blob: 70acc29c924d5d4e28419a6e39574e219f1f5289 [file] [log] [blame]
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.
22 */
23#define COMPAT(id, name) name
24static const char * const compat_names[COMPAT_COUNT] = {
Simon Glassf88fe2d2012-02-27 10:52:34 +000025 COMPAT(UNKNOWN, "<none>"),
Jimmy Zhang0e35ad02012-04-02 13:18:52 +000026 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
27 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
Jim Lin312693c2012-07-29 20:53:29 +000028 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
Simon Glasse1ae0d12012-10-17 13:24:49 +000029 COMPAT(NVIDIA_TEGRA20_PWM, "nvidia,tegra20-pwm"),
Simon Glass00f37322015-04-14 21:03:40 -060030 COMPAT(NVIDIA_TEGRA124_SOR, "nvidia,tegra124-sor"),
31 COMPAT(NVIDIA_TEGRA124_PMC, "nvidia,tegra124-pmc"),
Wei Ni87540de2012-10-17 13:24:50 +000032 COMPAT(NVIDIA_TEGRA20_DC, "nvidia,tegra20-dc"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070033 COMPAT(NVIDIA_TEGRA210_SDMMC, "nvidia,tegra210-sdhci"),
Stephen Warrena73ca472014-01-24 12:46:06 -070034 COMPAT(NVIDIA_TEGRA124_SDMMC, "nvidia,tegra124-sdhci"),
Tom Warrenf4e4e0b2013-03-04 14:07:18 -070035 COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"),
Tom Warrenc9aa8312013-02-21 12:31:30 +000036 COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"),
Thierry Reding79c7a902014-12-09 22:25:09 -070037 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070038 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
Hatim RVcc9fe332012-12-11 00:52:46 +000039 COMPAT(SMSC_LAN9215, "smsc,lan9215"),
40 COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
Rajeshwari Shindec34253d2012-12-26 20:03:10 +000041 COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"),
Rajeshwari Shinde72dbff12012-12-26 20:03:16 +000042 COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"),
43 COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"),
Hung-ying Tyan713cb682013-05-15 18:27:32 +080044 COMPAT(GOOGLE_CROS_EC_KEYB, "google,cros-ec-keyb"),
Rajeshwari Shinde6abd1622013-01-07 23:35:05 +000045 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
Vivek Gautam108b85b2013-09-14 14:02:48 +053046 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
Akshay Saraswat618766c2013-02-25 01:13:01 +000047 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
Ajay Kumard7377b52013-02-21 23:53:00 +000048 COMPAT(SAMSUNG_EXYNOS_FIMD, "samsung,exynos-fimd"),
Piotr Wilczekde461c52014-03-07 14:59:39 +010049 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
Ajay Kumar1e4706a2013-02-21 23:53:05 +000050 COMPAT(SAMSUNG_EXYNOS5_DP, "samsung,exynos5-dp"),
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"),
Rajeshwari Shindeee1e3c22013-06-24 16:47:20 +053053 COMPAT(SAMSUNG_EXYNOS_SERIAL, "samsung,exynos4210-uart"),
Przemyslaw Marczakf37df0f2015-04-20 20:07:45 +020054 COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686"),
Simon Glassbb8215f2013-03-11 06:08:08 +000055 COMPAT(GENERIC_SPI_FLASH, "spi-flash"),
Rajeshwari Shinde7772bb72013-02-14 19:46:15 +000056 COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"),
naveen krishna chatradhiecbd7e12013-04-29 15:58:52 -070057 COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"),
Ajay Kumar45c480c2014-09-05 16:53:33 +053058 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
Simon Glass77f9b1f2014-11-12 22:42:21 -070059 COMPAT(INTEL_MICROCODE, "intel,microcode"),
Simon Glass3ac83932014-11-14 18:18:38 -070060 COMPAT(INTEL_PANTHERPOINT_AHCI, "intel,pantherpoint-ahci"),
Simon Glassbb80be32014-11-24 21:18:16 -070061 COMPAT(INTEL_MODEL_206AX, "intel,model-206ax"),
Simon Glasseffcf062014-11-14 20:56:36 -070062 COMPAT(INTEL_GMA, "intel,gma"),
Thierry Reding6173c452014-12-09 22:25:05 -070063 COMPAT(AMS_AS3722, "ams,as3722"),
Simon Glass5da38082015-01-19 22:16:06 -070064 COMPAT(INTEL_ICH_SPI, "intel,ich-spi"),
Bin Mengc89ada02015-02-05 23:42:26 +080065 COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
Masahiro Yamada6462cde2015-03-11 15:54:46 +090066 COMPAT(SOCIONEXT_XHCI, "socionext,uniphier-xhci"),
Simon Glass90b16d12015-03-26 09:29:29 -060067 COMPAT(COMPAT_INTEL_PCH, "intel,bd82x6x"),
Marek Vasut6ab00db2015-07-25 19:33:56 +020068 COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
Marek Vasut129adf52015-07-25 10:48:14 +020069 COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"),
Marek Vasutef4b01b2015-12-05 19:28:44 +010070 COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"),
Andrew Bradfordf3b84a32015-08-07 08:36:35 -040071 COMPAT(COMPAT_INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"),
