]>
git.ipfire.org Git - people/ms/u-boot.git/blob - lib/fdtdec.c
a8872b058961a4419338e965f474272ef90d52a9
2 * Copyright (c) 2011 The Chromium OS Authors.
3 * SPDX-License-Identifier: GPL-2.0+
12 #include <linux/ctype.h>
16 DECLARE_GLOBAL_DATA_PTR
;
19 * Here are the type we know about. One day we might allow drivers to
20 * register. For now we just put them here. The COMPAT macro allows us to
21 * turn this into a sparse list later, and keeps the ID with the name.
23 #define COMPAT(id, name) name
24 static const char * const compat_names
[COMPAT_COUNT
] = {
25 COMPAT(UNKNOWN
, "<none>"),
26 COMPAT(NVIDIA_TEGRA20_USB
, "nvidia,tegra20-ehci"),
27 COMPAT(NVIDIA_TEGRA30_USB
, "nvidia,tegra30-ehci"),
28 COMPAT(NVIDIA_TEGRA114_USB
, "nvidia,tegra114-ehci"),
29 COMPAT(NVIDIA_TEGRA114_I2C
, "nvidia,tegra114-i2c"),
30 COMPAT(NVIDIA_TEGRA20_I2C
, "nvidia,tegra20-i2c"),
31 COMPAT(NVIDIA_TEGRA20_DVC
, "nvidia,tegra20-i2c-dvc"),
32 COMPAT(NVIDIA_TEGRA20_EMC
, "nvidia,tegra20-emc"),
33 COMPAT(NVIDIA_TEGRA20_EMC_TABLE
, "nvidia,tegra20-emc-table"),
34 COMPAT(NVIDIA_TEGRA20_KBC
, "nvidia,tegra20-kbc"),
35 COMPAT(NVIDIA_TEGRA20_NAND
, "nvidia,tegra20-nand"),
36 COMPAT(NVIDIA_TEGRA20_PWM
, "nvidia,tegra20-pwm"),
37 COMPAT(NVIDIA_TEGRA20_DC
, "nvidia,tegra20-dc"),
38 COMPAT(NVIDIA_TEGRA124_SDMMC
, "nvidia,tegra124-sdhci"),
39 COMPAT(NVIDIA_TEGRA30_SDMMC
, "nvidia,tegra30-sdhci"),
40 COMPAT(NVIDIA_TEGRA20_SDMMC
, "nvidia,tegra20-sdhci"),
41 COMPAT(NVIDIA_TEGRA20_SFLASH
, "nvidia,tegra20-sflash"),
42 COMPAT(NVIDIA_TEGRA20_SLINK
, "nvidia,tegra20-slink"),
43 COMPAT(NVIDIA_TEGRA114_SPI
, "nvidia,tegra114-spi"),
44 COMPAT(SMSC_LAN9215
, "smsc,lan9215"),
45 COMPAT(SAMSUNG_EXYNOS5_SROMC
, "samsung,exynos-sromc"),
46 COMPAT(SAMSUNG_S3C2440_I2C
, "samsung,s3c2440-i2c"),
47 COMPAT(SAMSUNG_EXYNOS5_SOUND
, "samsung,exynos-sound"),
48 COMPAT(WOLFSON_WM8994_CODEC
, "wolfson,wm8994-codec"),
49 COMPAT(SAMSUNG_EXYNOS_SPI
, "samsung,exynos-spi"),
50 COMPAT(GOOGLE_CROS_EC
, "google,cros-ec"),
51 COMPAT(GOOGLE_CROS_EC_KEYB
, "google,cros-ec-keyb"),
52 COMPAT(SAMSUNG_EXYNOS_EHCI
, "samsung,exynos-ehci"),
53 COMPAT(SAMSUNG_EXYNOS5_XHCI
, "samsung,exynos5250-xhci"),
54 COMPAT(SAMSUNG_EXYNOS_USB_PHY
, "samsung,exynos-usb-phy"),
55 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY
, "samsung,exynos5250-usb3-phy"),
56 COMPAT(SAMSUNG_EXYNOS_TMU
, "samsung,exynos-tmu"),
57 COMPAT(SAMSUNG_EXYNOS_FIMD
, "samsung,exynos-fimd"),
58 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI
, "samsung,exynos-mipi-dsi"),
59 COMPAT(SAMSUNG_EXYNOS5_DP
, "samsung,exynos5-dp"),
60 COMPAT(SAMSUNG_EXYNOS_DWMMC
, "samsung,exynos-dwmmc"),
61 COMPAT(SAMSUNG_EXYNOS_MMC
, "samsung,exynos-mmc"),
62 COMPAT(SAMSUNG_EXYNOS_SERIAL
, "samsung,exynos4210-uart"),
63 COMPAT(MAXIM_MAX77686_PMIC
, "maxim,max77686_pmic"),
64 COMPAT(GENERIC_SPI_FLASH
, "spi-flash"),
65 COMPAT(MAXIM_98095_CODEC
, "maxim,max98095-codec"),
66 COMPAT(INFINEON_SLB9635_TPM
, "infineon,slb9635-tpm"),
