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
,
87 int ns
, fdt_size_t
*sizep
,
90 const fdt32_t
*prop
, *prop_end
;
91 const fdt32_t
*prop_addr
, *prop_size
, *prop_after_size
;
95 debug("%s: %s: ", __func__
, prop_name
);
97 if (na
> (sizeof(fdt_addr_t
) / sizeof(fdt32_t
))) {
98 debug("(na too large for fdt_addr_t type)\n");
99 return FDT_ADDR_T_NONE
;
102 if (ns
> (sizeof(fdt_size_t
) / sizeof(fdt32_t
))) {
103 debug("(ns too large for fdt_size_t type)\n");
104 return FDT_ADDR_T_NONE
;
107 prop
= fdt_getprop(blob
, node
, prop_name
, &len
);
109 debug("(not found)\n");
110 return FDT_ADDR_T_NONE
;
112 prop_end
= prop
+ (len
/ sizeof(*prop
));
114 prop_addr
= prop
+ (index
* (na
+ ns
));
115 prop_size
= prop_addr
+ na
;
116 prop_after_size
= prop_size
+ ns
;
117 if (prop_after_size
> prop_end
) {
118 debug("(not enough data: expected >= %d cells, got %d cells)\n",
119 (u32
)(prop_after_size
- prop
), ((u32
)(prop_end
- prop
)));
120 return FDT_ADDR_T_NONE
;
123 #if CONFIG_IS_ENABLED(OF_TRANSLATE)
125 addr
= fdt_translate_address(blob
, node
, prop_addr
);
128 addr
= fdtdec_get_number(prop_addr
, na
);
131 *sizep
= fdtdec_get_number(prop_size
, ns
);
132 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr
,
133 (unsigned long long)*sizep
);
135 debug("addr=%08llx\n", (unsigned long long)addr
);
141 fdt_addr_t
fdtdec_get_addr_size_auto_parent(const void *blob
, int parent
,
142 int node
, const char *prop_name
,
143 int index
, fdt_size_t
*sizep
,
148 debug("%s: ", __func__
);
150 na
= fdt_address_cells(blob
, parent
);
152 debug("(bad #address-cells)\n");
153 return FDT_ADDR_T_NONE
;
156 ns
= fdt_size_cells(blob
, parent
);
158 debug("(bad #size-cells)\n");
159 return FDT_ADDR_T_NONE
;
162 debug("na=%d, ns=%d, ", na
, ns
);
164 return fdtdec_get_addr_size_fixed(blob
, node
, prop_name
, index
, na
,
165 ns
, sizep
, translate
);
168 fdt_addr_t
fdtdec_get_addr_size_auto_noparent(const void *blob
, int node
,
169 const char *prop_name
, int index
,
175 debug("%s: ", __func__
);
177 parent
= fdt_parent_offset(blob
, node
);
179 debug("(no parent found)\n");
180 return FDT_ADDR_T_NONE
;
183 return fdtdec_get_addr_size_auto_parent(blob
, parent
, node
, prop_name
,
184 index
, sizep
, translate
);
187 fdt_addr_t
fdtdec_get_addr_size(const void *blob
, int node
,
188 const char *prop_name
, fdt_size_t
*sizep
)
190 int ns
= sizep
? (sizeof(fdt_size_t
) / sizeof(fdt32_t
)) : 0;
192 return fdtdec_get_addr_size_fixed(blob
, node
, prop_name
, 0,
193 sizeof(fdt_addr_t
) / sizeof(fdt32_t
),
197 fdt_addr_t
fdtdec_get_addr(const void *blob
, int node
, const char *prop_name
)
199 return fdtdec_get_addr_size(blob
, node
, prop_name
, NULL
);
202 #if defined(CONFIG_PCI) && defined(CONFIG_DM_PCI)
203 int fdtdec_get_pci_addr(const void *blob
, int node
, enum fdt_pci_space type
,
204 const char *prop_name
, struct fdt_pci_addr
*addr
)
210 debug("%s: %s: ", __func__
, prop_name
);
213 * If we follow the pci bus bindings strictly, we should check
214 * the value of the node's parent node's #address-cells and
215 * #size-cells. They need to be 3 and 2 accordingly. However,
216 * for simplicity we skip the check here.
