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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>
Jean-Jacques Hiblot035d6402017-09-15 12:57:31 +02008#include <boot_fit.h>
Simon Glassfcc0a872015-11-29 13:17:54 -07009#include <dm.h>
Simon Glassb7e0d732017-05-18 20:09:02 -060010#include <dm/of_extra.h>
Jean-Jacques Hiblot035d6402017-09-15 12:57:31 +020011#include <errno.h>
12#include <fdtdec.h>
13#include <fdt_support.h>
Masahiro Yamadab08c8c42018-03-05 01:20:11 +090014#include <linux/libfdt.h>
Jean-Jacques Hiblot035d6402017-09-15 12:57:31 +020015#include <serial.h>
16#include <asm/sections.h>
Simon Glass5c33c9f2014-07-23 06:55:09 -060017#include <linux/ctype.h>
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +020018#include <linux/lzo.h>
Simon Glassb5220bc2011-10-24 19:15:32 +000019
20DECLARE_GLOBAL_DATA_PTR;
21
22/*
23 * Here are the type we know about. One day we might allow drivers to
24 * register. For now we just put them here. The COMPAT macro allows us to
25 * turn this into a sparse list later, and keeps the ID with the name.
Simon Glass01a227d2016-06-19 17:33:13 -060026 *
27 * NOTE: This list is basically a TODO list for things that need to be
28 * converted to driver model. So don't add new things here unless there is a
29 * good reason why driver-model conversion is infeasible. Examples include
30 * things which are used before driver model is available.
Simon Glassb5220bc2011-10-24 19:15:32 +000031 */
32#define COMPAT(id, name) name
33static const char * const compat_names[COMPAT_COUNT] = {
Simon Glassf88fe2d2012-02-27 10:52:34 +000034 COMPAT(UNKNOWN, "<none>"),
Jimmy Zhang0e35ad02012-04-02 13:18:52 +000035 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
36 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
Jim Lin312693c2012-07-29 20:53:29 +000037 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
Thierry Reding79c7a902014-12-09 22:25:09 -070038 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070039 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
Hatim RVcc9fe332012-12-11 00:52:46 +000040 COMPAT(SMSC_LAN9215, "smsc,lan9215"),
41 COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
Rajeshwari Shindec34253d2012-12-26 20:03:10 +000042 COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"),
Rajeshwari Shinde72dbff12012-12-26 20:03:16 +000043 COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"),
44 COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"),
Rajeshwari Shinde6abd1622013-01-07 23:35:05 +000045 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
Vivek Gautam108b85b2013-09-14 14:02:48 +053046 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
Akshay Saraswat618766c2013-02-25 01:13:01 +000047 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
Piotr Wilczekde461c52014-03-07 14:59:39 +010048 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
Jaehoon Chung7d3ca0f2014-05-16 13:59:51 +090049 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
Piotr Wilczek3577fe82014-03-07 14:59:41 +010050 COMPAT(SAMSUNG_EXYNOS_MMC, "samsung,exynos-mmc"),
Przemyslaw Marczakf37df0f2015-04-20 20:07:45 +020051 COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686"),
Simon Glassbb8215f2013-03-11 06:08:08 +000052 COMPAT(GENERIC_SPI_FLASH, "spi-flash"),
Rajeshwari Shinde7772bb72013-02-14 19:46:15 +000053 COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"),
naveen krishna chatradhiecbd7e12013-04-29 15:58:52 -070054 COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"),
Ajay Kumar45c480c2014-09-05 16:53:33 +053055 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
Simon Glass77f9b1f2014-11-12 22:42:21 -070056 COMPAT(INTEL_MICROCODE, "intel,microcode"),
Thierry Reding6173c452014-12-09 22:25:05 -070057 COMPAT(AMS_AS3722, "ams,as3722"),
Bin Mengc89ada02015-02-05 23:42:26 +080058 COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
Marek Vasut6ab00db2015-07-25 19:33:56 +020059 COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
Marek Vasut129adf52015-07-25 10:48:14 +020060 COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"),
Marek Vasutef4b01b2015-12-05 19:28:44 +010061 COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"),
Simon Glass39ea0ee2016-06-19 17:33:14 -060062 COMPAT(INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"),
63 COMPAT(INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"),
64 COMPAT(INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"),
Boris Brezillon4ccae812016-06-15 21:09:23 +020065 COMPAT(COMPAT_SUNXI_NAND, "allwinner,sun4i-a10-nand"),
Ley Foon Tane11b5e82017-04-05 17:32:47 +080066 COMPAT(ALTERA_SOCFPGA_CLK, "altr,clk-mgr"),
67 COMPAT(ALTERA_SOCFPGA_PINCTRL_SINGLE, "pinctrl-single"),
68 COMPAT(ALTERA_SOCFPGA_H2F_BRG, "altr,socfpga-hps2fpga-bridge"),
69 COMPAT(ALTERA_SOCFPGA_LWH2F_BRG, "altr,socfpga-lwhps2fpga-bridge"),
70 COMPAT(ALTERA_SOCFPGA_F2H_BRG, "altr,socfpga-fpga2hps-bridge"),
71 COMPAT(ALTERA_SOCFPGA_F2SDR0, "altr,socfpga-fpga2sdram0-bridge"),
72 COMPAT(ALTERA_SOCFPGA_F2SDR1, "altr,socfpga-fpga2sdram1-bridge"),
73 COMPAT(ALTERA_SOCFPGA_F2SDR2, "altr,socfpga-fpga2sdram2-bridge"),
Tien Fong Cheeeb57c0b2017-09-25 16:40:03 +080074 COMPAT(ALTERA_SOCFPGA_FPGA0, "altr,socfpga-a10-fpga-mgr"),
75 COMPAT(ALTERA_SOCFPGA_NOC, "altr,socfpga-a10-noc"),
Simon Glassb5220bc2011-10-24 19:15:32 +000076};
77
Simon Glassa53f4a22012-01-17 08:20:50 +000078const 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
Stephen Warren02464e32015-08-06 15:31:02 -060085fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +010086 const char *prop_name, int index, int na,
87 int ns, fdt_size_t *sizep,
88 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -060089{
90 const fdt32_t *prop, *prop_end;
