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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> |
fcc0a877 | 8 | #include <dm.h> |
5c33c9fd | 9 | #include <errno.h> |
b5220bc6 SG |
10 | #include <serial.h> |
11 | #include <libfdt.h> | |
12 | #include <fdtdec.h> | |
b45122fd | 13 | #include <asm/sections.h> |
5c33c9fd | 14 | #include <linux/ctype.h> |
b5220bc6 SG |
15 | |
16 | DECLARE_GLOBAL_DATA_PTR; | |
17 | ||
18 | /* | |
19 | * Here are the type we know about. One day we might allow drivers to | |
20 | * register. For now we just put them here. The COMPAT macro allows us to | |
21 | * turn this into a sparse list later, and keeps the ID with the name. | |
22 | */ | |
23 | #define COMPAT(id, name) name | |
24 | static const char * const compat_names[COMPAT_COUNT] = { | |
f88fe2de | 25 | COMPAT(UNKNOWN, "<none>"), |
0e35ad05 JZ |
26 | COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"), |
27 | COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"), | |
312693c3 | 28 | COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"), |
e1ae0d1f | 29 | COMPAT(NVIDIA_TEGRA20_PWM, "nvidia,tegra20-pwm"), |
00f37327 SG |
30 | COMPAT(NVIDIA_TEGRA124_SOR, "nvidia,tegra124-sor"), |
31 | COMPAT(NVIDIA_TEGRA124_PMC, "nvidia,tegra124-pmc"), | |
87540de3 | 32 | COMPAT(NVIDIA_TEGRA20_DC, "nvidia,tegra20-dc"), |
7aaa5a60 | 33 | COMPAT(NVIDIA_TEGRA210_SDMMC, "nvidia,tegra210-sdhci"), |
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"), |
79c7a90f | 37 | COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"), |
7aaa5a60 | 38 | COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"), |
cc9fe33a HR |
39 | COMPAT(SMSC_LAN9215, "smsc,lan9215"), |
40 | COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"), | |
c34253d1 | 41 | COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"), |
72dbff12 RS |
42 | COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"), |
43 | COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"), | |
713cb680 | 44 | COMPAT(GOOGLE_CROS_EC_KEYB, "google,cros-ec-keyb"), |
6abd1620 | 45 | COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"), |
108b85be | 46 | COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"), |
618766c0 | 47 | COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"), |
d7377b51 | 48 | COMPAT(SAMSUNG_EXYNOS_FIMD, "samsung,exynos-fimd"), |
de461c52 | 49 | COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"), |
1e4706a7 | 50 | COMPAT(SAMSUNG_EXYNOS5_DP, "samsung,exynos5-dp"), |
7d3ca0f8 | 51 | COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"), |
3577fe8b | 52 | COMPAT(SAMSUNG_EXYNOS_MMC, "samsung,exynos-mmc"), |
ee1e3c2f | 53 | COMPAT(SAMSUNG_EXYNOS_SERIAL, "samsung,exynos4210-uart"), |
f37df0f8 | 54 | COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686"), |
bb8215f4 | 55 | COMPAT(GENERIC_SPI_FLASH, "spi-flash"), |
7772bb78 | 56 | COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"), |
ecbd7e1e | 57 | COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"), |
45c480c9 | 58 | COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"), |
77f9b1fb | 59 | COMPAT(INTEL_MICROCODE, "intel,microcode"), |
65dd74a6 | 60 | COMPAT(MEMORY_SPD, "memory-spd"), |
3ac83935 | 61 | COMPAT(INTEL_PANTHERPOINT_AHCI, "intel,pantherpoint-ahci"), |
bb80be39 | 62 | COMPAT(INTEL_MODEL_206AX, "intel,model-206ax"), |
effcf067 | 63 | COMPAT(INTEL_GMA, "intel,gma"), |
6173c45b | 64 | COMPAT(AMS_AS3722, "ams,as3722"), |
5da38086 | 65 | COMPAT(INTEL_ICH_SPI, "intel,ich-spi"), |
c89ada01 | 66 | COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"), |
5318f18d | 67 | COMPAT(INTEL_X86_PINCTRL, "intel,x86-pinctrl"), |
6462cded | 68 | COMPAT(SOCIONEXT_XHCI, "socionext,uniphier-xhci"), |
90b16d14 | 69 | COMPAT(COMPAT_INTEL_PCH, "intel,bd82x6x"), |
6ab00db2 | 70 | COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"), |
129adf5b | 71 | COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"), |
ef4b01b2 | 72 | COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"), |
f3b84a30 AB |
73 | COMPAT(COMPAT_INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"), |
74 | COMPAT(COMPAT_INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"), | |
394e0b66 | 75 | COMPAT(COMPAT_INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"), |
b5220bc6 SG |
76 | }; |
77 | ||
a53f4a29 SG |
78 | const char *fdtdec_get_compatible(enum fdt_compat_id id) |
79 | { | |
80 | /* We allow reading of the 'unknown' ID for testing purposes */ | |
81 | assert(id >= 0 && id < COMPAT_COUNT); | |
82 | return compat_names[id]; | |
83 | } | |
84 | ||
02464e38 SW |
85 | fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node, |
86 | const char *prop_name, int index, int na, int ns, | |
87 | fdt_size_t *sizep) | |
b5220bc6 | 88 | { |
02464e38 SW |
89 | const fdt32_t *prop, *prop_end; |
90 | const fdt32_t *prop_addr, *prop_size, *prop_after_size; | |
236efe36 | 91 | int len; |
02464e38 | 92 | fdt_addr_t addr; |
b5220bc6 | 93 | |
1cb2323b | 94 | debug("%s: %s: ", __func__, prop_name); |
02464e38 SW |
95 | |
96 | if (na > (sizeof(fdt_addr_t) / sizeof(fdt32_t))) { | |
97 | debug("(na too large for fdt_addr_t type)\n"); | |
98 | return FDT_ADDR_T_NONE; | |
99 | } | |
100 | ||
101 | if (ns > (sizeof(fdt_size_t) / sizeof(fdt32_t))) { | |
102 | debug("(ns too large for fdt_size_t type)\n"); | |
