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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"), |
7aaa5a60 | 34 | COMPAT(NVIDIA_TEGRA210_SDMMC, "nvidia,tegra210-sdhci"), |
a73ca478 | 35 | COMPAT(NVIDIA_TEGRA124_SDMMC, "nvidia,tegra124-sdhci"), |
f4e4e0b0 | 36 | COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"), |
c9aa831e | 37 | COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"), |
f315828b | 38 | COMPAT(NVIDIA_TEGRA124_PCIE, "nvidia,tegra124-pcie"), |
d9eda6c4 | 39 | COMPAT(NVIDIA_TEGRA210_PCIE, "nvidia,tegra210-pcie"), |
f315828b TR |
40 | COMPAT(NVIDIA_TEGRA30_PCIE, "nvidia,tegra30-pcie"), |
41 | COMPAT(NVIDIA_TEGRA20_PCIE, "nvidia,tegra20-pcie"), | |
79c7a90f | 42 | COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"), |
7aaa5a60 | 43 | COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-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"), |
f37df0f8 | 59 | COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686"), |
bb8215f4 | 60 | COMPAT(GENERIC_SPI_FLASH, "spi-flash"), |
7772bb78 | 61 | COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"), |
ecbd7e1e | 62 | COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"), |
7d95f2a3 | 63 | COMPAT(SANDBOX_LCD_SDL, "sandbox,lcd-sdl"), |
45c480c9 | 64 | COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"), |
77f9b1fb | 65 | COMPAT(INTEL_MICROCODE, "intel,microcode"), |
65dd74a6 | 66 | COMPAT(MEMORY_SPD, "memory-spd"), |
3ac83935 | 67 | COMPAT(INTEL_PANTHERPOINT_AHCI, "intel,pantherpoint-ahci"), |
bb80be39 | 68 | COMPAT(INTEL_MODEL_206AX, "intel,model-206ax"), |
effcf067 | 69 | COMPAT(INTEL_GMA, "intel,gma"), |
6173c45b | 70 | COMPAT(AMS_AS3722, "ams,as3722"), |
5da38086 | 71 | COMPAT(INTEL_ICH_SPI, "intel,ich-spi"), |
c89ada01 | 72 | COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"), |
5318f18d | 73 | COMPAT(INTEL_X86_PINCTRL, "intel,x86-pinctrl"), |
6462cded | 74 | COMPAT(SOCIONEXT_XHCI, "socionext,uniphier-xhci"), |
90b16d14 | 75 | COMPAT(COMPAT_INTEL_PCH, "intel,bd82x6x"), |
9c7dea60 | 76 | COMPAT(COMPAT_INTEL_IRQ_ROUTER, "intel,irq-router"), |
6ab00db2 | 77 | COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"), |
129adf5b | 78 | COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"), |
f3b84a30 AB |
79 | COMPAT(COMPAT_INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"), |
80 | COMPAT(COMPAT_INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"), | |
b5220bc6 SG |
81 | }; |
82 | ||
a53f4a29 SG |
83 | const char *fdtdec_get_compatible(enum fdt_compat_id id) |
84 | { | |
85 | /* We allow reading of the 'unknown' ID for testing purposes */ | |
86 | assert(id >= 0 && id < COMPAT_COUNT); | |
87 | return compat_names[id]; | |
88 | } | |
89 | ||
02464e38 SW |
90 | fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node, |
91 | const char *prop_name, int index, int na, int ns, | |
92 | fdt_size_t *sizep) | |
b5220bc6 | 93 | { |
02464e38 SW |
94 | const fdt32_t *prop, *prop_end; |
95 | const fdt32_t *prop_addr, *prop_size, *prop_after_size; | |
236efe36 | 96 | int len; |
02464e38 | 97 | fdt_addr_t addr; |
b5220bc6 | 98 | |
1cb2323b | 99 | debug("%s: %s: ", __func__, prop_name); |
02464e38 SW |
100 | |
101 | if (na > (sizeof(fdt_addr_t) / sizeof(fdt32_t))) { | |
102 | debug("(na too large for fdt_addr_t type)\n"); | |
103 | return FDT_ADDR_T_NONE; | |
104 | } | |
105 | ||
106 | if (ns > (sizeof(fdt_size_t) / sizeof(fdt32_t))) { | |
107 | debug("(ns too large for fdt_size_t type)\n"); | |
108 | return FDT_ADDR_T_NONE; | |
109 | } | |
110 | ||
111 | prop = fdt_getprop(blob, node, prop_name, &len); | |
112 | if (!prop) { | |
113 | debug("(not found)\n"); | |
114 | return FDT_ADDR_T_NONE; | |
115 | } | |
116 | prop_end = prop + (len / sizeof(*prop)); | |
117 | ||
118 | prop_addr = prop + (index * (na + ns)); | |
119 | prop_size = prop_addr + na; | |
120 | prop_after_size = prop_size + ns; | |
121 | if (prop_after_size > prop_end) { | |
122 | debug("(not enough data: expected >= %d cells, got %d cells)\n", | |
123 | (u32)(prop_after_size - prop), ((u32)(prop_end - prop))); | |
124 | return FDT_ADDR_T_NONE; | |
125 | } | |
126 | ||
127 | addr = fdtdec_get_number(prop_addr, na); | |
128 | ||
129 | if (sizep) { | |
130 | *sizep = fdtdec_get_number(prop_size, ns); | |
131 | debug("addr=%08llx, size=%llx\n", (u64)addr, (u64)*sizep); | |
132 | } else { | |
133 | debug("addr=%08llx\n", (u64)addr); | |
134 | } | |
135 | ||
136 | return addr; | |
137 | } | |
138 | ||
139 | fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent, | |
140 | int node, const char *prop_name, int index, fdt_size_t *sizep) | |
141 | { | |
142 | int na, ns; | |
143 | ||
144 | debug("%s: ", __func__); | |
145 | ||
146 | na = fdt_address_cells(blob, parent); | |
147 | if (na < 1) { | |
148 | debug("(bad #address-cells)\n"); | |
149 | return FDT_ADDR_T_NONE; | |
150 | } | |
151 | ||
152 | ns = fdt_size_cells(blob, parent); | |
ff0a6358 | 153 | if (ns < 0) { |
02464e38 SW |
154 | debug("(bad #size-cells)\n"); |
155 | return FDT_ADDR_T_NONE; | |
156 | } | |
157 | ||
158 | debug("na=%d, ns=%d, ", na, ns); | |
159 | ||
160 | return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na, | |
161 | ns, sizep); | |
162 | } | |
163 | ||
164 | fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node, | |
