blob: c60972dfbe868acee761d5569f0012b9f3e4a024 [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Simon Glassb5220bc2011-10-24 19:15:32 +00002/*
3 * Copyright (c) 2011 The Chromium OS Authors.
Simon Glassf43fc162023-04-25 10:27:21 -06004 *
5 * NOTE: Please do not add new devicetree-reading functionality into this file.
6 * Add it to the ofnode API instead, since that is compatible with livetree.
Simon Glassb5220bc2011-10-24 19:15:32 +00007 */
8
Heiko Schocher29a23f92014-03-03 12:19:30 +01009#ifndef USE_HOSTCC
Simon Glassb5220bc2011-10-24 19:15:32 +000010#include <common.h>
Jean-Jacques Hiblot035d6402017-09-15 12:57:31 +020011#include <boot_fit.h>
Simon Glass4e4bf942022-07-31 12:28:48 -060012#include <display_options.h>
Simon Glassfcc0a872015-11-29 13:17:54 -070013#include <dm.h>
Simon Glassdb41d652019-12-28 10:45:07 -070014#include <hang.h>
Simon Glass9b4a2052019-12-28 10:45:05 -070015#include <init.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -060016#include <log.h>
Simon Glass336d4612020-02-03 07:36:16 -070017#include <malloc.h>
Simon Glass90526e92020-05-10 11:39:56 -060018#include <net.h>
Simon Glassb62d3492022-12-21 16:08:19 -070019#include <spl.h>
Simon Glass9eef56d2019-08-01 09:46:48 -060020#include <env.h>
Jean-Jacques Hiblot035d6402017-09-15 12:57:31 +020021#include <errno.h>
22#include <fdtdec.h>
23#include <fdt_support.h>
Simon Glass0c670fc2019-08-01 09:46:36 -060024#include <gzip.h>
Heinrich Schuchardtf980c992018-11-18 17:58:50 +010025#include <mapmem.h>
Masahiro Yamadab08c8c42018-03-05 01:20:11 +090026#include <linux/libfdt.h>
Jean-Jacques Hiblot035d6402017-09-15 12:57:31 +020027#include <serial.h>
Simon Glass401d1c42020-10-30 21:38:53 -060028#include <asm/global_data.h>
Jean-Jacques Hiblot035d6402017-09-15 12:57:31 +020029#include <asm/sections.h>
Simon Glassee88ba72022-09-06 20:27:19 -060030#include <dm/ofnode.h>
31#include <dm/of_extra.h>
Simon Glass5c33c9f2014-07-23 06:55:09 -060032#include <linux/ctype.h>
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +020033#include <linux/lzo.h>
Michal Simekc2f09502020-07-10 13:34:44 +020034#include <linux/ioport.h>
Simon Glassb5220bc2011-10-24 19:15:32 +000035
36DECLARE_GLOBAL_DATA_PTR;
37
38/*
39 * Here are the type we know about. One day we might allow drivers to
40 * register. For now we just put them here. The COMPAT macro allows us to
41 * turn this into a sparse list later, and keeps the ID with the name.
Simon Glass01a227d2016-06-19 17:33:13 -060042 *
43 * NOTE: This list is basically a TODO list for things that need to be
44 * converted to driver model. So don't add new things here unless there is a
45 * good reason why driver-model conversion is infeasible. Examples include
46 * things which are used before driver model is available.
Simon Glassb5220bc2011-10-24 19:15:32 +000047 */
48#define COMPAT(id, name) name
49static const char * const compat_names[COMPAT_COUNT] = {
Simon Glassf88fe2d2012-02-27 10:52:34 +000050 COMPAT(UNKNOWN, "<none>"),
Jimmy Zhang0e35ad02012-04-02 13:18:52 +000051 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
52 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
Jim Lin312693c2012-07-29 20:53:29 +000053 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
Thierry Reding79c7a902014-12-09 22:25:09 -070054 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070055 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
Rajeshwari Shinde6abd1622013-01-07 23:35:05 +000056 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
Vivek Gautam108b85b2013-09-14 14:02:48 +053057 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
Akshay Saraswat618766c2013-02-25 01:13:01 +000058 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
Piotr Wilczekde461c52014-03-07 14:59:39 +010059 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
Jaehoon Chung7d3ca0f2014-05-16 13:59:51 +090060 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
Neil Armstrong51e4e3e2019-02-10 10:16:21 +000061 COMPAT(GENERIC_SPI_FLASH, "jedec,spi-nor"),
Ajay Kumar45c480c2014-09-05 16:53:33 +053062 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
Simon Glass77f9b1f2014-11-12 22:42:21 -070063 COMPAT(INTEL_MICROCODE, "intel,microcode"),
Bin Mengc89ada02015-02-05 23:42:26 +080064 COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
Marek Vasut6ab00db2015-07-25 19:33:56 +020065 COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
Marek Vasut129adf52015-07-25 10:48:14 +020066 COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"),
Marek Vasutef4b01b2015-12-05 19:28:44 +010067 COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"),
Simon Glass39ea0ee2016-06-19 17:33:14 -060068 COMPAT(INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"),
69 COMPAT(INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"),
70 COMPAT(INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"),
Ley Foon Tane11b5e82017-04-05 17:32:47 +080071 COMPAT(ALTERA_SOCFPGA_CLK, "altr,clk-mgr"),
72 COMPAT(ALTERA_SOCFPGA_PINCTRL_SINGLE, "pinctrl-single"),
73 COMPAT(ALTERA_SOCFPGA_H2F_BRG, "altr,socfpga-hps2fpga-bridge"),
74 COMPAT(ALTERA_SOCFPGA_LWH2F_BRG, "altr,socfpga-lwhps2fpga-bridge"),
75 COMPAT(ALTERA_SOCFPGA_F2H_BRG, "altr,socfpga-fpga2hps-bridge"),
76 COMPAT(ALTERA_SOCFPGA_F2SDR0, "altr,socfpga-fpga2sdram0-bridge"),
77 COMPAT(ALTERA_SOCFPGA_F2SDR1, "altr,socfpga-fpga2sdram1-bridge"),
78 COMPAT(ALTERA_SOCFPGA_F2SDR2, "altr,socfpga-fpga2sdram2-bridge"),
Tien Fong Cheeeb57c0b2017-09-25 16:40:03 +080079 COMPAT(ALTERA_SOCFPGA_FPGA0, "altr,socfpga-a10-fpga-mgr"),
80 COMPAT(ALTERA_SOCFPGA_NOC, "altr,socfpga-a10-noc"),
Marek Vasut19c8fc72018-05-12 11:56:10 +020081 COMPAT(ALTERA_SOCFPGA_CLK_INIT, "altr,socfpga-a10-clk-init")
Simon Glassb5220bc2011-10-24 19:15:32 +000082};
83
Simon Glassff66e7b2021-12-16 20:59:34 -070084static const char *const fdt_src_name[] = {
85 [FDTSRC_SEPARATE] = "separate",
86 [FDTSRC_FIT] = "fit",
87 [FDTSRC_BOARD] = "board",
88 [FDTSRC_EMBED] = "embed",
89 [FDTSRC_ENV] = "env",
90};
91
92const char *fdtdec_get_srcname(void)
93{
94 return fdt_src_name[gd->fdt_src];
95}
96
Simon Glassa53f4a22012-01-17 08:20:50 +000097const char *fdtdec_get_compatible(enum fdt_compat_id id)
98{
99 /* We allow reading of the 'unknown' ID for testing purposes */
100 assert(id >= 0 && id < COMPAT_COUNT);
101 return compat_names[id];
102}
103
Stephen Warren02464e32015-08-06 15:31:02 -0600104fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100105 const char *prop_name, int index, int na,
106 int ns, fdt_size_t *sizep,
107 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600108{
109 const fdt32_t *prop, *prop_end;
110 const fdt32_t *prop_addr, *prop_size, *prop_after_size;
111 int len;
112 fdt_addr_t addr;
113
114 debug("%s: %s: ", __func__, prop_name);
115
Stephen Warren02464e32015-08-06 15:31:02 -0600116 prop = fdt_getprop(blob, node, prop_name, &len);
117 if (!prop) {
118 debug("(not found)\n");
119 return FDT_ADDR_T_NONE;
120 }
121 prop_end = prop + (len / sizeof(*prop));
122
123 prop_addr = prop + (index * (na + ns));
124 prop_size = prop_addr + na;
125 prop_after_size = prop_size + ns;
126 if (prop_after_size > prop_end) {
127 debug("(not enough data: expected >= %d cells, got %d cells)\n",
128 (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
129 return FDT_ADDR_T_NONE;
130 }
131
Vignesh R5efa1bf2017-03-20 10:04:38 +0530132#if CONFIG_IS_ENABLED(OF_TRANSLATE)
Stephen Warren6e06acb2016-08-05 09:47:51 -0600133 if (translate)
134 addr = fdt_translate_address(blob, node, prop_addr);
135 else
136#endif
137 addr = fdtdec_get_number(prop_addr, na);
Stephen Warren02464e32015-08-06 15:31:02 -0600138
139 if (sizep) {
140 *sizep = fdtdec_get_number(prop_size, ns);
Simon Glassfd30d2c2016-02-29 15:25:37 -0700141 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
142 (unsigned long long)*sizep);
Stephen Warren02464e32015-08-06 15:31:02 -0600143 } else {
Simon Glassfd30d2c2016-02-29 15:25:37 -0700144 debug("addr=%08llx\n", (unsigned long long)addr);
Stephen Warren02464e32015-08-06 15:31:02 -0600145 }
146
147 return addr;
148}
149
150fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
Mario Six2e386622018-01-15 11:07:35 +0100151 int node, const char *prop_name,
152 int index, fdt_size_t *sizep,
153 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600154{
155 int na, ns;
156
157 debug("%s: ", __func__);
158
159 na = fdt_address_cells(blob, parent);
160 if (na < 1) {
161 debug("(bad #address-cells)\n");
162 return FDT_ADDR_T_NONE;
163 }
164
165 ns = fdt_size_cells(blob, parent);
Przemyslaw Marczakff0a6352015-09-30 13:14:50 +0200166 if (ns < 0) {
Stephen Warren02464e32015-08-06 15:31:02 -0600167 debug("(bad #size-cells)\n");
168 return FDT_ADDR_T_NONE;
169 }
170
171 debug("na=%d, ns=%d, ", na, ns);
172
173 return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600174 ns, sizep, translate);
Stephen Warren02464e32015-08-06 15:31:02 -0600175}
176
177fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100178 const char *prop_name, int index,
179 fdt_size_t *sizep,
180 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600181{
182 int parent;
183
184 debug("%s: ", __func__);
185
186 parent = fdt_parent_offset(blob, node);
187 if (parent < 0) {
188 debug("(no parent found)\n");
189 return FDT_ADDR_T_NONE;
190 }
191
192 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600193 index, sizep, translate);
Stephen Warren02464e32015-08-06 15:31:02 -0600194}
195
