blob: ddbd1ae96e060e234c8666afe401c19f59c98054 [file] [log] [blame]
Simon Glass2d2af852011-10-24 19:15:32 +00001/*
2 * Copyright (c) 2011 The Chromium OS Authors.
Wolfgang Denkd79de1d2013-07-08 09:37:19 +02003 * SPDX-License-Identifier: GPL-2.0+
Simon Glass2d2af852011-10-24 19:15:32 +00004 */
5
Heiko Schocherd7b42322014-03-03 12:19:30 +01006#ifndef USE_HOSTCC
Simon Glass2d2af852011-10-24 19:15:32 +00007#include <common.h>
Simon Glassf1037ad2015-11-29 13:17:54 -07008#include <dm.h>
Simon Glass9908ad42014-07-23 06:55:09 -06009#include <errno.h>
Simon Glass2d2af852011-10-24 19:15:32 +000010#include <serial.h>
11#include <libfdt.h>
12#include <fdtdec.h>
Simon Glass26b78b22015-02-27 22:06:34 -070013#include <asm/sections.h>
Simon Glass9908ad42014-07-23 06:55:09 -060014#include <linux/ctype.h>
Simon Glass2d2af852011-10-24 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 Glass65444982012-02-27 10:52:34 +000025 COMPAT(UNKNOWN, "<none>"),
Jimmy Zhang5983ef82012-04-02 13:18:52 +000026 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
27 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
Jim Lin5d309e62012-07-29 20:53:29 +000028 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
Simon Glass1564f342012-10-17 13:24:49 +000029 COMPAT(NVIDIA_TEGRA20_PWM, "nvidia,tegra20-pwm"),
Simon Glassf4f5cfa2015-04-14 21:03:40 -060030 COMPAT(NVIDIA_TEGRA124_SOR, "nvidia,tegra124-sor"),
31 COMPAT(NVIDIA_TEGRA124_PMC, "nvidia,tegra124-pmc"),
Wei Ni6555e692012-10-17 13:24:50 +000032 COMPAT(NVIDIA_TEGRA20_DC, "nvidia,tegra20-dc"),
Tom Warrenab0cc6b2015-03-04 16:36:00 -070033 COMPAT(NVIDIA_TEGRA210_SDMMC, "nvidia,tegra210-sdhci"),
Stephen Warren65e0eb12014-01-24 12:46:06 -070034 COMPAT(NVIDIA_TEGRA124_SDMMC, "nvidia,tegra124-sdhci"),
Tom Warren7db0e2d2013-03-04 14:07:18 -070035 COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"),
Tom Warren9745cf82013-02-21 12:31:30 +000036 COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"),
Thierry Redingf202e022014-12-09 22:25:09 -070037 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
Tom Warrenab0cc6b2015-03-04 16:36:00 -070038 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
Hatim RVbe5ad5a2012-12-11 00:52:46 +000039 COMPAT(SMSC_LAN9215, "smsc,lan9215"),
40 COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
Rajeshwari Shinde2b71e9d2012-12-26 20:03:10 +000041 COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"),
Rajeshwari Shinde9d116732012-12-26 20:03:16 +000042 COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"),
43 COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"),
Hung-ying Tyan4a48bcf2013-05-15 18:27:32 +080044 COMPAT(GOOGLE_CROS_EC_KEYB, "google,cros-ec-keyb"),
Rajeshwari Shinded6e9f442013-01-07 23:35:05 +000045 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
Vivek Gautamf8745232013-09-14 14:02:48 +053046 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
Akshay Saraswataa773182013-02-25 01:13:01 +000047 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
Ajay Kumar035a1cd2013-02-21 23:53:00 +000048 COMPAT(SAMSUNG_EXYNOS_FIMD, "samsung,exynos-fimd"),
Piotr Wilczek24e368a2014-03-07 14:59:39 +010049 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
Ajay Kumar39bac152013-02-21 23:53:05 +000050 COMPAT(SAMSUNG_EXYNOS5_DP, "samsung,exynos5-dp"),
Jaehoon Chunge3fb6fa2014-05-16 13:59:51 +090051 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
Piotr Wilczek12cf19e2014-03-07 14:59:41 +010052 COMPAT(SAMSUNG_EXYNOS_MMC, "samsung,exynos-mmc"),
Rajeshwari Shindeffff1612013-06-24 16:47:20 +053053 COMPAT(SAMSUNG_EXYNOS_SERIAL, "samsung,exynos4210-uart"),
Przemyslaw Marczakff0e22b2015-04-20 20:07:45 +020054 COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686"),
Simon Glass609560942013-03-11 06:08:08 +000055 COMPAT(GENERIC_SPI_FLASH, "spi-flash"),
Rajeshwari Shinde003c28c2013-02-14 19:46:15 +000056 COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"),
naveen krishna chatradhi0734bae2013-04-29 15:58:52 -070057 COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"),
Ajay Kumare24c5022014-09-05 16:53:33 +053058 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
Simon Glassf79d5382014-11-12 22:42:21 -070059 COMPAT(INTEL_MICROCODE, "intel,microcode"),
Simon Glass268eefd2014-11-12 22:42:28 -070060 COMPAT(MEMORY_SPD, "memory-spd"),
Simon Glasscd0adb32014-11-14 18:18:38 -070061 COMPAT(INTEL_PANTHERPOINT_AHCI, "intel,pantherpoint-ahci"),
Simon Glasscf46d372014-11-24 21:18:16 -070062 COMPAT(INTEL_MODEL_206AX, "intel,model-206ax"),
Simon Glassd90f8e12014-11-14 20:56:36 -070063 COMPAT(INTEL_GMA, "intel,gma"),
Thierry Reding09c0cf22014-12-09 22:25:05 -070064 COMPAT(AMS_AS3722, "ams,as3722"),
Simon Glassb34f4052015-01-19 22:16:06 -070065 COMPAT(INTEL_ICH_SPI, "intel,ich-spi"),
Bin Meng2bfd2642015-02-05 23:42:26 +080066 COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
Masahiro Yamadad5f83a42015-03-11 15:54:46 +090067 COMPAT(SOCIONEXT_XHCI, "socionext,uniphier-xhci"),
Simon Glass06e694f2015-03-26 09:29:29 -060068 COMPAT(COMPAT_INTEL_PCH, "intel,bd82x6x"),
Marek Vasutf3f8fe22015-07-25 19:33:56 +020069 COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
Marek Vasut17497232015-07-25 10:48:14 +020070 COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"),
