blob: 87aa677a4a9192f048705fa03b8d7499bdd53cc6 [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 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 Glassdb41d652019-12-28 10:45:07 -070010#include <hang.h>
Simon Glass9b4a2052019-12-28 10:45:05 -070011#include <init.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -060012#include <log.h>
Simon Glass336d4612020-02-03 07:36:16 -070013#include <malloc.h>
Simon Glass90526e92020-05-10 11:39:56 -060014#include <net.h>
Simon Glassb7e0d732017-05-18 20:09:02 -060015#include <dm/of_extra.h>
Simon Glass9eef56d2019-08-01 09:46:48 -060016#include <env.h>
Jean-Jacques Hiblot035d6402017-09-15 12:57:31 +020017#include <errno.h>
18#include <fdtdec.h>
19#include <fdt_support.h>
Simon Glass0c670fc2019-08-01 09:46:36 -060020#include <gzip.h>
Heinrich Schuchardtf980c992018-11-18 17:58:50 +010021#include <mapmem.h>
Masahiro Yamadab08c8c42018-03-05 01:20:11 +090022#include <linux/libfdt.h>
Jean-Jacques Hiblot035d6402017-09-15 12:57:31 +020023#include <serial.h>
Simon Glass401d1c42020-10-30 21:38:53 -060024#include <asm/global_data.h>
Jean-Jacques Hiblot035d6402017-09-15 12:57:31 +020025#include <asm/sections.h>
Simon Glass5c33c9f2014-07-23 06:55:09 -060026#include <linux/ctype.h>
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +020027#include <linux/lzo.h>
Michal Simekc2f09502020-07-10 13:34:44 +020028#include <linux/ioport.h>
Simon Glassb5220bc2011-10-24 19:15:32 +000029
30DECLARE_GLOBAL_DATA_PTR;
31
32/*
33 * Here are the type we know about. One day we might allow drivers to
34 * register. For now we just put them here. The COMPAT macro allows us to
35 * turn this into a sparse list later, and keeps the ID with the name.
Simon Glass01a227d2016-06-19 17:33:13 -060036 *
37 * NOTE: This list is basically a TODO list for things that need to be
38 * converted to driver model. So don't add new things here unless there is a
39 * good reason why driver-model conversion is infeasible. Examples include
40 * things which are used before driver model is available.
Simon Glassb5220bc2011-10-24 19:15:32 +000041 */
42#define COMPAT(id, name) name
43static const char * const compat_names[COMPAT_COUNT] = {
Simon Glassf88fe2d2012-02-27 10:52:34 +000044 COMPAT(UNKNOWN, "<none>"),
Jimmy Zhang0e35ad02012-04-02 13:18:52 +000045 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
46 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
Jim Lin312693c2012-07-29 20:53:29 +000047 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
Thierry Reding79c7a902014-12-09 22:25:09 -070048 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070049 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
Rajeshwari Shinde6abd1622013-01-07 23:35:05 +000050 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
Vivek Gautam108b85b2013-09-14 14:02:48 +053051 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
Akshay Saraswat618766c2013-02-25 01:13:01 +000052 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
Piotr Wilczekde461c52014-03-07 14:59:39 +010053 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
Jaehoon Chung7d3ca0f2014-05-16 13:59:51 +090054 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
Neil Armstrong51e4e3e2019-02-10 10:16:21 +000055 COMPAT(GENERIC_SPI_FLASH, "jedec,spi-nor"),
Ajay Kumar45c480c2014-09-05 16:53:33 +053056 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
Simon Glass77f9b1f2014-11-12 22:42:21 -070057 COMPAT(INTEL_MICROCODE, "intel,microcode"),
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"),
Marek Vasut19c8fc72018-05-12 11:56:10 +020076 COMPAT(ALTERA_SOCFPGA_CLK_INIT, "altr,socfpga-a10-clk-init")
Simon Glassb5220bc2011-10-24 19:15:32 +000077};
78
Simon Glassff66e7b2021-12-16 20:59:34 -070079static const char *const fdt_src_name[] = {
80 [FDTSRC_SEPARATE] = "separate",
81 [FDTSRC_FIT] = "fit",
82 [FDTSRC_BOARD] = "board",
83 [FDTSRC_EMBED] = "embed",
84 [FDTSRC_ENV] = "env",
85};
86
87const char *fdtdec_get_srcname(void)
88{
89 return fdt_src_name[gd->fdt_src];
90}
91
Simon Glassa53f4a22012-01-17 08:20:50 +000092const char *fdtdec_get_compatible(enum fdt_compat_id id)
93{
94 /* We allow reading of the 'unknown' ID for testing purposes */
95 assert(id >= 0 && id < COMPAT_COUNT);
96 return compat_names[id];
97}
98
Stephen Warren02464e32015-08-06 15:31:02 -060099fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100100 const char *prop_name, int index, int na,
101 int ns, fdt_size_t *sizep,
102 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600103{
104 const fdt32_t *prop, *prop_end;
105 const fdt32_t *prop_addr, *prop_size, *prop_after_size;
106 int len;
107 fdt_addr_t addr;
108
109 debug("%s: %s: ", __func__, prop_name);
110
Stephen Warren02464e32015-08-06 15:31:02 -0600111 prop = fdt_getprop(blob, node, prop_name, &len);
112 if (!prop) {
113 debug("(not found)\n");
114 return FDT_ADDR_T_NONE;
115 }
116 prop_end = prop + (len / sizeof(*prop));
117
118 prop_addr = prop + (index * (na + ns));
119 prop_size = prop_addr + na;
120 prop_after_size = prop_size + ns;
121 if (prop_after_size > prop_end) {
122 debug("(not enough data: expected >= %d cells, got %d cells)\n",
123 (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
124 return FDT_ADDR_T_NONE;
125 }
126
Vignesh R5efa1bf2017-03-20 10:04:38 +0530127#if CONFIG_IS_ENABLED(OF_TRANSLATE)
Stephen Warren6e06acb2016-08-05 09:47:51 -0600128 if (translate)
129 addr = fdt_translate_address(blob, node, prop_addr);
130 else
131#endif
132 addr = fdtdec_get_number(prop_addr, na);
Stephen Warren02464e32015-08-06 15:31:02 -0600133
134 if (sizep) {
135 *sizep = fdtdec_get_number(prop_size, ns);
Simon Glassfd30d2c2016-02-29 15:25:37 -0700136 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
137 (unsigned long long)*sizep);
Stephen Warren02464e32015-08-06 15:31:02 -0600138 } else {
Simon Glassfd30d2c2016-02-29 15:25:37 -0700139 debug("addr=%08llx\n", (unsigned long long)addr);
Stephen Warren02464e32015-08-06 15:31:02 -0600140 }
141
142 return addr;
143}
144
145fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
Mario Six2e386622018-01-15 11:07:35 +0100146 int node, const char *prop_name,
147 int index, fdt_size_t *sizep,
148 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600149{
150 int na, ns;
151
152 debug("%s: ", __func__);
153
154 na = fdt_address_cells(blob, parent);
155 if (na < 1) {
156 debug("(bad #address-cells)\n");
157 return FDT_ADDR_T_NONE;
158 }
159
160 ns = fdt_size_cells(blob, parent);
Przemyslaw Marczakff0a6352015-09-30 13:14:50 +0200161 if (ns < 0) {
Stephen Warren02464e32015-08-06 15:31:02 -0600162 debug("(bad #size-cells)\n");
163 return FDT_ADDR_T_NONE;
164 }
165
166 debug("na=%d, ns=%d, ", na, ns);
167
168 return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600169 ns, sizep, translate);
Stephen Warren02464e32015-08-06 15:31:02 -0600170}
171
172fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100173 const char *prop_name, int index,
174 fdt_size_t *sizep,
175 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600176{
177 int parent;
178
179 debug("%s: ", __func__);
180
181 parent = fdt_parent_offset(blob, node);
182 if (parent < 0) {
183 debug("(no parent found)\n");
184 return FDT_ADDR_T_NONE;
185 }
186
187 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600188 index, sizep, translate);
Stephen Warren02464e32015-08-06 15:31:02 -0600189}
190
Simon Glass4397a2a2013-03-19 04:58:51 +0000191fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100192 const char *prop_name, fdt_size_t *sizep)
Simon Glassb5220bc2011-10-24 19:15:32 +0000193{
Stephen Warrend93b9a02015-09-25 10:11:41 -0600194 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
195
Stephen Warren02464e32015-08-06 15:31:02 -0600196 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
197 sizeof(fdt_addr_t) / sizeof(fdt32_t),
Stephen Warren6e06acb2016-08-05 09:47:51 -0600198 ns, sizep, false);
Simon Glassb5220bc2011-10-24 19:15:32 +0000199}
200
Mario Six2e386622018-01-15 11:07:35 +0100201fdt_addr_t fdtdec_get_addr(const void *blob, int node, const char *prop_name)
Simon Glass4397a2a2013-03-19 04:58:51 +0000202{
203 return fdtdec_get_addr_size(blob, node, prop_name, NULL);
204}
205
Bin Menga62e84d2014-12-31 16:05:11 +0800206int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
207{
208 const char *list, *end;
209 int len;
210
211 list = fdt_getprop(blob, node, "compatible", &len);
212 if (!list)
213 return -ENOENT;
214
215 end = list + len;
216 while (list < end) {
Bin Menga62e84d2014-12-31 16:05:11 +0800217 len = strlen(list);
218 if (len >= strlen("pciVVVV,DDDD")) {
Mario Sixb79221a2018-01-15 11:07:36 +0100219 char *s = strstr(list, "pci");
Bin Menga62e84d2014-12-31 16:05:11 +0800220
221 /*
222 * check if the string is something like pciVVVV,DDDD.RR
223 * or just pciVVVV,DDDD
224 */
225 if (s && s[7] == ',' &&
226 (s[12] == '.' || s[12] == 0)) {
227 s += 3;
228 *vendor = simple_strtol(s, NULL, 16);
229
230 s += 5;
231 *device = simple_strtol(s, NULL, 16);
232
233 return 0;
234 }
Bin Menga62e84d2014-12-31 16:05:11 +0800235 }
Bin Mengbc6351e2015-08-20 06:40:25 -0700236 list += (len + 1);
Bin Menga62e84d2014-12-31 16:05:11 +0800237 }
238
239 return -ENOENT;
240}
241
Simon Glass194fca92020-01-27 08:49:38 -0700242int fdtdec_get_pci_bar32(const struct udevice *dev, struct fdt_pci_addr *addr,
Simon Glassfcc0a872015-11-29 13:17:54 -0700243 u32 *bar)
Bin Menga62e84d2014-12-31 16:05:11 +0800244{
Bin Menga62e84d2014-12-31 16:05:11 +0800245 int barnum;
Bin Menga62e84d2014-12-31 16:05:11 +0800246
247 /* extract the bar number from fdt_pci_addr */
248 barnum = addr->phys_hi & 0xff;
Mario Sixb79221a2018-01-15 11:07:36 +0100249 if (barnum < PCI_BASE_ADDRESS_0 || barnum > PCI_CARDBUS_CIS)
Bin Menga62e84d2014-12-31 16:05:11 +0800250 return -EINVAL;
251
252 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
Simon Glassb717f2f2021-08-01 18:54:18 -0600253
254 /*
255 * There is a strange toolchain bug with nds32 which complains about
256 * an undefined reference here, even if fdtdec_get_pci_bar32() is never
257 * called. An #ifdef seems to be the only fix!