165 | const char *prop_name, int index, fdt_size_t *sizep) | |
166 | { | |
167 | int parent; | |
168 | ||
169 | debug("%s: ", __func__); | |
170 | ||
171 | parent = fdt_parent_offset(blob, node); | |
172 | if (parent < 0) { | |
173 | debug("(no parent found)\n"); | |
174 | return FDT_ADDR_T_NONE; | |
5b344360 | 175 | } |
02464e38 SW |
176 | |
177 | return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name, | |
178 | index, sizep); | |
179 | } | |
180 | ||
181 | fdt_addr_t fdtdec_get_addr_size(const void *blob, int node, | |
182 | const char *prop_name, fdt_size_t *sizep) | |
183 | { | |
d93b9a07 SW |
184 | int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0; |
185 | ||
02464e38 SW |
186 | return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0, |
187 | sizeof(fdt_addr_t) / sizeof(fdt32_t), | |
d93b9a07 | 188 | ns, sizep); |
b5220bc6 SG |
189 | } |
190 | ||
4397a2a8 SG |
191 | fdt_addr_t fdtdec_get_addr(const void *blob, int node, |
192 | const char *prop_name) | |
193 | { | |
194 | return fdtdec_get_addr_size(blob, node, prop_name, NULL); | |
195 | } | |
196 | ||
a62e84d7 BM |
197 | #ifdef CONFIG_PCI |
198 | int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type, | |
199 | const char *prop_name, struct fdt_pci_addr *addr) | |
200 | { | |
201 | const u32 *cell; | |
202 | int len; | |
203 | int ret = -ENOENT; | |
204 | ||
205 | debug("%s: %s: ", __func__, prop_name); | |
206 | ||
207 | /* | |
208 | * If we follow the pci bus bindings strictly, we should check | |
209 | * the value of the node's parent node's #address-cells and | |
210 | * #size-cells. They need to be 3 and 2 accordingly. However, | |
211 | * for simplicity we skip the check here. | |
212 | */ | |
213 | cell = fdt_getprop(blob, node, prop_name, &len); | |
214 | if (!cell) | |
215 | goto fail; | |
216 | ||
217 | if ((len % FDT_PCI_REG_SIZE) == 0) { | |
218 | int num = len / FDT_PCI_REG_SIZE; | |
219 | int i; | |
220 | ||
221 | for (i = 0; i < num; i++) { | |
222 | debug("pci address #%d: %08lx %08lx %08lx\n", i, | |
4ea5243a SW |
223 | (ulong)fdt32_to_cpu(cell[0]), |
224 | (ulong)fdt32_to_cpu(cell[1]), | |
225 | (ulong)fdt32_to_cpu(cell[2])); | |
226 | if ((fdt32_to_cpu(*cell) & type) == type) { | |
227 | addr->phys_hi = fdt32_to_cpu(cell[0]); | |
228 | addr->phys_mid = fdt32_to_cpu(cell[1]); | |
229 | addr->phys_lo = fdt32_to_cpu(cell[1]); | |
a62e84d7 BM |
230 | break; |
231 | } else { | |
232 | cell += (FDT_PCI_ADDR_CELLS + | |
233 | FDT_PCI_SIZE_CELLS); | |
234 | } | |
235 | } | |
236 | ||
106cce96 SG |
237 | if (i == num) { |
238 | ret = -ENXIO; | |
a62e84d7 | 239 | goto fail; |
106cce96 | 240 | } |
a62e84d7 BM |
241 | |
242 | return 0; | |
243 | } else { | |
244 | ret = -EINVAL; | |
245 | } | |
246 | ||
247 | fail: | |
248 | debug("(not found)\n"); | |
249 | return ret; | |
250 | } | |
251 | ||
252 | int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device) | |
253 | { | |
254 | const char *list, *end; | |
255 | int len; | |
256 | ||
257 | list = fdt_getprop(blob, node, "compatible", &len); | |
258 | if (!list) | |
259 | return -ENOENT; | |
260 | ||
261 | end = list + len; | |
262 | while (list < end) { | |
263 | char *s; | |
264 | ||
265 | len = strlen(list); | |
266 | if (len >= strlen("pciVVVV,DDDD")) { | |
267 | s = strstr(list, "pci"); | |
268 | ||
269 | /* | |
270 | * check if the string is something like pciVVVV,DDDD.RR | |
271 | * or just pciVVVV,DDDD | |
272 | */ | |
273 | if (s && s[7] == ',' && | |
274 | (s[12] == '.' || s[12] == 0)) { | |
275 | s += 3; | |
276 | *vendor = simple_strtol(s, NULL, 16); | |
277 | ||
278 | s += 5; | |
279 | *device = simple_strtol(s, NULL, 16); | |
280 | ||
281 | return 0; | |
282 | } | |
a62e84d7 | 283 | } |
bc6351eb | 284 | list += (len + 1); |
a62e84d7 BM |
285 | } |
286 | ||
287 | return -ENOENT; | |
288 | } | |
289 | ||
290 | int fdtdec_get_pci_bdf(const void *blob, int node, | |
291 | struct fdt_pci_addr *addr, pci_dev_t *bdf) | |
292 | { | |
293 | u16 dt_vendor, dt_device, vendor, device; | |
294 | int ret; | |
295 | ||
296 | /* get vendor id & device id from the compatible string */ | |
297 | ret = fdtdec_get_pci_vendev(blob, node, &dt_vendor, &dt_device); | |
298 | if (ret) | |
299 | return ret; | |
300 | ||
301 | /* extract the bdf from fdt_pci_addr */ | |
302 | *bdf = addr->phys_hi & 0xffff00; | |
303 | ||
304 | /* read vendor id & device id based on bdf */ | |
305 | pci_read_config_word(*bdf, PCI_VENDOR_ID, &vendor); | |
306 | pci_read_config_word(*bdf, PCI_DEVICE_ID, &device); | |
307 | ||
308 | /* | |
309 | * Note there are two places in the device tree to fully describe | |
310 | * a pci device: one is via compatible string with a format of | |
311 | * "pciVVVV,DDDD" and the other one is the bdf numbers encoded in | |
312 | * the device node's reg address property. We read the vendor id | |
313 | * and device id based on bdf and compare the values with the | |
314 | * "VVVV,DDDD". If they are the same, then we are good to use bdf | |
315 | * to read device's bar. But if they are different, we have to rely | |
316 | * on the vendor id and device id extracted from the compatible | |
317 | * string and locate the real bdf by pci_find_device(). This is | |
318 | * because normally we may only know device's device number and | |
319 | * function number when writing device tree. The bus number is | |
