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 gd
->fdt_blob
= __dtb_dt_begin
;
1272 # elif defined CONFIG_OF_SEPARATE
1273 # ifdef CONFIG_SPL_BUILD
1274 /* FDT is at end of BSS unless it is in a different memory region */
1275 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS
))
1276 gd
->fdt_blob
= (ulong
*)&_image_binary_end
;
1278 gd
->fdt_blob
= (ulong
*)&__bss_end
;
1280 /* FDT is at end of image */
1281 gd
->fdt_blob
= (ulong
*)&_end
;
1283 # elif defined(CONFIG_OF_BOARD)
1284 /* Allow the board to override the fdt address. */
1285 gd
->fdt_blob
= board_fdt_blob_setup();
1286 # elif defined(CONFIG_OF_HOSTFILE)
1287 if (sandbox_read_fdt_from_file()) {
1288 puts("Failed to read control FDT\n");
1292 # ifndef CONFIG_SPL_BUILD
1293 /* Allow the early environment to override the fdt address */
1294 gd
->fdt_blob
= (void *)env_get_ulong("fdtcontroladdr", 16,
1295 (uintptr_t)gd
->fdt_blob
);
1298 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1300 * Try and uncompress the blob.
1301 * Unfortunately there is no way to know how big the input blob really
1302 * is. So let us set the maximum input size arbitrarily high. 16MB
1303 * ought to be more than enough for packed DTBs.
1305 if (uncompress_blob(gd
->fdt_blob
, 0x1000000, &fdt_blob
) == 0)
1306 gd
->fdt_blob
= fdt_blob
;
1309 * Check if blob is a FIT images containings DTBs.
1310 * If so, pick the most relevant
1312 fdt_blob
= locate_dtb_in_fit(gd
->fdt_blob
);
1314 gd
->fdt_blob
= fdt_blob
;
1318 return fdtdec_prepare_fdt();
1321 #endif /* !USE_HOSTCC */