blob: b2017872fae679bcf3b6d0629dd4f72141f34d11 [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 Glass5c33c9f2014-07-23 06:55:09 -06008#include <errno.h>
Simon Glassb5220bc2011-10-24 19:15:32 +00009#include <serial.h>
10#include <libfdt.h>
11#include <fdtdec.h>
Simon Glassb45122f2015-02-27 22:06:34 -070012#include <asm/sections.h>
Simon Glass5c33c9f2014-07-23 06:55:09 -060013#include <linux/ctype.h>
Simon Glassb5220bc2011-10-24 19:15:32 +000014
15DECLARE_GLOBAL_DATA_PTR;
16
17/*
18 * Here are the type we know about. One day we might allow drivers to
19 * register. For now we just put them here. The COMPAT macro allows us to
20 * turn this into a sparse list later, and keeps the ID with the name.
21 */
22#define COMPAT(id, name) name
23static const char * const compat_names[COMPAT_COUNT] = {
Simon Glassf88fe2d2012-02-27 10:52:34 +000024 COMPAT(UNKNOWN, "<none>"),
Jimmy Zhang0e35ad02012-04-02 13:18:52 +000025 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
26 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
Rakesh Iyer6642a682012-04-17 09:01:35 +000027 COMPAT(NVIDIA_TEGRA20_KBC, "nvidia,tegra20-kbc"),
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_DC, "nvidia,tegra124-dc"),
31 COMPAT(NVIDIA_TEGRA124_SOR, "nvidia,tegra124-sor"),
32 COMPAT(NVIDIA_TEGRA124_PMC, "nvidia,tegra124-pmc"),
Wei Ni87540de2012-10-17 13:24:50 +000033 COMPAT(NVIDIA_TEGRA20_DC, "nvidia,tegra20-dc"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070034 COMPAT(NVIDIA_TEGRA210_SDMMC, "nvidia,tegra210-sdhci"),
Stephen Warrena73ca472014-01-24 12:46:06 -070035 COMPAT(NVIDIA_TEGRA124_SDMMC, "nvidia,tegra124-sdhci"),
Tom Warrenf4e4e0b2013-03-04 14:07:18 -070036 COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"),
Tom Warrenc9aa8312013-02-21 12:31:30 +000037 COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"),
Thierry Redingf3158282014-12-09 22:25:12 -070038 COMPAT(NVIDIA_TEGRA124_PCIE, "nvidia,tegra124-pcie"),
39 COMPAT(NVIDIA_TEGRA30_PCIE, "nvidia,tegra30-pcie"),
40 COMPAT(NVIDIA_TEGRA20_PCIE, "nvidia,tegra20-pcie"),
Thierry Reding79c7a902014-12-09 22:25:09 -070041 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070042 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
Hatim RVcc9fe332012-12-11 00:52:46 +000043 COMPAT(SMSC_LAN9215, "smsc,lan9215"),
44 COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
Rajeshwari Shindec34253d2012-12-26 20:03:10 +000045 COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"),
Rajeshwari Shinde72dbff12012-12-26 20:03:16 +000046 COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"),
47 COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"),
Hung-ying Tyan713cb682013-05-15 18:27:32 +080048 COMPAT(GOOGLE_CROS_EC_KEYB, "google,cros-ec-keyb"),
Rajeshwari Shinde6abd1622013-01-07 23:35:05 +000049 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
Vivek Gautam108b85b2013-09-14 14:02:48 +053050 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
Akshay Saraswat618766c2013-02-25 01:13:01 +000051 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
Ajay Kumard7377b52013-02-21 23:53:00 +000052 COMPAT(SAMSUNG_EXYNOS_FIMD, "samsung,exynos-fimd"),
Piotr Wilczekde461c52014-03-07 14:59:39 +010053 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
Ajay Kumar1e4706a2013-02-21 23:53:05 +000054 COMPAT(SAMSUNG_EXYNOS5_DP, "samsung,exynos5-dp"),
Jaehoon Chung7d3ca0f2014-05-16 13:59:51 +090055 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
Piotr Wilczek3577fe82014-03-07 14:59:41 +010056 COMPAT(SAMSUNG_EXYNOS_MMC, "samsung,exynos-mmc"),
Rajeshwari Shindeee1e3c22013-06-24 16:47:20 +053057 COMPAT(SAMSUNG_EXYNOS_SERIAL, "samsung,exynos4210-uart"),
Przemyslaw Marczakf37df0f2015-04-20 20:07:45 +020058 COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686"),
Simon Glassbb8215f2013-03-11 06:08:08 +000059 COMPAT(GENERIC_SPI_FLASH, "spi-flash"),
Rajeshwari Shinde7772bb72013-02-14 19:46:15 +000060 COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"),
Rong Changf6267992013-04-12 10:44:57 +000061 COMPAT(INFINEON_SLB9635_TPM, "infineon,slb9635-tpm"),