320 | * dynamically assigned during the pci enumeration process. | |
321 | */ | |
322 | if ((dt_vendor != vendor) || (dt_device != device)) { | |
323 | *bdf = pci_find_device(dt_vendor, dt_device, 0); | |
324 | if (*bdf == -1) | |
325 | return -ENODEV; | |
326 | } | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
331 | int fdtdec_get_pci_bar32(const void *blob, int node, | |
332 | struct fdt_pci_addr *addr, u32 *bar) | |
333 | { | |
334 | pci_dev_t bdf; | |
335 | int barnum; | |
336 | int ret; | |
337 | ||
338 | /* get pci devices's bdf */ | |
339 | ret = fdtdec_get_pci_bdf(blob, node, addr, &bdf); | |
340 | if (ret) | |
341 | return ret; | |
342 | ||
343 | /* extract the bar number from fdt_pci_addr */ | |
344 | barnum = addr->phys_hi & 0xff; | |
345 | if ((barnum < PCI_BASE_ADDRESS_0) || (barnum > PCI_CARDBUS_CIS)) | |
346 | return -EINVAL; | |
347 | ||
348 | barnum = (barnum - PCI_BASE_ADDRESS_0) / 4; | |
349 | *bar = pci_read_bar32(pci_bus_to_hose(PCI_BUS(bdf)), bdf, barnum); | |
350 | ||
351 | return 0; | |
352 | } | |
353 | #endif | |
354 | ||
aadef0a1 CLC |
355 | uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name, |
356 | uint64_t default_val) | |
357 | { | |
358 | const uint64_t *cell64; | |
359 | int length; | |
360 | ||
361 | cell64 = fdt_getprop(blob, node, prop_name, &length); | |
362 | if (!cell64 || length < sizeof(*cell64)) | |
363 | return default_val; | |
364 | ||
365 | return fdt64_to_cpu(*cell64); | |
366 | } | |
367 | ||
f88fe2de | 368 | int fdtdec_get_is_enabled(const void *blob, int node) |
b5220bc6 SG |
369 | { |
370 | const char *cell; | |
371 | ||
f88fe2de SG |
372 | /* |
373 | * It should say "okay", so only allow that. Some fdts use "ok" but | |
374 | * this is a bug. Please fix your device tree source file. See here | |
375 | * for discussion: | |
376 | * | |
377 | * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html | |
378 | */ | |
b5220bc6 SG |
379 | cell = fdt_getprop(blob, node, "status", NULL); |
380 | if (cell) | |
f88fe2de SG |
381 | return 0 == strcmp(cell, "okay"); |
382 | return 1; | |
b5220bc6 SG |
383 | } |
384 | ||
7cde397b | 385 | enum fdt_compat_id fdtdec_lookup(const void *blob, int node) |
b5220bc6 SG |
386 | { |
387 | enum fdt_compat_id id; | |
388 | ||
389 | /* Search our drivers */ | |
390 | for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++) | |
391 | if (0 == fdt_node_check_compatible(blob, node, | |
392 | compat_names[id])) | |
393 | return id; | |
394 | return COMPAT_UNKNOWN; | |
395 | } | |
396 | ||
397 | int fdtdec_next_compatible(const void *blob, int node, | |
398 | enum fdt_compat_id id) | |
399 | { | |
400 | return fdt_node_offset_by_compatible(blob, node, compat_names[id]); | |
401 | } | |
402 | ||
3ddecfc7 SG |
403 | int fdtdec_next_compatible_subnode(const void *blob, int node, |
404 | enum fdt_compat_id id, int *depthp) | |
405 | { | |
406 | do { | |
407 | node = fdt_next_node(blob, node, depthp); | |
408 | } while (*depthp > 1); | |
409 | ||
410 | /* If this is a direct subnode, and compatible, return it */ | |
411 | if (*depthp == 1 && 0 == fdt_node_check_compatible( | |
412 | blob, node, compat_names[id])) | |
413 | return node; | |
414 | ||
415 | return -FDT_ERR_NOTFOUND; | |
416 | } | |
417 | ||
b5220bc6 SG |
418 | int fdtdec_next_alias(const void *blob, const char *name, |
419 | enum fdt_compat_id id, int *upto) | |
420 | { | |
421 | #define MAX_STR_LEN 20 | |
422 | char str[MAX_STR_LEN + 20]; | |
423 | int node, err; | |
424 | ||
425 | /* snprintf() is not available */ | |
426 | assert(strlen(name) < MAX_STR_LEN); | |
427 | sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto); | |
00878476 | 428 | node = fdt_path_offset(blob, str); |
b5220bc6 SG |
429 | if (node < 0) |
430 | return node; | |
431 | err = fdt_node_check_compatible(blob, node, compat_names[id]); | |
432 | if (err < 0) | |
433 | return err; | |
f88fe2de SG |
434 | if (err) |
435 | return -FDT_ERR_NOTFOUND; | |
436 | (*upto)++; | |
437 | return node; | |
b5220bc6 SG |
438 | } |
439 | ||
a53f4a29 SG |
440 | int fdtdec_find_aliases_for_id(const void *blob, const char *name, |
441 | enum fdt_compat_id id, int *node_list, int maxcount) | |
c6782270 SG |
442 | { |
443 | memset(node_list, '\0', sizeof(*node_list) * maxcount); | |
444 | ||
445 | return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount); | |
446 | } | |
447 | ||
448 | /* TODO: Can we tighten this code up a little? */ | |
449 | int fdtdec_add_aliases_for_id(const void *blob, const char *name, | |
450 | enum fdt_compat_id id, int *node_list, int maxcount) | |
a53f4a29 SG |
451 | { |
452 | int name_len = strlen(name); | |
453 | int nodes[maxcount]; | |
454 | int num_found = 0; | |
455 | int offset, node; | |
456 | int alias_node; | |
457 | int count; | |
458 | int i, j; | |
459 | ||
460 | /* find the alias node if present */ | |
461 | alias_node = fdt_path_offset(blob, "/aliases"); | |
462 | ||
463 | /* | |
464 | * start with nothing, and we can assume that the root node can't | |
465 | * match | |
466 | */ | |
467 | memset(nodes, '\0', sizeof(nodes)); | |
468 | ||
469 | /* First find all the compatible nodes */ | |
470 | for (node = count = 0; node >= 0 && count < maxcount;) { | |
471 | node = fdtdec_next_compatible(blob, node, id); | |