Simon Glass4397a2a2013-03-19 04:58:51 +0000196fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100197 const char *prop_name, fdt_size_t *sizep)
Simon Glassb5220bc2011-10-24 19:15:32 +0000198{
Stephen Warrend93b9a02015-09-25 10:11:41 -0600199 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
200
Stephen Warren02464e32015-08-06 15:31:02 -0600201 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
202 sizeof(fdt_addr_t) / sizeof(fdt32_t),
Stephen Warren6e06acb2016-08-05 09:47:51 -0600203 ns, sizep, false);
Simon Glassb5220bc2011-10-24 19:15:32 +0000204}
205
Mario Six2e386622018-01-15 11:07:35 +0100206fdt_addr_t fdtdec_get_addr(const void *blob, int node, const char *prop_name)
Simon Glass4397a2a2013-03-19 04:58:51 +0000207{
208 return fdtdec_get_addr_size(blob, node, prop_name, NULL);
209}
210
Bin Menga62e84d2014-12-31 16:05:11 +0800211int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
212{
213 const char *list, *end;
214 int len;
215
216 list = fdt_getprop(blob, node, "compatible", &len);
217 if (!list)
218 return -ENOENT;
219
220 end = list + len;
221 while (list < end) {
Bin Menga62e84d2014-12-31 16:05:11 +0800222 len = strlen(list);
223 if (len >= strlen("pciVVVV,DDDD")) {
Mario Sixb79221a2018-01-15 11:07:36 +0100224 char *s = strstr(list, "pci");
Bin Menga62e84d2014-12-31 16:05:11 +0800225
226 /*
227 * check if the string is something like pciVVVV,DDDD.RR
228 * or just pciVVVV,DDDD
229 */
230 if (s && s[7] == ',' &&
231 (s[12] == '.' || s[12] == 0)) {
232 s += 3;
233 *vendor = simple_strtol(s, NULL, 16);
234
235 s += 5;
236 *device = simple_strtol(s, NULL, 16);
237
238 return 0;
239 }
Bin Menga62e84d2014-12-31 16:05:11 +0800240 }
Bin Mengbc6351e2015-08-20 06:40:25 -0700241 list += (len + 1);
Bin Menga62e84d2014-12-31 16:05:11 +0800242 }
243
244 return -ENOENT;
245}
246
Simon Glass194fca92020-01-27 08:49:38 -0700247int fdtdec_get_pci_bar32(const struct udevice *dev, struct fdt_pci_addr *addr,
Simon Glassfcc0a872015-11-29 13:17:54 -0700248 u32 *bar)
Bin Menga62e84d2014-12-31 16:05:11 +0800249{
Bin Menga62e84d2014-12-31 16:05:11 +0800250 int barnum;
Bin Menga62e84d2014-12-31 16:05:11 +0800251
252 /* extract the bar number from fdt_pci_addr */
253 barnum = addr->phys_hi & 0xff;
Mario Sixb79221a2018-01-15 11:07:36 +0100254 if (barnum < PCI_BASE_ADDRESS_0 || barnum > PCI_CARDBUS_CIS)
Bin Menga62e84d2014-12-31 16:05:11 +0800255 return -EINVAL;
256
257 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
Simon Glassb717f2f2021-08-01 18:54:18 -0600258
Simon Glassfcc0a872015-11-29 13:17:54 -0700259 *bar = dm_pci_read_bar32(dev, barnum);
Bin Menga62e84d2014-12-31 16:05:11 +0800260
261 return 0;
262}
Suneel Garapati1db7ee42019-10-19 15:19:35 -0700263
264int fdtdec_get_pci_bus_range(const void *blob, int node,
265 struct fdt_resource *res)
266{
267 const u32 *values;
268 int len;
269
270 values = fdt_getprop(blob, node, "bus-range", &len);
271 if (!values || len < sizeof(*values) * 2)
272 return -EINVAL;
273
274 res->start = fdt32_to_cpu(*values++);
275 res->end = fdt32_to_cpu(*values);
276
277 return 0;
278}
Bin Menga62e84d2014-12-31 16:05:11 +0800279
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000280uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100281 uint64_t default_val)
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000282{
Jean-Jacques Hiblotd60ae4c2019-10-22 10:05:22 +0200283 const unaligned_fdt64_t *cell64;
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000284 int length;
285
286 cell64 = fdt_getprop(blob, node, prop_name, &length);
287 if (!cell64 || length < sizeof(*cell64))
288 return default_val;
289
290 return fdt64_to_cpu(*cell64);
291}
292
Simon Glassf88fe2d2012-02-27 10:52:34 +0000293int fdtdec_get_is_enabled(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000294{
295 const char *cell;
296
Simon Glassf88fe2d2012-02-27 10:52:34 +0000297 /*
298 * It should say "okay", so only allow that. Some fdts use "ok" but
299 * this is a bug. Please fix your device tree source file. See here
300 * for discussion:
301 *
302 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
303 */
Simon Glassb5220bc2011-10-24 19:15:32 +0000304 cell = fdt_getprop(blob, node, "status", NULL);
305 if (cell)
Mario Sixb79221a2018-01-15 11:07:36 +0100306 return strcmp(cell, "okay") == 0;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000307 return 1;
Simon Glassb5220bc2011-10-24 19:15:32 +0000308}
309
Gerald Van Baren7cde3972012-11-12 23:13:54 -0500310enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000311{
312 enum fdt_compat_id id;
313
314 /* Search our drivers */
315 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
Mario Sixb79221a2018-01-15 11:07:36 +0100316 if (fdt_node_check_compatible(blob, node,
317 compat_names[id]) == 0)
Simon Glassb5220bc2011-10-24 19:15:32 +0000318 return id;
319 return COMPAT_UNKNOWN;
320}
321
Mario Six2e386622018-01-15 11:07:35 +0100322int fdtdec_next_compatible(const void *blob, int node, enum fdt_compat_id id)
Simon Glassb5220bc2011-10-24 19:15:32 +0000323{
324 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
325}
326
Simon Glass3ddecfc2012-04-02 13:18:42 +0000327int fdtdec_next_compatible_subnode(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100328 enum fdt_compat_id id, int *depthp)
Simon Glass3ddecfc2012-04-02 13:18:42 +0000329{
330 do {
331 node = fdt_next_node(blob, node, depthp);
332 } while (*depthp > 1);
333
334 /* If this is a direct subnode, and compatible, return it */
335 if (*depthp == 1 && 0 == fdt_node_check_compatible(
336 blob, node, compat_names[id]))
337 return node;
338
339 return -FDT_ERR_NOTFOUND;
340}
341
Mario Six2e386622018-01-15 11:07:35 +0100342int fdtdec_next_alias(const void *blob, const char *name, enum fdt_compat_id id,
343 int *upto)
Simon Glassb5220bc2011-10-24 19:15:32 +0000344{
345#define MAX_STR_LEN 20
346 char str[MAX_STR_LEN + 20];
347 int node, err;
348
349 /* snprintf() is not available */
350 assert(strlen(name) < MAX_STR_LEN);
351 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
Simon Glass00878472012-10-31 14:02:42 +0000352 node = fdt_path_offset(blob, str);
Simon Glassb5220bc2011-10-24 19:15:32 +0000353 if (node < 0)
354 return node;
355 err = fdt_node_check_compatible(blob, node, compat_names[id]);
356 if (err < 0)
357 return err;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000358 if (err)
359 return -FDT_ERR_NOTFOUND;
360 (*upto)++;
361 return node;
Simon Glassb5220bc2011-10-24 19:15:32 +0000362}
363
Simon Glassa53f4a22012-01-17 08:20:50 +0000364int fdtdec_find_aliases_for_id(const void *blob, const char *name,
Mario Six2e386622018-01-15 11:07:35 +0100365 enum fdt_compat_id id, int *node_list,
366 int maxcount)
Simon Glassa53f4a22012-01-17 08:20:50 +0000367{
Simon Glassc6782272012-02-03 15:13:53 +0000368 memset(node_list, '\0', sizeof(*node_list) * maxcount);
369
370 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
371}
372
373/* TODO: Can we tighten this code up a little? */
374int fdtdec_add_aliases_for_id(const void *blob, const char *name,
Mario Six2e386622018-01-15 11:07:35 +0100375 enum fdt_compat_id id, int *node_list,
376 int maxcount)
Simon Glassc6782272012-02-03 15:13:53 +0000377{
Simon Glassa53f4a22012-01-17 08:20:50 +0000378 int name_len = strlen(name);
379 int nodes[maxcount];
380 int num_found = 0;
381 int offset, node;
382 int alias_node;
383 int count;
384 int i, j;
385
386 /* find the alias node if present */
387 alias_node = fdt_path_offset(blob, "/aliases");
388
389 /*
390 * start with nothing, and we can assume that the root node can't
391 * match
392 */
393 memset(nodes, '\0', sizeof(nodes));
394
395 /* First find all the compatible nodes */
396 for (node = count = 0; node >= 0 && count < maxcount;) {
397 node = fdtdec_next_compatible(blob, node, id);
398 if (node >= 0)
399 nodes[count++] = node;
400 }
401 if (node >= 0)
402 debug("%s: warning: maxcount exceeded with alias '%s'\n",
Mario Six2e386622018-01-15 11:07:35 +0100403 __func__, name);
Simon Glassa53f4a22012-01-17 08:20:50 +0000404
405 /* Now find all the aliases */
Simon Glassa53f4a22012-01-17 08:20:50 +0000406 for (offset = fdt_first_property_offset(blob, alias_node);
407 offset > 0;
408 offset = fdt_next_property_offset(blob, offset)) {
409 const struct fdt_property *prop;
410 const char *path;
411 int number;
412 int found;
413
414 node = 0;
415 prop = fdt_get_property_by_offset(blob, offset, NULL);
416 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
417 if (prop->len && 0 == strncmp(path, name, name_len))
418 node = fdt_path_offset(blob, prop->data);
419 if (node <= 0)
420 continue;
421
422 /* Get the alias number */
Simon Glass0b1284e2021-07-24 09:03:30 -0600423 number = dectoul(path + name_len, NULL);
Simon Glassa53f4a22012-01-17 08:20:50 +0000424 if (number < 0 || number >= maxcount) {
425 debug("%s: warning: alias '%s' is out of range\n",
Mario Six2e386622018-01-15 11:07:35 +0100426 __func__, path);
Simon Glassa53f4a22012-01-17 08:20:50 +0000427 continue;
428 }
429
430 /* Make sure the node we found is actually in our list! */
431 found = -1;
432 for (j = 0; j < count; j++)
433 if (nodes[j] == node) {
434 found = j;
435 break;
436 }
437
438 if (found == -1) {
439 debug("%s: warning: alias '%s' points to a node "
440 "'%s' that is missing or is not compatible "
441 " with '%s'\n", __func__, path,
442 fdt_get_name(blob, node, NULL),
443 compat_names[id]);
444 continue;
445 }
446
447 /*
448 * Add this node to our list in the right place, and mark
449 * it as done.