218 cell
= fdt_getprop(blob
, node
, prop_name
, &len
);
222 if ((len
% FDT_PCI_REG_SIZE
) == 0) {
223 int num
= len
/ FDT_PCI_REG_SIZE
;
226 for (i
= 0; i
< num
; i
++) {
227 debug("pci address #%d: %08lx %08lx %08lx\n", i
,
228 (ulong
)fdt32_to_cpu(cell
[0]),
229 (ulong
)fdt32_to_cpu(cell
[1]),
230 (ulong
)fdt32_to_cpu(cell
[2]));
231 if ((fdt32_to_cpu(*cell
) & type
) == type
) {
232 addr
->phys_hi
= fdt32_to_cpu(cell
[0]);
233 addr
->phys_mid
= fdt32_to_cpu(cell
[1]);
234 addr
->phys_lo
= fdt32_to_cpu(cell
[1]);
238 cell
+= (FDT_PCI_ADDR_CELLS
+
253 debug("(not found)\n");
257 int fdtdec_get_pci_vendev(const void *blob
, int node
, u16
*vendor
, u16
*device
)
259 const char *list
, *end
;
262 list
= fdt_getprop(blob
, node
, "compatible", &len
);
269 if (len
>= strlen("pciVVVV,DDDD")) {
270 char *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 strcmp(cell
, "okay") == 0;
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 (fdt_node_check_compatible(blob
, node
,
347 compat_names
[id
]) == 0)
349 return COMPAT_UNKNOWN
;
352 int fdtdec_next_compatible(const void *blob
, int node
, enum fdt_compat_id id
)
354 return fdt_node_offset_by_compatible(blob
, node
, compat_names
[id
]);
357 int fdtdec_next_compatible_subnode(const void *blob
, int node
,
358 enum fdt_compat_id id
, int *depthp
)
361 node
= fdt_next_node(blob
, node
, depthp
);
362 } while (*depthp
> 1);
364 /* If this is a direct subnode, and compatible, return it */
365 if (*depthp
== 1 && 0 == fdt_node_check_compatible(
366 blob
, node
, compat_names
[id
]))
369 return -FDT_ERR_NOTFOUND
;
372 int fdtdec_next_alias(const void *blob
, const char *name
, enum fdt_compat_id id
,
375 #define MAX_STR_LEN 20
376 char str
[MAX_STR_LEN
+ 20];
379 /* snprintf() is not available */
380 assert(strlen(name
) < MAX_STR_LEN
);
381 sprintf(str
, "%.*s%d", MAX_STR_LEN
, name
, *upto
);
382 node
= fdt_path_offset(blob
, str
);
385 err
= fdt_node_check_compatible(blob
, node
, compat_names
[id
]);
389 return -FDT_ERR_NOTFOUND
;
394 int fdtdec_find_aliases_for_id(const void *blob
, const char *name
,
395 enum fdt_compat_id id
, int *node_list
,
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
,
408 int name_len
= strlen(name
);
416 /* find the alias node if present */
417 alias_node
= fdt_path_offset(blob
, "/aliases");
420 * start with nothing, and we can assume that the root node can't
423 memset(nodes
, '\0', sizeof(nodes
));
425 /* First find all the compatible nodes */
426 for (node
= count
= 0; node
>= 0 && count
< maxcount
;) {
427 node
= fdtdec_next_compatible(blob
, node
, id
);
429 nodes
[count
++] = node
;
432 debug("%s: warning: maxcount exceeded with alias '%s'\n",
435 /* Now find all the aliases */
436 for (offset
= fdt_first_property_offset(blob
, alias_node
);
438 offset
= fdt_next_property_offset(blob
, offset
)) {
439 const struct fdt_property
*prop
;
445 prop
= fdt_get_property_by_offset(blob
, offset
, NULL
);
446 path
= fdt_string(blob
, fdt32_to_cpu(prop
->nameoff
));
447 if (prop
->len
&& 0 == strncmp(path