91 const fdt32_t *prop_addr, *prop_size, *prop_after_size;
92 int len;
93 fdt_addr_t addr;
94
95 debug("%s: %s: ", __func__, prop_name);
96
97 if (na > (sizeof(fdt_addr_t) / sizeof(fdt32_t))) {
98 debug("(na too large for fdt_addr_t type)\n");
99 return FDT_ADDR_T_NONE;
100 }
101
102 if (ns > (sizeof(fdt_size_t) / sizeof(fdt32_t))) {
103 debug("(ns too large for fdt_size_t type)\n");
104 return FDT_ADDR_T_NONE;
105 }
106
107 prop = fdt_getprop(blob, node, prop_name, &len);
108 if (!prop) {
109 debug("(not found)\n");
110 return FDT_ADDR_T_NONE;
111 }
112 prop_end = prop + (len / sizeof(*prop));
113
114 prop_addr = prop + (index * (na + ns));
115 prop_size = prop_addr + na;
116 prop_after_size = prop_size + ns;
117 if (prop_after_size > prop_end) {
118 debug("(not enough data: expected >= %d cells, got %d cells)\n",
119 (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
120 return FDT_ADDR_T_NONE;
121 }
122
Vignesh R5efa1bf2017-03-20 10:04:38 +0530123#if CONFIG_IS_ENABLED(OF_TRANSLATE)
Stephen Warren6e06acb2016-08-05 09:47:51 -0600124 if (translate)
125 addr = fdt_translate_address(blob, node, prop_addr);
126 else
127#endif
128 addr = fdtdec_get_number(prop_addr, na);
Stephen Warren02464e32015-08-06 15:31:02 -0600129
130 if (sizep) {
131 *sizep = fdtdec_get_number(prop_size, ns);
Simon Glassfd30d2c2016-02-29 15:25:37 -0700132 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
133 (unsigned long long)*sizep);
Stephen Warren02464e32015-08-06 15:31:02 -0600134 } else {
Simon Glassfd30d2c2016-02-29 15:25:37 -0700135 debug("addr=%08llx\n", (unsigned long long)addr);
Stephen Warren02464e32015-08-06 15:31:02 -0600136 }
137
138 return addr;
139}
140
141fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
Mario Six2e386622018-01-15 11:07:35 +0100142 int node, const char *prop_name,
143 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,
Mario Six2e386622018-01-15 11:07:35 +0100169 const char *prop_name, int index,
170 fdt_size_t *sizep,
171 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600172{
173 int parent;
174
175 debug("%s: ", __func__);
176
177 parent = fdt_parent_offset(blob, node);
178 if (parent < 0) {
179 debug("(no parent found)\n");
180 return FDT_ADDR_T_NONE;
181 }
182
183 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600184 index, sizep, translate);
Stephen Warren02464e32015-08-06 15:31:02 -0600185}
186
Simon Glass4397a2a2013-03-19 04:58:51 +0000187fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100188 const char *prop_name, fdt_size_t *sizep)
Simon Glassb5220bc2011-10-24 19:15:32 +0000189{
Stephen Warrend93b9a02015-09-25 10:11:41 -0600190 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
191
Stephen Warren02464e32015-08-06 15:31:02 -0600192 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
193 sizeof(fdt_addr_t) / sizeof(fdt32_t),
Stephen Warren6e06acb2016-08-05 09:47:51 -0600194 ns, sizep, false);
Simon Glassb5220bc2011-10-24 19:15:32 +0000195}
196
Mario Six2e386622018-01-15 11:07:35 +0100197fdt_addr_t fdtdec_get_addr(const void *blob, int node, const char *prop_name)
Simon Glass4397a2a2013-03-19 04:58:51 +0000198{
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,
Mario Six2e386622018-01-15 11:07:35 +0100204 const char *prop_name, struct fdt_pci_addr *addr)
Bin Menga62e84d2014-12-31 16:05:11 +0800205{
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;
Bin Menga62e84d2014-12-31 16:05:11 +0800236 }
Mario Sixb79221a2018-01-15 11:07:36 +0100237
238 cell += (FDT_PCI_ADDR_CELLS +
239 FDT_PCI_SIZE_CELLS);
Bin Menga62e84d2014-12-31 16:05:11 +0800240 }
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;
Bin Menga62e84d2014-12-31 16:05:11 +0800248 }
249
Mario Sixb79221a2018-01-15 11:07:36 +0100250 ret = -EINVAL;
251
Bin Menga62e84d2014-12-31 16:05:11 +0800252fail:
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) {
Bin Menga62e84d2014-12-31 16:05:11 +0800268 len = strlen(list);
269 if (len >= strlen("pciVVVV,DDDD")) {
Mario Sixb79221a2018-01-15 11:07:36 +0100270 char *s = strstr(list, "pci");
Bin Menga62e84d2014-12-31 16:05:11 +0800271
272 /*
273 * check if the string is something like pciVVVV,DDDD.RR
274 * or just pciVVVV,DDDD
275 */
276 if (s && s[7] == ',' &&
277 (s[12] == '.' || s[12] == 0)) {
278 s += 3;
279 *vendor = simple_strtol(s, NULL, 16);
280
281 s += 5;
282 *device = simple_strtol(s, NULL, 16);
283
284 return 0;
285 }
Bin Menga62e84d2014-12-31 16:05:11 +0800286 }
Bin Mengbc6351e2015-08-20 06:40:25 -0700287 list += (len + 1);
Bin Menga62e84d2014-12-31 16:05:11 +0800288 }
289
290 return -ENOENT;
291}
292
Simon Glassfcc0a872015-11-29 13:17:54 -0700293int fdtdec_get_pci_bar32(struct udevice *dev, struct fdt_pci_addr *addr,
294 u32 *bar)
Bin Menga62e84d2014-12-31 16:05:11 +0800295{
Bin Menga62e84d2014-12-31 16:05:11 +0800296 int barnum;
Bin Menga62e84d2014-12-31 16:05:11 +0800297
298 /* extract the bar number from fdt_pci_addr */
299 barnum = addr->phys_hi & 0xff;
Mario Sixb79221a2018-01-15 11:07:36 +0100300 if (barnum < PCI_BASE_ADDRESS_0 || barnum > PCI_CARDBUS_CIS)
Bin Menga62e84d2014-12-31 16:05:11 +0800301 return -EINVAL;
302
303 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
Simon Glassfcc0a872015-11-29 13:17:54 -0700304 *bar = dm_pci_read_bar32(dev, barnum);
Bin Menga62e84d2014-12-31 16:05:11 +0800305
306 return 0;
307}
308#endif
309
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000310uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100311 uint64_t default_val)
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000312{
313 const uint64_t *cell64;
314 int length;
315
316 cell64 = fdt_getprop(blob, node, prop_name, &length);
317 if (!cell64 || length < sizeof(*cell64))
318 return default_val;
319
320 return fdt64_to_cpu(*cell64);
321}
322
