blob: 0ab7105fef0d4cacfb86637a3976dfed2f83f5e9 [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>
24#include <asm/sections.h>
Simon Glass5c33c9f2014-07-23 06:55:09 -060025#include <linux/ctype.h>
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +020026#include <linux/lzo.h>
Michal Simekc2f09502020-07-10 13:34:44 +020027#include <linux/ioport.h>
Simon Glassb5220bc2011-10-24 19:15:32 +000028
29DECLARE_GLOBAL_DATA_PTR;
30
31/*
32 * Here are the type we know about. One day we might allow drivers to
33 * register. For now we just put them here. The COMPAT macro allows us to
34 * turn this into a sparse list later, and keeps the ID with the name.
Simon Glass01a227d2016-06-19 17:33:13 -060035 *
36 * NOTE: This list is basically a TODO list for things that need to be
37 * converted to driver model. So don't add new things here unless there is a
38 * good reason why driver-model conversion is infeasible. Examples include
39 * things which are used before driver model is available.
Simon Glassb5220bc2011-10-24 19:15:32 +000040 */
41#define COMPAT(id, name) name
42static const char * const compat_names[COMPAT_COUNT] = {
Simon Glassf88fe2d2012-02-27 10:52:34 +000043 COMPAT(UNKNOWN, "<none>"),
Jimmy Zhang0e35ad02012-04-02 13:18:52 +000044 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
45 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
Jim Lin312693c2012-07-29 20:53:29 +000046 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
Thierry Reding79c7a902014-12-09 22:25:09 -070047 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070048 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
Hatim RVcc9fe332012-12-11 00:52:46 +000049 COMPAT(SMSC_LAN9215, "smsc,lan9215"),
50 COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
Rajeshwari Shinde6abd1622013-01-07 23:35:05 +000051 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
Vivek Gautam108b85b2013-09-14 14:02:48 +053052 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
Akshay Saraswat618766c2013-02-25 01:13:01 +000053 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
Piotr Wilczekde461c52014-03-07 14:59:39 +010054 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
Jaehoon Chung7d3ca0f2014-05-16 13:59:51 +090055 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
Neil Armstrong51e4e3e2019-02-10 10:16:21 +000056 COMPAT(GENERIC_SPI_FLASH, "jedec,spi-nor"),
Ajay Kumar45c480c2014-09-05 16:53:33 +053057 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
Simon Glass77f9b1f2014-11-12 22:42:21 -070058 COMPAT(INTEL_MICROCODE, "intel,microcode"),
Bin Mengc89ada02015-02-05 23:42:26 +080059 COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
Marek Vasut6ab00db2015-07-25 19:33:56 +020060 COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
Marek Vasut129adf52015-07-25 10:48:14 +020061 COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"),
Marek Vasutef4b01b2015-12-05 19:28:44 +010062 COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"),
Simon Glass39ea0ee2016-06-19 17:33:14 -060063 COMPAT(INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"),
64 COMPAT(INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"),
65 COMPAT(INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"),
Boris Brezillon4ccae812016-06-15 21:09:23 +020066 COMPAT(COMPAT_SUNXI_NAND, "allwinner,sun4i-a10-nand"),
Ley Foon Tane11b5e82017-04-05 17:32:47 +080067 COMPAT(ALTERA_SOCFPGA_CLK, "altr,clk-mgr"),
68 COMPAT(ALTERA_SOCFPGA_PINCTRL_SINGLE, "pinctrl-single"),
69 COMPAT(ALTERA_SOCFPGA_H2F_BRG, "altr,socfpga-hps2fpga-bridge"),
70 COMPAT(ALTERA_SOCFPGA_LWH2F_BRG, "altr,socfpga-lwhps2fpga-bridge"),
71 COMPAT(ALTERA_SOCFPGA_F2H_BRG, "altr,socfpga-fpga2hps-bridge"),