, name
, name_len
))
448 node
= fdt_path_offset(blob
, prop
->data
);
452 /* Get the alias number */
453 number
= simple_strtoul(path
+ name_len
, NULL
, 10);
454 if (number
< 0 || number
>= maxcount
) {
455 debug("%s: warning: alias '%s' is out of range\n",
460 /* Make sure the node we found is actually in our list! */
462 for (j
= 0; j
< count
; j
++)
463 if (nodes
[j
] == node
) {
469 debug("%s: warning: alias '%s' points to a node "
470 "'%s' that is missing or is not compatible "
471 " with '%s'\n", __func__
, path
,
472 fdt_get_name(blob
, node
, NULL
),
478 * Add this node to our list in the right place, and mark
481 if (fdtdec_get_is_enabled(blob
, node
)) {
482 if (node_list
[number
]) {
483 debug("%s: warning: alias '%s' requires that "
484 "a node be placed in the list in a "
485 "position which is already filled by "
486 "node '%s'\n", __func__
, path
,
487 fdt_get_name(blob
, node
, NULL
));
490 node_list
[number
] = node
;
491 if (number
>= num_found
)
492 num_found
= number
+ 1;
497 /* Add any nodes not mentioned by an alias */
498 for (i
= j
= 0; i
< maxcount
; i
++) {
500 for (; j
< maxcount
; j
++)
502 fdtdec_get_is_enabled(blob
, nodes
[j
]))
505 /* Have we run out of nodes to add? */
509 assert(!node_list
[i
]);
510 node_list
[i
] = nodes
[j
++];
519 int fdtdec_get_alias_seq(const void *blob
, const char *base
, int offset
,
522 int base_len
= strlen(base
);
523 const char *find_name
;
528 find_name
= fdt_get_name(blob
, offset
, &find_namelen
);
529 debug("Looking for '%s' at %d, name %s\n", base
, offset
, find_name
);
531 aliases
= fdt_path_offset(blob
, "/aliases");
532 for (prop_offset
= fdt_first_property_offset(blob
, aliases
);
534 prop_offset
= fdt_next_property_offset(blob
, prop_offset
)) {
540 prop
= fdt_getprop_by_offset(blob
, prop_offset
, &name
, &len
);
541 debug(" - %s, %s\n", name
, prop
);
542 if (len
< find_namelen
|| *prop
!= '/' || prop
[len
- 1] ||
543 strncmp(name
, base
, base_len
))
546 slash
= strrchr(prop
, '/');
547 if (strcmp(slash
+ 1, find_name
))
549 val
= trailing_strtol(name
);
552 debug("Found seq %d\n", *seqp
);
557 debug("Not found\n");
561 const char *fdtdec_get_chosen_prop(const void *blob
, const char *name
)
567 chosen_node
= fdt_path_offset(blob
, "/chosen");
568 return fdt_getprop(blob
, chosen_node
, name
, NULL
);
571 int fdtdec_get_chosen_node(const void *blob
, const char *name
)
575 prop
= fdtdec_get_chosen_prop(blob
, name
);
577 return -FDT_ERR_NOTFOUND
;
578 return fdt_path_offset(blob
, prop
);
581 int fdtdec_check_fdt(void)
584 * We must have an FDT, but we cannot panic() yet since the console
585 * is not ready. So for now, just assert(). Boards which need an early
586 * FDT (prior to console ready) will need to make their own
587 * arrangements and do their own checks.
589 assert(!fdtdec_prepare_fdt());
594 * This function is a little odd in that it accesses global data. At some
595 * point if the architecture board.c files merge this will make more sense.
596 * Even now, it is common code.
