blob: 91503b8cb922010829e0679544929f66a937213b [file] [log] [blame]
Simon Glassb5220bc2011-10-24 19:15:32 +00001/*
2 * Copyright (c) 2011 The Chromium OS Authors.
Wolfgang Denk1a459662013-07-08 09:37:19 +02003 * SPDX-License-Identifier: GPL-2.0+
Simon Glassb5220bc2011-10-24 19:15:32 +00004 */
5
Heiko Schocher29a23f92014-03-03 12:19:30 +01006#ifndef USE_HOSTCC
Simon Glassb5220bc2011-10-24 19:15:32 +00007#include <common.h>
Simon Glassfcc0a872015-11-29 13:17:54 -07008#include <dm.h>
Simon Glass5c33c9f2014-07-23 06:55:09 -06009#include <errno.h>
Simon Glassb5220bc2011-10-24 19:15:32 +000010#include <serial.h>
11#include <libfdt.h>
Stephen Warren6e06acb2016-08-05 09:47:51 -060012#include <fdt_support.h>
Simon Glassb5220bc2011-10-24 19:15:32 +000013#include <fdtdec.h>
Simon Glassb45122f2015-02-27 22:06:34 -070014#include <asm/sections.h>
Simon Glassb7e0d732017-05-18 20:09:02 -060015#include <dm/of_extra.h>
Simon Glass5c33c9f2014-07-23 06:55:09 -060016#include <linux/ctype.h>
Simon Glassb5220bc2011-10-24 19:15:32 +000017
18DECLARE_GLOBAL_DATA_PTR;
19
20/*
21 * Here are the type we know about. One day we might allow drivers to
22 * register. For now we just put them here. The COMPAT macro allows us to
23 * turn this into a sparse list later, and keeps the ID with the name.
Simon Glass01a227d2016-06-19 17:33:13 -060024 *
25 * NOTE: This list is basically a TODO list for things that need to be
26 * converted to driver model. So don't add new things here unless there is a
27 * good reason why driver-model conversion is infeasible. Examples include
28 * things which are used before driver model is available.
Simon Glassb5220bc2011-10-24 19:15:32 +000029 */
30#define COMPAT(id, name) name
31static const char * const compat_names[COMPAT_COUNT] = {
Simon Glassf88fe2d2012-02-27 10:52:34 +000032 COMPAT(UNKNOWN, "<none>"),
Jimmy Zhang0e35ad02012-04-02 13:18:52 +000033 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
34 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
Jim Lin312693c2012-07-29 20:53:29 +000035 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
Simon Glass00f37322015-04-14 21:03:40 -060036 COMPAT(NVIDIA_TEGRA124_PMC, "nvidia,tegra124-pmc"),
Stephen Warren39f63332016-05-12 12:11:23 -060037 COMPAT(NVIDIA_TEGRA186_SDMMC, "nvidia,tegra186-sdhci"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070038 COMPAT(NVIDIA_TEGRA210_SDMMC, "nvidia,tegra210-sdhci"),
Stephen Warrena73ca472014-01-24 12:46:06 -070039 COMPAT(NVIDIA_TEGRA124_SDMMC, "nvidia,tegra124-sdhci"),
Tom Warrenf4e4e0b2013-03-04 14:07:18 -070040 COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"),
Tom Warrenc9aa8312013-02-21 12:31:30 +000041 COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"),
Thierry Reding79c7a902014-12-09 22:25:09 -070042 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070043 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
Hatim RVcc9fe332012-12-11 00:52:46 +000044 COMPAT(SMSC_LAN9215, "smsc,lan9215"),
45 COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
Rajeshwari Shindec34253d2012-12-26 20:03:10 +000046 COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"),
Rajeshwari Shinde72dbff12012-12-26 20:03:16 +000047 COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"),
48 COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"),
Rajeshwari Shinde6abd1622013-01-07 23:35:05 +000049 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
Vivek Gautam108b85b2013-09-14 14:02:48 +053050 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
Akshay Saraswat618766c2013-02-25 01:13:01 +000051 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
Piotr Wilczekde461c52014-03-07 14:59:39 +010052 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
Jaehoon Chung7d3ca0f2014-05-16 13:59:51 +090053 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
Piotr Wilczek3577fe82014-03-07 14:59:41 +010054 COMPAT(SAMSUNG_EXYNOS_MMC, "samsung,exynos-mmc"),
Przemyslaw Marczakf37df0f2015-04-20 20:07:45 +020055 COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686"),
Simon Glassbb8215f2013-03-11 06:08:08 +000056 COMPAT(GENERIC_SPI_FLASH, "spi-flash"),
Rajeshwari Shinde7772bb72013-02-14 19:46:15 +000057 COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"),
naveen krishna chatradhiecbd7e12013-04-29 15:58:52 -070058 COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"),
Ajay Kumar45c480c2014-09-05 16:53:33 +053059 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
Simon Glass77f9b1f2014-11-12 22:42:21 -070060 COMPAT(INTEL_MICROCODE, "intel,microcode"),
Thierry Reding6173c452014-12-09 22:25:05 -070061 COMPAT(AMS_AS3722, "ams,as3722"),
Bin Mengc89ada02015-02-05 23:42:26 +080062 COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
Marek Vasut6ab00db2015-07-25 19:33:56 +020063 COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
Marek Vasut129adf52015-07-25 10:48:14 +020064 COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"),
Marek Vasutef4b01b2015-12-05 19:28:44 +010065 COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"),
Simon Glass39ea0ee2016-06-19 17:33:14 -060066 COMPAT(INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"),
67 COMPAT(INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"),
68 COMPAT(INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"),
Boris Brezillon4ccae812016-06-15 21:09:23 +020069 COMPAT(COMPAT_SUNXI_NAND, "allwinner,sun4i-a10-nand"),
Ley Foon Tane11b5e82017-04-05 17:32:47 +080070 COMPAT(ALTERA_SOCFPGA_CLK, "altr,clk-mgr"),
