2 * Copyright (c) 2011 The Chromium OS Authors.
3 * SPDX-License-Identifier: GPL-2.0+
10 #include <dm/of_extra.h>
13 #include <fdt_support.h>
16 #include <asm/sections.h>
17 #include <linux/ctype.h>
18 #include <linux/lzo.h>
20 DECLARE_GLOBAL_DATA_PTR;
23 * Here are the type we know about. One day we might allow drivers to
24 * register. For now we just put them here. The COMPAT macro allows us to
25 * turn this into a sparse list later, and keeps the ID with the name.
27 * NOTE: This list is basically a TODO list for things that need to be
28 * converted to driver model. So don't add new things here unless there is a
29 * good reason why driver-model conversion is infeasible. Examples include
30 * things which are used before driver model is available.
32 #define COMPAT(id, name) name
33 static const char * const compat_names[COMPAT_COUNT] = {
34 COMPAT(UNKNOWN, "<none>"),
35 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
36 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
37 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
38 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
39 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
40 COMPAT(SMSC_LAN9215, "smsc,lan9215"),
41 COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
42 COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"),
43 COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"),
44 COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"),
45 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
46 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
47 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
48 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
49 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
50 COMPAT(SAMSUNG_EXYNOS_MMC, "samsung,exynos-mmc"),
51 COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686"),
52 COMPAT(GENERIC_SPI_FLASH, "spi-flash"),
53 COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"),
54 COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"),
55 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
56 COMPAT(INTEL_MICROCODE, "intel,microcode"),
57 COMPAT(AMS_AS3722, "ams,as3722"),
58 COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
59 COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
60 COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"),
61 COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"),
62 COMPAT(INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"),
63 COMPAT(INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"),
64 COMPAT(INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"),
65 COMPAT(COMPAT_SUNXI_NAND, "allwinner,sun4i-a10-nand"),
66 COMPAT(ALTERA_SOCFPGA_CLK, "altr,clk-mgr"),
67 COMPAT(ALTERA_SOCFPGA_PINCTRL_SINGLE, "pinctrl-single"),
68 COMPAT(ALTERA_SOCFPGA_H2F_BRG, "altr,socfpga-hps2fpga-bridge"),
69 COMPAT(ALTERA_SOCFPGA_LWH2F_BRG, "altr,socfpga-lwhps2fpga-bridge"),
70 COMPAT(ALTERA_SOCFPGA_F2H_BRG, "altr,socfpga-fpga2hps-bridge"),
71 COMPAT(ALTERA_SOCFPGA_F2SDR0, "altr,socfpga-fpga2sdram0-bridge"),
72 COMPAT(ALTERA_SOCFPGA_F2SDR1, "altr,socfpga-fpga2sdram1-bridge"),
73 COMPAT(ALTERA_SOCFPGA_F2SDR2, "altr,socfpga-fpga2sdram2-bridge"),
74 COMPAT(ALTERA_SOCFPGA_FPGA0, "altr,socfpga-a10-fpga-mgr"),
75 COMPAT(ALTERA_SOCFPGA_NOC, "altr,socfpga-a10-noc"),
78 const char *fdtdec_get_compatible(enum fdt_compat_id id)
80 /* We allow reading of the 'unknown' ID for testing purposes */
81 assert(id >= 0 && id < COMPAT_COUNT);
82 return compat_names[id];
85 fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
86 const char *prop_name, int index, int na, int ns,
87 fdt_size_t *sizep, bool translate)
89 const fdt32_t *prop, *prop_end;
90 const fdt32_t *prop_addr, *prop_size, *prop_after_size;
94 debug("%s: %s: ", __func__, prop_name);
96 if (na > (sizeof(fdt_addr_t) / sizeof(fdt32_t))) {
97 debug("(na too large for fdt_addr_t type)\n");
98 return FDT_ADDR_T_NONE;
101 if (ns > (sizeof(fdt_size_t) / sizeof(fdt32_t))) {
102 debug("(ns too large for fdt_size_t type)\n");
103 return FDT_ADDR_T_NONE;
106 prop = fdt_getprop(blob, node, prop_name, &len);
108 debug("(not found)\n");
109 return FDT_ADDR_T_NONE;
111 prop_end = prop + (len / sizeof(*prop));