472 | if (node >= 0) | |
473 | nodes[count++] = node; | |
474 | } | |
475 | if (node >= 0) | |
476 | debug("%s: warning: maxcount exceeded with alias '%s'\n", | |
477 | __func__, name); | |
478 | ||
479 | /* Now find all the aliases */ | |
a53f4a29 SG |
480 | for (offset = fdt_first_property_offset(blob, alias_node); |
481 | offset > 0; | |
482 | offset = fdt_next_property_offset(blob, offset)) { | |
483 | const struct fdt_property *prop; | |
484 | const char *path; | |
485 | int number; | |
486 | int found; | |
487 | ||
488 | node = 0; | |
489 | prop = fdt_get_property_by_offset(blob, offset, NULL); | |
490 | path = fdt_string(blob, fdt32_to_cpu(prop->nameoff)); | |
491 | if (prop->len && 0 == strncmp(path, name, name_len)) | |
492 | node = fdt_path_offset(blob, prop->data); | |
493 | if (node <= 0) | |
494 | continue; | |
495 | ||
496 | /* Get the alias number */ | |
497 | number = simple_strtoul(path + name_len, NULL, 10); | |
498 | if (number < 0 || number >= maxcount) { | |
499 | debug("%s: warning: alias '%s' is out of range\n", | |
500 | __func__, path); | |
501 | continue; | |
502 | } | |
503 | ||
504 | /* Make sure the node we found is actually in our list! */ | |
505 | found = -1; | |
506 | for (j = 0; j < count; j++) | |
507 | if (nodes[j] == node) { | |
508 | found = j; | |
509 | break; | |
510 | } | |
511 | ||
512 | if (found == -1) { | |
513 | debug("%s: warning: alias '%s' points to a node " | |
514 | "'%s' that is missing or is not compatible " | |
515 | " with '%s'\n", __func__, path, | |
516 | fdt_get_name(blob, node, NULL), | |
517 | compat_names[id]); | |
518 | continue; | |
519 | } | |
520 | ||
521 | /* | |
522 | * Add this node to our list in the right place, and mark | |
523 | * it as done. | |
524 | */ | |
525 | if (fdtdec_get_is_enabled(blob, node)) { | |
c6782270 SG |
526 | if (node_list[number]) { |
527 | debug("%s: warning: alias '%s' requires that " | |
528 | "a node be placed in the list in a " | |
529 | "position which is already filled by " | |
530 | "node '%s'\n", __func__, path, | |
531 | fdt_get_name(blob, node, NULL)); | |
532 | continue; | |
533 | } | |
a53f4a29 SG |
534 | node_list[number] = node; |
535 | if (number >= num_found) | |
536 | num_found = number + 1; | |
537 | } | |
c6782270 | 538 | nodes[found] = 0; |
a53f4a29 SG |
539 | } |
540 | ||
541 | /* Add any nodes not mentioned by an alias */ | |
542 | for (i = j = 0; i < maxcount; i++) { | |
543 | if (!node_list[i]) { | |
544 | for (; j < maxcount; j++) | |
545 | if (nodes[j] && | |
546 | fdtdec_get_is_enabled(blob, nodes[j])) | |
547 | break; | |
548 | ||
549 | /* Have we run out of nodes to add? */ | |
550 | if (j == maxcount) | |
551 | break; | |
552 | ||
553 | assert(!node_list[i]); | |
554 | node_list[i] = nodes[j++]; | |
555 | if (i >= num_found) | |
556 | num_found = i + 1; | |
557 | } | |
558 | } | |
559 | ||
560 | return num_found; | |
561 | } | |
562 | ||
5c33c9fd SG |
563 | int fdtdec_get_alias_seq(const void *blob, const char *base, int offset, |
564 | int *seqp) | |
565 | { | |
566 | int base_len = strlen(base); | |
567 | const char *find_name; | |
568 | int find_namelen; | |
569 | int prop_offset; | |
570 | int aliases; | |
571 | ||
572 | find_name = fdt_get_name(blob, offset, &find_namelen); | |
573 | debug("Looking for '%s' at %d, name %s\n", base, offset, find_name); | |
574 | ||
575 | aliases = fdt_path_offset(blob, "/aliases"); | |
576 | for (prop_offset = fdt_first_property_offset(blob, aliases); | |
577 | prop_offset > 0; | |
578 | prop_offset = fdt_next_property_offset(blob, prop_offset)) { | |
579 | const char *prop; | |
580 | const char *name; | |
581 | const char *slash; | |
c4af6732 | 582 | int len, val; |
5c33c9fd SG |
583 | |
584 | prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len); | |
585 | debug(" - %s, %s\n", name, prop); | |
586 | if (len < find_namelen || *prop != '/' || prop[len - 1] || | |
587 | strncmp(name, base, base_len)) | |
588 | continue; | |
589 | ||
590 | slash = strrchr(prop, '/'); | |
591 | if (strcmp(slash + 1, find_name)) | |
592 | continue; | |
c4af6732 SG |
593 | val = trailing_strtol(name); |
594 | if (val != -1) { | |
595 | *seqp = val; | |
596 | debug("Found seq %d\n", *seqp); | |
597 | return 0; | |
5c33c9fd SG |
598 | } |
599 | } | |
600 | ||
601 | debug("Not found\n"); | |
602 | return -ENOENT; | |
603 | } | |
604 | ||
3bc37a50 | 605 | const char *fdtdec_get_chosen_prop(const void *blob, const char *name) |
aac07d49 | 606 | { |
aac07d49 | 607 | int chosen_node; |
aac07d49 SG |
608 | |
609 | if (!blob) | |
3bc37a50 | 610 | return NULL; |
aac07d49 | 611 | chosen_node = fdt_path_offset(blob, "/chosen"); |
3bc37a50 SG |
612 | return fdt_getprop(blob, chosen_node, name, NULL); |
613 | } | |
614 | ||
615 | int fdtdec_get_chosen_node(const void *blob, const char *name) | |
616 | { | |
617 | const char *prop; | |
618 | ||
619 | prop = fdtdec_get_chosen_prop(blob, name); | |
aac07d49 SG |
620 | if (!prop) |
621 | return -FDT_ERR_NOTFOUND; | |
622 | return fdt_path_offset(blob, prop); | |
623 | } | |
624 | ||
9a263e55 SG |
625 | int fdtdec_check_fdt(void) |
626 | { | |
627 | /* | |
628 | * We must have an FDT, but we cannot panic() yet since the console | |
629 | * is not ready. So for now, just assert(). Boards which need an early | |