72 COMPAT(COMPAT_INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"),
Bin Meng394e0b62015-12-11 02:55:44 -080073 COMPAT(COMPAT_INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"),
Simon Glassb5220bc2011-10-24 19:15:32 +000074};
75
Simon Glassa53f4a22012-01-17 08:20:50 +000076const char *fdtdec_get_compatible(enum fdt_compat_id id)
77{
78 /* We allow reading of the 'unknown' ID for testing purposes */
79 assert(id >= 0 && id < COMPAT_COUNT);
80 return compat_names[id];
81}
82
Stephen Warren02464e32015-08-06 15:31:02 -060083fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
84 const char *prop_name, int index, int na, int ns,
85 fdt_size_t *sizep)
86{
87 const fdt32_t *prop, *prop_end;
88 const fdt32_t *prop_addr, *prop_size, *prop_after_size;
89 int len;
90 fdt_addr_t addr;
91
92 debug("%s: %s: ", __func__, prop_name);
93
94 if (na > (sizeof(fdt_addr_t) / sizeof(fdt32_t))) {
95 debug("(na too large for fdt_addr_t type)\n");
96 return FDT_ADDR_T_NONE;
97 }
98
99 if (ns > (sizeof(fdt_size_t) / sizeof(fdt32_t))) {
100 debug("(ns too large for fdt_size_t type)\n");
101 return FDT_ADDR_T_NONE;
102 }
103
104 prop = fdt_getprop(blob, node, prop_name, &len);
105 if (!prop) {
106 debug("(not found)\n");
107 return FDT_ADDR_T_NONE;
108 }
109 prop_end = prop + (len / sizeof(*prop));
110
111 prop_addr = prop + (index * (na + ns));
112 prop_size = prop_addr + na;
113 prop_after_size = prop_size + ns;
114 if (prop_after_size > prop_end) {
115 debug("(not enough data: expected >= %d cells, got %d cells)\n",
116 (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
117 return FDT_ADDR_T_NONE;
118 }
119
120 addr = fdtdec_get_number(prop_addr, na);
121
122 if (sizep) {
123 *sizep = fdtdec_get_number(prop_size, ns);
Simon Glassfd30d2c2016-02-29 15:25:37 -0700124 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
125 (unsigned long long)*sizep);
Stephen Warren02464e32015-08-06 15:31:02 -0600126 } else {
Simon Glassfd30d2c2016-02-29 15:25:37 -0700127 debug("addr=%08llx\n", (unsigned long long)addr);
Stephen Warren02464e32015-08-06 15:31:02 -0600128 }
129
130 return addr;
131}
132
133fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
134 int node, const char *prop_name, int index, fdt_size_t *sizep)
135{
136 int na, ns;
137
138 debug("%s: ", __func__);
139
140 na = fdt_address_cells(blob, parent);
141 if (na < 1) {
142 debug("(bad #address-cells)\n");
143 return FDT_ADDR_T_NONE;
144 }
145
146 ns = fdt_size_cells(blob, parent);
Przemyslaw Marczakff0a6352015-09-30 13:14:50 +0200147 if (ns < 0) {
Stephen Warren02464e32015-08-06 15:31:02 -0600148 debug("(bad #size-cells)\n");
149 return FDT_ADDR_T_NONE;
150 }
151
152 debug("na=%d, ns=%d, ", na, ns);
153
154 return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
155 ns, sizep);
156}
157
158fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
159 const char *prop_name, int index, fdt_size_t *sizep)
160{
161 int parent;
162
163 debug("%s: ", __func__);
164
165 parent = fdt_parent_offset(blob, node);
166 if (parent < 0) {
167 debug("(no parent found)\n");
168 return FDT_ADDR_T_NONE;
169 }
170
171 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
172 index, sizep);
173}
174
Simon Glass4397a2a2013-03-19 04:58:51 +0000175fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
176 const char *prop_name, fdt_size_t *sizep)
Simon Glassb5220bc2011-10-24 19:15:32 +0000177{
Stephen Warrend93b9a02015-09-25 10:11:41 -0600178 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
179
Stephen Warren02464e32015-08-06 15:31:02 -0600180 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
181 sizeof(fdt_addr_t) / sizeof(fdt32_t),
Stephen Warrend93b9a02015-09-25 10:11:41 -0600182 ns, sizep);
Simon Glassb5220bc2011-10-24 19:15:32 +0000183}
184
Simon Glass4397a2a2013-03-19 04:58:51 +0000185fdt_addr_t fdtdec_get_addr(const void *blob, int node,
186 const char *prop_name)
187{
188 return fdtdec_get_addr_size(blob, node, prop_name, NULL);
189}
190
Simon Glassfcc0a872015-11-29 13:17:54 -0700191#if defined(CONFIG_PCI) && defined(CONFIG_DM_PCI)
Bin Menga62e84d2014-12-31 16:05:11 +0800192int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type,
193 const char *prop_name, struct fdt_pci_addr *addr)
194{
195 const u32 *cell;
196 int len;
197 int ret = -ENOENT;
198
199 debug("%s: %s: ", __func__, prop_name);
200
201 /*
202 * If we follow the pci bus bindings strictly, we should check
203 * the value of the node's parent node's #address-cells and
204 * #size-cells. They need to be 3 and 2 accordingly. However,
205 * for simplicity we skip the check here.