Simon Glassf88fe2d2012-02-27 10:52:34 +0000323int fdtdec_get_is_enabled(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000324{
325 const char *cell;
326
Simon Glassf88fe2d2012-02-27 10:52:34 +0000327 /*
328 * It should say "okay", so only allow that. Some fdts use "ok" but
329 * this is a bug. Please fix your device tree source file. See here
330 * for discussion:
331 *
332 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
333 */
Simon Glassb5220bc2011-10-24 19:15:32 +0000334 cell = fdt_getprop(blob, node, "status", NULL);
335 if (cell)
Mario Sixb79221a2018-01-15 11:07:36 +0100336 return strcmp(cell, "okay") == 0;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000337 return 1;
Simon Glassb5220bc2011-10-24 19:15:32 +0000338}
339
Gerald Van Baren7cde3972012-11-12 23:13:54 -0500340enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000341{
342 enum fdt_compat_id id;
343
344 /* Search our drivers */
345 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
Mario Sixb79221a2018-01-15 11:07:36 +0100346 if (fdt_node_check_compatible(blob, node,
347 compat_names[id]) == 0)
Simon Glassb5220bc2011-10-24 19:15:32 +0000348 return id;
349 return COMPAT_UNKNOWN;
350}
351
Mario Six2e386622018-01-15 11:07:35 +0100352int fdtdec_next_compatible(const void *blob, int node, enum fdt_compat_id id)
Simon Glassb5220bc2011-10-24 19:15:32 +0000353{
354 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
355}
356
Simon Glass3ddecfc2012-04-02 13:18:42 +0000357int fdtdec_next_compatible_subnode(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100358 enum fdt_compat_id id, int *depthp)
Simon Glass3ddecfc2012-04-02 13:18:42 +0000359{
360 do {
361 node = fdt_next_node(blob, node, depthp);
362 } while (*depthp > 1);
363
364 /* If this is a direct subnode, and compatible, return it */
365 if (*depthp == 1 && 0 == fdt_node_check_compatible(
366 blob, node, compat_names[id]))
367 return node;
368
369 return -FDT_ERR_NOTFOUND;
370}
371
Mario Six2e386622018-01-15 11:07:35 +0100372int fdtdec_next_alias(const void *blob, const char *name, enum fdt_compat_id id,
373 int *upto)
Simon Glassb5220bc2011-10-24 19:15:32 +0000374{
375#define MAX_STR_LEN 20
376 char str[MAX_STR_LEN + 20];
377 int node, err;
378
379 /* snprintf() is not available */
380 assert(strlen(name) < MAX_STR_LEN);
381 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
Simon Glass00878472012-10-31 14:02:42 +0000382 node = fdt_path_offset(blob, str);
Simon Glassb5220bc2011-10-24 19:15:32 +0000383 if (node < 0)
384 return node;
385 err = fdt_node_check_compatible(blob, node, compat_names[id]);
386 if (err < 0)
387 return err;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000388 if (err)
389 return -FDT_ERR_NOTFOUND;
390 (*upto)++;
391 return node;
Simon Glassb5220bc2011-10-24 19:15:32 +0000392}
393
Simon Glassa53f4a22012-01-17 08:20:50 +0000394int fdtdec_find_aliases_for_id(const void *blob, const char *name,
Mario Six2e386622018-01-15 11:07:35 +0100395 enum fdt_compat_id id, int *node_list,
396 int maxcount)
Simon Glassa53f4a22012-01-17 08:20:50 +0000397{
Simon Glassc6782272012-02-03 15:13:53 +0000398 memset(node_list, '\0', sizeof(*node_list) * maxcount);
399
400 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
401}
402
403/* TODO: Can we tighten this code up a little? */
404int fdtdec_add_aliases_for_id(const void *blob, const char *name,
Mario Six2e386622018-01-15 11:07:35 +0100405 enum fdt_compat_id id, int *node_list,
406 int maxcount)
Simon Glassc6782272012-02-03 15:13:53 +0000407{
Simon Glassa53f4a22012-01-17 08:20:50 +0000408 int name_len = strlen(name);
409 int nodes[maxcount];
410 int num_found = 0;
411 int offset, node;
412 int alias_node;
413 int count;
414 int i, j;
415
416 /* find the alias node if present */
417 alias_node = fdt_path_offset(blob, "/aliases");
418
419 /*
420 * start with nothing, and we can assume that the root node can't
421 * match
422 */
423 memset(nodes, '\0', sizeof(nodes));
424
425 /* First find all the compatible nodes */
426 for (node = count = 0; node >= 0 && count < maxcount;) {
427 node = fdtdec_next_compatible(blob, node, id);
428 if (node >= 0)
429 nodes[count++] = node;
430 }
431 if (node >= 0)
432 debug("%s: warning: maxcount exceeded with alias '%s'\n",
Mario Six2e386622018-01-15 11:07:35 +0100433 __func__, name);
Simon Glassa53f4a22012-01-17 08:20:50 +0000434
435 /* Now find all the aliases */
Simon Glassa53f4a22012-01-17 08:20:50 +0000436 for (offset = fdt_first_property_offset(blob, alias_node);
437 offset > 0;
438 offset = fdt_next_property_offset(blob, offset)) {
439 const struct fdt_property *prop;
440 const char *path;
441 int number;
442 int found;
443
444 node = 0;
445 prop = fdt_get_property_by_offset(blob, offset, NULL);
446 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
447 if (prop->len && 0 == strncmp(path, name, name_len))
448 node = fdt_path_offset(blob, prop->data);
449 if (node <= 0)
450 continue;
451
452 /* Get the alias number */
453 number = simple_strtoul(path + name_len, NULL, 10);
454 if (number < 0 || number >= maxcount) {
455 debug("%s: warning: alias '%s' is out of range\n",
Mario Six2e386622018-01-15 11:07:35 +0100456 __func__, path);
Simon Glassa53f4a22012-01-17 08:20:50 +0000457 continue;
458 }
459
460 /* Make sure the node we found is actually in our list! */
461 found = -1;
462 for (j = 0; j < count; j++)
463 if (nodes[j] == node) {
464 found = j;
465 break;
466 }
467
468 if (found == -1) {
469 debug("%s: warning: alias '%s' points to a node "
470 "'%s' that is missing or is not compatible "
471 " with '%s'\n", __func__, path,
472 fdt_get_name(blob, node, NULL),
473 compat_names[id]);
474 continue;
475 }
476
477 /*
478 * Add this node to our list in the right place, and mark
479 * it as done.