103 | return FDT_ADDR_T_NONE; | |
104 | } | |
105 | ||
106 | prop = fdt_getprop(blob, node, prop_name, &len); | |
107 | if (!prop) { | |
108 | debug("(not found)\n"); | |
109 | return FDT_ADDR_T_NONE; | |
110 | } | |
111 | prop_end = prop + (len / sizeof(*prop)); | |
112 | ||
113 | prop_addr = prop + (index * (na + ns)); | |
114 | prop_size = prop_addr + na; | |
115 | prop_after_size = prop_size + ns; | |
116 | if (prop_after_size > prop_end) { | |
117 | debug("(not enough data: expected >= %d cells, got %d cells)\n", | |
118 | (u32)(prop_after_size - prop), ((u32)(prop_end - prop))); | |
119 | return FDT_ADDR_T_NONE; | |
120 | } | |
121 | ||
122 | addr = fdtdec_get_number(prop_addr, na); | |
123 | ||
124 | if (sizep) { | |
125 | *sizep = fdtdec_get_number(prop_size, ns); | |
126 | debug("addr=%08llx, size=%llx\n", (u64)addr, (u64)*sizep); | |
127 | } else { | |
128 | debug("addr=%08llx\n", (u64)addr); | |
129 | } | |
130 | ||
131 | return addr; | |
132 | } | |
133 | ||
134 | fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent, | |
135 | int node, const char *prop_name, int index, fdt_size_t *sizep) | |
136 | { | |
137 | int na, ns; | |
138 | ||
139 | debug("%s: ", __func__); | |
140 | ||
141 | na = fdt_address_cells(blob, parent); | |
142 | if (na < 1) { | |
143 | debug("(bad #address-cells)\n"); | |
144 | return FDT_ADDR_T_NONE; | |
145 | } | |
146 | ||
147 | ns = fdt_size_cells(blob, parent); | |
ff0a6358 | 148 | if (ns < 0) { |
02464e38 SW |
149 | debug("(bad #size-cells)\n"); |
150 | return FDT_ADDR_T_NONE; | |
151 | } | |
152 | ||
153 | debug("na=%d, ns=%d, ", na, ns); | |
154 | ||
155 | return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na, | |
156 | ns, sizep); | |
157 | } | |
158 | ||
159 | fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node, | |
160 | const char *prop_name, int index, fdt_size_t *sizep) | |
161 | { | |
162 | int parent; | |
163 | ||
164 | debug("%s: ", __func__); | |
165 | ||
166 | parent = fdt_parent_offset(blob, node); | |
167 | if (parent < 0) { | |
168 | debug("(no parent found)\n"); | |
169 | return FDT_ADDR_T_NONE; | |
5b344360 | 170 | } |
02464e38 SW |
171 | |
172 | return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name, | |
173 | index, sizep); | |
174 | } | |
175 | ||
176 | fdt_addr_t fdtdec_get_addr_size(const void *blob, int node, | |
177 | const char *prop_name, fdt_size_t *sizep) | |
178 | { | |
d93b9a07 SW |
179 | int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0; |
180 | ||
02464e38 SW |
181 | return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0, |
182 | sizeof(fdt_addr_t) / sizeof(fdt32_t), | |
d93b9a07 | 183 | ns, sizep); |
b5220bc6 SG |
184 | } |
185 | ||
4397a2a8 SG |
186 | fdt_addr_t fdtdec_get_addr(const void *blob, int node, |
187 | const char *prop_name) | |
188 | { | |
189 | return fdtdec_get_addr_size(blob, node, prop_name, NULL); | |
190 | } | |
191 | ||
fcc0a877 | 192 | #if defined(CONFIG_PCI) && defined(CONFIG_DM_PCI) |
a62e84d7 BM |
193 | int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type, |
194 | const char *prop_name, struct fdt_pci_addr *addr) | |
195 | { | |
196 | const u32 *cell; | |
197 | int len; | |
198 | int ret = -ENOENT; | |
199 | ||
200 | debug("%s: %s: ", __func__, prop_name); | |
201 | ||
202 | /* | |
203 | * If we follow the pci bus bindings strictly, we should check | |
204 | * the value of the node's parent node's #address-cells and | |
205 | * #size-cells. They need to be 3 and 2 accordingly. However, | |
206 | * for simplicity we skip the check here. | |
207 | */ | |
208 | cell = fdt_getprop(blob, node, prop_name, &len); | |
209 | if (!cell) | |
210 | goto fail; | |
211 | ||
212 | if ((len % FDT_PCI_REG_SIZE) == 0) { | |
213 | int num = len / FDT_PCI_REG_SIZE; | |
214 | int i; | |
215 | ||
216 | for (i = 0; i < num; i++) { | |
217 | debug("pci address #%d: %08lx %08lx %08lx\n", i, | |
4ea5243a SW |
218 | (ulong)fdt32_to_cpu(cell[0]), |
219 | (ulong)fdt32_to_cpu(cell[1]), | |
220 | (ulong)fdt32_to_cpu(cell[2])); | |
221 | if ((fdt32_to_cpu(*cell) & type) == type) { | |
222 | addr->phys_hi = fdt32_to_cpu(cell[0]); | |
223 | addr->phys_mid = fdt32_to_cpu(cell[1]); | |
224 | addr->phys_lo = fdt32_to_cpu(cell[1]); | |
a62e84d7 BM |
225 | break; |
226 | } else { | |
227 | cell += (FDT_PCI_ADDR_CELLS + | |
228 | FDT_PCI_SIZE_CELLS); | |
229 | } | |
230 | } | |
231 | ||
106cce96 SG |
232 | if (i == num) { |
233 | ret = -ENXIO; | |
a62e84d7 | 234 | goto fail; |
106cce96 | 235 | } |
a62e84d7 BM |
236 | |
237 | return 0; | |
238 | } else { | |
239 | ret = -EINVAL; | |
240 | } | |
241 | ||
242 | fail: | |
243 | debug("(not found)\n"); | |
244 | return ret; | |
245 | } | |
246 | ||
247 | int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device) | |
248 | { | |
249 | const char *list, *end; | |
250 | int len; | |
251 | ||
252 | list = fdt_getprop(blob, node, "compatible", &len); | |
253 | if (!list) | |
254 | return -ENOENT; | |
255 | ||
256 | end = list + len; | |
257 | while (list < end) { | |
258 | char *s; | |
259 | ||
260 | len = strlen(list); | |
261 | if (len >= strlen("pciVVVV,DDDD")) { | |
262 | s = strstr(list, "pci"); | |
263 | ||
264 | /* | |
265 | * check if the string is something like pciVVVV,DDDD.RR | |
266 | * or just pciVVVV,DDDD | |
267 | */ | |
268 | if (s && s[7] == ',' && | |
269 | (s[12] == '.' || s[12] == 0)) { | |
