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2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/arch/sparc/kernel/prom_64.c
..
..
@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
1
2
 /*
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3
  * Procedures for creating, accessing and interpreting the device tree.
3
4
  *
..
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@@ -8,11 +9,6 @@
8
9
  *    {engebret|bergner}@us.ibm.com 
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10
  *
10
11
  *  Adapted for sparc64 by David S. Miller davem@davemloft.net
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- *
12
- *      This program is free software; you can redistribute it and/or
13
- *      modify it under the terms of the GNU General Public License
14
- *      as published by the Free Software Foundation; either version
15
- *      2 of the License, or (at your option) any later version.
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12
  */
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13
 
18
14
 #include <linux/memblock.h>
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@@ -34,16 +30,13 @@
34
30
 
35
31
 void * __init prom_early_alloc(unsigned long size)
36
32
 {
37
-	unsigned long paddr = memblock_alloc(size, SMP_CACHE_BYTES);
38
-	void *ret;
33
+	void *ret = memblock_alloc(size, SMP_CACHE_BYTES);
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34
 
40
-	if (!paddr) {
35
+	if (!ret) {
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36
 		prom_printf("prom_early_alloc(%lu) failed\n", size);
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37
 		prom_halt();
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38
 	}
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39
 
45
-	ret = __va(paddr);
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-	memset(ret, 0, size);
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40
 	prom_early_allocated += size;
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41
 
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42
 	return ret;
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@@ -72,6 +65,7 @@
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65
  */
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66
 static void __init sun4v_path_component(struct device_node *dp, char *tmp_buf)
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67
 {
68
+	const char *name = of_get_property(dp, "name", NULL);
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69
 	struct linux_prom64_registers *regs;
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70
 	struct property *rprop;
77
71
 	u32 high_bits, low_bits, type;
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@@ -83,7 +77,7 @@
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77
 	regs = rprop->value;
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78
 	if (!of_node_is_root(dp->parent)) {
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79
 		sprintf(tmp_buf, "%s@%x,%x",
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-			dp->name,
80
+			name,
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81
 			(unsigned int) (regs->phys_addr >> 32UL),
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82
 			(unsigned int) (regs->phys_addr & 0xffffffffUL));
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83
 		return;
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@@ -98,21 +92,22 @@
98
92
 
99
93
 		if (low_bits)
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94
 			sprintf(tmp_buf, "%s@%s%x,%x",
101
-				dp->name, prefix,
95
+				name, prefix,
102
96
 				high_bits, low_bits);
103
97
 		else
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98
 			sprintf(tmp_buf, "%s@%s%x",
105
-				dp->name,
99
+				name,
106
100
 				prefix,
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101
 				high_bits);
108
102
 	} else if (type == 12) {
109
103
 		sprintf(tmp_buf, "%s@%x",
110
-			dp->name, high_bits);
104
+			name, high_bits);
111
105
 	}
112
106
 }
113
107
 
114
108
 static void __init sun4u_path_component(struct device_node *dp, char *tmp_buf)
115
109
 {
110
+	const char *name = of_get_property(dp, "name", NULL);
116
111
 	struct linux_prom64_registers *regs;
117
112
 	struct property *prop;
118
113
 
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@@ -123,7 +118,7 @@
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118
 	regs = prop->value;
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119
 	if (!of_node_is_root(dp->parent)) {
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120
 		sprintf(tmp_buf, "%s@%x,%x",
126
-			dp->name,
121
+			name,
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122
 			(unsigned int) (regs->phys_addr >> 32UL),
128
123
 			(unsigned int) (regs->phys_addr & 0xffffffffUL));
129
124
 		return;
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@@ -139,7 +134,7 @@
139
134
 			mask = 0x7fffff;
140
135
 
141
136
 		sprintf(tmp_buf, "%s@%x,%x",
142
-			dp->name,
137
+			name,
143
138
 			*(u32 *)prop->value,
144
139
 			(unsigned int) (regs->phys_addr & mask));
145
140
 	}
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@@ -148,6 +143,7 @@
148
143
 /* "name@slot,offset"  */
149
144
 static void __init sbus_path_component(struct device_node *dp, char *tmp_buf)
150
145
 {
146
+	const char *name = of_get_property(dp, "name", NULL);
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147
 	struct linux_prom_registers *regs;
152
148
 	struct property *prop;
153
149
 