67 COMPAT(INFINEON_SLB9645_TPM
, "infineon,slb9645-tpm"),
68 COMPAT(SAMSUNG_EXYNOS5_I2C
, "samsung,exynos5-hsi2c"),
69 COMPAT(SANDBOX_HOST_EMULATION
, "sandbox,host-emulation"),
70 COMPAT(SANDBOX_LCD_SDL
, "sandbox,lcd-sdl"),
71 COMPAT(TI_TPS65090
, "ti,tps65090"),
72 COMPAT(COMPAT_NXP_PTN3460
, "nxp,ptn3460"),
73 COMPAT(SAMSUNG_EXYNOS_SYSMMU
, "samsung,sysmmu-v3.3"),
74 COMPAT(PARADE_PS8625
, "parade,ps8625"),
75 COMPAT(COMPAT_INTEL_LPC
, "intel,lpc"),
76 COMPAT(INTEL_MICROCODE
, "intel,microcode"),
77 COMPAT(MEMORY_SPD
, "memory-spd"),
78 COMPAT(INTEL_PANTHERPOINT_AHCI
, "intel,pantherpoint-ahci"),
79 COMPAT(INTEL_MODEL_206AX
, "intel,model-206ax"),
80 COMPAT(INTEL_GMA
, "intel,gma"),
83 const char *fdtdec_get_compatible(enum fdt_compat_id id
)
85 /* We allow reading of the 'unknown' ID for testing purposes */
86 assert(id
>= 0 && id
< COMPAT_COUNT
);
87 return compat_names
[id
];
90 fdt_addr_t
fdtdec_get_addr_size(const void *blob
, int node
,
91 const char *prop_name
, fdt_size_t
*sizep
)
93 const fdt_addr_t
*cell
;
96 debug("%s: %s: ", __func__
, prop_name
);
97 cell
= fdt_getprop(blob
, node
, prop_name
, &len
);
98 if (cell
&& ((!sizep
&& len
== sizeof(fdt_addr_t
)) ||
99 len
== sizeof(fdt_addr_t
) * 2)) {
100 fdt_addr_t addr
= fdt_addr_to_cpu(*cell
);
102 const fdt_size_t
*size
;
104 size
= (fdt_size_t
*)((char *)cell
+
106 *sizep
= fdt_size_to_cpu(*size
);
107 debug("addr=%08lx, size=%08x\n",
108 (ulong
)addr
, *sizep
);
110 debug("%08lx\n", (ulong
)addr
);
114 debug("(not found)\n");
115 return FDT_ADDR_T_NONE
;
118 fdt_addr_t
fdtdec_get_addr(const void *blob
, int node
,
119 const char *prop_name
)
121 return fdtdec_get_addr_size(blob
, node
, prop_name
, NULL
);
124 uint64_t fdtdec_get_uint64(const void *blob
, int node
, const char *prop_name
,
125 uint64_t default_val
)
127 const uint64_t *cell64
;
130 cell64
= fdt_getprop(blob
, node
, prop_name
, &length
);
131 if (!cell64
|| length
< sizeof(*cell64
))
134 return fdt64_to_cpu(*cell64
);
137 int fdtdec_get_is_enabled(const void *blob
, int node
)
142 * It should say "okay", so only allow that. Some fdts use "ok" but
143 * this is a bug. Please fix your device tree source file. See here
146 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
148 cell
= fdt_getprop(blob
, node
, "status", NULL
);
150 return 0 == strcmp(cell
, "okay");
154 enum fdt_compat_id
fdtdec_lookup(const void *blob
, int node
)
156 enum fdt_compat_id id
;
158 /* Search our drivers */
159 for (id
= COMPAT_UNKNOWN
; id
< COMPAT_COUNT
; id
++)
160 if (0 == fdt_node_check_compatible(blob
, node
,
163 return COMPAT_UNKNOWN
;
166 int fdtdec_next_compatible(const void *blob
, int node
,
167 enum fdt_compat_id id
)
169 return fdt_node_offset_by_compatible(blob
, node
, compat_names
[id
]);
172 int fdtdec_next_compatible_subnode(const void *blob
, int node
,
173 enum fdt_compat_id id
, int *depthp
)
176 node
= fdt_next_node(blob
, node
, depthp
);
177 } while (*depthp
