1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2011 The Chromium OS Authors.
13 #include <dm/of_extra.h>
17 #include <fdt_support.h>
20 #include <linux/libfdt.h>
22 #include <asm/sections.h>
23 #include <linux/ctype.h>
24 #include <linux/lzo.h>
26 DECLARE_GLOBAL_DATA_PTR
;
29 * Here are the type we know about. One day we might allow drivers to
30 * register. For now we just put them here. The COMPAT macro allows us to
31 * turn this into a sparse list later, and keeps the ID with the name.
33 * NOTE: This list is basically a TODO list for things that need to be
34 * converted to driver model. So don't add new things here unless there is a
35 * good reason why driver-model conversion is infeasible. Examples include
36 * things which are used before driver model is available.
38 #define COMPAT(id, name) name
39 static const char * const compat_names
[COMPAT_COUNT
] = {
40 COMPAT(UNKNOWN
, "<none>"),
41 COMPAT(NVIDIA_TEGRA20_EMC
, "nvidia,tegra20-emc"),
42 COMPAT(NVIDIA_TEGRA20_EMC_TABLE
, "nvidia,tegra20-emc-table"),
43 COMPAT(NVIDIA_TEGRA20_NAND
, "nvidia,tegra20-nand"),
44 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL
, "nvidia,tegra124-xusb-padctl"),
45 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL
, "nvidia,tegra210-xusb-padctl"),
46 COMPAT(SMSC_LAN9215
, "smsc,lan9215"),
47 COMPAT(SAMSUNG_EXYNOS5_SROMC
, "samsung,exynos-sromc"),
48 COMPAT(SAMSUNG_EXYNOS_USB_PHY
, "samsung,exynos-usb-phy"),
49 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY
, "samsung,exynos5250-usb3-phy"),
50 COMPAT(SAMSUNG_EXYNOS_TMU
, "samsung,exynos-tmu"),
51 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI
, "samsung,exynos-mipi-dsi"),
52 COMPAT(SAMSUNG_EXYNOS_DWMMC
, "samsung,exynos-dwmmc"),
53 COMPAT(GENERIC_SPI_FLASH
, "jedec,spi-nor"),
54 COMPAT(SAMSUNG_EXYNOS_SYSMMU
, "samsung,sysmmu-v3.3"),
55 COMPAT(INTEL_MICROCODE
, "intel,microcode"),
56 COMPAT(INTEL_QRK_MRC
, "intel,quark-mrc"),
57 COMPAT(ALTERA_SOCFPGA_DWMAC
, "altr,socfpga-stmmac"),
58 COMPAT(ALTERA_SOCFPGA_DWMMC
, "altr,socfpga-dw-mshc"),
59 COMPAT(ALTERA_SOCFPGA_DWC2USB
, "snps,dwc2"),
60 COMPAT(INTEL_BAYTRAIL_FSP
, "intel,baytrail-fsp"),
61 COMPAT(INTEL_BAYTRAIL_FSP_MDP
, "intel,baytrail-fsp-mdp"),
62 COMPAT(INTEL_IVYBRIDGE_FSP
, "intel,ivybridge-fsp"),
63 COMPAT(COMPAT_SUNXI_NAND
, "allwinner,sun4i-a10-nand"),
64 COMPAT(ALTERA_SOCFPGA_CLK
, "altr,clk-mgr"),
65 COMPAT(ALTERA_SOCFPGA_PINCTRL_SINGLE
, "pinctrl-single"),
66 COMPAT(ALTERA_SOCFPGA_H2F_BRG
, "altr,socfpga-hps2fpga-bridge"),
67 COMPAT(ALTERA_SOCFPGA_LWH2F_BRG
, "altr,socfpga-lwhps2fpga-bridge"),
68 COMPAT(ALTERA_SOCFPGA_F2H_BRG
, "altr,socfpga-fpga2hps-bridge"),
69 COMPAT(ALTERA_SOCFPGA_F2SDR0
, "altr,socfpga-fpga2sdram0-bridge"),
70 COMPAT(ALTERA_SOCFPGA_F2SDR1
, "altr,socfpga-fpga2sdram1-bridge"),
71 COMPAT(ALTERA_SOCFPGA_F2SDR2
, "altr,socfpga-fpga2sdram2-bridge"),
72 COMPAT(ALTERA_SOCFPGA_FPGA0
, "altr,socfpga-a10-fpga-mgr"),
73 COMPAT(ALTERA_SOCFPGA_NOC
, "altr,socfpga-a10-noc"),
74 COMPAT(ALTERA_SOCFPGA_CLK_INIT
, "altr,socfpga-a10-clk-init")
77 const char *fdtdec_get_compatible(enum fdt_compat_id id
)
79 /* We allow reading of the 'unknown' ID for testing purposes */
80 assert(id
>= 0 && id
< COMPAT_COUNT
);
81 return compat_names
[id
];
84 fdt_addr_t
fdtdec_get_addr_size_fixed(const void *blob
, int node
,
85 const char *prop_name
, int index
, int na
,
86 int ns
, fdt_size_t
*sizep
,
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 prop
= fdt_getprop(blob
, node
, prop_name
, &len
);
98 debug("(not found)\n");
99 return FDT_ADDR_T_NONE
;
101 prop_end
= prop
+ (len
/ sizeof(*prop
));
103 prop_addr
= prop
+ (index
* (na
+ ns
));
104 prop_size
= prop_addr
+ na
;
105 prop_after_size
= prop_size
+ ns
;
106 if (prop_after_size
> prop_end
) {
107 debug("(not enough data: expected >= %d cells, got %d cells)\n",
108 (u32
)(prop_after_size
- prop
), ((u32
)(prop_end
- prop
)));
109 return FDT_ADDR_T_NONE
;
112 #if CONFIG_IS_ENABLED(OF_TRANSLATE)
114 addr
= fdt_translate_address(blob
, node
, prop_addr
);
117 addr
= fdtdec_get_number(prop_addr
, na
);
120 *sizep
= fdtdec_get_number(prop_size
, ns
);
121 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr
,
122 (unsigned long long)*sizep
);
124 debug("addr=%08llx\n", (unsigned long long)addr
);
130 fdt_addr_t
fdtdec_get_addr_size_auto_parent(const void *blob
, int parent
,
131 int node
, const char *prop_name
,
132 int index
, fdt_size_t
*sizep
,
137 debug("%s: ", __func__