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@@ -157,7 +153,7 @@
157
153
 
158
154
 	regs = prop->value;
159
155
 	sprintf(tmp_buf, "%s@%x,%x",
160
-		dp->name,
156
+		name,
161
157
 		regs->which_io,
162
158
 		regs->phys_addr);
163
159
 }
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@@ -165,6 +161,7 @@
165
161
 /* "name@devnum[,func]" */
166
162
 static void __init pci_path_component(struct device_node *dp, char *tmp_buf)
167
163
 {
164
+	const char *name = of_get_property(dp, "name", NULL);
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165
 	struct linux_prom_pci_registers *regs;
169
166
 	struct property *prop;
170
167
 	unsigned int devfn;
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@@ -177,12 +174,12 @@
177
174
 	devfn = (regs->phys_hi >> 8) & 0xff;
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175
 	if (devfn & 0x07) {
179
176
 		sprintf(tmp_buf, "%s@%x,%x",
180
-			dp->name,
177
+			name,
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178
 			devfn >> 3,
182
179
 			devfn & 0x07);
183
180
 	} else {
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181
 		sprintf(tmp_buf, "%s@%x",
185
-			dp->name,
182
+			name,
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183
 			devfn >> 3);
187
184
 	}
188
185
 }
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@@ -190,6 +187,7 @@
190
187
 /* "name@UPA_PORTID,offset" */
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188
 static void __init upa_path_component(struct device_node *dp, char *tmp_buf)
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189
 {
190
+	const char *name = of_get_property(dp, "name", NULL);
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191
 	struct linux_prom64_registers *regs;
194
192
 	struct property *prop;
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193
 
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@@ -204,7 +202,7 @@
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202
 		return;
205
203
 
206
204
 	sprintf(tmp_buf, "%s@%x,%x",
207
-		dp->name,
205
+		name,
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206
 		*(u32 *) prop->value,
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207
 		(unsigned int) (regs->phys_addr & 0xffffffffUL));
210
208
 }
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@@ -212,6 +210,7 @@
212
210
 /* "name@reg" */
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211
 static void __init vdev_path_component(struct device_node *dp, char *tmp_buf)
214
212
 {
213
+	const char *name = of_get_property(dp, "name", NULL);
215
214
 	struct property *prop;
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215
 	u32 *regs;
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216
 
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@@ -221,12 +220,13 @@
221
220
 
222
221
 	regs = prop->value;
223
222
 
224
-	sprintf(tmp_buf, "%s@%x", dp->name, *regs);
223
+	sprintf(tmp_buf, "%s@%x", name, *regs);
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224
 }
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225
 
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 /* "name@addrhi,addrlo" */
228
227
 static void __init ebus_path_component(struct device_node *dp, char *tmp_buf)
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228
 {
229
+	const char *name = of_get_property(dp, "name", NULL);
230
230
 	struct linux_prom64_registers *regs;
231
231
 	struct property *prop;
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232
 
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@@ -237,7 +237,7 @@
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237
 	regs = prop->value;
238
238
 
239
239
 	sprintf(tmp_buf, "%s@%x,%x",
240
-		dp->name,
240
+		name,
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241
 		(unsigned int) (regs->phys_addr >> 32UL),
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242
 		(unsigned int) (regs->phys_addr & 0xffffffffUL));
243
243
 }
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@@ -245,6 +245,7 @@
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245
 /* "name@bus,addr" */
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246
 static void __init i2c_path_component(struct device_node *dp, char *tmp_buf)
247
247
 {
248
+	const char *name = of_get_property(dp, "name", NULL);
248
249
 	struct property *prop;
249
250
 	u32 *regs;
250
251
 
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@@ -258,12 +259,13 @@
258
259
 	 * property of the i2c bus node etc. etc.
259
260
 	 */
260
261
 	sprintf(tmp_buf, "%s@%x,%x",
261
-		dp->name, regs[0], regs[1]);
262
+		name, regs[0], regs[1]);
262
263
 }
263
264
 
264
265
 /* "name@reg0[,reg1]" */
265
266
 static void __init usb_path_component(struct device_node *dp, char *tmp_buf)
266
267
 {
268
+	const char *name = of_get_property(dp, "name", NULL);
267
269
 	struct property *prop;
268
270
 	u32 *regs;
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271
 
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@@ -275,16 +277,17 @@
275
277
 
276
278
 	if (prop->length == sizeof(u32) || regs[1] == 1) {
277
279
 		sprintf(tmp_buf, "%s@%x",
278
-			dp->name, regs[0]);
280
+			name, regs[0]);
279
281
 	} else {
280
282
 		sprintf(tmp_buf, "%s@%x,%x",
281
-			dp->name, regs[0], regs[1]);
283
+			name, regs[0], regs[1]);
282
284
 	}
283
285
 }
284
286
 
285
287
 /* "name@reg0reg1[,reg2reg3]" */
286
288
 static void __init ieee1394_path_component(struct device_node *dp, char *tmp_buf)
287
289
 {
290
+	const char *name = of_get_property(dp, "name", NULL);
288
291
 	struct property *prop;
289
292
 	u32 *regs;
290
293
 