480 */
481 if (fdtdec_get_is_enabled(blob, node)) {
Simon Glassc6782272012-02-03 15:13:53 +0000482 if (node_list[number]) {
483 debug("%s: warning: alias '%s' requires that "
484 "a node be placed in the list in a "
485 "position which is already filled by "
486 "node '%s'\n", __func__, path,
487 fdt_get_name(blob, node, NULL));
488 continue;
489 }
Simon Glassa53f4a22012-01-17 08:20:50 +0000490 node_list[number] = node;
491 if (number >= num_found)
492 num_found = number + 1;
493 }
Simon Glassc6782272012-02-03 15:13:53 +0000494 nodes[found] = 0;
Simon Glassa53f4a22012-01-17 08:20:50 +0000495 }
496
497 /* Add any nodes not mentioned by an alias */
498 for (i = j = 0; i < maxcount; i++) {
499 if (!node_list[i]) {
500 for (; j < maxcount; j++)
501 if (nodes[j] &&
Mario Six2e386622018-01-15 11:07:35 +0100502 fdtdec_get_is_enabled(blob, nodes[j]))
Simon Glassa53f4a22012-01-17 08:20:50 +0000503 break;
504
505 /* Have we run out of nodes to add? */
506 if (j == maxcount)
507 break;
508
509 assert(!node_list[i]);
510 node_list[i] = nodes[j++];
511 if (i >= num_found)
512 num_found = i + 1;
513 }
514 }
515
516 return num_found;
517}
518
Simon Glass5c33c9f2014-07-23 06:55:09 -0600519int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
520 int *seqp)
521{
522 int base_len = strlen(base);
523 const char *find_name;
524 int find_namelen;
525 int prop_offset;
526 int aliases;
527
528 find_name = fdt_get_name(blob, offset, &find_namelen);
529 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
530
531 aliases = fdt_path_offset(blob, "/aliases");
532 for (prop_offset = fdt_first_property_offset(blob, aliases);
533 prop_offset > 0;
534 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
535 const char *prop;
536 const char *name;
537 const char *slash;
Simon Glassc4af6732015-06-23 15:39:08 -0600538 int len, val;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600539
540 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
541 debug(" - %s, %s\n", name, prop);
542 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
543 strncmp(name, base, base_len))
544 continue;
545
546 slash = strrchr(prop, '/');
547 if (strcmp(slash + 1, find_name))
548 continue;
Simon Glassc4af6732015-06-23 15:39:08 -0600549 val = trailing_strtol(name);
550 if (val != -1) {
551 *seqp = val;
552 debug("Found seq %d\n", *seqp);
553 return 0;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600554 }
555 }
556
557 debug("Not found\n");
558 return -ENOENT;
559}
560
Simon Glass3bc37a52015-10-17 19:41:14 -0600561const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
562{
563 int chosen_node;
564
565 if (!blob)
566 return NULL;
567 chosen_node = fdt_path_offset(blob, "/chosen");
568 return fdt_getprop(blob, chosen_node, name, NULL);
569}
570
Simon Glassaac07d42014-09-04 16:27:24 -0600571int fdtdec_get_chosen_node(const void *blob, const char *name)
572{
573 const char *prop;
Simon Glassaac07d42014-09-04 16:27:24 -0600574
Simon Glass3bc37a52015-10-17 19:41:14 -0600575 prop = fdtdec_get_chosen_prop(blob, name);
Simon Glassaac07d42014-09-04 16:27:24 -0600576 if (!prop)
577 return -FDT_ERR_NOTFOUND;
578 return fdt_path_offset(blob, prop);
579}
580
Simon Glass9a263e52012-03-28 10:08:24 +0000581int fdtdec_check_fdt(void)
582{
583 /*
584 * We must have an FDT, but we cannot panic() yet since the console
585 * is not ready. So for now, just assert(). Boards which need an early
586 * FDT (prior to console ready) will need to make their own
587 * arrangements and do their own checks.
588 */
589 assert(!fdtdec_prepare_fdt());
590 return 0;
591}
592
Simon Glassb5220bc2011-10-24 19:15:32 +0000593/*
594 * This function is a little odd in that it accesses global data. At some
595 * point if the architecture board.c files merge this will make more sense.
596 * Even now, it is common code.
597 */
Simon Glass9a263e52012-03-28 10:08:24 +0000598int fdtdec_prepare_fdt(void)
Simon Glassb5220bc2011-10-24 19:15:32 +0000599{
Simon Glassc309c2d2013-04-20 08:42:46 +0000600 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
601 fdt_check_header(gd->fdt_blob)) {
Simon Glass66312372015-02-27 22:06:32 -0700602#ifdef CONFIG_SPL_BUILD
603 puts("Missing DTB\n");
604#else
605 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 -0600606# ifdef DEBUG
607 if (gd->fdt_blob) {
608 printf("fdt_blob=%p\n", gd->fdt_blob);
609 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
610 32, 0);
611 }
612# endif
Simon Glass66312372015-02-27 22:06:32 -0700613#endif
Simon Glass9a263e52012-03-28 10:08:24 +0000614 return -1;
615 }
Simon Glassb5220bc2011-10-24 19:15:32 +0000616 return 0;
617}
Simon Glassd17da652012-02-27 10:52:35 +0000618
619int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
620{
621 const u32 *phandle;
622 int lookup;
623
Simon Glass1cb23232012-07-12 05:25:01 +0000624 debug("%s: %s\n", __func__, prop_name);
Simon Glassd17da652012-02-27 10:52:35 +0000625 phandle = fdt_getprop(blob, node, prop_name, NULL);
626 if (!phandle)
627 return -FDT_ERR_NOTFOUND;
628
629 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
630 return lookup;
631}
632
633/**
634 * Look up a property in a node and check that it has a minimum length.