Simon Glassf0e57b12015-05-04 11:31:00 -060062 COMPAT(INFINEON_SLB9645_TPM, "infineon,slb9645tt"),
naveen krishna chatradhiecbd7e12013-04-29 15:58:52 -070063 COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"),
Simon Glass7d95f2a2014-02-27 13:26:19 -070064 COMPAT(SANDBOX_LCD_SDL, "sandbox,lcd-sdl"),
Ajay Kumar45c480c2014-09-05 16:53:33 +053065 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
Simon Glass77f9b1f2014-11-12 22:42:21 -070066 COMPAT(INTEL_MICROCODE, "intel,microcode"),
Simon Glass65dd74a2014-11-12 22:42:28 -070067 COMPAT(MEMORY_SPD, "memory-spd"),
Simon Glass3ac83932014-11-14 18:18:38 -070068 COMPAT(INTEL_PANTHERPOINT_AHCI, "intel,pantherpoint-ahci"),
Simon Glassbb80be32014-11-24 21:18:16 -070069 COMPAT(INTEL_MODEL_206AX, "intel,model-206ax"),
Simon Glasseffcf062014-11-14 20:56:36 -070070 COMPAT(INTEL_GMA, "intel,gma"),
Thierry Reding6173c452014-12-09 22:25:05 -070071 COMPAT(AMS_AS3722, "ams,as3722"),
Simon Glass5da38082015-01-19 22:16:06 -070072 COMPAT(INTEL_ICH_SPI, "intel,ich-spi"),
Bin Mengc89ada02015-02-05 23:42:26 +080073 COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
Gabriel Huau5318f182015-05-25 22:27:37 -070074 COMPAT(INTEL_X86_PINCTRL, "intel,x86-pinctrl"),
Masahiro Yamada6462cde2015-03-11 15:54:46 +090075 COMPAT(SOCIONEXT_XHCI, "socionext,uniphier-xhci"),
Simon Glass90b16d12015-03-26 09:29:29 -060076 COMPAT(COMPAT_INTEL_PCH, "intel,bd82x6x"),
Bin Meng9c7dea62015-05-25 22:35:04 +080077 COMPAT(COMPAT_INTEL_IRQ_ROUTER, "intel,irq-router"),
Marek Vasut6ab00db2015-07-25 19:33:56 +020078 COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
Simon Glassb5220bc2011-10-24 19:15:32 +000079};
80
Simon Glassa53f4a22012-01-17 08:20:50 +000081const char *fdtdec_get_compatible(enum fdt_compat_id id)
82{
83 /* We allow reading of the 'unknown' ID for testing purposes */
84 assert(id >= 0 && id < COMPAT_COUNT);
85 return compat_names[id];
86}
87
Simon Glass4397a2a2013-03-19 04:58:51 +000088fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
89 const char *prop_name, fdt_size_t *sizep)
Simon Glassb5220bc2011-10-24 19:15:32 +000090{
Thierry Reding5b344362015-07-23 10:51:30 -060091 const fdt32_t *ptr, *end;
92 int parent, na, ns, len;
93 fdt_addr_t addr;
Simon Glassb5220bc2011-10-24 19:15:32 +000094
Simon Glass1cb23232012-07-12 05:25:01 +000095 debug("%s: %s: ", __func__, prop_name);
Simon Glass1cb23232012-07-12 05:25:01 +000096
Thierry Reding5b344362015-07-23 10:51:30 -060097 parent = fdt_parent_offset(blob, node);
98 if (parent < 0) {
99 debug("(no parent found)\n");
100 return FDT_ADDR_T_NONE;
Simon Glass1cb23232012-07-12 05:25:01 +0000101 }
Thierry Reding5b344362015-07-23 10:51:30 -0600102
103 na = fdt_address_cells(blob, parent);
104 ns = fdt_size_cells(blob, parent);
105
106 ptr = fdt_getprop(blob, node, prop_name, &len);
107 if (!ptr) {
108 debug("(not found)\n");
109 return FDT_ADDR_T_NONE;
110 }
111
112 end = ptr + len / sizeof(*ptr);
113
114 if (ptr + na + ns > end) {
115 debug("(not enough data: expected %d bytes, got %d bytes)\n",
116 (na + ns) * 4, len);
117 return FDT_ADDR_T_NONE;
118 }
119
120 addr = fdtdec_get_number(ptr, na);
121
122 if (sizep) {
123 *sizep = fdtdec_get_number(ptr + na, ns);
124 debug("addr=%pa, size=%pa\n", &addr, sizep);
125 } else {
126 debug("%pa\n", &addr);
127 }
128
129 return addr;
Simon Glassb5220bc2011-10-24 19:15:32 +0000130}
131
Simon Glass4397a2a2013-03-19 04:58:51 +0000132fdt_addr_t fdtdec_get_addr(const void *blob, int node,
133 const char *prop_name)
134{
135 return fdtdec_get_addr_size(blob, node, prop_name, NULL);
136}
137
Bin Menga62e84d2014-12-31 16:05:11 +0800138#ifdef CONFIG_PCI
139int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type,
140 const char *prop_name, struct fdt_pci_addr *addr)
141{
142 const u32 *cell;
143 int len;
144 int ret = -ENOENT;
145
146 debug("%s: %s: ", __func__, prop_name);
147
148 /*
149 * If we follow the pci bus bindings strictly, we should check
150 * the value of the node's parent node's #address-cells and
151 * #size-cells. They need to be 3 and 2 accordingly. However,
152 * for simplicity we skip the check here.