113 prop_addr = prop + (index * (na + ns));
114 prop_size = prop_addr + na;
115 prop_after_size = prop_size + ns;
116 if (prop_after_size > prop_end) {
117 debug("(not enough data: expected >= %d cells, got %d cells)\n",
118 (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
119 return FDT_ADDR_T_NONE;
122 #if CONFIG_IS_ENABLED(OF_TRANSLATE)
124 addr = fdt_translate_address(blob, node, prop_addr);
127 addr = fdtdec_get_number(prop_addr, na);
130 *sizep = fdtdec_get_number(prop_size, ns);
131 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
132 (unsigned long long)*sizep);
134 debug("addr=%08llx\n", (unsigned long long)addr);
140 fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
141 int node, const char *prop_name, int index, fdt_size_t *sizep,
146 debug("%s: ", __func__);
148 na = fdt_address_cells(blob, parent);
150 debug("(bad #address-cells)\n");
151 return FDT_ADDR_T_NONE;
154 ns = fdt_size_cells(blob, parent);
156 debug("(bad #size-cells)\n");
157 return FDT_ADDR_T_NONE;
160 debug("na=%d, ns=%d, ", na, ns);
162 return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
163 ns, sizep, translate);
166 fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
167 const char *prop_name, int index, fdt_size_t *sizep,
172 debug("%s: ", __func__);
174 parent = fdt_parent_offset(blob, node);
176 debug("(no parent found)\n");
177 return FDT_ADDR_T_NONE;
180 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
181 index, sizep, translate);
184 fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
185 const char *prop_name, fdt_size_t *sizep)
187 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
189 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
190 sizeof(fdt_addr_t) / sizeof(fdt32_t),
194 fdt_addr_t fdtdec_get_addr(const void *blob, int node,
195 const char *prop_name)
197 return fdtdec_get_addr_size(blob, node, prop_name, NULL);
200 #if defined(CONFIG_PCI) && defined(CONFIG_DM_PCI)
201 int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type,
202 const char *prop_name, struct fdt_pci_addr *addr)
208 debug("%s: %s: ", __func__, prop_name);
211 * If we follow the pci bus bindings strictly, we should check
212 * the value of the node's parent node's #address-cells and
213 * #size-cells. They need to be 3 and 2 accordingly. However,
214 * for simplicity we skip the check here.
216 cell = fdt_getprop(blob, node, prop_name, &len);
220 if ((len % FDT_PCI_REG_SIZE) == 0) {
221 int num = len / FDT_PCI_REG_SIZE;
224 for (i = 0; i < num; i++) {
225 debug("pci address #%d: %08lx %08lx %08lx\n", i,
226 (ulong)fdt32_to_cpu(cell[0]),
227 (ulong)fdt32_to_cpu(cell[1]),
228 (ulong)fdt32_to_cpu(cell[2]));
229 if ((fdt32_to_cpu(*cell) & type) == type) {
230 addr->phys_hi = fdt32_to_cpu(cell[0]);
231 addr->phys_mid = fdt32_to_cpu(cell[1]);
232 addr->phys_lo = fdt32_to_cpu(cell[1]);
235 cell += (FDT_PCI_ADDR_CELLS +
251 debug("(not found)\n");
255 int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
257 const char *list, *end;
260 list = fdt_getprop(blob, node, "compatible", &len);
269 if (len >= strlen("pciVVVV,DDDD")) {
270 s = strstr(list, "pci");
273 * check if the string is something like pciVVVV,DDDD.RR
274 * or just pciVVVV,DDDD
276 if (s && s[7] == ',' &&
277 (s[12] == '.' || s[12] == 0)) {
279 *vendor = simple_strtol(s, NULL, 16);
282 *device = simple_strtol(s, NULL, 16);
293 int fdtdec_get_pci_bar32(struct udevice *dev, struct fdt_pci_addr *addr,
298 /* extract the bar number from fdt_pci_addr */
299 barnum = addr->phys_hi & 0xff;
300 if ((barnum < PCI_BASE_ADDRESS_0) || (barnum > PCI_CARDBUS_CIS))
303 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
304 *bar = dm_pci_read_bar32(dev, barnum);
310 uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
311 uint64_t default_val)
313 const uint64_t *cell64;
316 cell64 = fdt_getprop(blob, node, prop_name, &length);
317 if (!cell64 || length < sizeof(*cell64))
320 return fdt64_to_cpu(*cell64);
323 int fdtdec_get_is_enabled(const void *blob, int node)
328 * It should say "okay", so only allow that. Some fdts use "ok" but
329 * this is a bug. Please fix your device tree source file. See here
332 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
334 cell = fdt_getprop(blob, node, "status", NULL);