630 | * FDT (prior to console ready) will need to make their own | |
631 | * arrangements and do their own checks. | |
632 | */ | |
633 | assert(!fdtdec_prepare_fdt()); | |
634 | return 0; | |
635 | } | |
636 | ||
b5220bc6 SG |
637 | /* |
638 | * This function is a little odd in that it accesses global data. At some | |
639 | * point if the architecture board.c files merge this will make more sense. | |
640 | * Even now, it is common code. | |
641 | */ | |
9a263e55 | 642 | int fdtdec_prepare_fdt(void) |
b5220bc6 | 643 | { |
c309c2da SG |
644 | if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) || |
645 | fdt_check_header(gd->fdt_blob)) { | |
66312374 SG |
646 | #ifdef CONFIG_SPL_BUILD |
647 | puts("Missing DTB\n"); | |
648 | #else | |
649 | 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 |
650 | # ifdef DEBUG |
651 | if (gd->fdt_blob) { | |
652 | printf("fdt_blob=%p\n", gd->fdt_blob); | |
653 | print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4, | |
654 | 32, 0); | |
655 | } | |
656 | # endif | |
66312374 | 657 | #endif |
9a263e55 SG |
658 | return -1; |
659 | } | |
b5220bc6 SG |
660 | return 0; |
661 | } | |
d17da655 SG |
662 | |
663 | int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name) | |
664 | { | |
665 | const u32 *phandle; | |
666 | int lookup; | |
667 | ||
1cb2323b | 668 | debug("%s: %s\n", __func__, prop_name); |
d17da655 SG |
669 | phandle = fdt_getprop(blob, node, prop_name, NULL); |
670 | if (!phandle) | |
671 | return -FDT_ERR_NOTFOUND; | |
672 | ||
673 | lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle)); | |
674 | return lookup; | |
675 | } | |
676 | ||
677 | /** | |
678 | * Look up a property in a node and check that it has a minimum length. | |
679 | * | |
680 | * @param blob FDT blob | |
681 | * @param node node to examine | |
682 | * @param prop_name name of property to find | |
683 | * @param min_len minimum property length in bytes | |
684 | * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not | |
685 | found, or -FDT_ERR_BADLAYOUT if not enough data | |
686 | * @return pointer to cell, which is only valid if err == 0 | |
687 | */ | |
688 | static const void *get_prop_check_min_len(const void *blob, int node, | |
689 | const char *prop_name, int min_len, int *err) | |
690 | { | |
691 | const void *cell; | |
692 | int len; | |
693 | ||
694 | debug("%s: %s\n", __func__, prop_name); | |
695 | cell = fdt_getprop(blob, node, prop_name, &len); | |
696 | if (!cell) | |
697 | *err = -FDT_ERR_NOTFOUND; | |
698 | else if (len < min_len) | |
699 | *err = -FDT_ERR_BADLAYOUT; | |
700 | else | |
701 | *err = 0; | |
702 | return cell; | |
703 | } | |
704 | ||
705 | int fdtdec_get_int_array(const void *blob, int node, const char *prop_name, | |
706 | u32 *array, int count) | |
707 | { | |
708 | const u32 *cell; | |
709 | int i, err = 0; | |
710 | ||
711 | debug("%s: %s\n", __func__, prop_name); | |
712 | cell = get_prop_check_min_len(blob, node, prop_name, | |
713 | sizeof(u32) * count, &err); | |
714 | if (!err) { | |
715 | for (i = 0; i < count; i++) | |
716 | array[i] = fdt32_to_cpu(cell[i]); | |
717 | } | |
718 | return err; | |
719 | } | |
720 | ||
a9f04d49 SG |
721 | int fdtdec_get_int_array_count(const void *blob, int node, |
722 | const char *prop_name, u32 *array, int count) | |
723 | { | |
724 | const u32 *cell; | |
725 | int len, elems; | |
726 | int i; | |
727 | ||
728 | debug("%s: %s\n", __func__, prop_name); | |
729 | cell = fdt_getprop(blob, node, prop_name, &len); | |
730 | if (!cell) | |
731 | return -FDT_ERR_NOTFOUND; | |
732 | elems = len / sizeof(u32); | |
733 | if (count > elems) | |
734 | count = elems; | |
735 | for (i = 0; i < count; i++) | |
736 | array[i] = fdt32_to_cpu(cell[i]); | |
737 | ||
738 | return count; | |
739 | } | |
740 | ||
96875e7d SG |
741 | const u32 *fdtdec_locate_array(const void *blob, int node, |
742 | const char *prop_name, int count) | |
743 | { | |
744 | const u32 *cell; | |
745 | int err; | |
746 | ||
747 | cell = get_prop_check_min_len(blob, node, prop_name, | |
748 | sizeof(u32) * count, &err); | |
749 | return err ? NULL : cell; | |
750 | } | |
751 | ||
d17da655 SG |
752 | int fdtdec_get_bool(const void *blob, int node, const char *prop_name) |
753 | { | |
754 | const s32 *cell; | |
755 | int len; | |
756 | ||
757 | debug("%s: %s\n", __func__, prop_name); | |
758 | cell = fdt_getprop(blob, node, prop_name, &len); | |
759 | return cell != NULL; | |
760 | } | |
ed3ee5cd | 761 | |
57068a7a SG |
762 | int fdtdec_parse_phandle_with_args(const void *blob, int src_node, |
763 | const char *list_name, | |
764 | const char *cells_name, | |
765 | int cell_count, int index, | |
766 | struct fdtdec_phandle_args *out_args) | |
767 | { | |
768 | const __be32 *list, *list_end; | |
769 | int rc = 0, size, cur_index = 0; | |
770 | uint32_t count = 0; | |
771 | int node = -1; | |
772 | int phandle; | |
773 | ||
774 | /* Retrieve the phandle list property */ | |
775 | list = fdt_getprop(blob, src_node, list_name, &size); | |
776 | if (!list) | |
777 | return -ENOENT; | |
778 | list_end = list + size / sizeof(*list); | |
779 | ||
780 | /* Loop over the phandles until all the requested entry is found */ | |
781 | while (list < list_end) { | |
782 | rc = -EINVAL; | |
783 | count = 0; | |
784 | ||
785 | /* | |
786 | * If phandle is 0, then it is an empty entry with no | |