);
139 na
= fdt_address_cells(blob
, parent
);
141 debug("(bad #address-cells)\n");
142 return FDT_ADDR_T_NONE
;
145 ns
= fdt_size_cells(blob
, parent
);
147 debug("(bad #size-cells)\n");
148 return FDT_ADDR_T_NONE
;
151 debug("na=%d, ns=%d, ", na
, ns
);
153 return fdtdec_get_addr_size_fixed(blob
, node
, prop_name
, index
, na
,
154 ns
, sizep
, translate
);
157 fdt_addr_t
fdtdec_get_addr_size_auto_noparent(const void *blob
, int node
,
158 const char *prop_name
, int index
,
164 debug("%s: ", __func__
);
166 parent
= fdt_parent_offset(blob
, node
);
168 debug("(no parent found)\n");
169 return FDT_ADDR_T_NONE
;
172 return fdtdec_get_addr_size_auto_parent(blob
, parent
, node
, prop_name
,
173 index
, sizep
, translate
);
176 fdt_addr_t
fdtdec_get_addr_size(const void *blob
, int node
,
177 const char *prop_name
, fdt_size_t
*sizep
)
179 int ns
= sizep
? (sizeof(fdt_size_t
) / sizeof(fdt32_t
)) : 0;
181 return fdtdec_get_addr_size_fixed(blob
, node
, prop_name
, 0,
182 sizeof(fdt_addr_t
) / sizeof(fdt32_t
),
186 fdt_addr_t
fdtdec_get_addr(const void *blob
, int node
, const char *prop_name
)
188 return fdtdec_get_addr_size(blob
, node
, prop_name
, NULL
);
191 #if CONFIG_IS_ENABLED(PCI) && defined(CONFIG_DM_PCI)
192 int fdtdec_get_pci_vendev(const void *blob
, int node
, u16
*vendor
, u16
*device
)
194 const char *list
, *end
;
197 list
= fdt_getprop(blob
, node
, "compatible", &len
);
204 if (len
>= strlen("pciVVVV,DDDD")) {
205 char *s
= strstr(list
, "pci");
208 * check if the string is something like pciVVVV,DDDD.RR
209 * or just pciVVVV,DDDD
211 if (s
&& s
[7] == ',' &&
212 (s
[12] == '.' || s
[12] == 0)) {
214 *vendor
= simple_strtol(s
, NULL
, 16);
217 *device
= simple_strtol(s
, NULL
, 16);
228 int fdtdec_get_pci_bar32(const struct udevice
*dev
, struct fdt_pci_addr
*addr
,
233 /* extract the bar number from fdt_pci_addr */
234 barnum
= addr
->phys_hi
& 0xff;
235 if (barnum
< PCI_BASE_ADDRESS_0
|| barnum
> PCI_CARDBUS_CIS
)
238 barnum
= (barnum
- PCI_BASE_ADDRESS_0
) / 4;
239 *bar
= dm_pci_read_bar32(dev
, barnum
);
245 uint64_t fdtdec_get_uint64(const void *blob
, int node
, const char *prop_name
,
246 uint64_t default_val
)
248 const unaligned_fdt64_t
*cell64
;
251 cell64
= fdt_getprop(blob
, node
, prop_name
, &length
);
252 if (!cell64
|| length
< sizeof(*cell64
))
255 return fdt64_to_cpu(*cell64
);
258 int fdtdec_get_is_enabled(const void *blob
, int node
)
263 * It should say "okay", so only allow that. Some fdts use "ok" but
264 * this is a bug. Please fix your device tree source file. See here
267 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
269 cell
= fdt_getprop(blob
, node
, "status", NULL
);
271 return strcmp(cell
, "okay") == 0;
275 enum fdt_compat_id
fdtdec_lookup(const void *blob
, int node
)
277 enum fdt_compat_id id
;
279 /* Search our drivers */
280 for (id
= COMPAT_UNKNOWN
; id
< COMPAT_COUNT
; id
++)
281 if (fdt_node_check_compatible(blob
, node
,
282 compat_names
[id
]) == 0)
284 return COMPAT_UNKNOWN
;
287 int fdtdec_next_compatible(const void *blob
, int node
, enum fdt_compat_id id
)
289 return fdt_node_offset_by_compatible(blob
, node
, compat_names
[id
]);
292 int fdtdec_next_compatible_subnode(const void *blob
, int node
,
293 enum fdt_compat_id id
, int *depthp
)
296 node
= fdt_next_node(blob
, node
, depthp
);
297 } while (*depthp
> 1);
299 /* If this is a direct subnode, and compatible, return it */
300 if (*depthp
== 1 && 0 == fdt_node_check_compatible(
301 blob
, node
, compat_names
[id
]))
304 return -FDT_ERR_NOTFOUND
;
307 int fdtdec_next_alias(const void *blob
, const char *name
, enum fdt_compat_id id
,
310 #define MAX_STR_LEN 20
311 char str
[MAX_STR_LEN
+ 20];
314 /* snprintf() is not available */
315 assert(strlen(name
) < MAX_STR_LEN
);
316 sprintf(str
, "%.*s%d", MAX_STR_LEN
, name
, *upto
);
317 node
= fdt_path_offset(blob
, str
);
320 err
= fdt_node_check_compatible(blob
, node
, compat_names
[id
]);
324 return -FDT_ERR_NOTFOUND
;
329 int fdtdec_find_aliases_for_id(const void *blob
, const char *name
,
330 enum fdt_compat_id id
, int *node_list
,
333 memset(node_list
, '\0', sizeof(*node_list
) * maxcount
);
335 return fdtdec_add_aliases_for_id(blob
, name
, id
, node_list
, maxcount
);
338 /* TODO: Can we tighten this code up a little? */
339 int fdtdec_add_aliases_for_id(const void *blob
, const char *name
,
340 enum fdt_compat_id id
, int *node_list
,
343 int name_len
= strlen(name
);