450 */
451 if (fdtdec_get_is_enabled(blob, node)) {
Simon Glassc6782272012-02-03 15:13:53 +0000452 if (node_list[number]) {
453 debug("%s: warning: alias '%s' requires that "
454 "a node be placed in the list in a "
455 "position which is already filled by "
456 "node '%s'\n", __func__, path,
457 fdt_get_name(blob, node, NULL));
458 continue;
459 }
Simon Glassa53f4a22012-01-17 08:20:50 +0000460 node_list[number] = node;
461 if (number >= num_found)
462 num_found = number + 1;
463 }
Simon Glassc6782272012-02-03 15:13:53 +0000464 nodes[found] = 0;
Simon Glassa53f4a22012-01-17 08:20:50 +0000465 }
466
467 /* Add any nodes not mentioned by an alias */
468 for (i = j = 0; i < maxcount; i++) {
469 if (!node_list[i]) {
470 for (; j < maxcount; j++)
471 if (nodes[j] &&
Mario Six2e386622018-01-15 11:07:35 +0100472 fdtdec_get_is_enabled(blob, nodes[j]))
Simon Glassa53f4a22012-01-17 08:20:50 +0000473 break;
474
475 /* Have we run out of nodes to add? */
476 if (j == maxcount)
477 break;
478
479 assert(!node_list[i]);
480 node_list[i] = nodes[j++];
481 if (i >= num_found)
482 num_found = i + 1;
483 }
484 }
485
486 return num_found;
487}
488
Simon Glass5c33c9f2014-07-23 06:55:09 -0600489int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
490 int *seqp)
491{
492 int base_len = strlen(base);
493 const char *find_name;
494 int find_namelen;
495 int prop_offset;
496 int aliases;
497
498 find_name = fdt_get_name(blob, offset, &find_namelen);
499 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
500
501 aliases = fdt_path_offset(blob, "/aliases");
502 for (prop_offset = fdt_first_property_offset(blob, aliases);
503 prop_offset > 0;
504 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
505 const char *prop;
506 const char *name;
507 const char *slash;
Simon Glassc4af6732015-06-23 15:39:08 -0600508 int len, val;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600509
510 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
511 debug(" - %s, %s\n", name, prop);
512 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
513 strncmp(name, base, base_len))
514 continue;
515
516 slash = strrchr(prop, '/');
517 if (strcmp(slash + 1, find_name))
518 continue;
Aswath Govindrajuc5891322020-12-03 10:55:45 +0530519
520 /*
521 * Adding an extra check to distinguish DT nodes with
522 * same name
523 */
Simon Glassebc1d502022-12-21 16:08:28 -0700524 if (IS_ENABLED(CONFIG_PHANDLE_CHECK_SEQ)) {
525 if (fdt_get_phandle(blob, offset) !=
526 fdt_get_phandle(blob, fdt_path_offset(blob, prop)))
527 continue;
528 }
Aswath Govindrajuc5891322020-12-03 10:55:45 +0530529
Simon Glassc4af6732015-06-23 15:39:08 -0600530 val = trailing_strtol(name);
531 if (val != -1) {
532 *seqp = val;
533 debug("Found seq %d\n", *seqp);
534 return 0;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600535 }
536 }
537
538 debug("Not found\n");
539 return -ENOENT;
540}
541
Michal Simek003c9dc2019-01-31 16:30:58 +0100542int fdtdec_get_alias_highest_id(const void *blob, const char *base)
543{
544 int base_len = strlen(base);
545 int prop_offset;
546 int aliases;
547 int max = -1;
548
549 debug("Looking for highest alias id for '%s'\n", base);
550
551 aliases = fdt_path_offset(blob, "/aliases");
552 for (prop_offset = fdt_first_property_offset(blob, aliases);
553 prop_offset > 0;
554 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
555 const char *prop;
556 const char *name;
557 int len, val;
558
559 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
560 debug(" - %s, %s\n", name, prop);
561 if (*prop != '/' || prop[len - 1] ||
562 strncmp(name, base, base_len))
563 continue;
564
565 val = trailing_strtol(name);
566 if (val > max) {
567 debug("Found seq %d\n", val);
568 max = val;
569 }
570 }
571
572 return max;
573}
574
Simon Glass3bc37a52015-10-17 19:41:14 -0600575const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
576{
577 int chosen_node;
578
579 if (!blob)
580 return NULL;
581 chosen_node = fdt_path_offset(blob, "/chosen");
582 return fdt_getprop(blob, chosen_node, name, NULL);
583}
584
Simon Glassaac07d42014-09-04 16:27:24 -0600585int fdtdec_get_chosen_node(const void *blob, const char *name)
586{
587 const char *prop;
Simon Glassaac07d42014-09-04 16:27:24 -0600588
Simon Glass3bc37a52015-10-17 19:41:14 -0600589 prop = fdtdec_get_chosen_prop(blob, name);
Simon Glassaac07d42014-09-04 16:27:24 -0600590 if (!prop)
591 return -FDT_ERR_NOTFOUND;
592 return fdt_path_offset(blob, prop);
593}
594
Simon Glassb62d3492022-12-21 16:08:19 -0700595/**
596 * fdtdec_prepare_fdt() - Check we have a valid fdt available to control U-Boot
597 *
Simon Glassec4f3272022-12-21 16:08:20 -0700598 * @blob: Blob to check
599 *
Simon Glassb62d3492022-12-21 16:08:19 -0700600 * If not, a message is printed to the console if the console is ready.
601 *
602 * Return: 0 if all ok, -ENOENT if not
Simon Glassb5220bc2011-10-24 19:15:32 +0000603 */
Simon Glassec4f3272022-12-21 16:08:20 -0700604static int fdtdec_prepare_fdt(const void *blob)
Simon Glassb5220bc2011-10-24 19:15:32 +0000605{
Simon Glassec4f3272022-12-21 16:08:20 -0700606 if (!blob || ((uintptr_t)blob & 3) || fdt_check_header(blob)) {
Simon Glassb62d3492022-12-21 16:08:19 -0700607 if (spl_phase() <= PHASE_SPL) {
608 puts("Missing DTB\n");
609 } else {
610 printf("No valid device tree binary found at %p\n",
Simon Glassec4f3272022-12-21 16:08:20 -0700611 blob);
612 if (_DEBUG && blob) {
613 printf("fdt_blob=%p\n", blob);
614 print_buffer((ulong)blob, blob, 4, 32, 0);
Simon Glassb62d3492022-12-21 16:08:19 -0700615 }
Simon Glasscb5f97f702015-06-23 15:39:09 -0600616 }
Simon Glassb62d3492022-12-21 16:08:19 -0700617 return -ENOENT;
Simon Glass9a263e52012-03-28 10:08:24 +0000618 }
Simon Glassb62d3492022-12-21 16:08:19 -0700619
Simon Glassb5220bc2011-10-24 19:15:32 +0000620 return 0;
621}
Simon Glassd17da652012-02-27 10:52:35 +0000622
Simon Glassc662d0b2022-12-21 16:08:18 -0700623int fdtdec_check_fdt(void)
624{
625 /*
626 * We must have an FDT, but we cannot panic() yet since the console
627 * is not ready. So for now, just assert(). Boards which need an early
628 * FDT (prior to console ready) will need to make their own
629 * arrangements and do their own checks.
630 */
Simon Glassec4f3272022-12-21 16:08:20 -0700631 assert(!fdtdec_prepare_fdt(gd->fdt_blob));
Simon Glassc662d0b2022-12-21 16:08:18 -0700632 return 0;
633}
634
Simon Glassd17da652012-02-27 10:52:35 +0000635int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
636{
637 const u32 *phandle;
638 int lookup;
639
Simon Glass1cb23232012-07-12 05:25:01 +0000640 debug("%s: %s\n", __func__, prop_name);
Simon Glassd17da652012-02-27 10:52:35 +0000641 phandle = fdt_getprop(blob, node, prop_name, NULL);
642 if (!phandle)
643 return -FDT_ERR_NOTFOUND;
644
645 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
646 return lookup;
647}
648
649/**
650 * Look up a property in a node and check that it has a minimum length.