258 */
259#if !IS_ENABLED(CONFIG_NDS32)
Simon Glassfcc0a872015-11-29 13:17:54 -0700260 *bar = dm_pci_read_bar32(dev, barnum);
Simon Glassb717f2f2021-08-01 18:54:18 -0600261#endif
Bin Menga62e84d2014-12-31 16:05:11 +0800262
263 return 0;
264}
Suneel Garapati1db7ee42019-10-19 15:19:35 -0700265
266int fdtdec_get_pci_bus_range(const void *blob, int node,
267 struct fdt_resource *res)
268{
269 const u32 *values;
270 int len;
271
272 values = fdt_getprop(blob, node, "bus-range", &len);
273 if (!values || len < sizeof(*values) * 2)
274 return -EINVAL;
275
276 res->start = fdt32_to_cpu(*values++);
277 res->end = fdt32_to_cpu(*values);
278
279 return 0;
280}
Bin Menga62e84d2014-12-31 16:05:11 +0800281
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000282uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100283 uint64_t default_val)
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000284{
Jean-Jacques Hiblotd60ae4c2019-10-22 10:05:22 +0200285 const unaligned_fdt64_t *cell64;
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000286 int length;
287
288 cell64 = fdt_getprop(blob, node, prop_name, &length);
289 if (!cell64 || length < sizeof(*cell64))
290 return default_val;
291
292 return fdt64_to_cpu(*cell64);
293}
294
Simon Glassf88fe2d2012-02-27 10:52:34 +0000295int fdtdec_get_is_enabled(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000296{
297 const char *cell;
298
Simon Glassf88fe2d2012-02-27 10:52:34 +0000299 /*
300 * It should say "okay", so only allow that. Some fdts use "ok" but
301 * this is a bug. Please fix your device tree source file. See here
302 * for discussion:
303 *
304 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
305 */
Simon Glassb5220bc2011-10-24 19:15:32 +0000306 cell = fdt_getprop(blob, node, "status", NULL);
307 if (cell)
Mario Sixb79221a2018-01-15 11:07:36 +0100308 return strcmp(cell, "okay") == 0;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000309 return 1;
Simon Glassb5220bc2011-10-24 19:15:32 +0000310}
311
Gerald Van Baren7cde3972012-11-12 23:13:54 -0500312enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000313{
314 enum fdt_compat_id id;
315
316 /* Search our drivers */
317 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
Mario Sixb79221a2018-01-15 11:07:36 +0100318 if (fdt_node_check_compatible(blob, node,
319 compat_names[id]) == 0)
Simon Glassb5220bc2011-10-24 19:15:32 +0000320 return id;
321 return COMPAT_UNKNOWN;
322}
323
Mario Six2e386622018-01-15 11:07:35 +0100324int fdtdec_next_compatible(const void *blob, int node, enum fdt_compat_id id)
Simon Glassb5220bc2011-10-24 19:15:32 +0000325{
326 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
327}
328
Simon Glass3ddecfc2012-04-02 13:18:42 +0000329int fdtdec_next_compatible_subnode(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100330 enum fdt_compat_id id, int *depthp)
Simon Glass3ddecfc2012-04-02 13:18:42 +0000331{
332 do {
333 node = fdt_next_node(blob, node, depthp);
334 } while (*depthp > 1);
335
336 /* If this is a direct subnode, and compatible, return it */
337 if (*depthp == 1 && 0 == fdt_node_check_compatible(
338 blob, node, compat_names[id]))
339 return node;
340
341 return -FDT_ERR_NOTFOUND;
342}
343
Mario Six2e386622018-01-15 11:07:35 +0100344int fdtdec_next_alias(const void *blob, const char *name, enum fdt_compat_id id,
345 int *upto)
Simon Glassb5220bc2011-10-24 19:15:32 +0000346{
347#define MAX_STR_LEN 20
348 char str[MAX_STR_LEN + 20];
349 int node, err;
350
351 /* snprintf() is not available */
352 assert(strlen(name) < MAX_STR_LEN);
353 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
Simon Glass00878472012-10-31 14:02:42 +0000354 node = fdt_path_offset(blob, str);
Simon Glassb5220bc2011-10-24 19:15:32 +0000355 if (node < 0)
356 return node;
357 err = fdt_node_check_compatible(blob, node, compat_names[id]);
358 if (err < 0)
359 return err;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000360 if (err)
361 return -FDT_ERR_NOTFOUND;
362 (*upto)++;
363 return node;
Simon Glassb5220bc2011-10-24 19:15:32 +0000364}
365
Simon Glassa53f4a22012-01-17 08:20:50 +0000366int fdtdec_find_aliases_for_id(const void *blob, const char *name,
Mario Six2e386622018-01-15 11:07:35 +0100367 enum fdt_compat_id id, int *node_list,
368 int maxcount)
Simon Glassa53f4a22012-01-17 08:20:50 +0000369{
Simon Glassc6782272012-02-03 15:13:53 +0000370 memset(node_list, '\0', sizeof(*node_list) * maxcount);
371
372 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
373}
374
375/* TODO: Can we tighten this code up a little? */
376int fdtdec_add_aliases_for_id(const void *blob, const char *name,
Mario Six2e386622018-01-15 11:07:35 +0100377 enum fdt_compat_id id, int *node_list,
378 int maxcount)
Simon Glassc6782272012-02-03 15:13:53 +0000379{
Simon Glassa53f4a22012-01-17 08:20:50 +0000380 int name_len = strlen(name);
381 int nodes[maxcount];
382 int num_found = 0;
383 int offset, node;
384 int alias_node;
385 int count;
386 int i, j;
387
388 /* find the alias node if present */
389 alias_node = fdt_path_offset(blob, "/aliases");
390
391 /*
392 * start with nothing, and we can assume that the root node can't
393 * match
394 */
395 memset(nodes, '\0', sizeof(nodes));
396
397 /* First find all the compatible nodes */
398 for (node = count = 0; node >= 0 && count < maxcount;) {
399 node = fdtdec_next_compatible(blob, node, id);
400 if (node >= 0)
401 nodes[count++] = node;
402 }
403 if (node >= 0)
404 debug("%s: warning: maxcount exceeded with alias '%s'\n",
Mario Six2e386622018-01-15 11:07:35 +0100405 __func__, name);
Simon Glassa53f4a22012-01-17 08:20:50 +0000406
407 /* Now find all the aliases */
Simon Glassa53f4a22012-01-17 08:20:50 +0000408 for (offset = fdt_first_property_offset(blob, alias_node);
409 offset > 0;
410 offset = fdt_next_property_offset(blob, offset)) {
411 const struct fdt_property *prop;
412 const char *path;
413 int number;
414 int found;
415
416 node = 0;
417 prop = fdt_get_property_by_offset(blob, offset, NULL);
418 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
419 if (prop->len && 0 == strncmp(path, name, name_len))
420 node = fdt_path_offset(blob, prop->data);
421 if (node <= 0)
422 continue;
423
424 /* Get the alias number */
Simon Glass0b1284e2021-07-24 09:03:30 -0600425 number = dectoul(path + name_len, NULL);
Simon Glassa53f4a22012-01-17 08:20:50 +0000426 if (number < 0 || number >= maxcount) {
427 debug("%s: warning: alias '%s' is out of range\n",
Mario Six2e386622018-01-15 11:07:35 +0100428 __func__, path);
Simon Glassa53f4a22012-01-17 08:20:50 +0000429 continue;
430 }
431
432 /* Make sure the node we found is actually in our list! */
433 found = -1;
434 for (j = 0; j < count; j++)
435 if (nodes[j] == node) {
436 found = j;
437 break;
438 }
439
440 if (found == -1) {
441 debug("%s: warning: alias '%s' points to a node "
442 "'%s' that is missing or is not compatible "
443 " with '%s'\n", __func__, path,
444 fdt_get_name(blob, node, NULL),
445 compat_names[id]);
446 continue;
447 }
448
449 /*
450 * Add this node to our list in the right place, and mark
451 * it as done.