> 1);
179 /* If this is a direct subnode, and compatible, return it */
180 if (*depthp
== 1 && 0 == fdt_node_check_compatible(
181 blob
, node
, compat_names
[id
]))
184 return -FDT_ERR_NOTFOUND
;
187 int fdtdec_next_alias(const void *blob
, const char *name
,
188 enum fdt_compat_id id
, int *upto
)
190 #define MAX_STR_LEN 20
191 char str
[MAX_STR_LEN
+ 20];
194 /* snprintf() is not available */
195 assert(strlen(name
) < MAX_STR_LEN
);
196 sprintf(str
, "%.*s%d", MAX_STR_LEN
, name
, *upto
);
197 node
= fdt_path_offset(blob
, str
);
200 err
= fdt_node_check_compatible(blob
, node
, compat_names
[id
]);
204 return -FDT_ERR_NOTFOUND
;
209 int fdtdec_find_aliases_for_id(const void *blob
, const char *name
,
210 enum fdt_compat_id id
, int *node_list
, int maxcount
)
212 memset(node_list
, '\0', sizeof(*node_list
) * maxcount
);
214 return fdtdec_add_aliases_for_id(blob
, name
, id
, node_list
, maxcount
);
217 /* TODO: Can we tighten this code up a little? */
218 int fdtdec_add_aliases_for_id(const void *blob
, const char *name
,
219 enum fdt_compat_id id
, int *node_list
, int maxcount
)
221 int name_len
= strlen(name
);
229 /* find the alias node if present */
230 alias_node
= fdt_path_offset(blob
, "/aliases");
233 * start with nothing, and we can assume that the root node can't
236 memset(nodes
, '\0', sizeof(nodes
));
238 /* First find all the compatible nodes */
239 for (node
= count
= 0; node
>= 0 && count
< maxcount
;) {
240 node
= fdtdec_next_compatible(blob
, node
, id
);
242 nodes
[count
++] = node
;
245 debug("%s: warning: maxcount exceeded with alias '%s'\n",
248 /* Now find all the aliases */
249 for (offset
= fdt_first_property_offset(blob
, alias_node
);
251 offset
= fdt_next_property_offset(blob
, offset
)) {
252 const struct fdt_property
*prop
;
258 prop
= fdt_get_property_by_offset(blob
, offset
, NULL
);
259 path
= fdt_string(blob
, fdt32_to_cpu(prop
->nameoff
));
260 if (prop
->len
&& 0 == strncmp(path
, name
, name_len
))
261 node
= fdt_path_offset(blob
, prop
->data
);
265 /* Get the alias number */
266 number
= simple_strtoul(path
+ name_len
, NULL
, 10);
267 if (number
< 0 || number
>= maxcount
) {
268 debug("%s: warning: alias '%s' is out of range\n",
273 /* Make sure the node we found is actually in our list! */
275 for (j
= 0; j
< count
; j
++)
276 if (nodes
[j
] == node
) {
282 debug("%s: warning: alias '%s' points to a node "
283 "'%s' that is missing or is not compatible "
284 " with '%s'\n", __func__
, path
,
285 fdt_get_name(blob
, node
, NULL
),
291 * Add this node to our list in the right place, and mark
294 if (fdtdec_get_is_enabled(blob
, node
)) {
295 if (node_list
[number
]) {
296 debug("%s: warning: alias '%s' requires that "
297 "a node be placed in the list in a "
298 "position which is already filled by "
299 "node '%s'\n", __func__
, path
,
300 fdt_get_name(blob
, node
, NULL
));
303 node_list
[number
] = node
;
304 if (number
>= num_found
)
305 num_found
