141	return (EFI_SUCCESS);
142}
143
144static void
145status()
146{
147	int i;
148	dev_info_t *dev;
149
150	for (dev = devices, i = 0; dev != NULL; dev = dev->next, i++)
151		;
152
153	printf("%s found ", ufs_module.name);
154	switch (i) {
155	case 0:
156		printf("no partitions\n");
157		break;
158	case 1:
159		printf("%d partition\n", i);
160		break;
161	default:
162		printf("%d partitions\n", i);
163	}
164}
165
166static dev_info_t *
167_devices()
168{
169
170	return (devices);
171}
172
173const boot_module_t ufs_module =
174{
175	.name = "UFS",
176	.probe = probe,
177	.load = load,
178	.status = status,
179	.devices = _devices
180};
181