651 *
652 * @param blob FDT blob
653 * @param node node to examine
654 * @param prop_name name of property to find
655 * @param min_len minimum property length in bytes
656 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
657 found, or -FDT_ERR_BADLAYOUT if not enough data
Heinrich Schuchardt185f8122022-01-19 18:05:50 +0100658 * Return: pointer to cell, which is only valid if err == 0
Simon Glassd17da652012-02-27 10:52:35 +0000659 */
660static const void *get_prop_check_min_len(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100661 const char *prop_name, int min_len,
662 int *err)
Simon Glassd17da652012-02-27 10:52:35 +0000663{
664 const void *cell;
665 int len;
666
667 debug("%s: %s\n", __func__, prop_name);
668 cell = fdt_getprop(blob, node, prop_name, &len);
669 if (!cell)
670 *err = -FDT_ERR_NOTFOUND;
671 else if (len < min_len)
672 *err = -FDT_ERR_BADLAYOUT;
673 else
674 *err = 0;
675 return cell;
676}
677
678int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100679 u32 *array, int count)
Simon Glassd17da652012-02-27 10:52:35 +0000680{
681 const u32 *cell;
Mario Sixb79221a2018-01-15 11:07:36 +0100682 int err = 0;
Simon Glassd17da652012-02-27 10:52:35 +0000683
684 debug("%s: %s\n", __func__, prop_name);
685 cell = get_prop_check_min_len(blob, node, prop_name,
686 sizeof(u32) * count, &err);
687 if (!err) {
Mario Sixb79221a2018-01-15 11:07:36 +0100688 int i;
689
Simon Glassd17da652012-02-27 10:52:35 +0000690 for (i = 0; i < count; i++)
691 array[i] = fdt32_to_cpu(cell[i]);
692 }
693 return err;
694}
695
Simon Glassa9f04d42014-11-10 18:00:19 -0700696int fdtdec_get_int_array_count(const void *blob, int node,
697 const char *prop_name, u32 *array, int count)
698{
699 const u32 *cell;
700 int len, elems;
701 int i;
702
703 debug("%s: %s\n", __func__, prop_name);
704 cell = fdt_getprop(blob, node, prop_name, &len);
705 if (!cell)
706 return -FDT_ERR_NOTFOUND;
707 elems = len / sizeof(u32);
708 if (count > elems)
709 count = elems;
710 for (i = 0; i < count; i++)
711 array[i] = fdt32_to_cpu(cell[i]);
712
713 return count;
714}
715
Simon Glass96875e72012-04-02 13:18:41 +0000716const u32 *fdtdec_locate_array(const void *blob, int node,
717 const char *prop_name, int count)
718{
719 const u32 *cell;
720 int err;
721
722 cell = get_prop_check_min_len(blob, node, prop_name,
723 sizeof(u32) * count, &err);
724 return err ? NULL : cell;
725}
726
Simon Glassd17da652012-02-27 10:52:35 +0000727int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
728{
729 const s32 *cell;
730 int len;
731
732 debug("%s: %s\n", __func__, prop_name);
733 cell = fdt_getprop(blob, node, prop_name, &len);
734 return cell != NULL;
735}
Simon Glassed3ee5c2012-02-27 10:52:36 +0000736
Simon Glass57068a72015-01-05 20:05:26 -0700737int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
738 const char *list_name,
739 const char *cells_name,
740 int cell_count, int index,
741 struct fdtdec_phandle_args *out_args)
742{
743 const __be32 *list, *list_end;
744 int rc = 0, size, cur_index = 0;
745 uint32_t count = 0;
746 int node = -1;
747 int phandle;
748
749 /* Retrieve the phandle list property */
750 list = fdt_getprop(blob, src_node, list_name, &size);
751 if (!list)
752 return -ENOENT;
753 list_end = list + size / sizeof(*list);
754
755 /* Loop over the phandles until all the requested entry is found */
756 while (list < list_end) {
757 rc = -EINVAL;
758 count = 0;
759
760 /*
761 * If phandle is 0, then it is an empty entry with no
762 * arguments. Skip forward to the next entry.
763 */
764 phandle = be32_to_cpup(list++);
765 if (phandle) {
766 /*
767 * Find the provider node and parse the #*-cells
768 * property to determine the argument length.
769 *
770 * This is not needed if the cell count is hard-coded
771 * (i.e. cells_name not set, but cell_count is set),
772 * except when we're going to return the found node
773 * below.
774 */
775 if (cells_name || cur_index == index) {
776 node = fdt_node_offset_by_phandle(blob,
777 phandle);
Patrick Delaunaycba487c2020-09-25 09:41:15 +0200778 if (node < 0) {
Simon Glass57068a72015-01-05 20:05:26 -0700779 debug("%s: could not find phandle\n",
780 fdt_get_name(blob, src_node,
781 NULL));
782 goto err;
783 }
784 }
785
786 if (cells_name) {
787 count = fdtdec_get_int(blob, node, cells_name,
788 -1);
789 if (count == -1) {
790 debug("%s: could not get %s for %s\n",
791 fdt_get_name(blob, src_node,
792 NULL),
793 cells_name,
794 fdt_get_name(blob, node,
795 NULL));
796 goto err;
797 }
798 } else {
799 count = cell_count;
800 }
801
802 /*
803 * Make sure that the arguments actually fit in the
804 * remaining property data length
805 */
806 if (list + count > list_end) {
807 debug("%s: arguments longer than property\n",
808 fdt_get_name(blob, src_node, NULL));
809 goto err;
810 }
811 }
812
813 /*
814 * All of the error cases above bail out of the loop, so at
815 * this point, the parsing is successful. If the requested
816 * index matches, then fill the out_args structure and return,
817 * or return -ENOENT for an empty entry.
818 */
819 rc = -ENOENT;
820 if (cur_index == index) {
821 if (!phandle)
822 goto err;
823
824 if (out_args) {
825 int i;
826
827 if (count > MAX_PHANDLE_ARGS) {
828 debug("%s: too many arguments %d\n",
829 fdt_get_name(blob, src_node,
830 NULL), count);
831 count = MAX_PHANDLE_ARGS;
832 }
833 out_args->node = node;
834 out_args->args_count = count;
835 for (i = 0; i < count; i++) {
836 out_args->args[i] =
837 be32_to_cpup(list++);
838 }
839 }
840
841 /* Found it! return success */
842 return 0;
843 }
844
845 node = -1;
846 list += count;
847 cur_index++;
848 }
849
850 /*
851 * Result will be one of:
852 * -ENOENT : index is for empty phandle
853 * -EINVAL : parsing error on data
854 * [1..n] : Number of phandle (count mode; when index = -1)
855 */
856 rc = index < 0 ? cur_index : -ENOENT;
857 err:
858 return rc;
859}
860
Anton Staffbed4d892012-04-17 09:01:28 +0000861int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100862 u8 *array, int count)
Anton Staffbed4d892012-04-17 09:01:28 +0000863{
864 const u8 *cell;
865 int err;
866
867 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
868 if (!err)
869 memcpy(array, cell, count);
870 return err;
871}
872
873const u8 *fdtdec_locate_byte_array(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100874 const char *prop_name, int count)
Anton Staffbed4d892012-04-17 09:01:28 +0000875{
876 const u8 *cell;
877 int err;
878
879 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
880 if (err)
881 return NULL;
882 return cell;
883}
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000884
Simon Glass5f7bfdd2015-03-05 12:25:14 -0700885u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
Thierry Reding56f42242014-08-26 17:33:53 +0200886{
887 u64 number = 0;
888
889 while (cells--)
890 number = (number << 32) | fdt32_to_cpu(*ptr++);
891
892 return number;
893}
894
895int fdt_get_resource(const void *fdt, int node, const char *property,
896 unsigned int index, struct fdt_resource *res)
897{
898 const fdt32_t *ptr, *end;
899 int na, ns, len, parent;
900 unsigned int i = 0;
901
902 parent = fdt_parent_offset(fdt, node);
903 if (parent < 0)
904 return parent;
905
906 na = fdt_address_cells(fdt, parent);
907 ns = fdt_size_cells(fdt, parent);
908
909 ptr = fdt_getprop(fdt, node, property, &len);
910 if (!ptr)
911 return len;
912
913 end = ptr + len / sizeof(*ptr);
914
915 while (ptr + na + ns <= end) {
916 if (i == index) {
Patrick Delaunayfeb7ac42021-04-06 09:38:06 +0200917 if (CONFIG_IS_ENABLED(OF_TRANSLATE))
918 res->start = fdt_translate_address(fdt, node, ptr);
919 else
920 res->start = fdtdec_get_number(ptr, na);
921
Mario Sixb79221a2018-01-15 11:07:36 +0100922 res->end = res->start;
Thierry Reding56f42242014-08-26 17:33:53 +0200923 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
924 return 0;
925 }
926
927 ptr += na + ns;
928 i++;
929 }
930
931 return -FDT_ERR_NOTFOUND;
932}
933
934int fdt_get_named_resource(const void *fdt, int node, const char *property,
935 const char *prop_names, const char *name,
936 struct fdt_resource *res)
937{
938 int index;
939
Simon Glassb02e4042016-10-02 17:59:28 -0600940 index = fdt_stringlist_search(fdt, node, prop_names, name);
Thierry Reding56f42242014-08-26 17:33:53 +0200941 if (index < 0)
942 return index;
943
944 return fdt_get_resource(fdt, node, property, index, res);
945}
Thierry Reding9f85eee2014-08-26 17:33:54 +0200946