635 *
636 * @param blob FDT blob
637 * @param node node to examine
638 * @param prop_name name of property to find
639 * @param min_len minimum property length in bytes
640 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
641 found, or -FDT_ERR_BADLAYOUT if not enough data
642 * @return pointer to cell, which is only valid if err == 0
643 */
644static const void *get_prop_check_min_len(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100645 const char *prop_name, int min_len,
646 int *err)
Simon Glassd17da652012-02-27 10:52:35 +0000647{
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,
Mario Six2e386622018-01-15 11:07:35 +0100663 u32 *array, int count)
Simon Glassd17da652012-02-27 10:52:35 +0000664{
665 const u32 *cell;
Mario Sixb79221a2018-01-15 11:07:36 +0100666 int err = 0;
Simon Glassd17da652012-02-27 10:52:35 +0000667
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) {
Mario Sixb79221a2018-01-15 11:07:36 +0100672 int i;
673
Simon Glassd17da652012-02-27 10:52:35 +0000674 for (i = 0; i < count; i++)
675 array[i] = fdt32_to_cpu(cell[i]);
676 }
677 return err;
678}
679
Simon Glassa9f04d42014-11-10 18:00:19 -0700680int fdtdec_get_int_array_count(const void *blob, int node,
681 const char *prop_name, u32 *array, int count)
682{
683 const u32 *cell;
684 int len, elems;
685 int i;
686
687 debug("%s: %s\n", __func__, prop_name);
688 cell = fdt_getprop(blob, node, prop_name, &len);
689 if (!cell)
690 return -FDT_ERR_NOTFOUND;
691 elems = len / sizeof(u32);
692 if (count > elems)
693 count = elems;
694 for (i = 0; i < count; i++)
695 array[i] = fdt32_to_cpu(cell[i]);
696
697 return count;
698}
699
Simon Glass96875e72012-04-02 13:18:41 +0000700const u32 *fdtdec_locate_array(const void *blob, int node,
701 const char *prop_name, int count)
702{
703 const u32 *cell;
704 int err;
705
706 cell = get_prop_check_min_len(blob, node, prop_name,
707 sizeof(u32) * count, &err);
708 return err ? NULL : cell;
709}
710
Simon Glassd17da652012-02-27 10:52:35 +0000711int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
712{
713 const s32 *cell;
714 int len;
715
716 debug("%s: %s\n", __func__, prop_name);
717 cell = fdt_getprop(blob, node, prop_name, &len);
718 return cell != NULL;
719}
Simon Glassed3ee5c2012-02-27 10:52:36 +0000720
Simon Glass57068a72015-01-05 20:05:26 -0700721int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
722 const char *list_name,
723 const char *cells_name,
724 int cell_count, int index,
725 struct fdtdec_phandle_args *out_args)
726{
727 const __be32 *list, *list_end;
728 int rc = 0, size, cur_index = 0;
729 uint32_t count = 0;
730 int node = -1;
731 int phandle;
732
733 /* Retrieve the phandle list property */
734 list = fdt_getprop(blob, src_node, list_name, &size);
735 if (!list)
736 return -ENOENT;
737 list_end = list + size / sizeof(*list);
738
739 /* Loop over the phandles until all the requested entry is found */
740 while (list < list_end) {
741 rc = -EINVAL;
742 count = 0;
743
744 /*
745 * If phandle is 0, then it is an empty entry with no
746 * arguments. Skip forward to the next entry.
747 */
748 phandle = be32_to_cpup(list++);
749 if (phandle) {
750 /*
751 * Find the provider node and parse the #*-cells
752 * property to determine the argument length.
753 *
754 * This is not needed if the cell count is hard-coded
755 * (i.e. cells_name not set, but cell_count is set),
756 * except when we're going to return the found node
757 * below.
758 */
759 if (cells_name || cur_index == index) {
760 node = fdt_node_offset_by_phandle(blob,
761 phandle);
762 if (!node) {
763 debug("%s: could not find phandle\n",
764 fdt_get_name(blob, src_node,
765 NULL));
766 goto err;
767 }
768 }
769
770 if (cells_name) {
771 count = fdtdec_get_int(blob, node, cells_name,
772 -1);
773 if (count == -1) {
774 debug("%s: could not get %s for %s\n",
775 fdt_get_name(blob, src_node,
776 NULL),
777 cells_name,
778 fdt_get_name(blob, node,
779 NULL));
780 goto err;
781 }
782 } else {
783 count = cell_count;
784 }
785
786 /*
787 * Make sure that the arguments actually fit in the
788 * remaining property data length
789 */
790 if (list + count > list_end) {
791 debug("%s: arguments longer than property\n",
792 fdt_get_name(blob, src_node, NULL));
793 goto err;
794 }
795 }
796
797 /*
798 * All of the error cases above bail out of the loop, so at
799 * this point, the parsing is successful. If the requested
800 * index matches, then fill the out_args structure and return,
801 * or return -ENOENT for an empty entry.
