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Simon Glassb5220bc2011-10-24 19:15:32 +00001/*
2 * Copyright (c) 2011 The Chromium OS Authors.
Wolfgang Denk1a459662013-07-08 09:37:19 +02003 * SPDX-License-Identifier: GPL-2.0+
Simon Glassb5220bc2011-10-24 19:15:32 +00004 */
5
Heiko Schocher29a23f92014-03-03 12:19:30 +01006#ifndef USE_HOSTCC
Simon Glassb5220bc2011-10-24 19:15:32 +00007#include <common.h>
Simon Glassfcc0a872015-11-29 13:17:54 -07008#include <dm.h>
Simon Glass5c33c9f2014-07-23 06:55:09 -06009#include <errno.h>
Simon Glassb5220bc2011-10-24 19:15:32 +000010#include <serial.h>
11#include <libfdt.h>
12#include <fdtdec.h>
Simon Glassb45122f2015-02-27 22:06:34 -070013#include <asm/sections.h>
Simon Glass5c33c9f2014-07-23 06:55:09 -060014#include <linux/ctype.h>
Simon Glassb5220bc2011-10-24 19:15:32 +000015
16DECLARE_GLOBAL_DATA_PTR;
17
18/*
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.
Simon Glass01a227d2016-06-19 17:33:13 -060022 *
23 * NOTE: This list is basically a TODO list for things that need to be
24 * converted to driver model. So don't add new things here unless there is a
25 * good reason why driver-model conversion is infeasible. Examples include
26 * things which are used before driver model is available.
Simon Glassb5220bc2011-10-24 19:15:32 +000027 */
28#define COMPAT(id, name) name
29static const char * const compat_names[COMPAT_COUNT] = {
Simon Glassf88fe2d2012-02-27 10:52:34 +000030 COMPAT(UNKNOWN, "<none>"),
Jimmy Zhang0e35ad02012-04-02 13:18:52 +000031 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
32 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
Jim Lin312693c2012-07-29 20:53:29 +000033 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
Simon Glass00f37322015-04-14 21:03:40 -060034 COMPAT(NVIDIA_TEGRA124_PMC, "nvidia,tegra124-pmc"),
Stephen Warren39f63332016-05-12 12:11:23 -060035 COMPAT(NVIDIA_TEGRA186_SDMMC, "nvidia,tegra186-sdhci"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070036 COMPAT(NVIDIA_TEGRA210_SDMMC, "nvidia,tegra210-sdhci"),
Stephen Warrena73ca472014-01-24 12:46:06 -070037 COMPAT(NVIDIA_TEGRA124_SDMMC, "nvidia,tegra124-sdhci"),
Tom Warrenf4e4e0b2013-03-04 14:07:18 -070038 COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"),
Tom Warrenc9aa8312013-02-21 12:31:30 +000039 COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"),
Thierry Reding79c7a902014-12-09 22:25:09 -070040 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070041 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
Hatim RVcc9fe332012-12-11 00:52:46 +000042 COMPAT(SMSC_LAN9215, "smsc,lan9215"),
43 COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
Rajeshwari Shindec34253d2012-12-26 20:03:10 +000044 COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"),
Rajeshwari Shinde72dbff12012-12-26 20:03:16 +000045 COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"),
46 COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"),
Rajeshwari Shinde6abd1622013-01-07 23:35:05 +000047 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
Vivek Gautam108b85b2013-09-14 14:02:48 +053048 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
Akshay Saraswat618766c2013-02-25 01:13:01 +000049 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
Piotr Wilczekde461c52014-03-07 14:59:39 +010050 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
Jaehoon Chung7d3ca0f2014-05-16 13:59:51 +090051 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
Piotr Wilczek3577fe82014-03-07 14:59:41 +010052 COMPAT(SAMSUNG_EXYNOS_MMC, "samsung,exynos-mmc"),
Przemyslaw Marczakf37df0f2015-04-20 20:07:45 +020053 COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686"),
Simon Glassbb8215f2013-03-11 06:08:08 +000054 COMPAT(GENERIC_SPI_FLASH, "spi-flash"),
Rajeshwari Shinde7772bb72013-02-14 19:46:15 +000055 COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"),
naveen krishna chatradhiecbd7e12013-04-29 15:58:52 -070056 COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"),
Ajay Kumar45c480c2014-09-05 16:53:33 +053057 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
Simon Glass77f9b1f2014-11-12 22:42:21 -070058 COMPAT(INTEL_MICROCODE, "intel,microcode"),
Thierry Reding6173c452014-12-09 22:25:05 -070059 COMPAT(AMS_AS3722, "ams,as3722"),
Bin Mengc89ada02015-02-05 23:42:26 +080060 COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
Masahiro Yamada6462cde2015-03-11 15:54:46 +090061 COMPAT(SOCIONEXT_XHCI, "socionext,uniphier-xhci"),
Marek Vasut6ab00db2015-07-25 19:33:56 +020062 COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
Marek Vasut129adf52015-07-25 10:48:14 +020063 COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"),