270 | s += 3; | |
271 | *vendor = simple_strtol(s, NULL, 16); | |
272 | ||
273 | s += 5; | |
274 | *device = simple_strtol(s, NULL, 16); | |
275 | ||
276 | return 0; | |
277 | } | |
a62e84d7 | 278 | } |
bc6351eb | 279 | list += (len + 1); |
a62e84d7 BM |
280 | } |
281 | ||
282 | return -ENOENT; | |
283 | } | |
284 | ||
fcc0a877 SG |
285 | int fdtdec_get_pci_bar32(struct udevice *dev, struct fdt_pci_addr *addr, |
286 | u32 *bar) | |
a62e84d7 | 287 | { |
a62e84d7 | 288 | int barnum; |
a62e84d7 BM |
289 | |
290 | /* extract the bar number from fdt_pci_addr */ | |
291 | barnum = addr->phys_hi & 0xff; | |
292 | if ((barnum < PCI_BASE_ADDRESS_0) || (barnum > PCI_CARDBUS_CIS)) | |
293 | return -EINVAL; | |
294 | ||
295 | barnum = (barnum - PCI_BASE_ADDRESS_0) / 4; | |
fcc0a877 | 296 | *bar = dm_pci_read_bar32(dev, barnum); |
a62e84d7 BM |
297 | |
298 | return 0; | |
299 | } | |
300 | #endif | |
301 | ||
aadef0a1 CLC |
302 | uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name, |
303 | uint64_t default_val) | |
304 | { | |
305 | const uint64_t *cell64; | |
306 | int length; | |
307 | ||
308 | cell64 = fdt_getprop(blob, node, prop_name, &length); | |
309 | if (!cell64 || length < sizeof(*cell64)) | |
310 | return default_val; | |
311 | ||
312 | return fdt64_to_cpu(*cell64); | |
313 | } | |
314 | ||
f88fe2de | 315 | int fdtdec_get_is_enabled(const void *blob, int node) |
b5220bc6 SG |
316 | { |
317 | const char *cell; | |
318 | ||
f88fe2de SG |
319 | /* |
320 | * It should say "okay", so only allow that. Some fdts use "ok" but | |
321 | * this is a bug. Please fix your device tree source file. See here | |
322 | * for discussion: | |
323 | * | |
324 | * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html | |
325 | */ | |
b5220bc6 SG |
326 | cell = fdt_getprop(blob, node, "status", NULL); |
327 | if (cell) | |
f88fe2de SG |
328 | return 0 == strcmp(cell, "okay"); |
329 | return 1; | |
b5220bc6 SG |
330 | } |
331 | ||
7cde397b | 332 | enum fdt_compat_id fdtdec_lookup(const void *blob, int node) |
b5220bc6 SG |
333 | { |
334 | enum fdt_compat_id id; | |
335 | ||
336 | /* Search our drivers */ | |
337 | for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++) | |
338 | if (0 == fdt_node_check_compatible(blob, node, | |
339 | compat_names[id])) | |
340 | return id; | |
341 | return COMPAT_UNKNOWN; | |
342 | } | |
343 | ||
344 | int fdtdec_next_compatible(const void *blob, int node, | |
345 | enum fdt_compat_id id) | |
346 | { | |
347 | return fdt_node_offset_by_compatible(blob, node, compat_names[id]); | |
348 | } | |
349 | ||
3ddecfc7 SG |
350 | int fdtdec_next_compatible_subnode(const void *blob, int node, |
351 | enum fdt_compat_id id, int *depthp) | |
352 | { | |
353 | do { | |
354 | node = fdt_next_node(blob, node, depthp); | |
355 | } while (*depthp > 1); | |
356 | ||
357 | /* If this is a direct subnode, and compatible, return it */ | |
358 | if (*depthp == 1 && 0 == fdt_node_check_compatible( | |
359 | blob, node, compat_names[id])) | |
360 | return node; | |
361 | ||
362 | return -FDT_ERR_NOTFOUND; | |
363 | } | |
364 | ||
b5220bc6 SG |
365 | int fdtdec_next_alias(const void *blob, const char *name, |
366 | enum fdt_compat_id id, int *upto) | |
367 | { | |
368 | #define MAX_STR_LEN 20 | |
369 | char str[MAX_STR_LEN + 20]; | |
370 | int node, err; | |
371 | ||
372 | /* snprintf() is not available */ | |
373 | assert(strlen(name) < MAX_STR_LEN); | |
374 | sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto); | |
00878476 | 375 | node = fdt_path_offset(blob, str); |
b5220bc6 SG |
376 | if (node < 0) |
377 | return node; | |
378 | err = fdt_node_check_compatible(blob, node, compat_names[id]); | |
379 | if (err < 0) | |
380 | return err; | |
f88fe2de SG |
381 | if (err) |
382 | return -FDT_ERR_NOTFOUND; | |
383 | (*upto)++; | |
384 | return node; | |
b5220bc6 SG |
385 | } |
386 | ||
a53f4a29 SG |
387 | int fdtdec_find_aliases_for_id(const void *blob, const char *name, |
388 | enum fdt_compat_id id, int *node_list, int maxcount) | |
c6782270 SG |
389 | { |
390 | memset(node_list, '\0', sizeof(*node_list) * maxcount); | |
391 | ||
392 | return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount); | |
393 | } | |
394 | ||
395 | /* TODO: Can we tighten this code up a little? */ | |
396 | int fdtdec_add_aliases_for_id(const void *blob, const char *name, | |
397 | enum fdt_compat_id id, int *node_list, int maxcount) | |
a53f4a29 SG |
398 | { |
399 | int name_len = strlen(name); | |
400 | int nodes[maxcount]; | |
401 | int num_found = 0; | |
402 | int offset, node; | |
403 | int alias_node; | |
404 | int count; | |
405 | int i, j; | |
406 | ||
407 | /* find the alias node if present */ | |
408 | alias_node = fdt_path_offset(blob, "/aliases"); | |
409 | ||
410 | /* | |
411 | * start with nothing, and we can assume that the root node can't | |
412 | * match | |
413 | */ | |
414 | memset(nodes, '\0', sizeof(nodes)); | |
415 | ||
416 | /* First find all the compatible nodes */ | |
417 | for (node = count = 0; node >= 0 && count < maxcount;) { | |
418 | node = fdtdec_next_compatible(blob, node, id); | |
419 | if (node >= 0) | |
420 | nodes[count++] = node; | |
421 | } | |
422 | if (node >= 0) | |
423 | debug("%s: warning: maxcount exceeded with alias '%s'\n", | |
424 | __func__, name); | |
425 | ||