Simon Glass12e67112015-04-14 21:03:21 -0600947static int decode_timing_property(const void *blob, int node, const char *name,
948 struct timing_entry *result)
949{
950 int length, ret = 0;
951 const u32 *prop;
952
953 prop = fdt_getprop(blob, node, name, &length);
954 if (!prop) {
955 debug("%s: could not find property %s\n",
956 fdt_get_name(blob, node, NULL), name);
957 return length;
958 }
959
960 if (length == sizeof(u32)) {
961 result->typ = fdtdec_get_int(blob, node, name, 0);
962 result->min = result->typ;
963 result->max = result->typ;
964 } else {
965 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
966 }
967
968 return ret;
969}
970
971int fdtdec_decode_display_timing(const void *blob, int parent, int index,
972 struct display_timing *dt)
973{
974 int i, node, timings_node;
975 u32 val = 0;
976 int ret = 0;
977
978 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
979 if (timings_node < 0)
980 return timings_node;
981
982 for (i = 0, node = fdt_first_subnode(blob, timings_node);
983 node > 0 && i != index;
984 node = fdt_next_subnode(blob, node))
985 i++;
986
987 if (node < 0)
988 return node;
989
990 memset(dt, 0, sizeof(*dt));
991
992 ret |= decode_timing_property(blob, node, "hback-porch",
993 &dt->hback_porch);
994 ret |= decode_timing_property(blob, node, "hfront-porch",
995 &dt->hfront_porch);
996 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
997 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
998 ret |= decode_timing_property(blob, node, "vback-porch",
999 &dt->vback_porch);
1000 ret |= decode_timing_property(blob, node, "vfront-porch",
1001 &dt->vfront_porch);
1002 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
1003 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
1004 ret |= decode_timing_property(blob, node, "clock-frequency",
1005 &dt->pixelclock);
1006
1007 dt->flags = 0;
1008 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1009 if (val != -1) {
1010 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1011 DISPLAY_FLAGS_VSYNC_LOW;
1012 }
1013 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1014 if (val != -1) {
1015 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1016 DISPLAY_FLAGS_HSYNC_LOW;
1017 }
1018 val = fdtdec_get_int(blob, node, "de-active", -1);
1019 if (val != -1) {
1020 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1021 DISPLAY_FLAGS_DE_LOW;
1022 }
1023 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1024 if (val != -1) {
1025 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1026 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1027 }
1028
1029 if (fdtdec_get_bool(blob, node, "interlaced"))
1030 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1031 if (fdtdec_get_bool(blob, node, "doublescan"))
1032 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1033 if (fdtdec_get_bool(blob, node, "doubleclk"))
1034 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1035
Simon Glass04b9dd12016-05-05 07:28:21 -06001036 return ret;
Simon Glass12e67112015-04-14 21:03:21 -06001037}
1038
Michal Simek50c7b722020-07-10 13:16:50 +02001039int fdtdec_setup_mem_size_base(void)
Nathan Rossi623f6012016-12-19 00:03:34 +10001040{
Michal Simekc2f09502020-07-10 13:34:44 +02001041 int ret;
1042 ofnode mem;
1043 struct resource res;
Nathan Rossi623f6012016-12-19 00:03:34 +10001044
Michal Simekc2f09502020-07-10 13:34:44 +02001045 mem = ofnode_path("/memory");
1046 if (!ofnode_valid(mem)) {
Nathan Rossi623f6012016-12-19 00:03:34 +10001047 debug("%s: Missing /memory node\n", __func__);
1048 return -EINVAL;
1049 }
1050
Michal Simekc2f09502020-07-10 13:34:44 +02001051 ret = ofnode_read_resource(mem, 0, &res);
Nathan Rossi623f6012016-12-19 00:03:34 +10001052 if (ret != 0) {
1053 debug("%s: Unable to decode first memory bank\n", __func__);
1054 return -EINVAL;
1055 }
1056
1057 gd->ram_size = (phys_size_t)(res.end - res.start + 1);
Siva Durga Prasad Paladugu1473b122018-07-16 15:56:10 +05301058 gd->ram_base = (unsigned long)res.start;
Simon Glassc69380f2017-05-27 07:38:13 -06001059 debug("%s: Initial DRAM size %llx\n", __func__,
1060 (unsigned long long)gd->ram_size);
Nathan Rossi623f6012016-12-19 00:03:34 +10001061
1062 return 0;
1063}
1064
Michal Simekc2f09502020-07-10 13:34:44 +02001065ofnode get_next_memory_node(ofnode mem)
Jens Wiklander452bc122018-07-13 12:12:11 +02001066{
Jens Wiklander452bc122018-07-13 12:12:11 +02001067 do {
Michal Simekc2f09502020-07-10 13:34:44 +02001068 mem = ofnode_by_prop_value(mem, "device_type", "memory", 7);
Simon Glass89090662022-09-06 20:27:17 -06001069 } while (!ofnode_is_enabled(mem));
Jens Wiklander452bc122018-07-13 12:12:11 +02001070
1071 return mem;
1072}
1073
Michal Simek62897c42020-07-10 13:16:49 +02001074int fdtdec_setup_memory_banksize(void)
Nathan Rossi623f6012016-12-19 00:03:34 +10001075{
Michal Simekc2f09502020-07-10 13:34:44 +02001076 int bank, ret, reg = 0;
1077 struct resource res;
1078 ofnode mem = ofnode_null();
Nathan Rossi623f6012016-12-19 00:03:34 +10001079
Michal Simekc2f09502020-07-10 13:34:44 +02001080 mem = get_next_memory_node(mem);
1081 if (!ofnode_valid(mem)) {
Michal Simek658954c2018-10-03 15:53:52 +02001082 debug("%s: Missing /memory node\n", __func__);
1083 return -EINVAL;
1084 }
Nathan Rossi623f6012016-12-19 00:03:34 +10001085
1086 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
Michal Simekc2f09502020-07-10 13:34:44 +02001087 ret = ofnode_read_resource(mem, reg++, &res);
1088 if (ret < 0) {
Marek Vasut942ee092017-11-27 05:32:42 +01001089 reg = 0;
Michal Simekc2f09502020-07-10 13:34:44 +02001090 mem = get_next_memory_node(mem);
Marek Vasut81d0cef2020-09-12 12:42:52 +02001091 if (!ofnode_valid(mem))
Michal Simek658954c2018-10-03 15:53:52 +02001092 break;
1093
Michal Simekc2f09502020-07-10 13:34:44 +02001094 ret = ofnode_read_resource(mem, reg++, &res);
1095 if (ret < 0)
Michal Simek658954c2018-10-03 15:53:52 +02001096 break;
1097 }
Michal Simekc2f09502020-07-10 13:34:44 +02001098
1099 if (ret != 0)
Michal Simek658954c2018-10-03 15:53:52 +02001100 return -EINVAL;
Nathan Rossi623f6012016-12-19 00:03:34 +10001101
1102 gd->bd->bi_dram[bank].start = (phys_addr_t)res.start;
1103 gd->bd->bi_dram[bank].size =
1104 (phys_size_t)(res.end - res.start + 1);
1105
1106 debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
1107 __func__, bank,
1108 (unsigned long long)gd->bd->bi_dram[bank].start,
1109 (unsigned long long)gd->bd->bi_dram[bank].size);
1110 }
1111
1112 return 0;
1113}
Michal Simek7fce7392020-07-09 14:09:52 +02001114
1115int fdtdec_setup_mem_size_base_lowest(void)
1116{
Michal Simekc2f09502020-07-10 13:34:44 +02001117 int bank, ret, reg = 0;
1118 struct resource res;
Michal Simek7fce7392020-07-09 14:09:52 +02001119 unsigned long base;
1120 phys_size_t size;
Michal Simekc2f09502020-07-10 13:34:44 +02001121 ofnode mem = ofnode_null();
Michal Simek7fce7392020-07-09 14:09:52 +02001122
1123 gd->ram_base = (unsigned long)~0;
1124
Michal Simekc2f09502020-07-10 13:34:44 +02001125 mem = get_next_memory_node(mem);
1126 if (!ofnode_valid(mem)) {
Michal Simek7fce7392020-07-09 14:09:52 +02001127 debug("%s: Missing /memory node\n", __func__);
1128 return -EINVAL;
1129 }
1130
1131 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
Michal Simekc2f09502020-07-10 13:34:44 +02001132 ret = ofnode_read_resource(mem, reg++, &res);
1133 if (ret < 0) {
Michal Simek7fce7392020-07-09 14:09:52 +02001134 reg = 0;
Michal Simekc2f09502020-07-10 13:34:44 +02001135 mem = get_next_memory_node(mem);
Marek Vasut81d0cef2020-09-12 12:42:52 +02001136 if (!ofnode_valid(mem))
Michal Simek7fce7392020-07-09 14:09:52 +02001137 break;
1138
Michal Simekc2f09502020-07-10 13:34:44 +02001139 ret = ofnode_read_resource(mem, reg++, &res);
1140 if (ret < 0)
Michal Simek7fce7392020-07-09 14:09:52 +02001141 break;
1142 }
Michal Simekc2f09502020-07-10 13:34:44 +02001143
Michal Simek7fce7392020-07-09 14:09:52 +02001144 if (ret != 0)
1145 return -EINVAL;
1146
1147 base = (unsigned long)res.start;
1148 size = (phys_size_t)(res.end - res.start + 1);
1149
1150 if (gd->ram_base > base && size) {
1151 gd->ram_base = base;
1152 gd->ram_size = size;
1153 debug("%s: Initial DRAM base %lx size %lx\n",
1154 __func__, base, (unsigned long)size);
1155 }
1156 }
1157
1158 return 0;
1159}
Nathan Rossi623f6012016-12-19 00:03:34 +10001160
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001161static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1162{
Simon Glassb4b6daf2021-12-16 20:59:25 -07001163#if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\