153 */
154 cell = fdt_getprop(blob, node, prop_name, &len);
155 if (!cell)
156 goto fail;
157
158 if ((len % FDT_PCI_REG_SIZE) == 0) {
159 int num = len / FDT_PCI_REG_SIZE;
160 int i;
161
162 for (i = 0; i < num; i++) {
163 debug("pci address #%d: %08lx %08lx %08lx\n", i,
164 (ulong)fdt_addr_to_cpu(cell[0]),
165 (ulong)fdt_addr_to_cpu(cell[1]),
166 (ulong)fdt_addr_to_cpu(cell[2]));
167 if ((fdt_addr_to_cpu(*cell) & type) == type) {
168 addr->phys_hi = fdt_addr_to_cpu(cell[0]);
169 addr->phys_mid = fdt_addr_to_cpu(cell[1]);
170 addr->phys_lo = fdt_addr_to_cpu(cell[2]);
171 break;
172 } else {
173 cell += (FDT_PCI_ADDR_CELLS +
174 FDT_PCI_SIZE_CELLS);
175 }
176 }
177
Simon Glass106cce92015-03-05 12:25:19 -0700178 if (i == num) {
179 ret = -ENXIO;
Bin Menga62e84d2014-12-31 16:05:11 +0800180 goto fail;
Simon Glass106cce92015-03-05 12:25:19 -0700181 }
Bin Menga62e84d2014-12-31 16:05:11 +0800182
183 return 0;
184 } else {
185 ret = -EINVAL;
186 }
187
188fail:
189 debug("(not found)\n");
190 return ret;
191}
192
193int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
194{
195 const char *list, *end;
196 int len;
197
198 list = fdt_getprop(blob, node, "compatible", &len);
199 if (!list)
200 return -ENOENT;
201
202 end = list + len;
203 while (list < end) {
204 char *s;
205
206 len = strlen(list);
207 if (len >= strlen("pciVVVV,DDDD")) {
208 s = strstr(list, "pci");
209
210 /*
211 * check if the string is something like pciVVVV,DDDD.RR
212 * or just pciVVVV,DDDD
213 */
214 if (s && s[7] == ',' &&
215 (s[12] == '.' || s[12] == 0)) {
216 s += 3;
217 *vendor = simple_strtol(s, NULL, 16);
218
219 s += 5;
220 *device = simple_strtol(s, NULL, 16);
221
222 return 0;
223 }
224 } else {
225 list += (len + 1);
226 }
227 }
228
229 return -ENOENT;
230}
231
232int fdtdec_get_pci_bdf(const void *blob, int node,
233 struct fdt_pci_addr *addr, pci_dev_t *bdf)
234{
235 u16 dt_vendor, dt_device, vendor, device;
236 int ret;
237
238 /* get vendor id & device id from the compatible string */
239 ret = fdtdec_get_pci_vendev(blob, node, &dt_vendor, &dt_device);
240 if (ret)
241 return ret;
242
243 /* extract the bdf from fdt_pci_addr */
244 *bdf = addr->phys_hi & 0xffff00;
245
246 /* read vendor id & device id based on bdf */
247 pci_read_config_word(*bdf, PCI_VENDOR_ID, &vendor);
248 pci_read_config_word(*bdf, PCI_DEVICE_ID, &device);
249
250 /*
251 * Note there are two places in the device tree to fully describe
252 * a pci device: one is via compatible string with a format of
253 * "pciVVVV,DDDD" and the other one is the bdf numbers encoded in
254 * the device node's reg address property. We read the vendor id
255 * and device id based on bdf and compare the values with the
256 * "VVVV,DDDD". If they are the same, then we are good to use bdf
257 * to read device's bar. But if they are different, we have to rely
258 * on the vendor id and device id extracted from the compatible
259 * string and locate the real bdf by pci_find_device(). This is
260 * because normally we may only know device's device number and
261 * function number when writing device tree. The bus number is
262 * dynamically assigned during the pci enumeration process.
263 */
264 if ((dt_vendor != vendor) || (dt_device != device)) {
265 *bdf = pci_find_device(dt_vendor, dt_device, 0);
266 if (*bdf == -1)
267 return -ENODEV;
268 }
269
270 return 0;
271}
272
273int fdtdec_get_pci_bar32(const void *blob, int node,
274 struct fdt_pci_addr *addr, u32 *bar)
275{
276 pci_dev_t bdf;
277 int barnum;
278 int ret;
279
280 /* get pci devices's bdf */
281 ret = fdtdec_get_pci_bdf(blob, node, addr, &bdf);
282 if (ret)
283 return ret;
284
285 /* extract the bar number from fdt_pci_addr */
286 barnum = addr->phys_hi & 0xff;
287 if ((barnum < PCI_BASE_ADDRESS_0) || (barnum > PCI_CARDBUS_CIS))
288 return -EINVAL;
289
290 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
291 *bar = pci_read_bar32(pci_bus_to_hose(PCI_BUS(bdf)), bdf, barnum);
292
293 return 0;
294}
295#endif
296
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000297uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
298 uint64_t default_val)
299{
300 const uint64_t *cell64;
301 int length;
302
303 cell64 = fdt_getprop(blob, node, prop_name, &length);
304 if (!cell64 || length < sizeof(*cell64))
305 return default_val;
306
307 return fdt64_to_cpu(*cell64);
308}
309
Simon Glassf88fe2d2012-02-27 10:52:34 +0000310int fdtdec_get_is_enabled(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000311{
312 const char *cell;
313
Simon Glassf88fe2d2012-02-27 10:52:34 +0000314 /*
315 * It should say "okay", so only allow that. Some fdts use "ok" but
316 * this is a bug. Please fix your device tree source file. See here
317 * for discussion:
318 *
319 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
320 */
Simon Glassb5220bc2011-10-24 19:15:32 +0000321 cell = fdt_getprop(blob, node, "status", NULL);
322 if (cell)
Simon Glassf88fe2d2012-02-27 10:52:34 +0000323 return 0 == strcmp(cell, "okay");
324 return 1;
Simon Glassb5220bc2011-10-24 19:15:32 +0000325}
326
Gerald Van Baren7cde3972012-11-12 23:13:54 -0500327enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000328{
329 enum fdt_compat_id id;
330
331 /* Search our drivers */
332 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
333 if (0 == fdt_node_check_compatible(blob, node,
334 compat_names[id]))
335 return id;
336 return COMPAT_UNKNOWN;
337}
338
339int fdtdec_next_compatible(const void *blob, int node,
340 enum fdt_compat_id id)
341{
342 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
343}
344
Simon Glass3ddecfc2012-04-02 13:18:42 +0000345int fdtdec_next_compatible_subnode(const void *blob, int node,
346 enum fdt_compat_id id, int *depthp)
347{
348 do {
349 node = fdt_next_node(blob, node, depthp);
350 } while (*depthp > 1);
351
352 /* If this is a direct subnode, and compatible, return it */
353 if (*depthp == 1 && 0 == fdt_node_check_compatible(
354 blob, node, compat_names[id]))
355 return node;
356
357 return -FDT_ERR_NOTFOUND;
358}
359
Simon Glassb5220bc2011-10-24 19:15:32 +0000360int fdtdec_next_alias(const void *blob, const char *name,
361 enum fdt_compat_id id, int *upto)
362{
363#define MAX_STR_LEN 20
364 char str[MAX_STR_LEN + 20];
365 int node, err;
366
367 /* snprintf() is not available */
368 assert(strlen(name) < MAX_STR_LEN);
369 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
Simon Glass00878472012-10-31 14:02:42 +0000370 node = fdt_path_offset(blob, str);
Simon Glassb5220bc2011-10-24 19:15:32 +0000371 if (node < 0)
372 return node;
373 err = fdt_node_check_compatible(blob, node, compat_names[id]);
374 if (err < 0)
375 return err;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000376 if (err)
377 return -FDT_ERR_NOTFOUND;
378 (*upto)++;
379 return node;
Simon Glassb5220bc2011-10-24 19:15:32 +0000380}
381
Simon Glassa53f4a22012-01-17 08:20:50 +0000382int fdtdec_find_aliases_for_id(const void *blob, const char *name,
383 enum fdt_compat_id id, int *node_list, int maxcount)
384{
Simon Glassc6782272012-02-03 15:13:53 +0000385 memset(node_list, '\0', sizeof(*node_list) * maxcount);
386
387 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
388}
389
390/* TODO: Can we tighten this code up a little? */
391int fdtdec_add_aliases_for_id(const void *blob, const char *name,
392 enum fdt_compat_id id, int *node_list, int maxcount)
393{
Simon Glassa53f4a22012-01-17 08:20:50 +0000394 int name_len = strlen(name);
395 int nodes[maxcount];
396 int num_found = 0;
397 int offset, node;
398 int alias_node;
399 int count;
400 int i, j;
401
402 /* find the alias node if present */
403 alias_node = fdt_path_offset(blob, "/aliases");
404
405 /*
406 * start with nothing, and we can assume that the root node can't
407 * match
408 */
409 memset(nodes, '\0', sizeof(nodes));
410
411 /* First find all the compatible nodes */
412 for (node = count = 0; node >= 0 && count < maxcount;) {
413 node = fdtdec_next_compatible(blob, node, id);
414 if (node >= 0)
415 nodes[count++] = node;
416 }
417 if (node >= 0)
418 debug("%s: warning: maxcount exceeded with alias '%s'\n",
419 __func__, name);
420
421 /* Now find all the aliases */
Simon Glassa53f4a22012-01-17 08:20:50 +0000422 for (offset = fdt_first_property_offset(blob, alias_node);
423 offset > 0;
424 offset = fdt_next_property_offset(blob, offset)) {
425 const struct fdt_property *prop;
426 const char *path;
427 int number;
428 int found;
429
430 node = 0;
431 prop = fdt_get_property_by_offset(blob, offset, NULL);
432 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
433 if (prop->len && 0 == strncmp(path, name, name_len))
434 node = fdt_path_offset(blob, prop->data);
435 if (node <= 0)
436 continue;
437
438 /* Get the alias number */
439 number = simple_strtoul(path + name_len, NULL, 10);
440 if (number < 0 || number >= maxcount) {
441 debug("%s: warning: alias '%s' is out of range\n",
442 __func__, path);
443 continue;
444 }
445
446 /* Make sure the node we found is actually in our list! */
447 found = -1;
448 for (j = 0; j < count; j++)
449 if (nodes[j] == node) {
450 found = j;
451 break;
452 }
453
454 if (found == -1) {
455 debug("%s: warning: alias '%s' points to a node "
456 "'%s' that is missing or is not compatible "
457 " with '%s'\n", __func__, path,
458 fdt_get_name(blob, node, NULL),
459 compat_names[id]);
460 continue;
461 }
462
463 /*
464 * Add this node to our list in the right place, and mark
465 * it as done.