Marek Vasutf26c1ae2015-12-05 19:28:44 +010071 COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"),
Andrew Bradford74fdb582015-08-07 08:36:35 -040072 COMPAT(COMPAT_INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"),
73 COMPAT(COMPAT_INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"),
Bin Meng5ce2d8b2015-12-11 02:55:44 -080074 COMPAT(COMPAT_INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"),
Simon Glass2d2af852011-10-24 19:15:32 +000075};
76
Simon Glassb022ead2012-01-17 08:20:50 +000077const char *fdtdec_get_compatible(enum fdt_compat_id id)
78{
79 /* We allow reading of the 'unknown' ID for testing purposes */
80 assert(id >= 0 && id < COMPAT_COUNT);
81 return compat_names[id];
82}
83
Stephen Warren6dfe6182015-08-06 15:31:02 -060084fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
85 const char *prop_name, int index, int na, int ns,
86 fdt_size_t *sizep)
Simon Glass2d2af852011-10-24 19:15:32 +000087{
Stephen Warren6dfe6182015-08-06 15:31:02 -060088 const fdt32_t *prop, *prop_end;
89 const fdt32_t *prop_addr, *prop_size, *prop_after_size;
Simon Glass04c50d12015-08-02 18:13:50 -060090 int len;
Stephen Warren6dfe6182015-08-06 15:31:02 -060091 fdt_addr_t addr;
Simon Glass2d2af852011-10-24 19:15:32 +000092
Simon Glassc8c86dd2012-07-12 05:25:01 +000093 debug("%s: %s: ", __func__, prop_name);
Stephen Warren6dfe6182015-08-06 15:31:02 -060094
95 if (na > (sizeof(fdt_addr_t) / sizeof(fdt32_t))) {
96 debug("(na too large for fdt_addr_t type)\n");
97 return FDT_ADDR_T_NONE;
98 }
99
100 if (ns > (sizeof(fdt_size_t) / sizeof(fdt32_t))) {
101 debug("(ns too large for fdt_size_t type)\n");
102 return FDT_ADDR_T_NONE;
103 }
104
105 prop = fdt_getprop(blob, node, prop_name, &len);
106 if (!prop) {
107 debug("(not found)\n");
108 return FDT_ADDR_T_NONE;
109 }
110 prop_end = prop + (len / sizeof(*prop));
Simon Glassc8c86dd2012-07-12 05:25:01 +0000111
Stephen Warren6dfe6182015-08-06 15:31:02 -0600112 prop_addr = prop + (index * (na + ns));
113 prop_size = prop_addr + na;
114 prop_after_size = prop_size + ns;
115 if (prop_after_size > prop_end) {
116 debug("(not enough data: expected >= %d cells, got %d cells)\n",
117 (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
118 return FDT_ADDR_T_NONE;
Simon Glassc8c86dd2012-07-12 05:25:01 +0000119 }
Stephen Warren6dfe6182015-08-06 15:31:02 -0600120
121 addr = fdtdec_get_number(prop_addr, na);
122
123 if (sizep) {
124 *sizep = fdtdec_get_number(prop_size, ns);
Simon Glass0b14dc72016-02-29 15:25:37 -0700125 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
126 (unsigned long long)*sizep);
Stephen Warren6dfe6182015-08-06 15:31:02 -0600127 } else {
Simon Glass0b14dc72016-02-29 15:25:37 -0700128 debug("addr=%08llx\n", (unsigned long long)addr);
Stephen Warren6dfe6182015-08-06 15:31:02 -0600129 }
130
131 return addr;
132}
133
134fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
135 int node, const char *prop_name, int index, fdt_size_t *sizep)
136{
137 int na, ns;
138
139 debug("%s: ", __func__);
140
141 na = fdt_address_cells(blob, parent);
142 if (na < 1) {
143 debug("(bad #address-cells)\n");
144 return FDT_ADDR_T_NONE;
145 }
146
147 ns = fdt_size_cells(blob, parent);
Przemyslaw Marczak7b42f4d2015-09-30 13:14:50 +0200148 if (ns < 0) {
Stephen Warren6dfe6182015-08-06 15:31:02 -0600149 debug("(bad #size-cells)\n");
150 return FDT_ADDR_T_NONE;
151 }
152
153 debug("na=%d, ns=%d, ", na, ns);
154
155 return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
156 ns, sizep);
157}
158
159fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
160 const char *prop_name, int index, fdt_size_t *sizep)
161{
162 int parent;
163
164 debug("%s: ", __func__);
165
166 parent = fdt_parent_offset(blob, node);
167 if (parent < 0) {
168 debug("(no parent found)\n");
169 return FDT_ADDR_T_NONE;
170 }
171
172 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
173 index, sizep);
174}
175
176fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
177 const char *prop_name, fdt_size_t *sizep)
178{
Stephen Warrenfda59162015-09-25 10:11:41 -0600179 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
180
Stephen Warren6dfe6182015-08-06 15:31:02 -0600181 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
182 sizeof(fdt_addr_t) / sizeof(fdt32_t),
Stephen Warrenfda59162015-09-25 10:11:41 -0600183 ns, sizep);
Simon Glass2d2af852011-10-24 19:15:32 +0000184}
185
Simon Glassf4299552013-03-19 04:58:51 +0000186fdt_addr_t fdtdec_get_addr(const void *blob, int node,
187 const char *prop_name)
188{
189 return fdtdec_get_addr_size(blob, node, prop_name, NULL);
190}
191
Simon Glassf1037ad2015-11-29 13:17:54 -0700192#if defined(CONFIG_PCI) && defined(CONFIG_DM_PCI)
Bin Meng779847e2014-12-31 16:05:11 +0800193int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type,
194 const char *prop_name, struct fdt_pci_addr *addr)
195{
196 const u32 *cell;
197 int len;
198 int ret = -ENOENT;
199
200 debug("%s: %s: ", __func__, prop_name);
201
202 /*
203 * If we follow the pci bus bindings strictly, we should check
204 * the value of the node's parent node's #address-cells and
205 * #size-cells. They need to be 3 and 2 accordingly. However,
206 * for simplicity we skip the check here.