206 */
207 cell = fdt_getprop(blob, node, prop_name, &len);
208 if (!cell)
209 goto fail;
210
211 if ((len % FDT_PCI_REG_SIZE) == 0) {
212 int num = len / FDT_PCI_REG_SIZE;
213 int i;
214
215 for (i = 0; i < num; i++) {
216 debug("pci address #%d: %08lx %08lx %08lx\n", i,
Stephen Warren4ea52432015-10-02 17:44:06 -0600217 (ulong)fdt32_to_cpu(cell[0]),
218 (ulong)fdt32_to_cpu(cell[1]),
219 (ulong)fdt32_to_cpu(cell[2]));
220 if ((fdt32_to_cpu(*cell) & type) == type) {
221 addr->phys_hi = fdt32_to_cpu(cell[0]);
222 addr->phys_mid = fdt32_to_cpu(cell[1]);
223 addr->phys_lo = fdt32_to_cpu(cell[1]);
Bin Menga62e84d2014-12-31 16:05:11 +0800224 break;
225 } else {
226 cell += (FDT_PCI_ADDR_CELLS +
227 FDT_PCI_SIZE_CELLS);
228 }
229 }
230
Simon Glass106cce92015-03-05 12:25:19 -0700231 if (i == num) {
232 ret = -ENXIO;
Bin Menga62e84d2014-12-31 16:05:11 +0800233 goto fail;
Simon Glass106cce92015-03-05 12:25:19 -0700234 }
Bin Menga62e84d2014-12-31 16:05:11 +0800235
236 return 0;
237 } else {
238 ret = -EINVAL;
239 }
240
241fail:
242 debug("(not found)\n");
243 return ret;
244}
245
246int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
247{
248 const char *list, *end;
249 int len;
250
251 list = fdt_getprop(blob, node, "compatible", &len);
252 if (!list)
253 return -ENOENT;
254
255 end = list + len;
256 while (list < end) {
257 char *s;
258
259 len = strlen(list);
260 if (len >= strlen("pciVVVV,DDDD")) {
261 s = strstr(list, "pci");
262
263 /*
264 * check if the string is something like pciVVVV,DDDD.RR
265 * or just pciVVVV,DDDD
266 */
267 if (s && s[7] == ',' &&
268 (s[12] == '.' || s[12] == 0)) {
269 s += 3;
270 *vendor = simple_strtol(s, NULL, 16);
271
272 s += 5;
273 *device = simple_strtol(s, NULL, 16);
274
275 return 0;
276 }
Bin Menga62e84d2014-12-31 16:05:11 +0800277 }
Bin Mengbc6351e2015-08-20 06:40:25 -0700278 list += (len + 1);
Bin Menga62e84d2014-12-31 16:05:11 +0800279 }
280
281 return -ENOENT;
282}
283
Simon Glassfcc0a872015-11-29 13:17:54 -0700284int fdtdec_get_pci_bar32(struct udevice *dev, struct fdt_pci_addr *addr,
285 u32 *bar)
Bin Menga62e84d2014-12-31 16:05:11 +0800286{
Bin Menga62e84d2014-12-31 16:05:11 +0800287 int barnum;
Bin Menga62e84d2014-12-31 16:05:11 +0800288
289 /* extract the bar number from fdt_pci_addr */
290 barnum = addr->phys_hi & 0xff;
291 if ((barnum < PCI_BASE_ADDRESS_0) || (barnum > PCI_CARDBUS_CIS))
292 return -EINVAL;
293
294 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
Simon Glassfcc0a872015-11-29 13:17:54 -0700295 *bar = dm_pci_read_bar32(dev, barnum);
Bin Menga62e84d2014-12-31 16:05:11 +0800296
297 return 0;
298}
299#endif
300
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000301uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
302 uint64_t default_val)
303{
304 const uint64_t *cell64;
305 int length;
306
307 cell64 = fdt_getprop(blob, node, prop_name, &length);
308 if (!cell64 || length < sizeof(*cell64))
309 return default_val;
310
311 return fdt64_to_cpu(*cell64);
312}
313
Simon Glassf88fe2d2012-02-27 10:52:34 +0000314int fdtdec_get_is_enabled(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000315{
316 const char *cell;
317
Simon Glassf88fe2d2012-02-27 10:52:34 +0000318 /*
319 * It should say "okay", so only allow that. Some fdts use "ok" but
320 * this is a bug. Please fix your device tree source file. See here
321 * for discussion:
322 *
323 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
324 */
Simon Glassb5220bc2011-10-24 19:15:32 +0000325 cell = fdt_getprop(blob, node, "status", NULL);
326 if (cell)
Simon Glassf88fe2d2012-02-27 10:52:34 +0000327 return 0 == strcmp(cell, "okay");
328 return 1;
Simon Glassb5220bc2011-10-24 19:15:32 +0000329}
330
Gerald Van Baren7cde3972012-11-12 23:13:54 -0500331enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000332{
333 enum fdt_compat_id id;
334
335 /* Search our drivers */
336 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
337 if (0 == fdt_node_check_compatible(blob, node,
338 compat_names[id]))
339 return id;
340 return COMPAT_UNKNOWN;
341}
342
343int fdtdec_next_compatible(const void *blob, int node,
344 enum fdt_compat_id id)
345{
346 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
347}
348
Simon Glass3ddecfc2012-04-02 13:18:42 +0000349int fdtdec_next_compatible_subnode(const void *blob, int node,
350 enum fdt_compat_id id, int *depthp)
351{
352 do {
353 node = fdt_next_node(blob, node, depthp);
354 } while (*depthp > 1);
355
356 /* If this is a direct subnode, and compatible, return it */
357 if (*depthp == 1 && 0 == fdt_node_check_compatible(
358 blob, node, compat_names[id]))
359 return node;
360
361 return -FDT_ERR_NOTFOUND;
362}
363
Simon Glassb5220bc2011-10-24 19:15:32 +0000364int fdtdec_next_alias(const void *blob, const char *name,
365 enum fdt_compat_id id, int *upto)
366{
367#define MAX_STR_LEN 20
368 char str[MAX_STR_LEN + 20];
369 int node, err;
370
371 /* snprintf() is not available */
372 assert(strlen(name) < MAX_STR_LEN);
373 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
Simon Glass00878472012-10-31 14:02:42 +0000374 node = fdt_path_offset(blob, str);
Simon Glassb5220bc2011-10-24 19:15:32 +0000375 if (node < 0)
376 return node;
377 err = fdt_node_check_compatible(blob, node, compat_names[id]);
378 if (err < 0)
379 return err;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000380 if (err)
381 return -FDT_ERR_NOTFOUND;
382 (*upto)++;
383 return node;
Simon Glassb5220bc2011-10-24 19:15:32 +0000384}
385
Simon Glassa53f4a22012-01-17 08:20:50 +0000386int fdtdec_find_aliases_for_id(const void *blob, const char *name,
387 enum fdt_compat_id id, int *node_list, int maxcount)
388{
Simon Glassc6782272012-02-03 15:13:53 +0000389 memset(node_list, '\0', sizeof(*node_list) * maxcount);