71 COMPAT(ALTERA_SOCFPGA_PINCTRL_SINGLE, "pinctrl-single"),
72 COMPAT(ALTERA_SOCFPGA_H2F_BRG, "altr,socfpga-hps2fpga-bridge"),
73 COMPAT(ALTERA_SOCFPGA_LWH2F_BRG, "altr,socfpga-lwhps2fpga-bridge"),
74 COMPAT(ALTERA_SOCFPGA_F2H_BRG, "altr,socfpga-fpga2hps-bridge"),
75 COMPAT(ALTERA_SOCFPGA_F2SDR0, "altr,socfpga-fpga2sdram0-bridge"),
76 COMPAT(ALTERA_SOCFPGA_F2SDR1, "altr,socfpga-fpga2sdram1-bridge"),
77 COMPAT(ALTERA_SOCFPGA_F2SDR2, "altr,socfpga-fpga2sdram2-bridge"),
Simon Glassb5220bc2011-10-24 19:15:32 +000078};
79
Simon Glassa53f4a22012-01-17 08:20:50 +000080const char *fdtdec_get_compatible(enum fdt_compat_id id)
81{
82 /* We allow reading of the 'unknown' ID for testing purposes */
83 assert(id >= 0 && id < COMPAT_COUNT);
84 return compat_names[id];
85}
86
Stephen Warren02464e32015-08-06 15:31:02 -060087fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
88 const char *prop_name, int index, int na, int ns,
Stephen Warren6e06acb2016-08-05 09:47:51 -060089 fdt_size_t *sizep, bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -060090{
91 const fdt32_t *prop, *prop_end;
92 const fdt32_t *prop_addr, *prop_size, *prop_after_size;
93 int len;
94 fdt_addr_t addr;
95
96 debug("%s: %s: ", __func__, prop_name);
97
98 if (na > (sizeof(fdt_addr_t) / sizeof(fdt32_t))) {
99 debug("(na too large for fdt_addr_t type)\n");
100 return FDT_ADDR_T_NONE;
101 }
102
103 if (ns > (sizeof(fdt_size_t) / sizeof(fdt32_t))) {
104 debug("(ns too large for fdt_size_t type)\n");
105 return FDT_ADDR_T_NONE;
106 }
107
108 prop = fdt_getprop(blob, node, prop_name, &len);
109 if (!prop) {
110 debug("(not found)\n");
111 return FDT_ADDR_T_NONE;
112 }
113 prop_end = prop + (len / sizeof(*prop));
114
115 prop_addr = prop + (index * (na + ns));
116 prop_size = prop_addr + na;
117 prop_after_size = prop_size + ns;
118 if (prop_after_size > prop_end) {
119 debug("(not enough data: expected >= %d cells, got %d cells)\n",
120 (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
121 return FDT_ADDR_T_NONE;
122 }
123
Vignesh R5efa1bf2017-03-20 10:04:38 +0530124#if CONFIG_IS_ENABLED(OF_TRANSLATE)
Stephen Warren6e06acb2016-08-05 09:47:51 -0600125 if (translate)
126 addr = fdt_translate_address(blob, node, prop_addr);
127 else
128#endif
129 addr = fdtdec_get_number(prop_addr, na);
Stephen Warren02464e32015-08-06 15:31:02 -0600130
131 if (sizep) {
132 *sizep = fdtdec_get_number(prop_size, ns);
Simon Glassfd30d2c2016-02-29 15:25:37 -0700133 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
134 (unsigned long long)*sizep);
Stephen Warren02464e32015-08-06 15:31:02 -0600135 } else {
Simon Glassfd30d2c2016-02-29 15:25:37 -0700136 debug("addr=%08llx\n", (unsigned long long)addr);
Stephen Warren02464e32015-08-06 15:31:02 -0600137 }
138
139 return addr;
140}
141
142fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600143 int node, const char *prop_name, int index, fdt_size_t *sizep,
144 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600145{
146 int na, ns;
147
148 debug("%s: ", __func__);
149
150 na = fdt_address_cells(blob, parent);
151 if (na < 1) {
152 debug("(bad #address-cells)\n");
153 return FDT_ADDR_T_NONE;
154 }
155
156 ns = fdt_size_cells(blob, parent);
Przemyslaw Marczakff0a6352015-09-30 13:14:50 +0200157 if (ns < 0) {
Stephen Warren02464e32015-08-06 15:31:02 -0600158 debug("(bad #size-cells)\n");
159 return FDT_ADDR_T_NONE;
160 }
161
162 debug("na=%d, ns=%d, ", na, ns);
163
164 return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600165 ns, sizep, translate);
Stephen Warren02464e32015-08-06 15:31:02 -0600166}
167
168fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600169 const char *prop_name, int index, fdt_size_t *sizep,
170 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600171{
172 int parent;
173
174 debug("%s: ", __func__);
175
176 parent = fdt_parent_offset(blob, node);
177 if (parent < 0) {
178 debug("(no parent found)\n");
179 return FDT_ADDR_T_NONE;
180 }
181
182 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600183 index, sizep, translate);
Stephen Warren02464e32015-08-06 15:31:02 -0600184}
185
Simon Glass4397a2a2013-03-19 04:58:51 +0000186fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
187 const char *prop_name, fdt_size_t *sizep)
Simon Glassb5220bc2011-10-24 19:15:32 +0000188{
Stephen Warrend93b9a02015-09-25 10:11:41 -0600189 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
190
Stephen Warren02464e32015-08-06 15:31:02 -0600191 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
192 sizeof(fdt_addr_t) / sizeof(fdt32_t),
Stephen Warren6e06acb2016-08-05 09:47:51 -0600193 ns, sizep, false);
Simon Glassb5220bc2011-10-24 19:15:32 +0000194}
195
Simon Glass4397a2a2013-03-19 04:58:51 +0000196fdt_addr_t fdtdec_get_addr(const void *blob, int node,
197 const char *prop_name)
198{
199 return fdtdec_get_addr_size(blob, node, prop_name, NULL);
200}
201
Simon Glassfcc0a872015-11-29 13:17:54 -0700202#if defined(CONFIG_PCI) && defined(CONFIG_DM_PCI)
Bin Menga62e84d2014-12-31 16:05:11 +0800203int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type,
204 const char *prop_name, struct fdt_pci_addr *addr)
205{
206 const u32 *cell;
207 int len;
208 int ret = -ENOENT;
209
210 debug("%s: %s: ", __func__, prop_name);
211
212 /*
213 * If we follow the pci bus bindings strictly, we should check
214 * the value of the node's parent node's #address-cells and
215 * #size-cells. They need to be 3 and 2 accordingly. However,
216 * for simplicity we skip the check here.