= number
+ 1;
310 /* Add any nodes not mentioned by an alias */
311 for (i
= j
= 0; i
< maxcount
; i
++) {
313 for (; j
< maxcount
; j
++)
315 fdtdec_get_is_enabled(blob
, nodes
[j
]))
318 /* Have we run out of nodes to add? */
322 assert(!node_list
[i
]);
323 node_list
[i
] = nodes
[j
++];
332 int fdtdec_get_alias_seq(const void *blob
, const char *base
, int offset
,
335 int base_len
= strlen(base
);
336 const char *find_name
;
341 find_name
= fdt_get_name(blob
, offset
, &find_namelen
);
342 debug("Looking for '%s' at %d, name %s\n", base
, offset
, find_name
);
344 aliases
= fdt_path_offset(blob
, "/aliases");
345 for (prop_offset
= fdt_first_property_offset(blob
, aliases
);
347 prop_offset
= fdt_next_property_offset(blob
, prop_offset
)) {
354 prop
= fdt_getprop_by_offset(blob
, prop_offset
, &name
, &len
);
355 debug(" - %s, %s\n", name
, prop
);
356 if (len
< find_namelen
|| *prop
!= '/' || prop
[len
- 1] ||
357 strncmp(name
, base
, base_len
))
360 slash
= strrchr(prop
, '/');
361 if (strcmp(slash
+ 1, find_name
))
363 for (p
= name
+ strlen(name
) - 1; p
> name
; p
--) {
365 *seqp
= simple_strtoul(p
+ 1, NULL
, 10);
366 debug("Found seq %d\n", *seqp
);
372 debug("Not found\n");
376 int fdtdec_get_alias_node(const void *blob
, const char *name
)
383 return -FDT_ERR_NOTFOUND
;
384 alias_node
= fdt_path_offset(blob
, "/aliases");
385 prop
= fdt_getprop(blob
, alias_node
, name
, &len
);
387 return -FDT_ERR_NOTFOUND
;
388 return fdt_path_offset(blob
, prop
);
391 int fdtdec_get_chosen_node(const void *blob
, const char *name
)
398 return -FDT_ERR_NOTFOUND
;
399 chosen_node
= fdt_path_offset(blob
, "/chosen");
400 prop
= fdt_getprop(blob
, chosen_node
, name
, &len
);
402 return -FDT_ERR_NOTFOUND
;
403 return fdt_path_offset(blob
, prop
);
406 int fdtdec_check_fdt(void)
409 * We must have an FDT, but we cannot panic() yet since the console
410 * is not ready. So for now, just assert(). Boards which need an early
411 * FDT (prior to console ready) will need to make their own
412 * arrangements and do their own checks.
414 assert(!fdtdec_prepare_fdt());
419 * This function is a little odd in that it accesses global data. At some
420 * point if the architecture board.c files merge this will make more sense.
421 * Even now, it is common code.
423 int fdtdec_prepare_fdt(void)
425 if (!gd
->fdt_blob
|| ((uintptr_t)gd
->fdt_blob
& 3) ||
426 fdt_check_header(gd
->fdt_blob
)) {
427 printf("No valid FDT found - please append one to U-Boot "
428 "binary, use u-boot-dtb.bin or define "
429 "CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n");
435 int fdtdec_lookup_phandle(const void *blob
, int node
, const char *prop_name
)
440 debug("%s: %s\n", __func__
, prop_name
);
441 phandle
= fdt_getprop(blob
, node
, prop_name
, NULL
);
443 return -FDT_ERR_NOTFOUND
;
445 lookup
= fdt_node_offset_by_phandle(blob
, fdt32_to_cpu(*phandle
));
450 * Look up a property in a node and check that it has a minimum length.