Marek Vasutef4b01b2015-12-05 19:28:44 +010064 COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"),
Simon Glass39ea0ee2016-06-19 17:33:14 -060065 COMPAT(INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"),
66 COMPAT(INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"),
67 COMPAT(INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"),
Simon Glassb5220bc2011-10-24 19:15:32 +000068};
69
Simon Glassa53f4a22012-01-17 08:20:50 +000070const char *fdtdec_get_compatible(enum fdt_compat_id id)
71{
72 /* We allow reading of the 'unknown' ID for testing purposes */
73 assert(id >= 0 && id < COMPAT_COUNT);
74 return compat_names[id];
75}
76
Stephen Warren02464e32015-08-06 15:31:02 -060077fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
78 const char *prop_name, int index, int na, int ns,
79 fdt_size_t *sizep)
80{
81 const fdt32_t *prop, *prop_end;
82 const fdt32_t *prop_addr, *prop_size, *prop_after_size;
83 int len;
84 fdt_addr_t addr;
85
86 debug("%s: %s: ", __func__, prop_name);
87
88 if (na > (sizeof(fdt_addr_t) / sizeof(fdt32_t))) {
89 debug("(na too large for fdt_addr_t type)\n");
90 return FDT_ADDR_T_NONE;
91 }
92
93 if (ns > (sizeof(fdt_size_t) / sizeof(fdt32_t))) {
94 debug("(ns too large for fdt_size_t type)\n");
95 return FDT_ADDR_T_NONE;
96 }
97
98 prop = fdt_getprop(blob, node, prop_name, &len);
99 if (!prop) {
100 debug("(not found)\n");
101 return FDT_ADDR_T_NONE;
102 }
103 prop_end = prop + (len / sizeof(*prop));
104
105 prop_addr = prop + (index * (na + ns));
106 prop_size = prop_addr + na;
107 prop_after_size = prop_size + ns;
108 if (prop_after_size > prop_end) {
109 debug("(not enough data: expected >= %d cells, got %d cells)\n",
110 (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
111 return FDT_ADDR_T_NONE;
112 }
113
114 addr = fdtdec_get_number(prop_addr, na);
115
116 if (sizep) {
117 *sizep = fdtdec_get_number(prop_size, ns);
Simon Glassfd30d2c2016-02-29 15:25:37 -0700118 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
119 (unsigned long long)*sizep);
Stephen Warren02464e32015-08-06 15:31:02 -0600120 } else {
Simon Glassfd30d2c2016-02-29 15:25:37 -0700121 debug("addr=%08llx\n", (unsigned long long)addr);
Stephen Warren02464e32015-08-06 15:31:02 -0600122 }
123
124 return addr;
125}
126
127fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
128 int node, const char *prop_name, int index, fdt_size_t *sizep)
129{
130 int na, ns;
131
132 debug("%s: ", __func__);
133
134 na = fdt_address_cells(blob, parent);
135 if (na < 1) {
136 debug("(bad #address-cells)\n");
137 return FDT_ADDR_T_NONE;
138 }
139
140 ns = fdt_size_cells(blob, parent);
Przemyslaw Marczakff0a6352015-09-30 13:14:50 +0200141 if (ns < 0) {
Stephen Warren02464e32015-08-06 15:31:02 -0600142 debug("(bad #size-cells)\n");
143 return FDT_ADDR_T_NONE;
144 }
145
146 debug("na=%d, ns=%d, ", na, ns);
147
148 return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
149 ns, sizep);
150}
151
152fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
153 const char *prop_name, int index, fdt_size_t *sizep)
154{
155 int parent;
156
157 debug("%s: ", __func__);
158
159 parent = fdt_parent_offset(blob, node);
160 if (parent < 0) {
161 debug("(no parent found)\n");
162 return FDT_ADDR_T_NONE;
163 }
164
165 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
166 index, sizep);
167}
168
Simon Glass4397a2a2013-03-19 04:58:51 +0000169fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
170 const char *prop_name, fdt_size_t *sizep)
Simon Glassb5220bc2011-10-24 19:15:32 +0000171{
Stephen Warrend93b9a02015-09-25 10:11:41 -0600172 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
173
Stephen Warren02464e32015-08-06 15:31:02 -0600174 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
175 sizeof(fdt_addr_t) / sizeof(fdt32_t),
Stephen Warrend93b9a02015-09-25 10:11:41 -0600176 ns, sizep);
Simon Glassb5220bc2011-10-24 19:15:32 +0000177}
178
Simon Glass4397a2a2013-03-19 04:58:51 +0000179fdt_addr_t fdtdec_get_addr(const void *blob, int node,
180 const char *prop_name)
181{
182 return fdtdec_get_addr_size(blob, node, prop_name, NULL);
183}
184
Simon Glassfcc0a872015-11-29 13:17:54 -0700185#if defined(CONFIG_PCI) && defined(CONFIG_DM_PCI)
Bin Menga62e84d2014-12-31 16:05:11 +0800186int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type,
187 const char *prop_name, struct fdt_pci_addr *addr)
188{
189 const u32 *cell;
190 int len;
191 int ret = -ENOENT;
192
193 debug("%s: %s: ", __func__, prop_name);
194
195 /*
196 * If we follow the pci bus bindings strictly, we should check
197 * the value of the node's parent node's #address-cells and
198 * #size-cells. They need to be 3 and 2 accordingly. However,
199 * for simplicity we skip the check here.