207 */
208 cell = fdt_getprop(blob, node, prop_name, &len);
209 if (!cell)
210 goto fail;
211
212 if ((len % FDT_PCI_REG_SIZE) == 0) {
213 int num = len / FDT_PCI_REG_SIZE;
214 int i;
215
216 for (i = 0; i < num; i++) {
217 debug("pci address #%d: %08lx %08lx %08lx\n", i,
Stephen Warrenfed69ad2015-10-02 17:44:06 -0600218 (ulong)fdt32_to_cpu(cell[0]),
219 (ulong)fdt32_to_cpu(cell[1]),
220 (ulong)fdt32_to_cpu(cell[2]));
221 if ((fdt32_to_cpu(*cell) & type) == type) {
222 addr->phys_hi = fdt32_to_cpu(cell[0]);
223 addr->phys_mid = fdt32_to_cpu(cell[1]);
224 addr->phys_lo = fdt32_to_cpu(cell[1]);
Bin Meng779847e2014-12-31 16:05:11 +0800225 break;
226 } else {
227 cell += (FDT_PCI_ADDR_CELLS +
228 FDT_PCI_SIZE_CELLS);
229 }
230 }
231
Simon Glass2eb77f12015-03-05 12:25:19 -0700232 if (i == num) {
233 ret = -ENXIO;
Bin Meng779847e2014-12-31 16:05:11 +0800234 goto fail;
Simon Glass2eb77f12015-03-05 12:25:19 -0700235 }
Bin Meng779847e2014-12-31 16:05:11 +0800236
237 return 0;
238 } else {
239 ret = -EINVAL;
240 }
241
242fail:
243 debug("(not found)\n");
244 return ret;
245}
246
247int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
248{
249 const char *list, *end;
250 int len;
251
252 list = fdt_getprop(blob, node, "compatible", &len);
253 if (!list)
254 return -ENOENT;
255
256 end = list + len;
257 while (list < end) {
258 char *s;
259
260 len = strlen(list);
261 if (len >= strlen("pciVVVV,DDDD")) {
262 s = strstr(list, "pci");
263
264 /*
265 * check if the string is something like pciVVVV,DDDD.RR
266 * or just pciVVVV,DDDD
267 */
268 if (s && s[7] == ',' &&
269 (s[12] == '.' || s[12] == 0)) {
270 s += 3;
271 *vendor = simple_strtol(s, NULL, 16);
272
273 s += 5;
274 *device = simple_strtol(s, NULL, 16);
275
276 return 0;
277 }
Bin Meng779847e2014-12-31 16:05:11 +0800278 }
Bin Menga2822b82015-08-20 06:40:25 -0700279 list += (len + 1);
Bin Meng779847e2014-12-31 16:05:11 +0800280 }
281
282 return -ENOENT;
283}
284
Simon Glassf1037ad2015-11-29 13:17:54 -0700285int fdtdec_get_pci_bar32(struct udevice *dev, struct fdt_pci_addr *addr,
286 u32 *bar)
Bin Meng779847e2014-12-31 16:05:11 +0800287{
Bin Meng779847e2014-12-31 16:05:11 +0800288 int barnum;
Bin Meng779847e2014-12-31 16:05:11 +0800289
290 /* extract the bar number from fdt_pci_addr */
291 barnum = addr->phys_hi & 0xff;
292 if ((barnum < PCI_BASE_ADDRESS_0) || (barnum > PCI_CARDBUS_CIS))
293 return -EINVAL;
294
295 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
Simon Glassf1037ad2015-11-29 13:17:54 -0700296 *bar = dm_pci_read_bar32(dev, barnum);
Bin Meng779847e2014-12-31 16:05:11 +0800297
298 return 0;
299}
300#endif
301
Che-Liang Chioud81d0172012-10-25 16:31:05 +0000302uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
303 uint64_t default_val)
304{
305 const uint64_t *cell64;
306 int length;
307
308 cell64 = fdt_getprop(blob, node, prop_name, &length);
309 if (!cell64 || length < sizeof(*cell64))
310 return default_val;
311
312 return fdt64_to_cpu(*cell64);
313}
314
Simon Glass65444982012-02-27 10:52:34 +0000315int fdtdec_get_is_enabled(const void *blob, int node)
Simon Glass2d2af852011-10-24 19:15:32 +0000316{
317 const char *cell;
318
Simon Glass65444982012-02-27 10:52:34 +0000319 /*
320 * It should say "okay", so only allow that. Some fdts use "ok" but
321 * this is a bug. Please fix your device tree source file. See here
322 * for discussion:
323 *
324 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
325 */
Simon Glass2d2af852011-10-24 19:15:32 +0000326 cell = fdt_getprop(blob, node, "status", NULL);
327 if (cell)
Simon Glass65444982012-02-27 10:52:34 +0000328 return 0 == strcmp(cell, "okay");
329 return 1;
Simon Glass2d2af852011-10-24 19:15:32 +0000330}
331
Gerald Van Barencdac3392012-11-12 23:13:54 -0500332enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
Simon Glass2d2af852011-10-24 19:15:32 +0000333{
334 enum fdt_compat_id id;
335
336 /* Search our drivers */
337 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
338 if (0 == fdt_node_check_compatible(blob, node,
339 compat_names[id]))
340 return id;