217 */
218 cell = fdt_getprop(blob, node, prop_name, &len);
219 if (!cell)
220 goto fail;
221
222 if ((len % FDT_PCI_REG_SIZE) == 0) {
223 int num = len / FDT_PCI_REG_SIZE;
224 int i;
225
226 for (i = 0; i < num; i++) {
227 debug("pci address #%d: %08lx %08lx %08lx\n", i,
Stephen Warren4ea52432015-10-02 17:44:06 -0600228 (ulong)fdt32_to_cpu(cell[0]),
229 (ulong)fdt32_to_cpu(cell[1]),
230 (ulong)fdt32_to_cpu(cell[2]));
231 if ((fdt32_to_cpu(*cell) & type) == type) {
232 addr->phys_hi = fdt32_to_cpu(cell[0]);
233 addr->phys_mid = fdt32_to_cpu(cell[1]);
234 addr->phys_lo = fdt32_to_cpu(cell[1]);
Bin Menga62e84d2014-12-31 16:05:11 +0800235 break;
236 } else {
237 cell += (FDT_PCI_ADDR_CELLS +
238 FDT_PCI_SIZE_CELLS);
239 }
240 }
241
Simon Glass106cce92015-03-05 12:25:19 -0700242 if (i == num) {
243 ret = -ENXIO;
Bin Menga62e84d2014-12-31 16:05:11 +0800244 goto fail;
Simon Glass106cce92015-03-05 12:25:19 -0700245 }
Bin Menga62e84d2014-12-31 16:05:11 +0800246
247 return 0;
248 } else {
249 ret = -EINVAL;
250 }
251
252fail:
253 debug("(not found)\n");
254 return ret;
255}
256
257int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
258{
259 const char *list, *end;
260 int len;
261
262 list = fdt_getprop(blob, node, "compatible", &len);
263 if (!list)
264 return -ENOENT;
265
266 end = list + len;
267 while (list < end) {
268 char *s;
269
270 len = strlen(list);
271 if (len >= strlen("pciVVVV,DDDD")) {
272 s = strstr(list, "pci");
273
274 /*
275 * check if the string is something like pciVVVV,DDDD.RR
276 * or just pciVVVV,DDDD
277 */
278 if (s && s[7] == ',' &&
279 (s[12] == '.' || s[12] == 0)) {
280 s += 3;
281 *vendor = simple_strtol(s, NULL, 16);
282
283 s += 5;
284 *device = simple_strtol(s, NULL, 16);
285
286 return 0;
287 }
Bin Menga62e84d2014-12-31 16:05:11 +0800288 }
Bin Mengbc6351e2015-08-20 06:40:25 -0700289 list += (len + 1);
Bin Menga62e84d2014-12-31 16:05:11 +0800290 }
291
292 return -ENOENT;
293}
294
Simon Glassfcc0a872015-11-29 13:17:54 -0700295int fdtdec_get_pci_bar32(struct udevice *dev, struct fdt_pci_addr *addr,
296 u32 *bar)
Bin Menga62e84d2014-12-31 16:05:11 +0800297{
Bin Menga62e84d2014-12-31 16:05:11 +0800298 int barnum;
Bin Menga62e84d2014-12-31 16:05:11 +0800299
300 /* extract the bar number from fdt_pci_addr */
301 barnum = addr->phys_hi & 0xff;
302 if ((barnum < PCI_BASE_ADDRESS_0) || (barnum > PCI_CARDBUS_CIS))
303 return -EINVAL;
304
305 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
Simon Glassfcc0a872015-11-29 13:17:54 -0700306 *bar = dm_pci_read_bar32(dev, barnum);
Bin Menga62e84d2014-12-31 16:05:11 +0800307
308 return 0;
309}
310#endif
311
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000312uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
313 uint64_t default_val)
314{
315 const uint64_t *cell64;
316 int length;
317
318 cell64 = fdt_getprop(blob, node, prop_name, &length);
319 if (!cell64 || length < sizeof(*cell64))
320 return default_val;
321
322 return fdt64_to_cpu(*cell64);
323}
324
Simon Glassf88fe2d2012-02-27 10:52:34 +0000325int fdtdec_get_is_enabled(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000326{
327 const char *cell;
328
Simon Glassf88fe2d2012-02-27 10:52:34 +0000329 /*
330 * It should say "okay", so only allow that. Some fdts use "ok" but
331 * this is a bug. Please fix your device tree source file. See here
332 * for discussion:
333 *
334 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
335 */
Simon Glassb5220bc2011-10-24 19:15:32 +0000336 cell = fdt_getprop(blob, node, "status", NULL);
337 if (cell)
Simon Glassf88fe2d2012-02-27 10:52:34 +0000338 return 0 == strcmp(cell, "okay");
339 return 1;
Simon Glassb5220bc2011-10-24 19:15:32 +0000340}
341
Gerald Van Baren7cde3972012-11-12 23:13:54 -0500342enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000343{
344 enum fdt_compat_id id;
345
346 /* Search our drivers */
347 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
348 if (0 == fdt_node_check_compatible(blob, node,
349 compat_names[id]))
350 return id;
351 return COMPAT_UNKNOWN;
352}
353
354int fdtdec_next_compatible(const void *blob, int node,
355 enum fdt_compat_id id)
356{
357 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
358}
359
Simon Glass3ddecfc2012-04-02 13:18:42 +0000360int fdtdec_next_compatible_subnode(const void *blob, int node,
361 enum fdt_compat_id id, int *depthp)
362{
363 do {
364 node = fdt_next_node(blob, node, depthp);
365 } while (*depthp > 1);
366
367 /* If this is a direct subnode, and compatible, return it */
368 if (*depthp == 1 && 0 == fdt_node_check_compatible(
369 blob, node, compat_names[id]))
370 return node;
371
372 return -FDT_ERR_NOTFOUND;
373}
374
Simon Glassb5220bc2011-10-24 19:15:32 +0000375int fdtdec_next_alias(const void *blob, const char *name,
376 enum fdt_compat_id id, int *upto)
377{
378#define MAX_STR_LEN 20
379 char str[MAX_STR_LEN + 20];
380 int node, err;
381
382 /* snprintf() is not available */
383 assert(strlen(name) < MAX_STR_LEN);
384 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
Simon Glass00878472012-10-31 14:02:42 +0000385 node = fdt_path_offset(blob, str);
Simon Glassb5220bc2011-10-24 19:15:32 +0000386 if (node < 0)
387 return node;
388 err = fdt_node_check_compatible(blob, node, compat_names[id]);
389 if (err < 0)
390 return err;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000391 if (err)
392 return -FDT_ERR_NOTFOUND;
393 (*upto)++;
394 return node;
Simon Glassb5220bc2011-10-24 19:15:32 +0000395}
396
Simon Glassa53f4a22012-01-17 08:20:50 +0000397int fdtdec_find_aliases_for_id(const void *blob, const char *name,
398 enum fdt_compat_id id, int *node_list, int maxcount)
399{
Simon Glassc6782272012-02-03 15:13:53 +0000400 memset(node_list, '\0', sizeof(*node_list) * maxcount);