598 int fdtdec_prepare_fdt(void)
600 if (!gd
->fdt_blob
|| ((uintptr_t)gd
->fdt_blob
& 3) ||
601 fdt_check_header(gd
->fdt_blob
)) {
602 #ifdef CONFIG_SPL_BUILD
603 puts("Missing DTB\n");
605 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");
608 printf("fdt_blob=%p\n", gd
->fdt_blob
);
609 print_buffer((ulong
)gd
->fdt_blob
, gd
->fdt_blob
, 4,
619 int fdtdec_lookup_phandle(const void *blob
, int node
, const char *prop_name
)
624 debug("%s: %s\n", __func__
, prop_name
);
625 phandle
= fdt_getprop(blob
, node
, prop_name
, NULL
);
627 return -FDT_ERR_NOTFOUND
;
629 lookup
= fdt_node_offset_by_phandle(blob
, fdt32_to_cpu(*phandle
));
634 * Look up a property in a node and check that it has a minimum length.
636 * @param blob FDT blob
637 * @param node node to examine
638 * @param prop_name name of property to find
639 * @param min_len minimum property length in bytes
640 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
641 found, or -FDT_ERR_BADLAYOUT if not enough data
642 * @return pointer to cell, which is only valid if err == 0
644 static const void *get_prop_check_min_len(const void *blob
, int node
,
645 const char *prop_name
, int min_len
,
651 debug("%s: %s\n", __func__
, prop_name
);
652 cell
= fdt_getprop(blob
, node
, prop_name
, &len
);
654 *err
= -FDT_ERR_NOTFOUND
;
655 else if (len
< min_len
)
656 *err
= -FDT_ERR_BADLAYOUT
;
662 int fdtdec_get_int_array(const void *blob
, int node
, const char *prop_name
,
663 u32
*array
, int count
)
668 debug("%s: %s\n", __func__
, prop_name
);
669 cell
= get_prop_check_min_len(blob
, node
, prop_name
,
670 sizeof(u32
) * count
, &err
);
674 for (i
= 0; i
< count
; i
++)
675 array
[i
] = fdt32_to_cpu(cell
[i
]);
680 int fdtdec_get_int_array_count(const void *blob
, int node
,
681 const char *prop_name
, u32
*array
, int count
)
687 debug("%s: %s\n", __func__
, prop_name
);
688 cell
= fdt_getprop(blob
, node
, prop_name
, &len
);
690 return -FDT_ERR_NOTFOUND
;
691 elems
= len
/ sizeof(u32
);
694 for (i
= 0; i
< count
; i
++)
695 array
[i
] = fdt32_to_cpu(cell
[i
]);
700 const u32
*fdtdec_locate_array(const void *blob
, int node
,
701 const char *prop_name
, int count
)
706 cell
= get_prop_check_min_len(blob
, node
, prop_name
,
707 sizeof(u32
) * count
, &err
);
708 return err
? NULL
: cell
;
711 int fdtdec_get_bool(const void *blob
, int node
, const char *prop_name
)
716 debug("%s: %s\n", __func__
, prop_name
);
717 cell
= fdt_getprop(blob
, node
, prop_name
, &len
);
721 int fdtdec_parse_phandle_with_args(const void *blob
, int src_node
,
722 const char *list_name
,
723 const char *cells_name
,
724 int cell_count
, int index
,
725 struct fdtdec_phandle_args
*out_args
)
727 const __be32
*list
, *list_end
;
728 int rc
= 0, size
, cur_index
= 0;
733 /* Retrieve the phandle list property */
734 list
= fdt_getprop(blob
, src_node
, list_name
, &size
);
737 list_end
= list
+ size
/ sizeof(*list
);
739 /* Loop over the phandles until all the requested entry is found */
740 while (list
< list_end
) {
745 * If phandle is 0, then it is an empty entry with no
746 * arguments. Skip forward to the next entry.
748 phandle
= be32_to_cpup(list
++);
751 * Find the provider node and parse the #*-cells
752 * property to determine the argument length.