200 */
201 cell = fdt_getprop(blob, node, prop_name, &len);
202 if (!cell)
203 goto fail;
204
205 if ((len % FDT_PCI_REG_SIZE) == 0) {
206 int num = len / FDT_PCI_REG_SIZE;
207 int i;
208
209 for (i = 0; i < num; i++) {
210 debug("pci address #%d: %08lx %08lx %08lx\n", i,
Stephen Warren4ea52432015-10-02 17:44:06 -0600211 (ulong)fdt32_to_cpu(cell[0]),
212 (ulong)fdt32_to_cpu(cell[1]),
213 (ulong)fdt32_to_cpu(cell[2]));
214 if ((fdt32_to_cpu(*cell) & type) == type) {
215 addr->phys_hi = fdt32_to_cpu(cell[0]);
216 addr->phys_mid = fdt32_to_cpu(cell[1]);
217 addr->phys_lo = fdt32_to_cpu(cell[1]);
Bin Menga62e84d2014-12-31 16:05:11 +0800218 break;
219 } else {
220 cell += (FDT_PCI_ADDR_CELLS +
221 FDT_PCI_SIZE_CELLS);
222 }
223 }
224
Simon Glass106cce92015-03-05 12:25:19 -0700225 if (i == num) {
226 ret = -ENXIO;
Bin Menga62e84d2014-12-31 16:05:11 +0800227 goto fail;
Simon Glass106cce92015-03-05 12:25:19 -0700228 }
Bin Menga62e84d2014-12-31 16:05:11 +0800229
230 return 0;
231 } else {
232 ret = -EINVAL;
233 }
234
235fail:
236 debug("(not found)\n");
237 return ret;
238}
239
240int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
241{
242 const char *list, *end;
243 int len;
244
245 list = fdt_getprop(blob, node, "compatible", &len);
246 if (!list)
247 return -ENOENT;
248
249 end = list + len;
250 while (list < end) {
251 char *s;
252
253 len = strlen(list);
254 if (len >= strlen("pciVVVV,DDDD")) {
255 s = strstr(list, "pci");
256
257 /*
258 * check if the string is something like pciVVVV,DDDD.RR
259 * or just pciVVVV,DDDD
260 */
261 if (s && s[7] == ',' &&
262 (s[12] == '.' || s[12] == 0)) {
263 s += 3;
264 *vendor = simple_strtol(s, NULL, 16);
265
266 s += 5;
267 *device = simple_strtol(s, NULL, 16);
268
269 return 0;
270 }
Bin Menga62e84d2014-12-31 16:05:11 +0800271 }
Bin Mengbc6351e2015-08-20 06:40:25 -0700272 list += (len + 1);
Bin Menga62e84d2014-12-31 16:05:11 +0800273 }
274
275 return -ENOENT;
276}
277
Simon Glassfcc0a872015-11-29 13:17:54 -0700278int fdtdec_get_pci_bar32(struct udevice *dev, struct fdt_pci_addr *addr,
279 u32 *bar)
Bin Menga62e84d2014-12-31 16:05:11 +0800280{
Bin Menga62e84d2014-12-31 16:05:11 +0800281 int barnum;
Bin Menga62e84d2014-12-31 16:05:11 +0800282
283 /* extract the bar number from fdt_pci_addr */
284 barnum = addr->phys_hi & 0xff;
285 if ((barnum < PCI_BASE_ADDRESS_0) || (barnum > PCI_CARDBUS_CIS))
286 return -EINVAL;
287
288 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
Simon Glassfcc0a872015-11-29 13:17:54 -0700289 *bar = dm_pci_read_bar32(dev, barnum);
Bin Menga62e84d2014-12-31 16:05:11 +0800290
291 return 0;
292}
293#endif
294
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000295uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
296 uint64_t default_val)
297{
298 const uint64_t *cell64;
299 int length;
300
301 cell64 = fdt_getprop(blob, node, prop_name, &length);
302 if (!cell64 || length < sizeof(*cell64))
303 return default_val;
304
305 return fdt64_to_cpu(*cell64);
306}
307
Simon Glassf88fe2d2012-02-27 10:52:34 +0000308int fdtdec_get_is_enabled(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000309{
310 const char *cell;
311
Simon Glassf88fe2d2012-02-27 10:52:34 +0000312 /*
313 * It should say "okay", so only allow that. Some fdts use "ok" but
314 * this is a bug. Please fix your device tree source file. See here
315 * for discussion:
316 *
317 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
318 */
Simon Glassb5220bc2011-10-24 19:15:32 +0000319 cell = fdt_getprop(blob, node, "status", NULL);
320 if (cell)
Simon Glassf88fe2d2012-02-27 10:52:34 +0000321 return 0 == strcmp(cell, "okay");
322 return 1;
Simon Glassb5220bc2011-10-24 19:15:32 +0000323}
324
Gerald Van Baren7cde3972012-11-12 23:13:54 -0500325enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000326{
327 enum fdt_compat_id id;
328
329 /* Search our drivers */
330 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
331 if (0 == fdt_node_check_compatible(blob, node,
332 compat_names[id]))
333 return id;
334 return COMPAT_UNKNOWN;
335}
336
337int fdtdec_next_compatible(const void *blob, int node,
338 enum fdt_compat_id id)
339{
340 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
341}
342
Simon Glass3ddecfc2012-04-02 13:18:42 +0000343int fdtdec_next_compatible_subnode(const void *blob, int node,
344 enum fdt_compat_id id, int *depthp)
345{
346 do {
347 node = fdt_next_node(blob, node, depthp);
348 } while (*depthp > 1);
349
350 /* If this is a direct subnode, and compatible, return it */
351 if (*depthp == 1 && 0 == fdt_node_check_compatible(
352 blob, node, compat_names[id]))
353 return node;
354
355 return -FDT_ERR_NOTFOUND;
356}
357
Simon Glassb5220bc2011-10-24 19:15:32 +0000358int fdtdec_next_alias(const void *blob, const char *name,
359 enum fdt_compat_id id, int *upto)
360{
361#define MAX_STR_LEN 20
362 char str[MAX_STR_LEN + 20];
363 int node, err;
364
365 /* snprintf() is not available */
366 assert(strlen(name) < MAX_STR_LEN);
367 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
Simon Glass00878472012-10-31 14:02:42 +0000368 node = fdt_path_offset(blob, str);
Simon Glassb5220bc2011-10-24 19:15:32 +0000369 if (node < 0)
370 return node;
371 err = fdt_node_check_compatible(blob, node, compat_names[id]);
372 if (err < 0)
373 return err;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000374 if (err)
375 return -FDT_ERR_NOTFOUND;
376 (*upto)++;
377 return node;
Simon Glassb5220bc2011-10-24 19:15:32 +0000378}
379
Simon Glassa53f4a22012-01-17 08:20:50 +0000380int fdtdec_find_aliases_for_id(const void *blob, const char *name,
381 enum fdt_compat_id id, int *node_list, int maxcount)
382{
Simon Glassc6782272012-02-03 15:13:53 +0000383 memset(node_list, '\0', sizeof(*node_list) * maxcount);