466 */
467 if (fdtdec_get_is_enabled(blob, node)) {
Simon Glassc6782272012-02-03 15:13:53 +0000468 if (node_list[number]) {
469 debug("%s: warning: alias '%s' requires that "
470 "a node be placed in the list in a "
471 "position which is already filled by "
472 "node '%s'\n", __func__, path,
473 fdt_get_name(blob, node, NULL));
474 continue;
475 }
Simon Glassa53f4a22012-01-17 08:20:50 +0000476 node_list[number] = node;
477 if (number >= num_found)
478 num_found = number + 1;
479 }
Simon Glassc6782272012-02-03 15:13:53 +0000480 nodes[found] = 0;
Simon Glassa53f4a22012-01-17 08:20:50 +0000481 }
482
483 /* Add any nodes not mentioned by an alias */
484 for (i = j = 0; i < maxcount; i++) {
485 if (!node_list[i]) {
486 for (; j < maxcount; j++)
487 if (nodes[j] &&
488 fdtdec_get_is_enabled(blob, nodes[j]))
489 break;
490
491 /* Have we run out of nodes to add? */
492 if (j == maxcount)
493 break;
494
495 assert(!node_list[i]);
496 node_list[i] = nodes[j++];
497 if (i >= num_found)
498 num_found = i + 1;
499 }
500 }
501
502 return num_found;
503}
504
Simon Glass5c33c9f2014-07-23 06:55:09 -0600505int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
506 int *seqp)
507{
508 int base_len = strlen(base);
509 const char *find_name;
510 int find_namelen;
511 int prop_offset;
512 int aliases;
513
514 find_name = fdt_get_name(blob, offset, &find_namelen);
515 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
516
517 aliases = fdt_path_offset(blob, "/aliases");
518 for (prop_offset = fdt_first_property_offset(blob, aliases);
519 prop_offset > 0;
520 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
521 const char *prop;
522 const char *name;
523 const char *slash;
Simon Glassc4af6732015-06-23 15:39:08 -0600524 int len, val;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600525
526 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
527 debug(" - %s, %s\n", name, prop);
528 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
529 strncmp(name, base, base_len))
530 continue;
531
532 slash = strrchr(prop, '/');
533 if (strcmp(slash + 1, find_name))
534 continue;
Simon Glassc4af6732015-06-23 15:39:08 -0600535 val = trailing_strtol(name);
536 if (val != -1) {
537 *seqp = val;
538 debug("Found seq %d\n", *seqp);
539 return 0;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600540 }
541 }
542
543 debug("Not found\n");
544 return -ENOENT;
545}
546
Simon Glassaac07d42014-09-04 16:27:24 -0600547int fdtdec_get_chosen_node(const void *blob, const char *name)
548{
549 const char *prop;
550 int chosen_node;
551 int len;
552
553 if (!blob)
554 return -FDT_ERR_NOTFOUND;
555 chosen_node = fdt_path_offset(blob, "/chosen");
556 prop = fdt_getprop(blob, chosen_node, name, &len);
557 if (!prop)
558 return -FDT_ERR_NOTFOUND;
559 return fdt_path_offset(blob, prop);
560}
561
Simon Glass9a263e52012-03-28 10:08:24 +0000562int fdtdec_check_fdt(void)
563{
564 /*
565 * We must have an FDT, but we cannot panic() yet since the console
566 * is not ready. So for now, just assert(). Boards which need an early
567 * FDT (prior to console ready) will need to make their own
568 * arrangements and do their own checks.
569 */
570 assert(!fdtdec_prepare_fdt());
571 return 0;
572}
573
Simon Glassb5220bc2011-10-24 19:15:32 +0000574/*
575 * This function is a little odd in that it accesses global data. At some
576 * point if the architecture board.c files merge this will make more sense.
577 * Even now, it is common code.
578 */
Simon Glass9a263e52012-03-28 10:08:24 +0000579int fdtdec_prepare_fdt(void)
Simon Glassb5220bc2011-10-24 19:15:32 +0000580{
Simon Glassc309c2d2013-04-20 08:42:46 +0000581 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
582 fdt_check_header(gd->fdt_blob)) {
Simon Glass66312372015-02-27 22:06:32 -0700583#ifdef CONFIG_SPL_BUILD
584 puts("Missing DTB\n");
585#else
586 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 -0600587# ifdef DEBUG
588 if (gd->fdt_blob) {
589 printf("fdt_blob=%p\n", gd->fdt_blob);
590 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
591 32, 0);
592 }
593# endif
Simon Glass66312372015-02-27 22:06:32 -0700594#endif
Simon Glass9a263e52012-03-28 10:08:24 +0000595 return -1;
596 }
Simon Glassb5220bc2011-10-24 19:15:32 +0000597 return 0;
598}
Simon Glassd17da652012-02-27 10:52:35 +0000599
600int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
601{
602 const u32 *phandle;
603 int lookup;
604
Simon Glass1cb23232012-07-12 05:25:01 +0000605 debug("%s: %s\n", __func__, prop_name);
Simon Glassd17da652012-02-27 10:52:35 +0000606 phandle = fdt_getprop(blob, node, prop_name, NULL);
607 if (!phandle)
608 return -FDT_ERR_NOTFOUND;
609
610 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
611 return lookup;
612}
613
614/**
615 * Look up a property in a node and check that it has a minimum length.
616 *
617 * @param blob FDT blob
618 * @param node node to examine
619 * @param prop_name name of property to find
620 * @param min_len minimum property length in bytes
621 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
622 found, or -FDT_ERR_BADLAYOUT if not enough data
623 * @return pointer to cell, which is only valid if err == 0
624 */
625static const void *get_prop_check_min_len(const void *blob, int node,
626 const char *prop_name, int min_len, int *err)
627{
628 const void *cell;
629 int len;
630
631 debug("%s: %s\n", __func__, prop_name);
632 cell = fdt_getprop(blob, node, prop_name, &len);
633 if (!cell)
634 *err = -FDT_ERR_NOTFOUND;
635 else if (len < min_len)
636 *err = -FDT_ERR_BADLAYOUT;
637 else
638 *err = 0;
639 return cell;
640}
641
642int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
643 u32 *array, int count)
644{
645 const u32 *cell;
646 int i, err = 0;
647
648 debug("%s: %s\n", __func__, prop_name);
649 cell = get_prop_check_min_len(blob, node, prop_name,
650 sizeof(u32) * count, &err);
651 if (!err) {
652 for (i = 0; i < count; i++)
653 array[i] = fdt32_to_cpu(cell[i]);
654 }
655 return err;
656}
657
Simon Glassa9f04d42014-11-10 18:00:19 -0700658int fdtdec_get_int_array_count(const void *blob, int node,
659 const char *prop_name, u32 *array, int count)
660{
661 const u32 *cell;
662 int len, elems;
663 int i;
664
665 debug("%s: %s\n", __func__, prop_name);
666 cell = fdt_getprop(blob, node, prop_name, &len);
667 if (!cell)
668 return -FDT_ERR_NOTFOUND;
669 elems = len / sizeof(u32);
670 if (count > elems)
671 count = elems;
672 for (i = 0; i < count; i++)
673 array[i] = fdt32_to_cpu(cell[i]);
674
675 return count;
676}
677
Simon Glass96875e72012-04-02 13:18:41 +0000678const u32 *fdtdec_locate_array(const void *blob, int node,
679 const char *prop_name, int count)
680{
681 const u32 *cell;
682 int err;
683
684 cell = get_prop_check_min_len(blob, node, prop_name,
685 sizeof(u32) * count, &err);
686 return err ? NULL : cell;
687}
688
Simon Glassd17da652012-02-27 10:52:35 +0000689int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
690{
691 const s32 *cell;
692 int len;
693
694 debug("%s: %s\n", __func__, prop_name);
695 cell = fdt_getprop(blob, node, prop_name, &len);
696 return cell != NULL;
697}
Simon Glassed3ee5c2012-02-27 10:52:36 +0000698
Simon Glass57068a72015-01-05 20:05:26 -0700699int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
700 const char *list_name,
701 const char *cells_name,
702 int cell_count, int index,
703 struct fdtdec_phandle_args *out_args)
704{
705 const __be32 *list, *list_end;
706 int rc = 0, size, cur_index = 0;
707 uint32_t count = 0;
708 int node = -1;
709 int phandle;
710
711 /* Retrieve the phandle list property */
712 list = fdt_getprop(blob, src_node, list_name, &size);
713 if (!list)
714 return -ENOENT;
715 list_end = list + size / sizeof(*list);
716
717 /* Loop over the phandles until all the requested entry is found */
718 while (list < list_end) {
719 rc = -EINVAL;
720 count = 0;
721
722 /*
723 * If phandle is 0, then it is an empty entry with no
724 * arguments. Skip forward to the next entry.