426 | /* Now find all the aliases */ | |
a53f4a29 SG |
427 | for (offset = fdt_first_property_offset(blob, alias_node); |
428 | offset > 0; | |
429 | offset = fdt_next_property_offset(blob, offset)) { | |
430 | const struct fdt_property *prop; | |
431 | const char *path; | |
432 | int number; | |
433 | int found; | |
434 | ||
435 | node = 0; | |
436 | prop = fdt_get_property_by_offset(blob, offset, NULL); | |
437 | path = fdt_string(blob, fdt32_to_cpu(prop->nameoff)); | |
438 | if (prop->len && 0 == strncmp(path, name, name_len)) | |
439 | node = fdt_path_offset(blob, prop->data); | |
440 | if (node <= 0) | |
441 | continue; | |
442 | ||
443 | /* Get the alias number */ | |
444 | number = simple_strtoul(path + name_len, NULL, 10); | |
445 | if (number < 0 || number >= maxcount) { | |
446 | debug("%s: warning: alias '%s' is out of range\n", | |
447 | __func__, path); | |
448 | continue; | |
449 | } | |
450 | ||
451 | /* Make sure the node we found is actually in our list! */ | |
452 | found = -1; | |
453 | for (j = 0; j < count; j++) | |
454 | if (nodes[j] == node) { | |
455 | found = j; | |
456 | break; | |
457 | } | |
458 | ||
459 | if (found == -1) { | |
460 | debug("%s: warning: alias '%s' points to a node " | |
461 | "'%s' that is missing or is not compatible " | |
462 | " with '%s'\n", __func__, path, | |
463 | fdt_get_name(blob, node, NULL), | |
464 | compat_names[id]); | |
465 | continue; | |
466 | } | |
467 | ||
468 | /* | |
469 | * Add this node to our list in the right place, and mark | |
470 | * it as done. | |
471 | */ | |
472 | if (fdtdec_get_is_enabled(blob, node)) { | |
c6782270 SG |
473 | if (node_list[number]) { |
474 | debug("%s: warning: alias '%s' requires that " | |
475 | "a node be placed in the list in a " | |
476 | "position which is already filled by " | |
477 | "node '%s'\n", __func__, path, | |
478 | fdt_get_name(blob, node, NULL)); | |
479 | continue; | |
480 | } | |
a53f4a29 SG |
481 | node_list[number] = node; |
482 | if (number >= num_found) | |
483 | num_found = number + 1; | |
484 | } | |
c6782270 | 485 | nodes[found] = 0; |
a53f4a29 SG |
486 | } |
487 | ||
488 | /* Add any nodes not mentioned by an alias */ | |
489 | for (i = j = 0; i < maxcount; i++) { | |
490 | if (!node_list[i]) { | |
491 | for (; j < maxcount; j++) | |
492 | if (nodes[j] && | |
493 | fdtdec_get_is_enabled(blob, nodes[j])) | |
494 | break; | |
495 | ||
496 | /* Have we run out of nodes to add? */ | |
497 | if (j == maxcount) | |
498 | break; | |
499 | ||
500 | assert(!node_list[i]); | |
501 | node_list[i] = nodes[j++]; | |
502 | if (i >= num_found) | |
503 | num_found = i + 1; | |
504 | } | |
505 | } | |
506 | ||
507 | return num_found; | |
508 | } | |
509 | ||
5c33c9fd SG |
510 | int fdtdec_get_alias_seq(const void *blob, const char *base, int offset, |
511 | int *seqp) | |
512 | { | |
513 | int base_len = strlen(base); | |
514 | const char *find_name; | |
515 | int find_namelen; | |
516 | int prop_offset; | |
517 | int aliases; | |
518 | ||
519 | find_name = fdt_get_name(blob, offset, &find_namelen); | |
520 | debug("Looking for '%s' at %d, name %s\n", base, offset, find_name); | |
521 | ||
522 | aliases = fdt_path_offset(blob, "/aliases"); | |
523 | for (prop_offset = fdt_first_property_offset(blob, aliases); | |
524 | prop_offset > 0; | |
525 | prop_offset = fdt_next_property_offset(blob, prop_offset)) { | |
526 | const char *prop; | |
527 | const char *name; | |
528 | const char *slash; | |
c4af6732 | 529 | int len, val; |
5c33c9fd SG |
530 | |
531 | prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len); | |
532 | debug(" - %s, %s\n", name, prop); | |
533 | if (len < find_namelen || *prop != '/' || prop[len - 1] || | |
534 | strncmp(name, base, base_len)) | |
535 | continue; | |
536 | ||
537 | slash = strrchr(prop, '/'); | |
538 | if (strcmp(slash + 1, find_name)) | |
539 | continue; | |
c4af6732 SG |
540 | val = trailing_strtol(name); |
541 | if (val != -1) { | |
542 | *seqp = val; | |
543 | debug("Found seq %d\n", *seqp); | |
544 | return 0; | |
5c33c9fd SG |
545 | } |
546 | } | |
547 | ||
548 | debug("Not found\n"); | |
549 | return -ENOENT; | |
550 | } | |
551 | ||
3bc37a50 | 552 | const char *fdtdec_get_chosen_prop(const void *blob, const char *name) |
aac07d49 | 553 | { |
aac07d49 | 554 | int chosen_node; |
aac07d49 SG |
555 | |
556 | if (!blob) | |
3bc37a50 | 557 | return NULL; |
aac07d49 | 558 | chosen_node = fdt_path_offset(blob, "/chosen"); |
3bc37a50 SG |
559 | return fdt_getprop(blob, chosen_node, name, NULL); |
560 | } | |
561 | ||
562 | int fdtdec_get_chosen_node(const void *blob, const char *name) | |
563 | { | |
564 | const char *prop; | |
565 | ||
566 | prop = fdtdec_get_chosen_prop(blob, name); | |
aac07d49 SG |
567 | if (!prop) |
568 | return -FDT_ERR_NOTFOUND; | |
569 | return fdt_path_offset(blob, prop); | |
570 | } | |
571 | ||
9a263e55 SG |
572 | int fdtdec_check_fdt(void) |
573 | { | |
574 | /* | |
575 | * We must have an FDT, but we cannot panic() yet since the console | |
576 | * is not ready. So for now, just assert(). Boards which need an early | |
577 | * FDT (prior to console ready) will need to make their own | |
578 | * arrangements and do their own checks. | |
579 | */ | |
580 | assert(!fdtdec_prepare_fdt()); | |
581 | return 0; | |
582 | } | |
583 | ||
b5220bc6 SG |
584 | /* |