452 */
453 if (fdtdec_get_is_enabled(blob, node)) {
Simon Glassc6782272012-02-03 15:13:53 +0000454 if (node_list[number]) {
455 debug("%s: warning: alias '%s' requires that "
456 "a node be placed in the list in a "
457 "position which is already filled by "
458 "node '%s'\n", __func__, path,
459 fdt_get_name(blob, node, NULL));
460 continue;
461 }
Simon Glassa53f4a22012-01-17 08:20:50 +0000462 node_list[number] = node;
463 if (number >= num_found)
464 num_found = number + 1;
465 }
Simon Glassc6782272012-02-03 15:13:53 +0000466 nodes[found] = 0;
Simon Glassa53f4a22012-01-17 08:20:50 +0000467 }
468
469 /* Add any nodes not mentioned by an alias */
470 for (i = j = 0; i < maxcount; i++) {
471 if (!node_list[i]) {
472 for (; j < maxcount; j++)
473 if (nodes[j] &&
Mario Six2e386622018-01-15 11:07:35 +0100474 fdtdec_get_is_enabled(blob, nodes[j]))
Simon Glassa53f4a22012-01-17 08:20:50 +0000475 break;
476
477 /* Have we run out of nodes to add? */
478 if (j == maxcount)
479 break;
480
481 assert(!node_list[i]);
482 node_list[i] = nodes[j++];
483 if (i >= num_found)
484 num_found = i + 1;
485 }
486 }
487
488 return num_found;
489}
490
Simon Glass5c33c9f2014-07-23 06:55:09 -0600491int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
492 int *seqp)
493{
494 int base_len = strlen(base);
495 const char *find_name;
496 int find_namelen;
497 int prop_offset;
498 int aliases;
499
500 find_name = fdt_get_name(blob, offset, &find_namelen);
501 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
502
503 aliases = fdt_path_offset(blob, "/aliases");
504 for (prop_offset = fdt_first_property_offset(blob, aliases);
505 prop_offset > 0;
506 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
507 const char *prop;
508 const char *name;
509 const char *slash;
Simon Glassc4af6732015-06-23 15:39:08 -0600510 int len, val;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600511
512 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
513 debug(" - %s, %s\n", name, prop);
514 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
515 strncmp(name, base, base_len))
516 continue;
517
518 slash = strrchr(prop, '/');
519 if (strcmp(slash + 1, find_name))
520 continue;
Aswath Govindrajuc5891322020-12-03 10:55:45 +0530521
522 /*
523 * Adding an extra check to distinguish DT nodes with
524 * same name
525 */
526 if (IS_ENABLED(CONFIG_PHANDLE_CHECK_SEQ)) {
527 if (fdt_get_phandle(blob, offset) !=
528 fdt_get_phandle(blob, fdt_path_offset(blob, prop)))
529 continue;
530 }
531
Simon Glassc4af6732015-06-23 15:39:08 -0600532 val = trailing_strtol(name);
533 if (val != -1) {
534 *seqp = val;
535 debug("Found seq %d\n", *seqp);
536 return 0;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600537 }
538 }
539
540 debug("Not found\n");
541 return -ENOENT;
542}
543
Michal Simek003c9dc2019-01-31 16:30:58 +0100544int fdtdec_get_alias_highest_id(const void *blob, const char *base)
545{
546 int base_len = strlen(base);
547 int prop_offset;
548 int aliases;
549 int max = -1;
550
551 debug("Looking for highest alias id for '%s'\n", base);
552
553 aliases = fdt_path_offset(blob, "/aliases");
554 for (prop_offset = fdt_first_property_offset(blob, aliases);
555 prop_offset > 0;
556 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
557 const char *prop;
558 const char *name;
559 int len, val;
560
561 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
562 debug(" - %s, %s\n", name, prop);
563 if (*prop != '/' || prop[len - 1] ||
564 strncmp(name, base, base_len))
565 continue;
566
567 val = trailing_strtol(name);
568 if (val > max) {
569 debug("Found seq %d\n", val);
570 max = val;
571 }
572 }
573
574 return max;
575}
576
Simon Glass3bc37a52015-10-17 19:41:14 -0600577const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
578{
579 int chosen_node;
580
581 if (!blob)
582 return NULL;
583 chosen_node = fdt_path_offset(blob, "/chosen");
584 return fdt_getprop(blob, chosen_node, name, NULL);
585}
586
Simon Glassaac07d42014-09-04 16:27:24 -0600587int fdtdec_get_chosen_node(const void *blob, const char *name)
588{
589 const char *prop;
Simon Glassaac07d42014-09-04 16:27:24 -0600590
Simon Glass3bc37a52015-10-17 19:41:14 -0600591 prop = fdtdec_get_chosen_prop(blob, name);
Simon Glassaac07d42014-09-04 16:27:24 -0600592 if (!prop)
593 return -FDT_ERR_NOTFOUND;
594 return fdt_path_offset(blob, prop);
595}
596
Simon Glass9a263e52012-03-28 10:08:24 +0000597int fdtdec_check_fdt(void)
598{
599 /*
600 * We must have an FDT, but we cannot panic() yet since the console
601 * is not ready. So for now, just assert(). Boards which need an early
602 * FDT (prior to console ready) will need to make their own
603 * arrangements and do their own checks.
604 */
605 assert(!fdtdec_prepare_fdt());
606 return 0;
607}
608
Simon Glassb5220bc2011-10-24 19:15:32 +0000609/*
610 * This function is a little odd in that it accesses global data. At some
611 * point if the architecture board.c files merge this will make more sense.
612 * Even now, it is common code.
613 */
Simon Glass9a263e52012-03-28 10:08:24 +0000614int fdtdec_prepare_fdt(void)
Simon Glassb5220bc2011-10-24 19:15:32 +0000615{
Simon Glassc309c2d2013-04-20 08:42:46 +0000616 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
617 fdt_check_header(gd->fdt_blob)) {
Simon Glass66312372015-02-27 22:06:32 -0700618#ifdef CONFIG_SPL_BUILD
619 puts("Missing DTB\n");
620#else
Simon Glasse1d23f52021-01-13 20:29:48 -0700621 printf("No valid device tree binary found at %p\n",
622 gd->fdt_blob);
Simon Glasscb5f97f702015-06-23 15:39:09 -0600623# ifdef DEBUG
624 if (gd->fdt_blob) {
625 printf("fdt_blob=%p\n", gd->fdt_blob);
626 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
627 32, 0);
628 }
629# endif
Simon Glass66312372015-02-27 22:06:32 -0700630#endif
Simon Glass9a263e52012-03-28 10:08:24 +0000631 return -1;
632 }
Simon Glassb5220bc2011-10-24 19:15:32 +0000633 return 0;
634}
Simon Glassd17da652012-02-27 10:52:35 +0000635
636int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
637{
638 const u32 *phandle;
639 int lookup;
640
Simon Glass1cb23232012-07-12 05:25:01 +0000641 debug("%s: %s\n", __func__, prop_name);
Simon Glassd17da652012-02-27 10:52:35 +0000642 phandle = fdt_getprop(blob, node, prop_name, NULL);
643 if (!phandle)
644 return -FDT_ERR_NOTFOUND;
645
646 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
647 return lookup;
648}
649
650/**
651 * Look up a property in a node and check that it has a minimum length.