336 return 0 == strcmp(cell, "okay");
340 enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
342 enum fdt_compat_id id;
344 /* Search our drivers */
345 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
346 if (0 == fdt_node_check_compatible(blob, node,
349 return COMPAT_UNKNOWN;
352 int fdtdec_next_compatible(const void *blob, int node,
353 enum fdt_compat_id id)
355 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
358 int fdtdec_next_compatible_subnode(const void *blob, int node,
359 enum fdt_compat_id id, int *depthp)
362 node = fdt_next_node(blob, node, depthp);
363 } while (*depthp > 1);
365 /* If this is a direct subnode, and compatible, return it */
366 if (*depthp == 1 && 0 == fdt_node_check_compatible(
367 blob, node, compat_names[id]))
370 return -FDT_ERR_NOTFOUND;
373 int fdtdec_next_alias(const void *blob, const char *name,
374 enum fdt_compat_id id, int *upto)
376 #define MAX_STR_LEN 20
377 char str[MAX_STR_LEN + 20];
380 /* snprintf() is not available */
381 assert(strlen(name) < MAX_STR_LEN);
382 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
383 node = fdt_path_offset(blob, str);
386 err = fdt_node_check_compatible(blob, node, compat_names[id]);
390 return -FDT_ERR_NOTFOUND;
395 int fdtdec_find_aliases_for_id(const void *blob, const char *name,
396 enum fdt_compat_id id, int *node_list, int maxcount)
398 memset(node_list, '\0', sizeof(*node_list) * maxcount);
400 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
403 /* TODO: Can we tighten this code up a little? */
404 int fdtdec_add_aliases_for_id(const void *blob, const char *name,
405 enum fdt_compat_id id, int *node_list, int maxcount)
407 int name_len = strlen(name);
415 /* find the alias node if present */
416 alias_node = fdt_path_offset(blob, "/aliases");
419 * start with nothing, and we can assume that the root node can't
422 memset(nodes, '\0', sizeof(nodes));
424 /* First find all the compatible nodes */
425 for (node = count = 0; node >= 0 && count < maxcount;) {
426 node = fdtdec_next_compatible(blob, node, id);
428 nodes[count++] = node;
431 debug("%s: warning: maxcount exceeded with alias '%s'\n",
434 /* Now find all the aliases */
435 for (offset = fdt_first_property_offset(blob, alias_node);
437 offset = fdt_next_property_offset(blob, offset)) {
438 const struct fdt_property *prop;
444 prop = fdt_get_property_by_offset(blob, offset, NULL);
445 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
446 if (prop->len && 0 == strncmp(path, name, name_len))
447 node = fdt_path_offset(blob, prop->data);
451 /* Get the alias number */
452 number = simple_strtoul(path + name_len, NULL, 10);
453 if (number < 0 || number >= maxcount) {
454 debug("%s: warning: alias '%s' is out of range\n",
459 /* Make sure the node we found is actually in our list! */
461 for (j = 0; j < count; j++)
462 if (nodes[j] == node) {
468 debug("%s: warning: alias '%s' points to a node "
469 "'%s' that is missing or is not compatible "
470 " with '%s'\n", __func__, path,
471 fdt_get_name(blob, node, NULL),
477 * Add this node to our list in the right place, and mark
480 if (fdtdec_get_is_enabled(blob, node)) {
481 if (node_list[number]) {
482 debug("%s: warning: alias '%s' requires that "
483 "a node be placed in the list in a "
484 "position which is already filled by "
485 "node '%s'\n", __func__, path,
486 fdt_get_name(blob, node, NULL));
489 node_list[number] = node;
490 if (number >= num_found)
491 num_found = number + 1;
496 /* Add any nodes not mentioned by an alias */
497 for (i = j = 0; i < maxcount; i++) {
499 for (; j < maxcount; j++)
501 fdtdec_get_is_enabled(blob, nodes[j]))
504 /* Have we run out of nodes to add? */
508 assert(!node_list[i]);
509 node_list[i] = nodes[j++];
518 int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
521 int base_len = strlen(base);
522 const char *find_name;
527 find_name = fdt_get_name(blob, offset, &find_namelen);
528 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
530 aliases = fdt_path_offset(blob, "/aliases");
531 for (prop_offset = fdt_first_property_offset(blob, aliases);
533 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
539 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