341 return COMPAT_UNKNOWN;
342}
343
344int fdtdec_next_compatible(const void *blob, int node,
345 enum fdt_compat_id id)
346{
347 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
348}
349
Simon Glass2e979b12012-04-02 13:18:42 +0000350int fdtdec_next_compatible_subnode(const void *blob, int node,
351 enum fdt_compat_id id, int *depthp)
352{
353 do {
354 node = fdt_next_node(blob, node, depthp);
355 } while (*depthp > 1);
356
357 /* If this is a direct subnode, and compatible, return it */
358 if (*depthp == 1 && 0 == fdt_node_check_compatible(
359 blob, node, compat_names[id]))
360 return node;
361
362 return -FDT_ERR_NOTFOUND;
363}
364
Simon Glass2d2af852011-10-24 19:15:32 +0000365int fdtdec_next_alias(const void *blob, const char *name,
366 enum fdt_compat_id id, int *upto)
367{
368#define MAX_STR_LEN 20
369 char str[MAX_STR_LEN + 20];
370 int node, err;
371
372 /* snprintf() is not available */
373 assert(strlen(name) < MAX_STR_LEN);
374 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
Simon Glasse1d15ca2012-10-31 14:02:42 +0000375 node = fdt_path_offset(blob, str);
Simon Glass2d2af852011-10-24 19:15:32 +0000376 if (node < 0)
377 return node;
378 err = fdt_node_check_compatible(blob, node, compat_names[id]);
379 if (err < 0)
380 return err;
Simon Glass65444982012-02-27 10:52:34 +0000381 if (err)
382 return -FDT_ERR_NOTFOUND;
383 (*upto)++;
384 return node;
Simon Glass2d2af852011-10-24 19:15:32 +0000385}
386
Simon Glassb022ead2012-01-17 08:20:50 +0000387int fdtdec_find_aliases_for_id(const void *blob, const char *name,
388 enum fdt_compat_id id, int *node_list, int maxcount)
389{
Simon Glass1f772662012-02-03 15:13:53 +0000390 memset(node_list, '\0', sizeof(*node_list) * maxcount);
391
392 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
393}
394
395/* TODO: Can we tighten this code up a little? */
396int fdtdec_add_aliases_for_id(const void *blob, const char *name,
397 enum fdt_compat_id id, int *node_list, int maxcount)
398{
Simon Glassb022ead2012-01-17 08:20:50 +0000399 int name_len = strlen(name);
400 int nodes[maxcount];
401 int num_found = 0;
402 int offset, node;
403 int alias_node;
404 int count;
405 int i, j;
406
407 /* find the alias node if present */
408 alias_node = fdt_path_offset(blob, "/aliases");
409
410 /*
411 * start with nothing, and we can assume that the root node can't
412 * match
413 */
414 memset(nodes, '\0', sizeof(nodes));
415
416 /* First find all the compatible nodes */
417 for (node = count = 0; node >= 0 && count < maxcount;) {
418 node = fdtdec_next_compatible(blob, node, id);
419 if (node >= 0)
420 nodes[count++] = node;
421 }
422 if (node >= 0)
423 debug("%s: warning: maxcount exceeded with alias '%s'\n",
424 __func__, name);
425
426 /* Now find all the aliases */
Simon Glassb022ead2012-01-17 08:20:50 +0000427 for (offset = fdt_first_property_offset(blob, alias_node);
428 offset > 0;
429 offset = fdt_next_property_offset(blob, offset)) {
430 const struct fdt_property *prop;
431 const char *path;
432 int number;
433 int found;
434
435 node = 0;
436 prop = fdt_get_property_by_offset(blob, offset, NULL);
437 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
438 if (prop->len && 0 == strncmp(path, name, name_len))
439 node = fdt_path_offset(blob, prop->data);
440 if (node <= 0)
441 continue;
442
443 /* Get the alias number */
444 number = simple_strtoul(path + name_len, NULL, 10);
445 if (number < 0 || number >= maxcount) {
446 debug("%s: warning: alias '%s' is out of range\n",
447 __func__, path);
448 continue;
449 }
450
451 /* Make sure the node we found is actually in our list! */
452 found = -1;
453 for (j = 0; j < count; j++)
454 if (nodes[j] == node) {
455 found = j;
456 break;
457 }
458
459 if (found == -1) {
460 debug("%s: warning: alias '%s' points to a node "
461 "'%s' that is missing or is not compatible "
462 " with '%s'\n", __func__, path,
463 fdt_get_name(blob, node, NULL),
464 compat_names[id]);
465 continue;
466 }
467
468 /*
469 * Add this node to our list in the right place, and mark
470 * it as done.
