3 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #include <linux/ctype.h>
26 #include <linux/types.h>
27 #include <asm/global_data.h>
30 #include <fdt_support.h>
34 * Global data (for the gd->bd)
36 DECLARE_GLOBAL_DATA_PTR;
39 * fdt_getprop_u32_default - Find a node and return it's property or a default
41 * @fdt: ptr to device tree
43 * @prop: property name
44 * @dflt: default value if the property isn't found
46 * Convenience function to find a node and return it's property or a
47 * default value if it doesn't exist.
49 u32 fdt_getprop_u32_default(void *fdt, const char *path, const char *prop,
55 off = fdt_path_offset(fdt, path);
59 val = fdt_getprop(fdt, off, prop, NULL);
67 * fdt_find_and_setprop: Find a node and set it's property
69 * @fdt: ptr to device tree
71 * @prop: property name
72 * @val: ptr to new value
73 * @len: length of new property value
74 * @create: flag to create the property if it doesn't exist
76 * Convenience function to directly set a property given the path to the node.
78 int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
79 const void *val, int len, int create)
81 int nodeoff = fdt_path_offset(fdt, node);
86 if ((!create) && (fdt_get_property(fdt, nodeoff, prop, 0) == NULL))
87 return 0; /* create flag not set; so exit quietly */
89 return fdt_setprop(fdt, nodeoff, prop, val, len);
92 #ifdef CONFIG_OF_STDOUT_VIA_ALIAS
93 static int fdt_fixup_stdout(void *fdt, int chosenoff)
96 #ifdef CONFIG_CONS_INDEX
98 char sername[9] = { 0 };
101 sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);
103 err = node = fdt_path_offset(fdt, "/aliases");
106 path = fdt_getprop(fdt, node, sername, &len);
108 char *p = malloc(len);
109 err = -FDT_ERR_NOSPACE;
111 memcpy(p, path, len);
112 err = fdt_setprop(fdt, chosenoff,
113 "linux,stdout-path", p, len);
122 printf("WARNING: could not set linux,stdout-path %s.\n",
129 int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force)
137 /* Find the "chosen" node. */
138 nodeoffset = fdt_path_offset (fdt, "/chosen");
140 /* If there is no "chosen" node in the blob return */
141 if (nodeoffset < 0) {
142 printf("fdt_initrd: %s\n", fdt_strerror(nodeoffset));
146 /* just return if initrd_start/end aren't valid */
147 if ((initrd_start == 0) || (initrd_end == 0))
150 total = fdt_num_mem_rsv(fdt);
153 * Look for an existing entry and update it. If we don't find
154 * the entry, we will j be the next available slot.
156 for (j = 0; j < total; j++) {
157 err = fdt_get_mem_rsv(fdt, j, &addr, &size);
158 if (addr == initrd_start) {
159 fdt_del_mem_rsv(fdt, j);
164 err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start + 1);
166 printf("fdt_initrd: %s\n", fdt_strerror(err));
170 path = fdt_getprop(fdt, nodeoffset, "linux,initrd-start", NULL);
171 if ((path == NULL) || force) {
172 tmp = __cpu_to_be32(initrd_start);
173 err = fdt_setprop(fdt, nodeoffset,
174 "linux,initrd-start", &tmp, sizeof(tmp));
177 "could not set linux,initrd-start %s.\n",
181 tmp = __cpu_to_be32(initrd_end);
182 err = fdt_setprop(fdt, nodeoffset,
183 "linux,initrd-end", &tmp, sizeof(tmp));
185 printf("WARNING: could not set linux,initrd-end %s.\n",
195 int fdt_chosen(void *fdt, int force)
199 char *str; /* used to set string properties */
202 err = fdt_check_header(fdt);
204 printf("fdt_chosen: %s\n", fdt_strerror(err));
209 * Find the "chosen" node.
211 nodeoffset = fdt_path_offset (fdt, "/chosen");
214 * If there is no "chosen" node in the blob, create it.
216 if (nodeoffset < 0) {
218 * Create a new node "/chosen" (offset 0 is root level)
220 nodeoffset = fdt_add_subnode(fdt, 0, "chosen");
221 if (nodeoffset < 0) {
222 printf("WARNING: could not create /chosen %s.\n",
223 fdt_strerror(nodeoffset));
229 * Create /chosen properites that don't exist in the fdt.