401
402 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
403}
404
405/* TODO: Can we tighten this code up a little? */
406int fdtdec_add_aliases_for_id(const void *blob, const char *name,
407 enum fdt_compat_id id, int *node_list, int maxcount)
408{
Simon Glassa53f4a22012-01-17 08:20:50 +0000409 int name_len = strlen(name);
410 int nodes[maxcount];
411 int num_found = 0;
412 int offset, node;
413 int alias_node;
414 int count;
415 int i, j;
416
417 /* find the alias node if present */
418 alias_node = fdt_path_offset(blob, "/aliases");
419
420 /*
421 * start with nothing, and we can assume that the root node can't
422 * match
423 */
424 memset(nodes, '\0', sizeof(nodes));
425
426 /* First find all the compatible nodes */
427 for (node = count = 0; node >= 0 && count < maxcount;) {
428 node = fdtdec_next_compatible(blob, node, id);
429 if (node >= 0)
430 nodes[count++] = node;
431 }
432 if (node >= 0)
433 debug("%s: warning: maxcount exceeded with alias '%s'\n",
434 __func__, name);
435
436 /* Now find all the aliases */
Simon Glassa53f4a22012-01-17 08:20:50 +0000437 for (offset = fdt_first_property_offset(blob, alias_node);
438 offset > 0;
439 offset = fdt_next_property_offset(blob, offset)) {
440 const struct fdt_property *prop;
441 const char *path;
442 int number;
443 int found;
444
445 node = 0;
446 prop = fdt_get_property_by_offset(blob, offset, NULL);
447 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
448 if (prop->len && 0 == strncmp(path, name, name_len))
449 node = fdt_path_offset(blob, prop->data);
450 if (node <= 0)
451 continue;
452
453 /* Get the alias number */
454 number = simple_strtoul(path + name_len, NULL, 10);
455 if (number < 0 || number >= maxcount) {
456 debug("%s: warning: alias '%s' is out of range\n",
457 __func__, path);
458 continue;
459 }
460
461 /* Make sure the node we found is actually in our list! */
462 found = -1;
463 for (j = 0; j < count; j++)
464 if (nodes[j] == node) {
465 found = j;
466 break;
467 }
468
469 if (found == -1) {
470 debug("%s: warning: alias '%s' points to a node "
471 "'%s' that is missing or is not compatible "
472 " with '%s'\n", __func__, path,
473 fdt_get_name(blob, node, NULL),
474 compat_names[id]);
475 continue;
476 }
477
478 /*
479 * Add this node to our list in the right place, and mark
480 * it as done.
481 */
482 if (fdtdec_get_is_enabled(blob, node)) {
Simon Glassc6782272012-02-03 15:13:53 +0000483 if (node_list[number]) {
484 debug("%s: warning: alias '%s' requires that "
485 "a node be placed in the list in a "
486 "position which is already filled by "
487 "node '%s'\n", __func__, path,
488 fdt_get_name(blob, node, NULL));
489 continue;
490 }
Simon Glassa53f4a22012-01-17 08:20:50 +0000491 node_list[number] = node;
492 if (number >= num_found)
493 num_found = number + 1;
494 }
Simon Glassc6782272012-02-03 15:13:53 +0000495 nodes[found] = 0;
Simon Glassa53f4a22012-01-17 08:20:50 +0000496 }
497
498 /* Add any nodes not mentioned by an alias */
499 for (i = j = 0; i < maxcount; i++) {
500 if (!node_list[i]) {
501 for (; j < maxcount; j++)
502 if (nodes[j] &&
503 fdtdec_get_is_enabled(blob, nodes[j]))
504 break;
505
506 /* Have we run out of nodes to add? */
507 if (j == maxcount)
508 break;
509
510 assert(!node_list[i]);
511 node_list[i] = nodes[j++];
512 if (i >= num_found)
513 num_found = i + 1;
514 }
515 }
516
517 return num_found;
518}
519
Simon Glass5c33c9f2014-07-23 06:55:09 -0600520int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
521 int *seqp)
522{
523 int base_len = strlen(base);
524 const char *find_name;
525 int find_namelen;
526 int prop_offset;
527 int aliases;
528
529 find_name = fdt_get_name(blob, offset, &find_namelen);
530 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
531
532 aliases = fdt_path_offset(blob, "/aliases");
533 for (prop_offset = fdt_first_property_offset(blob, aliases);
534 prop_offset > 0;
535 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
536 const char *prop;
537 const char *name;
538 const char *slash;
Simon Glassc4af6732015-06-23 15:39:08 -0600539 int len, val;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600540
541 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
542 debug(" - %s, %s\n", name, prop);
543 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
544 strncmp(name, base, base_len))
545 continue;
546
547 slash = strrchr(prop, '/');
548 if (strcmp(slash + 1, find_name))
549 continue;
Simon Glassc4af6732015-06-23 15:39:08 -0600550 val = trailing_strtol(name);
551 if (val != -1) {
552 *seqp = val;
553 debug("Found seq %d\n", *seqp);
554 return 0;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600555 }
556 }
557
558 debug("Not found\n");
559 return -ENOENT;
560}
561
Simon Glass3bc37a52015-10-17 19:41:14 -0600562const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
563{
564 int chosen_node;
565
566 if (!blob)
567 return NULL;
568 chosen_node = fdt_path_offset(blob, "/chosen");
569 return fdt_getprop(blob, chosen_node, name, NULL);
570}
571
Simon Glassaac07d42014-09-04 16:27:24 -0600572int fdtdec_get_chosen_node(const void *blob, const char *name)
573{
574 const char *prop;
Simon Glassaac07d42014-09-04 16:27:24 -0600575
Simon Glass3bc37a52015-10-17 19:41:14 -0600576 prop = fdtdec_get_chosen_prop(blob, name);
Simon Glassaac07d42014-09-04 16:27:24 -0600577 if (!prop)
578 return -FDT_ERR_NOTFOUND;
579 return fdt_path_offset(blob, prop);
580}
581
Simon Glass9a263e52012-03-28 10:08:24 +0000582int fdtdec_check_fdt(void)
583{
584 /*
585 * We must have an FDT, but we cannot panic() yet since the console
586 * is not ready. So for now, just assert(). Boards which need an early
587 * FDT (prior to console ready) will need to make their own
588 * arrangements and do their own checks.