471 */
472 if (fdtdec_get_is_enabled(blob, node)) {
Simon Glass1f772662012-02-03 15:13:53 +0000473 if (node_list[number]) {
474 debug("%s: warning: alias '%s' requires that "
475 "a node be placed in the list in a "
476 "position which is already filled by "
477 "node '%s'\n", __func__, path,
478 fdt_get_name(blob, node, NULL));
479 continue;
480 }
Simon Glassb022ead2012-01-17 08:20:50 +0000481 node_list[number] = node;
482 if (number >= num_found)
483 num_found = number + 1;
484 }
Simon Glass1f772662012-02-03 15:13:53 +0000485 nodes[found] = 0;
Simon Glassb022ead2012-01-17 08:20:50 +0000486 }
487
488 /* Add any nodes not mentioned by an alias */
489 for (i = j = 0; i < maxcount; i++) {
490 if (!node_list[i]) {
491 for (; j < maxcount; j++)
492 if (nodes[j] &&
493 fdtdec_get_is_enabled(blob, nodes[j]))
494 break;
495
496 /* Have we run out of nodes to add? */
497 if (j == maxcount)
498 break;
499
500 assert(!node_list[i]);
501 node_list[i] = nodes[j++];
502 if (i >= num_found)
503 num_found = i + 1;
504 }
505 }
506
507 return num_found;
508}
509
Simon Glass9908ad42014-07-23 06:55:09 -0600510int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
511 int *seqp)
512{
513 int base_len = strlen(base);
514 const char *find_name;
515 int find_namelen;
516 int prop_offset;
517 int aliases;
518
519 find_name = fdt_get_name(blob, offset, &find_namelen);
520 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
521
522 aliases = fdt_path_offset(blob, "/aliases");
523 for (prop_offset = fdt_first_property_offset(blob, aliases);
524 prop_offset > 0;
525 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
526 const char *prop;
527 const char *name;
528 const char *slash;
Simon Glass4aaa4602015-06-23 15:39:08 -0600529 int len, val;
Simon Glass9908ad42014-07-23 06:55:09 -0600530
531 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
532 debug(" - %s, %s\n", name, prop);
533 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
534 strncmp(name, base, base_len))
535 continue;
536
537 slash = strrchr(prop, '/');
538 if (strcmp(slash + 1, find_name))
539 continue;
Simon Glass4aaa4602015-06-23 15:39:08 -0600540 val = trailing_strtol(name);
541 if (val != -1) {
542 *seqp = val;
543 debug("Found seq %d\n", *seqp);
544 return 0;
Simon Glass9908ad42014-07-23 06:55:09 -0600545 }
546 }
547
548 debug("Not found\n");
549 return -ENOENT;
550}
551
Simon Glass088dccb2015-10-17 19:41:14 -0600552const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
Simon Glass1e374fb2014-09-04 16:27:24 -0600553{
Simon Glass1e374fb2014-09-04 16:27:24 -0600554 int chosen_node;
Simon Glass1e374fb2014-09-04 16:27:24 -0600555
556 if (!blob)
Simon Glass088dccb2015-10-17 19:41:14 -0600557 return NULL;
Simon Glass1e374fb2014-09-04 16:27:24 -0600558 chosen_node = fdt_path_offset(blob, "/chosen");
Simon Glass088dccb2015-10-17 19:41:14 -0600559 return fdt_getprop(blob, chosen_node, name, NULL);
560}
561
562int fdtdec_get_chosen_node(const void *blob, const char *name)
563{
564 const char *prop;
565
566 prop = fdtdec_get_chosen_prop(blob, name);
Simon Glass1e374fb2014-09-04 16:27:24 -0600567 if (!prop)
568 return -FDT_ERR_NOTFOUND;
569 return fdt_path_offset(blob, prop);
570}
571
Simon Glass1691f692012-03-28 10:08:24 +0000572int fdtdec_check_fdt(void)
573{
574 /*
575 * We must have an FDT, but we cannot panic() yet since the console
576 * is not ready. So for now, just assert(). Boards which need an early
577 * FDT (prior to console ready) will need to make their own
578 * arrangements and do their own checks.
579 */
580 assert(!fdtdec_prepare_fdt());
581 return 0;
582}
583
Simon Glass2d2af852011-10-24 19:15:32 +0000584/*
585 * This function is a little odd in that it accesses global data. At some
586 * point if the architecture board.c files merge this will make more sense.
587 * Even now, it is common code.
588 */
Simon Glass1691f692012-03-28 10:08:24 +0000589int fdtdec_prepare_fdt(void)
Simon Glass2d2af852011-10-24 19:15:32 +0000590{
Simon Glass71136852013-04-20 08:42:46 +0000591 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
592 fdt_check_header(gd->fdt_blob)) {
Simon Glass509dbf92015-02-27 22:06:32 -0700593#ifdef CONFIG_SPL_BUILD
594 puts("Missing DTB\n");
595#else
596 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 Glass63884ec2015-06-23 15:39:09 -0600597# ifdef DEBUG
598 if (gd->fdt_blob) {
599 printf("fdt_blob=%p\n", gd->fdt_blob);
600 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
601 32, 0);
602 }
603# endif
Simon Glass509dbf92015-02-27 22:06:32 -0700604#endif
Simon Glass1691f692012-03-28 10:08:24 +0000605 return -1;
606 }
Simon Glass2d2af852011-10-24 19:15:32 +0000607 return 0;
608}
Simon Glassc4697362012-02-27 10:52:35 +0000609
610int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
611{
612 const u32 *phandle;
613 int lookup;
614
Simon Glassc8c86dd2012-07-12 05:25:01 +0000615 debug("%s: %s\n", __func__, prop_name);
Simon Glassc4697362012-02-27 10:52:35 +0000616 phandle = fdt_getprop(blob, node, prop_name, NULL);
617 if (!phandle)
618 return -FDT_ERR_NOTFOUND;
619
620 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
621 return lookup;
622}
623
624/**
625 * Look up a property in a node and check that it has a minimum length.
626 *
627 * @param blob FDT blob
628 * @param node node to examine
629 * @param prop_name name of property to find
630 * @param min_len minimum property length in bytes
631 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
632 found, or -FDT_ERR_BADLAYOUT if not enough data
633 * @return pointer to cell, which is only valid if err == 0
634 */
635static const void *get_prop_check_min_len(const void *blob, int node,
636 const char *prop_name, int min_len, int *err)
637{
638 const void *cell;
639 int len;
640
641 debug("%s: %s\n", __func__, prop_name);
642 cell = fdt_getprop(blob, node, prop_name, &len);
643 if (!cell)
644 *err = -FDT_ERR_NOTFOUND;
645 else if (len < min_len)
646 *err = -FDT_ERR_BADLAYOUT;
647 else
648 *err = 0;
649 return cell;
650}
651
652int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
653 u32 *array, int count)
654{
655 const u32 *cell;
656 int i, err = 0;
657
658 debug("%s: %s\n", __func__, prop_name);
659 cell = get_prop_check_min_len(blob, node, prop_name,
660 sizeof(u32) * count, &err);
661 if (!err) {
662 for (i = 0; i < count; i++)
663 array[i] = fdt32_to_cpu(cell[i]);
664 }
665 return err;
666}
667
Simon Glasseda0c3f2014-11-10 18:00:19 -0700668int fdtdec_get_int_array_count(const void *blob, int node,
669 const char *prop_name, u32 *array, int count)
670{
671 const u32 *cell;
672 int len, elems;
673 int i;
674
675 debug("%s: %s\n", __func__, prop_name);
676 cell = fdt_getprop(blob, node, prop_name, &len);
677 if (!cell)
678 return -FDT_ERR_NOTFOUND;
679 elems = len / sizeof(u32);
680 if (count > elems)
681 count = elems;
682 for (i = 0; i < count; i++)
683 array[i] = fdt32_to_cpu(cell[i]);
684
685 return count;
686}
687
Simon Glass744ec232012-04-02 13:18:41 +0000688const u32 *fdtdec_locate_array(const void *blob, int node,
689 const char *prop_name, int count)
690{
691 const u32 *cell;
692 int err;
693
694 cell = get_prop_check_min_len(blob, node, prop_name,
695 sizeof(u32) * count, &err);
696 return err ? NULL : cell;
697}
698
Simon Glassc4697362012-02-27 10:52:35 +0000699int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
700{
701 const s32 *cell;
702 int len;
703
704 debug("%s: %s\n", __func__, prop_name);
705 cell = fdt_getprop(blob, node, prop_name, &len);
706 return cell != NULL;
707}
Simon Glass0d83c4d2012-02-27 10:52:36 +0000708
Simon Glassb491e9c2015-01-05 20:05:26 -0700709int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
710 const char *list_name,
711 const char *cells_name,
712 int cell_count, int index,
713 struct fdtdec_phandle_args *out_args)
714{
715 const __be32 *list, *list_end;
716 int rc = 0, size, cur_index = 0;
717 uint32_t count = 0;
718 int node = -1;
719 int phandle;
720
721 /* Retrieve the phandle list property */
722 list = fdt_getprop(blob, src_node, list_name, &size);
723 if (!list)
724 return -ENOENT;
725 list_end = list + size / sizeof(*list);
726
727 /* Loop over the phandles until all the requested entry is found */
728 while (list < list_end) {
729 rc = -EINVAL;
730 count = 0;
731
732 /*
733 * If phandle is 0, then it is an empty entry with no
734 * arguments. Skip forward to the next entry.