230 * If the property exists, update it only if the "force" parameter
233 str = getenv("bootargs");
235 path = fdt_getprop(fdt, nodeoffset, "bootargs", NULL);
236 if ((path == NULL) || force) {
237 err = fdt_setprop(fdt, nodeoffset,
238 "bootargs", str, strlen(str)+1);
240 printf("WARNING: could not set bootargs %s.\n",
245 #ifdef CONFIG_OF_STDOUT_VIA_ALIAS
246 path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
247 if ((path == NULL) || force)
248 err = fdt_fixup_stdout(fdt, nodeoffset);
251 #ifdef OF_STDOUT_PATH
252 path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
253 if ((path == NULL) || force) {
254 err = fdt_setprop(fdt, nodeoffset,
255 "linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);
257 printf("WARNING: could not set linux,stdout-path %s.\n",
265 void do_fixup_by_path(void *fdt, const char *path, const char *prop,
266 const void *val, int len, int create)
270 debug("Updating property '%s/%s' = ", path, prop);
271 for (i = 0; i < len; i++)
272 debug(" %.2x", *(u8*)(val+i));
275 int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create);
277 printf("Unable to update property %s:%s, err=%s\n",
278 path, prop, fdt_strerror(rc));
281 void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,
284 val = cpu_to_fdt32(val);
285 do_fixup_by_path(fdt, path, prop, &val, sizeof(val), create);
288 void do_fixup_by_prop(void *fdt,
289 const char *pname, const void *pval, int plen,
290 const char *prop, const void *val, int len,
296 debug("Updating property '%s' = ", prop);
297 for (i = 0; i < len; i++)
298 debug(" %.2x", *(u8*)(val+i));
301 off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen);
302 while (off != -FDT_ERR_NOTFOUND) {
303 if (create || (fdt_get_property(fdt, off, prop, 0) != NULL))
304 fdt_setprop(fdt, off, prop, val, len);
305 off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen);
309 void do_fixup_by_prop_u32(void *fdt,
310 const char *pname, const void *pval, int plen,
311 const char *prop, u32 val, int create)
313 val = cpu_to_fdt32(val);
314 do_fixup_by_prop(fdt, pname, pval, plen, prop, &val, 4, create);
317 void do_fixup_by_compat(void *fdt, const char *compat,
318 const char *prop, const void *val, int len, int create)
323 debug("Updating property '%s' = ", prop);
324 for (i = 0; i < len; i++)
325 debug(" %.2x", *(u8*)(val+i));
328 off = fdt_node_offset_by_compatible(fdt, -1, compat);
329 while (off != -FDT_ERR_NOTFOUND) {
330 if (create || (fdt_get_property(fdt, off, prop, 0) != NULL))
331 fdt_setprop(fdt, off, prop, val, len);
332 off = fdt_node_offset_by_compatible(fdt, off, compat);
336 void do_fixup_by_compat_u32(void *fdt, const char *compat,
337 const char *prop, u32 val, int create)
339 val = cpu_to_fdt32(val);
340 do_fixup_by_compat(fdt, compat, prop, &val, 4, create);
343 int fdt_fixup_memory(void *blob, u64 start, u64 size)
345 int err, nodeoffset, len = 0;
347 const u32 *addrcell, *sizecell;
349 err = fdt_check_header(blob);
351 printf("%s: %s\n", __FUNCTION__, fdt_strerror(err));
355 /* update, or add and update /memory node */
356 nodeoffset = fdt_path_offset(blob, "/memory");
357 if (nodeoffset < 0) {
358 nodeoffset = fdt_add_subnode(blob, 0, "memory");
360 printf("WARNING: could not create /memory: %s.\n",
361 fdt_strerror(nodeoffset));
364 err = fdt_setprop(blob, nodeoffset, "device_type", "memory",
367 printf("WARNING: could not set %s %s.\n", "device_type",
372 addrcell = fdt_getprop(blob, 0, "#address-cells", NULL);
373 /* use shifts and mask to ensure endianness */
374 if ((addrcell) && (*addrcell == 2)) {
375 tmp[0] = (start >> 56) & 0xff;
376 tmp[1] = (start >> 48) & 0xff;
377 tmp[2] = (start >> 40) & 0xff;
378 tmp[3] = (start >> 32) & 0xff;
379 tmp[4] = (start >> 24) & 0xff;
380 tmp[5] = (start >> 16) & 0xff;
381 tmp[6] = (start >> 8) & 0xff;
382 tmp[7] = (start ) & 0xff;
385 tmp[0] = (start >> 24) & 0xff;
386 tmp[1] = (start >> 16) & 0xff;
387 tmp[2] = (start >> 8) & 0xff;
388 tmp[3] = (start ) & 0xff;
392 sizecell = fdt_getprop(blob, 0, "#size-cells", NULL);
