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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>"), |
0e35ad05 JZ |
25 | COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"), |
26 | COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"), | |
6642a681 | 27 | COMPAT(NVIDIA_TEGRA20_KBC, "nvidia,tegra20-kbc"), |
312693c3 | 28 | COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"), |
e1ae0d1f | 29 | COMPAT(NVIDIA_TEGRA20_PWM, "nvidia,tegra20-pwm"), |
00f37327 SG |
30 | COMPAT(NVIDIA_TEGRA124_DC, "nvidia,tegra124-dc"), |
31 | COMPAT(NVIDIA_TEGRA124_SOR, "nvidia,tegra124-sor"), | |
32 | COMPAT(NVIDIA_TEGRA124_PMC, "nvidia,tegra124-pmc"), | |
87540de3 | 33 | COMPAT(NVIDIA_TEGRA20_DC, "nvidia,tegra20-dc"), |
a73ca478 | 34 | COMPAT(NVIDIA_TEGRA124_SDMMC, "nvidia,tegra124-sdhci"), |
f4e4e0b0 | 35 | COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"), |
c9aa831e | 36 | COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"), |
f315828b TR |
37 | COMPAT(NVIDIA_TEGRA124_PCIE, "nvidia,tegra124-pcie"), |
38 | COMPAT(NVIDIA_TEGRA30_PCIE, "nvidia,tegra30-pcie"), | |
39 | COMPAT(NVIDIA_TEGRA20_PCIE, "nvidia,tegra20-pcie"), | |
79c7a90f | 40 | COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"), |
cc9fe33a HR |
41 | COMPAT(SMSC_LAN9215, "smsc,lan9215"), |
42 | COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"), | |
c34253d1 | 43 | COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"), |
72dbff12 RS |
44 | COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"), |
45 | COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"), | |
713cb680 | 46 | COMPAT(GOOGLE_CROS_EC_KEYB, "google,cros-ec-keyb"), |
6abd1620 | 47 | COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"), |
108b85be | 48 | COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"), |
618766c0 | 49 | COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"), |
d7377b51 | 50 | COMPAT(SAMSUNG_EXYNOS_FIMD, "samsung,exynos-fimd"), |
de461c52 | 51 | COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"), |
1e4706a7 | 52 | COMPAT(SAMSUNG_EXYNOS5_DP, "samsung,exynos5-dp"), |
7d3ca0f8 | 53 | COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"), |
3577fe8b | 54 | COMPAT(SAMSUNG_EXYNOS_MMC, "samsung,exynos-mmc"), |
ee1e3c2f | 55 | COMPAT(SAMSUNG_EXYNOS_SERIAL, "samsung,exynos4210-uart"), |
f37df0f8 | 56 | COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686"), |
bb8215f4 | 57 | COMPAT(GENERIC_SPI_FLASH, "spi-flash"), |
7772bb78 | 58 | COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"), |
f6267998 | 59 | COMPAT(INFINEON_SLB9635_TPM, "infineon,slb9635-tpm"), |
f0e57b1b | 60 | COMPAT(INFINEON_SLB9645_TPM, "infineon,slb9645tt"), |
ecbd7e1e | 61 | COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"), |
7d95f2a3 | 62 | COMPAT(SANDBOX_LCD_SDL, "sandbox,lcd-sdl"), |
ac1058fd | 63 | COMPAT(TI_TPS65090, "ti,tps65090"), |
a9cf6da9 | 64 | COMPAT(COMPAT_NXP_PTN3460, "nxp,ptn3460"), |
45c480c9 | 65 | COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"), |
9e8f664e | 66 | COMPAT(PARADE_PS8625, "parade,ps8625"), |
77f9b1fb | 67 | COMPAT(INTEL_MICROCODE, "intel,microcode"), |
65dd74a6 | 68 | COMPAT(MEMORY_SPD, "memory-spd"), |
3ac83935 | 69 | COMPAT(INTEL_PANTHERPOINT_AHCI, "intel,pantherpoint-ahci"), |
bb80be39 | 70 | COMPAT(INTEL_MODEL_206AX, "intel,model-206ax"), |
effcf067 | 71 | COMPAT(INTEL_GMA, "intel,gma"), |
6173c45b | 72 | COMPAT(AMS_AS3722, "ams,as3722"), |
5da38086 | 73 | COMPAT(INTEL_ICH_SPI, "intel,ich-spi"), |
c89ada01 | 74 | COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"), |
5318f18d | 75 | COMPAT(INTEL_X86_PINCTRL, "intel,x86-pinctrl"), |
6462cded | 76 | COMPAT(SOCIONEXT_XHCI, "socionext,uniphier-xhci"), |
90b16d14 | 77 | COMPAT(COMPAT_INTEL_PCH, "intel,bd82x6x"), |
9c7dea60 | 78 | COMPAT(COMPAT_INTEL_IRQ_ROUTER, "intel,irq-router"), |
b5220bc6 SG |
79 | }; |
80 | ||
a53f4a29 SG |
81 | const 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 | ||
4397a2a8 SG |
88 | fdt_addr_t fdtdec_get_addr_size(const void *blob, int node, |
89 | const char *prop_name, fdt_size_t *sizep) | |