585 | * This function is a little odd in that it accesses global data. At some | |
586 | * point if the architecture board.c files merge this will make more sense. | |
587 | * Even now, it is common code. | |
588 | */ | |
9a263e55 | 589 | int fdtdec_prepare_fdt(void) |
b5220bc6 | 590 | { |
c309c2da SG |
591 | if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) || |
592 | fdt_check_header(gd->fdt_blob)) { | |
66312374 SG |
593 | #ifdef CONFIG_SPL_BUILD |
594 | puts("Missing DTB\n"); | |
595 | #else | |
596 | puts("No valid device tree binary found - please append one to U-Boot binary, use u-boot-dtb.bin or define CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n"); | |
cb5f97f7 SG |
597 | # ifdef DEBUG |
598 | if (gd->fdt_blob) { | |
599 | printf("fdt_blob=%p\n", gd->fdt_blob); | |
600 | print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4, | |
601 | 32, 0); | |
602 | } | |
603 | # endif | |
66312374 | 604 | #endif |
9a263e55 SG |
605 | return -1; |
606 | } | |
b5220bc6 SG |
607 | return 0; |
608 | } | |
d17da655 SG |
609 | |
610 | int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name) | |
611 | { | |
612 | const u32 *phandle; | |
613 | int lookup; | |
614 | ||
1cb2323b | 615 | debug("%s: %s\n", __func__, prop_name); |
d17da655 SG |
616 | phandle = fdt_getprop(blob, node, prop_name, NULL); |
617 | if (!phandle) | |
618 | return -FDT_ERR_NOTFOUND; | |
619 | ||
620 | lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle)); | |
621 | return lookup; | |
622 | } | |
623 | ||
624 | /** | |
625 | * Look up a property in a node and check that it has a minimum length. | |
626 | * | |
627 | * @param blob FDT blob | |
628 | * @param node node to examine | |
629 | * @param prop_name name of property to find | |
630 | * @param min_len minimum property length in bytes | |
631 | * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not | |
632 | found, or -FDT_ERR_BADLAYOUT if not enough data | |
633 | * @return pointer to cell, which is only valid if err == 0 | |
634 | */ | |
635 | static const void *get_prop_check_min_len(const void *blob, int node, | |
636 | const char *prop_name, int min_len, int *err) | |
637 | { | |
638 | const void *cell; | |
639 | int len; | |
640 | ||
641 | debug("%s: %s\n", __func__, prop_name); | |
642 | cell = fdt_getprop(blob, node, prop_name, &len); | |
643 | if (!cell) | |
644 | *err = -FDT_ERR_NOTFOUND; | |
645 | else if (len < min_len) | |
646 | *err = -FDT_ERR_BADLAYOUT; | |
647 | else | |
648 | *err = 0; | |
649 | return cell; | |
650 | } | |
651 | ||
652 | int fdtdec_get_int_array(const void *blob, int node, const char *prop_name, | |
653 | u32 *array, int count) | |
654 | { | |
655 | const u32 *cell; | |
656 | int i, err = 0; | |
657 | ||
658 | debug("%s: %s\n", __func__, prop_name); | |
659 | cell = get_prop_check_min_len(blob, node, prop_name, | |
660 | sizeof(u32) * count, &err); | |
661 | if (!err) { | |
662 | for (i = 0; i < count; i++) | |
663 | array[i] = fdt32_to_cpu(cell[i]); | |
664 | } | |
665 | return err; | |
666 | } | |
667 | ||
a9f04d49 SG |
668 | int fdtdec_get_int_array_count(const void *blob, int node, |
669 | const char *prop_name, u32 *array, int count) | |
670 | { | |
671 | const u32 *cell; | |
672 | int len, elems; | |
673 | int i; | |
674 | ||
675 | debug("%s: %s\n", __func__, prop_name); | |
676 | cell = fdt_getprop(blob, node, prop_name, &len); | |
677 | if (!cell) | |
678 | return -FDT_ERR_NOTFOUND; | |
679 | elems = len / sizeof(u32); | |
680 | if (count > elems) | |
681 | count = elems; | |
682 | for (i = 0; i < count; i++) | |
683 | array[i] = fdt32_to_cpu(cell[i]); | |
684 | ||
685 | return count; | |
686 | } | |
687 | ||
96875e7d SG |
688 | const u32 *fdtdec_locate_array(const void *blob, int node, |
689 | const char *prop_name, int count) | |
690 | { | |
691 | const u32 *cell; | |
692 | int err; | |
693 | ||
694 | cell = get_prop_check_min_len(blob, node, prop_name, | |
695 | sizeof(u32) * count, &err); | |
696 | return err ? NULL : cell; | |
697 | } | |
698 | ||
d17da655 SG |
699 | int fdtdec_get_bool(const void *blob, int node, const char *prop_name) |
700 | { | |
701 | const s32 *cell; | |
702 | int len; | |
703 | ||
704 | debug("%s: %s\n", __func__, prop_name); | |
705 | cell = fdt_getprop(blob, node, prop_name, &len); | |
706 | return cell != NULL; | |
707 | } | |
ed3ee5cd | 708 | |
57068a7a SG |
709 | int fdtdec_parse_phandle_with_args(const void *blob, int src_node, |
710 | const char *list_name, | |
711 | const char *cells_name, | |
712 | int cell_count, int index, | |
713 | struct fdtdec_phandle_args *out_args) | |
714 | { | |
715 | const __be32 *list, *list_end; | |
716 | int rc = 0, size, cur_index = 0; | |
717 | uint32_t count = 0; | |
718 | int node = -1; | |
719 | int phandle; | |
720 | ||
721 | /* Retrieve the phandle list property */ | |
722 | list = fdt_getprop(blob, src_node, list_name, &size); | |
723 | if (!list) | |
724 | return -ENOENT; | |
725 | list_end = list + size / sizeof(*list); | |
726 | ||
727 | /* Loop over the phandles until all the requested entry is found */ | |
728 | while (list < list_end) { | |
729 | rc = -EINVAL; | |
730 | count = 0; | |
731 | ||
732 | /* | |
733 | * If phandle is 0, then it is an empty entry with no | |
734 | * arguments. Skip forward to the next entry. | |
735 | */ | |
736 | phandle = be32_to_cpup(list++); | |