384
385 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
386}
387
388/* TODO: Can we tighten this code up a little? */
389int fdtdec_add_aliases_for_id(const void *blob, const char *name,
390 enum fdt_compat_id id, int *node_list, int maxcount)
391{
Simon Glassa53f4a22012-01-17 08:20:50 +0000392 int name_len = strlen(name);
393 int nodes[maxcount];
394 int num_found = 0;
395 int offset, node;
396 int alias_node;
397 int count;
398 int i, j;
399
400 /* find the alias node if present */
401 alias_node = fdt_path_offset(blob, "/aliases");
402
403 /*
404 * start with nothing, and we can assume that the root node can't
405 * match
406 */
407 memset(nodes, '\0', sizeof(nodes));
408
409 /* First find all the compatible nodes */
410 for (node = count = 0; node >= 0 && count < maxcount;) {
411 node = fdtdec_next_compatible(blob, node, id);
412 if (node >= 0)
413 nodes[count++] = node;
414 }
415 if (node >= 0)
416 debug("%s: warning: maxcount exceeded with alias '%s'\n",
417 __func__, name);
418
419 /* Now find all the aliases */
Simon Glassa53f4a22012-01-17 08:20:50 +0000420 for (offset = fdt_first_property_offset(blob, alias_node);
421 offset > 0;
422 offset = fdt_next_property_offset(blob, offset)) {
423 const struct fdt_property *prop;
424 const char *path;
425 int number;
426 int found;
427
428 node = 0;
429 prop = fdt_get_property_by_offset(blob, offset, NULL);
430 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
431 if (prop->len && 0 == strncmp(path, name, name_len))
432 node = fdt_path_offset(blob, prop->data);
433 if (node <= 0)
434 continue;
435
436 /* Get the alias number */
437 number = simple_strtoul(path + name_len, NULL, 10);
438 if (number < 0 || number >= maxcount) {
439 debug("%s: warning: alias '%s' is out of range\n",
440 __func__, path);
441 continue;
442 }
443
444 /* Make sure the node we found is actually in our list! */
445 found = -1;
446 for (j = 0; j < count; j++)
447 if (nodes[j] == node) {
448 found = j;
449 break;
450 }
451
452 if (found == -1) {
453 debug("%s: warning: alias '%s' points to a node "
454 "'%s' that is missing or is not compatible "
455 " with '%s'\n", __func__, path,
456 fdt_get_name(blob, node, NULL),
457 compat_names[id]);
458 continue;
459 }
460
461 /*
462 * Add this node to our list in the right place, and mark
463 * it as done.
464 */
465 if (fdtdec_get_is_enabled(blob, node)) {
Simon Glassc6782272012-02-03 15:13:53 +0000466 if (node_list[number]) {
467 debug("%s: warning: alias '%s' requires that "
468 "a node be placed in the list in a "
469 "position which is already filled by "
470 "node '%s'\n", __func__, path,
471 fdt_get_name(blob, node, NULL));
472 continue;
473 }
Simon Glassa53f4a22012-01-17 08:20:50 +0000474 node_list[number] = node;
475 if (number >= num_found)
476 num_found = number + 1;
477 }
Simon Glassc6782272012-02-03 15:13:53 +0000478 nodes[found] = 0;
Simon Glassa53f4a22012-01-17 08:20:50 +0000479 }
480
481 /* Add any nodes not mentioned by an alias */
482 for (i = j = 0; i < maxcount; i++) {
483 if (!node_list[i]) {
484 for (; j < maxcount; j++)
485 if (nodes[j] &&
486 fdtdec_get_is_enabled(blob, nodes[j]))
487 break;
488
489 /* Have we run out of nodes to add? */
490 if (j == maxcount)
491 break;
492
493 assert(!node_list[i]);
494 node_list[i] = nodes[j++];
495 if (i >= num_found)
496 num_found = i + 1;
497 }
498 }
499
500 return num_found;
501}
502
Simon Glass5c33c9f2014-07-23 06:55:09 -0600503int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
504 int *seqp)
505{
506 int base_len = strlen(base);
507 const char *find_name;
508 int find_namelen;
509 int prop_offset;
510 int aliases;
511
512 find_name = fdt_get_name(blob, offset, &find_namelen);
513 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
514
515 aliases = fdt_path_offset(blob, "/aliases");
516 for (prop_offset = fdt_first_property_offset(blob, aliases);
517 prop_offset > 0;
518 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
519 const char *prop;
520 const char *name;
521 const char *slash;
Simon Glassc4af6732015-06-23 15:39:08 -0600522 int len, val;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600523
524 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
525 debug(" - %s, %s\n", name, prop);
526 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
527 strncmp(name, base, base_len))
528 continue;
529
530 slash = strrchr(prop, '/');
531 if (strcmp(slash + 1, find_name))
532 continue;
Simon Glassc4af6732015-06-23 15:39:08 -0600533 val = trailing_strtol(name);
534 if (val != -1) {
535 *seqp = val;
536 debug("Found seq %d\n", *seqp);
537 return 0;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600538 }
539 }
540
541 debug("Not found\n");
542 return -ENOENT;
543}
544
Simon Glass3bc37a52015-10-17 19:41:14 -0600545const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
546{
547 int chosen_node;
548
549 if (!blob)
550 return NULL;
551 chosen_node = fdt_path_offset(blob, "/chosen");
552 return fdt_getprop(blob, chosen_node, name, NULL);
553}
554
Simon Glassaac07d42014-09-04 16:27:24 -0600555int fdtdec_get_chosen_node(const void *blob, const char *name)
556{
557 const char *prop;
Simon Glassaac07d42014-09-04 16:27:24 -0600558
Simon Glass3bc37a52015-10-17 19:41:14 -0600559 prop = fdtdec_get_chosen_prop(blob, name);
Simon Glassaac07d42014-09-04 16:27:24 -0600560 if (!prop)
561 return -FDT_ERR_NOTFOUND;
562 return fdt_path_offset(blob, prop);
563}
564
Simon Glass9a263e52012-03-28 10:08:24 +0000565int fdtdec_check_fdt(void)
566{
567 /*
568 * We must have an FDT, but we cannot panic() yet since the console
569 * is not ready. So for now, just assert(). Boards which need an early
570 * FDT (prior to console ready) will need to make their own
571 * arrangements and do their own checks.
