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authorAndres Salomon <dilinger@queued.net>2010-08-29 23:57:28 -0400
committerGrant Likely <grant.likely@secretlab.ca>2010-10-09 04:36:12 -0400
commit9bdf6bab4ecfb6a8ca50c0c46f2365ef6c3e35b7 (patch)
tree0ebdb6e3e60d68de8f27592cd065db363966dc30 /arch/sparc
parent8d1255627d4ce9cb4b9d0a1c44b6c18d92e84a99 (diff)
sparc: break out some PROM device-tree building code out into drivers/of
Transitioning into making this useful for architectures other than sparc. This is a verbatim copy of all functions/variables that've been moved. Signed-off-by: Andres Salomon <dilinger@queued.net> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/kernel/prom_common.c190
1 files changed, 1 insertions, 189 deletions
diff --git a/arch/sparc/kernel/prom_common.c b/arch/sparc/kernel/prom_common.c
index 1f830da2ddf2..7b454f6413f7 100644
--- a/arch/sparc/kernel/prom_common.c
+++ b/arch/sparc/kernel/prom_common.c
@@ -26,8 +26,6 @@
26 26
27#include "prom.h" 27#include "prom.h"
28 28
29void (*prom_build_more)(struct device_node *dp, struct device_node ***nextp);
30
31struct device_node *of_console_device; 29struct device_node *of_console_device;
32EXPORT_SYMBOL(of_console_device); 30EXPORT_SYMBOL(of_console_device);
33 31
@@ -119,192 +117,6 @@ int of_find_in_proplist(const char *list, const char *match, int len)
119} 117}
120EXPORT_SYMBOL(of_find_in_proplist); 118EXPORT_SYMBOL(of_find_in_proplist);
121 119
122unsigned int prom_unique_id;
123
124static struct property * __init build_one_prop(phandle node, char *prev,
125 char *special_name,
126 void *special_val,
127 int special_len)
128{
129 static struct property *tmp = NULL;
130 struct property *p;
131 const char *name;
132
133 if (tmp) {
134 p = tmp;
135 memset(p, 0, sizeof(*p) + 32);
136 tmp = NULL;
137 } else {
138 p = prom_early_alloc(sizeof(struct property) + 32);
139 p->unique_id = prom_unique_id++;
140 }
141
142 p->name = (char *) (p + 1);
143 if (special_name) {
144 strcpy(p->name, special_name);
145 p->length = special_len;
146 p->value = prom_early_alloc(special_len);
147 memcpy(p->value, special_val, special_len);
148 } else {
149 if (prev == NULL) {
150 name = prom_firstprop(node, p->name);
151 } else {
152 name = prom_nextprop(node, prev, p->name);
153 }
154
155 if (!name || strlen(name) == 0) {
156 tmp = p;
157 return NULL;
158 }
159#ifdef CONFIG_SPARC32
160 strcpy(p->name, name);
161#endif
162 p->length = prom_getproplen(node, p->name);
163 if (p->length <= 0) {
164 p->length = 0;
165 } else {
166 int len;
167
168 p->value = prom_early_alloc(p->length + 1);
169 len = prom_getproperty(node, p->name, p->value,
170 p->length);
171 if (len <= 0)
172 p->length = 0;
173 ((unsigned char *)p->value)[p->length] = '\0';
174 }
175 }
176 return p;
177}
178
179static struct property * __init build_prop_list(phandle node)
180{
181 struct property *head, *tail;
182
183 head = tail = build_one_prop(node, NULL,
184 ".node", &node, sizeof(node));
185
186 tail->next = build_one_prop(node, NULL, NULL, NULL, 0);
187 tail = tail->next;
188 while(tail) {
189 tail->next = build_one_prop(node, tail->name,
190 NULL, NULL, 0);
191 tail = tail->next;
192 }
193
194 return head;
195}
196
197static char * __init get_one_property(phandle node, const char *name)
198{
199 char *buf = "<NULL>";
200 int len;
201
202 len = prom_getproplen(node, name);
203 if (len > 0) {
204 buf = prom_early_alloc(len);
205 len = prom_getproperty(node, name, buf, len);
206 }
207
208 return buf;
209}
210
211static struct device_node * __init prom_create_node(phandle node,
212 struct device_node *parent)
213{
214 struct device_node *dp;
215
216 if (!node)
217 return NULL;
218
219 dp = prom_early_alloc(sizeof(*dp));
220 dp->unique_id = prom_unique_id++;
221 dp->parent = parent;
222
223 kref_init(&dp->kref);
224
225 dp->name = get_one_property(node, "name");
226 dp->type = get_one_property(node, "device_type");
227 dp->phandle = node;
228
229 dp->properties = build_prop_list(node);
230
231 irq_trans_init(dp);
232
233 return dp;
234}
235
236char * __init build_full_name(struct device_node *dp)
237{
238 int len, ourlen, plen;
239 char *n;
240
241 plen = strlen(dp->parent->full_name);
242 ourlen = strlen(dp->path_component_name);
243 len = ourlen + plen + 2;
244
245 n = prom_early_alloc(len);
246 strcpy(n, dp->parent->full_name);
247 if (!of_node_is_root(dp->parent)) {
248 strcpy(n + plen, "/");
249 plen++;
250 }
251 strcpy(n + plen, dp->path_component_name);
252
253 return n;
254}
255
256static struct device_node * __init prom_build_tree(struct device_node *parent,
257 phandle node,
258 struct device_node ***nextp)
259{
260 struct device_node *ret = NULL, *prev_sibling = NULL;
261 struct device_node *dp;
262
263 while (1) {
264 dp = prom_create_node(node, parent);
265 if (!dp)
266 break;
267
268 if (prev_sibling)
269 prev_sibling->sibling = dp;
270
271 if (!ret)
272 ret = dp;
273 prev_sibling = dp;
274
275 *(*nextp) = dp;
276 *nextp = &dp->allnext;
277
278 dp->path_component_name = build_path_component(dp);
279 dp->full_name = build_full_name(dp);
280
281 dp->child = prom_build_tree(dp, prom_getchild(node), nextp);
282
283 if (prom_build_more)
284 prom_build_more(dp, nextp);
285
286 node = prom_getsibling(node);
287 }
288
289 return ret;
290}
291
292unsigned int prom_early_allocated __initdata; 120unsigned int prom_early_allocated __initdata;
293 121
294void __init prom_build_devicetree(void) 122#include "../../../drivers/of/pdt.c"
295{
296 struct device_node **nextp;
297
298 allnodes = prom_create_node(prom_root_node, NULL);
299 allnodes->path_component_name = "";
300 allnodes->full_name = "/";
301
302 nextp = &allnodes->allnext;
303 allnodes->child = prom_build_tree(allnodes,
304 prom_getchild(allnodes->phandle),
305 &nextp);
306 of_console_init();
307
308 printk("PROM: Built device tree with %u bytes of memory.\n",
309 prom_early_allocated);
310}