1164 CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO)
Marek Vasut95f4bbd2019-03-08 16:06:55 +01001165 size_t sz_out = CONFIG_VAL(MULTI_DTB_FIT_UNCOMPRESS_SZ);
Marek Vasut1fd30352019-03-13 21:11:22 +01001166 bool gzip = 0, lzo = 0;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001167 ulong sz_in = sz_src;
1168 void *dst;
1169 int rc;
1170
1171 if (CONFIG_IS_ENABLED(GZIP))
Marek Vasut1fd30352019-03-13 21:11:22 +01001172 if (gzip_parse_header(src, sz_in) >= 0)
1173 gzip = 1;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001174 if (CONFIG_IS_ENABLED(LZO))
Marek Vasut1fd30352019-03-13 21:11:22 +01001175 if (!gzip && lzop_is_valid_header(src))
1176 lzo = 1;
1177
1178 if (!gzip && !lzo)
1179 return -EBADMSG;
1180
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001181
1182 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) {
1183 dst = malloc(sz_out);
1184 if (!dst) {
1185 puts("uncompress_blob: Unable to allocate memory\n");
1186 return -ENOMEM;
1187 }
1188 } else {
Simon Glassb4b6daf2021-12-16 20:59:25 -07001189# if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001190 dst = (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR);
Simon Glassb4b6daf2021-12-16 20:59:25 -07001191# else
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001192 return -ENOTSUPP;
Simon Glassb4b6daf2021-12-16 20:59:25 -07001193# endif
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001194 }
1195
Marek Vasut1fd30352019-03-13 21:11:22 +01001196 if (CONFIG_IS_ENABLED(GZIP) && gzip)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001197 rc = gunzip(dst, sz_out, (u8 *)src, &sz_in);
Marek Vasut1fd30352019-03-13 21:11:22 +01001198 else if (CONFIG_IS_ENABLED(LZO) && lzo)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001199 rc = lzop_decompress(src, sz_in, dst, &sz_out);
Marek Vasut1fd30352019-03-13 21:11:22 +01001200 else
1201 hang();
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001202
1203 if (rc < 0) {
1204 /* not a valid compressed blob */
1205 puts("uncompress_blob: Unable to uncompress\n");
1206 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC))
1207 free(dst);
1208 return -EBADMSG;
1209 }
1210 *dstp = dst;
Simon Glassb4b6daf2021-12-16 20:59:25 -07001211#else
Marek Vasut410d9b62018-10-18 20:37:05 +02001212 *dstp = (void *)src;
Simon Glassb4b6daf2021-12-16 20:59:25 -07001213 *dstp = (void *)src;
1214#endif
Marek Vasut410d9b62018-10-18 20:37:05 +02001215 return 0;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001216}
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001217
Simon Glass98550342021-12-16 20:59:31 -07001218/**
1219 * fdt_find_separate() - Find a devicetree at the end of the image
1220 *
Heinrich Schuchardt185f8122022-01-19 18:05:50 +01001221 * Return: pointer to FDT blob
Rob Clark3b595da2018-01-10 11:34:37 +01001222 */
Simon Glass98550342021-12-16 20:59:31 -07001223static void *fdt_find_separate(void)
Rob Clark3b595da2018-01-10 11:34:37 +01001224{
1225 void *fdt_blob = NULL;
Ilias Apalodimase7fb7892021-10-26 09:12:33 +03001226
Simon Glass423cf0a2022-02-28 12:08:24 -07001227 if (IS_ENABLED(CONFIG_SANDBOX))
1228 return NULL;
1229
Rob Clark3b595da2018-01-10 11:34:37 +01001230#ifdef CONFIG_SPL_BUILD
1231 /* FDT is at end of BSS unless it is in a different memory region */
Andrew Abbott0de71bb2022-04-16 10:12:31 +10001232 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
Rob Clark3b595da2018-01-10 11:34:37 +01001233 fdt_blob = (ulong *)&_image_binary_end;
1234 else
1235 fdt_blob = (ulong *)&__bss_end;
1236#else
1237 /* FDT is at end of image */
1238 fdt_blob = (ulong *)&_end;
Simon Glass95575922022-12-21 16:08:21 -07001239
1240 if (_DEBUG && !fdtdec_prepare_fdt(fdt_blob)) {
1241 int stack_ptr;
1242 const void *top = fdt_blob + fdt_totalsize(fdt_blob);
1243
1244 /*
1245 * Perform a sanity check on the memory layout. If this fails,
1246 * it indicates that the device tree is positioned above the
1247 * global data pointer or the stack pointer. This should not
1248 * happen.
1249 *
1250 * If this fails, check that SYS_INIT_SP_ADDR has enough space
1251 * below it for SYS_MALLOC_F_LEN and global_data, as well as the
1252 * stack, without overwriting the device tree or U-Boot itself.
1253 * Since the device tree is sitting at _end (the start of the
1254 * BSS region), we need the top of the device tree to be below
1255 * any memory allocated by board_init_f_alloc_reserve().
1256 */
1257 if (top > (void *)gd || top > (void *)&stack_ptr) {
1258 printf("FDT %p gd %p\n", fdt_blob, gd);
1259 panic("FDT overlap");
1260 }
1261 }
Rob Clark3b595da2018-01-10 11:34:37 +01001262#endif
Ilias Apalodimase7fb7892021-10-26 09:12:33 +03001263
Rob Clark3b595da2018-01-10 11:34:37 +01001264 return fdt_blob;
1265}
Rob Clark3b595da2018-01-10 11:34:37 +01001266
Thierry Redingebf30e82019-04-15 11:32:13 +02001267int fdtdec_set_ethernet_mac_address(void *fdt, const u8 *mac, size_t size)
1268{
1269 const char *path;
1270 int offset, err;
1271
1272 if (!is_valid_ethaddr(mac))
1273 return -EINVAL;
1274
1275 path = fdt_get_alias(fdt, "ethernet");
1276 if (!path)
1277 return 0;
1278
1279 debug("ethernet alias found: %s\n", path);
1280
1281 offset = fdt_path_offset(fdt, path);
1282 if (offset < 0) {
1283 debug("ethernet alias points to absent node %s\n", path);
1284 return -ENOENT;
1285 }
1286
1287 err = fdt_setprop_inplace(fdt, offset, "local-mac-address", mac, size);
1288 if (err < 0)
1289 return err;
1290
1291 debug("MAC address: %pM\n", mac);
1292
1293 return 0;
1294}
1295
Thierry Redingc9222a02019-03-21 19:10:02 +01001296static int fdtdec_init_reserved_memory(void *blob)
1297{
1298 int na, ns, node, err;
1299 fdt32_t value;
1300
1301 /* inherit #address-cells and #size-cells from the root node */
1302 na = fdt_address_cells(blob, 0);
1303 ns = fdt_size_cells(blob, 0);
1304
1305 node = fdt_add_subnode(blob, 0, "reserved-memory");
1306 if (node < 0)
1307 return node;
1308
1309 err = fdt_setprop(blob, node, "ranges", NULL, 0);
1310 if (err < 0)
1311 return err;
1312
1313 value = cpu_to_fdt32(ns);
1314
1315 err = fdt_setprop(blob, node, "#size-cells", &value, sizeof(value));
1316 if (err < 0)
1317 return err;
1318
1319 value = cpu_to_fdt32(na);
1320
1321 err = fdt_setprop(blob, node, "#address-cells", &value, sizeof(value));
1322 if (err < 0)
1323 return err;
1324
1325 return node;
1326}
1327
1328int fdtdec_add_reserved_memory(void *blob, const char *basename,
1329 const struct fdt_memory *carveout,
Thierry Reding46cb0672021-09-03 15:16:19 +02001330 const char **compatibles, unsigned int count,
Thierry Redingb9aad372021-09-03 15:16:21 +02001331 uint32_t *phandlep, unsigned long flags)
Thierry Redingc9222a02019-03-21 19:10:02 +01001332{
1333 fdt32_t cells[4] = {}, *ptr = cells;
1334 uint32_t upper, lower, phandle;
1335 int parent, node, na, ns, err;
Thierry Reding3bf2f152019-04-15 10:08:21 +02001336 fdt_size_t size;
Thierry Redingc9222a02019-03-21 19:10:02 +01001337 char name[64];
1338
1339 /* create an empty /reserved-memory node if one doesn't exist */
1340 parent = fdt_path_offset(blob, "/reserved-memory");
1341 if (parent < 0) {
1342 parent = fdtdec_init_reserved_memory(blob);
1343 if (parent < 0)
1344 return parent;
1345 }
1346
1347 /* only 1 or 2 #address-cells and #size-cells are supported */
1348 na = fdt_address_cells(blob, parent);
1349 if (na < 1 || na > 2)
1350 return -FDT_ERR_BADNCELLS;
1351
1352 ns = fdt_size_cells(blob, parent);
1353 if (ns < 1 || ns > 2)
1354 return -FDT_ERR_BADNCELLS;
1355
1356 /* find a matching node and return the phandle to that */
1357 fdt_for_each_subnode(node, blob, parent) {
1358 const char *name = fdt_get_name(blob, node, NULL);
Bin Menga9ad1132020-05-19 23:38:32 -07001359 fdt_addr_t addr;
1360 fdt_size_t size;
Thierry Redingc9222a02019-03-21 19:10:02 +01001361
Bin Mengf6704c72020-05-19 23:38:33 -07001362 addr = fdtdec_get_addr_size_fixed(blob, node, "reg", 0, na, ns,
1363 &size, false);
Thierry Redingc9222a02019-03-21 19:10:02 +01001364 if (addr == FDT_ADDR_T_NONE) {
1365 debug("failed to read address/size for %s\n", name);
1366 continue;
1367 }
1368
Atish Patraf6147532020-04-21 11:15:00 -07001369 if (addr == carveout->start && (addr + size - 1) ==
1370 carveout->end) {
Heiko Stuebner086336a2019-10-23 16:46:38 +02001371 if (phandlep)
1372 *phandlep = fdt_get_phandle(blob, node);
Thierry Redingc9222a02019-03-21 19:10:02 +01001373 return 0;
1374 }
1375 }
1376
1377 /*
1378 * Unpack the start address and generate the name of the new node
1379 * base on the basename and the unit-address.
