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Commit | Line | Data |
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b5220bc6 SG |
1 | /* |
2 | * Copyright (c) 2011 The Chromium OS Authors. | |
1a459660 | 3 | * SPDX-License-Identifier: GPL-2.0+ |
b5220bc6 SG |
4 | */ |
5 | ||
29a23f9d | 6 | #ifndef USE_HOSTCC |
b5220bc6 | 7 | #include <common.h> |
5c33c9fd | 8 | #include <errno.h> |
b5220bc6 SG |
9 | #include <serial.h> |
10 | #include <libfdt.h> | |
11 | #include <fdtdec.h> | |
b45122fd | 12 | #include <asm/sections.h> |
5c33c9fd | 13 | #include <linux/ctype.h> |
b5220bc6 SG |
14 | |
15 | DECLARE_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 | |
23 | static const char * const compat_names[COMPAT_COUNT] = { | |
f88fe2de | 24 | COMPAT(UNKNOWN, "<none>"), |
87f938c9 | 25 | COMPAT(NVIDIA_TEGRA20_USB, "nvidia,tegra20-ehci"), |
7e44d932 JL |
26 | COMPAT(NVIDIA_TEGRA30_USB, "nvidia,tegra30-ehci"), |
27 | COMPAT(NVIDIA_TEGRA114_USB, "nvidia,tegra114-ehci"), | |
0e35ad05 JZ |
28 | COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"), |
29 | COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"), | |
6642a681 | 30 | COMPAT(NVIDIA_TEGRA20_KBC, "nvidia,tegra20-kbc"), |
312693c3 | 31 | COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"), |
e1ae0d1f | 32 | COMPAT(NVIDIA_TEGRA20_PWM, "nvidia,tegra20-pwm"), |
00f37327 SG |
33 | COMPAT(NVIDIA_TEGRA124_DC, "nvidia,tegra124-dc"), |
34 | COMPAT(NVIDIA_TEGRA124_SOR, "nvidia,tegra124-sor"), | |
35 | COMPAT(NVIDIA_TEGRA124_PMC, "nvidia,tegra124-pmc"), | |
87540de3 | 36 | COMPAT(NVIDIA_TEGRA20_DC, "nvidia,tegra20-dc"), |
a73ca478 | 37 | COMPAT(NVIDIA_TEGRA124_SDMMC, "nvidia,tegra124-sdhci"), |
f4e4e0b0 | 38 | COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"), |
c9aa831e | 39 | COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"), |
f315828b TR |
40 | COMPAT(NVIDIA_TEGRA124_PCIE, "nvidia,tegra124-pcie"), |
41 | COMPAT(NVIDIA_TEGRA30_PCIE, "nvidia,tegra30-pcie"), | |
42 | COMPAT(NVIDIA_TEGRA20_PCIE, "nvidia,tegra20-pcie"), | |
79c7a90f | 43 | COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"), |
cc9fe33a HR |
44 | COMPAT(SMSC_LAN9215, "smsc,lan9215"), |
45 | COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"), | |
c34253d1 | 46 | COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"), |
72dbff12 RS |
47 | COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"), |
48 | COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"), | |
713cb680 | 49 | COMPAT(GOOGLE_CROS_EC_KEYB, "google,cros-ec-keyb"), |
6abd1620 | 50 | COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"), |
108b85be | 51 | COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"), |
618766c0 | 52 | COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"), |
d7377b51 | 53 | COMPAT(SAMSUNG_EXYNOS_FIMD, "samsung,exynos-fimd"), |
de461c52 | 54 | COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"), |
1e4706a7 | 55 | COMPAT(SAMSUNG_EXYNOS5_DP, "samsung,exynos5-dp"), |
7d3ca0f8 | 56 | COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"), |
3577fe8b | 57 | COMPAT(SAMSUNG_EXYNOS_MMC, "samsung,exynos-mmc"), |
ee1e3c2f | 58 | COMPAT(SAMSUNG_EXYNOS_SERIAL, "samsung,exynos4210-uart"), |
cd577e2b | 59 | COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686_pmic"), |
bb8215f4 | 60 | COMPAT(GENERIC_SPI_FLASH, "spi-flash"), |
7772bb78 | 61 | COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"), |
f6267998 | 62 | COMPAT(INFINEON_SLB9635_TPM, "infineon,slb9635-tpm"), |
ec34fa5e | 63 | COMPAT(INFINEON_SLB9645_TPM, "infineon,slb9645-tpm"), |
ecbd7e1e | 64 | COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"), |
7d95f2a3 | 65 | COMPAT(SANDBOX_LCD_SDL, "sandbox,lcd-sdl"), |
ac1058fd | 66 | COMPAT(TI_TPS65090, "ti,tps65090"), |
a9cf6da9 | 67 | COMPAT(COMPAT_NXP_PTN3460, "nxp,ptn3460"), |
45c480c9 | 68 | COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"), |
9e8f664e | 69 | COMPAT(PARADE_PS8625, "parade,ps8625"), |
77f9b1fb | 70 | COMPAT(INTEL_MICROCODE, "intel,microcode"), |
65dd74a6 | 71 | COMPAT(MEMORY_SPD, "memory-spd"), |
3ac83935 | 72 | COMPAT(INTEL_PANTHERPOINT_AHCI, "intel,pantherpoint-ahci"), |
bb80be39 | 73 | COMPAT(INTEL_MODEL_206AX, "intel,model-206ax"), |
effcf067 | 74 | COMPAT(INTEL_GMA, "intel,gma"), |
6173c45b | 75 | COMPAT(AMS_AS3722, "ams,as3722"), |
5da38086 | 76 | COMPAT(INTEL_ICH_SPI, "intel,ich-spi"), |
c89ada01 | 77 | COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"), |
6462cded | 78 | COMPAT(SOCIONEXT_XHCI, "socionext,uniphier-xhci"), |
90b16d14 | 79 | COMPAT(COMPAT_INTEL_PCH, "intel,bd82x6x"), |
b5220bc6 SG |
80 | }; |
81 | ||
a53f4a29 SG |
82 | const char *fdtdec_get_compatible(enum fdt_compat_id id) |
83 | { | |
84 | /* We allow reading of the 'unknown' ID for testing purposes */ | |
85 | assert(id >= 0 && id < COMPAT_COUNT); | |
86 | return compat_names[id]; | |
87 | } | |
88 | ||
4397a2a8 SG |
89 | fdt_addr_t fdtdec_get_addr_size(const void *blob, int node, |
90 | const char *prop_name, fdt_size_t *sizep) | |
b5220bc6 SG |
91 | { |
92 | const fdt_addr_t *cell; | |
93 | int len; | |
94 | ||
1cb2323b | 95 | debug("%s: %s: ", __func__, prop_name); |
b5220bc6 | 96 | cell = fdt_getprop(blob, node, prop_name, &len); |