572 */
573 assert(!fdtdec_prepare_fdt());
574 return 0;
575}
576
Simon Glassb5220bc2011-10-24 19:15:32 +0000577/*
578 * This function is a little odd in that it accesses global data. At some
579 * point if the architecture board.c files merge this will make more sense.
580 * Even now, it is common code.
581 */
Simon Glass9a263e52012-03-28 10:08:24 +0000582int fdtdec_prepare_fdt(void)
Simon Glassb5220bc2011-10-24 19:15:32 +0000583{
Simon Glassc309c2d2013-04-20 08:42:46 +0000584 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
585 fdt_check_header(gd->fdt_blob)) {
Simon Glass66312372015-02-27 22:06:32 -0700586#ifdef CONFIG_SPL_BUILD
587 puts("Missing DTB\n");
588#else
589 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");
Simon Glasscb5f97f702015-06-23 15:39:09 -0600590# ifdef DEBUG
591 if (gd->fdt_blob) {
592 printf("fdt_blob=%p\n", gd->fdt_blob);
593 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
594 32, 0);
595 }
596# endif
Simon Glass66312372015-02-27 22:06:32 -0700597#endif
Simon Glass9a263e52012-03-28 10:08:24 +0000598 return -1;
599 }
Simon Glassb5220bc2011-10-24 19:15:32 +0000600 return 0;
601}
Simon Glassd17da652012-02-27 10:52:35 +0000602
603int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
604{
605 const u32 *phandle;
606 int lookup;
607
Simon Glass1cb23232012-07-12 05:25:01 +0000608 debug("%s: %s\n", __func__, prop_name);
Simon Glassd17da652012-02-27 10:52:35 +0000609 phandle = fdt_getprop(blob, node, prop_name, NULL);
610 if (!phandle)
611 return -FDT_ERR_NOTFOUND;
612
613 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
614 return lookup;
615}
616
617/**
618 * Look up a property in a node and check that it has a minimum length.
619 *
620 * @param blob FDT blob
621 * @param node node to examine
622 * @param prop_name name of property to find
623 * @param min_len minimum property length in bytes
624 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
625 found, or -FDT_ERR_BADLAYOUT if not enough data
626 * @return pointer to cell, which is only valid if err == 0
627 */
628static const void *get_prop_check_min_len(const void *blob, int node,
629 const char *prop_name, int min_len, int *err)
630{
631 const void *cell;
632 int len;
633
634 debug("%s: %s\n", __func__, prop_name);
635 cell = fdt_getprop(blob, node, prop_name, &len);
636 if (!cell)
637 *err = -FDT_ERR_NOTFOUND;
638 else if (len < min_len)
639 *err = -FDT_ERR_BADLAYOUT;
640 else
641 *err = 0;
642 return cell;
643}
644
645int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
646 u32 *array, int count)
647{
648 const u32 *cell;
649 int i, err = 0;
650
651 debug("%s: %s\n", __func__, prop_name);
652 cell = get_prop_check_min_len(blob, node, prop_name,
653 sizeof(u32) * count, &err);
654 if (!err) {
655 for (i = 0; i < count; i++)
656 array[i] = fdt32_to_cpu(cell[i]);
657 }
658 return err;
659}
660
Simon Glassa9f04d42014-11-10 18:00:19 -0700661int fdtdec_get_int_array_count(const void *blob, int node,
662 const char *prop_name, u32 *array, int count)
663{
664 const u32 *cell;
665 int len, elems;
666 int i;
667
668 debug("%s: %s\n", __func__, prop_name);
669 cell = fdt_getprop(blob, node, prop_name, &len);
670 if (!cell)
671 return -FDT_ERR_NOTFOUND;
672 elems = len / sizeof(u32);
673 if (count > elems)
674 count = elems;
675 for (i = 0; i < count; i++)
676 array[i] = fdt32_to_cpu(cell[i]);
677
678 return count;
679}
680
Simon Glass96875e72012-04-02 13:18:41 +0000681const u32 *fdtdec_locate_array(const void *blob, int node,
682 const char *prop_name, int count)
683{
684 const u32 *cell;
685 int err;
686
687 cell = get_prop_check_min_len(blob, node, prop_name,
688 sizeof(u32) * count, &err);
689 return err ? NULL : cell;
690}
691
Simon Glassd17da652012-02-27 10:52:35 +0000692int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
693{
694 const s32 *cell;
695 int len;
696
697 debug("%s: %s\n", __func__, prop_name);
698 cell = fdt_getprop(blob, node, prop_name, &len);
699 return cell != NULL;
700}
Simon Glassed3ee5c2012-02-27 10:52:36 +0000701
Simon Glass57068a72015-01-05 20:05:26 -0700702int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
703 const char *list_name,
704 const char *cells_name,
705 int cell_count, int index,
706 struct fdtdec_phandle_args *out_args)
707{
708 const __be32 *list, *list_end;
709 int rc = 0, size, cur_index = 0;
710 uint32_t count = 0;
711 int node = -1;
712 int phandle;
713
714 /* Retrieve the phandle list property */
715 list = fdt_getprop(blob, src_node, list_name, &size);
716 if (!list)
717 return -ENOENT;
718 list_end = list + size / sizeof(*list);
719
720 /* Loop over the phandles until all the requested entry is found */
721 while (list < list_end) {
722 rc = -EINVAL;
723 count = 0;
724
725 /*
726 * If phandle is 0, then it is an empty entry with no
727 * arguments. Skip forward to the next entry.