1380 */
Thierry Reding3bf2f152019-04-15 10:08:21 +02001381 upper = upper_32_bits(carveout->start);
1382 lower = lower_32_bits(carveout->start);
Thierry Redingc9222a02019-03-21 19:10:02 +01001383
1384 if (na > 1 && upper > 0)
1385 snprintf(name, sizeof(name), "%s@%x,%x", basename, upper,
1386 lower);
1387 else {
1388 if (upper > 0) {
1389 debug("address %08x:%08x exceeds addressable space\n",
1390 upper, lower);
1391 return -FDT_ERR_BADVALUE;
1392 }
1393
1394 snprintf(name, sizeof(name), "%s@%x", basename, lower);
1395 }
1396
1397 node = fdt_add_subnode(blob, parent, name);
1398 if (node < 0)
1399 return node;
1400
Thierry Redingb9aad372021-09-03 15:16:21 +02001401 if (flags & FDTDEC_RESERVED_MEMORY_NO_MAP) {
1402 err = fdt_setprop(blob, node, "no-map", NULL, 0);
1403 if (err < 0)
1404 return err;
1405 }
1406
Heiko Stuebner357d2ce2019-10-23 16:46:39 +02001407 if (phandlep) {
1408 err = fdt_generate_phandle(blob, &phandle);
1409 if (err < 0)
1410 return err;
Thierry Redingc9222a02019-03-21 19:10:02 +01001411
Heiko Stuebner357d2ce2019-10-23 16:46:39 +02001412 err = fdtdec_set_phandle(blob, node, phandle);
1413 if (err < 0)
1414 return err;
1415 }
Thierry Redingc9222a02019-03-21 19:10:02 +01001416
1417 /* store one or two address cells */
1418 if (na > 1)
1419 *ptr++ = cpu_to_fdt32(upper);
1420
1421 *ptr++ = cpu_to_fdt32(lower);
1422
1423 /* store one or two size cells */
Thierry Reding3bf2f152019-04-15 10:08:21 +02001424 size = carveout->end - carveout->start + 1;
1425 upper = upper_32_bits(size);
1426 lower = lower_32_bits(size);
Thierry Redingc9222a02019-03-21 19:10:02 +01001427
1428 if (ns > 1)
1429 *ptr++ = cpu_to_fdt32(upper);
1430
1431 *ptr++ = cpu_to_fdt32(lower);
1432
1433 err = fdt_setprop(blob, node, "reg", cells, (na + ns) * sizeof(*cells));
1434 if (err < 0)
1435 return err;
1436
Thierry Reding46cb0672021-09-03 15:16:19 +02001437 if (compatibles && count > 0) {
1438 size_t length = 0, len = 0;
1439 unsigned int i;
1440 char *buffer;
1441
1442 for (i = 0; i < count; i++)
1443 length += strlen(compatibles[i]) + 1;
1444
1445 buffer = malloc(length);
1446 if (!buffer)
1447 return -FDT_ERR_INTERNAL;
1448
1449 for (i = 0; i < count; i++)
1450 len += strlcpy(buffer + len, compatibles[i],
1451 length - len) + 1;
1452
1453 err = fdt_setprop(blob, node, "compatible", buffer, length);
1454 free(buffer);
1455 if (err < 0)
1456 return err;
1457 }
1458
Thierry Redingc9222a02019-03-21 19:10:02 +01001459 /* return the phandle for the new node for the caller to use */
1460 if (phandlep)
1461 *phandlep = phandle;
1462
1463 return 0;
1464}
1465
Thierry Reding4bf88ba2021-09-03 15:16:18 +02001466int fdtdec_get_carveout(const void *blob, const char *node,
1467 const char *prop_name, unsigned int index,
Thierry Reding46cb0672021-09-03 15:16:19 +02001468 struct fdt_memory *carveout, const char **name,
Thierry Redingb9aad372021-09-03 15:16:21 +02001469 const char ***compatiblesp, unsigned int *countp,
1470 unsigned long *flags)
Thierry Reding16523ac2019-03-21 19:10:03 +01001471{
1472 const fdt32_t *prop;
1473 uint32_t phandle;
1474 int offset, len;
1475 fdt_size_t size;
1476
1477 offset = fdt_path_offset(blob, node);
1478 if (offset < 0)
1479 return offset;
1480
Thierry Reding4bf88ba2021-09-03 15:16:18 +02001481 prop = fdt_getprop(blob, offset, prop_name, &len);
Thierry Reding16523ac2019-03-21 19:10:03 +01001482 if (!prop) {
Thierry Reding4bf88ba2021-09-03 15:16:18 +02001483 debug("failed to get %s for %s\n", prop_name, node);
Thierry Reding16523ac2019-03-21 19:10:03 +01001484 return -FDT_ERR_NOTFOUND;
1485 }
1486
1487 if ((len % sizeof(phandle)) != 0) {
1488 debug("invalid phandle property\n");
1489 return -FDT_ERR_BADPHANDLE;
1490 }
1491
1492 if (len < (sizeof(phandle) * (index + 1))) {
1493 debug("invalid phandle index\n");
Thierry Redingd5598cf2021-09-03 15:16:17 +02001494 return -FDT_ERR_NOTFOUND;
Thierry Reding16523ac2019-03-21 19:10:03 +01001495 }
1496
1497 phandle = fdt32_to_cpu(prop[index]);
1498
1499 offset = fdt_node_offset_by_phandle(blob, phandle);
1500 if (offset < 0) {
1501 debug("failed to find node for phandle %u\n", phandle);
1502 return offset;
1503 }
1504
Thierry Reding4bf88ba2021-09-03 15:16:18 +02001505 if (name)
1506 *name = fdt_get_name(blob, offset, NULL);
1507
Thierry Reding46cb0672021-09-03 15:16:19 +02001508 if (compatiblesp) {
1509 const char **compatibles = NULL;
1510 const char *start, *end, *ptr;
1511 unsigned int count = 0;
1512
1513 prop = fdt_getprop(blob, offset, "compatible", &len);
1514 if (!prop)
1515 goto skip_compat;
1516
1517 start = ptr = (const char *)prop;
1518 end = start + len;
1519
1520 while (ptr < end) {
1521 ptr = strchrnul(ptr, '\0');
1522 count++;
1523 ptr++;
1524 }
1525
1526 compatibles = malloc(sizeof(ptr) * count);
1527 if (!compatibles)
1528 return -FDT_ERR_INTERNAL;
1529
1530 ptr = start;
1531 count = 0;
1532
1533 while (ptr < end) {
1534 compatibles[count] = ptr;
1535 ptr = strchrnul(ptr, '\0');
1536 count++;
1537 ptr++;
1538 }
1539
1540skip_compat:
1541 *compatiblesp = compatibles;
1542
1543 if (countp)
1544 *countp = count;
1545 }
1546
Thierry Reding16523ac2019-03-21 19:10:03 +01001547 carveout->start = fdtdec_get_addr_size_auto_noparent(blob, offset,
1548 "reg", 0, &size,
1549 true);
1550 if (carveout->start == FDT_ADDR_T_NONE) {
1551 debug("failed to read address/size from \"reg\" property\n");
1552 return -FDT_ERR_NOTFOUND;
1553 }
1554
1555 carveout->end = carveout->start + size - 1;
1556
Thierry Redingb9aad372021-09-03 15:16:21 +02001557 if (flags) {
1558 *flags = 0;
1559
1560 if (fdtdec_get_bool(blob, offset, "no-map"))
1561 *flags |= FDTDEC_RESERVED_MEMORY_NO_MAP;
1562 }
1563
Thierry Reding16523ac2019-03-21 19:10:03 +01001564 return 0;
1565}
1566
1567int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name,
Thierry Reding90194872021-09-03 15:16:20 +02001568 unsigned int index, const struct fdt_memory *carveout,
1569 const char *name, const char **compatibles,
Thierry Redingb9aad372021-09-03 15:16:21 +02001570 unsigned int count, unsigned long flags)
Thierry Reding16523ac2019-03-21 19:10:03 +01001571{
1572 uint32_t phandle;
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001573 int err, offset, len;
Thierry Reding16523ac2019-03-21 19:10:03 +01001574 fdt32_t value;
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001575 void *prop;
Thierry Reding16523ac2019-03-21 19:10:03 +01001576
Thierry Reding46cb0672021-09-03 15:16:19 +02001577 err = fdtdec_add_reserved_memory(blob, name, carveout, compatibles,
Thierry Redingb9aad372021-09-03 15:16:21 +02001578 count, &phandle, flags);
Thierry Reding16523ac2019-03-21 19:10:03 +01001579 if (err < 0) {
1580 debug("failed to add reserved memory: %d\n", err);
1581 return err;
1582 }
1583
1584 offset = fdt_path_offset(blob, node);
1585 if (offset < 0) {
1586 debug("failed to find offset for node %s: %d\n", node, offset);
1587 return offset;
1588 }
1589
1590 value = cpu_to_fdt32(phandle);
1591
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001592 if (!fdt_getprop(blob, offset, prop_name, &len)) {
1593 if (len == -FDT_ERR_NOTFOUND)
1594 len = 0;
1595 else
1596 return len;
1597 }
1598
1599 if ((index + 1) * sizeof(value) > len) {
1600 err = fdt_setprop_placeholder(blob, offset, prop_name,
1601 (index + 1) * sizeof(value),
1602 &prop);
1603 if (err < 0) {
1604 debug("failed to resize reserved memory property: %s\n",
1605 fdt_strerror(err));
1606 return err;
1607 }
1608 }
1609
1610 err = fdt_setprop_inplace_namelen_partial(blob, offset, prop_name,
1611 strlen(prop_name),
1612 index * sizeof(value),
1613 &value, sizeof(value));
Thierry Reding16523ac2019-03-21 19:10:03 +01001614 if (err < 0) {
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001615 debug("failed to update %s property for node %s: %s\n",
1616 prop_name, node, fdt_strerror(err));
Thierry Reding16523ac2019-03-21 19:10:03 +01001617 return err;
1618 }
1619
1620 return 0;
1621}
1622
Simon Glass275b4832021-12-16 20:59:35 -07001623/* TODO(sjg@chromium.org): This function should not be weak */
Marek Vasut0e2afc82020-04-11 21:18:59 +02001624__weak int fdtdec_board_setup(const void *fdt_blob)
1625{
1626 return 0;
1627}
1628
Simon Glass3f51f782021-12-16 20:59:24 -07001629/**
1630 * setup_multi_dtb_fit() - locate the correct dtb from a FIT
1631 *
1632 * This supports the CONFIG_MULTI_DTB_FIT feature, looking for the dtb in a
1633 * supplied FIT
1634 *
1635 * It accepts the current value of gd->fdt_blob, which points to the FIT, then
1636 * updates that gd->fdt_blob, to point to the chosen dtb so that U-Boot uses the
1637 * correct one
1638 */
1639static void setup_multi_dtb_fit(void)
1640{
Simon Glass3f51f782021-12-16 20:59:24 -07001641 void *blob;
1642
1643 /*
1644 * Try and uncompress the blob.