4397a2a8 SG |
97 | if (cell && ((!sizep && len == sizeof(fdt_addr_t)) || |
98 | len == sizeof(fdt_addr_t) * 2)) { | |
1cb2323b | 99 | fdt_addr_t addr = fdt_addr_to_cpu(*cell); |
4397a2a8 SG |
100 | if (sizep) { |
101 | const fdt_size_t *size; | |
1cb2323b | 102 | |
4397a2a8 SG |
103 | size = (fdt_size_t *)((char *)cell + |
104 | sizeof(fdt_addr_t)); | |
105 | *sizep = fdt_size_to_cpu(*size); | |
370b6c5c SG |
106 | debug("addr=%08lx, size=%08x\n", |
107 | (ulong)addr, *sizep); | |
4397a2a8 | 108 | } else { |
370b6c5c | 109 | debug("%08lx\n", (ulong)addr); |
4397a2a8 | 110 | } |
1cb2323b SG |
111 | return addr; |
112 | } | |
113 | debug("(not found)\n"); | |
b5220bc6 SG |
114 | return FDT_ADDR_T_NONE; |
115 | } | |
116 | ||
4397a2a8 SG |
117 | fdt_addr_t fdtdec_get_addr(const void *blob, int node, |
118 | const char *prop_name) | |
119 | { | |
120 | return fdtdec_get_addr_size(blob, node, prop_name, NULL); | |
121 | } | |
122 | ||
a62e84d7 BM |
123 | #ifdef CONFIG_PCI |
124 | int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type, | |
125 | const char *prop_name, struct fdt_pci_addr *addr) | |
126 | { | |
127 | const u32 *cell; | |
128 | int len; | |
129 | int ret = -ENOENT; | |
130 | ||
131 | debug("%s: %s: ", __func__, prop_name); | |
132 | ||
133 | /* | |
134 | * If we follow the pci bus bindings strictly, we should check | |
135 | * the value of the node's parent node's #address-cells and | |
136 | * #size-cells. They need to be 3 and 2 accordingly. However, | |
137 | * for simplicity we skip the check here. | |
138 | */ | |
139 | cell = fdt_getprop(blob, node, prop_name, &len); | |
140 | if (!cell) | |
141 | goto fail; | |
142 | ||
143 | if ((len % FDT_PCI_REG_SIZE) == 0) { | |
144 | int num = len / FDT_PCI_REG_SIZE; | |
145 | int i; | |
146 | ||
147 | for (i = 0; i < num; i++) { | |
148 | debug("pci address #%d: %08lx %08lx %08lx\n", i, | |
149 | (ulong)fdt_addr_to_cpu(cell[0]), | |
150 | (ulong)fdt_addr_to_cpu(cell[1]), | |
151 | (ulong)fdt_addr_to_cpu(cell[2])); | |
152 | if ((fdt_addr_to_cpu(*cell) & type) == type) { | |
153 | addr->phys_hi = fdt_addr_to_cpu(cell[0]); | |
154 | addr->phys_mid = fdt_addr_to_cpu(cell[1]); | |
155 | addr->phys_lo = fdt_addr_to_cpu(cell[2]); | |
156 | break; | |
157 | } else { | |
158 | cell += (FDT_PCI_ADDR_CELLS + | |
159 | FDT_PCI_SIZE_CELLS); | |
160 | } | |
161 | } | |
162 | ||
106cce96 SG |
163 | if (i == num) { |
164 | ret = -ENXIO; | |
a62e84d7 | 165 | goto fail; |
106cce96 | 166 | } |
a62e84d7 BM |
167 | |
168 | return 0; | |
169 | } else { | |
170 | ret = -EINVAL; | |
171 | } | |
172 | ||
173 | fail: | |
174 | debug("(not found)\n"); | |
175 | return ret; | |
176 | } | |
177 | ||
178 | int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device) | |
179 | { | |
180 | const char *list, *end; | |
181 | int len; | |
182 | ||
183 | list = fdt_getprop(blob, node, "compatible", &len); | |
184 | if (!list) | |
185 | return -ENOENT; | |
186 | ||
187 | end = list + len; | |
188 | while (list < end) { | |
189 | char *s; | |
190 | ||
191 | len = strlen(list); | |
192 | if (len >= strlen("pciVVVV,DDDD")) { | |
193 | s = strstr(list, "pci"); | |
194 | ||
195 | /* | |
196 | * check if the string is something like pciVVVV,DDDD.RR | |
197 | * or just pciVVVV,DDDD | |
198 | */ | |
199 | if (s && s[7] == ',' && | |
200 | (s[12] == '.' || s[12] == 0)) { | |
201 | s += 3; | |
202 | *vendor = simple_strtol(s, NULL, 16); | |
203 | ||
204 | s += 5; | |
205 | *device = simple_strtol(s, NULL, 16); | |
206 | ||
207 | return 0; | |
208 | } | |
209 | } else { | |
210 | list += (len + 1); | |
211 | } | |
212 | } | |
213 | ||
214 | return -ENOENT; | |
215 | } | |
216 | ||
217 | int fdtdec_get_pci_bdf(const void *blob, int node, | |
218 | struct fdt_pci_addr *addr, pci_dev_t *bdf) | |
219 | { | |
220 | u16 dt_vendor, dt_device, vendor, device; | |
221 | int ret; | |
222 | ||
223 | /* get vendor id & device id from the compatible string */ | |
224 | ret = fdtdec_get_pci_vendev(blob, node, &dt_vendor, &dt_device); | |
225 | if (ret) | |
226 | return ret; | |
227 | ||
228 | /* extract the bdf from fdt_pci_addr */ | |
229 | *bdf = addr->phys_hi & 0xffff00; | |
230 | ||
231 | /* read vendor id & device id based on bdf */ | |
232 | pci_read_config_word(*bdf, PCI_VENDOR_ID, &vendor); | |
233 | pci_read_config_word(*bdf, PCI_DEVICE_ID, &device); | |
234 | ||
235 | /* | |
236 | * Note there are two places in the device tree to fully describe | |
237 | * a pci device: one is via compatible string with a format of | |
238 | * "pciVVVV,DDDD" and the other one is the bdf numbers encoded in | |
239 | * the device node's reg address property. We read the vendor id | |
240 | * and device id based on bdf and compare the values with the | |
241 | * "VVVV,DDDD". If they are the same, then we are good to use bdf | |
242 | * to read device's bar. But if they are different, we have to rely | |
243 | * on the vendor id and device id extracted from the compatible | |
244 | * string and locate the real bdf by pci_find_device(). This is | |
245 | * because normally we may only know device's device number and | |
246 | * function number when writing device tree. The bus number is | |