390
391 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
392}
393
394/* TODO: Can we tighten this code up a little? */
395int fdtdec_add_aliases_for_id(const void *blob, const char *name,
396 enum fdt_compat_id id, int *node_list, int maxcount)
397{
Simon Glassa53f4a22012-01-17 08:20:50 +0000398 int name_len = strlen(name);
399 int nodes[maxcount];
400 int num_found = 0;
401 int offset, node;
402 int alias_node;
403 int count;
404 int i, j;
405
406 /* find the alias node if present */
407 alias_node = fdt_path_offset(blob, "/aliases");
408
409 /*
410 * start with nothing, and we can assume that the root node can't
411 * match
412 */
413 memset(nodes, '\0', sizeof(nodes));
414
415 /* First find all the compatible nodes */
416 for (node = count = 0; node >= 0 && count < maxcount;) {
417 node = fdtdec_next_compatible(blob, node, id);
418 if (node >= 0)
419 nodes[count++] = node;
420 }
421 if (node >= 0)
422 debug("%s: warning: maxcount exceeded with alias '%s'\n",
423 __func__, name);
424
425 /* Now find all the aliases */
Simon Glassa53f4a22012-01-17 08:20:50 +0000426 for (offset = fdt_first_property_offset(blob, alias_node);
427 offset > 0;
428 offset = fdt_next_property_offset(blob, offset)) {
429 const struct fdt_property *prop;
430 const char *path;
431 int number;
432 int found;
433
434 node = 0;
435 prop = fdt_get_property_by_offset(blob, offset, NULL);
436 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
437 if (prop->len && 0 == strncmp(path, name, name_len))
438 node = fdt_path_offset(blob, prop->data);
439 if (node <= 0)
440 continue;
441
442 /* Get the alias number */
443 number = simple_strtoul(path + name_len, NULL, 10);
444 if (number < 0 || number >= maxcount) {
445 debug("%s: warning: alias '%s' is out of range\n",
446 __func__, path);
447 continue;
448 }
449
450 /* Make sure the node we found is actually in our list! */
451 found = -1;
452 for (j = 0; j < count; j++)
453 if (nodes[j] == node) {
454 found = j;
455 break;
456 }
457
458 if (found == -1) {
459 debug("%s: warning: alias '%s' points to a node "
460 "'%s' that is missing or is not compatible "
461 " with '%s'\n", __func__, path,
462 fdt_get_name(blob, node, NULL),
463 compat_names[id]);
464 continue;
465 }
466
467 /*
468 * Add this node to our list in the right place, and mark
469 * it as done.
470 */
471 if (fdtdec_get_is_enabled(blob, node)) {
Simon Glassc6782272012-02-03 15:13:53 +0000472 if (node_list[number]) {
473 debug("%s: warning: alias '%s' requires that "
474 "a node be placed in the list in a "
475 "position which is already filled by "
476 "node '%s'\n", __func__, path,
477 fdt_get_name(blob, node, NULL));
478 continue;
479 }
Simon Glassa53f4a22012-01-17 08:20:50 +0000480 node_list[number] = node;
481 if (number >= num_found)
482 num_found = number + 1;
483 }
Simon Glassc6782272012-02-03 15:13:53 +0000484 nodes[found] = 0;
Simon Glassa53f4a22012-01-17 08:20:50 +0000485 }
486
487 /* Add any nodes not mentioned by an alias */
488 for (i = j = 0; i < maxcount; i++) {
489 if (!node_list[i]) {
490 for (; j < maxcount; j++)
491 if (nodes[j] &&
492 fdtdec_get_is_enabled(blob, nodes[j]))
493 break;
494
495 /* Have we run out of nodes to add? */
496 if (j == maxcount)
497 break;
498
499 assert(!node_list[i]);
500 node_list[i] = nodes[j++];
501 if (i >= num_found)
502 num_found = i + 1;
503 }
504 }
505
506 return num_found;
507}
508
Simon Glass5c33c9f2014-07-23 06:55:09 -0600509int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
510 int *seqp)
511{
512 int base_len = strlen(base);
513 const char *find_name;
514 int find_namelen;
515 int prop_offset;
516 int aliases;
517
518 find_name = fdt_get_name(blob, offset, &find_namelen);
519 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
520
521 aliases = fdt_path_offset(blob, "/aliases");
522 for (prop_offset = fdt_first_property_offset(blob, aliases);
523 prop_offset > 0;
524 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
525 const char *prop;
526 const char *name;
527 const char *slash;
Simon Glassc4af6732015-06-23 15:39:08 -0600528 int len, val;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600529
530 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
531 debug(" - %s, %s\n", name, prop);
532 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
533 strncmp(name, base, base_len))
534 continue;
535
536 slash = strrchr(prop, '/');
537 if (strcmp(slash + 1, find_name))
538 continue;
Simon Glassc4af6732015-06-23 15:39:08 -0600539 val = trailing_strtol(name);
540 if (val != -1) {
541 *seqp = val;
542 debug("Found seq %d\n", *seqp);
543 return 0;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600544 }
545 }
546
547 debug("Not found\n");
548 return -ENOENT;
549}
550
Simon Glass3bc37a52015-10-17 19:41:14 -0600551const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
552{
553 int chosen_node;
554
555 if (!blob)
556 return NULL;
557 chosen_node = fdt_path_offset(blob, "/chosen");
558 return fdt_getprop(blob, chosen_node, name, NULL);
559}
560
Simon Glassaac07d42014-09-04 16:27:24 -0600561int fdtdec_get_chosen_node(const void *blob, const char *name)
562{
563 const char *prop;
Simon Glassaac07d42014-09-04 16:27:24 -0600564
Simon Glass3bc37a52015-10-17 19:41:14 -0600565 prop = fdtdec_get_chosen_prop(blob, name);
Simon Glassaac07d42014-09-04 16:27:24 -0600566 if (!prop)
567 return -FDT_ERR_NOTFOUND;
568 return fdt_path_offset(blob, prop);
569}
570
Simon Glass9a263e52012-03-28 10:08:24 +0000571int fdtdec_check_fdt(void)
572{
573 /*
574 * We must have an FDT, but we cannot panic() yet since the console
575 * is not ready. So for now, just assert(). Boards which need an early
576 * FDT (prior to console ready) will need to make their own
577 * arrangements and do their own checks.