652 *
653 * @param blob FDT blob
654 * @param node node to examine
655 * @param prop_name name of property to find
656 * @param min_len minimum property length in bytes
657 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
658 found, or -FDT_ERR_BADLAYOUT if not enough data
Heinrich Schuchardt185f8122022-01-19 18:05:50 +0100659 * Return: pointer to cell, which is only valid if err == 0
Simon Glassd17da652012-02-27 10:52:35 +0000660 */
661static const void *get_prop_check_min_len(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100662 const char *prop_name, int min_len,
663 int *err)
Simon Glassd17da652012-02-27 10:52:35 +0000664{
665 const void *cell;
666 int len;
667
668 debug("%s: %s\n", __func__, prop_name);
669 cell = fdt_getprop(blob, node, prop_name, &len);
670 if (!cell)
671 *err = -FDT_ERR_NOTFOUND;
672 else if (len < min_len)
673 *err = -FDT_ERR_BADLAYOUT;
674 else
675 *err = 0;
676 return cell;
677}
678
679int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100680 u32 *array, int count)
Simon Glassd17da652012-02-27 10:52:35 +0000681{
682 const u32 *cell;
Mario Sixb79221a2018-01-15 11:07:36 +0100683 int err = 0;
Simon Glassd17da652012-02-27 10:52:35 +0000684
685 debug("%s: %s\n", __func__, prop_name);
686 cell = get_prop_check_min_len(blob, node, prop_name,
687 sizeof(u32) * count, &err);
688 if (!err) {
Mario Sixb79221a2018-01-15 11:07:36 +0100689 int i;
690
Simon Glassd17da652012-02-27 10:52:35 +0000691 for (i = 0; i < count; i++)
692 array[i] = fdt32_to_cpu(cell[i]);
693 }
694 return err;
695}
696
Simon Glassa9f04d42014-11-10 18:00:19 -0700697int fdtdec_get_int_array_count(const void *blob, int node,
698 const char *prop_name, u32 *array, int count)
699{
700 const u32 *cell;
701 int len, elems;
702 int i;
703
704 debug("%s: %s\n", __func__, prop_name);
705 cell = fdt_getprop(blob, node, prop_name, &len);
706 if (!cell)
707 return -FDT_ERR_NOTFOUND;
708 elems = len / sizeof(u32);
709 if (count > elems)
710 count = elems;
711 for (i = 0; i < count; i++)
712 array[i] = fdt32_to_cpu(cell[i]);
713
714 return count;
715}
716
Simon Glass96875e72012-04-02 13:18:41 +0000717const u32 *fdtdec_locate_array(const void *blob, int node,
718 const char *prop_name, int count)
719{
720 const u32 *cell;
721 int err;
722
723 cell = get_prop_check_min_len(blob, node, prop_name,
724 sizeof(u32) * count, &err);
725 return err ? NULL : cell;
726}
727
Simon Glassd17da652012-02-27 10:52:35 +0000728int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
729{
730 const s32 *cell;
731 int len;
732
733 debug("%s: %s\n", __func__, prop_name);
734 cell = fdt_getprop(blob, node, prop_name, &len);
735 return cell != NULL;
736}
Simon Glassed3ee5c2012-02-27 10:52:36 +0000737
Simon Glass57068a72015-01-05 20:05:26 -0700738int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
739 const char *list_name,
740 const char *cells_name,
741 int cell_count, int index,
742 struct fdtdec_phandle_args *out_args)
743{
744 const __be32 *list, *list_end;
745 int rc = 0, size, cur_index = 0;
746 uint32_t count = 0;
747 int node = -1;
748 int phandle;
749
750 /* Retrieve the phandle list property */
751 list = fdt_getprop(blob, src_node, list_name, &size);
752 if (!list)
753 return -ENOENT;
754 list_end = list + size / sizeof(*list);
755
756 /* Loop over the phandles until all the requested entry is found */
757 while (list < list_end) {
758 rc = -EINVAL;
759 count = 0;
760
761 /*
762 * If phandle is 0, then it is an empty entry with no
763 * arguments. Skip forward to the next entry.
764 */
765 phandle = be32_to_cpup(list++);
766 if (phandle) {
767 /*
768 * Find the provider node and parse the #*-cells
769 * property to determine the argument length.
770 *
771 * This is not needed if the cell count is hard-coded
772 * (i.e. cells_name not set, but cell_count is set),
773 * except when we're going to return the found node
774 * below.
775 */
776 if (cells_name || cur_index == index) {
777 node = fdt_node_offset_by_phandle(blob,
778 phandle);
Patrick Delaunaycba487c2020-09-25 09:41:15 +0200779 if (node < 0) {
Simon Glass57068a72015-01-05 20:05:26 -0700780 debug("%s: could not find phandle\n",
781 fdt_get_name(blob, src_node,
782 NULL));
783 goto err;
784 }
785 }
786
787 if (cells_name) {
788 count = fdtdec_get_int(blob, node, cells_name,
789 -1);
790 if (count == -1) {
791 debug("%s: could not get %s for %s\n",
792 fdt_get_name(blob, src_node,
793 NULL),
794 cells_name,
795 fdt_get_name(blob, node,
796 NULL));
797 goto err;
798 }
799 } else {
800 count = cell_count;
801 }
802
803 /*
804 * Make sure that the arguments actually fit in the
805 * remaining property data length
806 */
807 if (list + count > list_end) {
808 debug("%s: arguments longer than property\n",
809 fdt_get_name(blob, src_node, NULL));
810 goto err;
811 }
812 }
813
814 /*
815 * All of the error cases above bail out of the loop, so at
816 * this point, the parsing is successful. If the requested
817 * index matches, then fill the out_args structure and return,
818 * or return -ENOENT for an empty entry.
819 */
820 rc = -ENOENT;
821 if (cur_index == index) {
822 if (!phandle)
823 goto err;
824
825 if (out_args) {
826 int i;
827
828 if (count > MAX_PHANDLE_ARGS) {
829 debug("%s: too many arguments %d\n",
830 fdt_get_name(blob, src_node,
831 NULL), count);
832 count = MAX_PHANDLE_ARGS;
833 }
834 out_args->node = node;
835 out_args->args_count = count;
836 for (i = 0; i < count; i++) {
837 out_args->args[i] =
838 be32_to_cpup(list++);
839 }
840 }
841
842 /* Found it! return success */
843 return 0;
844 }
845
846 node = -1;
847 list += count;
848 cur_index++;
849 }
850
851 /*
852 * Result will be one of:
853 * -ENOENT : index is for empty phandle
854 * -EINVAL : parsing error on data
855 * [1..n] : Number of phandle (count mode; when index = -1)
856 */
857 rc = index < 0 ? cur_index : -ENOENT;
858 err:
859 return rc;
860}
861
Anton Staffbed4d892012-04-17 09:01:28 +0000862int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100863 u8 *array, int count)
Anton Staffbed4d892012-04-17 09:01:28 +0000864{
865 const u8 *cell;
866 int err;
867
868 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
869 if (!err)
870 memcpy(array, cell, count);
871 return err;
872}
873
874const u8 *fdtdec_locate_byte_array(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100875 const char *prop_name, int count)
Anton Staffbed4d892012-04-17 09:01:28 +0000876{
877 const u8 *cell;
878 int err;
879
880 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
881 if (err)
882 return NULL;
883 return cell;
884}
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000885
Simon Glass5f7bfdd2015-03-05 12:25:14 -0700886u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
Thierry Reding56f42242014-08-26 17:33:53 +0200887{
888 u64 number = 0;
889
890 while (cells--)
891 number = (number << 32) | fdt32_to_cpu(*ptr++);
892
893 return number;
894}
895
896int fdt_get_resource(const void *fdt, int node, const char *property,
897 unsigned int index, struct fdt_resource *res)
898{
899 const fdt32_t *ptr, *end;
900 int na, ns, len, parent;
901 unsigned int i = 0;
902
903 parent = fdt_parent_offset(fdt, node);
904 if (parent < 0)
905 return parent;
906
907 na = fdt_address_cells(fdt, parent);
908 ns = fdt_size_cells(fdt, parent);
909
910 ptr = fdt_getprop(fdt, node, property, &len);
911 if (!ptr)
912 return len;
913
914 end = ptr + len / sizeof(*ptr);
915
916 while (ptr + na + ns <= end) {
917 if (i == index) {
Patrick Delaunayfeb7ac42021-04-06 09:38:06 +0200918 if (CONFIG_IS_ENABLED(OF_TRANSLATE))
919 res->start = fdt_translate_address(fdt, node, ptr);
920 else
921 res->start = fdtdec_get_number(ptr, na);
922
Mario Sixb79221a2018-01-15 11:07:36 +0100923 res->end = res->start;
Thierry Reding56f42242014-08-26 17:33:53 +0200924 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
925 return 0;
926 }
927
928 ptr += na + ns;
929 i++;
930 }
931
932 return -FDT_ERR_NOTFOUND;
933}
934
935int fdt_get_named_resource(const void *fdt, int node, const char *property,
936 const char *prop_names, const char *name,
937 struct fdt_resource *res)
938{