754 * This is not needed if the cell count is hard-coded
755 * (i.e. cells_name not set, but cell_count is set),
756 * except when we're going to return the found node
759 if (cells_name
|| cur_index
== index
) {
760 node
= fdt_node_offset_by_phandle(blob
,
763 debug("%s: could not find phandle\n",
764 fdt_get_name(blob
, src_node
,
771 count
= fdtdec_get_int(blob
, node
, cells_name
,
774 debug("%s: could not get %s for %s\n",
775 fdt_get_name(blob
, src_node
,
778 fdt_get_name(blob
, node
,
787 * Make sure that the arguments actually fit in the
788 * remaining property data length
790 if (list
+ count
> list_end
) {
791 debug("%s: arguments longer than property\n",
792 fdt_get_name(blob
, src_node
, NULL
));
798 * All of the error cases above bail out of the loop, so at
799 * this point, the parsing is successful. If the requested
800 * index matches, then fill the out_args structure and return,
801 * or return -ENOENT for an empty entry.
804 if (cur_index
== index
) {
811 if (count
> MAX_PHANDLE_ARGS
) {
812 debug("%s: too many arguments %d\n",
813 fdt_get_name(blob
, src_node
,
815 count
= MAX_PHANDLE_ARGS
;
817 out_args
->node
= node
;
818 out_args
->args_count
= count
;
819 for (i
= 0; i
< count
; i
++) {
821 be32_to_cpup(list
++);
825 /* Found it! return success */
835 * Result will be one of:
836 * -ENOENT : index is for empty phandle
837 * -EINVAL : parsing error on data
838 * [1..n] : Number of phandle (count mode; when index = -1)
840 rc
= index
< 0 ? cur_index
: -ENOENT
;
845 int fdtdec_get_child_count(const void *blob
, int node
)
850 fdt_for_each_subnode(subnode
, blob
, node
)
856 int fdtdec_get_byte_array(const void *blob
, int node
, const char *prop_name
,
857 u8
*array
, int count
)
862 cell
= get_prop_check_min_len(blob
, node
, prop_name
, count
, &err
);
864 memcpy(array
, cell
, count
);
868 const u8
*fdtdec_locate_byte_array(const void *blob
, int node
,
869 const char *prop_name
, int count
)
874 cell
= get_prop_check_min_len(blob
, node
, prop_name
, count
, &err
);
880 int fdtdec_get_config_int(const void *blob
, const char *prop_name
,
885 debug("%s: %s\n", __func__
, prop_name
);
886 config_node
= fdt_path_offset(blob
, "/config");
889 return fdtdec_get_int(blob
, config_node
, prop_name
, default_val
);
892 int fdtdec_get_config_bool(const void *blob
, const char *prop_name
)
897 debug("%s: %s\n", __func__
, prop_name
);
898 config_node
= fdt_path_offset(blob
, "/config");
901 prop
= fdt_get_property(blob
, config_node
, prop_name
, NULL
);
906 char *fdtdec_get_config_string(const void *blob
, const char *prop_name
)
912 debug("%s: %s\n", __func__
, prop_name
);
913 nodeoffset
= fdt_path_offset(blob
, "/config");
917 nodep
= fdt_getprop(blob
, nodeoffset
, prop_name
, &len
);
921 return (char *)nodep
;
924 int fdtdec_decode_region(const void *blob
, int node
, const char *prop_name
,
925 fdt_addr_t
*basep
, fdt_size_t
*sizep
)
927 const fdt_addr_t
*cell
;
930 debug("%s: %s: %s\n", __func__
, fdt_get_name(blob
, node
, NULL
),
932 cell
= fdt_getprop(blob
, node
, prop_name
, &len
);
933 if (!cell
|| (len
< sizeof(fdt_addr_t
) * 2)) {
934 debug("cell=%p, len=%d\n", cell
, len
);
938 *basep