578 */
579 assert(!fdtdec_prepare_fdt());
580 return 0;
581}
582
Simon Glassb5220bc2011-10-24 19:15:32 +0000583/*
584 * This function is a little odd in that it accesses global data. At some
585 * point if the architecture board.c files merge this will make more sense.
586 * Even now, it is common code.
587 */
Simon Glass9a263e52012-03-28 10:08:24 +0000588int fdtdec_prepare_fdt(void)
Simon Glassb5220bc2011-10-24 19:15:32 +0000589{
Simon Glassc309c2d2013-04-20 08:42:46 +0000590 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
591 fdt_check_header(gd->fdt_blob)) {
Simon Glass66312372015-02-27 22:06:32 -0700592#ifdef CONFIG_SPL_BUILD
593 puts("Missing DTB\n");
594#else
595 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 -0600596# ifdef DEBUG
597 if (gd->fdt_blob) {
598 printf("fdt_blob=%p\n", gd->fdt_blob);
599 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
600 32, 0);
601 }
602# endif
Simon Glass66312372015-02-27 22:06:32 -0700603#endif
Simon Glass9a263e52012-03-28 10:08:24 +0000604 return -1;
605 }
Simon Glassb5220bc2011-10-24 19:15:32 +0000606 return 0;
607}
Simon Glassd17da652012-02-27 10:52:35 +0000608
609int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
610{
611 const u32 *phandle;
612 int lookup;
613
Simon Glass1cb23232012-07-12 05:25:01 +0000614 debug("%s: %s\n", __func__, prop_name);
Simon Glassd17da652012-02-27 10:52:35 +0000615 phandle = fdt_getprop(blob, node, prop_name, NULL);
616 if (!phandle)
617 return -FDT_ERR_NOTFOUND;
618
619 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
620 return lookup;
621}
622
623/**
624 * Look up a property in a node and check that it has a minimum length.
625 *
626 * @param blob FDT blob
627 * @param node node to examine
628 * @param prop_name name of property to find
629 * @param min_len minimum property length in bytes
630 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
631 found, or -FDT_ERR_BADLAYOUT if not enough data
632 * @return pointer to cell, which is only valid if err == 0
633 */
634static const void *get_prop_check_min_len(const void *blob, int node,
635 const char *prop_name, int min_len, int *err)
636{
637 const void *cell;
638 int len;
639
640 debug("%s: %s\n", __func__, prop_name);
641 cell = fdt_getprop(blob, node, prop_name, &len);
642 if (!cell)
643 *err = -FDT_ERR_NOTFOUND;
644 else if (len < min_len)
645 *err = -FDT_ERR_BADLAYOUT;
646 else
647 *err = 0;
648 return cell;
649}
650
651int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
652 u32 *array, int count)
653{
654 const u32 *cell;
655 int i, err = 0;
656
657 debug("%s: %s\n", __func__, prop_name);
658 cell = get_prop_check_min_len(blob, node, prop_name,
659 sizeof(u32) * count, &err);
660 if (!err) {
661 for (i = 0; i < count; i++)
662 array[i] = fdt32_to_cpu(cell[i]);
663 }
664 return err;
665}
666
Simon Glassa9f04d42014-11-10 18:00:19 -0700667int fdtdec_get_int_array_count(const void *blob, int node,
668 const char *prop_name, u32 *array, int count)
669{
670 const u32 *cell;
671 int len, elems;
672 int i;
673
674 debug("%s: %s\n", __func__, prop_name);
675 cell = fdt_getprop(blob, node, prop_name, &len);
676 if (!cell)
677 return -FDT_ERR_NOTFOUND;
678 elems = len / sizeof(u32);
679 if (count > elems)
680 count = elems;
681 for (i = 0; i < count; i++)
682 array[i] = fdt32_to_cpu(cell[i]);
683
684 return count;
685}
686
Simon Glass96875e72012-04-02 13:18:41 +0000687const u32 *fdtdec_locate_array(const void *blob, int node,
688 const char *prop_name, int count)
689{
690 const u32 *cell;
691 int err;
692
693 cell = get_prop_check_min_len(blob, node, prop_name,
694 sizeof(u32) * count, &err);
695 return err ? NULL : cell;
696}
697
Simon Glassd17da652012-02-27 10:52:35 +0000698int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
699{
700 const s32 *cell;
701 int len;
702
703 debug("%s: %s\n", __func__, prop_name);
704 cell = fdt_getprop(blob, node, prop_name, &len);
705 return cell != NULL;
706}
Simon Glassed3ee5c2012-02-27 10:52:36 +0000707
Simon Glass57068a72015-01-05 20:05:26 -0700708int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
709 const char *list_name,
710 const char *cells_name,
711 int cell_count, int index,
712 struct fdtdec_phandle_args *out_args)
713{
714 const __be32 *list, *list_end;
715 int rc = 0, size, cur_index = 0;
716 uint32_t count = 0;
717 int node = -1;
718 int phandle;
719
720 /* Retrieve the phandle list property */
721 list = fdt_getprop(blob, src_node, list_name, &size);
722 if (!list)
723 return -ENOENT;
724 list_end = list + size / sizeof(*list);
725
726 /* Loop over the phandles until all the requested entry is found */
727 while (list < list_end) {
728 rc = -EINVAL;
729 count = 0;
730
731 /*
732 * If phandle is 0, then it is an empty entry with no
733 * arguments. Skip forward to the next entry.