939 int index;
940
Simon Glassb02e4042016-10-02 17:59:28 -0600941 index = fdt_stringlist_search(fdt, node, prop_names, name);
Thierry Reding56f42242014-08-26 17:33:53 +0200942 if (index < 0)
943 return index;
944
945 return fdt_get_resource(fdt, node, property, index, res);
946}
Thierry Reding9f85eee2014-08-26 17:33:54 +0200947
Simon Glass12e67112015-04-14 21:03:21 -0600948static int decode_timing_property(const void *blob, int node, const char *name,
949 struct timing_entry *result)
950{
951 int length, ret = 0;
952 const u32 *prop;
953
954 prop = fdt_getprop(blob, node, name, &length);
955 if (!prop) {
956 debug("%s: could not find property %s\n",
957 fdt_get_name(blob, node, NULL), name);
958 return length;
959 }
960
961 if (length == sizeof(u32)) {
962 result->typ = fdtdec_get_int(blob, node, name, 0);
963 result->min = result->typ;
964 result->max = result->typ;
965 } else {
966 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
967 }
968
969 return ret;
970}
971
972int fdtdec_decode_display_timing(const void *blob, int parent, int index,
973 struct display_timing *dt)
974{
975 int i, node, timings_node;
976 u32 val = 0;
977 int ret = 0;
978
979 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
980 if (timings_node < 0)
981 return timings_node;
982
983 for (i = 0, node = fdt_first_subnode(blob, timings_node);
984 node > 0 && i != index;
985 node = fdt_next_subnode(blob, node))
986 i++;
987
988 if (node < 0)
989 return node;
990
991 memset(dt, 0, sizeof(*dt));
992
993 ret |= decode_timing_property(blob, node, "hback-porch",
994 &dt->hback_porch);
995 ret |= decode_timing_property(blob, node, "hfront-porch",
996 &dt->hfront_porch);
997 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
998 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
999 ret |= decode_timing_property(blob, node, "vback-porch",
1000 &dt->vback_porch);
1001 ret |= decode_timing_property(blob, node, "vfront-porch",
1002 &dt->vfront_porch);
1003 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
1004 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
1005 ret |= decode_timing_property(blob, node, "clock-frequency",
1006 &dt->pixelclock);
1007
1008 dt->flags = 0;
1009 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1010 if (val != -1) {
1011 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1012 DISPLAY_FLAGS_VSYNC_LOW;
1013 }
1014 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1015 if (val != -1) {
1016 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1017 DISPLAY_FLAGS_HSYNC_LOW;
1018 }
1019 val = fdtdec_get_int(blob, node, "de-active", -1);
1020 if (val != -1) {
1021 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1022 DISPLAY_FLAGS_DE_LOW;
1023 }
1024 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1025 if (val != -1) {
1026 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1027 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1028 }
1029
1030 if (fdtdec_get_bool(blob, node, "interlaced"))
1031 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1032 if (fdtdec_get_bool(blob, node, "doublescan"))
1033 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1034 if (fdtdec_get_bool(blob, node, "doubleclk"))
1035 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1036
Simon Glass04b9dd12016-05-05 07:28:21 -06001037 return ret;
Simon Glass12e67112015-04-14 21:03:21 -06001038}
1039
Michal Simek50c7b722020-07-10 13:16:50 +02001040int fdtdec_setup_mem_size_base(void)
Nathan Rossi623f6012016-12-19 00:03:34 +10001041{
Michal Simekc2f09502020-07-10 13:34:44 +02001042 int ret;
1043 ofnode mem;
1044 struct resource res;
Nathan Rossi623f6012016-12-19 00:03:34 +10001045
Michal Simekc2f09502020-07-10 13:34:44 +02001046 mem = ofnode_path("/memory");
1047 if (!ofnode_valid(mem)) {
Nathan Rossi623f6012016-12-19 00:03:34 +10001048 debug("%s: Missing /memory node\n", __func__);
1049 return -EINVAL;
1050 }
1051
Michal Simekc2f09502020-07-10 13:34:44 +02001052 ret = ofnode_read_resource(mem, 0, &res);
Nathan Rossi623f6012016-12-19 00:03:34 +10001053 if (ret != 0) {
1054 debug("%s: Unable to decode first memory bank\n", __func__);
1055 return -EINVAL;
1056 }
1057
1058 gd->ram_size = (phys_size_t)(res.end - res.start + 1);
Siva Durga Prasad Paladugu1473b122018-07-16 15:56:10 +05301059 gd->ram_base = (unsigned long)res.start;
Simon Glassc69380f2017-05-27 07:38:13 -06001060 debug("%s: Initial DRAM size %llx\n", __func__,
1061 (unsigned long long)gd->ram_size);
Nathan Rossi623f6012016-12-19 00:03:34 +10001062
1063 return 0;
1064}
1065
Michal Simekc2f09502020-07-10 13:34:44 +02001066ofnode get_next_memory_node(ofnode mem)
Jens Wiklander452bc122018-07-13 12:12:11 +02001067{
Jens Wiklander452bc122018-07-13 12:12:11 +02001068 do {
Michal Simekc2f09502020-07-10 13:34:44 +02001069 mem = ofnode_by_prop_value(mem, "device_type", "memory", 7);
1070 } while (!ofnode_is_available(mem));
Jens Wiklander452bc122018-07-13 12:12:11 +02001071
1072 return mem;
1073}
1074
Michal Simek62897c42020-07-10 13:16:49 +02001075int fdtdec_setup_memory_banksize(void)
Nathan Rossi623f6012016-12-19 00:03:34 +10001076{
Michal Simekc2f09502020-07-10 13:34:44 +02001077 int bank, ret, reg = 0;
1078 struct resource res;
1079 ofnode mem = ofnode_null();
Nathan Rossi623f6012016-12-19 00:03:34 +10001080
Michal Simekc2f09502020-07-10 13:34:44 +02001081 mem = get_next_memory_node(mem);
1082 if (!ofnode_valid(mem)) {
Michal Simek658954c2018-10-03 15:53:52 +02001083 debug("%s: Missing /memory node\n", __func__);
1084 return -EINVAL;
1085 }
Nathan Rossi623f6012016-12-19 00:03:34 +10001086
1087 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
Michal Simekc2f09502020-07-10 13:34:44 +02001088 ret = ofnode_read_resource(mem, reg++, &res);
1089 if (ret < 0) {
Marek Vasut942ee092017-11-27 05:32:42 +01001090 reg = 0;
Michal Simekc2f09502020-07-10 13:34:44 +02001091 mem = get_next_memory_node(mem);
Marek Vasut81d0cef2020-09-12 12:42:52 +02001092 if (!ofnode_valid(mem))
Michal Simek658954c2018-10-03 15:53:52 +02001093 break;
1094
Michal Simekc2f09502020-07-10 13:34:44 +02001095 ret = ofnode_read_resource(mem, reg++, &res);
1096 if (ret < 0)
Michal Simek658954c2018-10-03 15:53:52 +02001097 break;
1098 }
Michal Simekc2f09502020-07-10 13:34:44 +02001099
1100 if (ret != 0)
Michal Simek658954c2018-10-03 15:53:52 +02001101 return -EINVAL;
Nathan Rossi623f6012016-12-19 00:03:34 +10001102
1103 gd->bd->bi_dram[bank].start = (phys_addr_t)res.start;
1104 gd->bd->bi_dram[bank].size =
1105 (phys_size_t)(res.end - res.start + 1);
1106
1107 debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
1108 __func__, bank,
1109 (unsigned long long)gd->bd->bi_dram[bank].start,
1110 (unsigned long long)gd->bd->bi_dram[bank].size);
1111 }
1112
1113 return 0;
1114}
Michal Simek7fce7392020-07-09 14:09:52 +02001115
1116int fdtdec_setup_mem_size_base_lowest(void)
1117{
Michal Simekc2f09502020-07-10 13:34:44 +02001118 int bank, ret, reg = 0;
1119 struct resource res;
Michal Simek7fce7392020-07-09 14:09:52 +02001120 unsigned long base;
1121 phys_size_t size;
Michal Simekc2f09502020-07-10 13:34:44 +02001122 ofnode mem = ofnode_null();
Michal Simek7fce7392020-07-09 14:09:52 +02001123
1124 gd->ram_base = (unsigned long)~0;
1125
Michal Simekc2f09502020-07-10 13:34:44 +02001126 mem = get_next_memory_node(mem);
1127 if (!ofnode_valid(mem)) {
Michal Simek7fce7392020-07-09 14:09:52 +02001128 debug("%s: Missing /memory node\n", __func__);
1129 return -EINVAL;
1130 }
1131
1132 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
Michal Simekc2f09502020-07-10 13:34:44 +02001133 ret = ofnode_read_resource(mem, reg++, &res);
1134 if (ret < 0) {
Michal Simek7fce7392020-07-09 14:09:52 +02001135 reg = 0;
Michal Simekc2f09502020-07-10 13:34:44 +02001136 mem = get_next_memory_node(mem);
Marek Vasut81d0cef2020-09-12 12:42:52 +02001137 if (!ofnode_valid(mem))
Michal Simek7fce7392020-07-09 14:09:52 +02001138 break;
1139
Michal Simekc2f09502020-07-10 13:34:44 +02001140 ret = ofnode_read_resource(mem, reg++, &res);
1141 if (ret < 0)
Michal Simek7fce7392020-07-09 14:09:52 +02001142 break;
1143 }
Michal Simekc2f09502020-07-10 13:34:44 +02001144