728 */
729 phandle = be32_to_cpup(list++);
730 if (phandle) {
731 /*
732 * Find the provider node and parse the #*-cells
733 * property to determine the argument length.
734 *
735 * This is not needed if the cell count is hard-coded
736 * (i.e. cells_name not set, but cell_count is set),
737 * except when we're going to return the found node
738 * below.
739 */
740 if (cells_name || cur_index == index) {
741 node = fdt_node_offset_by_phandle(blob,
742 phandle);
743 if (!node) {
744 debug("%s: could not find phandle\n",
745 fdt_get_name(blob, src_node,
746 NULL));
747 goto err;
748 }
749 }
750
751 if (cells_name) {
752 count = fdtdec_get_int(blob, node, cells_name,
753 -1);
754 if (count == -1) {
755 debug("%s: could not get %s for %s\n",
756 fdt_get_name(blob, src_node,
757 NULL),
758 cells_name,
759 fdt_get_name(blob, node,
760 NULL));
761 goto err;
762 }
763 } else {
764 count = cell_count;
765 }
766
767 /*
768 * Make sure that the arguments actually fit in the
769 * remaining property data length
770 */
771 if (list + count > list_end) {
772 debug("%s: arguments longer than property\n",
773 fdt_get_name(blob, src_node, NULL));
774 goto err;
775 }
776 }
777
778 /*
779 * All of the error cases above bail out of the loop, so at
780 * this point, the parsing is successful. If the requested
781 * index matches, then fill the out_args structure and return,
782 * or return -ENOENT for an empty entry.
783 */
784 rc = -ENOENT;
785 if (cur_index == index) {
786 if (!phandle)
787 goto err;
788
789 if (out_args) {
790 int i;
791
792 if (count > MAX_PHANDLE_ARGS) {
793 debug("%s: too many arguments %d\n",
794 fdt_get_name(blob, src_node,
795 NULL), count);
796 count = MAX_PHANDLE_ARGS;
797 }
798 out_args->node = node;
799 out_args->args_count = count;
800 for (i = 0; i < count; i++) {
801 out_args->args[i] =
802 be32_to_cpup(list++);
803 }
804 }
805
806 /* Found it! return success */
807 return 0;
808 }
809
810 node = -1;
811 list += count;
812 cur_index++;
813 }
814
815 /*
816 * Result will be one of:
817 * -ENOENT : index is for empty phandle
818 * -EINVAL : parsing error on data
819 * [1..n] : Number of phandle (count mode; when index = -1)
820 */
821 rc = index < 0 ? cur_index : -ENOENT;
822 err:
823 return rc;
824}
825
Peng Fan1889a7e2016-02-01 13:31:15 +0800826int fdtdec_get_child_count(const void *blob, int node)
827{
828 int subnode;
829 int num = 0;
830
831 fdt_for_each_subnode(blob, subnode, node)
832 num++;
833
834 return num;
835}
836
Anton Staffbed4d892012-04-17 09:01:28 +0000837int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
838 u8 *array, int count)
839{
840 const u8 *cell;
841 int err;
842
843 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
844 if (!err)
845 memcpy(array, cell, count);
846 return err;
847}
848
849const u8 *fdtdec_locate_byte_array(const void *blob, int node,
850 const char *prop_name, int count)
851{
852 const u8 *cell;
853 int err;
854
855 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
856 if (err)
857 return NULL;
858 return cell;
859}
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000860
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000861int fdtdec_get_config_int(const void *blob, const char *prop_name,
862 int default_val)
863{
864 int config_node;
865
866 debug("%s: %s\n", __func__, prop_name);
867 config_node = fdt_path_offset(blob, "/config");
868 if (config_node < 0)
869 return default_val;
870 return fdtdec_get_int(blob, config_node, prop_name, default_val);
871}
Simon Glass332ab0d2012-10-25 16:30:59 +0000872
Gabe Black79289c02012-10-25 16:31:04 +0000873int fdtdec_get_config_bool(const void *blob, const char *prop_name)
874{
875 int config_node;
876 const void *prop;
877
878 debug("%s: %s\n", __func__, prop_name);
879 config_node = fdt_path_offset(blob, "/config");
880 if (config_node < 0)
881 return 0;
882 prop = fdt_get_property(blob, config_node, prop_name, NULL);
883
884 return prop != NULL;
885}
886
Simon Glass332ab0d2012-10-25 16:30:59 +0000887char *fdtdec_get_config_string(const void *blob, const char *prop_name)
888{
889 const char *nodep;
890 int nodeoffset;
891 int len;
892
893 debug("%s: %s\n", __func__, prop_name);
894 nodeoffset = fdt_path_offset(blob, "/config");
895 if (nodeoffset < 0)
896 return NULL;
897
898 nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
899 if (!nodep)
900 return NULL;
901
902 return (char *)nodep;
903}
Simon Glassf20c4612012-10-25 16:31:00 +0000904
Simon Glass76489832014-10-23 18:58:51 -0600905int fdtdec_decode_region(const void *blob, int node, const char *prop_name,
906 fdt_addr_t *basep, fdt_size_t *sizep)
Simon Glassf20c4612012-10-25 16:31:00 +0000907{
908 const fdt_addr_t *cell;
909 int len;
910
Simon Glass76489832014-10-23 18:58:51 -0600911 debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL),
912 prop_name);