725 */
726 phandle = be32_to_cpup(list++);
727 if (phandle) {
728 /*
729 * Find the provider node and parse the #*-cells
730 * property to determine the argument length.
731 *
732 * This is not needed if the cell count is hard-coded
733 * (i.e. cells_name not set, but cell_count is set),
734 * except when we're going to return the found node
735 * below.
736 */
737 if (cells_name || cur_index == index) {
738 node = fdt_node_offset_by_phandle(blob,
739 phandle);
740 if (!node) {
741 debug("%s: could not find phandle\n",
742 fdt_get_name(blob, src_node,
743 NULL));
744 goto err;
745 }
746 }
747
748 if (cells_name) {
749 count = fdtdec_get_int(blob, node, cells_name,
750 -1);
751 if (count == -1) {
752 debug("%s: could not get %s for %s\n",
753 fdt_get_name(blob, src_node,
754 NULL),
755 cells_name,
756 fdt_get_name(blob, node,
757 NULL));
758 goto err;
759 }
760 } else {
761 count = cell_count;
762 }
763
764 /*
765 * Make sure that the arguments actually fit in the
766 * remaining property data length
767 */
768 if (list + count > list_end) {
769 debug("%s: arguments longer than property\n",
770 fdt_get_name(blob, src_node, NULL));
771 goto err;
772 }
773 }
774
775 /*
776 * All of the error cases above bail out of the loop, so at
777 * this point, the parsing is successful. If the requested
778 * index matches, then fill the out_args structure and return,
779 * or return -ENOENT for an empty entry.
780 */
781 rc = -ENOENT;
782 if (cur_index == index) {
783 if (!phandle)
784 goto err;
785
786 if (out_args) {
787 int i;
788
789 if (count > MAX_PHANDLE_ARGS) {
790 debug("%s: too many arguments %d\n",
791 fdt_get_name(blob, src_node,
792 NULL), count);
793 count = MAX_PHANDLE_ARGS;
794 }
795 out_args->node = node;
796 out_args->args_count = count;
797 for (i = 0; i < count; i++) {
798 out_args->args[i] =
799 be32_to_cpup(list++);
800 }
801 }
802
803 /* Found it! return success */
804 return 0;
805 }
806
807 node = -1;
808 list += count;
809 cur_index++;
810 }
811
812 /*
813 * Result will be one of:
814 * -ENOENT : index is for empty phandle
815 * -EINVAL : parsing error on data
816 * [1..n] : Number of phandle (count mode; when index = -1)
817 */
818 rc = index < 0 ? cur_index : -ENOENT;
819 err:
820 return rc;
821}
822
Anton Staffbed4d892012-04-17 09:01:28 +0000823int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
824 u8 *array, int count)
825{
826 const u8 *cell;
827 int err;
828
829 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
830 if (!err)
831 memcpy(array, cell, count);
832 return err;
833}
834
835const u8 *fdtdec_locate_byte_array(const void *blob, int node,
836 const char *prop_name, int count)
837{
838 const u8 *cell;
839 int err;
840
841 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
842 if (err)
843 return NULL;
844 return cell;
845}
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000846
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000847int fdtdec_get_config_int(const void *blob, const char *prop_name,
848 int default_val)
849{
850 int config_node;
851
852 debug("%s: %s\n", __func__, prop_name);
853 config_node = fdt_path_offset(blob, "/config");
854 if (config_node < 0)
855 return default_val;
856 return fdtdec_get_int(blob, config_node, prop_name, default_val);
857}
Simon Glass332ab0d2012-10-25 16:30:59 +0000858
Gabe Black79289c02012-10-25 16:31:04 +0000859int fdtdec_get_config_bool(const void *blob, const char *prop_name)
860{
861 int config_node;
862 const void *prop;
863
864 debug("%s: %s\n", __func__, prop_name);
865 config_node = fdt_path_offset(blob, "/config");
866 if (config_node < 0)
867 return 0;
868 prop = fdt_get_property(blob, config_node, prop_name, NULL);
869
870 return prop != NULL;
871}
872
Simon Glass332ab0d2012-10-25 16:30:59 +0000873char *fdtdec_get_config_string(const void *blob, const char *prop_name)
874{
875 const char *nodep;
876 int nodeoffset;
877 int len;
878
879 debug("%s: %s\n", __func__, prop_name);
880 nodeoffset = fdt_path_offset(blob, "/config");
881 if (nodeoffset < 0)
882 return NULL;
883
884 nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
885 if (!nodep)
886 return NULL;
887
888 return (char *)nodep;
889}
Simon Glassf20c4612012-10-25 16:31:00 +0000890
Simon Glass76489832014-10-23 18:58:51 -0600891int fdtdec_decode_region(const void *blob, int node, const char *prop_name,
892 fdt_addr_t *basep, fdt_size_t *sizep)
Simon Glassf20c4612012-10-25 16:31:00 +0000893{
894 const fdt_addr_t *cell;
895 int len;
896
Simon Glass76489832014-10-23 18:58:51 -0600897 debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL),
898 prop_name);