452 * @param blob FDT blob
453 * @param node node to examine
454 * @param prop_name name of property to find
455 * @param min_len minimum property length in bytes
456 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
457 found, or -FDT_ERR_BADLAYOUT if not enough data
458 * @return pointer to cell, which is only valid if err == 0
460 static const void *get_prop_check_min_len(const void *blob
, int node
,
461 const char *prop_name
, int min_len
, int *err
)
466 debug("%s: %s\n", __func__
, prop_name
);
467 cell
= fdt_getprop(blob
, node
, prop_name
, &len
);
469 *err
= -FDT_ERR_NOTFOUND
;
470 else if (len
< min_len
)
471 *err
= -FDT_ERR_BADLAYOUT
;
477 int fdtdec_get_int_array(const void *blob
, int node
, const char *prop_name
,
478 u32
*array
, int count
)
483 debug("%s: %s\n", __func__
, prop_name
);
484 cell
= get_prop_check_min_len(blob
, node
, prop_name
,
485 sizeof(u32
) * count
, &err
);
487 for (i
= 0; i
< count
; i
++)
488 array
[i
] = fdt32_to_cpu(cell
[i
]);
493 int fdtdec_get_int_array_count(const void *blob
, int node
,
494 const char *prop_name
, u32
*array
, int count
)
500 debug("%s: %s\n", __func__
, prop_name
);
501 cell
= fdt_getprop(blob
, node
, prop_name
, &len
);
503 return -FDT_ERR_NOTFOUND
;
504 elems
= len
/ sizeof(u32
);
507 for (i
= 0; i
< count
; i
++)
508 array
[i
] = fdt32_to_cpu(cell
[i
]);
513 const u32
*fdtdec_locate_array(const void *blob
, int node
,
514 const char *prop_name
, int count
)
519 cell
= get_prop_check_min_len(blob
, node
, prop_name
,
520 sizeof(u32
) * count
, &err
);
521 return err
? NULL
: cell
;
524 int fdtdec_get_bool(const void *blob
, int node
, const char *prop_name
)
529 debug("%s: %s\n", __func__
, prop_name
);
530 cell
= fdt_getprop(blob
, node
, prop_name
, &len
);
535 * Decode a list of GPIOs from an FDT. This creates a list of GPIOs with no
538 * @param blob FDT blob to use
539 * @param node Node to look at
540 * @param prop_name Node property name
541 * @param gpio Array of gpio elements to fill from FDT. This will be
542 * untouched if either 0 or an error is returned
543 * @param max_count Maximum number of elements allowed
544 * @return number of GPIOs read if ok, -FDT_ERR_BADLAYOUT if max_count would
545 * be exceeded, or -FDT_ERR_NOTFOUND if the property is missing.