737 | if (phandle) { | |
738 | /* | |
739 | * Find the provider node and parse the #*-cells | |
740 | * property to determine the argument length. | |
741 | * | |
742 | * This is not needed if the cell count is hard-coded | |
743 | * (i.e. cells_name not set, but cell_count is set), | |
744 | * except when we're going to return the found node | |
745 | * below. | |
746 | */ | |
747 | if (cells_name || cur_index == index) { | |
748 | node = fdt_node_offset_by_phandle(blob, | |
749 | phandle); | |
750 | if (!node) { | |
751 | debug("%s: could not find phandle\n", | |
752 | fdt_get_name(blob, src_node, | |
753 | NULL)); | |
754 | goto err; | |
755 | } | |
756 | } | |
757 | ||
758 | if (cells_name) { | |
759 | count = fdtdec_get_int(blob, node, cells_name, | |
760 | -1); | |
761 | if (count == -1) { | |
762 | debug("%s: could not get %s for %s\n", | |
763 | fdt_get_name(blob, src_node, | |
764 | NULL), | |
765 | cells_name, | |
766 | fdt_get_name(blob, node, | |
767 | NULL)); | |
768 | goto err; | |
769 | } | |
770 | } else { | |
771 | count = cell_count; | |
772 | } | |
773 | ||
774 | /* | |
775 | * Make sure that the arguments actually fit in the | |
776 | * remaining property data length | |
777 | */ | |
778 | if (list + count > list_end) { | |
779 | debug("%s: arguments longer than property\n", | |
780 | fdt_get_name(blob, src_node, NULL)); | |
781 | goto err; | |
782 | } | |
783 | } | |
784 | ||
785 | /* | |
786 | * All of the error cases above bail out of the loop, so at | |
787 | * this point, the parsing is successful. If the requested | |
788 | * index matches, then fill the out_args structure and return, | |
789 | * or return -ENOENT for an empty entry. | |
790 | */ | |
791 | rc = -ENOENT; | |
792 | if (cur_index == index) { | |
793 | if (!phandle) | |
794 | goto err; | |
795 | ||
796 | if (out_args) { | |
797 | int i; | |
798 | ||
799 | if (count > MAX_PHANDLE_ARGS) { | |
800 | debug("%s: too many arguments %d\n", | |
801 | fdt_get_name(blob, src_node, | |
802 | NULL), count); | |
803 | count = MAX_PHANDLE_ARGS; | |
804 | } | |
805 | out_args->node = node; | |
806 | out_args->args_count = count; | |
807 | for (i = 0; i < count; i++) { | |
808 | out_args->args[i] = | |
809 | be32_to_cpup(list++); | |
810 | } | |
811 | } | |
812 | ||
813 | /* Found it! return success */ | |
814 | return 0; | |
815 | } | |
816 | ||
817 | node = -1; | |
818 | list += count; | |
819 | cur_index++; | |
820 | } | |
821 | ||
822 | /* | |
823 | * Result will be one of: | |
824 | * -ENOENT : index is for empty phandle | |
825 | * -EINVAL : parsing error on data | |
826 | * [1..n] : Number of phandle (count mode; when index = -1) | |
827 | */ | |
828 | rc = index < 0 ? cur_index : -ENOENT; | |
829 | err: | |
830 | return rc; | |
831 | } | |
832 | ||
1889a7e2 PF |
833 | int fdtdec_get_child_count(const void *blob, int node) |
834 | { | |
835 | int subnode; | |
836 | int num = 0; | |
837 | ||
838 | fdt_for_each_subnode(blob, subnode, node) | |
839 | num++; | |
840 | ||
841 | return num; | |
842 | } | |
843 | ||
bed4d892 AS |
844 | int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name, |
845 | u8 *array, int count) | |
846 | { | |
847 | const u8 *cell; | |
848 | int err; | |
849 | ||
850 | cell = get_prop_check_min_len(blob, node, prop_name, count, &err); | |
851 | if (!err) | |
852 | memcpy(array, cell, count); | |
853 | return err; | |
854 | } | |
855 | ||
856 | const u8 *fdtdec_locate_byte_array(const void *blob, int node, | |
857 | const char *prop_name, int count) | |
858 | { | |
859 | const u8 *cell; | |
860 | int err; | |
861 | ||
862 | cell = get_prop_check_min_len(blob, node, prop_name, count, &err); | |
863 | if (err) | |
864 | return NULL; | |
865 | return cell; | |
866 | } | |
09258f1e | 867 | |
09258f1e AK |
868 | int fdtdec_get_config_int(const void *blob, const char *prop_name, |
869 | int default_val) | |
870 | { | |
871 | int config_node; | |
872 | ||
873 | debug("%s: %s\n", __func__, prop_name); | |
874 | config_node = fdt_path_offset(blob, "/config"); | |
875 | if (config_node < 0) | |
876 | return default_val; | |
877 | return fdtdec_get_int(blob, config_node, prop_name, default_val); | |
878 | } | |
332ab0d5 | 879 | |
79289c0b GB |
880 | int fdtdec_get_config_bool(const void *blob, const char *prop_name) |
881 | { | |
882 | int config_node; | |
883 | const void *prop; | |
884 | ||
885 | debug("%s: %s\n", __func__, prop_name); | |
886 | config_node = fdt_path_offset(blob, "/config"); | |
887 | if (config_node < 0) | |
888 | return 0; | |
889 | prop = fdt_get_property(blob, config_node, prop_name, NULL); | |
890 | ||
891 | return prop != NULL; | |
892 | } | |
893 | ||
332ab0d5 SG |
894 | char *fdtdec_get_config_string(const void *blob, const char *prop_name) |
895 | { | |
896 | const char *nodep; | |
897 | int nodeoffset; | |
898 | int len; | |
899 | ||
900 | debug("%s: %s\n", __func__, prop_name); | |
901 | nodeoffset = fdt_path_offset(blob, "/config"); | |
902 | if (nodeoffset < 0) | |
903 | return NULL; | |
904 | ||
905 | nodep = fdt_getprop(blob, nodeoffset, prop_name, &len); | |
906 | if (!nodep) | |
907 | return NULL; | |
908 | ||
909 | return (char *)nodep; | |
910 | } | |
f20c4619 | 911 | |
76489832 SG |
912 | int fdtdec_decode_region(const void *blob, int node, const char *prop_name, |
913 | fdt_addr_t *basep, fdt_size_t *sizep) | |