1645 * Unfortunately there is no way to know how big the input blob really
1646 * is. So let us set the maximum input size arbitrarily high. 16MB
1647 * ought to be more than enough for packed DTBs.
1648 */
1649 if (uncompress_blob(gd->fdt_blob, 0x1000000, &blob) == 0)
1650 gd->fdt_blob = blob;
1651
1652 /*
1653 * Check if blob is a FIT images containings DTBs.
1654 * If so, pick the most relevant
1655 */
1656 blob = locate_dtb_in_fit(gd->fdt_blob);
1657 if (blob) {
Simon Glassb4b6daf2021-12-16 20:59:25 -07001658 gd_set_multi_dtb_fit(gd->fdt_blob);
Simon Glass3f51f782021-12-16 20:59:24 -07001659 gd->fdt_blob = blob;
Simon Glass39605c62021-12-16 20:59:33 -07001660 gd->fdt_src = FDTSRC_FIT;
Simon Glass3f51f782021-12-16 20:59:24 -07001661 }
Simon Glass3f51f782021-12-16 20:59:24 -07001662}
1663
Simon Glass08793612015-02-27 22:06:35 -07001664int fdtdec_setup(void)
Simon Glassb45122f2015-02-27 22:06:34 -07001665{
Marek Vasut0e2afc82020-04-11 21:18:59 +02001666 int ret;
Simon Glassba83d852021-12-16 20:59:30 -07001667
1668 /* The devicetree is typically appended to U-Boot */
Simon Glass39605c62021-12-16 20:59:33 -07001669 if (IS_ENABLED(CONFIG_OF_SEPARATE)) {
Simon Glass98550342021-12-16 20:59:31 -07001670 gd->fdt_blob = fdt_find_separate();
Simon Glass39605c62021-12-16 20:59:33 -07001671 gd->fdt_src = FDTSRC_SEPARATE;
1672 } else { /* embed dtb in ELF file for testing / development */
Simon Glass98550342021-12-16 20:59:31 -07001673 gd->fdt_blob = dtb_dt_embedded();
Simon Glass39605c62021-12-16 20:59:33 -07001674 gd->fdt_src = FDTSRC_EMBED;
1675 }
Simon Glass98550342021-12-16 20:59:31 -07001676
1677 /* Allow the board to override the fdt address. */
1678 if (IS_ENABLED(CONFIG_OF_BOARD)) {
Simon Glassba83d852021-12-16 20:59:30 -07001679 gd->fdt_blob = board_fdt_blob_setup(&ret);
1680 if (ret)
1681 return ret;
Simon Glass39605c62021-12-16 20:59:33 -07001682 gd->fdt_src = FDTSRC_BOARD;
Simon Glassba83d852021-12-16 20:59:30 -07001683 }
1684
Simon Glass39605c62021-12-16 20:59:33 -07001685 /* Allow the early environment to override the fdt address */
Simon Glass931511d2021-12-16 20:59:28 -07001686 if (!IS_ENABLED(CONFIG_SPL_BUILD)) {
Simon Glass39605c62021-12-16 20:59:33 -07001687 ulong addr;
1688
1689 addr = env_get_hex("fdtcontroladdr", 0);
1690 if (addr) {
1691 gd->fdt_blob = map_sysmem(addr, 0);
1692 gd->fdt_src = FDTSRC_ENV;
1693 }
Simon Glass931511d2021-12-16 20:59:28 -07001694 }
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001695
Simon Glass3f51f782021-12-16 20:59:24 -07001696 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT))
1697 setup_multi_dtb_fit();
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001698
Simon Glassec4f3272022-12-21 16:08:20 -07001699 ret = fdtdec_prepare_fdt(gd->fdt_blob);
Marek Vasut0e2afc82020-04-11 21:18:59 +02001700 if (!ret)
1701 ret = fdtdec_board_setup(gd->fdt_blob);
Simon Glassee88ba72022-09-06 20:27:19 -06001702 oftree_reset();
1703
Marek Vasut0e2afc82020-04-11 21:18:59 +02001704 return ret;
Simon Glassb45122f2015-02-27 22:06:34 -07001705}
1706
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001707int fdtdec_resetup(int *rescan)
1708{
1709 void *fdt_blob;
1710
1711 /*
1712 * If the current DTB is part of a compressed FIT image,
1713 * try to locate the best match from the uncompressed
1714 * FIT image stillpresent there. Save the time and space
1715 * required to uncompress it again.
1716 */
Simon Glassb4b6daf2021-12-16 20:59:25 -07001717 if (gd_multi_dtb_fit()) {
1718 fdt_blob = locate_dtb_in_fit(gd_multi_dtb_fit());
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001719
1720 if (fdt_blob == gd->fdt_blob) {
1721 /*
1722 * The best match did not change. no need to tear down
1723 * the DM and rescan the fdt.
1724 */
1725 *rescan = 0;
1726 return 0;
1727 }
1728
1729 *rescan = 1;
1730 gd->fdt_blob = fdt_blob;
Simon Glassec4f3272022-12-21 16:08:20 -07001731 return fdtdec_prepare_fdt(fdt_blob);
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001732 }
1733
1734 /*
1735 * If multi_dtb_fit is NULL, it means that blob appended to u-boot is
1736 * not a FIT image containings DTB, but a single DTB. There is no need
1737 * to teard down DM and rescan the DT in this case.
1738 */
1739 *rescan = 0;
1740 return 0;
1741}
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001742
Michael Pratt90c08fa2018-06-11 13:07:09 -06001743int fdtdec_decode_ram_size(const void *blob, const char *area, int board_id,
Masahiro Yamadab75d8dc2020-06-26 15:13:33 +09001744 phys_addr_t *basep, phys_size_t *sizep,
1745 struct bd_info *bd)
Michael Pratt90c08fa2018-06-11 13:07:09 -06001746{
1747 int addr_cells, size_cells;
1748 const u32 *cell, *end;
1749 u64 total_size, size, addr;
1750 int node, child;
1751 bool auto_size;
1752 int bank;
1753 int len;
1754
1755 debug("%s: board_id=%d\n", __func__, board_id);
1756 if (!area)
1757 area = "/memory";
1758 node = fdt_path_offset(blob, area);
1759 if (node < 0) {
1760 debug("No %s node found\n", area);
1761 return -ENOENT;
1762 }
1763
1764 cell = fdt_getprop(blob, node, "reg", &len);
1765 if (!cell) {
1766 debug("No reg property found\n");
1767 return -ENOENT;
1768 }
1769
1770 addr_cells = fdt_address_cells(blob, node);
1771 size_cells = fdt_size_cells(blob, node);
1772
1773 /* Check the board id and mask */
1774 for (child = fdt_first_subnode(blob, node);
1775 child >= 0;
1776 child = fdt_next_subnode(blob, child)) {
1777 int match_mask, match_value;
1778
1779 match_mask = fdtdec_get_int(blob, child, "match-mask", -1);
1780 match_value = fdtdec_get_int(blob, child, "match-value", -1);
1781
1782 if (match_value >= 0 &&
1783 ((board_id & match_mask) == match_value)) {
1784 /* Found matching mask */
1785 debug("Found matching mask %d\n", match_mask);
1786 node = child;
1787 cell = fdt_getprop(blob, node, "reg", &len);
1788 if (!cell) {
1789 debug("No memory-banks property found\n");
1790 return -EINVAL;
1791 }
1792 break;
1793 }
1794 }
1795 /* Note: if no matching subnode was found we use the parent node */
1796
1797 if (bd) {
1798 memset(bd->bi_dram, '\0', sizeof(bd->bi_dram[0]) *
1799 CONFIG_NR_DRAM_BANKS);
1800 }
1801
1802 auto_size = fdtdec_get_bool(blob, node, "auto-size");
1803
1804 total_size = 0;
1805 end = cell + len / 4 - addr_cells - size_cells;
1806 debug("cell at %p, end %p\n", cell, end);
1807 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
1808 if (cell > end)
1809 break;
1810 addr = 0;
1811 if (addr_cells == 2)
1812 addr += (u64)fdt32_to_cpu(*cell++) << 32UL;
1813 addr += fdt32_to_cpu(*cell++);
1814 if (bd)
1815 bd->bi_dram[bank].start = addr;
1816 if (basep && !bank)
1817 *basep = (phys_addr_t)addr;
1818
1819 size = 0;
1820 if (size_cells == 2)
1821 size += (u64)fdt32_to_cpu(*cell++) << 32UL;
1822 size += fdt32_to_cpu(*cell++);
1823
1824 if (auto_size) {
1825 u64 new_size;
1826
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001827 debug("Auto-sizing %llx, size %llx: ", addr, size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001828 new_size = get_ram_size((long *)(uintptr_t)addr, size);
1829 if (new_size == size) {
1830 debug("OK\n");
1831 } else {
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001832 debug("sized to %llx\n", new_size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001833 size = new_size;
1834 }
1835 }
1836
1837 if (bd)
1838 bd->bi_dram[bank].size = size;
1839 total_size += size;
1840 }
1841
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001842 debug("Memory size %llu\n", total_size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001843 if (sizep)
1844 *sizep = (phys_size_t)total_size;
1845
1846 return 0;
1847}
Michael Pratt90c08fa2018-06-11 13:07:09 -06001848
Simon Glassb45122f2015-02-27 22:06:34 -07001849#endif /* !USE_HOSTCC */