72 COMPAT(ALTERA_SOCFPGA_F2SDR0, "altr,socfpga-fpga2sdram0-bridge"),
73 COMPAT(ALTERA_SOCFPGA_F2SDR1, "altr,socfpga-fpga2sdram1-bridge"),
74 COMPAT(ALTERA_SOCFPGA_F2SDR2, "altr,socfpga-fpga2sdram2-bridge"),
Tien Fong Cheeeb57c0b2017-09-25 16:40:03 +080075 COMPAT(ALTERA_SOCFPGA_FPGA0, "altr,socfpga-a10-fpga-mgr"),
76 COMPAT(ALTERA_SOCFPGA_NOC, "altr,socfpga-a10-noc"),
Marek Vasut19c8fc72018-05-12 11:56:10 +020077 COMPAT(ALTERA_SOCFPGA_CLK_INIT, "altr,socfpga-a10-clk-init")
Simon Glassb5220bc2011-10-24 19:15:32 +000078};
79
Simon Glassa53f4a22012-01-17 08:20:50 +000080const char *fdtdec_get_compatible(enum fdt_compat_id id)
81{
82 /* We allow reading of the 'unknown' ID for testing purposes */
83 assert(id >= 0 && id < COMPAT_COUNT);
84 return compat_names[id];
85}
86
Stephen Warren02464e32015-08-06 15:31:02 -060087fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +010088 const char *prop_name, int index, int na,
89 int ns, fdt_size_t *sizep,
90 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -060091{
92 const fdt32_t *prop, *prop_end;
93 const fdt32_t *prop_addr, *prop_size, *prop_after_size;
94 int len;
95 fdt_addr_t addr;
96
97 debug("%s: %s: ", __func__, prop_name);
98
Stephen Warren02464e32015-08-06 15:31:02 -060099 prop = fdt_getprop(blob, node, prop_name, &len);
100 if (!prop) {
101 debug("(not found)\n");
102 return FDT_ADDR_T_NONE;
103 }
104 prop_end = prop + (len / sizeof(*prop));
105
106 prop_addr = prop + (index * (na + ns));
107 prop_size = prop_addr + na;
108 prop_after_size = prop_size + ns;
109 if (prop_after_size > prop_end) {
110 debug("(not enough data: expected >= %d cells, got %d cells)\n",
111 (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
112 return FDT_ADDR_T_NONE;
113 }
114
Vignesh R5efa1bf2017-03-20 10:04:38 +0530115#if CONFIG_IS_ENABLED(OF_TRANSLATE)
Stephen Warren6e06acb2016-08-05 09:47:51 -0600116 if (translate)
117 addr = fdt_translate_address(blob, node, prop_addr);
118 else
119#endif
120 addr = fdtdec_get_number(prop_addr, na);
Stephen Warren02464e32015-08-06 15:31:02 -0600121
122 if (sizep) {
123 *sizep = fdtdec_get_number(prop_size, ns);
Simon Glassfd30d2c2016-02-29 15:25:37 -0700124 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
125 (unsigned long long)*sizep);
Stephen Warren02464e32015-08-06 15:31:02 -0600126 } else {
Simon Glassfd30d2c2016-02-29 15:25:37 -0700127 debug("addr=%08llx\n", (unsigned long long)addr);
Stephen Warren02464e32015-08-06 15:31:02 -0600128 }
129
130 return addr;
131}
132
133fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
Mario Six2e386622018-01-15 11:07:35 +0100134 int node, const char *prop_name,
135 int index, fdt_size_t *sizep,
136 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600137{
138 int na, ns;
139
140 debug("%s: ", __func__);
141
142 na = fdt_address_cells(blob, parent);
143 if (na < 1) {
144 debug("(bad #address-cells)\n");
145 return FDT_ADDR_T_NONE;
146 }
147
148 ns = fdt_size_cells(blob, parent);
Przemyslaw Marczakff0a6352015-09-30 13:14:50 +0200149 if (ns < 0) {
Stephen Warren02464e32015-08-06 15:31:02 -0600150 debug("(bad #size-cells)\n");
151 return FDT_ADDR_T_NONE;
152 }
153
154 debug("na=%d, ns=%d, ", na, ns);
155
156 return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600157 ns, sizep, translate);
Stephen Warren02464e32015-08-06 15:31:02 -0600158}
159
160fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100161 const char *prop_name, int index,
162 fdt_size_t *sizep,
163 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600164{
165 int parent;
166
167 debug("%s: ", __func__);
168
169 parent = fdt_parent_offset(blob, node);
170 if (parent < 0) {