247 | * dynamically assigned during the pci enumeration process. | |
248 | */ | |
249 | if ((dt_vendor != vendor) || (dt_device != device)) { | |
250 | *bdf = pci_find_device(dt_vendor, dt_device, 0); | |
251 | if (*bdf == -1) | |
252 | return -ENODEV; | |
253 | } | |
254 | ||
255 | return 0; | |
256 | } | |
257 | ||
258 | int fdtdec_get_pci_bar32(const void *blob, int node, | |
259 | struct fdt_pci_addr *addr, u32 *bar) | |
260 | { | |
261 | pci_dev_t bdf; | |
262 | int barnum; | |
263 | int ret; | |
264 | ||
265 | /* get pci devices's bdf */ | |
266 | ret = fdtdec_get_pci_bdf(blob, node, addr, &bdf); | |
267 | if (ret) | |
268 | return ret; | |
269 | ||
270 | /* extract the bar number from fdt_pci_addr */ | |
271 | barnum = addr->phys_hi & 0xff; | |
272 | if ((barnum < PCI_BASE_ADDRESS_0) || (barnum > PCI_CARDBUS_CIS)) | |
273 | return -EINVAL; | |
274 | ||
275 | barnum = (barnum - PCI_BASE_ADDRESS_0) / 4; | |
276 | *bar = pci_read_bar32(pci_bus_to_hose(PCI_BUS(bdf)), bdf, barnum); | |
277 | ||
278 | return 0; | |
279 | } | |
280 | #endif | |
281 | ||
aadef0a1 CLC |
282 | uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name, |
283 | uint64_t default_val) | |
284 | { | |
285 | const uint64_t *cell64; | |
286 | int length; | |
287 | ||
288 | cell64 = fdt_getprop(blob, node, prop_name, &length); | |
289 | if (!cell64 || length < sizeof(*cell64)) | |
290 | return default_val; | |
291 | ||
292 | return fdt64_to_cpu(*cell64); | |
293 | } | |
294 | ||
f88fe2de | 295 | int fdtdec_get_is_enabled(const void *blob, int node) |
b5220bc6 SG |
296 | { |
297 | const char *cell; | |
298 | ||
f88fe2de SG |
299 | /* |
300 | * It should say "okay", so only allow that. Some fdts use "ok" but | |
301 | * this is a bug. Please fix your device tree source file. See here | |
302 | * for discussion: | |
303 | * | |
304 | * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html | |
305 | */ | |
b5220bc6 SG |
306 | cell = fdt_getprop(blob, node, "status", NULL); |
307 | if (cell) | |
f88fe2de SG |
308 | return 0 == strcmp(cell, "okay"); |
309 | return 1; | |
b5220bc6 SG |
310 | } |
311 | ||
7cde397b | 312 | enum fdt_compat_id fdtdec_lookup(const void *blob, int node) |
b5220bc6 SG |
313 | { |
314 | enum fdt_compat_id id; | |
315 | ||
316 | /* Search our drivers */ | |
317 | for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++) | |
318 | if (0 == fdt_node_check_compatible(blob, node, | |
319 | compat_names[id])) | |
320 | return id; | |
321 | return COMPAT_UNKNOWN; | |
322 | } | |
323 | ||
324 | int fdtdec_next_compatible(const void *blob, int node, | |
325 | enum fdt_compat_id id) | |
326 | { | |
327 | return fdt_node_offset_by_compatible(blob, node, compat_names[id]); | |
328 | } | |
329 | ||
3ddecfc7 SG |
330 | int fdtdec_next_compatible_subnode(const void *blob, int node, |
331 | enum fdt_compat_id id, int *depthp) | |
332 | { | |
333 | do { | |
334 | node = fdt_next_node(blob, node, depthp); | |
335 | } while (*depthp > 1); | |
336 | ||
337 | /* If this is a direct subnode, and compatible, return it */ | |
338 | if (*depthp == 1 && 0 == fdt_node_check_compatible( | |
339 | blob, node, compat_names[id])) | |
340 | return node; | |
341 | ||
342 | return -FDT_ERR_NOTFOUND; | |
343 | } | |
344 | ||
b5220bc6 SG |
345 | int fdtdec_next_alias(const void *blob, const char *name, |
346 | enum fdt_compat_id id, int *upto) | |
347 | { | |
348 | #define MAX_STR_LEN 20 | |
349 | char str[MAX_STR_LEN + 20]; | |
350 | int node, err; | |
351 | ||
352 | /* snprintf() is not available */ | |
353 | assert(strlen(name) < MAX_STR_LEN); | |
354 | sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto); | |
00878476 | 355 | node = fdt_path_offset(blob, str); |
b5220bc6 SG |
356 | if (node < 0) |
357 | return node; | |
358 | err = fdt_node_check_compatible(blob, node, compat_names[id]); | |
359 | if (err < 0) | |
360 | return err; | |
f88fe2de SG |
361 | if (err) |
362 | return -FDT_ERR_NOTFOUND; | |
363 | (*upto)++; | |
364 | return node; | |
b5220bc6 SG |
365 | } |
366 | ||
a53f4a29 SG |
367 | int fdtdec_find_aliases_for_id(const void *blob, const char *name, |
368 | enum fdt_compat_id id, int *node_list, int maxcount) | |
c6782270 SG |
369 | { |
370 | memset(node_list, '\0', sizeof(*node_list) * maxcount); | |
371 | ||
372 | return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount); | |
373 | } | |
374 | ||
375 | /* TODO: Can we tighten this code up a little? */ | |
376 | int fdtdec_add_aliases_for_id(const void *blob, const char *name, | |
377 | enum fdt_compat_id id, int *node_list, int maxcount) | |
a53f4a29 SG |
378 | { |
379 | int name_len = strlen(name); | |
380 | int nodes[maxcount]; | |
381 | int num_found = 0; | |
382 | int offset, node; | |
383 | int alias_node; | |
384 | int count; | |
385 | int i, j; | |
386 | ||
387 | /* find the alias node if present */ | |
388 | alias_node = fdt_path_offset(blob, "/aliases"); | |
389 | ||
390 | /* | |
391 | * start with nothing, and we can assume that the root node can't | |
392 | * match | |
393 | */ | |
394 | memset(nodes, '\0', sizeof(nodes)); | |
395 | ||
396 | /* First find all the compatible nodes */ | |