393 /* use shifts and mask to ensure endianness */
394 if ((sizecell) && (*sizecell == 2)) {
395 tmp[0+len] = (size >> 56) & 0xff;
396 tmp[1+len] = (size >> 48) & 0xff;
397 tmp[2+len] = (size >> 40) & 0xff;
398 tmp[3+len] = (size >> 32) & 0xff;
399 tmp[4+len] = (size >> 24) & 0xff;
400 tmp[5+len] = (size >> 16) & 0xff;
401 tmp[6+len] = (size >> 8) & 0xff;
402 tmp[7+len] = (size ) & 0xff;
405 tmp[0+len] = (size >> 24) & 0xff;
406 tmp[1+len] = (size >> 16) & 0xff;
407 tmp[2+len] = (size >> 8) & 0xff;
408 tmp[3+len] = (size ) & 0xff;
412 err = fdt_setprop(blob, nodeoffset, "reg", tmp, len);
414 printf("WARNING: could not set %s %s.\n",
415 "reg", fdt_strerror(err));
421 void fdt_fixup_ethernet(void *fdt)
424 char enet[16], *tmp, *end;
425 char mac[16] = "ethaddr";
427 unsigned char mac_addr[6];
429 node = fdt_path_offset(fdt, "/aliases");
434 while ((tmp = getenv(mac)) != NULL) {
435 sprintf(enet, "ethernet%d", i);
436 path = fdt_getprop(fdt, node, enet, NULL);
438 debug("No alias for %s\n", enet);
439 sprintf(mac, "eth%daddr", ++i);
443 for (j = 0; j < 6; j++) {
444 mac_addr[j] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
446 tmp = (*end) ? end+1 : end;
449 do_fixup_by_path(fdt, path, "mac-address", &mac_addr, 6, 0);
450 do_fixup_by_path(fdt, path, "local-mac-address",
453 sprintf(mac, "eth%daddr", ++i);
457 #ifdef CONFIG_HAS_FSL_DR_USB
458 void fdt_fixup_dr_usb(void *blob, bd_t *bd)
462 const char *compat = "fsl-usb2-dr";
463 const char *prop_mode = "dr_mode";
464 const char *prop_type = "phy_type";
468 mode = getenv("usb_dr_mode");
469 type = getenv("usb_phy_type");
473 node_offset = fdt_node_offset_by_compatible(blob, 0, compat);
474 if (node_offset < 0) {
475 printf("WARNING: could not find compatible node %s: %s.\n",
476 compat, fdt_strerror(node_offset));
481 err = fdt_setprop(blob, node_offset, prop_mode, mode,
484 printf("WARNING: could not set %s for %s: %s.\n",
485 prop_mode, compat, fdt_strerror(err));
489 err = fdt_setprop(blob, node_offset, prop_type, type,
492 printf("WARNING: could not set %s for %s: %s.\n",
493 prop_type, compat, fdt_strerror(err));
496 #endif /* CONFIG_HAS_FSL_DR_USB */
498 #if defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx)
500 * update crypto node properties to a specified revision of the SEC
501 * called with sec_rev == 0 if not on an mpc8xxxE processor
503 void fdt_fixup_crypto_node(void *blob, int sec_rev)
505 const struct sec_rev_prop {
508 u32 channel_fifo_len;
510 u32 descriptor_types_mask;
511 } sec_rev_prop_list [] = {
512 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
513 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
514 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
515 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
516 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
517 { 0x0303, 4, 24, 0x97c, 0x03ab0abf }, /* SEC 3.3 */
519 char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
520 sizeof("fsl,secX.Y")];
521 int crypto_node, sec_idx, err;
525 /* locate crypto node based on lowest common compatible */
526 crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
527 if (crypto_node == -FDT_ERR_NOTFOUND)
530 /* delete it if not on an E-processor */
531 if (crypto_node > 0 && !sec_rev) {
532 fdt_del_node(blob, crypto_node);
536 /* else we got called for possible uprev */
537 for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
538 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
541 if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
542 puts("warning: unknown SEC revision number\n");
546 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
547 err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
549 printf("WARNING: could not set crypto property: %s\n",
552 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
553 err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
555 printf("WARNING: could not set crypto property: %s\n",
558 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
559 err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