171 debug("(no parent found)\n");
172 return FDT_ADDR_T_NONE;
173 }
174
175 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600176 index, sizep, translate);
Stephen Warren02464e32015-08-06 15:31:02 -0600177}
178
Simon Glass4397a2a2013-03-19 04:58:51 +0000179fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100180 const char *prop_name, fdt_size_t *sizep)
Simon Glassb5220bc2011-10-24 19:15:32 +0000181{
Stephen Warrend93b9a02015-09-25 10:11:41 -0600182 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
183
Stephen Warren02464e32015-08-06 15:31:02 -0600184 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
185 sizeof(fdt_addr_t) / sizeof(fdt32_t),
Stephen Warren6e06acb2016-08-05 09:47:51 -0600186 ns, sizep, false);
Simon Glassb5220bc2011-10-24 19:15:32 +0000187}
188
Mario Six2e386622018-01-15 11:07:35 +0100189fdt_addr_t fdtdec_get_addr(const void *blob, int node, const char *prop_name)
Simon Glass4397a2a2013-03-19 04:58:51 +0000190{
191 return fdtdec_get_addr_size(blob, node, prop_name, NULL);
192}
193
Sekhar Norid50d6812018-12-06 15:40:08 +0530194#if CONFIG_IS_ENABLED(PCI) && defined(CONFIG_DM_PCI)
Bin Menga62e84d2014-12-31 16:05:11 +0800195int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
196{
197 const char *list, *end;
198 int len;
199
200 list = fdt_getprop(blob, node, "compatible", &len);
201 if (!list)
202 return -ENOENT;
203
204 end = list + len;
205 while (list < end) {
Bin Menga62e84d2014-12-31 16:05:11 +0800206 len = strlen(list);
207 if (len >= strlen("pciVVVV,DDDD")) {
Mario Sixb79221a2018-01-15 11:07:36 +0100208 char *s = strstr(list, "pci");
Bin Menga62e84d2014-12-31 16:05:11 +0800209
210 /*
211 * check if the string is something like pciVVVV,DDDD.RR
212 * or just pciVVVV,DDDD
213 */
214 if (s && s[7] == ',' &&
215 (s[12] == '.' || s[12] == 0)) {
216 s += 3;
217 *vendor = simple_strtol(s, NULL, 16);
218
219 s += 5;
220 *device = simple_strtol(s, NULL, 16);
221
222 return 0;
223 }
Bin Menga62e84d2014-12-31 16:05:11 +0800224 }
Bin Mengbc6351e2015-08-20 06:40:25 -0700225 list += (len + 1);
Bin Menga62e84d2014-12-31 16:05:11 +0800226 }
227
228 return -ENOENT;
229}
230
Simon Glass194fca92020-01-27 08:49:38 -0700231int fdtdec_get_pci_bar32(const struct udevice *dev, struct fdt_pci_addr *addr,
Simon Glassfcc0a872015-11-29 13:17:54 -0700232 u32 *bar)
Bin Menga62e84d2014-12-31 16:05:11 +0800233{
Bin Menga62e84d2014-12-31 16:05:11 +0800234 int barnum;
Bin Menga62e84d2014-12-31 16:05:11 +0800235
236 /* extract the bar number from fdt_pci_addr */
237 barnum = addr->phys_hi & 0xff;
Mario Sixb79221a2018-01-15 11:07:36 +0100238 if (barnum < PCI_BASE_ADDRESS_0 || barnum > PCI_CARDBUS_CIS)
Bin Menga62e84d2014-12-31 16:05:11 +0800239 return -EINVAL;
240
241 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
Simon Glassfcc0a872015-11-29 13:17:54 -0700242 *bar = dm_pci_read_bar32(dev, barnum);
Bin Menga62e84d2014-12-31 16:05:11 +0800243
244 return 0;
245}
Suneel Garapati1db7ee42019-10-19 15:19:35 -0700246
247int fdtdec_get_pci_bus_range(const void *blob, int node,
248 struct fdt_resource *res)
249{
250 const u32 *values;
251 int len;
252
253 values = fdt_getprop(blob, node, "bus-range", &len);
254 if (!values || len < sizeof(*values) * 2)
255 return -EINVAL;
256
257 res->start = fdt32_to_cpu(*values++);
258 res->end = fdt32_to_cpu(*values);
259
260 return 0;
261}
Bin Menga62e84d2014-12-31 16:05:11 +0800262#endif
263
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000264uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100265 uint64_t default_val)
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000266{
Jean-Jacques Hiblotd60ae4c2019-10-22 10:05:22 +0200267 const unaligned_fdt64_t *cell64;