735 */
736 phandle = be32_to_cpup(list++);
737 if (phandle) {
738 /*
739 * Find the provider node and parse the #*-cells
740 * property to determine the argument length.
741 *
742 * This is not needed if the cell count is hard-coded
743 * (i.e. cells_name not set, but cell_count is set),
744 * except when we're going to return the found node
745 * below.
746 */
747 if (cells_name || cur_index == index) {
748 node = fdt_node_offset_by_phandle(blob,
749 phandle);
750 if (!node) {
751 debug("%s: could not find phandle\n",
752 fdt_get_name(blob, src_node,
753 NULL));
754 goto err;
755 }
756 }
757
758 if (cells_name) {
759 count = fdtdec_get_int(blob, node, cells_name,
760 -1);
761 if (count == -1) {
762 debug("%s: could not get %s for %s\n",
763 fdt_get_name(blob, src_node,
764 NULL),
765 cells_name,
766 fdt_get_name(blob, node,
767 NULL));
768 goto err;
769 }
770 } else {
771 count = cell_count;
772 }
773
774 /*
775 * Make sure that the arguments actually fit in the
776 * remaining property data length
777 */
778 if (list + count > list_end) {
779 debug("%s: arguments longer than property\n",
780 fdt_get_name(blob, src_node, NULL));
781 goto err;
782 }
783 }
784
785 /*
786 * All of the error cases above bail out of the loop, so at
787 * this point, the parsing is successful. If the requested
788 * index matches, then fill the out_args structure and return,
789 * or return -ENOENT for an empty entry.
790 */
791 rc = -ENOENT;
792 if (cur_index == index) {
793 if (!phandle)
794 goto err;
795
796 if (out_args) {
797 int i;
798
799 if (count > MAX_PHANDLE_ARGS) {
800 debug("%s: too many arguments %d\n",
801 fdt_get_name(blob, src_node,
802 NULL), count);
803 count = MAX_PHANDLE_ARGS;
804 }
805 out_args->node = node;
806 out_args->args_count = count;
807 for (i = 0; i < count; i++) {
808 out_args->args[i] =
809 be32_to_cpup(list++);
810 }
811 }
812
813 /* Found it! return success */
814 return 0;
815 }
816
817 node = -1;
818 list += count;
819 cur_index++;
820 }
821
822 /*
823 * Result will be one of:
824 * -ENOENT : index is for empty phandle
825 * -EINVAL : parsing error on data
826 * [1..n] : Number of phandle (count mode; when index = -1)
827 */
828 rc = index < 0 ? cur_index : -ENOENT;
829 err:
830 return rc;
831}
832
Peng Fan23dd3a02016-02-01 13:31:15 +0800833int fdtdec_get_child_count(const void *blob, int node)
834{
835 int subnode;
836 int num = 0;
837
838 fdt_for_each_subnode(blob, subnode, node)
839 num++;
840
841 return num;
842}
843
Anton Stafff2305ec2012-04-17 09:01:28 +0000844int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
845 u8 *array, int count)
846{
847 const u8 *cell;
848 int err;
849
850 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
851 if (!err)
852 memcpy(array, cell, count);
853 return err;
854}
855
856const u8 *fdtdec_locate_byte_array(const void *blob, int node,
857 const char *prop_name, int count)
858{
859 const u8 *cell;
860 int err;
861
862 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
863 if (err)
864 return NULL;
865 return cell;
866}
Abhilash Kesavan67217af2012-10-25 16:30:58 +0000867
Abhilash Kesavan67217af2012-10-25 16:30:58 +0000868int fdtdec_get_config_int(const void *blob, const char *prop_name,
869 int default_val)
870{
871 int config_node;
872
873 debug("%s: %s\n", __func__, prop_name);
874 config_node = fdt_path_offset(blob, "/config");
875 if (config_node < 0)
876 return default_val;
877 return fdtdec_get_int(blob, config_node, prop_name, default_val);
878}
Simon Glassb0494472012-10-25 16:30:59 +0000879
Gabe Black3e1c1512012-10-25 16:31:04 +0000880int fdtdec_get_config_bool(const void *blob, const char *prop_name)
881{
882 int config_node;
883 const void *prop;
884
885 debug("%s: %s\n", __func__, prop_name);
886 config_node = fdt_path_offset(blob, "/config");
887 if (config_node < 0)
888 return 0;
889 prop = fdt_get_property(blob, config_node, prop_name, NULL);
890
891 return prop != NULL;
892}
893
Simon Glassb0494472012-10-25 16:30:59 +0000894char *fdtdec_get_config_string(const void *blob, const char *prop_name)
895{
896 const char *nodep;
897 int nodeoffset;
898 int len;
899
900 debug("%s: %s\n", __func__, prop_name);
901 nodeoffset = fdt_path_offset(blob, "/config");
902 if (nodeoffset < 0)
903 return NULL;
904
905 nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
906 if (!nodep)
907 return NULL;
908
909 return (char *)nodep;
910}
Simon Glassf909b9c2012-10-25 16:31:00 +0000911
Simon Glassa28f8ba2014-10-23 18:58:51 -0600912int fdtdec_decode_region(const void *blob, int node, const char *prop_name,
913 fdt_addr_t *basep, fdt_size_t *sizep)
Simon Glassf909b9c2012-10-25 16:31:00 +0000914{
915 const fdt_addr_t *cell;
916 int len;
917
Simon Glassa28f8ba2014-10-23 18:58:51 -0600918 debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL),
919 prop_name);