734 */
735 phandle = be32_to_cpup(list++);
736 if (phandle) {
737 /*
738 * Find the provider node and parse the #*-cells
739 * property to determine the argument length.
740 *
741 * This is not needed if the cell count is hard-coded
742 * (i.e. cells_name not set, but cell_count is set),
743 * except when we're going to return the found node
744 * below.
745 */
746 if (cells_name || cur_index == index) {
747 node = fdt_node_offset_by_phandle(blob,
748 phandle);
749 if (!node) {
750 debug("%s: could not find phandle\n",
751 fdt_get_name(blob, src_node,
752 NULL));
753 goto err;
754 }
755 }
756
757 if (cells_name) {
758 count = fdtdec_get_int(blob, node, cells_name,
759 -1);
760 if (count == -1) {
761 debug("%s: could not get %s for %s\n",
762 fdt_get_name(blob, src_node,
763 NULL),
764 cells_name,
765 fdt_get_name(blob, node,
766 NULL));
767 goto err;
768 }
769 } else {
770 count = cell_count;
771 }
772
773 /*
774 * Make sure that the arguments actually fit in the
775 * remaining property data length
776 */
777 if (list + count > list_end) {
778 debug("%s: arguments longer than property\n",
779 fdt_get_name(blob, src_node, NULL));
780 goto err;
781 }
782 }
783
784 /*
785 * All of the error cases above bail out of the loop, so at
786 * this point, the parsing is successful. If the requested
787 * index matches, then fill the out_args structure and return,
788 * or return -ENOENT for an empty entry.
789 */
790 rc = -ENOENT;
791 if (cur_index == index) {
792 if (!phandle)
793 goto err;
794
795 if (out_args) {
796 int i;
797
798 if (count > MAX_PHANDLE_ARGS) {
799 debug("%s: too many arguments %d\n",
800 fdt_get_name(blob, src_node,
801 NULL), count);
802 count = MAX_PHANDLE_ARGS;
803 }
804 out_args->node = node;
805 out_args->args_count = count;
806 for (i = 0; i < count; i++) {
807 out_args->args[i] =
808 be32_to_cpup(list++);
809 }
810 }
811
812 /* Found it! return success */
813 return 0;
814 }
815
816 node = -1;
817 list += count;
818 cur_index++;
819 }
820
821 /*
822 * Result will be one of:
823 * -ENOENT : index is for empty phandle
824 * -EINVAL : parsing error on data
825 * [1..n] : Number of phandle (count mode; when index = -1)
826 */
827 rc = index < 0 ? cur_index : -ENOENT;
828 err:
829 return rc;
830}
831
Peng Fan1889a7e2016-02-01 13:31:15 +0800832int fdtdec_get_child_count(const void *blob, int node)
833{
834 int subnode;
835 int num = 0;
836
837 fdt_for_each_subnode(blob, subnode, node)
838 num++;
839
840 return num;
841}
842
Anton Staffbed4d892012-04-17 09:01:28 +0000843int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
844 u8 *array, int count)
845{
846 const u8 *cell;
847 int err;
848
849 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
850 if (!err)
851 memcpy(array, cell, count);
852 return err;
853}
854
855const u8 *fdtdec_locate_byte_array(const void *blob, int node,
856 const char *prop_name, int count)
857{
858 const u8 *cell;
859 int err;
860
861 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
862 if (err)
863 return NULL;
864 return cell;
865}
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000866
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000867int fdtdec_get_config_int(const void *blob, const char *prop_name,
868 int default_val)
869{
870 int config_node;
871
872 debug("%s: %s\n", __func__, prop_name);
873 config_node = fdt_path_offset(blob, "/config");
874 if (config_node < 0)
875 return default_val;
876 return fdtdec_get_int(blob, config_node, prop_name, default_val);
877}
Simon Glass332ab0d2012-10-25 16:30:59 +0000878
Gabe Black79289c02012-10-25 16:31:04 +0000879int fdtdec_get_config_bool(const void *blob, const char *prop_name)
880{
881 int config_node;
882 const void *prop;
883
884 debug("%s: %s\n", __func__, prop_name);
885 config_node = fdt_path_offset(blob, "/config");
886 if (config_node < 0)
887 return 0;
888 prop = fdt_get_property(blob, config_node, prop_name, NULL);
889
890 return prop != NULL;
891}
892
Simon Glass332ab0d2012-10-25 16:30:59 +0000893char *fdtdec_get_config_string(const void *blob, const char *prop_name)
894{
895 const char *nodep;
896 int nodeoffset;
897 int len;
898
899 debug("%s: %s\n", __func__, prop_name);
900 nodeoffset = fdt_path_offset(blob, "/config");
901 if (nodeoffset < 0)
902 return NULL;
903
904 nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
905 if (!nodep)
906 return NULL;
907
908 return (char *)nodep;
909}
Simon Glassf20c4612012-10-25 16:31:00 +0000910
Simon Glass76489832014-10-23 18:58:51 -0600911int fdtdec_decode_region(const void *blob, int node, const char *prop_name,
912 fdt_addr_t *basep, fdt_size_t *sizep)
Simon Glassf20c4612012-10-25 16:31:00 +0000913{
914 const fdt_addr_t *cell;
915 int len;
916
Simon Glass76489832014-10-23 18:58:51 -0600917 debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL),
918 prop_name);