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000268 int length;
269
270 cell64 = fdt_getprop(blob, node, prop_name, &length);
271 if (!cell64 || length < sizeof(*cell64))
272 return default_val;
273
274 return fdt64_to_cpu(*cell64);
275}
276
Simon Glassf88fe2d2012-02-27 10:52:34 +0000277int fdtdec_get_is_enabled(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000278{
279 const char *cell;
280
Simon Glassf88fe2d2012-02-27 10:52:34 +0000281 /*
282 * It should say "okay", so only allow that. Some fdts use "ok" but
283 * this is a bug. Please fix your device tree source file. See here
284 * for discussion:
285 *
286 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
287 */
Simon Glassb5220bc2011-10-24 19:15:32 +0000288 cell = fdt_getprop(blob, node, "status", NULL);
289 if (cell)
Mario Sixb79221a2018-01-15 11:07:36 +0100290 return strcmp(cell, "okay") == 0;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000291 return 1;
Simon Glassb5220bc2011-10-24 19:15:32 +0000292}
293
Gerald Van Baren7cde3972012-11-12 23:13:54 -0500294enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000295{
296 enum fdt_compat_id id;
297
298 /* Search our drivers */
299 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
Mario Sixb79221a2018-01-15 11:07:36 +0100300 if (fdt_node_check_compatible(blob, node,
301 compat_names[id]) == 0)
Simon Glassb5220bc2011-10-24 19:15:32 +0000302 return id;
303 return COMPAT_UNKNOWN;
304}
305
Mario Six2e386622018-01-15 11:07:35 +0100306int fdtdec_next_compatible(const void *blob, int node, enum fdt_compat_id id)
Simon Glassb5220bc2011-10-24 19:15:32 +0000307{
308 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
309}
310
Simon Glass3ddecfc2012-04-02 13:18:42 +0000311int fdtdec_next_compatible_subnode(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100312 enum fdt_compat_id id, int *depthp)
Simon Glass3ddecfc2012-04-02 13:18:42 +0000313{
314 do {
315 node = fdt_next_node(blob, node, depthp);
316 } while (*depthp > 1);
317
318 /* If this is a direct subnode, and compatible, return it */
319 if (*depthp == 1 && 0 == fdt_node_check_compatible(
320 blob, node, compat_names[id]))
321 return node;
322
323 return -FDT_ERR_NOTFOUND;
324}
325
Mario Six2e386622018-01-15 11:07:35 +0100326int fdtdec_next_alias(const void *blob, const char *name, enum fdt_compat_id id,
327 int *upto)
Simon Glassb5220bc2011-10-24 19:15:32 +0000328{
329#define MAX_STR_LEN 20
330 char str[MAX_STR_LEN + 20];
331 int node, err;
332
333 /* snprintf() is not available */
334 assert(strlen(name) < MAX_STR_LEN);
335 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
Simon Glass00878472012-10-31 14:02:42 +0000336 node = fdt_path_offset(blob, str);
Simon Glassb5220bc2011-10-24 19:15:32 +0000337 if (node < 0)
338 return node;
339 err = fdt_node_check_compatible(blob, node, compat_names[id]);
340 if (err < 0)
341 return err;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000342 if (err)
343 return -FDT_ERR_NOTFOUND;
344 (*upto)++;
345 return node;
Simon Glassb5220bc2011-10-24 19:15:32 +0000346}
347
Simon Glassa53f4a22012-01-17 08:20:50 +0000348int fdtdec_find_aliases_for_id(const void *blob, const char *name,
Mario Six2e386622018-01-15 11:07:35 +0100349 enum fdt_compat_id id, int *node_list,
350 int maxcount)
Simon Glassa53f4a22012-01-17 08:20:50 +0000351{
Simon Glassc6782272012-02-03 15:13:53 +0000352 memset(node_list, '\0', sizeof(*node_list) * maxcount);
353
354 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
355}
356
357/* TODO: Can we tighten this code up a little? */
358int fdtdec_add_aliases_for_id(const void *blob, const char *name,