397 | for (node = count = 0; node >= 0 && count < maxcount;) { | |
398 | node = fdtdec_next_compatible(blob, node, id); | |
399 | if (node >= 0) | |
400 | nodes[count++] = node; | |
401 | } | |
402 | if (node >= 0) | |
403 | debug("%s: warning: maxcount exceeded with alias '%s'\n", | |
404 | __func__, name); | |
405 | ||
406 | /* Now find all the aliases */ | |
a53f4a29 SG |
407 | for (offset = fdt_first_property_offset(blob, alias_node); |
408 | offset > 0; | |
409 | offset = fdt_next_property_offset(blob, offset)) { | |
410 | const struct fdt_property *prop; | |
411 | const char *path; | |
412 | int number; | |
413 | int found; | |
414 | ||
415 | node = 0; | |
416 | prop = fdt_get_property_by_offset(blob, offset, NULL); | |
417 | path = fdt_string(blob, fdt32_to_cpu(prop->nameoff)); | |
418 | if (prop->len && 0 == strncmp(path, name, name_len)) | |
419 | node = fdt_path_offset(blob, prop->data); | |
420 | if (node <= 0) | |
421 | continue; | |
422 | ||
423 | /* Get the alias number */ | |
424 | number = simple_strtoul(path + name_len, NULL, 10); | |
425 | if (number < 0 || number >= maxcount) { | |
426 | debug("%s: warning: alias '%s' is out of range\n", | |
427 | __func__, path); | |
428 | continue; | |
429 | } | |
430 | ||
431 | /* Make sure the node we found is actually in our list! */ | |
432 | found = -1; | |
433 | for (j = 0; j < count; j++) | |
434 | if (nodes[j] == node) { | |
435 | found = j; | |
436 | break; | |
437 | } | |
438 | ||
439 | if (found == -1) { | |
440 | debug("%s: warning: alias '%s' points to a node " | |
441 | "'%s' that is missing or is not compatible " | |
442 | " with '%s'\n", __func__, path, | |
443 | fdt_get_name(blob, node, NULL), | |
444 | compat_names[id]); | |
445 | continue; | |
446 | } | |
447 | ||
448 | /* | |
449 | * Add this node to our list in the right place, and mark | |
450 | * it as done. | |
451 | */ | |
452 | if (fdtdec_get_is_enabled(blob, node)) { | |
c6782270 SG |
453 | if (node_list[number]) { |
454 | debug("%s: warning: alias '%s' requires that " | |
455 | "a node be placed in the list in a " | |
456 | "position which is already filled by " | |
457 | "node '%s'\n", __func__, path, | |
458 | fdt_get_name(blob, node, NULL)); | |
459 | continue; | |
460 | } | |
a53f4a29 SG |
461 | node_list[number] = node; |
462 | if (number >= num_found) | |
463 | num_found = number + 1; | |
464 | } | |
c6782270 | 465 | nodes[found] = 0; |
a53f4a29 SG |
466 | } |
467 | ||
468 | /* Add any nodes not mentioned by an alias */ | |
469 | for (i = j = 0; i < maxcount; i++) { | |
470 | if (!node_list[i]) { | |
471 | for (; j < maxcount; j++) | |
472 | if (nodes[j] && | |
473 | fdtdec_get_is_enabled(blob, nodes[j])) | |
474 | break; | |
475 | ||
476 | /* Have we run out of nodes to add? */ | |
477 | if (j == maxcount) | |
478 | break; | |
479 | ||
480 | assert(!node_list[i]); | |
481 | node_list[i] = nodes[j++]; | |
482 | if (i >= num_found) | |
483 | num_found = i + 1; | |
484 | } | |
485 | } | |
486 | ||
487 | return num_found; | |
488 | } | |
489 | ||
5c33c9fd SG |
490 | int fdtdec_get_alias_seq(const void *blob, const char *base, int offset, |
491 | int *seqp) | |
492 | { | |
493 | int base_len = strlen(base); | |
494 | const char *find_name; | |
495 | int find_namelen; | |
496 | int prop_offset; | |
497 | int aliases; | |
498 | ||
499 | find_name = fdt_get_name(blob, offset, &find_namelen); | |
500 | debug("Looking for '%s' at %d, name %s\n", base, offset, find_name); | |
501 | ||
502 | aliases = fdt_path_offset(blob, "/aliases"); | |
503 | for (prop_offset = fdt_first_property_offset(blob, aliases); | |
504 | prop_offset > 0; | |
505 | prop_offset = fdt_next_property_offset(blob, prop_offset)) { | |
506 | const char *prop; | |
507 | const char *name; | |
508 | const char *slash; | |
509 | const char *p; | |
510 | int len; | |
511 | ||
512 | prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len); | |
513 | debug(" - %s, %s\n", name, prop); | |
514 | if (len < find_namelen || *prop != '/' || prop[len - 1] || | |
515 | strncmp(name, base, base_len)) | |
516 | continue; | |
517 | ||
518 | slash = strrchr(prop, '/'); | |
519 | if (strcmp(slash + 1, find_name)) | |
520 | continue; | |
a88340df SG |
521 | for (p = name + strlen(name) - 1; p > name; p--) { |
522 | if (!isdigit(*p)) { | |
523 | *seqp = simple_strtoul(p + 1, NULL, 10); | |
5c33c9fd SG |
524 | debug("Found seq %d\n", *seqp); |
525 | return 0; | |
526 | } | |
527 | } | |
528 | } | |
529 | ||
530 | debug("Not found\n"); | |
531 | return -ENOENT; | |
532 | } | |
533 | ||
aac07d49 SG |
534 | int fdtdec_get_chosen_node(const void *blob, const char *name) |
535 | { | |
536 | const char *prop; | |
537 | int chosen_node; | |
538 | int len; | |
539 | ||
540 | if (!blob) | |
541 | return -FDT_ERR_NOTFOUND; | |
542 | chosen_node = fdt_path_offset(blob, "/chosen"); | |
543 | prop = fdt_getprop(blob, chosen_node, name, &len); | |
544 | if (!prop) | |
545 | return -FDT_ERR_NOTFOUND; | |
546 | return fdt_path_offset(blob, prop); | |
547 | } | |
548 | ||
9a263e55 SG |
549 | int fdtdec_check_fdt(void) |
550 | { | |
551 | /* | |
552 | * We must have an FDT, but we cannot panic() yet since the console | |
