3 * Written by: Pantelis Antoniou <pantelis.antoniou@gmail.com>
4 * Updated by: Matthew McClintock <msm@freescale.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of
9 * the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #include <environment.h>
26 #ifdef CONFIG_OF_FLAT_TREE
28 #include <asm/errno.h>
35 /* align addr on a size boundary - adjust address up if needed -- Cort */
36 #define _ALIGN(addr,size) (((addr)+(size)-1)&(~((size)-1)))
37 #ifndef CONFIG_OF_BOOT_CPU
38 #define CONFIG_OF_BOOT_CPU 0
40 #define SIZE_OF_RSVMAP_ENTRY (2*sizeof(u64))
42 static void ft_put_word(struct ft_cxt *cxt, u32 v)
44 memmove(cxt->p + sizeof(u32), cxt->p, cxt->p_end - cxt->p);
46 *(u32 *) cxt->p = cpu_to_be32(v);
47 cxt->p += sizeof(u32);
48 cxt->p_end += sizeof(u32);
51 static inline void ft_put_bin(struct ft_cxt *cxt, const void *data, int sz)
53 int aligned_size = ((u8 *)_ALIGN((unsigned long)cxt->p + sz,
54 sizeof(u32))) - cxt->p;
56 memmove(cxt->p + aligned_size, cxt->p, cxt->p_end - cxt->p);
58 /* make sure the last bytes are zeroed */
59 memset(cxt->p + aligned_size - (aligned_size % sizeof(u32)), 0,
60 (aligned_size % sizeof(u32)));
62 memcpy(cxt->p, data, sz);
64 cxt->p += aligned_size;
65 cxt->p_end += aligned_size;
68 void ft_begin_node(struct ft_cxt *cxt, const char *name)
70 ft_put_word(cxt, OF_DT_BEGIN_NODE);
71 ft_put_bin(cxt, name, strlen(name) + 1);
74 void ft_end_node(struct ft_cxt *cxt)
76 ft_put_word(cxt, OF_DT_END_NODE);
79 void ft_nop(struct ft_cxt *cxt)
81 ft_put_word(cxt, OF_DT_NOP);
84 static int lookup_string(struct ft_cxt *cxt, const char *name)
89 while (p < cxt->p_end) {
90 if (strcmp((char *)p, name) == 0)
92 p += strlen((char *)p) + 1;
98 void ft_prop(struct ft_cxt *cxt, const char *name, const void *data, int sz)
102 off = lookup_string(cxt, name);
104 memcpy(cxt->p_end, name, strlen(name) + 1);
105 off = cxt->p_end - cxt->p;
106 cxt->p_end += strlen(name) + 1;
109 /* now put offset from beginning of *STRUCTURE* */
110 /* will be fixed up at the end */
111 ft_put_word(cxt, OF_DT_PROP);
112 ft_put_word(cxt, sz);
113 ft_put_word(cxt, off);
114 ft_put_bin(cxt, data, sz);
117 void ft_prop_str(struct ft_cxt *cxt, const char *name, const char *str)
119 ft_prop(cxt, name, str, strlen(str) + 1);
122 void ft_prop_int(struct ft_cxt *cxt, const char *name, int val)
124 u32 v = cpu_to_be32((u32) val);
126 ft_prop(cxt, name, &v, sizeof(u32));
129 /* pick up and start working on a tree in place */
130 void ft_init_cxt(struct ft_cxt *cxt, void *blob)
132 struct boot_param_header *bph = blob;
134 memset(cxt, 0, sizeof(*cxt));
137 bph->boot_cpuid_phys = CONFIG_OF_BOOT_CPU;
139 /* find beginning and end of reserve map table (zeros in last entry) */
140 cxt->p_rsvmap = (u8 *)bph + bph->off_mem_rsvmap;
141 while ( ((uint64_t *)cxt->p_rsvmap)[0] != 0 &&
142 ((uint64_t *)cxt->p_rsvmap)[1] != 0 ) {
143 cxt->p_rsvmap += SIZE_OF_RSVMAP_ENTRY;
146 cxt->p_start = (u8 *)bph + bph->off_dt_struct;
147 cxt->p_end = (u8 *)bph + bph->totalsize;
148 cxt->p = (u8 *)bph + bph->off_dt_strings;
151 /* add a reserver physical area to the rsvmap */
152 void ft_add_rsvmap(struct ft_cxt *cxt, u64 physstart, u64 physend)
154 memmove(cxt->p_rsvmap + SIZE_OF_RSVMAP_ENTRY, cxt->p_rsvmap,
155 cxt->p_end - cxt->p_rsvmap);
157 ((u64 *)cxt->p_rsvmap)[0] = cpu_to_be64(physstart);
158 ((u64 *)cxt->p_rsvmap)[1] = cpu_to_be64(physend);
159 ((u64 *)cxt->p_rsvmap)[2] = 0;
160 ((u64 *)cxt->p_rsvmap)[3] = 0;
162 cxt->p_rsvmap += SIZE_OF_RSVMAP_ENTRY;