b5220bc6 | 90 | { |
5b344360 TR |
91 | const fdt32_t *ptr, *end; |
92 | int parent, na, ns, len; | |
93 | fdt_addr_t addr; | |
b5220bc6 | 94 | |
1cb2323b | 95 | debug("%s: %s: ", __func__, prop_name); |
5b344360 TR |
96 | |
97 | parent = fdt_parent_offset(blob, node); | |
98 | if (parent < 0) { | |
99 | debug("(no parent found)\n"); | |
100 | return FDT_ADDR_T_NONE; | |
1cb2323b | 101 | } |
5b344360 TR |
102 | |
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; | |
b5220bc6 SG |
130 | } |
131 | ||
4397a2a8 SG |
132 | fdt_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 | ||
a62e84d7 BM |
138 | #ifdef CONFIG_PCI |
139 | int 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 | ||
106cce96 SG |
178 | if (i == num) { |
179 | ret = -ENXIO; | |
a62e84d7 | 180 | goto fail; |
106cce96 | 181 | } |
a62e84d7 BM |
182 | |
183 | return 0; | |
184 | } else { | |
185 | ret = -EINVAL; | |
186 | } | |
187 | ||
188 | fail: | |
189 | debug("(not found)\n"); | |
190 | return ret; | |
191 | } | |
192 | ||
193 | int 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 | ||
232 | int 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 | ||
273 | int 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 | ||
aadef0a1 CLC |
297 | uint64_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 | ||
f88fe2de | 310 | int fdtdec_get_is_enabled(const void *blob, int node) |
b5220bc6 SG |
311 | { |
312 | const char *cell; | |
313 | ||
f88fe2de SG |
314 | /* |
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 | */ | |
b5220bc6 SG |
321 | cell = fdt_getprop(blob, node, "status", NULL); |
322 | if (cell) | |
f88fe2de SG |
323 | return 0 == strcmp(cell, "okay"); |
324 | return 1; | |
b5220bc6 SG |
325 | } |
326 | ||
7cde397b | 327 | enum fdt_compat_id fdtdec_lookup(const void *blob, int node) |
b5220bc6 SG |
328 | { |
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 | ||
339 | int 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 | ||
3ddecfc7 SG |
345 | int 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 | ||
b5220bc6 SG |
360 | int 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); | |
00878476 | 370 | node = fdt_path_offset(blob, str); |
b5220bc6 SG |
371 | if (node < 0) |
372 | return node; | |
373 | err = fdt_node_check_compatible(blob, node, compat_names[id]); | |
374 | if (err < 0) | |
375 | return err; | |
f88fe2de SG |
376 | if (err) |
377 | return -FDT_ERR_NOTFOUND; | |
378 | (*upto)++; | |
379 | return node; | |
b5220bc6 SG |
380 | } |
381 | ||
a53f4a29 SG |
382 | int fdtdec_find_aliases_for_id(const void *blob, const char *name, |
383 | enum fdt_compat_id id, int *node_list, int maxcount) | |
c6782270 SG |
384 | { |
385 | 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? */ | |
391 | int fdtdec_add_aliases_for_id(const void *blob, const char *name, | |
392 | enum fdt_compat_id id, int *node_list, int maxcount) | |
a53f4a29 SG |
393 | { |
394 | 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 */ | |
a53f4a29 SG |
422 | 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)) { | |
c6782270 SG |
468 | 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 | } | |
a53f4a29 SG |
476 | node_list[number] = node; |
477 | if (number >= num_found) | |
478 | num_found = number + 1; | |
479 | } | |
c6782270 | 480 | nodes[found] = 0; |
a53f4a29 SG |
481 | } |
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 | ||
5c33c9fd SG |
505 | int 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; | |
c4af6732 | 524 | int len, val; |
5c33c9fd SG |
525 | |
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; | |
c4af6732 SG |
535 | val = trailing_strtol(name); |
536 | if (val != -1) { | |
537 | *seqp = val; | |
538 | debug("Found seq %d\n", *seqp); | |
539 | return 0; | |
5c33c9fd SG |
540 | } |
541 | } | |
542 | ||
543 | debug("Not found\n"); | |
544 | return -ENOENT; | |
545 | } | |
546 | ||
aac07d49 SG |
547 | int 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 | ||
9a263e55 SG |
562 | int 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 | ||
b5220bc6 SG |
574 | /* |