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@@ -296,10 +299,10 @@
296
299
 
297
300
 	if (regs[2] || regs[3]) {
298
301
 		sprintf(tmp_buf, "%s@%08x%08x,%04x%08x",
299
-			dp->name, regs[0], regs[1], regs[2], regs[3]);
302
+			name, regs[0], regs[1], regs[2], regs[3]);
300
303
 	} else {
301
304
 		sprintf(tmp_buf, "%s@%08x%08x",
302
-			dp->name, regs[0], regs[1]);
305
+			name, regs[0], regs[1]);
303
306
 	}
304
307
 }
305
308
 
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@@ -308,37 +311,37 @@
308
311
 	struct device_node *parent = dp->parent;
309
312
 
310
313
 	if (parent != NULL) {
311
-		if (!strcmp(parent->type, "pci") ||
312
-		    !strcmp(parent->type, "pciex")) {
314
+		if (of_node_is_type(parent, "pci") ||
315
+		    of_node_is_type(parent, "pciex")) {
313
316
 			pci_path_component(dp, tmp_buf);
314
317
 			return;
315
318
 		}
316
-		if (!strcmp(parent->type, "sbus")) {
319
+		if (of_node_is_type(parent, "sbus")) {
317
320
 			sbus_path_component(dp, tmp_buf);
318
321
 			return;
319
322
 		}
320
-		if (!strcmp(parent->type, "upa")) {
323
+		if (of_node_is_type(parent, "upa")) {
321
324
 			upa_path_component(dp, tmp_buf);
322
325
 			return;
323
326
 		}
324
-		if (!strcmp(parent->type, "ebus")) {
327
+		if (of_node_is_type(parent, "ebus")) {
325
328
 			ebus_path_component(dp, tmp_buf);
326
329
 			return;
327
330
 		}
328
-		if (!strcmp(parent->name, "usb") ||
329
-		    !strcmp(parent->name, "hub")) {
331
+		if (of_node_name_eq(parent, "usb") ||
332
+		    of_node_name_eq(parent, "hub")) {
330
333
 			usb_path_component(dp, tmp_buf);
331
334
 			return;
332
335
 		}
333
-		if (!strcmp(parent->type, "i2c")) {
336
+		if (of_node_is_type(parent, "i2c")) {
334
337
 			i2c_path_component(dp, tmp_buf);
335
338
 			return;
336
339
 		}
337
-		if (!strcmp(parent->type, "firewire")) {
340
+		if (of_node_is_type(parent, "firewire")) {
338
341
 			ieee1394_path_component(dp, tmp_buf);
339
342
 			return;
340
343
 		}
341
-		if (!strcmp(parent->type, "virtual-devices")) {
344
+		if (of_node_is_type(parent, "virtual-devices")) {
342
345
 			vdev_path_component(dp, tmp_buf);
343
346
 			return;
344
347
 		}
..
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@@ -356,12 +359,13 @@
356
359
 
357
360
 char * __init build_path_component(struct device_node *dp)
358
361
 {
362
+	const char *name = of_get_property(dp, "name", NULL);
359
363
 	char tmp_buf[64], *n;
360
364
 
361
365
 	tmp_buf[0] = '\0';
362
366
 	__build_path_component(dp, tmp_buf);
363
367
 	if (tmp_buf[0] == '\0')
364
-		strcpy(tmp_buf, dp->name);
368
+		strcpy(tmp_buf, name);
365
369
 
366
370
 	n = prom_early_alloc(strlen(tmp_buf) + 1);
367
371
 	strcpy(n, tmp_buf);
..
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@@ -594,7 +598,6 @@
594
598
 {
595
599
 	char *msg = "OF stdout device is: %s\n";
596
600
 	struct device_node *dp;
597
-	const char *type;
598
601
 	phandle node;
599
602
 
600
603
 	of_console_path = prom_early_alloc(256);
..
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@@ -617,13 +620,8 @@
617
620
 	}
618
621
 
619
622
 	dp = of_find_node_by_phandle(node);
620
-	type = of_get_property(dp, "device_type", NULL);
621
-	if (!type) {
622
-		prom_printf("Console stdout lacks device_type property.\n");
623
-		prom_halt();
624
-	}
625
623
 
626
-	if (strcmp(type, "display") && strcmp(type, "serial")) {
624
+	if (!of_node_is_type(dp, "display") && !of_node_is_type(dp, "serial")) {
627
625
 		prom_printf("Console device_type is neither display "
628
626
 			    "nor serial.\n");
629
627
 		prom_halt();