Simon Glassf20c4612012-10-25 16:31:00 +0000899 cell = fdt_getprop(blob, node, prop_name, &len);
Simon Glass76489832014-10-23 18:58:51 -0600900 if (!cell || (len < sizeof(fdt_addr_t) * 2)) {
901 debug("cell=%p, len=%d\n", cell, len);
Simon Glassf20c4612012-10-25 16:31:00 +0000902 return -1;
Simon Glass76489832014-10-23 18:58:51 -0600903 }
Simon Glassf20c4612012-10-25 16:31:00 +0000904
Simon Glass76489832014-10-23 18:58:51 -0600905 *basep = fdt_addr_to_cpu(*cell);
906 *sizep = fdt_size_to_cpu(cell[1]);
907 debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep,
908 (ulong)*sizep);
909
Simon Glassf20c4612012-10-25 16:31:00 +0000910 return 0;
911}
Simon Glass006e73b2014-02-27 13:26:01 -0700912
913/**
914 * Read a flash entry from the fdt
915 *
916 * @param blob FDT blob
917 * @param node Offset of node to read
918 * @param name Name of node being read
919 * @param entry Place to put offset and size of this node
920 * @return 0 if ok, -ve on error
921 */
922int fdtdec_read_fmap_entry(const void *blob, int node, const char *name,
923 struct fmap_entry *entry)
924{
Simon Glassf3cc44f2014-10-23 18:58:52 -0600925 const char *prop;
Simon Glass006e73b2014-02-27 13:26:01 -0700926 u32 reg[2];
927
928 if (fdtdec_get_int_array(blob, node, "reg", reg, 2)) {
929 debug("Node '%s' has bad/missing 'reg' property\n", name);
930 return -FDT_ERR_NOTFOUND;
931 }
932 entry->offset = reg[0];
933 entry->length = reg[1];
Simon Glassf3cc44f2014-10-23 18:58:52 -0600934 entry->used = fdtdec_get_int(blob, node, "used", entry->length);
935 prop = fdt_getprop(blob, node, "compress", NULL);
936 entry->compress_algo = prop && !strcmp(prop, "lzo") ?
937 FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE;
938 prop = fdt_getprop(blob, node, "hash", &entry->hash_size);
939 entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE;
940 entry->hash = (uint8_t *)prop;
Simon Glass006e73b2014-02-27 13:26:01 -0700941
942 return 0;
943}
Thierry Reding56f42242014-08-26 17:33:53 +0200944
Simon Glass5f7bfdd2015-03-05 12:25:14 -0700945u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
Thierry Reding56f42242014-08-26 17:33:53 +0200946{
947 u64 number = 0;
948
949 while (cells--)
950 number = (number << 32) | fdt32_to_cpu(*ptr++);
951
952 return number;
953}
954
955int fdt_get_resource(const void *fdt, int node, const char *property,
956 unsigned int index, struct fdt_resource *res)
957{
958 const fdt32_t *ptr, *end;
959 int na, ns, len, parent;
960 unsigned int i = 0;
961
962 parent = fdt_parent_offset(fdt, node);
963 if (parent < 0)
964 return parent;
965
966 na = fdt_address_cells(fdt, parent);
967 ns = fdt_size_cells(fdt, parent);
968
969 ptr = fdt_getprop(fdt, node, property, &len);
970 if (!ptr)
971 return len;
972
973 end = ptr + len / sizeof(*ptr);
974
975 while (ptr + na + ns <= end) {
976 if (i == index) {
977 res->start = res->end = fdtdec_get_number(ptr, na);
978 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
979 return 0;
980 }
981
982 ptr += na + ns;
983 i++;
984 }
985
986 return -FDT_ERR_NOTFOUND;
987}
988
989int fdt_get_named_resource(const void *fdt, int node, const char *property,
990 const char *prop_names, const char *name,
991 struct fdt_resource *res)
992{
993 int index;
994
995 index = fdt_find_string(fdt, node, prop_names, name);
996 if (index < 0)
997 return index;
998
999 return fdt_get_resource(fdt, node, property, index, res);
1000}
Thierry Reding9f85eee2014-08-26 17:33:54 +02001001
Simon Glass26403872014-10-23 18:58:56 -06001002int fdtdec_decode_memory_region(const void *blob, int config_node,
1003 const char *mem_type, const char *suffix,
1004 fdt_addr_t *basep, fdt_size_t *sizep)
1005{
1006 char prop_name[50];
1007 const char *mem;
1008 fdt_size_t size, offset_size;
1009 fdt_addr_t base, offset;
1010 int node;
1011
1012 if (config_node == -1) {
1013 config_node = fdt_path_offset(blob, "/config");
1014 if (config_node < 0) {
1015 debug("%s: Cannot find /config node\n", __func__);
1016 return -ENOENT;
1017 }
1018 }
1019 if (!suffix)
1020 suffix = "";
1021
1022 snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type,
1023 suffix);
1024 mem = fdt_getprop(blob, config_node, prop_name, NULL);
1025 if (!mem) {
1026 debug("%s: No memory type for '%s', using /memory\n", __func__,
1027 prop_name);
1028 mem = "/memory";
1029 }
1030
1031 node = fdt_path_offset(blob, mem);
1032 if (node < 0) {
1033 debug("%s: Failed to find node '%s': %s\n", __func__, mem,
1034 fdt_strerror(node));
1035 return -ENOENT;
1036 }
1037
1038 /*
1039 * Not strictly correct - the memory may have multiple banks. We just
1040 * use the first
1041 */
1042 if (fdtdec_decode_region(blob, node, "reg", &base, &size)) {