540 debug(" - %s, %s\n", name, prop);
541 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
542 strncmp(name, base, base_len))
545 slash = strrchr(prop, '/');
546 if (strcmp(slash + 1, find_name))
548 val = trailing_strtol(name);
551 debug("Found seq %d\n", *seqp);
556 debug("Not found\n");
560 const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
566 chosen_node = fdt_path_offset(blob, "/chosen");
567 return fdt_getprop(blob, chosen_node, name, NULL);
570 int fdtdec_get_chosen_node(const void *blob, const char *name)
574 prop = fdtdec_get_chosen_prop(blob, name);
576 return -FDT_ERR_NOTFOUND;
577 return fdt_path_offset(blob, prop);
580 int fdtdec_check_fdt(void)
583 * We must have an FDT, but we cannot panic() yet since the console
584 * is not ready. So for now, just assert(). Boards which need an early
585 * FDT (prior to console ready) will need to make their own
586 * arrangements and do their own checks.
588 assert(!fdtdec_prepare_fdt());
593 * This function is a little odd in that it accesses global data. At some
594 * point if the architecture board.c files merge this will make more sense.
595 * Even now, it is common code.
597 int fdtdec_prepare_fdt(void)
599 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
600 fdt_check_header(gd->fdt_blob)) {
601 #ifdef CONFIG_SPL_BUILD
602 puts("Missing DTB\n");
604 puts("No valid device tree binary found - please append one to U-Boot binary, use u-boot-dtb.bin or define CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n");
607 printf("fdt_blob=%p\n", gd->fdt_blob);
608 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
618 int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
623 debug("%s: %s\n", __func__, prop_name);
624 phandle = fdt_getprop(blob, node, prop_name, NULL);
626 return -FDT_ERR_NOTFOUND;
628 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
633 * Look up a property in a node and check that it has a minimum length.
635 * @param blob FDT blob
636 * @param node node to examine
637 * @param prop_name name of property to find
638 * @param min_len minimum property length in bytes
639 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
640 found, or -FDT_ERR_BADLAYOUT if not enough data
641 * @return pointer to cell, which is only valid if err == 0
643 static const void *get_prop_check_min_len(const void *blob, int node,
644 const char *prop_name, int min_len, int *err)
649 debug("%s: %s\n", __func__, prop_name);
650 cell = fdt_getprop(blob, node, prop_name, &len);
652 *err = -FDT_ERR_NOTFOUND;
653 else if (len < min_len)
654 *err = -FDT_ERR_BADLAYOUT;
660 int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
661 u32 *array, int count)
666 debug("%s: %s\n", __func__, prop_name);
667 cell = get_prop_check_min_len(blob, node, prop_name,
668 sizeof(u32) * count, &err);
670 for (i = 0; i < count; i++)
671 array[i] = fdt32_to_cpu(cell[i]);
676 int fdtdec_get_int_array_count(const void *blob, int node,
677 const char *prop_name, u32 *array, int count)
683 debug("%s: %s\n", __func__, prop_name);
684 cell = fdt_getprop(blob, node, prop_name, &len);
686 return -FDT_ERR_NOTFOUND;
687 elems = len / sizeof(u32);
690 for (i = 0; i < count; i++)
691 array[i] = fdt32_to_cpu(cell[i]);
696 const u32 *fdtdec_locate_array(const void *blob, int node,
697 const char *prop_name, int count)
702 cell = get_prop_check_min_len(blob, node, prop_name,
703 sizeof(u32) * count, &err);
704 return err ? NULL : cell;
707 int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
712 debug("%s: %s\n", __func__, prop_name);
713 cell = fdt_getprop(blob, node, prop_name, &len);
717 int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
718 const char *list_name,
719 const char *cells_name,
720 int cell_count, int index,
721 struct fdtdec_phandle_args *out_args)
723 const __be32 *list, *list_end;
724 int rc = 0, size, cur_index = 0;
729 /* Retrieve the phandle list property */
730 list = fdt_getprop(blob, src_node, list_name, &size);
733 list_end = list + size / sizeof(*list);
735 /* Loop over the phandles until all the requested entry is found */
736 while (list < list_end) {
741 * If phandle is 0, then it is an empty entry with no
742 * arguments. Skip forward to the next entry.