589 */
590 assert(!fdtdec_prepare_fdt());
591 return 0;
592}
593
Simon Glassb5220bc2011-10-24 19:15:32 +0000594/*
595 * This function is a little odd in that it accesses global data. At some
596 * point if the architecture board.c files merge this will make more sense.
597 * Even now, it is common code.
598 */
Simon Glass9a263e52012-03-28 10:08:24 +0000599int fdtdec_prepare_fdt(void)
Simon Glassb5220bc2011-10-24 19:15:32 +0000600{
Simon Glassc309c2d2013-04-20 08:42:46 +0000601 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
602 fdt_check_header(gd->fdt_blob)) {
Simon Glass66312372015-02-27 22:06:32 -0700603#ifdef CONFIG_SPL_BUILD
604 puts("Missing DTB\n");
605#else
606 puts("No valid device tree binary found - please append one to U-Boot binary, use u-boot-dtb.bin or define CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n");
Simon Glasscb5f97f702015-06-23 15:39:09 -0600607# ifdef DEBUG
608 if (gd->fdt_blob) {
609 printf("fdt_blob=%p\n", gd->fdt_blob);
610 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
611 32, 0);
612 }
613# endif
Simon Glass66312372015-02-27 22:06:32 -0700614#endif
Simon Glass9a263e52012-03-28 10:08:24 +0000615 return -1;
616 }
Simon Glassb5220bc2011-10-24 19:15:32 +0000617 return 0;
618}
Simon Glassd17da652012-02-27 10:52:35 +0000619
620int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
621{
622 const u32 *phandle;
623 int lookup;
624
Simon Glass1cb23232012-07-12 05:25:01 +0000625 debug("%s: %s\n", __func__, prop_name);
Simon Glassd17da652012-02-27 10:52:35 +0000626 phandle = fdt_getprop(blob, node, prop_name, NULL);
627 if (!phandle)
628 return -FDT_ERR_NOTFOUND;
629
630 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
631 return lookup;
632}
633
634/**
635 * Look up a property in a node and check that it has a minimum length.
636 *
637 * @param blob FDT blob
638 * @param node node to examine
639 * @param prop_name name of property to find
640 * @param min_len minimum property length in bytes
641 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
642 found, or -FDT_ERR_BADLAYOUT if not enough data
643 * @return pointer to cell, which is only valid if err == 0
644 */
645static const void *get_prop_check_min_len(const void *blob, int node,
646 const char *prop_name, int min_len, int *err)
647{
648 const void *cell;
649 int len;
650
651 debug("%s: %s\n", __func__, prop_name);
652 cell = fdt_getprop(blob, node, prop_name, &len);
653 if (!cell)
654 *err = -FDT_ERR_NOTFOUND;
655 else if (len < min_len)
656 *err = -FDT_ERR_BADLAYOUT;
657 else
658 *err = 0;
659 return cell;
660}
661
662int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
663 u32 *array, int count)
664{
665 const u32 *cell;
666 int i, err = 0;
667
668 debug("%s: %s\n", __func__, prop_name);
669 cell = get_prop_check_min_len(blob, node, prop_name,
670 sizeof(u32) * count, &err);
671 if (!err) {
672 for (i = 0; i < count; i++)
673 array[i] = fdt32_to_cpu(cell[i]);
674 }
675 return err;
676}
677
Simon Glassa9f04d42014-11-10 18:00:19 -0700678int fdtdec_get_int_array_count(const void *blob, int node,
679 const char *prop_name, u32 *array, int count)
680{
681 const u32 *cell;
682 int len, elems;
683 int i;
684
685 debug("%s: %s\n", __func__, prop_name);
686 cell = fdt_getprop(blob, node, prop_name, &len);
687 if (!cell)
688 return -FDT_ERR_NOTFOUND;
689 elems = len / sizeof(u32);
690 if (count > elems)
691 count = elems;
692 for (i = 0; i < count; i++)
693 array[i] = fdt32_to_cpu(cell[i]);
694
695 return count;
696}
697
Simon Glass96875e72012-04-02 13:18:41 +0000698const u32 *fdtdec_locate_array(const void *blob, int node,
699 const char *prop_name, int count)
700{
701 const u32 *cell;
702 int err;
703
704 cell = get_prop_check_min_len(blob, node, prop_name,
705 sizeof(u32) * count, &err);
706 return err ? NULL : cell;
707}
708
Simon Glassd17da652012-02-27 10:52:35 +0000709int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
710{
711 const s32 *cell;
712 int len;
713
714 debug("%s: %s\n", __func__, prop_name);
715 cell = fdt_getprop(blob, node, prop_name, &len);
716 return cell != NULL;
717}
Simon Glassed3ee5c2012-02-27 10:52:36 +0000718
Simon Glass57068a72015-01-05 20:05:26 -0700719int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
720 const char *list_name,
721 const char *cells_name,
722 int cell_count, int index,
723 struct fdtdec_phandle_args *out_args)
724{
725 const __be32 *list, *list_end;
726 int rc = 0, size, cur_index = 0;
727 uint32_t count = 0;
728 int node = -1;
729 int phandle;
730
731 /* Retrieve the phandle list property */
732 list = fdt_getprop(blob, src_node, list_name, &size);
733 if (!list)
734 return -ENOENT;
735 list_end = list + size / sizeof(*list);
736
737 /* Loop over the phandles until all the requested entry is found */
738 while (list < list_end) {
739 rc = -EINVAL;
740 count = 0;
741
742 /*
743 * If phandle is 0, then it is an empty entry with no
744 * arguments. Skip forward to the next entry.