787 | * arguments. Skip forward to the next entry. | |
788 | */ | |
789 | phandle = be32_to_cpup(list++); | |
790 | if (phandle) { | |
791 | /* | |
792 | * Find the provider node and parse the #*-cells | |
793 | * property to determine the argument length. | |
794 | * | |
795 | * This is not needed if the cell count is hard-coded | |
796 | * (i.e. cells_name not set, but cell_count is set), | |
797 | * except when we're going to return the found node | |
798 | * below. | |
799 | */ | |
800 | if (cells_name || cur_index == index) { | |
801 | node = fdt_node_offset_by_phandle(blob, | |
802 | phandle); | |
803 | if (!node) { | |
804 | debug("%s: could not find phandle\n", | |
805 | fdt_get_name(blob, src_node, | |
806 | NULL)); | |
807 | goto err; | |
808 | } | |
809 | } | |
810 | ||
811 | if (cells_name) { | |
812 | count = fdtdec_get_int(blob, node, cells_name, | |
813 | -1); | |
814 | if (count == -1) { | |
815 | debug("%s: could not get %s for %s\n", | |
816 | fdt_get_name(blob, src_node, | |
817 | NULL), | |
818 | cells_name, | |
819 | fdt_get_name(blob, node, | |
820 | NULL)); | |
821 | goto err; | |
822 | } | |
823 | } else { | |
824 | count = cell_count; | |
825 | } | |
826 | ||
827 | /* | |
828 | * Make sure that the arguments actually fit in the | |
829 | * remaining property data length | |
830 | */ | |
831 | if (list + count > list_end) { | |
832 | debug("%s: arguments longer than property\n", | |
833 | fdt_get_name(blob, src_node, NULL)); | |
834 | goto err; | |
835 | } | |
836 | } | |
837 | ||
838 | /* | |
839 | * All of the error cases above bail out of the loop, so at | |
840 | * this point, the parsing is successful. If the requested | |
841 | * index matches, then fill the out_args structure and return, | |
842 | * or return -ENOENT for an empty entry. | |
843 | */ | |
844 | rc = -ENOENT; | |
845 | if (cur_index == index) { | |
846 | if (!phandle) | |
847 | goto err; | |
848 | ||
849 | if (out_args) { | |
850 | int i; | |
851 | ||
852 | if (count > MAX_PHANDLE_ARGS) { | |
853 | debug("%s: too many arguments %d\n", | |
854 | fdt_get_name(blob, src_node, | |
855 | NULL), count); | |
856 | count = MAX_PHANDLE_ARGS; | |
857 | } | |
858 | out_args->node = node; | |
859 | out_args->args_count = count; | |
860 | for (i = 0; i < count; i++) { | |
861 | out_args->args[i] = | |
862 | be32_to_cpup(list++); | |
863 | } | |
864 | } | |
865 | ||
866 | /* Found it! return success */ | |
867 | return 0; | |
868 | } | |
869 | ||
870 | node = -1; | |
871 | list += count; | |
872 | cur_index++; | |
873 | } | |
874 | ||
875 | /* | |
876 | * Result will be one of: | |
877 | * -ENOENT : index is for empty phandle | |
878 | * -EINVAL : parsing error on data | |
879 | * [1..n] : Number of phandle (count mode; when index = -1) | |
880 | */ | |
881 | rc = index < 0 ? cur_index : -ENOENT; | |
882 | err: | |
883 | return rc; | |
884 | } | |
885 | ||
bed4d892 AS |
886 | int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name, |
887 | u8 *array, int count) | |
888 | { | |
889 | const u8 *cell; | |
890 | int err; | |
891 | ||
892 | cell = get_prop_check_min_len(blob, node, prop_name, count, &err); | |
893 | if (!err) | |
894 | memcpy(array, cell, count); | |
895 | return err; | |
896 | } | |
897 | ||
898 | const u8 *fdtdec_locate_byte_array(const void *blob, int node, | |
899 | const char *prop_name, int count) | |
900 | { | |
901 | const u8 *cell; | |
902 | int err; | |
903 | ||
904 | cell = get_prop_check_min_len(blob, node, prop_name, count, &err); | |
905 | if (err) | |
906 | return NULL; | |
907 | return cell; | |
908 | } | |
09258f1e | 909 | |
09258f1e AK |
910 | int fdtdec_get_config_int(const void *blob, const char *prop_name, |
911 | int default_val) | |
912 | { | |
913 | int config_node; | |
914 | ||
915 | debug("%s: %s\n", __func__, prop_name); | |
916 | config_node = fdt_path_offset(blob, "/config"); | |
917 | if (config_node < 0) | |
918 | return default_val; | |
919 | return fdtdec_get_int(blob, config_node, prop_name, default_val); | |
920 | } | |
332ab0d5 | 921 | |
79289c0b GB |
922 | int fdtdec_get_config_bool(const void *blob, const char *prop_name) |
923 | { | |
924 | int config_node; | |
925 | const void *prop; | |
926 | ||
927 | debug("%s: %s\n", __func__, prop_name); | |
928 | config_node = fdt_path_offset(blob, "/config"); | |
929 | if (config_node < 0) | |
930 | return 0; | |
931 | prop = fdt_get_property(blob, config_node, prop_name, NULL); | |
932 | ||
933 | return prop != NULL; | |
934 | } | |
935 | ||
332ab0d5 SG |
936 | char *fdtdec_get_config_string(const void *blob, const char *prop_name) |
937 | { | |
938 | const char *nodep; | |
939 | int nodeoffset; | |
940 | int len; | |
941 | ||
942 | debug("%s: %s\n", __func__, prop_name); | |
943 | nodeoffset = fdt_path_offset(blob, "/config"); | |
944 | if (nodeoffset < 0) | |
945 | return NULL; | |
946 | ||
947 | nodep = fdt_getprop(blob, nodeoffset, prop_name, &len); | |
948 | if (!nodep) | |
949 | return NULL; | |
950 | ||
951 | return (char *)nodep; | |
952 | } | |
f20c4619 | 953 | |
76489832 SG |
954 | int fdtdec_decode_region(const void *blob, int node, const char *prop_name, |
955 | fdt_addr_t *basep, fdt_size_t *sizep) | |
f20c4619 SG |
956 | { |
957 | const fdt_addr_t *cell; | |
958 | int len; | |
959 | ||