351 /* find the alias node if present */
352 alias_node
= fdt_path_offset(blob
, "/aliases");
355 * start with nothing, and we can assume that the root node can't
358 memset(nodes
, '\0', sizeof(nodes
));
360 /* First find all the compatible nodes */
361 for (node
= count
= 0; node
>= 0 && count
< maxcount
;) {
362 node
= fdtdec_next_compatible(blob
, node
, id
);
364 nodes
[count
++] = node
;
367 debug("%s: warning: maxcount exceeded with alias '%s'\n",
370 /* Now find all the aliases */
371 for (offset
= fdt_first_property_offset(blob
, alias_node
);
373 offset
= fdt_next_property_offset(blob
, offset
)) {
374 const struct fdt_property
*prop
;
380 prop
= fdt_get_property_by_offset(blob
, offset
, NULL
);
381 path
= fdt_string(blob
, fdt32_to_cpu(prop
->nameoff
));
382 if (prop
->len
&& 0 == strncmp(path
, name
, name_len
))
383 node
= fdt_path_offset(blob
, prop
->data
);
387 /* Get the alias number */
388 number
= simple_strtoul(path
+ name_len
, NULL
, 10);
389 if (number
< 0 || number
>= maxcount
) {
390 debug("%s: warning: alias '%s' is out of range\n",
395 /* Make sure the node we found is actually in our list! */
397 for (j
= 0; j
< count
; j
++)
398 if (nodes
[j
] == node
) {
404 debug("%s: warning: alias '%s' points to a node "
405 "'%s' that is missing or is not compatible "
406 " with '%s'\n", __func__
, path
,
407 fdt_get_name(blob
, node
, NULL
),
413 * Add this node to our list in the right place, and mark
416 if (fdtdec_get_is_enabled(blob
, node
)) {
417 if (node_list
[number
]) {
418 debug("%s: warning: alias '%s' requires that "
419 "a node be placed in the list in a "
420 "position which is already filled by "
421 "node '%s'\n", __func__
, path
,
422 fdt_get_name(blob
, node
, NULL
));
425 node_list
[number
] = node
;
426 if (number
>= num_found
)
427 num_found
= number
+ 1;
432 /* Add any nodes not mentioned by an alias */
433 for (i
= j
= 0; i
< maxcount
; i
++) {
435 for (; j
< maxcount
; j
++)
437 fdtdec_get_is_enabled(blob
, nodes
[j
]))
440 /* Have we run out of nodes to add? */
444 assert(!node_list
[i
]);
445 node_list
[i
] = nodes
[j
++];
454 int fdtdec_get_alias_seq(const void *blob
, const char *base
, int offset
,
457 int base_len
= strlen(base
);
458 const char *find_name
;
463 find_name
= fdt_get_name(blob
, offset
, &find_namelen
);
464 debug("Looking for '%s' at %d, name %s\n", base
, offset
, find_name
);
466 aliases
= fdt_path_offset(blob
, "/aliases");
467 for (prop_offset
= fdt_first_property_offset(blob
, aliases
);
469 prop_offset
= fdt_next_property_offset(blob
, prop_offset
)) {
475 prop
= fdt_getprop_by_offset(blob
, prop_offset
, &name
, &len
);
476 debug(" - %s, %s\n", name
, prop
);
477 if (len
< find_namelen
|| *prop
!= '/' || prop
[len
- 1] ||
478 strncmp(name
, base
, base_len
))
481 slash
= strrchr(prop
, '/');
482 if (strcmp(slash
+ 1, find_name
))
484 val
= trailing_strtol(name
);
487 debug("Found seq %d\n", *seqp
);
492 debug("Not found\n");
496 int fdtdec_get_alias_highest_id(const void *blob
, const char *base
)
498 int base_len
= strlen(base
);
503 debug("Looking for highest alias id for '%s'\n", base
);
505 aliases
= fdt_path_offset(blob
, "/aliases");
506 for (prop_offset
= fdt_first_property_offset(blob
, aliases
);
508 prop_offset
= fdt_next_property_offset(blob
, prop_offset
)) {
513 prop
= fdt_getprop_by_offset(blob
, prop_offset
, &name
, &len
);
514 debug(" - %s, %s\n", name
, prop
);
515 if (*prop
!= '/' || prop
[len
- 1] ||
516 strncmp(name
, base
, base_len
))
519 val
= trailing_strtol(name
);
521 debug("Found seq %d\n", val
);
529 const char *fdtdec_get_chosen_prop(const void *blob
, const char *name
)
535 chosen_node
= fdt_path_offset(blob
, "/chosen");
536 return fdt_getprop(blob
, chosen_node
, name
, NULL
);
539 int fdtdec_get_chosen_node(const void *blob
, const char *name
)
543 prop
= fdtdec_get_chosen_prop(blob
, name
);
545 return -FDT_ERR_NOTFOUND
;
546 return fdt_path_offset(blob
, prop
);
549 int fdtdec_check_fdt(void)
552 * We must have an FDT, but we cannot panic() yet since the console
553 * is not ready. So for now, just assert(). Boards which need an early
554 * FDT (prior to console ready) will need to make their own
555 * arrangements and do their own checks.
557 assert(!fdtdec_prepare_fdt());
562 * This function is a little odd in that it accesses global data. At some
563 * point if the architecture board.c files merge this will make more sense.
564 * Even now, it is common code.