561 printf("WARNING: could not set crypto property: %s\n",
564 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
565 err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
567 printf("WARNING: could not set crypto property: %s\n",
571 while (sec_idx >= 0) {
572 p = compat_strlist + val;
573 val += sprintf(p, "fsl,sec%d.%d",
574 (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
575 sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
578 err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
580 printf("WARNING: could not set crypto property: %s\n",
583 #endif /* defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx) */
585 /* Resize the fdt to its actual size + a bit of padding */
586 int fdt_resize(void *blob)
596 total = fdt_num_mem_rsv(blob);
597 for (i = 0; i < total; i++) {
598 fdt_get_mem_rsv(blob, i, &addr, &size);
599 if (addr == (uint64_t)(u32)blob) {
600 fdt_del_mem_rsv(blob, i);
606 * Calculate the actual size of the fdt
607 * plus the size needed for two fdt_add_mem_rsv, one
608 * for the fdt itself and one for a possible initrd
610 actualsize = fdt_off_dt_strings(blob) +
611 fdt_size_dt_strings(blob) + 2*sizeof(struct fdt_reserve_entry);
613 /* Make it so the fdt ends on a page boundary */
614 actualsize = ALIGN(actualsize + ((uint)blob & 0xfff), 0x1000);
615 actualsize = actualsize - ((uint)blob & 0xfff);
617 /* Change the fdt header to reflect the correct size */
618 fdt_set_totalsize(blob, actualsize);
620 /* Add the new reservation */
621 ret = fdt_add_mem_rsv(blob, (uint)blob, actualsize);
629 #define CONFIG_SYS_PCI_NR_INBOUND_WIN 4
631 #define FDT_PCI_PREFETCH (0x40000000)
632 #define FDT_PCI_MEM32 (0x02000000)
633 #define FDT_PCI_IO (0x01000000)
634 #define FDT_PCI_MEM64 (0x03000000)
636 int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) {
638 int addrcell, sizecell, len, r;
640 /* sized based on pci addr cells, size-cells, & address-cells */
641 u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN];
643 addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1);
644 sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1);
646 dma_range = &dma_ranges[0];
647 for (r = 0; r < hose->region_count; r++) {
648 u64 bus_start, phys_start, size;
650 /* skip if !PCI_REGION_SYS_MEMORY */
651 if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY))
654 bus_start = (u64)hose->regions[r].bus_start;
655 phys_start = (u64)hose->regions[r].phys_start;
656 size = (u64)hose->regions[r].size;
659 if (size >= 0x100000000ull)
660 dma_range[0] |= FDT_PCI_MEM64;
662 dma_range[0] |= FDT_PCI_MEM32;
663 if (hose->regions[r].flags & PCI_REGION_PREFETCH)
664 dma_range[0] |= FDT_PCI_PREFETCH;
665 #ifdef CONFIG_SYS_PCI_64BIT
666 dma_range[1] = bus_start >> 32;
670 dma_range[2] = bus_start & 0xffffffff;
673 dma_range[3] = phys_start >> 32;
674 dma_range[4] = phys_start & 0xffffffff;
676 dma_range[3] = phys_start & 0xffffffff;
680 dma_range[3 + addrcell + 0] = size >> 32;
681 dma_range[3 + addrcell + 1] = size & 0xffffffff;
683 dma_range[3 + addrcell + 0] = size & 0xffffffff;
686 dma_range += (3 + addrcell + sizecell);
689 len = dma_range - &dma_ranges[0];
691 fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4);
697 #ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE
699 * This function can be used to update the size in the "reg" property
700 * of the NOR FLASH device nodes. This is necessary for boards with
701 * non-fixed NOR FLASH sizes.
703 int fdt_fixup_nor_flash_size(void *blob, int cs, u32 size)
705 char compat[][16] = { "cfi-flash", "jedec-flash" };
708 struct fdt_property *prop;
712 for (i = 0; i < 2; i++) {
713 off = fdt_node_offset_by_compatible(blob, -1, compat[i]);
714 while (off != -FDT_ERR_NOTFOUND) {
716 * Found one compatible node, now check if this one
719 prop = fdt_get_property_w(blob, off, "reg", &len);
721 reg = (u32 *)&prop->data[0];
724 fdt_setprop(blob, off, "reg", reg,
731 /* Move to next compatible node */
732 off = fdt_node_offset_by_compatible(blob, off,