Simon Glassf20c4612012-10-25 16:31:00 +0000919 cell = fdt_getprop(blob, node, prop_name, &len);
Simon Glass76489832014-10-23 18:58:51 -0600920 if (!cell || (len < sizeof(fdt_addr_t) * 2)) {
921 debug("cell=%p, len=%d\n", cell, len);
Simon Glassf20c4612012-10-25 16:31:00 +0000922 return -1;
Simon Glass76489832014-10-23 18:58:51 -0600923 }
Simon Glassf20c4612012-10-25 16:31:00 +0000924
Simon Glass76489832014-10-23 18:58:51 -0600925 *basep = fdt_addr_to_cpu(*cell);
926 *sizep = fdt_size_to_cpu(cell[1]);
927 debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep,
928 (ulong)*sizep);
929
Simon Glassf20c4612012-10-25 16:31:00 +0000930 return 0;
931}
Simon Glass006e73b2014-02-27 13:26:01 -0700932
933/**
934 * Read a flash entry from the fdt
935 *
936 * @param blob FDT blob
937 * @param node Offset of node to read
938 * @param name Name of node being read
939 * @param entry Place to put offset and size of this node
940 * @return 0 if ok, -ve on error
941 */
942int fdtdec_read_fmap_entry(const void *blob, int node, const char *name,
943 struct fmap_entry *entry)
944{
Simon Glassf3cc44f2014-10-23 18:58:52 -0600945 const char *prop;
Simon Glass006e73b2014-02-27 13:26:01 -0700946 u32 reg[2];
947
948 if (fdtdec_get_int_array(blob, node, "reg", reg, 2)) {
949 debug("Node '%s' has bad/missing 'reg' property\n", name);
950 return -FDT_ERR_NOTFOUND;
951 }
952 entry->offset = reg[0];
953 entry->length = reg[1];
Simon Glassf3cc44f2014-10-23 18:58:52 -0600954 entry->used = fdtdec_get_int(blob, node, "used", entry->length);
955 prop = fdt_getprop(blob, node, "compress", NULL);
956 entry->compress_algo = prop && !strcmp(prop, "lzo") ?
957 FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE;
958 prop = fdt_getprop(blob, node, "hash", &entry->hash_size);
959 entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE;
960 entry->hash = (uint8_t *)prop;
Simon Glass006e73b2014-02-27 13:26:01 -0700961
962 return 0;
963}
Thierry Reding56f42242014-08-26 17:33:53 +0200964
Simon Glass5f7bfdd2015-03-05 12:25:14 -0700965u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
Thierry Reding56f42242014-08-26 17:33:53 +0200966{
967 u64 number = 0;
968
969 while (cells--)
970 number = (number << 32) | fdt32_to_cpu(*ptr++);
971
972 return number;
973}
974
975int fdt_get_resource(const void *fdt, int node, const char *property,
976 unsigned int index, struct fdt_resource *res)
977{
978 const fdt32_t *ptr, *end;
979 int na, ns, len, parent;
980 unsigned int i = 0;
981
982 parent = fdt_parent_offset(fdt, node);
983 if (parent < 0)
984 return parent;
985
986 na = fdt_address_cells(fdt, parent);
987 ns = fdt_size_cells(fdt, parent);
988
989 ptr = fdt_getprop(fdt, node, property, &len);
990 if (!ptr)
991 return len;
992
993 end = ptr + len / sizeof(*ptr);
994
995 while (ptr + na + ns <= end) {
996 if (i == index) {
997 res->start = res->end = fdtdec_get_number(ptr, na);
998 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
999 return 0;
1000 }
1001
1002 ptr += na + ns;
1003 i++;
1004 }
1005
1006 return -FDT_ERR_NOTFOUND;
1007}
1008
1009int fdt_get_named_resource(const void *fdt, int node, const char *property,
1010 const char *prop_names, const char *name,
1011 struct fdt_resource *res)
1012{
1013 int index;
1014
1015 index = fdt_find_string(fdt, node, prop_names, name);
1016 if (index < 0)
1017 return index;
1018
1019 return fdt_get_resource(fdt, node, property, index, res);
1020}
Thierry Reding9f85eee2014-08-26 17:33:54 +02001021
Simon Glass26403872014-10-23 18:58:56 -06001022int fdtdec_decode_memory_region(const void *blob, int config_node,
1023 const char *mem_type, const char *suffix,
1024 fdt_addr_t *basep, fdt_size_t *sizep)
1025{
1026 char prop_name[50];
1027 const char *mem;
1028 fdt_size_t size, offset_size;
1029 fdt_addr_t base, offset;
1030 int node;
1031
1032 if (config_node == -1) {
1033 config_node = fdt_path_offset(blob, "/config");
1034 if (config_node < 0) {
1035 debug("%s: Cannot find /config node\n", __func__);
1036 return -ENOENT;
1037 }
1038 }
1039 if (!suffix)
1040 suffix = "";
1041
1042 snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type,
1043 suffix);
1044 mem = fdt_getprop(blob, config_node, prop_name, NULL);
1045 if (!mem) {
1046 debug("%s: No memory type for '%s', using /memory\n", __func__,
1047 prop_name);
1048 mem = "/memory";
1049 }
1050
1051 node = fdt_path_offset(blob, mem);
1052 if (node < 0) {
1053 debug("%s: Failed to find node '%s': %s\n", __func__, mem,
1054 fdt_strerror(node));
1055 return -ENOENT;
1056 }
1057
1058 /*
1059 * Not strictly correct - the memory may have multiple banks. We just
1060 * use the first
1061 */
1062 if (fdtdec_decode_region(blob, node, "reg", &base, &size)) {
1063 debug("%s: Failed to decode memory region %s\n", __func__,
1064 mem);
1065 return -EINVAL;
1066 }
1067
1068 snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type,