744 phandle = be32_to_cpup(list++);
747 * Find the provider node and parse the #*-cells
748 * property to determine the argument length.
750 * This is not needed if the cell count is hard-coded
751 * (i.e. cells_name not set, but cell_count is set),
752 * except when we're going to return the found node
755 if (cells_name || cur_index == index) {
756 node = fdt_node_offset_by_phandle(blob,
759 debug("%s: could not find phandle\n",
760 fdt_get_name(blob, src_node,
767 count = fdtdec_get_int(blob, node, cells_name,
770 debug("%s: could not get %s for %s\n",
771 fdt_get_name(blob, src_node,
774 fdt_get_name(blob, node,
783 * Make sure that the arguments actually fit in the
784 * remaining property data length
786 if (list + count > list_end) {
787 debug("%s: arguments longer than property\n",
788 fdt_get_name(blob, src_node, NULL));
794 * All of the error cases above bail out of the loop, so at
795 * this point, the parsing is successful. If the requested
796 * index matches, then fill the out_args structure and return,
797 * or return -ENOENT for an empty entry.
800 if (cur_index == index) {
807 if (count > MAX_PHANDLE_ARGS) {
808 debug("%s: too many arguments %d\n",
809 fdt_get_name(blob, src_node,
811 count = MAX_PHANDLE_ARGS;
813 out_args->node = node;
814 out_args->args_count = count;
815 for (i = 0; i < count; i++) {
817 be32_to_cpup(list++);
821 /* Found it! return success */
831 * Result will be one of:
832 * -ENOENT : index is for empty phandle
833 * -EINVAL : parsing error on data
834 * [1..n] : Number of phandle (count mode; when index = -1)
836 rc = index < 0 ? cur_index : -ENOENT;
841 int fdtdec_get_child_count(const void *blob, int node)
846 fdt_for_each_subnode(subnode, blob, node)
852 int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
853 u8 *array, int count)
858 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
860 memcpy(array, cell, count);
864 const u8 *fdtdec_locate_byte_array(const void *blob, int node,
865 const char *prop_name, int count)
870 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
876 int fdtdec_get_config_int(const void *blob, const char *prop_name,
881 debug("%s: %s\n", __func__, prop_name);
882 config_node = fdt_path_offset(blob, "/config");
885 return fdtdec_get_int(blob, config_node, prop_name, default_val);
888 int fdtdec_get_config_bool(const void *blob, const char *prop_name)
893 debug("%s: %s\n", __func__, prop_name);
894 config_node = fdt_path_offset(blob, "/config");
897 prop = fdt_get_property(blob, config_node, prop_name, NULL);
902 char *fdtdec_get_config_string(const void *blob, const char *prop_name)
908 debug("%s: %s\n", __func__, prop_name);
909 nodeoffset = fdt_path_offset(blob, "/config");
913 nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
917 return (char *)nodep;
920 int fdtdec_decode_region(const void *blob, int node, const char *prop_name,
921 fdt_addr_t *basep, fdt_size_t *sizep)
923 const fdt_addr_t *cell;
926 debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL),
928 cell = fdt_getprop(blob, node, prop_name, &len);
929 if (!cell || (len < sizeof(fdt_addr_t) * 2)) {
930 debug("cell=%p, len=%d\n", cell, len);
934 *basep = fdt_addr_to_cpu(*cell);
935 *sizep = fdt_size_to_cpu(cell[1]);
936 debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep,
942 u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
947 number = (number << 32) | fdt32_to_cpu(*ptr++);
952 int fdt_get_resource(const void *fdt, int node, const char *property,
953 unsigned int index, struct fdt_resource *res)
955 const fdt32_t *ptr, *end;
956 int na, ns, len, parent;
959 parent = fdt_parent_offset(fdt, node);
963 na = fdt_address_cells(fdt, parent);
964 ns = fdt_size_cells(fdt, parent);
966 ptr = fdt_getprop(fdt, node, property, &len);
970 end = ptr + len / sizeof(*ptr);
972 while (ptr + na + ns <= end) {
974 res->start = res->end = fdtdec_get_number(ptr, na);
975 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
983 return -FDT_ERR_NOTFOUND;