553 | * is not ready. So for now, just assert(). Boards which need an early | |
554 | * FDT (prior to console ready) will need to make their own | |
555 | * arrangements and do their own checks. | |
556 | */ | |
557 | assert(!fdtdec_prepare_fdt()); | |
558 | return 0; | |
559 | } | |
560 | ||
b5220bc6 SG |
561 | /* |
562 | * This function is a little odd in that it accesses global data. At some | |
563 | * point if the architecture board.c files merge this will make more sense. | |
564 | * Even now, it is common code. | |
565 | */ | |
9a263e55 | 566 | int fdtdec_prepare_fdt(void) |
b5220bc6 | 567 | { |
c309c2da SG |
568 | if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) || |
569 | fdt_check_header(gd->fdt_blob)) { | |
66312374 SG |
570 | #ifdef CONFIG_SPL_BUILD |
571 | puts("Missing DTB\n"); | |
572 | #else | |
573 | 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"); | |
574 | #endif | |
9a263e55 SG |
575 | return -1; |
576 | } | |
b5220bc6 SG |
577 | return 0; |
578 | } | |
d17da655 SG |
579 | |
580 | int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name) | |
581 | { | |
582 | const u32 *phandle; | |
583 | int lookup; | |
584 | ||
1cb2323b | 585 | debug("%s: %s\n", __func__, prop_name); |
d17da655 SG |
586 | phandle = fdt_getprop(blob, node, prop_name, NULL); |
587 | if (!phandle) | |
588 | return -FDT_ERR_NOTFOUND; | |
589 | ||
590 | lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle)); | |
591 | return lookup; | |
592 | } | |
593 | ||
594 | /** | |
595 | * Look up a property in a node and check that it has a minimum length. | |
596 | * | |
597 | * @param blob FDT blob | |
598 | * @param node node to examine | |
599 | * @param prop_name name of property to find | |
600 | * @param min_len minimum property length in bytes | |
601 | * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not | |
602 | found, or -FDT_ERR_BADLAYOUT if not enough data | |
603 | * @return pointer to cell, which is only valid if err == 0 | |
604 | */ | |
605 | static const void *get_prop_check_min_len(const void *blob, int node, | |
606 | const char *prop_name, int min_len, int *err) | |
607 | { | |
608 | const void *cell; | |
609 | int len; | |
610 | ||
611 | debug("%s: %s\n", __func__, prop_name); | |
612 | cell = fdt_getprop(blob, node, prop_name, &len); | |
613 | if (!cell) | |
614 | *err = -FDT_ERR_NOTFOUND; | |
615 | else if (len < min_len) | |
616 | *err = -FDT_ERR_BADLAYOUT; | |
617 | else | |
618 | *err = 0; | |
619 | return cell; | |
620 | } | |
621 | ||
622 | int fdtdec_get_int_array(const void *blob, int node, const char *prop_name, | |
623 | u32 *array, int count) | |
624 | { | |
625 | const u32 *cell; | |
626 | int i, err = 0; | |
627 | ||
628 | debug("%s: %s\n", __func__, prop_name); | |
629 | cell = get_prop_check_min_len(blob, node, prop_name, | |
630 | sizeof(u32) * count, &err); | |
631 | if (!err) { | |
632 | for (i = 0; i < count; i++) | |
633 | array[i] = fdt32_to_cpu(cell[i]); | |
634 | } | |
635 | return err; | |
636 | } | |
637 | ||
a9f04d49 SG |
638 | int fdtdec_get_int_array_count(const void *blob, int node, |
639 | const char *prop_name, u32 *array, int count) | |
640 | { | |
641 | const u32 *cell; | |
642 | int len, elems; | |
643 | int i; | |
644 | ||
645 | debug("%s: %s\n", __func__, prop_name); | |
646 | cell = fdt_getprop(blob, node, prop_name, &len); | |
647 | if (!cell) | |
648 | return -FDT_ERR_NOTFOUND; | |
649 | elems = len / sizeof(u32); | |
650 | if (count > elems) | |
651 | count = elems; | |
652 | for (i = 0; i < count; i++) | |
653 | array[i] = fdt32_to_cpu(cell[i]); | |
654 | ||
655 | return count; | |
656 | } | |
657 | ||
96875e7d SG |
658 | const u32 *fdtdec_locate_array(const void *blob, int node, |
659 | const char *prop_name, int count) | |
660 | { | |
661 | const u32 *cell; | |
662 | int err; | |
663 | ||
664 | cell = get_prop_check_min_len(blob, node, prop_name, | |
665 | sizeof(u32) * count, &err); | |
666 | return err ? NULL : cell; | |
667 | } | |
668 | ||
d17da655 SG |
669 | int fdtdec_get_bool(const void *blob, int node, const char *prop_name) |
670 | { | |
671 | const s32 *cell; | |
672 | int len; | |
673 | ||
674 | debug("%s: %s\n", __func__, prop_name); | |
675 | cell = fdt_getprop(blob, node, prop_name, &len); | |
676 | return cell != NULL; | |
677 | } | |
ed3ee5cd | 678 | |
57068a7a SG |
679 | int fdtdec_parse_phandle_with_args(const void *blob, int src_node, |
680 | const char *list_name, | |
681 | const char *cells_name, | |
682 | int cell_count, int index, | |
683 | struct fdtdec_phandle_args *out_args) | |
684 | { | |
685 | const __be32 *list, *list_end; | |
686 | int rc = 0, size, cur_index = 0; | |
687 | uint32_t count = 0; | |
688 | int node = -1; | |
689 | int phandle; | |
690 | ||
691 | /* Retrieve the phandle list property */ | |
692 | list = fdt_getprop(blob, src_node, list_name, &size); | |
693 | if (!list) | |
694 | return -ENOENT; | |
695 | list_end = list + size / sizeof(*list); | |
696 | ||
697 | /* Loop over the phandles until all the requested entry is found */ | |
698 | while (list < list_end) { | |
699 | rc = -EINVAL; | |
700 | count = 0; | |
701 | ||
702 | /* | |
703 | * If phandle is 0, then it is an empty entry with no | |