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 | */ | |
9a263e55 | 579 | int fdtdec_prepare_fdt(void) |
b5220bc6 | 580 | { |
c309c2da SG |
581 | if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) || |
582 | fdt_check_header(gd->fdt_blob)) { | |
66312374 SG |
583 | #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"); | |
cb5f97f7 SG |
587 | # 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 | |
66312374 | 594 | #endif |
9a263e55 SG |
595 | return -1; |
596 | } | |
b5220bc6 SG |
597 | return 0; |
598 | } | |
d17da655 SG |
599 | |
600 | int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name) | |
601 | { | |
602 | const u32 *phandle; | |
603 | int lookup; | |
604 | ||
1cb2323b | 605 | debug("%s: %s\n", __func__, prop_name); |
d17da655 SG |
606 | 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 | */ | |
625 | static 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 | ||
642 | int 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 | ||
a9f04d49 SG |
658 | int 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 | ||
96875e7d SG |
678 | const 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 | ||
d17da655 SG |
689 | int 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 | } | |
ed3ee5cd | 698 | |
57068a7a SG |
699 | int 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 | ||
bed4d892 AS |
823 | int 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 | ||
835 | const 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 | } | |
09258f1e | 846 | |
09258f1e AK |
847 | int 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 | } | |
332ab0d5 | 858 | |
79289c0b GB |
859 | int 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 | ||
332ab0d5 SG |
873 | char *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 | } | |
f20c4619 | 890 | |
76489832 SG |
891 | int fdtdec_decode_region(const void *blob, int node, const char *prop_name, |
892 | fdt_addr_t *basep, fdt_size_t *sizep) | |
f20c4619 SG |
893 | { |
894 | const fdt_addr_t *cell; | |
895 | int len; | |
896 | ||
76489832 SG |
897 | debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL), |
898 | prop_name); | |
f20c4619 | 899 | cell = fdt_getprop(blob, node, prop_name, &len); |
76489832 SG |
900 | if (!cell || (len < sizeof(fdt_addr_t) * 2)) { |
901 | debug("cell=%p, len=%d\n", cell, len); | |
f20c4619 | 902 | return -1; |
76489832 SG |
903 | } |
904 | ||
905 | *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); | |
f20c4619 | 909 | |
f20c4619 SG |
910 | return 0; |
911 | } | |
006e73b9 SG |
912 | |
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 | */ | |
922 | int fdtdec_read_fmap_entry(const void *blob, int node, const char *name, | |
923 | struct fmap_entry *entry) | |
924 | { | |
f3cc44f9 | 925 | const char *prop; |
006e73b9 SG |
926 | 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]; | |
f3cc44f9 SG |
934 | 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; | |
006e73b9 SG |
941 | |
942 | return 0; | |
943 | } | |
56f42242 | 944 | |
5f7bfdd6 | 945 | u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells) |
56f42242 TR |
946 | { |
947 | u64 number = 0; | |
948 | ||
949 | while (cells--) | |
950 | number = (number << 32) | fdt32_to_cpu(*ptr++); | |
951 | ||
952 | return number; | |
953 | } | |
954 | ||
955 | int 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 | ||
989 | int 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 | } | |
9f85eee7 | 1001 | |
26403871 SG |
1002 | int 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 | } | |
b45122fd | 1062 | |
12e67114 SG |
1063 | static 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 | ||
1087 | int 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 | ||
0879361f | 1155 | int fdtdec_setup(void) |
b45122fd SG |
1156 | { |
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; | |
1168 | #endif | |
1169 | # 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 | |
29a23f9d | 1180 | #endif |
0879361f | 1181 | return fdtdec_prepare_fdt(); |
b45122fd SG |
1182 | } |
1183 | ||
1184 | #endif /* !USE_HOSTCC */ |