163 cxt->p_start += SIZE_OF_RSVMAP_ENTRY;
164 cxt->p += SIZE_OF_RSVMAP_ENTRY;
165 cxt->p_end += SIZE_OF_RSVMAP_ENTRY;
168 void ft_end_tree(struct ft_cxt *cxt)
170 ft_put_word(cxt, OF_DT_END);
173 /* update the boot param header with correct values */
174 void ft_finalize_tree(struct ft_cxt *cxt) {
175 struct boot_param_header *bph = cxt->bph;
177 bph->totalsize = cxt->p_end - (u8 *)bph;
178 bph->off_dt_struct = cxt->p_start - (u8 *)bph;
179 bph->off_dt_strings = cxt->p - (u8 *)bph;
180 bph->dt_strings_size = cxt->p_end - cxt->p;
183 static inline int isprint(int c)
185 return c >= 0x20 && c <= 0x7e;
188 static int is_printable_string(const void *data, int len)
190 const char *s = data;
193 /* zero length is not */
197 /* must terminate with zero */
198 if (s[len - 1] != '\0')
202 while (*s && isprint(*s))
205 /* not zero, or not done yet */
206 if (*s != '\0' || (s + 1 - ss) < len)
212 static void print_data(const void *data, int len)
217 /* no data, don't print */
221 if (is_printable_string(data, len)) {
222 printf(" = \"%s\"", (char *)data);
228 printf(" = <%02x>", (*(u8 *) data) & 0xff);
230 case 2: /* half-word */
231 printf(" = <%04x>", be16_to_cpu(*(u16 *) data) & 0xffff);
234 printf(" = <%x>", be32_to_cpu(*(u32 *) data) & 0xffffffffU);
236 case 8: /* double-word */
237 printf(" = <%qx>", be64_to_cpu(*(uint64_t *) data));
239 default: /* anything else... hexdump */
241 for (i = 0, s = data; i < len; i++)
242 printf("%02x%s", s[i], i < len - 1 ? " " : "");
249 void ft_dump_blob(const void *bphp)
251 const struct boot_param_header *bph = bphp;
252 const uint64_t *p_rsvmap = (const uint64_t *)
253 ((const char *)bph + be32_to_cpu(bph->off_mem_rsvmap));
254 const u32 *p_struct = (const u32 *)
255 ((const char *)bph + be32_to_cpu(bph->off_dt_struct));
256 const u32 *p_strings = (const u32 *)
257 ((const char *)bph + be32_to_cpu(bph->off_dt_strings));
261 int depth, sz, shift;
265 if (be32_to_cpu(bph->magic) != OF_DT_HEADER) {
274 addr = be64_to_cpu(p_rsvmap[i * 2]);
275 size = be64_to_cpu(p_rsvmap[i * 2 + 1]);
276 if (addr == 0 && size == 0)
279 printf("/memreserve/ %qx %qx;\n", addr, size);
283 while ((tag = be32_to_cpu(*p++)) != OF_DT_END) {
285 /* printf("tag: 0x%08x (%d)\n", tag, p - p_struct); */
287 if (tag == OF_DT_BEGIN_NODE) {
289 p = (u32 *) _ALIGN((unsigned long)p + strlen(s) + 1, 4);
291 printf("%*s%s {\n", depth * shift, "", s);
297 if (tag == OF_DT_END_NODE) {
300 printf("%*s};\n", depth * shift, "");
304 if (tag == OF_DT_NOP) {
305 printf("%*s[NOP]\n", depth * shift, "");
309 if (tag != OF_DT_PROP) {
310 fprintf(stderr, "%*s ** Unknown tag 0x%08x at 0x%x\n",
311 depth * shift, "", tag, --p);
314 sz = be32_to_cpu(*p++);
315 s = (const char *)p_strings + be32_to_cpu(*p++);
317 p = (const u32 *)_ALIGN((unsigned long)p + sz, 4);
318 printf("%*s%s", depth * shift, "", s);
324 void ft_backtrack_node(struct ft_cxt *cxt)
328 while (be32_to_cpu(*(u32 *) (cxt->p - i)) != OF_DT_END_NODE)
331 memmove (cxt->p - i, cxt->p, cxt->p_end - cxt->p);
337 void *ft_get_prop(void *bphp, const char *propname, int *szp)
339 struct boot_param_header *bph = bphp;
341 (uint32_t *) ((char *)bph + be32_to_cpu(bph->off_dt_struct));
342 uint32_t *p_strings =
343 (uint32_t *) ((char *)bph + be32_to_cpu(bph->off_dt_strings));
344 uint32_t version = be32_to_cpu(bph->version);
350 static char path[256], prop[256];
355 while ((tag = be32_to_cpu(*p++)) != OF_DT_END) {
357 if (tag == OF_DT_BEGIN_NODE) {