986 int fdt_get_named_resource(const void *fdt, int node, const char *property,
987 const char *prop_names, const char *name,
988 struct fdt_resource *res)
992 index = fdt_stringlist_search(fdt, node, prop_names, name);
996 return fdt_get_resource(fdt, node, property, index, res);
999 int fdtdec_decode_memory_region(const void *blob, int config_node,
1000 const char *mem_type, const char *suffix,
1001 fdt_addr_t *basep, fdt_size_t *sizep)
1005 fdt_size_t size, offset_size;
1006 fdt_addr_t base, offset;
1009 if (config_node == -1) {
1010 config_node = fdt_path_offset(blob, "/config");
1011 if (config_node < 0) {
1012 debug("%s: Cannot find /config node\n", __func__);
1019 snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type,
1021 mem = fdt_getprop(blob, config_node, prop_name, NULL);
1023 debug("%s: No memory type for '%s', using /memory\n", __func__,
1028 node = fdt_path_offset(blob, mem);
1030 debug("%s: Failed to find node '%s': %s\n", __func__, mem,
1031 fdt_strerror(node));
1036 * Not strictly correct - the memory may have multiple banks. We just
1039 if (fdtdec_decode_region(blob, node, "reg", &base, &size)) {
1040 debug("%s: Failed to decode memory region %s\n", __func__,
1045 snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type,
1047 if (fdtdec_decode_region(blob, config_node, prop_name, &offset,
1049 debug("%s: Failed to decode memory region '%s'\n", __func__,
1054 *basep = base + offset;
1055 *sizep = offset_size;
1060 static int decode_timing_property(const void *blob, int node, const char *name,
1061 struct timing_entry *result)
1063 int length, ret = 0;
1066 prop = fdt_getprop(blob, node, name, &length);
1068 debug("%s: could not find property %s\n",
1069 fdt_get_name(blob, node, NULL), name);
1073 if (length == sizeof(u32)) {
1074 result->typ = fdtdec_get_int(blob, node, name, 0);
1075 result->min = result->typ;
1076 result->max = result->typ;
1078 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
1084 int fdtdec_decode_display_timing(const void *blob, int parent, int index,
1085 struct display_timing *dt)
1087 int i, node, timings_node;
1091 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
1092 if (timings_node < 0)
1093 return timings_node;
1095 for (i = 0, node = fdt_first_subnode(blob, timings_node);
1096 node > 0 && i != index;
1097 node = fdt_next_subnode(blob, node))
1103 memset(dt, 0, sizeof(*dt));
1105 ret |= decode_timing_property(blob, node, "hback-porch",
1107 ret |= decode_timing_property(blob, node, "hfront-porch",
1109 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
1110 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
1111 ret |= decode_timing_property(blob, node, "vback-porch",
1113 ret |= decode_timing_property(blob, node, "vfront-porch",
1115 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
1116 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
1117 ret |= decode_timing_property(blob, node, "clock-frequency",
1121 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1123 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1124 DISPLAY_FLAGS_VSYNC_LOW;
1126 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1128 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1129 DISPLAY_FLAGS_HSYNC_LOW;
1131 val = fdtdec_get_int(blob, node, "de-active", -1);
1133 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1134 DISPLAY_FLAGS_DE_LOW;
1136 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1138 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1139 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1142 if (fdtdec_get_bool(blob, node, "interlaced"))
1143 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1144 if (fdtdec_get_bool(blob, node, "doublescan"))
1145 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1146 if (fdtdec_get_bool(blob, node, "doubleclk"))
1147 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1152 int fdtdec_setup_memory_size(void)
1155 struct fdt_resource res;