Mario Six2e386622018-01-15 11:07:35 +0100359 enum fdt_compat_id id, int *node_list,
360 int maxcount)
Simon Glassc6782272012-02-03 15:13:53 +0000361{
Simon Glassa53f4a22012-01-17 08:20:50 +0000362 int name_len = strlen(name);
363 int nodes[maxcount];
364 int num_found = 0;
365 int offset, node;
366 int alias_node;
367 int count;
368 int i, j;
369
370 /* find the alias node if present */
371 alias_node = fdt_path_offset(blob, "/aliases");
372
373 /*
374 * start with nothing, and we can assume that the root node can't
375 * match
376 */
377 memset(nodes, '\0', sizeof(nodes));
378
379 /* First find all the compatible nodes */
380 for (node = count = 0; node >= 0 && count < maxcount;) {
381 node = fdtdec_next_compatible(blob, node, id);
382 if (node >= 0)
383 nodes[count++] = node;
384 }
385 if (node >= 0)
386 debug("%s: warning: maxcount exceeded with alias '%s'\n",
Mario Six2e386622018-01-15 11:07:35 +0100387 __func__, name);
Simon Glassa53f4a22012-01-17 08:20:50 +0000388
389 /* Now find all the aliases */
Simon Glassa53f4a22012-01-17 08:20:50 +0000390 for (offset = fdt_first_property_offset(blob, alias_node);
391 offset > 0;
392 offset = fdt_next_property_offset(blob, offset)) {
393 const struct fdt_property *prop;
394 const char *path;
395 int number;
396 int found;
397
398 node = 0;
399 prop = fdt_get_property_by_offset(blob, offset, NULL);
400 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
401 if (prop->len && 0 == strncmp(path, name, name_len))
402 node = fdt_path_offset(blob, prop->data);
403 if (node <= 0)
404 continue;
405
406 /* Get the alias number */
407 number = simple_strtoul(path + name_len, NULL, 10);
408 if (number < 0 || number >= maxcount) {
409 debug("%s: warning: alias '%s' is out of range\n",
Mario Six2e386622018-01-15 11:07:35 +0100410 __func__, path);
Simon Glassa53f4a22012-01-17 08:20:50 +0000411 continue;
412 }
413
414 /* Make sure the node we found is actually in our list! */
415 found = -1;
416 for (j = 0; j < count; j++)
417 if (nodes[j] == node) {
418 found = j;
419 break;
420 }
421
422 if (found == -1) {
423 debug("%s: warning: alias '%s' points to a node "
424 "'%s' that is missing or is not compatible "
425 " with '%s'\n", __func__, path,
426 fdt_get_name(blob, node, NULL),
427 compat_names[id]);
428 continue;
429 }
430
431 /*
432 * Add this node to our list in the right place, and mark
433 * it as done.
434 */
435 if (fdtdec_get_is_enabled(blob, node)) {
Simon Glassc6782272012-02-03 15:13:53 +0000436 if (node_list[number]) {
437 debug("%s: warning: alias '%s' requires that "
438 "a node be placed in the list in a "
439 "position which is already filled by "
440 "node '%s'\n", __func__, path,
441 fdt_get_name(blob, node, NULL));
442 continue;
443 }
Simon Glassa53f4a22012-01-17 08:20:50 +0000444 node_list[number] = node;
445 if (number >= num_found)
446 num_found = number + 1;
447 }
Simon Glassc6782272012-02-03 15:13:53 +0000448 nodes[found] = 0;
Simon Glassa53f4a22012-01-17 08:20:50 +0000449 }
450
451 /* Add any nodes not mentioned by an alias */
452 for (i = j = 0; i < maxcount; i++) {
453 if (!node_list[i]) {
454 for (; j < maxcount; j++)
455 if (nodes[j] &&
Mario Six2e386622018-01-15 11:07:35 +0100456 fdtdec_get_is_enabled(blob, nodes[j]))
Simon Glassa53f4a22012-01-17 08:20:50 +0000457 break;
458
459 /* Have we run out of nodes to add? */
460 if (j == maxcount)
461 break;
462
463 assert(!node_list[i]);
464 node_list[i] = nodes[j++];
465 if (i >= num_found)
466 num_found = i + 1;
467 }
468 }
469
470 return num_found;
471}
472
Simon Glass5c33c9f2014-07-23 06:55:09 -0600473int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
474 int *seqp)
475{
476 int base_len = strlen(base);
477 const char *find_name;