Simon Glassf20c4612012-10-25 16:31:00 +0000913 cell = fdt_getprop(blob, node, prop_name, &len);
Simon Glass76489832014-10-23 18:58:51 -0600914 if (!cell || (len < sizeof(fdt_addr_t) * 2)) {
915 debug("cell=%p, len=%d\n", cell, len);
Simon Glassf20c4612012-10-25 16:31:00 +0000916 return -1;
Simon Glass76489832014-10-23 18:58:51 -0600917 }
Simon Glassf20c4612012-10-25 16:31:00 +0000918
Simon Glass76489832014-10-23 18:58:51 -0600919 *basep = fdt_addr_to_cpu(*cell);
920 *sizep = fdt_size_to_cpu(cell[1]);
921 debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep,
922 (ulong)*sizep);
923
Simon Glassf20c4612012-10-25 16:31:00 +0000924 return 0;
925}
Simon Glass006e73b2014-02-27 13:26:01 -0700926
927/**
928 * Read a flash entry from the fdt
929 *
930 * @param blob FDT blob
931 * @param node Offset of node to read
932 * @param name Name of node being read
933 * @param entry Place to put offset and size of this node
934 * @return 0 if ok, -ve on error
935 */
936int fdtdec_read_fmap_entry(const void *blob, int node, const char *name,
937 struct fmap_entry *entry)
938{
Simon Glassf3cc44f2014-10-23 18:58:52 -0600939 const char *prop;
Simon Glass006e73b2014-02-27 13:26:01 -0700940 u32 reg[2];
941
942 if (fdtdec_get_int_array(blob, node, "reg", reg, 2)) {
943 debug("Node '%s' has bad/missing 'reg' property\n", name);
944 return -FDT_ERR_NOTFOUND;
945 }
946 entry->offset = reg[0];
947 entry->length = reg[1];
Simon Glassf3cc44f2014-10-23 18:58:52 -0600948 entry->used = fdtdec_get_int(blob, node, "used", entry->length);
949 prop = fdt_getprop(blob, node, "compress", NULL);
950 entry->compress_algo = prop && !strcmp(prop, "lzo") ?
951 FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE;
952 prop = fdt_getprop(blob, node, "hash", &entry->hash_size);
953 entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE;
954 entry->hash = (uint8_t *)prop;
Simon Glass006e73b2014-02-27 13:26:01 -0700955
956 return 0;
957}
Thierry Reding56f42242014-08-26 17:33:53 +0200958
Simon Glass5f7bfdd2015-03-05 12:25:14 -0700959u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
Thierry Reding56f42242014-08-26 17:33:53 +0200960{
961 u64 number = 0;
962
963 while (cells--)
964 number = (number << 32) | fdt32_to_cpu(*ptr++);
965
966 return number;
967}
968
969int fdt_get_resource(const void *fdt, int node, const char *property,
970 unsigned int index, struct fdt_resource *res)
971{
972 const fdt32_t *ptr, *end;
973 int na, ns, len, parent;
974 unsigned int i = 0;
975
976 parent = fdt_parent_offset(fdt, node);
977 if (parent < 0)
978 return parent;
979
980 na = fdt_address_cells(fdt, parent);
981 ns = fdt_size_cells(fdt, parent);
982
983 ptr = fdt_getprop(fdt, node, property, &len);
984 if (!ptr)
985 return len;
986
987 end = ptr + len / sizeof(*ptr);
988
989 while (ptr + na + ns <= end) {
990 if (i == index) {
991 res->start = res->end = fdtdec_get_number(ptr, na);
992 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
993 return 0;
994 }
995
996 ptr += na + ns;
997 i++;
998 }
999
1000 return -FDT_ERR_NOTFOUND;
1001}
1002
1003int fdt_get_named_resource(const void *fdt, int node, const char *property,
1004 const char *prop_names, const char *name,
1005 struct fdt_resource *res)
1006{
1007 int index;
1008
1009 index = fdt_find_string(fdt, node, prop_names, name);
1010 if (index < 0)
1011 return index;
1012
1013 return fdt_get_resource(fdt, node, property, index, res);
1014}
Thierry Reding9f85eee2014-08-26 17:33:54 +02001015
Simon Glass26403872014-10-23 18:58:56 -06001016int fdtdec_decode_memory_region(const void *blob, int config_node,
1017 const char *mem_type, const char *suffix,
1018 fdt_addr_t *basep, fdt_size_t *sizep)
1019{
1020 char prop_name[50];
1021 const char *mem;
1022 fdt_size_t size, offset_size;
1023 fdt_addr_t base, offset;
1024 int node;
1025
1026 if (config_node == -1) {
1027 config_node = fdt_path_offset(blob, "/config");
1028 if (config_node < 0) {
1029 debug("%s: Cannot find /config node\n", __func__);
1030 return -ENOENT;
1031 }
1032 }
1033 if (!suffix)
1034 suffix = "";
1035
1036 snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type,
1037 suffix);
1038 mem = fdt_getprop(blob, config_node, prop_name, NULL);
1039 if (!mem) {
1040 debug("%s: No memory type for '%s', using /memory\n", __func__,
1041 prop_name);
1042 mem = "/memory";
1043 }
1044
1045 node = fdt_path_offset(blob, mem);
1046 if (node < 0) {
1047 debug("%s: Failed to find node '%s': %s\n", __func__, mem,
1048 fdt_strerror(node));
1049 return -ENOENT;
1050 }
1051
1052 /*
1053 * Not strictly correct - the memory may have multiple banks. We just
1054 * use the first
1055 */
1056 if (fdtdec_decode_region(blob, node, "reg", &base, &size)) {
1057 debug("%s: Failed to decode memory region %s\n", __func__,
1058 mem);
1059 return -EINVAL;
1060 }
1061
1062 snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type,
1063 suffix);