745 */
746 phandle = be32_to_cpup(list++);
747 if (phandle) {
748 /*
749 * Find the provider node and parse the #*-cells
750 * property to determine the argument length.
751 *
752 * This is not needed if the cell count is hard-coded
753 * (i.e. cells_name not set, but cell_count is set),
754 * except when we're going to return the found node
755 * below.
756 */
757 if (cells_name || cur_index == index) {
758 node = fdt_node_offset_by_phandle(blob,
759 phandle);
760 if (!node) {
761 debug("%s: could not find phandle\n",
762 fdt_get_name(blob, src_node,
763 NULL));
764 goto err;
765 }
766 }
767
768 if (cells_name) {
769 count = fdtdec_get_int(blob, node, cells_name,
770 -1);
771 if (count == -1) {
772 debug("%s: could not get %s for %s\n",
773 fdt_get_name(blob, src_node,
774 NULL),
775 cells_name,
776 fdt_get_name(blob, node,
777 NULL));
778 goto err;
779 }
780 } else {
781 count = cell_count;
782 }
783
784 /*
785 * Make sure that the arguments actually fit in the
786 * remaining property data length
787 */
788 if (list + count > list_end) {
789 debug("%s: arguments longer than property\n",
790 fdt_get_name(blob, src_node, NULL));
791 goto err;
792 }
793 }
794
795 /*
796 * All of the error cases above bail out of the loop, so at
797 * this point, the parsing is successful. If the requested
798 * index matches, then fill the out_args structure and return,
799 * or return -ENOENT for an empty entry.
800 */
801 rc = -ENOENT;
802 if (cur_index == index) {
803 if (!phandle)
804 goto err;
805
806 if (out_args) {
807 int i;
808
809 if (count > MAX_PHANDLE_ARGS) {
810 debug("%s: too many arguments %d\n",
811 fdt_get_name(blob, src_node,
812 NULL), count);
813 count = MAX_PHANDLE_ARGS;
814 }
815 out_args->node = node;
816 out_args->args_count = count;
817 for (i = 0; i < count; i++) {
818 out_args->args[i] =
819 be32_to_cpup(list++);
820 }
821 }
822
823 /* Found it! return success */
824 return 0;
825 }
826
827 node = -1;
828 list += count;
829 cur_index++;
830 }
831
832 /*
833 * Result will be one of:
834 * -ENOENT : index is for empty phandle
835 * -EINVAL : parsing error on data
836 * [1..n] : Number of phandle (count mode; when index = -1)
837 */
838 rc = index < 0 ? cur_index : -ENOENT;
839 err:
840 return rc;
841}
842
Peng Fan1889a7e2016-02-01 13:31:15 +0800843int fdtdec_get_child_count(const void *blob, int node)
844{
845 int subnode;
846 int num = 0;
847
Simon Glassdf87e6b2016-10-02 17:59:29 -0600848 fdt_for_each_subnode(subnode, blob, node)
Peng Fan1889a7e2016-02-01 13:31:15 +0800849 num++;
850
851 return num;
852}
853
Anton Staffbed4d892012-04-17 09:01:28 +0000854int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
855 u8 *array, int count)
856{
857 const u8 *cell;
858 int err;
859
860 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
861 if (!err)
862 memcpy(array, cell, count);
863 return err;
864}
865
866const u8 *fdtdec_locate_byte_array(const void *blob, int node,
867 const char *prop_name, int count)
868{
869 const u8 *cell;
870 int err;
871
872 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
873 if (err)
874 return NULL;
875 return cell;
876}
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000877
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000878int fdtdec_get_config_int(const void *blob, const char *prop_name,
879 int default_val)
880{
881 int config_node;
882
883 debug("%s: %s\n", __func__, prop_name);
884 config_node = fdt_path_offset(blob, "/config");
885 if (config_node < 0)
886 return default_val;
887 return fdtdec_get_int(blob, config_node, prop_name, default_val);
888}
Simon Glass332ab0d2012-10-25 16:30:59 +0000889
Gabe Black79289c02012-10-25 16:31:04 +0000890int fdtdec_get_config_bool(const void *blob, const char *prop_name)
891{
892 int config_node;
893 const void *prop;
894
895 debug("%s: %s\n", __func__, prop_name);
896 config_node = fdt_path_offset(blob, "/config");
897 if (config_node < 0)
898 return 0;
899 prop = fdt_get_property(blob, config_node, prop_name, NULL);
900
901 return prop != NULL;
902}
903
Simon Glass332ab0d2012-10-25 16:30:59 +0000904char *fdtdec_get_config_string(const void *blob, const char *prop_name)
905{
906 const char *nodep;
907 int nodeoffset;
908 int len;
909
910 debug("%s: %s\n", __func__, prop_name);
911 nodeoffset = fdt_path_offset(blob, "/config");
912 if (nodeoffset < 0)
913 return NULL;
914
915 nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
916 if (!nodep)
917 return NULL;
918
919 return (char *)nodep;
920}
Simon Glassf20c4612012-10-25 16:31:00 +0000921
Simon Glass76489832014-10-23 18:58:51 -0600922int fdtdec_decode_region(const void *blob, int node, const char *prop_name,
923 fdt_addr_t *basep, fdt_size_t *sizep)
Simon Glassf20c4612012-10-25 16:31:00 +0000924{
925 const fdt_addr_t *cell;
926 int len;
927
Simon Glass76489832014-10-23 18:58:51 -0600928 debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL),
929 prop_name);
Simon Glassf20c4612012-10-25 16:31:00 +0000930 cell = fdt_getprop(blob, node, prop_name, &len);
Simon Glass76489832014-10-23 18:58:51 -0600931 if (!cell || (len < sizeof(fdt_addr_t) * 2)) {