566 int fdtdec_prepare_fdt(void)
568 if (!gd
->fdt_blob
|| ((uintptr_t)gd
->fdt_blob
& 3) ||
569 fdt_check_header(gd
->fdt_blob
)) {
570 #ifdef CONFIG_SPL_BUILD
571 puts("Missing DTB\n");
573 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");
576 printf("fdt_blob=%p\n", gd
->fdt_blob
);
577 print_buffer((ulong
)gd
->fdt_blob
, gd
->fdt_blob
, 4,
587 int fdtdec_lookup_phandle(const void *blob
, int node
, const char *prop_name
)
592 debug("%s: %s\n", __func__
, prop_name
);
593 phandle
= fdt_getprop(blob
, node
, prop_name
, NULL
);
595 return -FDT_ERR_NOTFOUND
;
597 lookup
= fdt_node_offset_by_phandle(blob
, fdt32_to_cpu(*phandle
));
602 * Look up a property in a node and check that it has a minimum length.
604 * @param blob FDT blob
605 * @param node node to examine
606 * @param prop_name name of property to find
607 * @param min_len minimum property length in bytes
608 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
609 found, or -FDT_ERR_BADLAYOUT if not enough data
610 * @return pointer to cell, which is only valid if err == 0
612 static const void *get_prop_check_min_len(const void *blob
, int node
,
613 const char *prop_name
, int min_len
,
619 debug("%s: %s\n", __func__
, prop_name
);
620 cell
= fdt_getprop(blob
, node
, prop_name
, &len
);
622 *err
= -FDT_ERR_NOTFOUND
;
623 else if (len
< min_len
)
624 *err
= -FDT_ERR_BADLAYOUT
;
630 int fdtdec_get_int_array(const void *blob
, int node
, const char *prop_name
,
631 u32
*array
, int count
)
636 debug("%s: %s\n", __func__
, prop_name
);
637 cell
= get_prop_check_min_len(blob
, node
, prop_name
,
638 sizeof(u32
) * count
, &err
);
642 for (i
= 0; i
< count
; i
++)
643 array
[i
] = fdt32_to_cpu(cell
[i
]);
648 int fdtdec_get_int_array_count(const void *blob
, int node
,
649 const char *prop_name
, u32
*array
, int count
)
655 debug("%s: %s\n", __func__
, prop_name
);
656 cell
= fdt_getprop(blob
, node
, prop_name
, &len
);
658 return -FDT_ERR_NOTFOUND
;
659 elems
= len
/ sizeof(u32
);
662 for (i
= 0; i
< count
; i
++)
663 array
[i
] = fdt32_to_cpu(cell
[i
]);
668 const u32
*fdtdec_locate_array(const void *blob
, int node
,
669 const char *prop_name
, int count
)
674 cell
= get_prop_check_min_len(blob
, node
, prop_name
,
675 sizeof(u32
) * count
, &err
);
676 return err
? NULL
: cell
;
679 int fdtdec_get_bool(const void *blob
, int node
, const char *prop_name
)
684 debug("%s: %s\n", __func__
, prop_name
);
685 cell
= fdt_getprop(blob
, node
, prop_name
, &len
);
689 int fdtdec_parse_phandle_with_args(const void *blob
, int src_node
,
690 const char *list_name
,
691 const char *cells_name
,
692 int cell_count
, int index
,
693 struct fdtdec_phandle_args
*out_args
)
695 const __be32
*list
, *list_end
;
696 int rc
= 0, size
, cur_index
= 0;
701 /* Retrieve the phandle list property */
702 list
= fdt_getprop(blob
, src_node
, list_name
, &size
);
705 list_end
= list
+ size
/ sizeof(*list
);
707 /* Loop over the phandles until all the requested entry is found */
708 while (list
< list_end
) {
713 * If phandle is 0, then it is an empty entry with no
714 * arguments. Skip forward to the next entry.
716 phandle
= be32_to_cpup(list
++);
719 * Find the provider node and parse the #*-cells
720 * property to determine the argument length.
722 * This is not needed if the cell count is hard-coded
723 * (i.e. cells_name not set, but cell_count is set),
724 * except when we're going to return the found node
727 if (cells_name
|| cur_index
== index
) {
728 node
= fdt_node_offset_by_phandle(blob
,
731 debug("%s: could not find phandle\n",
732 fdt_get_name(blob
, src_node
,
739 count
= fdtdec_get_int(blob
, node
, cells_name
,
742 debug("%s: could not get %s for %s\n",
743 fdt_get_name(blob
, src_node
,
746 fdt_get_name(blob
, node
,
755 * Make sure that the arguments actually fit in the
756 * remaining property data length
758 if (list
+ count
> list_end
) {
759 debug("%s: arguments longer than property\n",
760 fdt_get_name(blob
, src_node
, NULL
));
766 * All of the error cases above bail out of the loop, so at
767 * this point, the parsing is successful. If the requested
768 * index matches, then fill the out_args structure and return,
769 * or return -ENOENT for an empty entry.