478 int find_namelen;
479 int prop_offset;
480 int aliases;
481
482 find_name = fdt_get_name(blob, offset, &find_namelen);
483 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
484
485 aliases = fdt_path_offset(blob, "/aliases");
486 for (prop_offset = fdt_first_property_offset(blob, aliases);
487 prop_offset > 0;
488 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
489 const char *prop;
490 const char *name;
491 const char *slash;
Simon Glassc4af6732015-06-23 15:39:08 -0600492 int len, val;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600493
494 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
495 debug(" - %s, %s\n", name, prop);
496 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
497 strncmp(name, base, base_len))
498 continue;
499
500 slash = strrchr(prop, '/');
501 if (strcmp(slash + 1, find_name))
502 continue;
Aswath Govindrajuc5891322020-12-03 10:55:45 +0530503
504 /*
505 * Adding an extra check to distinguish DT nodes with
506 * same name
507 */
508 if (IS_ENABLED(CONFIG_PHANDLE_CHECK_SEQ)) {
509 if (fdt_get_phandle(blob, offset) !=
510 fdt_get_phandle(blob, fdt_path_offset(blob, prop)))
511 continue;
512 }
513
Simon Glassc4af6732015-06-23 15:39:08 -0600514 val = trailing_strtol(name);
515 if (val != -1) {
516 *seqp = val;
517 debug("Found seq %d\n", *seqp);
518 return 0;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600519 }
520 }
521
522 debug("Not found\n");
523 return -ENOENT;
524}
525
Michal Simek003c9dc2019-01-31 16:30:58 +0100526int fdtdec_get_alias_highest_id(const void *blob, const char *base)
527{
528 int base_len = strlen(base);
529 int prop_offset;
530 int aliases;
531 int max = -1;
532
533 debug("Looking for highest alias id for '%s'\n", base);
534
535 aliases = fdt_path_offset(blob, "/aliases");
536 for (prop_offset = fdt_first_property_offset(blob, aliases);
537 prop_offset > 0;
538 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
539 const char *prop;
540 const char *name;
541 int len, val;
542
543 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
544 debug(" - %s, %s\n", name, prop);
545 if (*prop != '/' || prop[len - 1] ||
546 strncmp(name, base, base_len))
547 continue;
548
549 val = trailing_strtol(name);
550 if (val > max) {
551 debug("Found seq %d\n", val);
552 max = val;
553 }
554 }
555
556 return max;
557}
558
Simon Glass3bc37a52015-10-17 19:41:14 -0600559const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
560{
561 int chosen_node;
562
563 if (!blob)
564 return NULL;
565 chosen_node = fdt_path_offset(blob, "/chosen");
566 return fdt_getprop(blob, chosen_node, name, NULL);
567}
568
Simon Glassaac07d42014-09-04 16:27:24 -0600569int fdtdec_get_chosen_node(const void *blob, const char *name)
570{
571 const char *prop;
Simon Glassaac07d42014-09-04 16:27:24 -0600572
Simon Glass3bc37a52015-10-17 19:41:14 -0600573 prop = fdtdec_get_chosen_prop(blob, name);
Simon Glassaac07d42014-09-04 16:27:24 -0600574 if (!prop)
575 return -FDT_ERR_NOTFOUND;
576 return fdt_path_offset(blob, prop);
577}
578
Simon Glass9a263e52012-03-28 10:08:24 +0000579int fdtdec_check_fdt(void)
580{
581 /*
582 * We must have an FDT, but we cannot panic() yet since the console
583 * is not ready. So for now, just assert(). Boards which need an early
584 * FDT (prior to console ready) will need to make their own
585 * arrangements and do their own checks.
586 */
587 assert(!fdtdec_prepare_fdt());
588 return 0;
589}
590
Simon Glassb5220bc2011-10-24 19:15:32 +0000591/*
592 * This function is a little odd in that it accesses global data. At some
593 * point if the architecture board.c files merge this will make more sense.
594 * Even now, it is common code.