547 int fdtdec_decode_gpios(const void *blob
, int node
, const char *prop_name
,
548 struct fdt_gpio_state
*gpio
, int max_count
)
550 const struct fdt_property
*prop
;
555 debug("%s: %s\n", __func__
, prop_name
);
556 assert(max_count
> 0);
557 prop
= fdt_get_property(blob
, node
, prop_name
, &len
);
559 debug("%s: property '%s' missing\n", __func__
, prop_name
);
560 return -FDT_ERR_NOTFOUND
;
563 /* We will use the name to tag the GPIO */
564 name
= fdt_string(blob
, fdt32_to_cpu(prop
->nameoff
));
565 cell
= (u32
*)prop
->data
;
566 len
/= sizeof(u32
) * 3; /* 3 cells per GPIO record */
567 if (len
> max_count
) {
568 debug(" %s: too many GPIOs / cells for "
569 "property '%s'\n", __func__
, prop_name
);
570 return -FDT_ERR_BADLAYOUT
;
573 /* Read out the GPIO data from the cells */
574 for (i
= 0; i
< len
; i
++, cell
+= 3) {
575 gpio
[i
].gpio
= fdt32_to_cpu(cell
[1]);
576 gpio
[i
].flags
= fdt32_to_cpu(cell
[2]);
583 int fdtdec_decode_gpio(const void *blob
, int node
, const char *prop_name
,
584 struct fdt_gpio_state
*gpio
)
588 debug("%s: %s\n", __func__
, prop_name
);
589 gpio
->gpio
= FDT_GPIO_NONE
;
591 err
= fdtdec_decode_gpios(blob
, node
, prop_name
, gpio
, 1);
592 return err
== 1 ? 0 : err
;
595 int fdtdec_get_gpio(struct fdt_gpio_state
*gpio
)
599 if (!fdt_gpio_isvalid(gpio
))
602 val
= gpio_get_value(gpio
->gpio
);
603 return gpio
->flags
& FDT_GPIO_ACTIVE_LOW
? val
^ 1 : val
;
606 int fdtdec_set_gpio(struct fdt_gpio_state
*gpio
, int val
)
608 if (!fdt_gpio_isvalid(gpio
))
611 val
= gpio
->flags
& FDT_GPIO_ACTIVE_LOW
? val
^ 1 : val
;
612 return gpio_set_value(gpio
->gpio
, val
);
615 int fdtdec_setup_gpio(struct fdt_gpio_state
*gpio
)
618 * Return success if there is no GPIO defined. This is used for
621 if (!fdt_gpio_isvalid(gpio
))
624 if (gpio_request(gpio
->gpio
, gpio
->name
))
629 int fdtdec_get_byte_array(const void *blob
, int node
, const char *prop_name
,
630 u8
*array
, int count
)
635 cell
= get_prop_check_min_len(blob
, node
, prop_name
, count
, &err
);
637 memcpy(array
, cell
, count
);
641 const u8
*fdtdec_locate_byte_array(const void *blob
, int node
,
642 const char *prop_name
, int count
)
647 cell
= get_prop_check_min_len(blob
, node
, prop_name
, count
, &err
);
653 int fdtdec_get_config_int(const void *blob
, const char *prop_name
,
658 debug("%s: %s\n", __func__
, prop_name
);
659 config_node
= fdt_path_offset(blob
, "/config");
662 return fdtdec_get_int(blob
, config_node
, prop_name
, default_val
);
665 int fdtdec_get_config_bool(const void *blob
, const char *prop_name
)
670 debug("%s: %s\n", __func__
, prop_name
);
671 config_node
= fdt_path_offset(blob
, "/config");
674 prop
= fdt_get_property(blob
, config_node
, prop_name
, NULL
);
679 char *fdtdec_get_config_string(const void *blob
, const char *prop_name
)
685 debug("%s: %s\n", __func__
, prop_name
);
686 nodeoffset
= fdt_path_offset(blob
, "/config");
690 nodep
= fdt_getprop(blob
, nodeoffset
, prop_name
, &len
);
694 return (char *)nodep
;
697 int fdtdec_decode_region(const void *blob
, int node
, const char *prop_name
,
698 fdt_addr_t
*basep
, fdt_size_t
*sizep
)
700 const fdt_addr_t
*cell
;
703 debug("%s: %s: %s\n", __func__
, fdt_get_name(blob
, node
, NULL
),
705 cell
= fdt_getprop(blob
, node
, prop_name
, &len
);
706 if (!cell
|| (len
< sizeof(fdt_addr_t
) * 2)) {
707 debug("cell=%p, len=%d\n", cell
, len
);
711 *basep
= fdt_addr_to_cpu(*cell
);
712 *sizep
= fdt_size_to_cpu(cell
[1]);
713 debug("%s: base=%08lx, size=%lx\n", __func__
, (ulong
)*basep
,
720 * Read a flash entry from the fdt
722 * @param blob FDT blob
723 * @param node Offset of node to read
724 * @param name Name of node being read
725 * @param entry Place to put offset and size of this node
726 * @return 0 if ok, -ve on error
728 int fdtdec_read_fmap_entry(const void *blob
, int node
, const char *name
,
729 struct fmap_entry
*entry
)
734 if (fdtdec_get_int_array(blob
, node
, "reg", reg
, 2)) {
735 debug("Node '%s' has bad/missing 'reg' property\n", name
);
736 return -FDT_ERR_NOTFOUND
;
738 entry
->offset
= reg
[0];
739 entry
->length
= reg
[1];
740 entry
->used
= fdtdec_get_int(blob
, node
, "used", entry
->length
);
741 prop
= fdt_getprop(blob
, node
, "compress", NULL
);
742 entry
->compress_algo
= prop
&& !strcmp(prop
, "lzo") ?