802 */
803 rc = -ENOENT;
804 if (cur_index == index) {
805 if (!phandle)
806 goto err;
807
808 if (out_args) {
809 int i;
810
811 if (count > MAX_PHANDLE_ARGS) {
812 debug("%s: too many arguments %d\n",
813 fdt_get_name(blob, src_node,
814 NULL), count);
815 count = MAX_PHANDLE_ARGS;
816 }
817 out_args->node = node;
818 out_args->args_count = count;
819 for (i = 0; i < count; i++) {
820 out_args->args[i] =
821 be32_to_cpup(list++);
822 }
823 }
824
825 /* Found it! return success */
826 return 0;
827 }
828
829 node = -1;
830 list += count;
831 cur_index++;
832 }
833
834 /*
835 * Result will be one of:
836 * -ENOENT : index is for empty phandle
837 * -EINVAL : parsing error on data
838 * [1..n] : Number of phandle (count mode; when index = -1)
839 */
840 rc = index < 0 ? cur_index : -ENOENT;
841 err:
842 return rc;
843}
844
Peng Fan1889a7e2016-02-01 13:31:15 +0800845int fdtdec_get_child_count(const void *blob, int node)
846{
847 int subnode;
848 int num = 0;
849
Simon Glassdf87e6b2016-10-02 17:59:29 -0600850 fdt_for_each_subnode(subnode, blob, node)
Peng Fan1889a7e2016-02-01 13:31:15 +0800851 num++;
852
853 return num;
854}
855
Anton Staffbed4d892012-04-17 09:01:28 +0000856int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100857 u8 *array, int count)
Anton Staffbed4d892012-04-17 09:01:28 +0000858{
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 memcpy(array, cell, count);
865 return err;
866}
867
868const u8 *fdtdec_locate_byte_array(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100869 const char *prop_name, int count)
Anton Staffbed4d892012-04-17 09:01:28 +0000870{
871 const u8 *cell;
872 int err;
873
874 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
875 if (err)
876 return NULL;
877 return cell;
878}
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000879
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000880int fdtdec_get_config_int(const void *blob, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100881 int default_val)
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000882{
883 int config_node;
884
885 debug("%s: %s\n", __func__, prop_name);
886 config_node = fdt_path_offset(blob, "/config");
887 if (config_node < 0)
888 return default_val;
889 return fdtdec_get_int(blob, config_node, prop_name, default_val);
890}
Simon Glass332ab0d2012-10-25 16:30:59 +0000891
Gabe Black79289c02012-10-25 16:31:04 +0000892int fdtdec_get_config_bool(const void *blob, const char *prop_name)
893{
894 int config_node;
895 const void *prop;
896
897 debug("%s: %s\n", __func__, prop_name);
898 config_node = fdt_path_offset(blob, "/config");
899 if (config_node < 0)
900 return 0;
901 prop = fdt_get_property(blob, config_node, prop_name, NULL);
902
903 return prop != NULL;
904}
905
Simon Glass332ab0d2012-10-25 16:30:59 +0000906char *fdtdec_get_config_string(const void *blob, const char *prop_name)
907{
908 const char *nodep;
909 int nodeoffset;
910 int len;
911
912 debug("%s: %s\n", __func__, prop_name);
913 nodeoffset = fdt_path_offset(blob, "/config");
914 if (nodeoffset < 0)
915 return NULL;
916
917 nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
918 if (!nodep)
919 return NULL;
920
921 return (char *)nodep;
922}
Simon Glassf20c4612012-10-25 16:31:00 +0000923
Simon Glass76489832014-10-23 18:58:51 -0600924int fdtdec_decode_region(const void *blob, int node, const char *prop_name,
925 fdt_addr_t *basep, fdt_size_t *sizep)
Simon Glassf20c4612012-10-25 16:31:00 +0000926{
927 const fdt_addr_t *cell;
928 int len;
929
Simon Glass76489832014-10-23 18:58:51 -0600930 debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL),
931 prop_name);
Simon Glassf20c4612012-10-25 16:31:00 +0000932 cell = fdt_getprop(blob, node, prop_name, &len);
Simon Glass76489832014-10-23 18:58:51 -0600933 if (!cell || (len < sizeof(fdt_addr_t) * 2)) {
934 debug("cell=%p, len=%d\n", cell, len);
Simon Glassf20c4612012-10-25 16:31:00 +0000935 return -1;
Simon Glass76489832014-10-23 18:58:51 -0600936 }
Simon Glassf20c4612012-10-25 16:31:00 +0000937
Simon Glass76489832014-10-23 18:58:51 -0600938 *basep = fdt_addr_to_cpu(*cell);
939 *sizep = fdt_size_to_cpu(cell[1]);
940 debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep,
941 (ulong)*sizep);
942
Simon Glassf20c4612012-10-25 16:31:00 +0000943 return 0;
944}
Simon Glass006e73b2014-02-27 13:26:01 -0700945
Simon Glass5f7bfdd2015-03-05 12:25:14 -0700946u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
Thierry Reding56f42242014-08-26 17:33:53 +0200947{
948 u64 number = 0;
949
950 while (cells--)
951 number = (number << 32) | fdt32_to_cpu(*ptr++);
952
953 return number;
954}
955
956int fdt_get_resource(const void *fdt, int node, const char *property,
957 unsigned int index, struct fdt_resource *res)
958{
959 const fdt32_t *ptr, *end;
960 int na, ns, len, parent;
961 unsigned int i = 0;
962
963 parent = fdt_parent_offset(fdt, node);
964 if (parent < 0)
965 return parent;
966
967 na = fdt_address_cells(fdt, parent);
968 ns = fdt_size_cells(fdt, parent);
969
970 ptr = fdt_getprop(fdt, node, property, &len);
971 if (!ptr)
972 return len;
973
974 end = ptr + len / sizeof(*ptr);
975
976 while (ptr + na + ns <= end) {
977 if (i == index) {
Mario Sixb79221a2018-01-15 11:07:36 +0100978 res->start = fdtdec_get_number(ptr, na);
979 res->end = res->start;
Thierry Reding56f42242014-08-26 17:33:53 +0200980 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
981 return 0;
982 }
983
984 ptr += na + ns;
985 i++;
986 }
987
988 return -FDT_ERR_NOTFOUND;
989}
990
991int fdt_get_named_resource(const void *fdt, int node, const char *property,
992 const char *prop_names, const char *name,
993 struct fdt_resource *res)
994{
995 int index;
996
Simon Glassb02e4042016-10-02 17:59:28 -0600997 index = fdt_stringlist_search(fdt, node, prop_names, name);
Thierry Reding56f42242014-08-26 17:33:53 +0200998 if (index < 0)
999 return index;
1000
1001 return fdt_get_resource(fdt, node, property, index, res);
1002}