595 */
Simon Glass9a263e52012-03-28 10:08:24 +0000596int fdtdec_prepare_fdt(void)
Simon Glassb5220bc2011-10-24 19:15:32 +0000597{
Simon Glassc309c2d2013-04-20 08:42:46 +0000598 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
599 fdt_check_header(gd->fdt_blob)) {
Simon Glass66312372015-02-27 22:06:32 -0700600#ifdef CONFIG_SPL_BUILD
601 puts("Missing DTB\n");
602#else
603 puts("No valid device tree binary found - please append one to U-Boot binary, use u-boot-dtb.bin or define CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n");
Simon Glasscb5f97f702015-06-23 15:39:09 -0600604# ifdef DEBUG
605 if (gd->fdt_blob) {
606 printf("fdt_blob=%p\n", gd->fdt_blob);
607 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
608 32, 0);
609 }
610# endif
Simon Glass66312372015-02-27 22:06:32 -0700611#endif
Simon Glass9a263e52012-03-28 10:08:24 +0000612 return -1;
613 }
Simon Glassb5220bc2011-10-24 19:15:32 +0000614 return 0;
615}
Simon Glassd17da652012-02-27 10:52:35 +0000616
617int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
618{
619 const u32 *phandle;
620 int lookup;
621
Simon Glass1cb23232012-07-12 05:25:01 +0000622 debug("%s: %s\n", __func__, prop_name);
Simon Glassd17da652012-02-27 10:52:35 +0000623 phandle = fdt_getprop(blob, node, prop_name, NULL);
624 if (!phandle)
625 return -FDT_ERR_NOTFOUND;
626
627 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
628 return lookup;
629}
630
631/**
632 * Look up a property in a node and check that it has a minimum length.
633 *
634 * @param blob FDT blob
635 * @param node node to examine
636 * @param prop_name name of property to find
637 * @param min_len minimum property length in bytes
638 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
639 found, or -FDT_ERR_BADLAYOUT if not enough data
640 * @return pointer to cell, which is only valid if err == 0
641 */
642static const void *get_prop_check_min_len(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100643 const char *prop_name, int min_len,
644 int *err)
Simon Glassd17da652012-02-27 10:52:35 +0000645{
646 const void *cell;
647 int len;
648
649 debug("%s: %s\n", __func__, prop_name);
650 cell = fdt_getprop(blob, node, prop_name, &len);
651 if (!cell)
652 *err = -FDT_ERR_NOTFOUND;
653 else if (len < min_len)
654 *err = -FDT_ERR_BADLAYOUT;
655 else
656 *err = 0;
657 return cell;
658}
659
660int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100661 u32 *array, int count)
Simon Glassd17da652012-02-27 10:52:35 +0000662{
663 const u32 *cell;
Mario Sixb79221a2018-01-15 11:07:36 +0100664 int err = 0;
Simon Glassd17da652012-02-27 10:52:35 +0000665
666 debug("%s: %s\n", __func__, prop_name);
667 cell = get_prop_check_min_len(blob, node, prop_name,
668 sizeof(u32) * count, &err);
669 if (!err) {
Mario Sixb79221a2018-01-15 11:07:36 +0100670 int i;
671
Simon Glassd17da652012-02-27 10:52:35 +0000672 for (i = 0; i < count; i++)
673 array[i] = fdt32_to_cpu(cell[i]);
674 }
675 return err;
676}
677
Simon Glassa9f04d42014-11-10 18:00:19 -0700678int fdtdec_get_int_array_count(const void *blob, int node,
679 const char *prop_name, u32 *array, int count)
680{
681 const u32 *cell;
682 int len, elems;
683 int i;
684
685 debug("%s: %s\n", __func__, prop_name);
686 cell = fdt_getprop(blob, node, prop_name, &len);
687 if (!cell)
688 return -FDT_ERR_NOTFOUND;
689 elems = len / sizeof(u32);
690 if (count > elems)
691 count = elems;
692 for (i = 0; i < count; i++)
693 array[i] = fdt32_to_cpu(cell[i]);
694
695 return count;
696}
697
Simon Glass96875e72012-04-02 13:18:41 +0000698const u32 *fdtdec_locate_array(const void *blob, int node,
699 const char *prop_name, int count)
700{
701 const u32 *cell;
702 int err;
703
704 cell = get_prop_check_min_len(blob, node, prop_name,
705 sizeof(u32) * count, &err);
706 return err ? NULL : cell;
707}
708
Simon Glassd17da652012-02-27 10:52:35 +0000709int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
710{
711 const s32 *cell;
712 int len;
713
714 debug("%s: %s\n", __func__, prop_name);
715 cell = fdt_getprop(blob, node, prop_name, &len);
716 return cell != NULL;
717}
Simon Glassed3ee5c2012-02-27 10:52:36 +0000718
Simon Glass57068a72015-01-05 20:05:26 -0700719int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
720 const char *list_name,
721 const char *cells_name,
722 int cell_count, int index,
723 struct fdtdec_phandle_args *out_args)
724{
725 const __be32 *list, *list_end;
726 int rc = 0, size, cur_index = 0;
727 uint32_t count = 0;
728 int node = -1;
729 int phandle;
730
731 /* Retrieve the phandle list property */
732 list = fdt_getprop(blob, src_node, list_name, &size);
733 if (!list)
734 return -ENOENT;
735 list_end = list + size / sizeof(*list);
736
737 /* Loop over the phandles until all the requested entry is found */
738 while (list < list_end) {
739 rc = -EINVAL;
740 count = 0;
741
742 /*
743 * If phandle is 0, then it is an empty entry with no
744 * arguments. Skip forward to the next entry.