772 if (cur_index
== index
) {
779 if (count
> MAX_PHANDLE_ARGS
) {
780 debug("%s: too many arguments %d\n",
781 fdt_get_name(blob
, src_node
,
783 count
= MAX_PHANDLE_ARGS
;
785 out_args
->node
= node
;
786 out_args
->args_count
= count
;
787 for (i
= 0; i
< count
; i
++) {
789 be32_to_cpup(list
++);
793 /* Found it! return success */
803 * Result will be one of:
804 * -ENOENT : index is for empty phandle
805 * -EINVAL : parsing error on data
806 * [1..n] : Number of phandle (count mode; when index = -1)
808 rc
= index
< 0 ? cur_index
: -ENOENT
;
813 int fdtdec_get_child_count(const void *blob
, int node
)
818 fdt_for_each_subnode(subnode
, blob
, node
)
824 int fdtdec_get_byte_array(const void *blob
, int node
, const char *prop_name
,
825 u8
*array
, int count
)
830 cell
= get_prop_check_min_len(blob
, node
, prop_name
, count
, &err
);
832 memcpy(array
, cell
, count
);
836 const u8
*fdtdec_locate_byte_array(const void *blob
, int node
,
837 const char *prop_name
, int count
)
842 cell
= get_prop_check_min_len(blob
, node
, prop_name
, count
, &err
);
848 int fdtdec_get_config_int(const void *blob
, const char *prop_name
,
853 debug("%s: %s\n", __func__
, prop_name
);
854 config_node
= fdt_path_offset(blob
, "/config");
857 return fdtdec_get_int(blob
, config_node
, prop_name
, default_val
);
860 int fdtdec_get_config_bool(const void *blob
, const char *prop_name
)
865 debug("%s: %s\n", __func__
, prop_name
);
866 config_node
= fdt_path_offset(blob
, "/config");
869 prop
= fdt_get_property(blob
, config_node
, prop_name
, NULL
);
874 char *fdtdec_get_config_string(const void *blob
, const char *prop_name
)
880 debug("%s: %s\n", __func__
, prop_name
);
881 nodeoffset
= fdt_path_offset(blob
, "/config");
885 nodep
= fdt_getprop(blob
, nodeoffset
, prop_name
, &len
);
889 return (char *)nodep
;
892 u64
fdtdec_get_number(const fdt32_t
*ptr
, unsigned int cells
)
897 number
= (number
<< 32) | fdt32_to_cpu(*ptr
++);
902 int fdt_get_resource(const void *fdt
, int node
, const char *property
,
903 unsigned int index
, struct fdt_resource
*res
)
905 const fdt32_t
*ptr
, *end
;
906 int na
, ns
, len
, parent
;
909 parent
= fdt_parent_offset(fdt
, node
);
913 na
= fdt_address_cells(fdt
, parent
);
914 ns
= fdt_size_cells(fdt
, parent
);
916 ptr
= fdt_getprop(fdt
, node
, property
, &len
);
920 end
= ptr
+ len
/ sizeof(*ptr
);
922 while (ptr
+ na
+ ns
<= end
) {
924 res
->start
= fdtdec_get_number(ptr
, na
);
925 res
->end
= res
->start
;
926 res
->end
+= fdtdec_get_number(&ptr
[na
], ns
) - 1;
934 return -FDT_ERR_NOTFOUND
;
937 int fdt_get_named_resource(const void *fdt
, int node
, const char *property
,
938 const char *prop_names
, const char *name
,
939 struct fdt_resource
*res
)
943 index
= fdt_stringlist_search(fdt
, node
, prop_names
, name
);
947 return fdt_get_resource(fdt
, node
, property
, index
, res
);
950 static int decode_timing_property(const void *blob
, int node
, const char *name
,
951 struct timing_entry
*result
)
956 prop
= fdt_getprop(blob
, node
, name
, &length
);
958 debug("%s: could not find property %s\n",
959 fdt_get_name(blob
, node
, NULL
), name
);
963 if (length
== sizeof(u32
)) {
964 result
->typ
= fdtdec_get_int(blob
, node
, name
, 0);
965 result
->min
= result
->typ
;
966 result
->max
= result
->typ
;
968 ret
= fdtdec_get_int_array(blob
, node
, name
, &result
->min
, 3);
974 int fdtdec_decode_display_timing(const void *blob
, int parent
, int index
,
975 struct display_timing
*dt
)
977 int i
, node
, timings_node
;
981 timings_node
= fdt_subnode_offset(blob
, parent
, "display-timings");
982 if (timings_node
< 0)
985 for (i
= 0, node
= fdt_first_subnode(blob
, timings_node
);
986 node
> 0 && i
!= index
;
987 node
= fdt_next_subnode(blob
, node
))
993 memset(dt
, 0, sizeof(*dt
));
995 ret
|= decode_timing_property(blob
, node
, "hback-porch",
997 ret
|= decode_timing_property(blob
, node
, "hfront-porch",
999 ret
|= decode_timing_property(blob
, node
, "hactive", &dt
->hactive
);
1000 ret
|= decode_timing_property(blob
, node
, "hsync-len", &dt
->hsync_len
);
1001 ret
|= decode_timing_property(blob
, node
, "vback-porch",
1003 ret
|= decode_timing_property(blob
, node
, "vfront-porch",
1005 ret
|= decode_timing_property(blob
, node
, "vactive", &dt
->vactive
);
1006 ret
|= decode_timing_property(blob
, node