1069 suffix);
1070 if (fdtdec_decode_region(blob, config_node, prop_name, &offset,
1071 &offset_size)) {
1072 debug("%s: Failed to decode memory region '%s'\n", __func__,
1073 prop_name);
1074 return -EINVAL;
1075 }
1076
1077 *basep = base + offset;
1078 *sizep = offset_size;
1079
1080 return 0;
1081}
Simon Glassb45122f2015-02-27 22:06:34 -07001082
Simon Glass12e67112015-04-14 21:03:21 -06001083static int decode_timing_property(const void *blob, int node, const char *name,
1084 struct timing_entry *result)
1085{
1086 int length, ret = 0;
1087 const u32 *prop;
1088
1089 prop = fdt_getprop(blob, node, name, &length);
1090 if (!prop) {
1091 debug("%s: could not find property %s\n",
1092 fdt_get_name(blob, node, NULL), name);
1093 return length;
1094 }
1095
1096 if (length == sizeof(u32)) {
1097 result->typ = fdtdec_get_int(blob, node, name, 0);
1098 result->min = result->typ;
1099 result->max = result->typ;
1100 } else {
1101 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
1102 }
1103
1104 return ret;
1105}
1106
1107int fdtdec_decode_display_timing(const void *blob, int parent, int index,
1108 struct display_timing *dt)
1109{
1110 int i, node, timings_node;
1111 u32 val = 0;
1112 int ret = 0;
1113
1114 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
1115 if (timings_node < 0)
1116 return timings_node;
1117
1118 for (i = 0, node = fdt_first_subnode(blob, timings_node);
1119 node > 0 && i != index;
1120 node = fdt_next_subnode(blob, node))
1121 i++;
1122
1123 if (node < 0)
1124 return node;
1125
1126 memset(dt, 0, sizeof(*dt));
1127
1128 ret |= decode_timing_property(blob, node, "hback-porch",
1129 &dt->hback_porch);
1130 ret |= decode_timing_property(blob, node, "hfront-porch",
1131 &dt->hfront_porch);
1132 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
1133 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
1134 ret |= decode_timing_property(blob, node, "vback-porch",
1135 &dt->vback_porch);
1136 ret |= decode_timing_property(blob, node, "vfront-porch",
1137 &dt->vfront_porch);
1138 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
1139 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
1140 ret |= decode_timing_property(blob, node, "clock-frequency",
1141 &dt->pixelclock);
1142
1143 dt->flags = 0;
1144 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1145 if (val != -1) {
1146 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1147 DISPLAY_FLAGS_VSYNC_LOW;
1148 }
1149 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1150 if (val != -1) {
1151 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1152 DISPLAY_FLAGS_HSYNC_LOW;
1153 }
1154 val = fdtdec_get_int(blob, node, "de-active", -1);
1155 if (val != -1) {
1156 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1157 DISPLAY_FLAGS_DE_LOW;
1158 }
1159 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1160 if (val != -1) {
1161 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1162 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1163 }
1164
1165 if (fdtdec_get_bool(blob, node, "interlaced"))
1166 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1167 if (fdtdec_get_bool(blob, node, "doublescan"))
1168 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1169 if (fdtdec_get_bool(blob, node, "doubleclk"))
1170 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1171
1172 return 0;
1173}
1174
Simon Glass08793612015-02-27 22:06:35 -07001175int fdtdec_setup(void)
Simon Glassb45122f2015-02-27 22:06:34 -07001176{
Masahiro Yamada0f925822015-08-12 07:31:55 +09001177#if CONFIG_IS_ENABLED(OF_CONTROL)
Simon Glassb45122f2015-02-27 22:06:34 -07001178# ifdef CONFIG_OF_EMBED
1179 /* Get a pointer to the FDT */
1180 gd->fdt_blob = __dtb_dt_begin;
1181# elif defined CONFIG_OF_SEPARATE
1182# ifdef CONFIG_SPL_BUILD
Simon Glass10172962015-10-17 19:41:19 -06001183 /* FDT is at end of BSS unless it is in a different memory region */
1184 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
1185 gd->fdt_blob = (ulong *)&_image_binary_end;
1186 else
1187 gd->fdt_blob = (ulong *)&__bss_end;
Simon Glassb45122f2015-02-27 22:06:34 -07001188# else
1189 /* FDT is at end of image */
1190 gd->fdt_blob = (ulong *)&_end;
Masahiro Yamada3bd926c2015-08-01 16:03:25 +09001191# endif
Simon Glassb45122f2015-02-27 22:06:34 -07001192# elif defined(CONFIG_OF_HOSTFILE)
1193 if (sandbox_read_fdt_from_file()) {
1194 puts("Failed to read control FDT\n");
1195 return -1;
1196 }
1197# endif
1198# ifndef CONFIG_SPL_BUILD
1199 /* Allow the early environment to override the fdt address */
1200 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
1201 (uintptr_t)gd->fdt_blob);
1202# endif
1203#endif
Simon Glass08793612015-02-27 22:06:35 -07001204 return fdtdec_prepare_fdt();
Simon Glassb45122f2015-02-27 22:06:34 -07001205}
1206
1207#endif /* !USE_HOSTCC */