704 | * arguments. Skip forward to the next entry. | |
705 | */ | |
706 | phandle = be32_to_cpup(list++); | |
707 | if (phandle) { | |
708 | /* | |
709 | * Find the provider node and parse the #*-cells | |
710 | * property to determine the argument length. | |
711 | * | |
712 | * This is not needed if the cell count is hard-coded | |
713 | * (i.e. cells_name not set, but cell_count is set), | |
714 | * except when we're going to return the found node | |
715 | * below. | |
716 | */ | |
717 | if (cells_name || cur_index == index) { | |
718 | node = fdt_node_offset_by_phandle(blob, | |
719 | phandle); | |
720 | if (!node) { | |
721 | debug("%s: could not find phandle\n", | |
722 | fdt_get_name(blob, src_node, | |
723 | NULL)); | |
724 | goto err; | |
725 | } | |
726 | } | |
727 | ||
728 | if (cells_name) { | |
729 | count = fdtdec_get_int(blob, node, cells_name, | |
730 | -1); | |
731 | if (count == -1) { | |
732 | debug("%s: could not get %s for %s\n", | |
733 | fdt_get_name(blob, src_node, | |
734 | NULL), | |
735 | cells_name, | |
736 | fdt_get_name(blob, node, | |
737 | NULL)); | |
738 | goto err; | |
739 | } | |
740 | } else { | |
741 | count = cell_count; | |
742 | } | |
743 | ||
744 | /* | |
745 | * Make sure that the arguments actually fit in the | |
746 | * remaining property data length | |
747 | */ | |
748 | if (list + count > list_end) { | |
749 | debug("%s: arguments longer than property\n", | |
750 | fdt_get_name(blob, src_node, NULL)); | |
751 | goto err; | |
752 | } | |
753 | } | |
754 | ||
755 | /* | |
756 | * All of the error cases above bail out of the loop, so at | |
757 | * this point, the parsing is successful. If the requested | |
758 | * index matches, then fill the out_args structure and return, | |
759 | * or return -ENOENT for an empty entry. | |
760 | */ | |
761 | rc = -ENOENT; | |
762 | if (cur_index == index) { | |
763 | if (!phandle) | |
764 | goto err; | |
765 | ||
766 | if (out_args) { | |
767 | int i; | |
768 | ||
769 | if (count > MAX_PHANDLE_ARGS) { | |
770 | debug("%s: too many arguments %d\n", | |
771 | fdt_get_name(blob, src_node, | |
772 | NULL), count); | |
773 | count = MAX_PHANDLE_ARGS; | |
774 | } | |
775 | out_args->node = node; | |
776 | out_args->args_count = count; | |
777 | for (i = 0; i < count; i++) { | |
778 | out_args->args[i] = | |
779 | be32_to_cpup(list++); | |
780 | } | |
781 | } | |
782 | ||
783 | /* Found it! return success */ | |
784 | return 0; | |
785 | } | |
786 | ||
787 | node = -1; | |
788 | list += count; | |
789 | cur_index++; | |
790 | } | |
791 | ||
792 | /* | |
793 | * Result will be one of: | |
794 | * -ENOENT : index is for empty phandle | |
795 | * -EINVAL : parsing error on data | |
796 | * [1..n] : Number of phandle (count mode; when index = -1) | |
797 | */ | |
798 | rc = index < 0 ? cur_index : -ENOENT; | |
799 | err: | |
800 | return rc; | |
801 | } | |
802 | ||
bed4d892 AS |
803 | int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name, |
804 | u8 *array, int count) | |
805 | { | |
806 | const u8 *cell; | |
807 | int err; | |
808 | ||
809 | cell = get_prop_check_min_len(blob, node, prop_name, count, &err); | |
810 | if (!err) | |
811 | memcpy(array, cell, count); | |
812 | return err; | |
813 | } | |
814 | ||
815 | const u8 *fdtdec_locate_byte_array(const void *blob, int node, | |
816 | const char *prop_name, int count) | |
817 | { | |
818 | const u8 *cell; | |
819 | int err; | |
820 | ||
821 | cell = get_prop_check_min_len(blob, node, prop_name, count, &err); | |
822 | if (err) | |
823 | return NULL; | |
824 | return cell; | |
825 | } | |
09258f1e | 826 | |
09258f1e AK |
827 | int fdtdec_get_config_int(const void *blob, const char *prop_name, |
828 | int default_val) | |
829 | { | |
830 | int config_node; | |
831 | ||
832 | debug("%s: %s\n", __func__, prop_name); | |
833 | config_node = fdt_path_offset(blob, "/config"); | |
834 | if (config_node < 0) | |
835 | return default_val; | |
836 | return fdtdec_get_int(blob, config_node, prop_name, default_val); | |
837 | } | |
332ab0d5 | 838 | |
79289c0b GB |
839 | int fdtdec_get_config_bool(const void *blob, const char *prop_name) |
840 | { | |
841 | int config_node; | |
842 | const void *prop; | |
843 | ||
844 | debug("%s: %s\n", __func__, prop_name); | |
845 | config_node = fdt_path_offset(blob, "/config"); | |
846 | if (config_node < 0) | |
847 | return 0; | |
848 | prop = fdt_get_property(blob, config_node, prop_name, NULL); | |
849 | ||
850 | return prop != NULL; | |
851 | } | |
852 | ||
332ab0d5 SG |
853 | char *fdtdec_get_config_string(const void *blob, const char *prop_name) |
854 | { | |
855 | const char *nodep; | |
856 | int nodeoffset; | |
857 | int len; | |
858 | ||
859 | debug("%s: %s\n", __func__, prop_name); | |
860 | nodeoffset = fdt_path_offset(blob, "/config"); | |
861 | if (nodeoffset < 0) | |
862 | return NULL; | |
863 | ||
864 | nodep = fdt_getprop(blob, nodeoffset, prop_name, &len); | |
865 | if (!nodep) | |
866 | return NULL; | |
867 | ||
868 | return (char *)nodep; | |
869 | } | |
f20c4619 | 870 | |
76489832 SG |
871 | int fdtdec_decode_region(const void *blob, int node, const char *prop_name, |
872 | fdt_addr_t *basep, fdt_size_t *sizep) | |
