1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Bootmethod for booting via a U-Boot script
*
* Copyright 2021 Google LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#define LOG_CATEGORY UCLASS_BOOTSTD
#include <common.h>
#include <blk.h>
#include <bootflow.h>
#include <bootmeth.h>
#include <bootstd.h>
#include <dm.h>
#include <env.h>
#include <fs.h>
#include <image.h>
#include <malloc.h>
#include <mapmem.h>
#include <net.h>
#define SCRIPT_FNAME1 "boot.scr.uimg"
#define SCRIPT_FNAME2 "boot.scr"
static int script_check(struct udevice *dev, struct bootflow_iter *iter)
{
/* This works on block devices, network devices and SPI Flash */
if (iter->method_flags & BOOTFLOW_METHF_PXE_ONLY)
return log_msg_ret("pxe", -ENOTSUPP);
return 0;
}
/**
* script_fill_info() - Decode the U-Boot script to find out distro info
*
* @bflow: Bootflow to process
* @return 0 if OK, -ve on error
*/
static int script_fill_info(struct bootflow *bflow)
{
char *name = NULL;
char *data;
uint len;
int ret;
log_debug("parsing bflow file size %x\n", bflow->size);
ret = image_locate_script(bflow->buf, bflow->size, NULL, NULL, &data, &len);
if (!ret) {
if (strstr(data, "armbianEnv"))
name = "Armbian";
}
if (name) {
bflow->os_name = strdup(name);
if (!bflow->os_name)
return log_msg_ret("os", -ENOMEM);
}
return 0;
}
static int script_read_bootflow_file(struct udevice *bootstd,
struct bootflow *bflow)
{
struct blk_desc *desc = NULL;
const char *const *prefixes;
const char *prefix;
int ret, i;
ret = uclass_first_device_err(UCLASS_BOOTSTD, &bootstd);
if (ret)
return log_msg_ret("std", ret);
if (bflow->blk) {
/* We require a partition table */
if (!bflow->part)
return -ENOENT;
desc = dev_get_uclass_plat(bflow->blk);
}
prefixes = bootstd_get_prefixes(bootstd);
i = 0;
do {
prefix = prefixes ? prefixes[i] : NULL;
ret = bootmeth_try_file(bflow, desc, prefix, SCRIPT_FNAME1);
if (ret)
ret = bootmeth_try_file(bflow, desc, prefix,
SCRIPT_FNAME2);
} while (ret && prefixes && prefixes[++i]);
if (ret)
return log_msg_ret("try", ret);
bflow->subdir = strdup(prefix ? prefix : "");
if (!bflow->subdir)
return log_msg_ret("prefix", -ENOMEM);
ret = bootmeth_alloc_file(bflow, 0x10000, ARCH_DMA_MINALIGN);
if (ret)
return log_msg_ret("read", ret);
ret = script_fill_info(bflow);
if (ret)
return log_msg_ret("inf", ret);
ret = bootmeth_alloc_other(bflow, "boot.bmp", &bflow->logo,
&bflow->logo_size);
/* ignore error */
return 0;
}
static int script_read_bootflow_net(struct bootflow *bflow)
{
const char *addr_str;
int size, ret;
char *fname;
ulong addr;
/* figure out the load address */
addr_str = env_get("scriptaddr");
addr = addr_str ? hextoul(addr_str, NULL) : image_load_addr;
fname = env_get("boot_script_dhcp");
if (!fname)
return log_msg_ret("dhc", -EINVAL);
ret = dhcp_run(addr, fname, true);
if (ret)
return log_msg_ret("dhc", ret);
size = env_get_hex("filesize", 0);
if (!size)
return log_msg_ret("sz", -EINVAL);
bflow->buf = malloc(size + 1);
if (!bflow->buf)
return log_msg_ret("buf", -ENOMEM);
memcpy(bflow->buf, map_sysmem(addr, size), size);
bflow->buf[size] = '\0';
bflow->size = size;
bflow->state = BOOTFLOWST_READY;
return 0;
}
static int script_read_bootflow(struct udevice *dev, struct bootflow *bflow)
{
const struct udevice *media = dev_get_parent(bflow->dev);
struct udevice *bootstd;
int ret;
ret = uclass_first_device_err(UCLASS_BOOTSTD, &bootstd);
if (ret)
return log_msg_ret("std", ret);
if (IS_ENABLED(CONFIG_CMD_DHCP) &&
device_get_uclass_id(media) == UCLASS_ETH) {
/* we only support reading from one device, so ignore 'dev' */
ret = script_read_bootflow_net(bflow);
if (ret)
return log_msg_ret("net", ret);
} else {
ret = script_read_bootflow_file(bootstd, bflow);
if (ret)
return log_msg_ret("blk", ret);
}
return 0;
}
static int script_set_bootflow(struct udevice *dev, struct bootflow *bflow,
char *buf, int size)
{
buf[size] = '\0';
bflow->buf = buf;
bflow->size = size;
bflow->state = BOOTFLOWST_READY;
return 0;
}
static int script_boot(struct udevice *dev, struct bootflow *bflow)
{
struct blk_desc *desc = dev_get_uclass_plat(bflow->blk);
ulong addr;
int ret = 0;
if (desc->uclass_id == UCLASS_USB) {
ret = env_set("devtype", "usb");
} else {
/* If the uclass is AHCI, but the driver is ATA
* (not scsi), set devtype to sata
*/
if (IS_ENABLED(CONFIG_SATA) &&
desc->uclass_id == UCLASS_AHCI)
ret = env_set("devtype", "sata");
else
ret = env_set("devtype", blk_get_devtype(bflow->blk));
}
if (!ret)
ret = env_set_hex("devnum", desc->devnum);
if (!ret)
ret = env_set_hex("distro_bootpart", bflow->part);
if (!ret)
ret = env_set("prefix", bflow->subdir);
if (!ret && IS_ENABLED(CONFIG_ARCH_SUNXI) &&
!strcmp("mmc", blk_get_devtype(bflow->blk)))
ret = env_set_hex("mmc_bootdev", desc->devnum);
if (ret)
return log_msg_ret("env", ret);
log_debug("devtype: %s\n", env_get("devtype"));
log_debug("devnum: %s\n", env_get("devnum"));
log_debug("distro_bootpart: %s\n", env_get("distro_bootpart"));
log_debug("prefix: %s\n", env_get("prefix"));
log_debug("mmc_bootdev: %s\n", env_get("mmc_bootdev"));
addr = map_to_sysmem(bflow->buf);
ret = cmd_source_script(addr, NULL, NULL);
if (ret)
return log_msg_ret("boot", ret);
return 0;
}
static int script_bootmeth_bind(struct udevice *dev)
{
struct bootmeth_uc_plat *plat = dev_get_uclass_plat(dev);
plat->desc = IS_ENABLED(CONFIG_BOOTSTD_FULL) ?
"Script boot from a block device" : "script";
return 0;
}
static struct bootmeth_ops script_bootmeth_ops = {
.check = script_check,
.read_bootflow = script_read_bootflow,
.set_bootflow = script_set_bootflow,
.read_file = bootmeth_common_read_file,
.boot = script_boot,
};
static const struct udevice_id script_bootmeth_ids[] = {
{ .compatible = "u-boot,script" },
{ }
};
/* Put an number before 'script' to provide a default ordering */
U_BOOT_DRIVER(bootmeth_2script) = {
.name = "bootmeth_script",
.id = UCLASS_BOOTMETH,
.of_match = script_bootmeth_ids,
.ops = &script_bootmeth_ops,
.bind = script_bootmeth_bind,
};
|