f20c4619 SG |
914 | { |
915 | const fdt_addr_t *cell; | |
916 | int len; | |
917 | ||
76489832 SG |
918 | debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL), |
919 | prop_name); | |
f20c4619 | 920 | cell = fdt_getprop(blob, node, prop_name, &len); |
76489832 SG |
921 | if (!cell || (len < sizeof(fdt_addr_t) * 2)) { |
922 | debug("cell=%p, len=%d\n", cell, len); | |
f20c4619 | 923 | return -1; |
76489832 SG |
924 | } |
925 | ||
926 | *basep = fdt_addr_to_cpu(*cell); | |
927 | *sizep = fdt_size_to_cpu(cell[1]); | |
928 | debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep, | |
929 | (ulong)*sizep); | |
f20c4619 | 930 | |
f20c4619 SG |
931 | return 0; |
932 | } | |
006e73b9 SG |
933 | |
934 | /** | |
935 | * Read a flash entry from the fdt | |
936 | * | |
937 | * @param blob FDT blob | |
938 | * @param node Offset of node to read | |
939 | * @param name Name of node being read | |
940 | * @param entry Place to put offset and size of this node | |
941 | * @return 0 if ok, -ve on error | |
942 | */ | |
943 | int fdtdec_read_fmap_entry(const void *blob, int node, const char *name, | |
944 | struct fmap_entry *entry) | |
945 | { | |
f3cc44f9 | 946 | const char *prop; |
006e73b9 SG |
947 | u32 reg[2]; |
948 | ||
949 | if (fdtdec_get_int_array(blob, node, "reg", reg, 2)) { | |
950 | debug("Node '%s' has bad/missing 'reg' property\n", name); | |
951 | return -FDT_ERR_NOTFOUND; | |
952 | } | |
953 | entry->offset = reg[0]; | |
954 | entry->length = reg[1]; | |
f3cc44f9 SG |
955 | entry->used = fdtdec_get_int(blob, node, "used", entry->length); |
956 | prop = fdt_getprop(blob, node, "compress", NULL); | |
957 | entry->compress_algo = prop && !strcmp(prop, "lzo") ? | |
958 | FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE; | |
959 | prop = fdt_getprop(blob, node, "hash", &entry->hash_size); | |
960 | entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE; | |
961 | entry->hash = (uint8_t *)prop; | |
006e73b9 SG |
962 | |
963 | return 0; | |
964 | } | |
56f42242 | 965 | |
5f7bfdd6 | 966 | u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells) |
56f42242 TR |
967 | { |
968 | u64 number = 0; | |
969 | ||
970 | while (cells--) | |
971 | number = (number << 32) | fdt32_to_cpu(*ptr++); | |
972 | ||
973 | return number; | |
974 | } | |
975 | ||
976 | int fdt_get_resource(const void *fdt, int node, const char *property, | |
977 | unsigned int index, struct fdt_resource *res) | |
978 | { | |
979 | const fdt32_t *ptr, *end; | |
980 | int na, ns, len, parent; | |
981 | unsigned int i = 0; | |
982 | ||
983 | parent = fdt_parent_offset(fdt, node); | |
984 | if (parent < 0) | |
985 | return parent; | |
986 | ||
987 | na = fdt_address_cells(fdt, parent); | |
988 | ns = fdt_size_cells(fdt, parent); | |
989 | ||
990 | ptr = fdt_getprop(fdt, node, property, &len); | |
991 | if (!ptr) | |
992 | return len; | |
993 | ||
994 | end = ptr + len / sizeof(*ptr); | |
995 | ||
996 | while (ptr + na + ns <= end) { | |
997 | if (i == index) { | |
998 | res->start = res->end = fdtdec_get_number(ptr, na); | |
999 | res->end += fdtdec_get_number(&ptr[na], ns) - 1; | |
1000 | return 0; | |
1001 | } | |
1002 | ||
1003 | ptr += na + ns; | |
1004 | i++; | |
1005 | } | |
1006 | ||
1007 | return -FDT_ERR_NOTFOUND; | |
1008 | } | |
1009 | ||
1010 | int fdt_get_named_resource(const void *fdt, int node, const char *property, | |
1011 | const char *prop_names, const char *name, | |
1012 | struct fdt_resource *res) | |
1013 | { | |
1014 | int index; | |
1015 | ||
1016 | index = fdt_find_string(fdt, node, prop_names, name); | |
1017 | if (index < 0) | |
1018 | return index; | |
1019 | ||
1020 | return fdt_get_resource(fdt, node, property, index, res); | |
1021 | } | |
9f85eee7 | 1022 | |
26403871 SG |
1023 | int fdtdec_decode_memory_region(const void *blob, int config_node, |
1024 | const char *mem_type, const char *suffix, | |
1025 | fdt_addr_t *basep, fdt_size_t *sizep) | |
1026 | { | |
1027 | char prop_name[50]; | |
1028 | const char *mem; | |
1029 | fdt_size_t size, offset_size; | |
1030 | fdt_addr_t base, offset; | |
1031 | int node; | |
1032 | ||
1033 | if (config_node == -1) { | |
1034 | config_node = fdt_path_offset(blob, "/config"); | |
1035 | if (config_node < 0) { | |
1036 | debug("%s: Cannot find /config node\n", __func__); | |
1037 | return -ENOENT; | |
1038 | } | |
1039 | } | |
1040 | if (!suffix) | |
1041 | suffix = ""; | |
1042 | ||
1043 | snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type, | |
1044 | suffix); | |
1045 | mem = fdt_getprop(blob, config_node, prop_name, NULL); | |
1046 | if (!mem) { | |
1047 | debug("%s: No memory type for '%s', using /memory\n", __func__, | |
1048 | prop_name); | |
1049 | mem = "/memory"; | |
1050 | } | |
1051 | ||
1052 | node = fdt_path_offset(blob, mem); | |
1053 | if (node < 0) { | |
1054 | debug("%s: Failed to find node '%s': %s\n", __func__, mem, | |
1055 | fdt_strerror(node)); | |
1056 | return -ENOENT; | |
1057 | } | |
1058 | ||
1059 | /* | |
1060 | * Not strictly correct - the memory may have multiple banks. We just | |
1061 | * use the first | |
1062 | */ | |
1063 | if (fdtdec_decode_region(blob, node, "reg", &base, &size)) { | |
1064 | debug("%s: Failed to decode memory region %s\n", __func__, | |
1065 | mem); | |
1066 | return -EINVAL; | |
1067 | } | |
1068 | ||