Thierry Reding9f85eee2014-08-26 17:33:54 +02001003
Simon Glass26403872014-10-23 18:58:56 -06001004int fdtdec_decode_memory_region(const void *blob, int config_node,
1005 const char *mem_type, const char *suffix,
1006 fdt_addr_t *basep, fdt_size_t *sizep)
1007{
1008 char prop_name[50];
1009 const char *mem;
1010 fdt_size_t size, offset_size;
1011 fdt_addr_t base, offset;
1012 int node;
1013
1014 if (config_node == -1) {
1015 config_node = fdt_path_offset(blob, "/config");
1016 if (config_node < 0) {
1017 debug("%s: Cannot find /config node\n", __func__);
1018 return -ENOENT;
1019 }
1020 }
1021 if (!suffix)
1022 suffix = "";
1023
1024 snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type,
1025 suffix);
1026 mem = fdt_getprop(blob, config_node, prop_name, NULL);
1027 if (!mem) {
1028 debug("%s: No memory type for '%s', using /memory\n", __func__,
1029 prop_name);
1030 mem = "/memory";
1031 }
1032
1033 node = fdt_path_offset(blob, mem);
1034 if (node < 0) {
1035 debug("%s: Failed to find node '%s': %s\n", __func__, mem,
1036 fdt_strerror(node));
1037 return -ENOENT;
1038 }
1039
1040 /*
1041 * Not strictly correct - the memory may have multiple banks. We just
1042 * use the first
1043 */
1044 if (fdtdec_decode_region(blob, node, "reg", &base, &size)) {
1045 debug("%s: Failed to decode memory region %s\n", __func__,
1046 mem);
1047 return -EINVAL;
1048 }
1049
1050 snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type,
1051 suffix);
1052 if (fdtdec_decode_region(blob, config_node, prop_name, &offset,
1053 &offset_size)) {
1054 debug("%s: Failed to decode memory region '%s'\n", __func__,
1055 prop_name);
1056 return -EINVAL;
1057 }
1058
1059 *basep = base + offset;
1060 *sizep = offset_size;
1061
1062 return 0;
1063}
Simon Glassb45122f2015-02-27 22:06:34 -07001064
Simon Glass12e67112015-04-14 21:03:21 -06001065static int decode_timing_property(const void *blob, int node, const char *name,
1066 struct timing_entry *result)
1067{
1068 int length, ret = 0;
1069 const u32 *prop;
1070
1071 prop = fdt_getprop(blob, node, name, &length);
1072 if (!prop) {
1073 debug("%s: could not find property %s\n",
1074 fdt_get_name(blob, node, NULL), name);
1075 return length;
1076 }
1077
1078 if (length == sizeof(u32)) {
1079 result->typ = fdtdec_get_int(blob, node, name, 0);
1080 result->min = result->typ;
1081 result->max = result->typ;
1082 } else {
1083 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
1084 }
1085
1086 return ret;
1087}
1088
1089int fdtdec_decode_display_timing(const void *blob, int parent, int index,
1090 struct display_timing *dt)
1091{
1092 int i, node, timings_node;
1093 u32 val = 0;
1094 int ret = 0;
1095
1096 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
1097 if (timings_node < 0)
1098 return timings_node;
1099
1100 for (i = 0, node = fdt_first_subnode(blob, timings_node);
1101 node > 0 && i != index;
1102 node = fdt_next_subnode(blob, node))
1103 i++;
1104
1105 if (node < 0)
1106 return node;
1107
1108 memset(dt, 0, sizeof(*dt));
1109
1110 ret |= decode_timing_property(blob, node, "hback-porch",
1111 &dt->hback_porch);
1112 ret |= decode_timing_property(blob, node, "hfront-porch",
1113 &dt->hfront_porch);
1114 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
1115 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
1116 ret |= decode_timing_property(blob, node, "vback-porch",
1117 &dt->vback_porch);
1118 ret |= decode_timing_property(blob, node, "vfront-porch",
1119 &dt->vfront_porch);
1120 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
1121 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
1122 ret |= decode_timing_property(blob, node, "clock-frequency",
1123 &dt->pixelclock);
1124
1125 dt->flags = 0;
1126 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1127 if (val != -1) {
1128 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1129 DISPLAY_FLAGS_VSYNC_LOW;
1130 }
1131 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1132 if (val != -1) {
1133 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1134 DISPLAY_FLAGS_HSYNC_LOW;
1135 }
1136 val = fdtdec_get_int(blob, node, "de-active", -1);
1137 if (val != -1) {
1138 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1139 DISPLAY_FLAGS_DE_LOW;
1140 }
1141 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1142 if (val != -1) {
1143 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1144 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1145 }
1146
1147 if (fdtdec_get_bool(blob, node, "interlaced"))
1148 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1149 if (fdtdec_get_bool(blob, node, "doublescan"))
1150 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1151 if (fdtdec_get_bool(blob, node, "doubleclk"))
1152 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1153
Simon Glass04b9dd12016-05-05 07:28:21 -06001154 return ret;
Simon Glass12e67112015-04-14 21:03:21 -06001155}
1156
Nathan Rossi623f6012016-12-19 00:03:34 +10001157int fdtdec_setup_memory_size(void)
1158{
1159 int ret, mem;
1160 struct fdt_resource res;
1161
1162 mem = fdt_path_offset(gd->fdt_blob, "/memory");
1163 if (mem < 0) {
1164 debug("%s: Missing /memory node\n", __func__);
1165 return -EINVAL;
1166 }
1167
1168 ret = fdt_get_resource(gd->fdt_blob, mem, "reg", 0, &res);
1169 if (ret != 0) {
1170 debug("%s: Unable to decode first memory bank\n", __func__);
1171 return -EINVAL;
1172 }
1173
1174 gd->ram_size = (phys_size_t)(res.end - res.start + 1);
Simon Glassc69380f2017-05-27 07:38:13 -06001175 debug("%s: Initial DRAM size %llx\n", __func__,
1176 (unsigned long long)gd->ram_size);
Nathan Rossi623f6012016-12-19 00:03:34 +10001177
1178 return 0;
1179}
1180
1181#if defined(CONFIG_NR_DRAM_BANKS)
1182int fdtdec_setup_memory_banksize(void)
1183{
Marek Vasut942ee092017-11-27 05:32:42 +01001184 int bank, ret, mem, reg = 0;
Nathan Rossi623f6012016-12-19 00:03:34 +10001185 struct fdt_resource res;
1186
Marek Vasut942ee092017-11-27 05:32:42 +01001187 mem = fdt_node_offset_by_prop_value(gd->fdt_blob, -1, "device_type",