= fdt_addr_to_cpu(*cell
);
939 *sizep
= fdt_size_to_cpu(cell
[1]);
940 debug("%s: base=%08lx, size=%lx\n", __func__
, (ulong
)*basep
,
946 u64
fdtdec_get_number(const fdt32_t
*ptr
, unsigned int cells
)
951 number
= (number
<< 32) | fdt32_to_cpu(*ptr
++);
956 int fdt_get_resource(const void *fdt
, int node
, const char *property
,
957 unsigned int index
, struct fdt_resource
*res
)
959 const fdt32_t
*ptr
, *end
;
960 int na
, ns
, len
, parent
;
963 parent
= fdt_parent_offset(fdt
, node
);
967 na
= fdt_address_cells(fdt
, parent
);
968 ns
= fdt_size_cells(fdt
, parent
);
970 ptr
= fdt_getprop(fdt
, node
, property
, &len
);
974 end
= ptr
+ len
/ sizeof(*ptr
);
976 while (ptr
+ na
+ ns
<= end
) {
978 res
->start
= fdtdec_get_number(ptr
, na
);
979 res
->end
= res
->start
;
980 res
->end
+= fdtdec_get_number(&ptr
[na
], ns
) - 1;
988 return -FDT_ERR_NOTFOUND
;
991 int fdt_get_named_resource(const void *fdt
, int node
, const char *property
,
992 const char *prop_names
, const char *name
,
993 struct fdt_resource
*res
)
997 index
= fdt_stringlist_search(fdt
, node
, prop_names
, name
);
1001 return fdt_get_resource(fdt
, node
, property
, index
, res
);
1004 int fdtdec_decode_memory_region(const void *blob
, int config_node
,
1005 const char *mem_type
, const char *suffix
,
1006 fdt_addr_t
*basep
, fdt_size_t
*sizep
)
1010 fdt_size_t size
, offset_size
;
1011 fdt_addr_t base
, offset
;
1014 if (config_node
== -1) {
1015 config_node
= fdt_path_offset(blob
, "/config");
1016 if (config_node
< 0) {
1017 debug("%s: Cannot find /config node\n", __func__
);
1024 snprintf(prop_name
, sizeof(prop_name
), "%s-memory%s", mem_type
,
1026 mem
= fdt_getprop(blob
, config_node
, prop_name
, NULL
);
1028 debug("%s: No memory type for '%s', using /memory\n", __func__
,
1033 node
= fdt_path_offset(blob
, mem
);
1035 debug("%s: Failed to find node '%s': %s\n", __func__
, mem
,
1036 fdt_strerror(node
));
1041 * Not strictly correct - the memory may have multiple banks. We just
1044 if (fdtdec_decode_region(blob
, node
, "reg", &base
, &size
)) {
1045 debug("%s: Failed to decode memory region %s\n", __func__
,
1050 snprintf(prop_name
, sizeof(prop_name
), "%s-offset%s", mem_type
,
1052 if (fdtdec_decode_region(blob
, config_node
, prop_name
, &offset
,
1054 debug("%s: Failed to decode memory region '%s'\n", __func__
,
1059 *basep
= base
+ offset
;
1060 *sizep
= offset_size
;
1065 static int decode_timing_property(const void *blob
, int node
, const char *name
,
1066 struct timing_entry
*result
)
1068 int length
, ret
= 0;
1071 prop
= fdt_getprop(blob
, node
, name
, &length
);
1073 debug("%s: could not find property %s\n",
1074 fdt_get_name(blob
, node
, NULL
), name
);
1078 if (length
== sizeof(u32
)) {
1079 result
->typ
= fdtdec_get_int(blob
, node
, name
, 0);
1080 result
->min
= result
->typ
;
1081 result
->max
= result
->typ
;
1083 ret
= fdtdec_get_int_array(blob
, node
, name
, &result
->min
, 3);
1089 int fdtdec_decode_display_timing(const void *blob
, int parent
, int index
,
1090 struct display_timing
*dt
)
1092 int i
, node
, timings_node
;
1096 timings_node
= fdt_subnode_offset(blob
, parent
, "display-timings");
1097 if (timings_node
< 0)