Simon Glassf909b9c2012-10-25 16:31:00 +0000920 cell = fdt_getprop(blob, node, prop_name, &len);
Simon Glassa28f8ba2014-10-23 18:58:51 -0600921 if (!cell || (len < sizeof(fdt_addr_t) * 2)) {
922 debug("cell=%p, len=%d\n", cell, len);
Simon Glassf909b9c2012-10-25 16:31:00 +0000923 return -1;
Simon Glassa28f8ba2014-10-23 18:58:51 -0600924 }
925
926 *basep = fdt_addr_to_cpu(*cell);
927 *sizep = fdt_size_to_cpu(cell[1]);
928 debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep,
929 (ulong)*sizep);
Simon Glassf909b9c2012-10-25 16:31:00 +0000930
Simon Glassf909b9c2012-10-25 16:31:00 +0000931 return 0;
932}
Simon Glass9f783722014-02-27 13:26:01 -0700933
934/**
935 * Read a flash entry from the fdt
936 *
937 * @param blob FDT blob
938 * @param node Offset of node to read
939 * @param name Name of node being read
940 * @param entry Place to put offset and size of this node
941 * @return 0 if ok, -ve on error
942 */
943int fdtdec_read_fmap_entry(const void *blob, int node, const char *name,
944 struct fmap_entry *entry)
945{
Simon Glassf5e141f2014-10-23 18:58:52 -0600946 const char *prop;
Simon Glass9f783722014-02-27 13:26:01 -0700947 u32 reg[2];
948
949 if (fdtdec_get_int_array(blob, node, "reg", reg, 2)) {
950 debug("Node '%s' has bad/missing 'reg' property\n", name);
951 return -FDT_ERR_NOTFOUND;
952 }
953 entry->offset = reg[0];
954 entry->length = reg[1];
Simon Glassf5e141f2014-10-23 18:58:52 -0600955 entry->used = fdtdec_get_int(blob, node, "used", entry->length);
956 prop = fdt_getprop(blob, node, "compress", NULL);
957 entry->compress_algo = prop && !strcmp(prop, "lzo") ?
958 FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE;
959 prop = fdt_getprop(blob, node, "hash", &entry->hash_size);
960 entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE;
961 entry->hash = (uint8_t *)prop;
Simon Glass9f783722014-02-27 13:26:01 -0700962
963 return 0;
964}
Thierry Redinga937b802014-08-26 17:33:53 +0200965
Simon Glass9ffbe332015-03-05 12:25:14 -0700966u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
Thierry Redinga937b802014-08-26 17:33:53 +0200967{
968 u64 number = 0;
969
970 while (cells--)
971 number = (number << 32) | fdt32_to_cpu(*ptr++);
972
973 return number;
974}
975
976int fdt_get_resource(const void *fdt, int node, const char *property,
977 unsigned int index, struct fdt_resource *res)
978{
979 const fdt32_t *ptr, *end;
980 int na, ns, len, parent;
981 unsigned int i = 0;
982
983 parent = fdt_parent_offset(fdt, node);
984 if (parent < 0)
985 return parent;
986
987 na = fdt_address_cells(fdt, parent);
988 ns = fdt_size_cells(fdt, parent);
989
990 ptr = fdt_getprop(fdt, node, property, &len);
991 if (!ptr)
992 return len;
993
994 end = ptr + len / sizeof(*ptr);
995
996 while (ptr + na + ns <= end) {
997 if (i == index) {
998 res->start = res->end = fdtdec_get_number(ptr, na);
999 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
1000 return 0;
1001 }
1002
1003 ptr += na + ns;
1004 i++;
1005 }
1006
1007 return -FDT_ERR_NOTFOUND;
1008}
1009
1010int fdt_get_named_resource(const void *fdt, int node, const char *property,
1011 const char *prop_names, const char *name,
1012 struct fdt_resource *res)
1013{
1014 int index;
1015
1016 index = fdt_find_string(fdt, node, prop_names, name);
1017 if (index < 0)
1018 return index;
1019
1020 return fdt_get_resource(fdt, node, property, index, res);
1021}
Thierry Reding24856312014-08-26 17:33:54 +02001022
Simon Glass68941862014-10-23 18:58:56 -06001023int fdtdec_decode_memory_region(const void *blob, int config_node,
1024 const char *mem_type, const char *suffix,
1025 fdt_addr_t *basep, fdt_size_t *sizep)
1026{
1027 char prop_name[50];
1028 const char *mem;
1029 fdt_size_t size, offset_size;
1030 fdt_addr_t base, offset;
1031 int node;
1032
1033 if (config_node == -1) {
1034 config_node = fdt_path_offset(blob, "/config");
1035 if (config_node < 0) {
1036 debug("%s: Cannot find /config node\n", __func__);
1037 return -ENOENT;
1038 }
1039 }
1040 if (!suffix)
1041 suffix = "";
1042
1043 snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type,
1044 suffix);
1045 mem = fdt_getprop(blob, config_node, prop_name, NULL);
1046 if (!mem) {
1047 debug("%s: No memory type for '%s', using /memory\n", __func__,
1048 prop_name);
1049 mem = "/memory";
1050 }
1051
1052 node = fdt_path_offset(blob, mem);
1053 if (node < 0) {
1054 debug("%s: Failed to find node '%s': %s\n", __func__, mem,
1055 fdt_strerror(node));
1056 return -ENOENT;
1057 }
1058
1059 /*
1060 * Not strictly correct - the memory may have multiple banks. We just
1061 * use the first
1062 */
1063 if (fdtdec_decode_region(blob, node, "reg", &base, &size)) {
1064 debug("%s: Failed to decode memory region %s\n", __func__,
1065 mem);
1066 return -EINVAL;
1067 }
1068
1069 snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type,
1070 suffix);