1043 debug("%s: Failed to decode memory region %s\n", __func__,
1044 mem);
1045 return -EINVAL;
1046 }
1047
1048 snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type,
1049 suffix);
1050 if (fdtdec_decode_region(blob, config_node, prop_name, &offset,
1051 &offset_size)) {
1052 debug("%s: Failed to decode memory region '%s'\n", __func__,
1053 prop_name);
1054 return -EINVAL;
1055 }
1056
1057 *basep = base + offset;
1058 *sizep = offset_size;
1059
1060 return 0;
1061}
Simon Glassb45122f2015-02-27 22:06:34 -07001062
Simon Glass12e67112015-04-14 21:03:21 -06001063static int decode_timing_property(const void *blob, int node, const char *name,
1064 struct timing_entry *result)
1065{
1066 int length, ret = 0;
1067 const u32 *prop;
1068
1069 prop = fdt_getprop(blob, node, name, &length);
1070 if (!prop) {
1071 debug("%s: could not find property %s\n",
1072 fdt_get_name(blob, node, NULL), name);
1073 return length;
1074 }
1075
1076 if (length == sizeof(u32)) {
1077 result->typ = fdtdec_get_int(blob, node, name, 0);
1078 result->min = result->typ;
1079 result->max = result->typ;
1080 } else {
1081 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
1082 }
1083
1084 return ret;
1085}
1086
1087int fdtdec_decode_display_timing(const void *blob, int parent, int index,
1088 struct display_timing *dt)
1089{
1090 int i, node, timings_node;
1091 u32 val = 0;
1092 int ret = 0;
1093
1094 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
1095 if (timings_node < 0)
1096 return timings_node;
1097
1098 for (i = 0, node = fdt_first_subnode(blob, timings_node);
1099 node > 0 && i != index;
1100 node = fdt_next_subnode(blob, node))
1101 i++;
1102
1103 if (node < 0)
1104 return node;
1105
1106 memset(dt, 0, sizeof(*dt));
1107
1108 ret |= decode_timing_property(blob, node, "hback-porch",
1109 &dt->hback_porch);
1110 ret |= decode_timing_property(blob, node, "hfront-porch",
1111 &dt->hfront_porch);
1112 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
1113 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
1114 ret |= decode_timing_property(blob, node, "vback-porch",
1115 &dt->vback_porch);
1116 ret |= decode_timing_property(blob, node, "vfront-porch",
1117 &dt->vfront_porch);
1118 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
1119 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
1120 ret |= decode_timing_property(blob, node, "clock-frequency",
1121 &dt->pixelclock);
1122
1123 dt->flags = 0;
1124 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1125 if (val != -1) {
1126 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1127 DISPLAY_FLAGS_VSYNC_LOW;
1128 }
1129 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1130 if (val != -1) {
1131 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1132 DISPLAY_FLAGS_HSYNC_LOW;
1133 }
1134 val = fdtdec_get_int(blob, node, "de-active", -1);
1135 if (val != -1) {
1136 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1137 DISPLAY_FLAGS_DE_LOW;
1138 }
1139 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1140 if (val != -1) {
1141 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1142 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1143 }
1144
1145 if (fdtdec_get_bool(blob, node, "interlaced"))
1146 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1147 if (fdtdec_get_bool(blob, node, "doublescan"))
1148 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1149 if (fdtdec_get_bool(blob, node, "doubleclk"))
1150 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1151
1152 return 0;
1153}
1154
Simon Glass08793612015-02-27 22:06:35 -07001155int fdtdec_setup(void)
Simon Glassb45122f2015-02-27 22:06:34 -07001156{
1157#ifdef CONFIG_OF_CONTROL
1158# ifdef CONFIG_OF_EMBED
1159 /* Get a pointer to the FDT */
1160 gd->fdt_blob = __dtb_dt_begin;
1161# elif defined CONFIG_OF_SEPARATE
1162# ifdef CONFIG_SPL_BUILD
1163 /* FDT is at end of BSS */
1164 gd->fdt_blob = (ulong *)&__bss_end;
1165# else
1166 /* FDT is at end of image */
1167 gd->fdt_blob = (ulong *)&_end;
Masahiro Yamada3bd926c2015-08-01 16:03:25 +09001168# endif
Simon Glassb45122f2015-02-27 22:06:34 -07001169# elif defined(CONFIG_OF_HOSTFILE)
1170 if (sandbox_read_fdt_from_file()) {
1171 puts("Failed to read control FDT\n");
1172 return -1;
1173 }
1174# endif
1175# ifndef CONFIG_SPL_BUILD
1176 /* Allow the early environment to override the fdt address */
1177 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
1178 (uintptr_t)gd->fdt_blob);
1179# endif
1180#endif
Simon Glass08793612015-02-27 22:06:35 -07001181 return fdtdec_prepare_fdt();
Simon Glassb45122f2015-02-27 22:06:34 -07001182}
1183
1184#endif /* !USE_HOSTCC */