932 debug("cell=%p, len=%d\n", cell, len);
Simon Glassf20c4612012-10-25 16:31:00 +0000933 return -1;
Simon Glass76489832014-10-23 18:58:51 -0600934 }
Simon Glassf20c4612012-10-25 16:31:00 +0000935
Simon Glass76489832014-10-23 18:58:51 -0600936 *basep = fdt_addr_to_cpu(*cell);
937 *sizep = fdt_size_to_cpu(cell[1]);
938 debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep,
939 (ulong)*sizep);
940
Simon Glassf20c4612012-10-25 16:31:00 +0000941 return 0;
942}
Simon Glass006e73b2014-02-27 13:26:01 -0700943
Simon Glass5f7bfdd2015-03-05 12:25:14 -0700944u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
Thierry Reding56f42242014-08-26 17:33:53 +0200945{
946 u64 number = 0;
947
948 while (cells--)
949 number = (number << 32) | fdt32_to_cpu(*ptr++);
950
951 return number;
952}
953
954int fdt_get_resource(const void *fdt, int node, const char *property,
955 unsigned int index, struct fdt_resource *res)
956{
957 const fdt32_t *ptr, *end;
958 int na, ns, len, parent;
959 unsigned int i = 0;
960
961 parent = fdt_parent_offset(fdt, node);
962 if (parent < 0)
963 return parent;
964
965 na = fdt_address_cells(fdt, parent);
966 ns = fdt_size_cells(fdt, parent);
967
968 ptr = fdt_getprop(fdt, node, property, &len);
969 if (!ptr)
970 return len;
971
972 end = ptr + len / sizeof(*ptr);
973
974 while (ptr + na + ns <= end) {
975 if (i == index) {
976 res->start = res->end = fdtdec_get_number(ptr, na);
977 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
978 return 0;
979 }
980
981 ptr += na + ns;
982 i++;
983 }
984
985 return -FDT_ERR_NOTFOUND;
986}
987
988int fdt_get_named_resource(const void *fdt, int node, const char *property,
989 const char *prop_names, const char *name,
990 struct fdt_resource *res)
991{
992 int index;
993
Simon Glassb02e4042016-10-02 17:59:28 -0600994 index = fdt_stringlist_search(fdt, node, prop_names, name);
Thierry Reding56f42242014-08-26 17:33:53 +0200995 if (index < 0)
996 return index;
997
998 return fdt_get_resource(fdt, node, property, index, res);
999}
Thierry Reding9f85eee2014-08-26 17:33:54 +02001000
Simon Glass26403872014-10-23 18:58:56 -06001001int fdtdec_decode_memory_region(const void *blob, int config_node,
1002 const char *mem_type, const char *suffix,
1003 fdt_addr_t *basep, fdt_size_t *sizep)
1004{
1005 char prop_name[50];
1006 const char *mem;
1007 fdt_size_t size, offset_size;
1008 fdt_addr_t base, offset;
1009 int node;
1010
1011 if (config_node == -1) {
1012 config_node = fdt_path_offset(blob, "/config");
1013 if (config_node < 0) {
1014 debug("%s: Cannot find /config node\n", __func__);
1015 return -ENOENT;
1016 }
1017 }
1018 if (!suffix)
1019 suffix = "";
1020
1021 snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type,
1022 suffix);
1023 mem = fdt_getprop(blob, config_node, prop_name, NULL);
1024 if (!mem) {
1025 debug("%s: No memory type for '%s', using /memory\n", __func__,
1026 prop_name);
1027 mem = "/memory";
1028 }
1029
1030 node = fdt_path_offset(blob, mem);
1031 if (node < 0) {
1032 debug("%s: Failed to find node '%s': %s\n", __func__, mem,
1033 fdt_strerror(node));
1034 return -ENOENT;
1035 }
1036
1037 /*
1038 * Not strictly correct - the memory may have multiple banks. We just
1039 * use the first
1040 */
1041 if (fdtdec_decode_region(blob, node, "reg", &base, &size)) {
1042 debug("%s: Failed to decode memory region %s\n", __func__,
1043 mem);
1044 return -EINVAL;
1045 }
1046
1047 snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type,
1048 suffix);
1049 if (fdtdec_decode_region(blob, config_node, prop_name, &offset,
1050 &offset_size)) {
1051 debug("%s: Failed to decode memory region '%s'\n", __func__,
1052 prop_name);
1053 return -EINVAL;
1054 }
1055
1056 *basep = base + offset;
1057 *sizep = offset_size;
1058
1059 return 0;
1060}
Simon Glassb45122f2015-02-27 22:06:34 -07001061
Simon Glass12e67112015-04-14 21:03:21 -06001062static int decode_timing_property(const void *blob, int node, const char *name,
1063 struct timing_entry *result)
1064{
1065 int length, ret = 0;
1066 const u32 *prop;
1067
1068 prop = fdt_getprop(blob, node, name, &length);
1069 if (!prop) {
1070 debug("%s: could not find property %s\n",
1071 fdt_get_name(blob, node, NULL), name);
1072 return length;
1073 }
1074
1075 if (length == sizeof(u32)) {
1076 result->typ = fdtdec_get_int(blob, node, name, 0);
1077 result->min = result->typ;
1078 result->max = result->typ;
1079 } else {
1080 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
1081 }
1082
1083 return ret;
1084}
1085
1086int fdtdec_decode_display_timing(const void *blob, int parent, int index,
1087 struct display_timing *dt)
1088{
1089 int i, node, timings_node;
1090 u32 val = 0;
1091 int ret = 0;
1092
1093 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
1094 if (timings_node < 0)
1095 return timings_node;
1096
1097 for (i = 0, node = fdt_first_subnode(blob, timings_node);
1098 node > 0 && i != index;
1099 node = fdt_next_subnode(blob, node))
1100 i++;
1101
1102 if (node < 0)
1103 return node;
1104
1105 memset(dt, 0, sizeof(*dt));
1106
1107 ret |= decode_timing_property(blob, node, "hback-porch",