Michal Simek7fce7392020-07-09 14:09:52 +02001145 if (ret != 0)
1146 return -EINVAL;
1147
1148 base = (unsigned long)res.start;
1149 size = (phys_size_t)(res.end - res.start + 1);
1150
1151 if (gd->ram_base > base && size) {
1152 gd->ram_base = base;
1153 gd->ram_size = size;
1154 debug("%s: Initial DRAM base %lx size %lx\n",
1155 __func__, base, (unsigned long)size);
1156 }
1157 }
1158
1159 return 0;
1160}
Nathan Rossi623f6012016-12-19 00:03:34 +10001161
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001162static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1163{
Simon Glassb4b6daf2021-12-16 20:59:25 -07001164#if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\
1165 CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO)
Marek Vasut95f4bbd2019-03-08 16:06:55 +01001166 size_t sz_out = CONFIG_VAL(MULTI_DTB_FIT_UNCOMPRESS_SZ);
Marek Vasut1fd30352019-03-13 21:11:22 +01001167 bool gzip = 0, lzo = 0;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001168 ulong sz_in = sz_src;
1169 void *dst;
1170 int rc;
1171
1172 if (CONFIG_IS_ENABLED(GZIP))
Marek Vasut1fd30352019-03-13 21:11:22 +01001173 if (gzip_parse_header(src, sz_in) >= 0)
1174 gzip = 1;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001175 if (CONFIG_IS_ENABLED(LZO))
Marek Vasut1fd30352019-03-13 21:11:22 +01001176 if (!gzip && lzop_is_valid_header(src))
1177 lzo = 1;
1178
1179 if (!gzip && !lzo)
1180 return -EBADMSG;
1181
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001182
1183 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) {
1184 dst = malloc(sz_out);
1185 if (!dst) {
1186 puts("uncompress_blob: Unable to allocate memory\n");
1187 return -ENOMEM;
1188 }
1189 } else {
Simon Glassb4b6daf2021-12-16 20:59:25 -07001190# if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001191 dst = (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR);
Simon Glassb4b6daf2021-12-16 20:59:25 -07001192# else
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001193 return -ENOTSUPP;
Simon Glassb4b6daf2021-12-16 20:59:25 -07001194# endif
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001195 }
1196
Marek Vasut1fd30352019-03-13 21:11:22 +01001197 if (CONFIG_IS_ENABLED(GZIP) && gzip)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001198 rc = gunzip(dst, sz_out, (u8 *)src, &sz_in);
Marek Vasut1fd30352019-03-13 21:11:22 +01001199 else if (CONFIG_IS_ENABLED(LZO) && lzo)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001200 rc = lzop_decompress(src, sz_in, dst, &sz_out);
Marek Vasut1fd30352019-03-13 21:11:22 +01001201 else
1202 hang();
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001203
1204 if (rc < 0) {
1205 /* not a valid compressed blob */
1206 puts("uncompress_blob: Unable to uncompress\n");
1207 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC))
1208 free(dst);
1209 return -EBADMSG;
1210 }
1211 *dstp = dst;
Simon Glassb4b6daf2021-12-16 20:59:25 -07001212#else
Marek Vasut410d9b62018-10-18 20:37:05 +02001213 *dstp = (void *)src;
Simon Glassb4b6daf2021-12-16 20:59:25 -07001214 *dstp = (void *)src;
1215#endif
Marek Vasut410d9b62018-10-18 20:37:05 +02001216 return 0;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001217}
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001218
Simon Glass98550342021-12-16 20:59:31 -07001219/**
1220 * fdt_find_separate() - Find a devicetree at the end of the image
1221 *
Heinrich Schuchardt185f8122022-01-19 18:05:50 +01001222 * Return: pointer to FDT blob
Rob Clark3b595da2018-01-10 11:34:37 +01001223 */
Simon Glass98550342021-12-16 20:59:31 -07001224static void *fdt_find_separate(void)
Rob Clark3b595da2018-01-10 11:34:37 +01001225{
1226 void *fdt_blob = NULL;
Ilias Apalodimase7fb7892021-10-26 09:12:33 +03001227
Rob Clark3b595da2018-01-10 11:34:37 +01001228#ifdef CONFIG_SPL_BUILD
1229 /* FDT is at end of BSS unless it is in a different memory region */
Tom Rinie31350c2021-02-14 14:08:17 -05001230 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
Rob Clark3b595da2018-01-10 11:34:37 +01001231 fdt_blob = (ulong *)&_image_binary_end;
1232 else
1233 fdt_blob = (ulong *)&__bss_end;
1234#else
1235 /* FDT is at end of image */
1236 fdt_blob = (ulong *)&_end;
1237#endif
Ilias Apalodimase7fb7892021-10-26 09:12:33 +03001238
Rob Clark3b595da2018-01-10 11:34:37 +01001239 return fdt_blob;
1240}
Rob Clark3b595da2018-01-10 11:34:37 +01001241
Thierry Redingebf30e82019-04-15 11:32:13 +02001242int fdtdec_set_ethernet_mac_address(void *fdt, const u8 *mac, size_t size)
1243{
1244 const char *path;
1245 int offset, err;
1246
1247 if (!is_valid_ethaddr(mac))
1248 return -EINVAL;
1249
1250 path = fdt_get_alias(fdt, "ethernet");
1251 if (!path)
1252 return 0;
1253
1254 debug("ethernet alias found: %s\n", path);
1255
1256 offset = fdt_path_offset(fdt, path);
1257 if (offset < 0) {
1258 debug("ethernet alias points to absent node %s\n", path);
1259 return -ENOENT;
1260 }
1261
1262 err = fdt_setprop_inplace(fdt, offset, "local-mac-address", mac, size);
1263 if (err < 0)
1264 return err;
1265
1266 debug("MAC address: %pM\n", mac);
1267
1268 return 0;
1269}
1270
Thierry Redingc9222a02019-03-21 19:10:02 +01001271static int fdtdec_init_reserved_memory(void *blob)
1272{
1273 int na, ns, node, err;
1274 fdt32_t value;
1275
1276 /* inherit #address-cells and #size-cells from the root node */
1277 na = fdt_address_cells(blob, 0);
1278 ns = fdt_size_cells(blob, 0);
1279
1280 node = fdt_add_subnode(blob, 0, "reserved-memory");
1281 if (node < 0)
1282 return node;
1283
1284 err = fdt_setprop(blob, node, "ranges", NULL, 0);
1285 if (err < 0)
1286 return err;
1287
1288 value = cpu_to_fdt32(ns);
1289
1290 err = fdt_setprop(blob, node, "#size-cells", &value, sizeof(value));
1291 if (err < 0)
1292 return err;
1293
1294 value = cpu_to_fdt32(na);
1295
1296 err = fdt_setprop(blob, node, "#address-cells", &value, sizeof(value));
1297 if (err < 0)
1298 return err;
1299
1300 return node;
1301}
1302
1303int fdtdec_add_reserved_memory(void *blob, const char *basename,
1304 const struct fdt_memory *carveout,
Thierry Reding46cb0672021-09-03 15:16:19 +02001305 const char **compatibles, unsigned int count,
Thierry Redingb9aad372021-09-03 15:16:21 +02001306 uint32_t *phandlep, unsigned long flags)
Thierry Redingc9222a02019-03-21 19:10:02 +01001307{
1308 fdt32_t cells[4] = {}, *ptr = cells;
1309 uint32_t upper, lower, phandle;
1310 int parent, node, na, ns, err;
Thierry Reding3bf2f152019-04-15 10:08:21 +02001311 fdt_size_t size;
Thierry Redingc9222a02019-03-21 19:10:02 +01001312 char name[64];
1313
1314 /* create an empty /reserved-memory node if one doesn't exist */
1315 parent = fdt_path_offset(blob, "/reserved-memory");
1316 if (parent < 0) {
1317 parent = fdtdec_init_reserved_memory(blob);
1318 if (parent < 0)
1319 return parent;
1320 }
1321
1322 /* only 1 or 2 #address-cells and #size-cells are supported */
1323 na = fdt_address_cells(blob, parent);
1324 if (na < 1 || na > 2)
1325 return -FDT_ERR_BADNCELLS;
1326
1327 ns = fdt_size_cells(blob, parent);
1328 if (ns < 1 || ns > 2)
1329 return -FDT_ERR_BADNCELLS;
1330
1331 /* find a matching node and return the phandle to that */
1332 fdt_for_each_subnode(node, blob, parent) {
1333 const char *name = fdt_get_name(blob, node, NULL);
Bin Menga9ad1132020-05-19 23:38:32 -07001334 fdt_addr_t addr;
1335 fdt_size_t size;
Thierry Redingc9222a02019-03-21 19:10:02 +01001336
Bin Mengf6704c72020-05-19 23:38:33 -07001337 addr = fdtdec_get_addr_size_fixed(blob, node, "reg", 0, na, ns,
1338 &size, false);
Thierry Redingc9222a02019-03-21 19:10:02 +01001339 if (addr == FDT_ADDR_T_NONE) {
1340 debug("failed to read address/size for %s\n", name);
1341 continue;
1342 }
1343
Atish Patraf6147532020-04-21 11:15:00 -07001344 if (addr == carveout->start && (addr + size - 1) ==
1345 carveout->end) {
Heiko Stuebner086336a2019-10-23 16:46:38 +02001346 if (phandlep)
1347 *phandlep = fdt_get_phandle(blob, node);
Thierry Redingc9222a02019-03-21 19:10:02 +01001348 return 0;
1349 }
1350 }
1351
1352 /*
1353 * Unpack the start address and generate the name of the new node
1354 * base on the basename and the unit-address.