1069 | snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type, | |
1070 | suffix); | |
1071 | if (fdtdec_decode_region(blob, config_node, prop_name, &offset, | |
1072 | &offset_size)) { | |
1073 | debug("%s: Failed to decode memory region '%s'\n", __func__, | |
1074 | prop_name); | |
1075 | return -EINVAL; | |
1076 | } | |
1077 | ||
1078 | *basep = base + offset; | |
1079 | *sizep = offset_size; | |
1080 | ||
1081 | return 0; | |
1082 | } | |
b45122fd | 1083 | |
12e67114 SG |
1084 | static int decode_timing_property(const void *blob, int node, const char *name, |
1085 | struct timing_entry *result) | |
1086 | { | |
1087 | int length, ret = 0; | |
1088 | const u32 *prop; | |
1089 | ||
1090 | prop = fdt_getprop(blob, node, name, &length); | |
1091 | if (!prop) { | |
1092 | debug("%s: could not find property %s\n", | |
1093 | fdt_get_name(blob, node, NULL), name); | |
1094 | return length; | |
1095 | } | |
1096 | ||
1097 | if (length == sizeof(u32)) { | |
1098 | result->typ = fdtdec_get_int(blob, node, name, 0); | |
1099 | result->min = result->typ; | |
1100 | result->max = result->typ; | |
1101 | } else { | |
1102 | ret = fdtdec_get_int_array(blob, node, name, &result->min, 3); | |
1103 | } | |
1104 | ||
1105 | return ret; | |
1106 | } | |
1107 | ||
1108 | int fdtdec_decode_display_timing(const void *blob, int parent, int index, | |
1109 | struct display_timing *dt) | |
1110 | { | |
1111 | int i, node, timings_node; | |
1112 | u32 val = 0; | |
1113 | int ret = 0; | |
1114 | ||
1115 | timings_node = fdt_subnode_offset(blob, parent, "display-timings"); | |
1116 | if (timings_node < 0) | |
1117 | return timings_node; | |
1118 | ||
1119 | for (i = 0, node = fdt_first_subnode(blob, timings_node); | |
1120 | node > 0 && i != index; | |
1121 | node = fdt_next_subnode(blob, node)) | |
1122 | i++; | |
1123 | ||
1124 | if (node < 0) | |
1125 | return node; | |
1126 | ||
1127 | memset(dt, 0, sizeof(*dt)); | |
1128 | ||
1129 | ret |= decode_timing_property(blob, node, "hback-porch", | |
1130 | &dt->hback_porch); | |
1131 | ret |= decode_timing_property(blob, node, "hfront-porch", | |
1132 | &dt->hfront_porch); | |
1133 | ret |= decode_timing_property(blob, node, "hactive", &dt->hactive); | |
1134 | ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len); | |
1135 | ret |= decode_timing_property(blob, node, "vback-porch", | |
1136 | &dt->vback_porch); | |
1137 | ret |= decode_timing_property(blob, node, "vfront-porch", | |
1138 | &dt->vfront_porch); | |
1139 | ret |= decode_timing_property(blob, node, "vactive", &dt->vactive); | |
1140 | ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len); | |
1141 | ret |= decode_timing_property(blob, node, "clock-frequency", | |
1142 | &dt->pixelclock); | |
1143 | ||
1144 | dt->flags = 0; | |
1145 | val = fdtdec_get_int(blob, node, "vsync-active", -1); | |
1146 | if (val != -1) { | |
1147 | dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH : | |
1148 | DISPLAY_FLAGS_VSYNC_LOW; | |
1149 | } | |
1150 | val = fdtdec_get_int(blob, node, "hsync-active", -1); | |
1151 | if (val != -1) { | |
1152 | dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH : | |
1153 | DISPLAY_FLAGS_HSYNC_LOW; | |
1154 | } | |
1155 | val = fdtdec_get_int(blob, node, "de-active", -1); | |
1156 | if (val != -1) { | |
1157 | dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH : | |
1158 | DISPLAY_FLAGS_DE_LOW; | |
1159 | } | |
1160 | val = fdtdec_get_int(blob, node, "pixelclk-active", -1); | |
1161 | if (val != -1) { | |
1162 | dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE : | |
1163 | DISPLAY_FLAGS_PIXDATA_NEGEDGE; | |
1164 | } | |
1165 | ||
1166 | if (fdtdec_get_bool(blob, node, "interlaced")) | |
1167 | dt->flags |= DISPLAY_FLAGS_INTERLACED; | |
1168 | if (fdtdec_get_bool(blob, node, "doublescan")) | |
1169 | dt->flags |= DISPLAY_FLAGS_DOUBLESCAN; | |
1170 | if (fdtdec_get_bool(blob, node, "doubleclk")) | |
1171 | dt->flags |= DISPLAY_FLAGS_DOUBLECLK; | |
1172 | ||
1173 | return 0; | |
1174 | } | |
1175 | ||
0879361f | 1176 | int fdtdec_setup(void) |
b45122fd | 1177 | { |
0f925822 | 1178 | #if CONFIG_IS_ENABLED(OF_CONTROL) |
b45122fd SG |
1179 | # ifdef CONFIG_OF_EMBED |
1180 | /* Get a pointer to the FDT */ | |
1181 | gd->fdt_blob = __dtb_dt_begin; | |
1182 | # elif defined CONFIG_OF_SEPARATE | |
1183 | # ifdef CONFIG_SPL_BUILD | |
10172962 SG |
1184 | /* FDT is at end of BSS unless it is in a different memory region */ |
1185 | if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS)) | |
1186 | gd->fdt_blob = (ulong *)&_image_binary_end; | |
1187 | else | |
1188 | gd->fdt_blob = (ulong *)&__bss_end; | |
b45122fd SG |
1189 | # else |
1190 | /* FDT is at end of image */ | |
1191 | gd->fdt_blob = (ulong *)&_end; | |
3bd926cc | 1192 | # endif |
b45122fd SG |
1193 | # elif defined(CONFIG_OF_HOSTFILE) |
1194 | if (sandbox_read_fdt_from_file()) { | |
1195 | puts("Failed to read control FDT\n"); | |
1196 | return -1; | |
1197 | } | |
1198 | # endif | |
1199 | # ifndef CONFIG_SPL_BUILD | |
1200 | /* Allow the early environment to override the fdt address */ | |
1201 | gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, | |
1202 | (uintptr_t)gd->fdt_blob); | |
1203 | # endif | |
29a23f9d | 1204 | #endif |
0879361f | 1205 | return fdtdec_prepare_fdt(); |
b45122fd SG |
1206 | } |
1207 | ||
1208 | #endif /* !USE_HOSTCC */ |