f20c4619 SG |
873 | { |
874 | const fdt_addr_t *cell; | |
875 | int len; | |
876 | ||
76489832 SG |
877 | debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL), |
878 | prop_name); | |
f20c4619 | 879 | cell = fdt_getprop(blob, node, prop_name, &len); |
76489832 SG |
880 | if (!cell || (len < sizeof(fdt_addr_t) * 2)) { |
881 | debug("cell=%p, len=%d\n", cell, len); | |
f20c4619 | 882 | return -1; |
76489832 SG |
883 | } |
884 | ||
885 | *basep = fdt_addr_to_cpu(*cell); | |
886 | *sizep = fdt_size_to_cpu(cell[1]); | |
887 | debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep, | |
888 | (ulong)*sizep); | |
f20c4619 | 889 | |
f20c4619 SG |
890 | return 0; |
891 | } | |
006e73b9 SG |
892 | |
893 | /** | |
894 | * Read a flash entry from the fdt | |
895 | * | |
896 | * @param blob FDT blob | |
897 | * @param node Offset of node to read | |
898 | * @param name Name of node being read | |
899 | * @param entry Place to put offset and size of this node | |
900 | * @return 0 if ok, -ve on error | |
901 | */ | |
902 | int fdtdec_read_fmap_entry(const void *blob, int node, const char *name, | |
903 | struct fmap_entry *entry) | |
904 | { | |
f3cc44f9 | 905 | const char *prop; |
006e73b9 SG |
906 | u32 reg[2]; |
907 | ||
908 | if (fdtdec_get_int_array(blob, node, "reg", reg, 2)) { | |
909 | debug("Node '%s' has bad/missing 'reg' property\n", name); | |
910 | return -FDT_ERR_NOTFOUND; | |
911 | } | |
912 | entry->offset = reg[0]; | |
913 | entry->length = reg[1]; | |
f3cc44f9 SG |
914 | entry->used = fdtdec_get_int(blob, node, "used", entry->length); |
915 | prop = fdt_getprop(blob, node, "compress", NULL); | |
916 | entry->compress_algo = prop && !strcmp(prop, "lzo") ? | |
917 | FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE; | |
918 | prop = fdt_getprop(blob, node, "hash", &entry->hash_size); | |
919 | entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE; | |
920 | entry->hash = (uint8_t *)prop; | |
006e73b9 SG |
921 | |
922 | return 0; | |
923 | } | |
56f42242 | 924 | |
5f7bfdd6 | 925 | u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells) |
56f42242 TR |
926 | { |
927 | u64 number = 0; | |
928 | ||
929 | while (cells--) | |
930 | number = (number << 32) | fdt32_to_cpu(*ptr++); | |
931 | ||
932 | return number; | |
933 | } | |
934 | ||
935 | int fdt_get_resource(const void *fdt, int node, const char *property, | |
936 | unsigned int index, struct fdt_resource *res) | |
937 | { | |
938 | const fdt32_t *ptr, *end; | |
939 | int na, ns, len, parent; | |
940 | unsigned int i = 0; | |
941 | ||
942 | parent = fdt_parent_offset(fdt, node); | |
943 | if (parent < 0) | |
944 | return parent; | |
945 | ||
946 | na = fdt_address_cells(fdt, parent); | |
947 | ns = fdt_size_cells(fdt, parent); | |
948 | ||
949 | ptr = fdt_getprop(fdt, node, property, &len); | |
950 | if (!ptr) | |
951 | return len; | |
952 | ||
953 | end = ptr + len / sizeof(*ptr); | |
954 | ||
955 | while (ptr + na + ns <= end) { | |
956 | if (i == index) { | |
957 | res->start = res->end = fdtdec_get_number(ptr, na); | |
958 | res->end += fdtdec_get_number(&ptr[na], ns) - 1; | |
959 | return 0; | |
960 | } | |
961 | ||
962 | ptr += na + ns; | |
963 | i++; | |
964 | } | |
965 | ||
966 | return -FDT_ERR_NOTFOUND; | |
967 | } | |
968 | ||
969 | int fdt_get_named_resource(const void *fdt, int node, const char *property, | |
970 | const char *prop_names, const char *name, | |
971 | struct fdt_resource *res) | |
972 | { | |
973 | int index; | |
974 | ||
975 | index = fdt_find_string(fdt, node, prop_names, name); | |
976 | if (index < 0) | |
977 | return index; | |
978 | ||
979 | return fdt_get_resource(fdt, node, property, index, res); | |
980 | } | |
9f85eee7 | 981 | |
26403871 SG |
982 | int fdtdec_decode_memory_region(const void *blob, int config_node, |
983 | const char *mem_type, const char *suffix, | |
984 | fdt_addr_t *basep, fdt_size_t *sizep) | |
985 | { | |
986 | char prop_name[50]; | |
987 | const char *mem; | |
988 | fdt_size_t size, offset_size; | |
989 | fdt_addr_t base, offset; | |
990 | int node; | |
991 | ||
992 | if (config_node == -1) { | |
993 | config_node = fdt_path_offset(blob, "/config"); | |
994 | if (config_node < 0) { | |
995 | debug("%s: Cannot find /config node\n", __func__); | |
996 | return -ENOENT; | |
997 | } | |
998 | } | |
999 | if (!suffix) | |
1000 | suffix = ""; | |
1001 | ||
1002 | snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type, | |
1003 | suffix); | |
1004 | mem = fdt_getprop(blob, config_node, prop_name, NULL); | |
1005 | if (!mem) { | |
1006 | debug("%s: No memory type for '%s', using /memory\n", __func__, | |
1007 | prop_name); | |
1008 | mem = "/memory"; | |
1009 | } | |
1010 | ||
1011 | node = fdt_path_offset(blob, mem); | |
1012 | if (node < 0) { | |
1013 | debug("%s: Failed to find node '%s': %s\n", __func__, mem, | |
1014 | fdt_strerror(node)); | |
1015 | return -ENOENT; | |
1016 | } | |
1017 | ||
1018 | /* | |
1019 | * Not strictly correct - the memory may have multiple banks. We just | |
1020 | * use the first | |
1021 | */ | |
1022 | if (fdtdec_decode_region(blob, node, "reg", &base, &size)) { | |
1023 | debug("%s: Failed to decode memory region %s\n", __func__, | |