, "vsync-len", &dt
->vsync_len
);
1007 ret
|= decode_timing_property(blob
, node
, "clock-frequency",
1011 val
= fdtdec_get_int(blob
, node
, "vsync-active", -1);
1013 dt
->flags
|= val
? DISPLAY_FLAGS_VSYNC_HIGH
:
1014 DISPLAY_FLAGS_VSYNC_LOW
;
1016 val
= fdtdec_get_int(blob
, node
, "hsync-active", -1);
1018 dt
->flags
|= val
? DISPLAY_FLAGS_HSYNC_HIGH
:
1019 DISPLAY_FLAGS_HSYNC_LOW
;
1021 val
= fdtdec_get_int(blob
, node
, "de-active", -1);
1023 dt
->flags
|= val
? DISPLAY_FLAGS_DE_HIGH
:
1024 DISPLAY_FLAGS_DE_LOW
;
1026 val
= fdtdec_get_int(blob
, node
, "pixelclk-active", -1);
1028 dt
->flags
|= val
? DISPLAY_FLAGS_PIXDATA_POSEDGE
:
1029 DISPLAY_FLAGS_PIXDATA_NEGEDGE
;
1032 if (fdtdec_get_bool(blob
, node
, "interlaced"))
1033 dt
->flags
|= DISPLAY_FLAGS_INTERLACED
;
1034 if (fdtdec_get_bool(blob
, node
, "doublescan"))
1035 dt
->flags
|= DISPLAY_FLAGS_DOUBLESCAN
;
1036 if (fdtdec_get_bool(blob
, node
, "doubleclk"))
1037 dt
->flags
|= DISPLAY_FLAGS_DOUBLECLK
;
1042 int fdtdec_setup_mem_size_base_fdt(const void *blob
)
1045 struct fdt_resource res
;
1047 mem
= fdt_path_offset(blob
, "/memory");
1049 debug("%s: Missing /memory node\n", __func__
);
1053 ret
= fdt_get_resource(blob
, mem
, "reg", 0, &res
);
1055 debug("%s: Unable to decode first memory bank\n", __func__
);
1059 gd
->ram_size
= (phys_size_t
)(res
.end
- res
.start
+ 1);
1060 gd
->ram_base
= (unsigned long)res
.start
;
1061 debug("%s: Initial DRAM size %llx\n", __func__
,
1062 (unsigned long long)gd
->ram_size
);
1067 int fdtdec_setup_mem_size_base(void)
1069 return fdtdec_setup_mem_size_base_fdt(gd
->fdt_blob
);
1072 #if defined(CONFIG_NR_DRAM_BANKS)
1074 static int get_next_memory_node(const void *blob
, int mem
)
1077 mem
= fdt_node_offset_by_prop_value(blob
, mem
,
1078 "device_type", "memory", 7);
1079 } while (!fdtdec_get_is_enabled(blob
, mem
));
1084 int fdtdec_setup_memory_banksize_fdt(const void *blob
)
1086 int bank
, ret
, mem
, reg
= 0;
1087 struct fdt_resource res
;
1089 mem
= get_next_memory_node(blob
, -1);
1091 debug("%s: Missing /memory node\n", __func__
);
1095 for (bank
= 0; bank
< CONFIG_NR_DRAM_BANKS
; bank
++) {
1096 ret
= fdt_get_resource(blob
, mem
, "reg", reg
++, &res
);
1097 if (ret
== -FDT_ERR_NOTFOUND
) {
1099 mem
= get_next_memory_node(blob
, mem
);
1100 if (mem
== -FDT_ERR_NOTFOUND
)
1103 ret
= fdt_get_resource(blob
, mem
, "reg", reg
++, &res
);
1104 if (ret
== -FDT_ERR_NOTFOUND
)
1111 gd
->bd
->bi_dram
[bank
].start
= (phys_addr_t
)res
.start
;
1112 gd
->bd
->bi_dram
[bank
].size
=
1113 (phys_size_t
)(res
.end
- res
.start
+ 1);
1115 debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
1117 (unsigned long long)gd
->bd
->bi_dram
[bank
].start
,
1118 (unsigned long long)gd
->bd
->bi_dram
[bank
].size
);
1124 int fdtdec_setup_memory_banksize(void)
1126 return fdtdec_setup_memory_banksize_fdt(gd
->fdt_blob
);
1131 #if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1132 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\
1133 CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO)
1134 static int uncompress_blob(const void *src
, ulong sz_src
, void **dstp
)
1136 size_t sz_out
= CONFIG_VAL(MULTI_DTB_FIT_UNCOMPRESS_SZ
);
1137 bool gzip
= 0, lzo
= 0;
1138 ulong sz_in
= sz_src
;
1142 if (CONFIG_IS_ENABLED(GZIP
))
1143 if (gzip_parse_header(src
, sz_in
) >= 0)
1145 if (CONFIG_IS_ENABLED(LZO
))
1146 if (!gzip
&& lzop_is_valid_header(src
))
1153 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC
)) {
1154 dst
= malloc(sz_out
);
1156 puts("uncompress_blob: Unable to allocate memory\n");
1160 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA)
1161 dst
= (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR
);
1167 if (CONFIG_IS_ENABLED(GZIP
) && gzip
)
1168 rc
= gunzip(dst
, sz_out
, (u8
*)src
, &sz_in
);
1169 else if (CONFIG_IS_ENABLED(LZO
) && lzo
)
1170 rc
= lzop_decompress(src
, sz_in
, dst
, &sz_out
);
1175 /* not a valid compressed blob */
1176 puts("uncompress_blob: Unable to uncompress\n");
1177 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC
))
1185 static int uncompress_blob(const void *src
, ulong sz_src
, void **dstp
)
1187 *dstp
= (void *)src
;
1193 #if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
1195 * For CONFIG_OF_SEPARATE, the board may optionally implement this to
1196 * provide and/or fixup the fdt.