1098 return timings_node
;
1100 for (i
= 0, node
= fdt_first_subnode(blob
, timings_node
);
1101 node
> 0 && i
!= index
;
1102 node
= fdt_next_subnode(blob
, node
))
1108 memset(dt
, 0, sizeof(*dt
));
1110 ret
|= decode_timing_property(blob
, node
, "hback-porch",
1112 ret
|= decode_timing_property(blob
, node
, "hfront-porch",
1114 ret
|= decode_timing_property(blob
, node
, "hactive", &dt
->hactive
);
1115 ret
|= decode_timing_property(blob
, node
, "hsync-len", &dt
->hsync_len
);
1116 ret
|= decode_timing_property(blob
, node
, "vback-porch",
1118 ret
|= decode_timing_property(blob
, node
, "vfront-porch",
1120 ret
|= decode_timing_property(blob
, node
, "vactive", &dt
->vactive
);
1121 ret
|= decode_timing_property(blob
, node
, "vsync-len", &dt
->vsync_len
);
1122 ret
|= decode_timing_property(blob
, node
, "clock-frequency",
1126 val
= fdtdec_get_int(blob
, node
, "vsync-active", -1);
1128 dt
->flags
|= val
? DISPLAY_FLAGS_VSYNC_HIGH
:
1129 DISPLAY_FLAGS_VSYNC_LOW
;
1131 val
= fdtdec_get_int(blob
, node
, "hsync-active", -1);
1133 dt
->flags
|= val
? DISPLAY_FLAGS_HSYNC_HIGH
:
1134 DISPLAY_FLAGS_HSYNC_LOW
;
1136 val
= fdtdec_get_int(blob
, node
, "de-active", -1);
1138 dt
->flags
|= val
? DISPLAY_FLAGS_DE_HIGH
:
1139 DISPLAY_FLAGS_DE_LOW
;
1141 val
= fdtdec_get_int(blob
, node
, "pixelclk-active", -1);
1143 dt
->flags
|= val
? DISPLAY_FLAGS_PIXDATA_POSEDGE
:
1144 DISPLAY_FLAGS_PIXDATA_NEGEDGE
;
1147 if (fdtdec_get_bool(blob
, node
, "interlaced"))
1148 dt
->flags
|= DISPLAY_FLAGS_INTERLACED
;
1149 if (fdtdec_get_bool(blob
, node
, "doublescan"))
1150 dt
->flags
|= DISPLAY_FLAGS_DOUBLESCAN
;
1151 if (fdtdec_get_bool(blob
, node
, "doubleclk"))
1152 dt
->flags
|= DISPLAY_FLAGS_DOUBLECLK
;
1157 int fdtdec_setup_memory_size(void)
1160 struct fdt_resource res
;
1162 mem
= fdt_path_offset(gd
->fdt_blob
, "/memory");
1164 debug("%s: Missing /memory node\n", __func__
);
1168 ret
= fdt_get_resource(gd
->fdt_blob
, mem
, "reg", 0, &res
);
1170 debug("%s: Unable to decode first memory bank\n", __func__
);
1174 gd
->ram_size
= (phys_size_t
)(res
.end
- res
.start
+ 1);
1175 debug("%s: Initial DRAM size %llx\n", __func__
,
1176 (unsigned long long)gd
->ram_size
);
1181 #if defined(CONFIG_NR_DRAM_BANKS)
1182 int fdtdec_setup_memory_banksize(void)
1184 int bank
, ret
, mem
, reg
= 0;
1185 struct fdt_resource res
;
1187 mem
= fdt_node_offset_by_prop_value(gd
->fdt_blob
, -1, "device_type",
1190 debug("%s: Missing /memory node\n", __func__
);
1194 for (bank
= 0; bank
< CONFIG_NR_DRAM_BANKS
; bank
++) {
1195 ret
= fdt_get_resource(gd
->fdt_blob
, mem
, "reg", reg
++, &res
);
1196 if (ret
== -FDT_ERR_NOTFOUND
) {
1198 mem
= fdt_node_offset_by_prop_value(gd
->fdt_blob
, mem
,
1201 if (mem
== -FDT_ERR_NOTFOUND
)
1204 ret
= fdt_get_resource(gd
->fdt_blob
, mem
, "reg", reg
++, &res
);
1205 if (ret
== -FDT_ERR_NOTFOUND
)
1212 gd
->bd
->bi_dram
[bank
].start
= (phys_addr_t
)res
.start
;
1213 gd
->bd
->bi_dram
[bank
].size
=
1214 (phys_size_t
)(res
.end
- res
.start
+ 1);
1216 debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
1218 (unsigned long long)gd
->bd
->bi_dram
[bank
].start
,
1219 (unsigned long long)gd
->bd
->bi_dram
[bank
].size
);