76489832 SG |
960 | debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL), |
961 | prop_name); | |
f20c4619 | 962 | cell = fdt_getprop(blob, node, prop_name, &len); |
76489832 SG |
963 | if (!cell || (len < sizeof(fdt_addr_t) * 2)) { |
964 | debug("cell=%p, len=%d\n", cell, len); | |
f20c4619 | 965 | return -1; |
76489832 SG |
966 | } |
967 | ||
968 | *basep = fdt_addr_to_cpu(*cell); | |
969 | *sizep = fdt_size_to_cpu(cell[1]); | |
970 | debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep, | |
971 | (ulong)*sizep); | |
f20c4619 | 972 | |
f20c4619 SG |
973 | return 0; |
974 | } | |
006e73b9 SG |
975 | |
976 | /** | |
977 | * Read a flash entry from the fdt | |
978 | * | |
979 | * @param blob FDT blob | |
980 | * @param node Offset of node to read | |
981 | * @param name Name of node being read | |
982 | * @param entry Place to put offset and size of this node | |
983 | * @return 0 if ok, -ve on error | |
984 | */ | |
985 | int fdtdec_read_fmap_entry(const void *blob, int node, const char *name, | |
986 | struct fmap_entry *entry) | |
987 | { | |
f3cc44f9 | 988 | const char *prop; |
006e73b9 SG |
989 | u32 reg[2]; |
990 | ||
991 | if (fdtdec_get_int_array(blob, node, "reg", reg, 2)) { | |
992 | debug("Node '%s' has bad/missing 'reg' property\n", name); | |
993 | return -FDT_ERR_NOTFOUND; | |
994 | } | |
995 | entry->offset = reg[0]; | |
996 | entry->length = reg[1]; | |
f3cc44f9 SG |
997 | entry->used = fdtdec_get_int(blob, node, "used", entry->length); |
998 | prop = fdt_getprop(blob, node, "compress", NULL); | |
999 | entry->compress_algo = prop && !strcmp(prop, "lzo") ? | |
1000 | FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE; | |
1001 | prop = fdt_getprop(blob, node, "hash", &entry->hash_size); | |
1002 | entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE; | |
1003 | entry->hash = (uint8_t *)prop; | |
006e73b9 SG |
1004 | |
1005 | return 0; | |
1006 | } | |
56f42242 | 1007 | |
5f7bfdd6 | 1008 | u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells) |
56f42242 TR |
1009 | { |
1010 | u64 number = 0; | |
1011 | ||
1012 | while (cells--) | |
1013 | number = (number << 32) | fdt32_to_cpu(*ptr++); | |
1014 | ||
1015 | return number; | |
1016 | } | |
1017 | ||
1018 | int fdt_get_resource(const void *fdt, int node, const char *property, | |
1019 | unsigned int index, struct fdt_resource *res) | |
1020 | { | |
1021 | const fdt32_t *ptr, *end; | |
1022 | int na, ns, len, parent; | |
1023 | unsigned int i = 0; | |
1024 | ||
1025 | parent = fdt_parent_offset(fdt, node); | |
1026 | if (parent < 0) | |
1027 | return parent; | |
1028 | ||
1029 | na = fdt_address_cells(fdt, parent); | |
1030 | ns = fdt_size_cells(fdt, parent); | |
1031 | ||
1032 | ptr = fdt_getprop(fdt, node, property, &len); | |
1033 | if (!ptr) | |
1034 | return len; | |
1035 | ||
1036 | end = ptr + len / sizeof(*ptr); | |
1037 | ||
1038 | while (ptr + na + ns <= end) { | |
1039 | if (i == index) { | |
1040 | res->start = res->end = fdtdec_get_number(ptr, na); | |
1041 | res->end += fdtdec_get_number(&ptr[na], ns) - 1; | |
1042 | return 0; | |
1043 | } | |
1044 | ||
1045 | ptr += na + ns; | |
1046 | i++; | |
1047 | } | |
1048 | ||
1049 | return -FDT_ERR_NOTFOUND; | |
1050 | } | |
1051 | ||
1052 | int fdt_get_named_resource(const void *fdt, int node, const char *property, | |
1053 | const char *prop_names, const char *name, | |
1054 | struct fdt_resource *res) | |
1055 | { | |
1056 | int index; | |
1057 | ||
1058 | index = fdt_find_string(fdt, node, prop_names, name); | |
1059 | if (index < 0) | |
1060 | return index; | |
1061 | ||
1062 | return fdt_get_resource(fdt, node, property, index, res); | |
1063 | } | |
9f85eee7 | 1064 | |
26403871 SG |
1065 | int fdtdec_decode_memory_region(const void *blob, int config_node, |
1066 | const char *mem_type, const char *suffix, | |
1067 | fdt_addr_t *basep, fdt_size_t *sizep) | |
1068 | { | |
1069 | char prop_name[50]; | |
1070 | const char *mem; | |
1071 | fdt_size_t size, offset_size; | |
1072 | fdt_addr_t base, offset; | |
1073 | int node; | |
1074 | ||
1075 | if (config_node == -1) { | |
1076 | config_node = fdt_path_offset(blob, "/config"); | |
1077 | if (config_node < 0) { | |
1078 | debug("%s: Cannot find /config node\n", __func__); | |
1079 | return -ENOENT; | |
1080 | } | |
1081 | } | |
1082 | if (!suffix) | |
1083 | suffix = ""; | |
1084 | ||
1085 | snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type, | |
1086 | suffix); | |
1087 | mem = fdt_getprop(blob, config_node, prop_name, NULL); | |
1088 | if (!mem) { | |
1089 | debug("%s: No memory type for '%s', using /memory\n", __func__, | |
1090 | prop_name); | |
1091 | mem = "/memory"; | |
1092 | } | |
1093 | ||
1094 | node = fdt_path_offset(blob, mem); | |
1095 | if (node < 0) { | |
1096 | debug("%s: Failed to find node '%s': %s\n", __func__, mem, | |
1097 | fdt_strerror(node)); | |
1098 | return -ENOENT; | |
1099 | } | |
1100 | ||
1101 | /* | |
1102 | * Not strictly correct - the memory may have multiple banks. We just | |
1103 | * use the first | |
1104 | */ | |
1105 | if (fdtdec_decode_region(blob, node, "reg", &base, &size)) { | |
1106 | debug("%s: Failed to decode memory region %s\n", __func__, | |
1107 | mem); | |
1108 | return -EINVAL; | |
1109 | } | |
1110 | ||
1111 | snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type, | |