359 p = (uint32_t *) _ALIGN((unsigned long)p + strlen(s) +
366 if (tag == OF_DT_END_NODE) {
367 path[strlen(path) - 1] = '\0';
368 ss = strrchr(path, '/');
374 if (tag == OF_DT_NOP)
377 if (tag != OF_DT_PROP)
380 sz = be32_to_cpu(*p++);
381 s = (char *)p_strings + be32_to_cpu(*p++);
382 if (version < 0x10 && sz >= 8)
383 p = (uint32_t *) _ALIGN((unsigned long)p, 8);
385 p = (uint32_t *) _ALIGN((unsigned long)p + sz, 4);
390 if (strcmp(prop, propname) == 0) {
399 /********************************************************************/
401 /* Function that returns a character from the environment */
402 extern uchar(*env_get_char) (int);
404 #define BDM(x) { .name = #x, .offset = offsetof(bd_t, bi_ ##x ) }
406 #ifdef CONFIG_OF_HAS_BD_T
407 static const struct {
418 #if defined(CONFIG_5xx) || defined(CONFIG_8xx) || defined(CONFIG_8260) \
419 || defined(CONFIG_E500)
422 #if defined(CONFIG_MPC5xxx)
425 #if defined(CONFIG_MPC83XX)
428 #if defined(CONFIG_MPC8220)
446 #if defined(CONFIG_MPC5xxx)
454 void ft_setup(void *blob, bd_t * bd, ulong initrd_start, ulong initrd_end)
460 #if defined(CONFIG_OF_HAS_UBOOT_ENV)
463 #if defined(CONFIG_OF_HAS_BD_T)
466 #if defined(CONFIG_OF_HAS_UBOOT_ENV) || defined(CONFIG_OF_HAS_BD_T)
468 static char tmpenv[256];
471 /* disable OF tree; booting old kernel */
472 if (getenv("disable_of") != NULL) {
473 memcpy(blob, bd, sizeof(*bd));
478 printf ("recieved oftree\n");
482 ft_init_cxt(&cxt, blob);
484 if (initrd_start && initrd_end)
485 ft_add_rsvmap(&cxt, initrd_start, initrd_end - initrd_start + 1);
488 ft_backtrack_node(&cxt);
490 #ifdef CONFIG_OF_HAS_UBOOT_ENV
491 ft_begin_node(&cxt, "u-boot-env");
493 for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
494 char *s, *lval, *rval;
496 for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) ;
498 for (k = i; k < nxt && s < &tmpenv[sizeof(tmpenv) - 1]; ++k)
499 *s++ = env_get_char(k);
502 s = strchr(tmpenv, '=');
508 ft_prop_str(&cxt, lval, rval);
514 ft_begin_node(&cxt, "chosen");
515 ft_prop_str(&cxt, "name", "chosen");
517 ft_prop_str(&cxt, "bootargs", getenv("bootargs"));
518 ft_prop_int(&cxt, "linux,platform", 0x600); /* what is this? */
519 if (initrd_start && initrd_end) {
520 ft_prop_int(&cxt, "linux,initrd-start", initrd_start);
521 ft_prop_int(&cxt, "linux,initrd-end", initrd_end);
523 #ifdef OF_STDOUT_PATH
524 ft_prop_str(&cxt, "linux,stdout-path", OF_STDOUT_PATH);
529 ft_end_node(&cxt); /* end root */
532 ft_finalize_tree(&cxt);
534 #ifdef CONFIG_OF_HAS_BD_T
535 /* paste the bd_t at the end of the flat tree */
537 be32_to_cpu(((struct boot_param_header *)blob)->totalsize);
538 memcpy(end, bd, sizeof(*bd));
543 #ifdef CONFIG_OF_HAS_BD_T
544 for (i = 0; i < sizeof(bd_map)/sizeof(bd_map[0]); i++) {
547 sprintf(tmpenv, "/bd_t/%s", bd_map[i].name);
548 v = *(uint32_t *)((char *)bd + bd_map[i].offset);
550 p = ft_get_prop(blob, tmpenv, &len);
555 p = ft_get_prop(blob, "/bd_t/enetaddr", &len);
557 memcpy(p, bd->bi_enetaddr, 6);
559 p = ft_get_prop(blob, "/bd_t/ethspeed", &len);
561 *p = cpu_to_be32((uint32_t) bd->bi_ethspeed);
564 clock = bd->bi_intfreq;
565 p = ft_get_prop(blob, "/cpus/" OF_CPU "/clock-frequency", &len);
567 *p = cpu_to_be32(clock);
571 p = ft_get_prop(blob, "/cpus/" OF_CPU "/timebase-frequency", &len);
573 *p = cpu_to_be32(clock);
575 #endif /* __powerpc__ */
577 #ifdef CONFIG_OF_BOARD_SETUP
578 ft_board_setup(blob, bd);
581 /* in case the size changed in the platform code */
582 ft_finalize_tree(&cxt);
585 printf("final OF-tree\n");