1355 */
Thierry Reding3bf2f152019-04-15 10:08:21 +02001356 upper = upper_32_bits(carveout->start);
1357 lower = lower_32_bits(carveout->start);
Thierry Redingc9222a02019-03-21 19:10:02 +01001358
1359 if (na > 1 && upper > 0)
1360 snprintf(name, sizeof(name), "%s@%x,%x", basename, upper,
1361 lower);
1362 else {
1363 if (upper > 0) {
1364 debug("address %08x:%08x exceeds addressable space\n",
1365 upper, lower);
1366 return -FDT_ERR_BADVALUE;
1367 }
1368
1369 snprintf(name, sizeof(name), "%s@%x", basename, lower);
1370 }
1371
1372 node = fdt_add_subnode(blob, parent, name);
1373 if (node < 0)
1374 return node;
1375
Thierry Redingb9aad372021-09-03 15:16:21 +02001376 if (flags & FDTDEC_RESERVED_MEMORY_NO_MAP) {
1377 err = fdt_setprop(blob, node, "no-map", NULL, 0);
1378 if (err < 0)
1379 return err;
1380 }
1381
Heiko Stuebner357d2ce2019-10-23 16:46:39 +02001382 if (phandlep) {
1383 err = fdt_generate_phandle(blob, &phandle);
1384 if (err < 0)
1385 return err;
Thierry Redingc9222a02019-03-21 19:10:02 +01001386
Heiko Stuebner357d2ce2019-10-23 16:46:39 +02001387 err = fdtdec_set_phandle(blob, node, phandle);
1388 if (err < 0)
1389 return err;
1390 }
Thierry Redingc9222a02019-03-21 19:10:02 +01001391
1392 /* store one or two address cells */
1393 if (na > 1)
1394 *ptr++ = cpu_to_fdt32(upper);
1395
1396 *ptr++ = cpu_to_fdt32(lower);
1397
1398 /* store one or two size cells */
Thierry Reding3bf2f152019-04-15 10:08:21 +02001399 size = carveout->end - carveout->start + 1;
1400 upper = upper_32_bits(size);
1401 lower = lower_32_bits(size);
Thierry Redingc9222a02019-03-21 19:10:02 +01001402
1403 if (ns > 1)
1404 *ptr++ = cpu_to_fdt32(upper);
1405
1406 *ptr++ = cpu_to_fdt32(lower);
1407
1408 err = fdt_setprop(blob, node, "reg", cells, (na + ns) * sizeof(*cells));
1409 if (err < 0)
1410 return err;
1411
Thierry Reding46cb0672021-09-03 15:16:19 +02001412 if (compatibles && count > 0) {
1413 size_t length = 0, len = 0;
1414 unsigned int i;
1415 char *buffer;
1416
1417 for (i = 0; i < count; i++)
1418 length += strlen(compatibles[i]) + 1;
1419
1420 buffer = malloc(length);
1421 if (!buffer)
1422 return -FDT_ERR_INTERNAL;
1423
1424 for (i = 0; i < count; i++)
1425 len += strlcpy(buffer + len, compatibles[i],
1426 length - len) + 1;
1427
1428 err = fdt_setprop(blob, node, "compatible", buffer, length);
1429 free(buffer);
1430 if (err < 0)
1431 return err;
1432 }
1433
Thierry Redingc9222a02019-03-21 19:10:02 +01001434 /* return the phandle for the new node for the caller to use */
1435 if (phandlep)
1436 *phandlep = phandle;
1437
1438 return 0;
1439}
1440
Thierry Reding4bf88ba2021-09-03 15:16:18 +02001441int fdtdec_get_carveout(const void *blob, const char *node,
1442 const char *prop_name, unsigned int index,
Thierry Reding46cb0672021-09-03 15:16:19 +02001443 struct fdt_memory *carveout, const char **name,
Thierry Redingb9aad372021-09-03 15:16:21 +02001444 const char ***compatiblesp, unsigned int *countp,
1445 unsigned long *flags)
Thierry Reding16523ac2019-03-21 19:10:03 +01001446{
1447 const fdt32_t *prop;
1448 uint32_t phandle;
1449 int offset, len;
1450 fdt_size_t size;
1451
1452 offset = fdt_path_offset(blob, node);
1453 if (offset < 0)
1454 return offset;
1455
Thierry Reding4bf88ba2021-09-03 15:16:18 +02001456 prop = fdt_getprop(blob, offset, prop_name, &len);
Thierry Reding16523ac2019-03-21 19:10:03 +01001457 if (!prop) {
Thierry Reding4bf88ba2021-09-03 15:16:18 +02001458 debug("failed to get %s for %s\n", prop_name, node);
Thierry Reding16523ac2019-03-21 19:10:03 +01001459 return -FDT_ERR_NOTFOUND;
1460 }
1461
1462 if ((len % sizeof(phandle)) != 0) {
1463 debug("invalid phandle property\n");
1464 return -FDT_ERR_BADPHANDLE;
1465 }
1466
1467 if (len < (sizeof(phandle) * (index + 1))) {
1468 debug("invalid phandle index\n");
Thierry Redingd5598cf2021-09-03 15:16:17 +02001469 return -FDT_ERR_NOTFOUND;
Thierry Reding16523ac2019-03-21 19:10:03 +01001470 }
1471
1472 phandle = fdt32_to_cpu(prop[index]);
1473
1474 offset = fdt_node_offset_by_phandle(blob, phandle);
1475 if (offset < 0) {
1476 debug("failed to find node for phandle %u\n", phandle);
1477 return offset;
1478 }
1479
Thierry Reding4bf88ba2021-09-03 15:16:18 +02001480 if (name)
1481 *name = fdt_get_name(blob, offset, NULL);
1482
Thierry Reding46cb0672021-09-03 15:16:19 +02001483 if (compatiblesp) {
1484 const char **compatibles = NULL;
1485 const char *start, *end, *ptr;
1486 unsigned int count = 0;
1487
1488 prop = fdt_getprop(blob, offset, "compatible", &len);
1489 if (!prop)
1490 goto skip_compat;
1491
1492 start = ptr = (const char *)prop;
1493 end = start + len;
1494
1495 while (ptr < end) {
1496 ptr = strchrnul(ptr, '\0');
1497 count++;
1498 ptr++;
1499 }
1500
1501 compatibles = malloc(sizeof(ptr) * count);
1502 if (!compatibles)
1503 return -FDT_ERR_INTERNAL;
1504
1505 ptr = start;
1506 count = 0;
1507
1508 while (ptr < end) {
1509 compatibles[count] = ptr;
1510 ptr = strchrnul(ptr, '\0');
1511 count++;
1512 ptr++;
1513 }
1514
1515skip_compat:
1516 *compatiblesp = compatibles;
1517
1518 if (countp)
1519 *countp = count;
1520 }
1521
Thierry Reding16523ac2019-03-21 19:10:03 +01001522 carveout->start = fdtdec_get_addr_size_auto_noparent(blob, offset,
1523 "reg", 0, &size,
1524 true);
1525 if (carveout->start == FDT_ADDR_T_NONE) {
1526 debug("failed to read address/size from \"reg\" property\n");
1527 return -FDT_ERR_NOTFOUND;
1528 }
1529
1530 carveout->end = carveout->start + size - 1;
1531
Thierry Redingb9aad372021-09-03 15:16:21 +02001532 if (flags) {
1533 *flags = 0;
1534
1535 if (fdtdec_get_bool(blob, offset, "no-map"))
1536 *flags |= FDTDEC_RESERVED_MEMORY_NO_MAP;
1537 }
1538
Thierry Reding16523ac2019-03-21 19:10:03 +01001539 return 0;
1540}
1541
1542int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name,
Thierry Reding90194872021-09-03 15:16:20 +02001543 unsigned int index, const struct fdt_memory *carveout,
1544 const char *name, const char **compatibles,
Thierry Redingb9aad372021-09-03 15:16:21 +02001545 unsigned int count, unsigned long flags)
Thierry Reding16523ac2019-03-21 19:10:03 +01001546{
1547 uint32_t phandle;
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001548 int err, offset, len;
Thierry Reding16523ac2019-03-21 19:10:03 +01001549 fdt32_t value;
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001550 void *prop;
Thierry Reding16523ac2019-03-21 19:10:03 +01001551
Thierry Reding46cb0672021-09-03 15:16:19 +02001552 err = fdtdec_add_reserved_memory(blob, name, carveout, compatibles,
Thierry Redingb9aad372021-09-03 15:16:21 +02001553 count, &phandle, flags);
Thierry Reding16523ac2019-03-21 19:10:03 +01001554 if (err < 0) {
1555 debug("failed to add reserved memory: %d\n", err);
1556 return err;
1557 }
1558
1559 offset = fdt_path_offset(blob, node);
1560 if (offset < 0) {
1561 debug("failed to find offset for node %s: %d\n", node, offset);
1562 return offset;
1563 }
1564
1565 value = cpu_to_fdt32(phandle);
1566
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001567 if (!fdt_getprop(blob, offset, prop_name, &len)) {
1568 if (len == -FDT_ERR_NOTFOUND)
1569 len = 0;
1570 else
1571 return len;
1572 }
1573
1574 if ((index + 1) * sizeof(value) > len) {
1575 err = fdt_setprop_placeholder(blob, offset, prop_name,
1576 (index + 1) * sizeof(value),
1577 &prop);
1578 if (err < 0) {
1579 debug("failed to resize reserved memory property: %s\n",
1580 fdt_strerror(err));
1581 return err;
1582 }
1583 }
1584
1585 err = fdt_setprop_inplace_namelen_partial(blob, offset, prop_name,
1586 strlen(prop_name),
1587 index * sizeof(value),
1588 &value, sizeof(value));
Thierry Reding16523ac2019-03-21 19:10:03 +01001589 if (err < 0) {
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001590 debug("failed to update %s property for node %s: %s\n",
1591 prop_name, node, fdt_strerror(err));
Thierry Reding16523ac2019-03-21 19:10:03 +01001592 return err;
1593 }
1594
1595 return 0;
1596}
1597
Simon Glass275b4832021-12-16 20:59:35 -07001598/* TODO(sjg@chromium.org): This function should not be weak */
Marek Vasut0e2afc82020-04-11 21:18:59 +02001599__weak int fdtdec_board_setup(const void *fdt_blob)
1600{
1601 return 0;
1602}
1603
Simon Glass3f51f782021-12-16 20:59:24 -07001604/**
1605 * setup_multi_dtb_fit() - locate the correct dtb from a FIT
1606 *
1607 * This supports the CONFIG_MULTI_DTB_FIT feature, looking for the dtb in a
1608 * supplied FIT
1609 *
1610 * It accepts the current value of gd->fdt_blob, which points to the FIT, then
1611 * updates that gd->fdt_blob, to point to the chosen dtb so that U-Boot uses the
1612 * correct one
1613 */
1614static void setup_multi_dtb_fit(void)
1615{
Simon Glass3f51f782021-12-16 20:59:24 -07001616 void *blob;
1617
1618 /*
1619 * Try and uncompress the blob.