743 FMAP_COMPRESS_LZO
: FMAP_COMPRESS_NONE
;
744 prop
= fdt_getprop(blob
, node
, "hash", &entry
->hash_size
);
745 entry
->hash_algo
= prop
? FMAP_HASH_SHA256
: FMAP_HASH_NONE
;
746 entry
->hash
= (uint8_t *)prop
;
751 static u64
fdtdec_get_number(const fdt32_t
*ptr
, unsigned int cells
)
756 number
= (number
<< 32) | fdt32_to_cpu(*ptr
++);
761 int fdt_get_resource(const void *fdt
, int node
, const char *property
,
762 unsigned int index
, struct fdt_resource
*res
)
764 const fdt32_t
*ptr
, *end
;
765 int na
, ns
, len
, parent
;
768 parent
= fdt_parent_offset(fdt
, node
);
772 na
= fdt_address_cells(fdt
, parent
);
773 ns
= fdt_size_cells(fdt
, parent
);
775 ptr
= fdt_getprop(fdt
, node
, property
, &len
);
779 end
= ptr
+ len
/ sizeof(*ptr
);
781 while (ptr
+ na
+ ns
<= end
) {
783 res
->start
= res
->end
= fdtdec_get_number(ptr
, na
);
784 res
->end
+= fdtdec_get_number(&ptr
[na
], ns
) - 1;
792 return -FDT_ERR_NOTFOUND
;
795 int fdt_get_named_resource(const void *fdt
, int node
, const char *property
,
796 const char *prop_names
, const char *name
,
797 struct fdt_resource
*res
)
801 index
= fdt_find_string(fdt
, node
, prop_names
, name
);
805 return fdt_get_resource(fdt
, node
, property
, index
, res
);
808 int fdtdec_pci_get_bdf(const void *fdt
, int node
, int *bdf
)
813 prop
= fdt_getprop(fdt
, node
, "reg", &len
);
817 *bdf
= fdt32_to_cpu(*prop
) & 0xffffff;
822 int fdtdec_decode_memory_region(const void *blob
, int config_node
,
823 const char *mem_type
, const char *suffix
,
824 fdt_addr_t
*basep
, fdt_size_t
*sizep
)
828 fdt_size_t size
, offset_size
;
829 fdt_addr_t base
, offset
;
832 if (config_node
== -1) {
833 config_node
= fdt_path_offset(blob
, "/config");
834 if (config_node
< 0) {
835 debug("%s: Cannot find /config node\n", __func__
);
842 snprintf(prop_name
, sizeof(prop_name
), "%s-memory%s", mem_type
,
844 mem
= fdt_getprop(blob
, config_node
, prop_name
, NULL
);
846 debug("%s: No memory type for '%s', using /memory\n", __func__
,
851 node
= fdt_path_offset(blob
, mem
);
853 debug("%s: Failed to find node '%s': %s\n", __func__
, mem
,
859 * Not strictly correct - the memory may have multiple banks. We just
862 if (fdtdec_decode_region(blob
, node
, "reg", &base
, &size
)) {
863 debug("%s: Failed to decode memory region %s\n", __func__
,
868 snprintf(prop_name
, sizeof(prop_name
), "%s-offset%s", mem_type
,
870 if (fdtdec_decode_region(blob
, config_node
, prop_name
, &offset
,
872 debug("%s: Failed to decode memory region '%s'\n", __func__
,
877 *basep
= base
+ offset
;
878 *sizep
= offset_size
;