1108 &dt->hback_porch);
1109 ret |= decode_timing_property(blob, node, "hfront-porch",
1110 &dt->hfront_porch);
1111 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
1112 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
1113 ret |= decode_timing_property(blob, node, "vback-porch",
1114 &dt->vback_porch);
1115 ret |= decode_timing_property(blob, node, "vfront-porch",
1116 &dt->vfront_porch);
1117 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
1118 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
1119 ret |= decode_timing_property(blob, node, "clock-frequency",
1120 &dt->pixelclock);
1121
1122 dt->flags = 0;
1123 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1124 if (val != -1) {
1125 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1126 DISPLAY_FLAGS_VSYNC_LOW;
1127 }
1128 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1129 if (val != -1) {
1130 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1131 DISPLAY_FLAGS_HSYNC_LOW;
1132 }
1133 val = fdtdec_get_int(blob, node, "de-active", -1);
1134 if (val != -1) {
1135 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1136 DISPLAY_FLAGS_DE_LOW;
1137 }
1138 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1139 if (val != -1) {
1140 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1141 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1142 }
1143
1144 if (fdtdec_get_bool(blob, node, "interlaced"))
1145 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1146 if (fdtdec_get_bool(blob, node, "doublescan"))
1147 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1148 if (fdtdec_get_bool(blob, node, "doubleclk"))
1149 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1150
Simon Glass04b9dd12016-05-05 07:28:21 -06001151 return ret;
Simon Glass12e67112015-04-14 21:03:21 -06001152}
1153
Nathan Rossi623f6012016-12-19 00:03:34 +10001154int fdtdec_setup_memory_size(void)
1155{
1156 int ret, mem;
1157 struct fdt_resource res;
1158
1159 mem = fdt_path_offset(gd->fdt_blob, "/memory");
1160 if (mem < 0) {
1161 debug("%s: Missing /memory node\n", __func__);
1162 return -EINVAL;
1163 }
1164
1165 ret = fdt_get_resource(gd->fdt_blob, mem, "reg", 0, &res);
1166 if (ret != 0) {
1167 debug("%s: Unable to decode first memory bank\n", __func__);
1168 return -EINVAL;
1169 }
1170
1171 gd->ram_size = (phys_size_t)(res.end - res.start + 1);
Simon Glassc69380f2017-05-27 07:38:13 -06001172 debug("%s: Initial DRAM size %llx\n", __func__,
1173 (unsigned long long)gd->ram_size);
Nathan Rossi623f6012016-12-19 00:03:34 +10001174
1175 return 0;
1176}
1177
1178#if defined(CONFIG_NR_DRAM_BANKS)
1179int fdtdec_setup_memory_banksize(void)
1180{
1181 int bank, ret, mem;
1182 struct fdt_resource res;
1183
1184 mem = fdt_path_offset(gd->fdt_blob, "/memory");
1185 if (mem < 0) {
1186 debug("%s: Missing /memory node\n", __func__);
1187 return -EINVAL;
1188 }
1189
1190 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
1191 ret = fdt_get_resource(gd->fdt_blob, mem, "reg", bank, &res);
1192 if (ret == -FDT_ERR_NOTFOUND)
1193 break;
1194 if (ret != 0)
1195 return -EINVAL;
1196
1197 gd->bd->bi_dram[bank].start = (phys_addr_t)res.start;
1198 gd->bd->bi_dram[bank].size =
1199 (phys_size_t)(res.end - res.start + 1);
1200
1201 debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
1202 __func__, bank,
1203 (unsigned long long)gd->bd->bi_dram[bank].start,
1204 (unsigned long long)gd->bd->bi_dram[bank].size);
1205 }
1206
1207 return 0;
1208}
1209#endif
1210
Simon Glass08793612015-02-27 22:06:35 -07001211int fdtdec_setup(void)
Simon Glassb45122f2015-02-27 22:06:34 -07001212{
Masahiro Yamada0f925822015-08-12 07:31:55 +09001213#if CONFIG_IS_ENABLED(OF_CONTROL)
Simon Glassb45122f2015-02-27 22:06:34 -07001214# ifdef CONFIG_OF_EMBED
1215 /* Get a pointer to the FDT */
1216 gd->fdt_blob = __dtb_dt_begin;
1217# elif defined CONFIG_OF_SEPARATE
1218# ifdef CONFIG_SPL_BUILD
Simon Glass10172962015-10-17 19:41:19 -06001219 /* FDT is at end of BSS unless it is in a different memory region */
1220 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
1221 gd->fdt_blob = (ulong *)&_image_binary_end;
1222 else
1223 gd->fdt_blob = (ulong *)&__bss_end;
Simon Glassb45122f2015-02-27 22:06:34 -07001224# else
1225 /* FDT is at end of image */
1226 gd->fdt_blob = (ulong *)&_end;
Masahiro Yamada3bd926c2015-08-01 16:03:25 +09001227# endif
Alex Deymo82f766d2017-04-02 01:25:20 -07001228# elif defined(CONFIG_OF_BOARD)
1229 /* Allow the board to override the fdt address. */
1230 gd->fdt_blob = board_fdt_blob_setup();
Simon Glassb45122f2015-02-27 22:06:34 -07001231# elif defined(CONFIG_OF_HOSTFILE)
1232 if (sandbox_read_fdt_from_file()) {
1233 puts("Failed to read control FDT\n");
1234 return -1;
1235 }
1236# endif
1237# ifndef CONFIG_SPL_BUILD
1238 /* Allow the early environment to override the fdt address */
1239 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
1240 (uintptr_t)gd->fdt_blob);
1241# endif
1242#endif
Simon Glass08793612015-02-27 22:06:35 -07001243 return fdtdec_prepare_fdt();
Simon Glassb45122f2015-02-27 22:06:34 -07001244}
1245
1246#endif /* !USE_HOSTCC */