1157 mem = fdt_path_offset(gd->fdt_blob, "/memory");
1159 debug("%s: Missing /memory node\n", __func__);
1163 ret = fdt_get_resource(gd->fdt_blob, mem, "reg", 0, &res);
1165 debug("%s: Unable to decode first memory bank\n", __func__);
1169 gd->ram_size = (phys_size_t)(res.end - res.start + 1);
1170 debug("%s: Initial DRAM size %llx\n", __func__,
1171 (unsigned long long)gd->ram_size);
1176 #if defined(CONFIG_NR_DRAM_BANKS)
1177 int fdtdec_setup_memory_banksize(void)
1180 struct fdt_resource res;
1182 mem = fdt_path_offset(gd->fdt_blob, "/memory");
1184 debug("%s: Missing /memory node\n", __func__);
1188 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
1189 ret = fdt_get_resource(gd->fdt_blob, mem, "reg", bank, &res);
1190 if (ret == -FDT_ERR_NOTFOUND)
1195 gd->bd->bi_dram[bank].start = (phys_addr_t)res.start;
1196 gd->bd->bi_dram[bank].size =
1197 (phys_size_t)(res.end - res.start + 1);
1199 debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
1201 (unsigned long long)gd->bd->bi_dram[bank].start,
1202 (unsigned long long)gd->bd->bi_dram[bank].size);
1209 #if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1210 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\
1211 CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO)
1212 static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1214 size_t sz_out = CONFIG_SPL_MULTI_DTB_FIT_UNCOMPRESS_SZ;
1215 ulong sz_in = sz_src;
1219 if (CONFIG_IS_ENABLED(GZIP))
1220 if (gzip_parse_header(src, sz_in) < 0)
1222 if (CONFIG_IS_ENABLED(LZO))
1223 if (!lzop_is_valid_header(src))
1226 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) {
1227 dst = malloc(sz_out);
1229 puts("uncompress_blob: Unable to allocate memory\n");
1233 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA)
1234 dst = (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR);
1240 if (CONFIG_IS_ENABLED(GZIP))
1241 rc = gunzip(dst, sz_out, (u8 *)src, &sz_in);
1242 else if (CONFIG_IS_ENABLED(LZO))
1243 rc = lzop_decompress(src, sz_in, dst, &sz_out);
1246 /* not a valid compressed blob */
1247 puts("uncompress_blob: Unable to uncompress\n");
1248 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC))
1256 static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1263 int fdtdec_setup(void)
1265 #if CONFIG_IS_ENABLED(OF_CONTROL)
1266 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1269 # ifdef CONFIG_OF_EMBED
1270 /* Get a pointer to the FDT */
1271 # ifdef CONFIG_SPL_BUILD
1272 gd->fdt_blob = __dtb_dt_spl_begin;
1274 gd->fdt_blob = __dtb_dt_begin;
1276 # elif defined CONFIG_OF_SEPARATE
1277 # ifdef CONFIG_SPL_BUILD
1278 /* FDT is at end of BSS unless it is in a different memory region */
1279 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
1280 gd->fdt_blob = (ulong *)&_image_binary_end;
1282 gd->fdt_blob = (ulong *)&__bss_end;
1284 /* FDT is at end of image */
1285 gd->fdt_blob = (ulong *)&_end;
1287 # elif defined(CONFIG_OF_BOARD)
1288 /* Allow the board to override the fdt address. */
1289 gd->fdt_blob = board_fdt_blob_setup();
1290 # elif defined(CONFIG_OF_HOSTFILE)
1291 if (sandbox_read_fdt_from_file()) {
1292 puts("Failed to read control FDT\n");
1296 # ifndef CONFIG_SPL_BUILD
1297 /* Allow the early environment to override the fdt address */
1298 gd->fdt_blob = (void *)env_get_ulong("fdtcontroladdr", 16,
1299 (uintptr_t)gd->fdt_blob);
1302 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1304 * Try and uncompress the blob.
1305 * Unfortunately there is no way to know how big the input blob really
1306 * is. So let us set the maximum input size arbitrarily high. 16MB
1307 * ought to be more than enough for packed DTBs.
1309 if (uncompress_blob(gd->fdt_blob, 0x1000000, &fdt_blob) == 0)
1310 gd->fdt_blob = fdt_blob;
1313 * Check if blob is a FIT images containings DTBs.
1314 * If so, pick the most relevant
1316 fdt_blob = locate_dtb_in_fit(gd->fdt_blob);
1318 gd->fdt_blob = fdt_blob;
1322 return fdtdec_prepare_fdt();
1325 #endif /* !USE_HOSTCC */