1620 * Unfortunately there is no way to know how big the input blob really
1621 * is. So let us set the maximum input size arbitrarily high. 16MB
1622 * ought to be more than enough for packed DTBs.
1623 */
1624 if (uncompress_blob(gd->fdt_blob, 0x1000000, &blob) == 0)
1625 gd->fdt_blob = blob;
1626
1627 /*
1628 * Check if blob is a FIT images containings DTBs.
1629 * If so, pick the most relevant
1630 */
1631 blob = locate_dtb_in_fit(gd->fdt_blob);
1632 if (blob) {
Simon Glassb4b6daf2021-12-16 20:59:25 -07001633 gd_set_multi_dtb_fit(gd->fdt_blob);
Simon Glass3f51f782021-12-16 20:59:24 -07001634 gd->fdt_blob = blob;
Simon Glass39605c62021-12-16 20:59:33 -07001635 gd->fdt_src = FDTSRC_FIT;
Simon Glass3f51f782021-12-16 20:59:24 -07001636 }
Simon Glass3f51f782021-12-16 20:59:24 -07001637}
1638
Simon Glass08793612015-02-27 22:06:35 -07001639int fdtdec_setup(void)
Simon Glassb45122f2015-02-27 22:06:34 -07001640{
Marek Vasut0e2afc82020-04-11 21:18:59 +02001641 int ret;
Simon Glassba83d852021-12-16 20:59:30 -07001642
1643 /* The devicetree is typically appended to U-Boot */
Simon Glass39605c62021-12-16 20:59:33 -07001644 if (IS_ENABLED(CONFIG_OF_SEPARATE)) {
Simon Glass98550342021-12-16 20:59:31 -07001645 gd->fdt_blob = fdt_find_separate();
Simon Glass39605c62021-12-16 20:59:33 -07001646 gd->fdt_src = FDTSRC_SEPARATE;
1647 } else { /* embed dtb in ELF file for testing / development */
Simon Glass98550342021-12-16 20:59:31 -07001648 gd->fdt_blob = dtb_dt_embedded();
Simon Glass39605c62021-12-16 20:59:33 -07001649 gd->fdt_src = FDTSRC_EMBED;
1650 }
Simon Glass98550342021-12-16 20:59:31 -07001651
1652 /* Allow the board to override the fdt address. */
1653 if (IS_ENABLED(CONFIG_OF_BOARD)) {
Simon Glassba83d852021-12-16 20:59:30 -07001654 gd->fdt_blob = board_fdt_blob_setup(&ret);
1655 if (ret)
1656 return ret;
Simon Glass39605c62021-12-16 20:59:33 -07001657 gd->fdt_src = FDTSRC_BOARD;
Simon Glassba83d852021-12-16 20:59:30 -07001658 }
1659
Simon Glass39605c62021-12-16 20:59:33 -07001660 /* Allow the early environment to override the fdt address */
Simon Glass931511d2021-12-16 20:59:28 -07001661 if (!IS_ENABLED(CONFIG_SPL_BUILD)) {
Simon Glass39605c62021-12-16 20:59:33 -07001662 ulong addr;
1663
1664 addr = env_get_hex("fdtcontroladdr", 0);
1665 if (addr) {
1666 gd->fdt_blob = map_sysmem(addr, 0);
1667 gd->fdt_src = FDTSRC_ENV;
1668 }
Simon Glass931511d2021-12-16 20:59:28 -07001669 }
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001670
Simon Glass3f51f782021-12-16 20:59:24 -07001671 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT))
1672 setup_multi_dtb_fit();
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001673
Marek Vasut0e2afc82020-04-11 21:18:59 +02001674 ret = fdtdec_prepare_fdt();
1675 if (!ret)
1676 ret = fdtdec_board_setup(gd->fdt_blob);
1677 return ret;
Simon Glassb45122f2015-02-27 22:06:34 -07001678}
1679
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001680int fdtdec_resetup(int *rescan)
1681{
1682 void *fdt_blob;
1683
1684 /*
1685 * If the current DTB is part of a compressed FIT image,
1686 * try to locate the best match from the uncompressed
1687 * FIT image stillpresent there. Save the time and space
1688 * required to uncompress it again.
1689 */
Simon Glassb4b6daf2021-12-16 20:59:25 -07001690 if (gd_multi_dtb_fit()) {
1691 fdt_blob = locate_dtb_in_fit(gd_multi_dtb_fit());
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001692
1693 if (fdt_blob == gd->fdt_blob) {
1694 /*
1695 * The best match did not change. no need to tear down
1696 * the DM and rescan the fdt.
1697 */
1698 *rescan = 0;
1699 return 0;
1700 }
1701
1702 *rescan = 1;
1703 gd->fdt_blob = fdt_blob;
1704 return fdtdec_prepare_fdt();
1705 }
1706
1707 /*
1708 * If multi_dtb_fit is NULL, it means that blob appended to u-boot is
1709 * not a FIT image containings DTB, but a single DTB. There is no need
1710 * to teard down DM and rescan the DT in this case.
1711 */
1712 *rescan = 0;
1713 return 0;
1714}
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001715
Michael Pratt90c08fa2018-06-11 13:07:09 -06001716int fdtdec_decode_ram_size(const void *blob, const char *area, int board_id,
Masahiro Yamadab75d8dc2020-06-26 15:13:33 +09001717 phys_addr_t *basep, phys_size_t *sizep,
1718 struct bd_info *bd)
Michael Pratt90c08fa2018-06-11 13:07:09 -06001719{
1720 int addr_cells, size_cells;
1721 const u32 *cell, *end;
1722 u64 total_size, size, addr;
1723 int node, child;
1724 bool auto_size;
1725 int bank;
1726 int len;
1727
1728 debug("%s: board_id=%d\n", __func__, board_id);
1729 if (!area)
1730 area = "/memory";
1731 node = fdt_path_offset(blob, area);
1732 if (node < 0) {
1733 debug("No %s node found\n", area);
1734 return -ENOENT;
1735 }
1736
1737 cell = fdt_getprop(blob, node, "reg", &len);
1738 if (!cell) {
1739 debug("No reg property found\n");
1740 return -ENOENT;
1741 }
1742
1743 addr_cells = fdt_address_cells(blob, node);
1744 size_cells = fdt_size_cells(blob, node);
1745
1746 /* Check the board id and mask */
1747 for (child = fdt_first_subnode(blob, node);
1748 child >= 0;
1749 child = fdt_next_subnode(blob, child)) {
1750 int match_mask, match_value;
1751
1752 match_mask = fdtdec_get_int(blob, child, "match-mask", -1);
1753 match_value = fdtdec_get_int(blob, child, "match-value", -1);
1754
1755 if (match_value >= 0 &&
1756 ((board_id & match_mask) == match_value)) {
1757 /* Found matching mask */
1758 debug("Found matching mask %d\n", match_mask);
1759 node = child;
1760 cell = fdt_getprop(blob, node, "reg", &len);
1761 if (!cell) {
1762 debug("No memory-banks property found\n");
1763 return -EINVAL;
1764 }
1765 break;
1766 }
1767 }
1768 /* Note: if no matching subnode was found we use the parent node */
1769
1770 if (bd) {
1771 memset(bd->bi_dram, '\0', sizeof(bd->bi_dram[0]) *
1772 CONFIG_NR_DRAM_BANKS);
1773 }
1774
1775 auto_size = fdtdec_get_bool(blob, node, "auto-size");
1776
1777 total_size = 0;
1778 end = cell + len / 4 - addr_cells - size_cells;
1779 debug("cell at %p, end %p\n", cell, end);
1780 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
1781 if (cell > end)
1782 break;
1783 addr = 0;
1784 if (addr_cells == 2)
1785 addr += (u64)fdt32_to_cpu(*cell++) << 32UL;
1786 addr += fdt32_to_cpu(*cell++);
1787 if (bd)
1788 bd->bi_dram[bank].start = addr;
1789 if (basep && !bank)
1790 *basep = (phys_addr_t)addr;
1791
1792 size = 0;
1793 if (size_cells == 2)
1794 size += (u64)fdt32_to_cpu(*cell++) << 32UL;
1795 size += fdt32_to_cpu(*cell++);
1796
1797 if (auto_size) {
1798 u64 new_size;
1799
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001800 debug("Auto-sizing %llx, size %llx: ", addr, size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001801 new_size = get_ram_size((long *)(uintptr_t)addr, size);
1802 if (new_size == size) {
1803 debug("OK\n");
1804 } else {
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001805 debug("sized to %llx\n", new_size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001806 size = new_size;
1807 }
1808 }
1809
1810 if (bd)
1811 bd->bi_dram[bank].size = size;
1812 total_size += size;
1813 }
1814
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001815 debug("Memory size %llu\n", total_size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001816 if (sizep)
1817 *sizep = (phys_size_t)total_size;
1818
1819 return 0;
1820}
Michael Pratt90c08fa2018-06-11 13:07:09 -06001821
Simon Glassb45122f2015-02-27 22:06:34 -07001822#endif /* !USE_HOSTCC */