1071 if (fdtdec_decode_region(blob, config_node, prop_name, &offset,
1072 &offset_size)) {
1073 debug("%s: Failed to decode memory region '%s'\n", __func__,
1074 prop_name);
1075 return -EINVAL;
1076 }
1077
1078 *basep = base + offset;
1079 *sizep = offset_size;
1080
1081 return 0;
1082}
Simon Glass26b78b22015-02-27 22:06:34 -07001083
Simon Glassb24e8642015-04-14 21:03:21 -06001084static int decode_timing_property(const void *blob, int node, const char *name,
1085 struct timing_entry *result)
1086{
1087 int length, ret = 0;
1088 const u32 *prop;
1089
1090 prop = fdt_getprop(blob, node, name, &length);
1091 if (!prop) {
1092 debug("%s: could not find property %s\n",
1093 fdt_get_name(blob, node, NULL), name);
1094 return length;
1095 }
1096
1097 if (length == sizeof(u32)) {
1098 result->typ = fdtdec_get_int(blob, node, name, 0);
1099 result->min = result->typ;
1100 result->max = result->typ;
1101 } else {
1102 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
1103 }
1104
1105 return ret;
1106}
1107
1108int fdtdec_decode_display_timing(const void *blob, int parent, int index,
1109 struct display_timing *dt)
1110{
1111 int i, node, timings_node;
1112 u32 val = 0;
1113 int ret = 0;
1114
1115 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
1116 if (timings_node < 0)
1117 return timings_node;
1118
1119 for (i = 0, node = fdt_first_subnode(blob, timings_node);
1120 node > 0 && i != index;
1121 node = fdt_next_subnode(blob, node))
1122 i++;
1123
1124 if (node < 0)
1125 return node;
1126
1127 memset(dt, 0, sizeof(*dt));
1128
1129 ret |= decode_timing_property(blob, node, "hback-porch",
1130 &dt->hback_porch);
1131 ret |= decode_timing_property(blob, node, "hfront-porch",
1132 &dt->hfront_porch);
1133 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
1134 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
1135 ret |= decode_timing_property(blob, node, "vback-porch",
1136 &dt->vback_porch);
1137 ret |= decode_timing_property(blob, node, "vfront-porch",
1138 &dt->vfront_porch);
1139 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
1140 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
1141 ret |= decode_timing_property(blob, node, "clock-frequency",
1142 &dt->pixelclock);
1143
1144 dt->flags = 0;
1145 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1146 if (val != -1) {
1147 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1148 DISPLAY_FLAGS_VSYNC_LOW;
1149 }
1150 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1151 if (val != -1) {
1152 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1153 DISPLAY_FLAGS_HSYNC_LOW;
1154 }
1155 val = fdtdec_get_int(blob, node, "de-active", -1);
1156 if (val != -1) {
1157 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1158 DISPLAY_FLAGS_DE_LOW;
1159 }
1160 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1161 if (val != -1) {
1162 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1163 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1164 }
1165
1166 if (fdtdec_get_bool(blob, node, "interlaced"))
1167 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1168 if (fdtdec_get_bool(blob, node, "doublescan"))
1169 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1170 if (fdtdec_get_bool(blob, node, "doubleclk"))
1171 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1172
1173 return 0;
1174}
1175
Simon Glassa0877672015-02-27 22:06:35 -07001176int fdtdec_setup(void)
Simon Glass26b78b22015-02-27 22:06:34 -07001177{
Masahiro Yamada366b24f2015-08-12 07:31:55 +09001178#if CONFIG_IS_ENABLED(OF_CONTROL)
Simon Glass26b78b22015-02-27 22:06:34 -07001179# ifdef CONFIG_OF_EMBED
1180 /* Get a pointer to the FDT */
1181 gd->fdt_blob = __dtb_dt_begin;
1182# elif defined CONFIG_OF_SEPARATE
1183# ifdef CONFIG_SPL_BUILD
Simon Glass77ec34e2015-10-17 19:41:19 -06001184 /* FDT is at end of BSS unless it is in a different memory region */
1185 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
1186 gd->fdt_blob = (ulong *)&_image_binary_end;
1187 else
1188 gd->fdt_blob = (ulong *)&__bss_end;
Simon Glass26b78b22015-02-27 22:06:34 -07001189# else
1190 /* FDT is at end of image */
1191 gd->fdt_blob = (ulong *)&_end;
Masahiro Yamada6cd571b2015-08-01 16:03:25 +09001192# endif
Simon Glass26b78b22015-02-27 22:06:34 -07001193# elif defined(CONFIG_OF_HOSTFILE)
1194 if (sandbox_read_fdt_from_file()) {
1195 puts("Failed to read control FDT\n");
1196 return -1;
1197 }
1198# endif
1199# ifndef CONFIG_SPL_BUILD
1200 /* Allow the early environment to override the fdt address */
1201 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
1202 (uintptr_t)gd->fdt_blob);
1203# endif
Heiko Schocherd7b42322014-03-03 12:19:30 +01001204#endif
Simon Glassa0877672015-02-27 22:06:35 -07001205 return fdtdec_prepare_fdt();
Simon Glass26b78b22015-02-27 22:06:34 -07001206}
1207
1208#endif /* !USE_HOSTCC */