1024 | mem); | |
1025 | return -EINVAL; | |
1026 | } | |
1027 | ||
1028 | snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type, | |
1029 | suffix); | |
1030 | if (fdtdec_decode_region(blob, config_node, prop_name, &offset, | |
1031 | &offset_size)) { | |
1032 | debug("%s: Failed to decode memory region '%s'\n", __func__, | |
1033 | prop_name); | |
1034 | return -EINVAL; | |
1035 | } | |
1036 | ||
1037 | *basep = base + offset; | |
1038 | *sizep = offset_size; | |
1039 | ||
1040 | return 0; | |
1041 | } | |
b45122fd | 1042 | |
12e67114 SG |
1043 | static int decode_timing_property(const void *blob, int node, const char *name, |
1044 | struct timing_entry *result) | |
1045 | { | |
1046 | int length, ret = 0; | |
1047 | const u32 *prop; | |
1048 | ||
1049 | prop = fdt_getprop(blob, node, name, &length); | |
1050 | if (!prop) { | |
1051 | debug("%s: could not find property %s\n", | |
1052 | fdt_get_name(blob, node, NULL), name); | |
1053 | return length; | |
1054 | } | |
1055 | ||
1056 | if (length == sizeof(u32)) { | |
1057 | result->typ = fdtdec_get_int(blob, node, name, 0); | |
1058 | result->min = result->typ; | |
1059 | result->max = result->typ; | |
1060 | } else { | |
1061 | ret = fdtdec_get_int_array(blob, node, name, &result->min, 3); | |
1062 | } | |
1063 | ||
1064 | return ret; | |
1065 | } | |
1066 | ||
1067 | int fdtdec_decode_display_timing(const void *blob, int parent, int index, | |
1068 | struct display_timing *dt) | |
1069 | { | |
1070 | int i, node, timings_node; | |
1071 | u32 val = 0; | |
1072 | int ret = 0; | |
1073 | ||
1074 | timings_node = fdt_subnode_offset(blob, parent, "display-timings"); | |
1075 | if (timings_node < 0) | |
1076 | return timings_node; | |
1077 | ||
1078 | for (i = 0, node = fdt_first_subnode(blob, timings_node); | |
1079 | node > 0 && i != index; | |
1080 | node = fdt_next_subnode(blob, node)) | |
1081 | i++; | |
1082 | ||
1083 | if (node < 0) | |
1084 | return node; | |
1085 | ||
1086 | memset(dt, 0, sizeof(*dt)); | |
1087 | ||
1088 | ret |= decode_timing_property(blob, node, "hback-porch", | |
1089 | &dt->hback_porch); | |
1090 | ret |= decode_timing_property(blob, node, "hfront-porch", | |
1091 | &dt->hfront_porch); | |
1092 | ret |= decode_timing_property(blob, node, "hactive", &dt->hactive); | |
1093 | ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len); | |
1094 | ret |= decode_timing_property(blob, node, "vback-porch", | |
1095 | &dt->vback_porch); | |
1096 | ret |= decode_timing_property(blob, node, "vfront-porch", | |
1097 | &dt->vfront_porch); | |
1098 | ret |= decode_timing_property(blob, node, "vactive", &dt->vactive); | |
1099 | ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len); | |
1100 | ret |= decode_timing_property(blob, node, "clock-frequency", | |
1101 | &dt->pixelclock); | |
1102 | ||
1103 | dt->flags = 0; | |
1104 | val = fdtdec_get_int(blob, node, "vsync-active", -1); | |
1105 | if (val != -1) { | |
1106 | dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH : | |
1107 | DISPLAY_FLAGS_VSYNC_LOW; | |
1108 | } | |
1109 | val = fdtdec_get_int(blob, node, "hsync-active", -1); | |
1110 | if (val != -1) { | |
1111 | dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH : | |
1112 | DISPLAY_FLAGS_HSYNC_LOW; | |
1113 | } | |
1114 | val = fdtdec_get_int(blob, node, "de-active", -1); | |
1115 | if (val != -1) { | |
1116 | dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH : | |
1117 | DISPLAY_FLAGS_DE_LOW; | |
1118 | } | |
1119 | val = fdtdec_get_int(blob, node, "pixelclk-active", -1); | |
1120 | if (val != -1) { | |
1121 | dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE : | |
1122 | DISPLAY_FLAGS_PIXDATA_NEGEDGE; | |
1123 | } | |
1124 | ||
1125 | if (fdtdec_get_bool(blob, node, "interlaced")) | |
1126 | dt->flags |= DISPLAY_FLAGS_INTERLACED; | |
1127 | if (fdtdec_get_bool(blob, node, "doublescan")) | |
1128 | dt->flags |= DISPLAY_FLAGS_DOUBLESCAN; | |
1129 | if (fdtdec_get_bool(blob, node, "doubleclk")) | |
1130 | dt->flags |= DISPLAY_FLAGS_DOUBLECLK; | |
1131 | ||
1132 | return 0; | |
1133 | } | |
1134 | ||
0879361f | 1135 | int fdtdec_setup(void) |
b45122fd SG |
1136 | { |
1137 | #ifdef CONFIG_OF_CONTROL | |
1138 | # ifdef CONFIG_OF_EMBED | |
1139 | /* Get a pointer to the FDT */ | |
1140 | gd->fdt_blob = __dtb_dt_begin; | |
1141 | # elif defined CONFIG_OF_SEPARATE | |
1142 | # ifdef CONFIG_SPL_BUILD | |
1143 | /* FDT is at end of BSS */ | |
1144 | gd->fdt_blob = (ulong *)&__bss_end; | |
1145 | # else | |
1146 | /* FDT is at end of image */ | |
1147 | gd->fdt_blob = (ulong *)&_end; | |
1148 | #endif | |
1149 | # elif defined(CONFIG_OF_HOSTFILE) | |
1150 | if (sandbox_read_fdt_from_file()) { | |
1151 | puts("Failed to read control FDT\n"); | |
1152 | return -1; | |
1153 | } | |
1154 | # endif | |
1155 | # ifndef CONFIG_SPL_BUILD | |
1156 | /* Allow the early environment to override the fdt address */ | |
1157 | gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, | |
1158 | (uintptr_t)gd->fdt_blob); | |
1159 | # endif | |
29a23f9d | 1160 | #endif |
0879361f | 1161 | return fdtdec_prepare_fdt(); |
b45122fd SG |
1162 | } |
1163 | ||
1164 | #endif /* !USE_HOSTCC */ |