1198 __weak
void *board_fdt_blob_setup(void)
1200 void *fdt_blob
= NULL
;
1201 #ifdef CONFIG_SPL_BUILD
1202 /* FDT is at end of BSS unless it is in a different memory region */
1203 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS
))
1204 fdt_blob
= (ulong
*)&_image_binary_end
;
1206 fdt_blob
= (ulong
*)&__bss_end
;
1208 /* FDT is at end of image */
1209 fdt_blob
= (ulong
*)&_end
;
1215 int fdtdec_set_ethernet_mac_address(void *fdt
, const u8
*mac
, size_t size
)
1220 if (!is_valid_ethaddr(mac
))
1223 path
= fdt_get_alias(fdt
, "ethernet");
1227 debug("ethernet alias found: %s\n", path
);
1229 offset
= fdt_path_offset(fdt
, path
);
1231 debug("ethernet alias points to absent node %s\n", path
);
1235 err
= fdt_setprop_inplace(fdt
, offset
, "local-mac-address", mac
, size
);
1239 debug("MAC address: %pM\n", mac
);
1244 static int fdtdec_init_reserved_memory(void *blob
)
1246 int na
, ns
, node
, err
;
1249 /* inherit #address-cells and #size-cells from the root node */
1250 na
= fdt_address_cells(blob
, 0);
1251 ns
= fdt_size_cells(blob
, 0);
1253 node
= fdt_add_subnode(blob
, 0, "reserved-memory");
1257 err
= fdt_setprop(blob
, node
, "ranges", NULL
, 0);
1261 value
= cpu_to_fdt32(ns
);
1263 err
= fdt_setprop(blob
, node
, "#size-cells", &value
, sizeof(value
));
1267 value
= cpu_to_fdt32(na
);
1269 err
= fdt_setprop(blob
, node
, "#address-cells", &value
, sizeof(value
));
1276 int fdtdec_add_reserved_memory(void *blob
, const char *basename
,
1277 const struct fdt_memory
*carveout
,
1280 fdt32_t cells
[4] = {}, *ptr
= cells
;
1281 uint32_t upper
, lower
, phandle
;
1282 int parent
, node
, na
, ns
, err
;
1286 /* create an empty /reserved-memory node if one doesn't exist */
1287 parent
= fdt_path_offset(blob
, "/reserved-memory");
1289 parent
= fdtdec_init_reserved_memory(blob
);
1294 /* only 1 or 2 #address-cells and #size-cells are supported */
1295 na
= fdt_address_cells(blob
, parent
);
1296 if (na
< 1 || na
> 2)
1297 return -FDT_ERR_BADNCELLS
;
1299 ns
= fdt_size_cells(blob
, parent
);
1300 if (ns
< 1 || ns
> 2)
1301 return -FDT_ERR_BADNCELLS
;
1303 /* find a matching node and return the phandle to that */
1304 fdt_for_each_subnode(node
, blob
, parent
) {
1305 const char *name
= fdt_get_name(blob
, node
, NULL
);
1306 phys_addr_t addr
, size
;
1308 addr
= fdtdec_get_addr_size(blob
, node
, "reg", &size
);
1309 if (addr
== FDT_ADDR_T_NONE
) {
1310 debug("failed to read address/size for %s\n", name
);
1314 if (addr
== carveout
->start
&& (addr
+ size
) == carveout
->end
) {
1316 *phandlep
= fdt_get_phandle(blob
, node
);
1322 * Unpack the start address and generate the name of the new node
1323 * base on the basename and the unit-address.
1325 upper
= upper_32_bits(carveout
->start
);
1326 lower
= lower_32_bits(carveout
->start
);
1328 if (na
> 1 && upper
> 0)
1329 snprintf(name
, sizeof(name
), "%s@%x,%x", basename
, upper
,
1333 debug("address %08x:%08x exceeds addressable space\n",
1335 return -FDT_ERR_BADVALUE
;
1338 snprintf(name
, sizeof(name
), "%s@%x", basename
, lower
);
1341 node
= fdt_add_subnode(blob
, parent
, name
);
1346 err
= fdt_generate_phandle(blob
, &phandle
);
1350 err
= fdtdec_set_phandle(blob
, node
, phandle
);
1355 /* store one or two address cells */
1357 *ptr
++ = cpu_to_fdt32(upper
);
1359 *ptr
++ = cpu_to_fdt32(lower
);
1361 /* store one or two size cells */
1362 size
= carveout
->end
- carveout
->start
+ 1;
1363 upper
= upper_32_bits(size
);
1364 lower
= lower_32_bits(size
);
1367 *ptr
++ = cpu_to_fdt32(upper
);
1369 *ptr
++ = cpu_to_fdt32(lower
);
1371 err
= fdt_setprop(blob
, node
, "reg", cells
, (na
+ ns
) * sizeof(*cells
));
1375 /* return the phandle for the new node for the caller to use */
1377 *phandlep
= phandle
;
1382 int fdtdec_get_carveout(const void *blob
, const char *node
, const char *name
,
1383 unsigned int index
, struct fdt_memory
*carveout
)
1385 const fdt32_t
*prop
;
1390 offset
= fdt_path_offset(blob
, node
);
1394 prop
= fdt_getprop(blob
, offset
, name
, &len
);
1396 debug("failed to get %s for %s\n", name
, node
);
1397 return -FDT_ERR_NOTFOUND
;
1400 if ((len
% sizeof(phandle
)) != 0) {
1401 debug("invalid phandle property\n");
1402 return -FDT_ERR_BADPHANDLE
;
1405 if (len
< (sizeof(phandle
) * (index
+ 1))) {
1406 debug("invalid phandle index\n");
1407 return -FDT_ERR_BADPHANDLE
;
1410 phandle
= fdt32_to_cpu(prop
[index
]);
1412 offset
= fdt_node_offset_by_phandle(blob
, phandle
);
1414 debug("failed to find node for phandle %u\n", phandle
);
1418 carveout
->start
= fdtdec_get_addr_size_auto_noparent(blob
, offset
,
1421 if (carveout
->start
== FDT_ADDR_T_NONE
) {
1422 debug("failed to read address/size from \"reg\" property\n");
1423 return -FDT_ERR_NOTFOUND
;
1426 carveout
->end
= carveout
->start
+ size
- 1;
1431 int fdtdec_set_carveout(void *blob
, const char *node
, const char *prop_name
,
1432 unsigned int index
, const char *name
,
1433 const struct fdt_memory
*carveout
)
1439 /* XXX implement support for multiple phandles */
1441 debug("invalid index %u\n", index
);
1442 return -FDT_ERR_BADOFFSET
;
1445 err
= fdtdec_add_reserved_memory(blob
, name
, carveout
, &phandle
);
1447 debug("failed to add reserved memory: %d\n", err
);
1451 offset
= fdt_path_offset(blob
, node
);
1453 debug("failed to find offset for node %s: %d\n", node
, offset
);
1457 value
= cpu_to_fdt32(phandle
);
1459 err
= fdt_setprop(blob
, offset
, prop_name
, &value
, sizeof(value
));
1461 debug("failed to set %s property for node %s: %d\n", prop_name
,
1469 int fdtdec_setup(void)
1471 #if CONFIG_IS_ENABLED(OF_CONTROL)
1472 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1475 # ifdef CONFIG_OF_EMBED
1476 /* Get a pointer to the FDT */
1477 # ifdef CONFIG_SPL_BUILD
1478 gd
->fdt_blob
= __dtb_dt_spl_begin
;
1480 gd
->fdt_blob
= __dtb_dt_begin
;
1482 # elif defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
1483 /* Allow the board to override the fdt address. */
1484 gd
->fdt_blob
= board_fdt_blob_setup();
1485 # elif defined(CONFIG_OF_HOSTFILE)
1486 if (sandbox_read_fdt_from_file()) {
1487 puts("Failed to read control FDT\n");
1490 # elif defined(CONFIG_OF_PRIOR_STAGE)
1491 gd
->fdt_blob
= (void *)prior_stage_fdt_address
;
1493 # ifndef CONFIG_SPL_BUILD
1494 /* Allow the early environment to override the fdt address */
1495 gd
->fdt_blob
= map_sysmem
1496 (env_get_ulong("fdtcontroladdr", 16,
1497 (unsigned long)map_to_sysmem(gd
->fdt_blob
)), 0);
1500 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1502 * Try and uncompress the blob.