1064 if (fdtdec_decode_region(blob, config_node, prop_name, &offset,
1065 &offset_size)) {
1066 debug("%s: Failed to decode memory region '%s'\n", __func__,
1067 prop_name);
1068 return -EINVAL;
1069 }
1070
1071 *basep = base + offset;
1072 *sizep = offset_size;
1073
1074 return 0;
1075}
Simon Glassb45122f2015-02-27 22:06:34 -07001076
Simon Glass12e67112015-04-14 21:03:21 -06001077static int decode_timing_property(const void *blob, int node, const char *name,
1078 struct timing_entry *result)
1079{
1080 int length, ret = 0;
1081 const u32 *prop;
1082
1083 prop = fdt_getprop(blob, node, name, &length);
1084 if (!prop) {
1085 debug("%s: could not find property %s\n",
1086 fdt_get_name(blob, node, NULL), name);
1087 return length;
1088 }
1089
1090 if (length == sizeof(u32)) {
1091 result->typ = fdtdec_get_int(blob, node, name, 0);
1092 result->min = result->typ;
1093 result->max = result->typ;
1094 } else {
1095 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
1096 }
1097
1098 return ret;
1099}
1100
1101int fdtdec_decode_display_timing(const void *blob, int parent, int index,
1102 struct display_timing *dt)
1103{
1104 int i, node, timings_node;
1105 u32 val = 0;
1106 int ret = 0;
1107
1108 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
1109 if (timings_node < 0)
1110 return timings_node;
1111
1112 for (i = 0, node = fdt_first_subnode(blob, timings_node);
1113 node > 0 && i != index;
1114 node = fdt_next_subnode(blob, node))
1115 i++;
1116
1117 if (node < 0)
1118 return node;
1119
1120 memset(dt, 0, sizeof(*dt));
1121
1122 ret |= decode_timing_property(blob, node, "hback-porch",
1123 &dt->hback_porch);
1124 ret |= decode_timing_property(blob, node, "hfront-porch",
1125 &dt->hfront_porch);
1126 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
1127 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
1128 ret |= decode_timing_property(blob, node, "vback-porch",
1129 &dt->vback_porch);
1130 ret |= decode_timing_property(blob, node, "vfront-porch",
1131 &dt->vfront_porch);
1132 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
1133 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
1134 ret |= decode_timing_property(blob, node, "clock-frequency",
1135 &dt->pixelclock);
1136
1137 dt->flags = 0;
1138 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1139 if (val != -1) {
1140 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1141 DISPLAY_FLAGS_VSYNC_LOW;
1142 }
1143 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1144 if (val != -1) {
1145 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1146 DISPLAY_FLAGS_HSYNC_LOW;
1147 }
1148 val = fdtdec_get_int(blob, node, "de-active", -1);
1149 if (val != -1) {
1150 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1151 DISPLAY_FLAGS_DE_LOW;
1152 }
1153 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1154 if (val != -1) {
1155 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1156 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1157 }
1158
1159 if (fdtdec_get_bool(blob, node, "interlaced"))
1160 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1161 if (fdtdec_get_bool(blob, node, "doublescan"))
1162 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1163 if (fdtdec_get_bool(blob, node, "doubleclk"))
1164 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1165
Simon Glass04b9dd12016-05-05 07:28:21 -06001166 return ret;
Simon Glass12e67112015-04-14 21:03:21 -06001167}
1168
Simon Glass08793612015-02-27 22:06:35 -07001169int fdtdec_setup(void)
Simon Glassb45122f2015-02-27 22:06:34 -07001170{
Masahiro Yamada0f925822015-08-12 07:31:55 +09001171#if CONFIG_IS_ENABLED(OF_CONTROL)
Simon Glassb45122f2015-02-27 22:06:34 -07001172# ifdef CONFIG_OF_EMBED
1173 /* Get a pointer to the FDT */
1174 gd->fdt_blob = __dtb_dt_begin;
1175# elif defined CONFIG_OF_SEPARATE
1176# ifdef CONFIG_SPL_BUILD
Simon Glass10172962015-10-17 19:41:19 -06001177 /* FDT is at end of BSS unless it is in a different memory region */
1178 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
1179 gd->fdt_blob = (ulong *)&_image_binary_end;
1180 else
1181 gd->fdt_blob = (ulong *)&__bss_end;
Simon Glassb45122f2015-02-27 22:06:34 -07001182# else
1183 /* FDT is at end of image */
1184 gd->fdt_blob = (ulong *)&_end;
Masahiro Yamada3bd926c2015-08-01 16:03:25 +09001185# endif
Simon Glassb45122f2015-02-27 22:06:34 -07001186# elif defined(CONFIG_OF_HOSTFILE)
1187 if (sandbox_read_fdt_from_file()) {
1188 puts("Failed to read control FDT\n");
1189 return -1;
1190 }
1191# endif
1192# ifndef CONFIG_SPL_BUILD
1193 /* Allow the early environment to override the fdt address */
1194 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
1195 (uintptr_t)gd->fdt_blob);
1196# endif
1197#endif
Simon Glass08793612015-02-27 22:06:35 -07001198 return fdtdec_prepare_fdt();
Simon Glassb45122f2015-02-27 22:06:34 -07001199}
1200
1201#endif /* !USE_HOSTCC */