1112 | suffix); | |
1113 | if (fdtdec_decode_region(blob, config_node, prop_name, &offset, | |
1114 | &offset_size)) { | |
1115 | debug("%s: Failed to decode memory region '%s'\n", __func__, | |
1116 | prop_name); | |
1117 | return -EINVAL; | |
1118 | } | |
1119 | ||
1120 | *basep = base + offset; | |
1121 | *sizep = offset_size; | |
1122 | ||
1123 | return 0; | |
1124 | } | |
b45122fd | 1125 | |
12e67114 SG |
1126 | static int decode_timing_property(const void *blob, int node, const char *name, |
1127 | struct timing_entry *result) | |
1128 | { | |
1129 | int length, ret = 0; | |
1130 | const u32 *prop; | |
1131 | ||
1132 | prop = fdt_getprop(blob, node, name, &length); | |
1133 | if (!prop) { | |
1134 | debug("%s: could not find property %s\n", | |
1135 | fdt_get_name(blob, node, NULL), name); | |
1136 | return length; | |
1137 | } | |
1138 | ||
1139 | if (length == sizeof(u32)) { | |
1140 | result->typ = fdtdec_get_int(blob, node, name, 0); | |
1141 | result->min = result->typ; | |
1142 | result->max = result->typ; | |
1143 | } else { | |
1144 | ret = fdtdec_get_int_array(blob, node, name, &result->min, 3); | |
1145 | } | |
1146 | ||
1147 | return ret; | |
1148 | } | |
1149 | ||
1150 | int fdtdec_decode_display_timing(const void *blob, int parent, int index, | |
1151 | struct display_timing *dt) | |
1152 | { | |
1153 | int i, node, timings_node; | |
1154 | u32 val = 0; | |
1155 | int ret = 0; | |
1156 | ||
1157 | timings_node = fdt_subnode_offset(blob, parent, "display-timings"); | |
1158 | if (timings_node < 0) | |
1159 | return timings_node; | |
1160 | ||
1161 | for (i = 0, node = fdt_first_subnode(blob, timings_node); | |
1162 | node > 0 && i != index; | |
1163 | node = fdt_next_subnode(blob, node)) | |
1164 | i++; | |
1165 | ||
1166 | if (node < 0) | |
1167 | return node; | |
1168 | ||
1169 | memset(dt, 0, sizeof(*dt)); | |
1170 | ||
1171 | ret |= decode_timing_property(blob, node, "hback-porch", | |
1172 | &dt->hback_porch); | |
1173 | ret |= decode_timing_property(blob, node, "hfront-porch", | |
1174 | &dt->hfront_porch); | |
1175 | ret |= decode_timing_property(blob, node, "hactive", &dt->hactive); | |
1176 | ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len); | |
1177 | ret |= decode_timing_property(blob, node, "vback-porch", | |
1178 | &dt->vback_porch); | |
1179 | ret |= decode_timing_property(blob, node, "vfront-porch", | |
1180 | &dt->vfront_porch); | |
1181 | ret |= decode_timing_property(blob, node, "vactive", &dt->vactive); | |
1182 | ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len); | |
1183 | ret |= decode_timing_property(blob, node, "clock-frequency", | |
1184 | &dt->pixelclock); | |
1185 | ||
1186 | dt->flags = 0; | |
1187 | val = fdtdec_get_int(blob, node, "vsync-active", -1); | |
1188 | if (val != -1) { | |
1189 | dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH : | |
1190 | DISPLAY_FLAGS_VSYNC_LOW; | |
1191 | } | |
1192 | val = fdtdec_get_int(blob, node, "hsync-active", -1); | |
1193 | if (val != -1) { | |
1194 | dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH : | |
1195 | DISPLAY_FLAGS_HSYNC_LOW; | |
1196 | } | |
1197 | val = fdtdec_get_int(blob, node, "de-active", -1); | |
1198 | if (val != -1) { | |
1199 | dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH : | |
1200 | DISPLAY_FLAGS_DE_LOW; | |
1201 | } | |
1202 | val = fdtdec_get_int(blob, node, "pixelclk-active", -1); | |
1203 | if (val != -1) { | |
1204 | dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE : | |
1205 | DISPLAY_FLAGS_PIXDATA_NEGEDGE; | |
1206 | } | |
1207 | ||
1208 | if (fdtdec_get_bool(blob, node, "interlaced")) | |
1209 | dt->flags |= DISPLAY_FLAGS_INTERLACED; | |
1210 | if (fdtdec_get_bool(blob, node, "doublescan")) | |
1211 | dt->flags |= DISPLAY_FLAGS_DOUBLESCAN; | |
1212 | if (fdtdec_get_bool(blob, node, "doubleclk")) | |
1213 | dt->flags |= DISPLAY_FLAGS_DOUBLECLK; | |
1214 | ||
1215 | return 0; | |
1216 | } | |
1217 | ||
0879361f | 1218 | int fdtdec_setup(void) |
b45122fd | 1219 | { |
0f925822 | 1220 | #if CONFIG_IS_ENABLED(OF_CONTROL) |
b45122fd SG |
1221 | # ifdef CONFIG_OF_EMBED |
1222 | /* Get a pointer to the FDT */ | |
1223 | gd->fdt_blob = __dtb_dt_begin; | |
1224 | # elif defined CONFIG_OF_SEPARATE | |
1225 | # ifdef CONFIG_SPL_BUILD | |
10172962 SG |
1226 | /* FDT is at end of BSS unless it is in a different memory region */ |
1227 | if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS)) | |
1228 | gd->fdt_blob = (ulong *)&_image_binary_end; | |
1229 | else | |
1230 | gd->fdt_blob = (ulong *)&__bss_end; | |
b45122fd SG |
1231 | # else |
1232 | /* FDT is at end of image */ | |
1233 | gd->fdt_blob = (ulong *)&_end; | |
3bd926cc | 1234 | # endif |
b45122fd SG |
1235 | # elif defined(CONFIG_OF_HOSTFILE) |
1236 | if (sandbox_read_fdt_from_file()) { | |
1237 | puts("Failed to read control FDT\n"); | |
1238 | return -1; | |
1239 | } | |
1240 | # endif | |
1241 | # ifndef CONFIG_SPL_BUILD | |
1242 | /* Allow the early environment to override the fdt address */ | |
1243 | gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, | |
1244 | (uintptr_t)gd->fdt_blob); | |
1245 | # endif | |
29a23f9d | 1246 | #endif |
0879361f | 1247 | return fdtdec_prepare_fdt(); |
b45122fd SG |
1248 | } |
1249 | ||
1250 | #endif /* !USE_HOSTCC */ |