1503 * Unfortunately there is no way to know how big the input blob really
1504 * is. So let us set the maximum input size arbitrarily high. 16MB
1505 * ought to be more than enough for packed DTBs.
1507 if (uncompress_blob(gd
->fdt_blob
, 0x1000000, &fdt_blob
) == 0)
1508 gd
->fdt_blob
= fdt_blob
;
1511 * Check if blob is a FIT images containings DTBs.
1512 * If so, pick the most relevant
1514 fdt_blob
= locate_dtb_in_fit(gd
->fdt_blob
);
1516 gd
->multi_dtb_fit
= gd
->fdt_blob
;
1517 gd
->fdt_blob
= fdt_blob
;
1523 return fdtdec_prepare_fdt();
1526 #if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1527 int fdtdec_resetup(int *rescan
)
1532 * If the current DTB is part of a compressed FIT image,
1533 * try to locate the best match from the uncompressed
1534 * FIT image stillpresent there. Save the time and space
1535 * required to uncompress it again.
1537 if (gd
->multi_dtb_fit
) {
1538 fdt_blob
= locate_dtb_in_fit(gd
->multi_dtb_fit
);
1540 if (fdt_blob
== gd
->fdt_blob
) {
1542 * The best match did not change. no need to tear down
1543 * the DM and rescan the fdt.
1550 gd
->fdt_blob
= fdt_blob
;
1551 return fdtdec_prepare_fdt();
1555 * If multi_dtb_fit is NULL, it means that blob appended to u-boot is
1556 * not a FIT image containings DTB, but a single DTB. There is no need
1557 * to teard down DM and rescan the DT in this case.
1564 #ifdef CONFIG_NR_DRAM_BANKS
1565 int fdtdec_decode_ram_size(const void *blob
, const char *area
, int board_id
,
1566 phys_addr_t
*basep
, phys_size_t
*sizep
, bd_t
*bd
)
1568 int addr_cells
, size_cells
;
1569 const u32
*cell
, *end
;
1570 u64 total_size
, size
, addr
;
1576 debug("%s: board_id=%d\n", __func__
, board_id
);
1579 node
= fdt_path_offset(blob
, area
);
1581 debug("No %s node found\n", area
);
1585 cell
= fdt_getprop(blob
, node
, "reg", &len
);
1587 debug("No reg property found\n");
1591 addr_cells
= fdt_address_cells(blob
, node
);
1592 size_cells
= fdt_size_cells(blob
, node
);
1594 /* Check the board id and mask */
1595 for (child
= fdt_first_subnode(blob
, node
);
1597 child
= fdt_next_subnode(blob
, child
)) {
1598 int match_mask
, match_value
;
1600 match_mask
= fdtdec_get_int(blob
, child
, "match-mask", -1);
1601 match_value
= fdtdec_get_int(blob
, child
, "match-value", -1);
1603 if (match_value
>= 0 &&
1604 ((board_id
& match_mask
) == match_value
)) {
1605 /* Found matching mask */
1606 debug("Found matching mask %d\n", match_mask
);
1608 cell
= fdt_getprop(blob
, node
, "reg", &len
);
1610 debug("No memory-banks property found\n");
1616 /* Note: if no matching subnode was found we use the parent node */
1619 memset(bd
->bi_dram
, '\0', sizeof(bd
->bi_dram
[0]) *
1620 CONFIG_NR_DRAM_BANKS
);
1623 auto_size
= fdtdec_get_bool(blob
, node
, "auto-size");
1626 end
= cell
+ len
/ 4 - addr_cells
- size_cells
;
1627 debug("cell at %p, end %p\n", cell
, end
);
1628 for (bank
= 0; bank
< CONFIG_NR_DRAM_BANKS
; bank
++) {
1632 if (addr_cells
== 2)
1633 addr
+= (u64
)fdt32_to_cpu(*cell
++) << 32UL;
1634 addr
+= fdt32_to_cpu(*cell
++);
1636 bd
->bi_dram
[bank
].start
= addr
;
1638 *basep
= (phys_addr_t
)addr
;
1641 if (size_cells
== 2)
1642 size
+= (u64
)fdt32_to_cpu(*cell
++) << 32UL;
1643 size
+= fdt32_to_cpu(*cell
++);
1648 debug("Auto-sizing %llx, size %llx: ", addr
, size
);
1649 new_size
= get_ram_size((long *)(uintptr_t)addr
, size
);
1650 if (new_size
== size
) {
1653 debug("sized to %llx\n", new_size
);
1659 bd
->bi_dram
[bank
].size
= size
;
1663 debug("Memory size %llu\n", total_size
);
1665 *sizep
= (phys_size_t
)total_size
;
1669 #endif /* CONFIG_NR_DRAM_BANKS */
1671 #endif /* !USE_HOSTCC */