1226 #if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1227 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\
1228 CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO)
1229 static int uncompress_blob(const void *src
, ulong sz_src
, void **dstp
)
1231 size_t sz_out
= CONFIG_SPL_MULTI_DTB_FIT_UNCOMPRESS_SZ
;
1232 ulong sz_in
= sz_src
;
1236 if (CONFIG_IS_ENABLED(GZIP
))
1237 if (gzip_parse_header(src
, sz_in
) < 0)
1239 if (CONFIG_IS_ENABLED(LZO
))
1240 if (!lzop_is_valid_header(src
))
1243 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC
)) {
1244 dst
= malloc(sz_out
);
1246 puts("uncompress_blob: Unable to allocate memory\n");
1250 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA)
1251 dst
= (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR
);
1257 if (CONFIG_IS_ENABLED(GZIP
))
1258 rc
= gunzip(dst
, sz_out
, (u8
*)src
, &sz_in
);
1259 else if (CONFIG_IS_ENABLED(LZO
))
1260 rc
= lzop_decompress(src
, sz_in
, dst
, &sz_out
);
1263 /* not a valid compressed blob */
1264 puts("uncompress_blob: Unable to uncompress\n");
1265 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC
))
1273 static int uncompress_blob(const void *src
, ulong sz_src
, void **dstp
)
1280 #if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
1282 * For CONFIG_OF_SEPARATE, the board may optionally implement this to
1283 * provide and/or fixup the fdt.
1285 __weak
void *board_fdt_blob_setup(void)
1287 void *fdt_blob
= NULL
;
1288 #ifdef CONFIG_SPL_BUILD
1289 /* FDT is at end of BSS unless it is in a different memory region */
1290 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS
))
1291 fdt_blob
= (ulong
*)&_image_binary_end
;
1293 fdt_blob
= (ulong
*)&__bss_end
;
1295 /* FDT is at end of image */
1296 fdt_blob
= (ulong
*)&_end
;
1302 int fdtdec_setup(void)
1304 #if CONFIG_IS_ENABLED(OF_CONTROL)
1305 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1308 # ifdef CONFIG_OF_EMBED
1309 /* Get a pointer to the FDT */
1310 # ifdef CONFIG_SPL_BUILD
1311 gd
->fdt_blob
= __dtb_dt_spl_begin
;
1313 gd
->fdt_blob
= __dtb_dt_begin
;
1315 # elif defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
1316 /* Allow the board to override the fdt address. */
1317 gd
->fdt_blob
= board_fdt_blob_setup();
1318 # elif defined(CONFIG_OF_HOSTFILE)
1319 if (sandbox_read_fdt_from_file()) {
1320 puts("Failed to read control FDT\n");
1324 # ifndef CONFIG_SPL_BUILD
1325 /* Allow the early environment to override the fdt address */
1326 gd
->fdt_blob
= (void *)env_get_ulong("fdtcontroladdr", 16,
1327 (uintptr_t)gd
->fdt_blob
);
1330 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1332 * Try and uncompress the blob.
1333 * Unfortunately there is no way to know how big the input blob really
1334 * is. So let us set the maximum input size arbitrarily high. 16MB
1335 * ought to be more than enough for packed DTBs.
1337 if (uncompress_blob(gd
->fdt_blob
, 0x1000000, &fdt_blob
) == 0)
1338 gd
->fdt_blob
= fdt_blob
;
1341 * Check if blob is a FIT images containings DTBs.
1342 * If so, pick the most relevant
1344 fdt_blob
= locate_dtb_in_fit(gd
->fdt_blob
);
1346 gd
->fdt_blob
= fdt_blob
;
1350 return fdtdec_prepare_fdt();
1353 #endif /* !USE_HOSTCC */