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6#include <common.h>
7#include <dm.h>
8#include <env.h>
9#include <errno.h>
10#include <blk.h>
11#include <fs.h>
12#include <fs_loader.h>
13#include <linux/string.h>
14#include <mapmem.h>
15#include <malloc.h>
16#include <spl.h>
17
18DECLARE_GLOBAL_DATA_PTR;
19
20
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22
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29
30
31struct firmware {
32 size_t size;
33 const u8 *data;
34 const char *name;
35 u32 offset;
36};
37
38#ifdef CONFIG_CMD_UBIFS
39static int mount_ubifs(char *mtdpart, char *ubivol)
40{
41 int ret = ubi_part(mtdpart, NULL);
42
43 if (ret) {
44 debug("Cannot find mtd partition %s\n", mtdpart);
45 return ret;
46 }
47
48 return cmd_ubifs_mount(ubivol);
49}
50
51static int umount_ubifs(void)
52{
53 return cmd_ubifs_umount();
54}
55#else
56static int mount_ubifs(char *mtdpart, char *ubivol)
57{
58 debug("Error: Cannot load image: no UBIFS support\n");
59 return -ENOSYS;
60}
61#endif
62
63static int select_fs_dev(struct device_platdata *plat)
64{
65 int ret;
66
67 if (plat->phandlepart.phandle) {
68 ofnode node;
69
70 node = ofnode_get_by_phandle(plat->phandlepart.phandle);
71
72 struct udevice *dev;
73
74 ret = device_get_global_by_ofnode(node, &dev);
75 if (!ret) {
76 struct blk_desc *desc = blk_get_by_device(dev);
77 if (desc) {
78 ret = fs_set_blk_dev_with_part(desc,
79 plat->phandlepart.partition);
80 } else {
81 debug("%s: No device found\n", __func__);
82 return -ENODEV;
83 }
84 }
85 } else if (plat->mtdpart && plat->ubivol) {
86 ret = mount_ubifs(plat->mtdpart, plat->ubivol);
87 if (ret)
88 return ret;
89
90 ret = fs_set_blk_dev("ubi", NULL, FS_TYPE_UBIFS);
91 } else {
92 debug("Error: unsupported storage device.\n");
93 return -ENODEV;
94 }
95
96 if (ret)
97 debug("Error: could not access storage.\n");
98
99 return ret;
100}
101
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110
111
112
113static int _request_firmware_prepare(struct udevice *dev,
114 const char *name, void *dbuf,
115 size_t size, u32 offset)
116{
117 if (!name || name[0] == '\0')
118 return -EINVAL;
119
120 struct firmware *firmwarep = dev_get_priv(dev);
121
122 if (!firmwarep)
123 return -ENOMEM;
124
125 firmwarep->name = name;
126 firmwarep->offset = offset;
127 firmwarep->data = dbuf;
128 firmwarep->size = size;
129
130 return 0;
131}
132
133
134
135
136
137
138
139static int fw_get_filesystem_firmware(struct udevice *dev)
140{
141 loff_t actread;
142 char *storage_interface, *dev_part, *ubi_mtdpart, *ubi_volume;
143 int ret;
144
145 storage_interface = env_get("storage_interface");
146 dev_part = env_get("fw_dev_part");
147 ubi_mtdpart = env_get("fw_ubi_mtdpart");
148 ubi_volume = env_get("fw_ubi_volume");
149
150 if (storage_interface && dev_part) {
151 ret = fs_set_blk_dev(storage_interface, dev_part, FS_TYPE_ANY);
152 } else if (storage_interface && ubi_mtdpart && ubi_volume) {
153 ret = mount_ubifs(ubi_mtdpart, ubi_volume);
154 if (ret)
155 return ret;
156
157 if (!strcmp("ubi", storage_interface))
158 ret = fs_set_blk_dev(storage_interface, NULL,
159 FS_TYPE_UBIFS);
160 else
161 ret = -ENODEV;
162 } else {
163 ret = select_fs_dev(dev->platdata);
164 }
165
166 if (ret)
167 goto out;
168
169 struct firmware *firmwarep = dev_get_priv(dev);
170
171 if (!firmwarep)
172 return -ENOMEM;
173
174 ret = fs_read(firmwarep->name, (ulong)map_to_sysmem(firmwarep->data),
175 firmwarep->offset, firmwarep->size, &actread);
176
177 if (ret) {
178 debug("Error: %d Failed to read %s from flash %lld != %zu.\n",
179 ret, firmwarep->name, actread, firmwarep->size);
180 } else {
181 ret = actread;
182 }
183
184out:
185#ifdef CONFIG_CMD_UBIFS
186 umount_ubifs();
187#endif
188 return ret;
189}
190
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201
202
203int request_firmware_into_buf(struct udevice *dev,
204 const char *name,
205 void *buf, size_t size, u32 offset)
206{
207 int ret;
208
209 if (!dev)
210 return -EINVAL;
211
212 ret = _request_firmware_prepare(dev, name, buf, size, offset);
213 if (ret < 0)
214 return ret;
215
216 ret = fw_get_filesystem_firmware(dev);
217
218 return ret;
219}
220
221static int fs_loader_ofdata_to_platdata(struct udevice *dev)
222{
223 u32 phandlepart[2];
224
225 ofnode fs_loader_node = dev_ofnode(dev);
226
227 if (ofnode_valid(fs_loader_node)) {
228 struct device_platdata *plat;
229
230 plat = dev->platdata;
231 if (!ofnode_read_u32_array(fs_loader_node,
232 "phandlepart",
233 phandlepart, 2)) {
234 plat->phandlepart.phandle = phandlepart[0];
235 plat->phandlepart.partition = phandlepart[1];
236 }
237
238 plat->mtdpart = (char *)ofnode_read_string(
239 fs_loader_node, "mtdpart");
240
241 plat->ubivol = (char *)ofnode_read_string(
242 fs_loader_node, "ubivol");
243 }
244
245 return 0;
246}
247
248static int fs_loader_probe(struct udevice *dev)
249{
250#if CONFIG_IS_ENABLED(DM) && CONFIG_IS_ENABLED(BLK)
251 int ret;
252 struct device_platdata *plat = dev->platdata;
253
254 if (plat->phandlepart.phandle) {
255 ofnode node = ofnode_get_by_phandle(plat->phandlepart.phandle);
256 struct udevice *parent_dev = NULL;
257
258 ret = device_get_global_by_ofnode(node, &parent_dev);
259 if (!ret) {
260 struct udevice *dev;
261
262 ret = blk_get_from_parent(parent_dev, &dev);
263 if (ret) {
264 debug("fs_loader: No block device: %d\n",
265 ret);
266
267 return ret;
268 }
269 }
270 }
271#endif
272
273 return 0;
274};
275
276static const struct udevice_id fs_loader_ids[] = {
277 { .compatible = "u-boot,fs-loader"},
278 { }
279};
280
281U_BOOT_DRIVER(fs_loader) = {
282 .name = "fs-loader",
283 .id = UCLASS_FS_FIRMWARE_LOADER,
284 .of_match = fs_loader_ids,
285 .probe = fs_loader_probe,
286 .ofdata_to_platdata = fs_loader_ofdata_to_platdata,
287 .platdata_auto_alloc_size = sizeof(struct device_platdata),
288 .priv_auto_alloc_size = sizeof(struct firmware),
289};
290
291UCLASS_DRIVER(fs_loader) = {
292 .id = UCLASS_FS_FIRMWARE_LOADER,
293 .name = "fs-loader",
294};
295