1188 "memory", 7);
Nathan Rossi623f6012016-12-19 00:03:34 +10001189 if (mem < 0) {
1190 debug("%s: Missing /memory node\n", __func__);
1191 return -EINVAL;
1192 }
1193
1194 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
Marek Vasut942ee092017-11-27 05:32:42 +01001195 ret = fdt_get_resource(gd->fdt_blob, mem, "reg", reg++, &res);
1196 if (ret == -FDT_ERR_NOTFOUND) {
1197 reg = 0;
1198 mem = fdt_node_offset_by_prop_value(gd->fdt_blob, mem,
1199 "device_type",
1200 "memory", 7);
1201 if (mem == -FDT_ERR_NOTFOUND)
1202 break;
1203
1204 ret = fdt_get_resource(gd->fdt_blob, mem, "reg", reg++, &res);
1205 if (ret == -FDT_ERR_NOTFOUND)
1206 break;
1207 }
1208 if (ret != 0) {
Nathan Rossi623f6012016-12-19 00:03:34 +10001209 return -EINVAL;
Marek Vasut942ee092017-11-27 05:32:42 +01001210 }
Nathan Rossi623f6012016-12-19 00:03:34 +10001211
1212 gd->bd->bi_dram[bank].start = (phys_addr_t)res.start;
1213 gd->bd->bi_dram[bank].size =
1214 (phys_size_t)(res.end - res.start + 1);
1215
1216 debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
1217 __func__, bank,
1218 (unsigned long long)gd->bd->bi_dram[bank].start,
1219 (unsigned long long)gd->bd->bi_dram[bank].size);
1220 }
1221
1222 return 0;
1223}
1224#endif
1225
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001226#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1227# if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\
1228 CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO)
1229static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1230{
1231 size_t sz_out = CONFIG_SPL_MULTI_DTB_FIT_UNCOMPRESS_SZ;
1232 ulong sz_in = sz_src;
1233 void *dst;
1234 int rc;
1235
1236 if (CONFIG_IS_ENABLED(GZIP))
1237 if (gzip_parse_header(src, sz_in) < 0)
1238 return -1;
1239 if (CONFIG_IS_ENABLED(LZO))
1240 if (!lzop_is_valid_header(src))
1241 return -EBADMSG;
1242
1243 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) {
1244 dst = malloc(sz_out);
1245 if (!dst) {
1246 puts("uncompress_blob: Unable to allocate memory\n");
1247 return -ENOMEM;
1248 }
1249 } else {
1250# if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA)
1251 dst = (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR);
1252# else
1253 return -ENOTSUPP;
1254# endif
1255 }
1256
1257 if (CONFIG_IS_ENABLED(GZIP))
1258 rc = gunzip(dst, sz_out, (u8 *)src, &sz_in);
1259 else if (CONFIG_IS_ENABLED(LZO))
1260 rc = lzop_decompress(src, sz_in, dst, &sz_out);
1261
1262 if (rc < 0) {
1263 /* not a valid compressed blob */
1264 puts("uncompress_blob: Unable to uncompress\n");
1265 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC))
1266 free(dst);
1267 return -EBADMSG;
1268 }
1269 *dstp = dst;
1270 return 0;
1271}
1272# else
1273static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1274{
1275 return -ENOTSUPP;
1276}
1277# endif
1278#endif
1279
Rob Clark3b595da2018-01-10 11:34:37 +01001280#if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
1281/*
1282 * For CONFIG_OF_SEPARATE, the board may optionally implement this to
1283 * provide and/or fixup the fdt.
1284 */
1285__weak void *board_fdt_blob_setup(void)
1286{
1287 void *fdt_blob = NULL;
1288#ifdef CONFIG_SPL_BUILD
1289 /* FDT is at end of BSS unless it is in a different memory region */
1290 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
1291 fdt_blob = (ulong *)&_image_binary_end;
1292 else
1293 fdt_blob = (ulong *)&__bss_end;
1294#else
1295 /* FDT is at end of image */
1296 fdt_blob = (ulong *)&_end;
1297#endif
1298 return fdt_blob;
1299}
1300#endif
1301
Simon Glass08793612015-02-27 22:06:35 -07001302int fdtdec_setup(void)
Simon Glassb45122f2015-02-27 22:06:34 -07001303{
Masahiro Yamada0f925822015-08-12 07:31:55 +09001304#if CONFIG_IS_ENABLED(OF_CONTROL)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001305# if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1306 void *fdt_blob;
1307# endif
Simon Glassb45122f2015-02-27 22:06:34 -07001308# ifdef CONFIG_OF_EMBED
1309 /* Get a pointer to the FDT */
Goldschmidt Simon9bd76b82017-11-21 12:29:56 +00001310# ifdef CONFIG_SPL_BUILD
1311 gd->fdt_blob = __dtb_dt_spl_begin;
1312# else
Simon Glassb45122f2015-02-27 22:06:34 -07001313 gd->fdt_blob = __dtb_dt_begin;
Goldschmidt Simon9bd76b82017-11-21 12:29:56 +00001314# endif
Rob Clark3b595da2018-01-10 11:34:37 +01001315# elif defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
Alex Deymo82f766d2017-04-02 01:25:20 -07001316 /* Allow the board to override the fdt address. */
1317 gd->fdt_blob = board_fdt_blob_setup();
Simon Glassb45122f2015-02-27 22:06:34 -07001318# elif defined(CONFIG_OF_HOSTFILE)
1319 if (sandbox_read_fdt_from_file()) {
1320 puts("Failed to read control FDT\n");
1321 return -1;
1322 }
1323# endif
1324# ifndef CONFIG_SPL_BUILD
1325 /* Allow the early environment to override the fdt address */
Simon Glassbfebc8c2017-08-03 12:22:13 -06001326 gd->fdt_blob = (void *)env_get_ulong("fdtcontroladdr", 16,
Simon Glassb45122f2015-02-27 22:06:34 -07001327 (uintptr_t)gd->fdt_blob);
1328# endif
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001329
1330# if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1331 /*
1332 * Try and uncompress the blob.
1333 * Unfortunately there is no way to know how big the input blob really
1334 * is. So let us set the maximum input size arbitrarily high. 16MB
1335 * ought to be more than enough for packed DTBs.
1336 */
1337 if (uncompress_blob(gd->fdt_blob, 0x1000000, &fdt_blob) == 0)
1338 gd->fdt_blob = fdt_blob;
1339
1340 /*
1341 * Check if blob is a FIT images containings DTBs.
1342 * If so, pick the most relevant
1343 */
1344 fdt_blob = locate_dtb_in_fit(gd->fdt_blob);
1345 if (fdt_blob)
1346 gd->fdt_blob = fdt_blob;
1347# endif
Simon Glassb45122f2015-02-27 22:06:34 -07001348#endif
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001349
Simon Glass08793612015-02-27 22:06:35 -07001350 return fdtdec_prepare_fdt();
Simon Glassb45122f2015-02-27 22:06:34 -07001351}
1352
1353#endif /* !USE_HOSTCC */