745 */
746 phandle = be32_to_cpup(list++);
747 if (phandle) {
748 /*
749 * Find the provider node and parse the #*-cells
750 * property to determine the argument length.
751 *
752 * This is not needed if the cell count is hard-coded
753 * (i.e. cells_name not set, but cell_count is set),
754 * except when we're going to return the found node
755 * below.
756 */
757 if (cells_name || cur_index == index) {
758 node = fdt_node_offset_by_phandle(blob,
759 phandle);
Patrick Delaunaycba487c2020-09-25 09:41:15 +0200760 if (node < 0) {
Simon Glass57068a72015-01-05 20:05:26 -0700761 debug("%s: could not find phandle\n",
762 fdt_get_name(blob, src_node,
763 NULL));
764 goto err;
765 }
766 }
767
768 if (cells_name) {
769 count = fdtdec_get_int(blob, node, cells_name,
770 -1);
771 if (count == -1) {
772 debug("%s: could not get %s for %s\n",
773 fdt_get_name(blob, src_node,
774 NULL),
775 cells_name,
776 fdt_get_name(blob, node,
777 NULL));
778 goto err;
779 }
780 } else {
781 count = cell_count;
782 }
783
784 /*
785 * Make sure that the arguments actually fit in the
786 * remaining property data length
787 */
788 if (list + count > list_end) {
789 debug("%s: arguments longer than property\n",
790 fdt_get_name(blob, src_node, NULL));
791 goto err;
792 }
793 }
794
795 /*
796 * All of the error cases above bail out of the loop, so at
797 * this point, the parsing is successful. If the requested
798 * index matches, then fill the out_args structure and return,
799 * or return -ENOENT for an empty entry.
800 */
801 rc = -ENOENT;
802 if (cur_index == index) {
803 if (!phandle)
804 goto err;
805
806 if (out_args) {
807 int i;
808
809 if (count > MAX_PHANDLE_ARGS) {
810 debug("%s: too many arguments %d\n",
811 fdt_get_name(blob, src_node,
812 NULL), count);
813 count = MAX_PHANDLE_ARGS;
814 }
815 out_args->node = node;
816 out_args->args_count = count;
817 for (i = 0; i < count; i++) {
818 out_args->args[i] =
819 be32_to_cpup(list++);
820 }
821 }
822
823 /* Found it! return success */
824 return 0;
825 }
826
827 node = -1;
828 list += count;
829 cur_index++;
830 }
831
832 /*
833 * Result will be one of:
834 * -ENOENT : index is for empty phandle
835 * -EINVAL : parsing error on data
836 * [1..n] : Number of phandle (count mode; when index = -1)
837 */
838 rc = index < 0 ? cur_index : -ENOENT;
839 err:
840 return rc;
841}
842
Anton Staffbed4d892012-04-17 09:01:28 +0000843int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100844 u8 *array, int count)
Anton Staffbed4d892012-04-17 09:01:28 +0000845{
846 const u8 *cell;
847 int err;
848
849 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
850 if (!err)
851 memcpy(array, cell, count);
852 return err;
853}
854
855const u8 *fdtdec_locate_byte_array(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100856 const char *prop_name, int count)
Anton Staffbed4d892012-04-17 09:01:28 +0000857{
858 const u8 *cell;
859 int err;
860
861 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
862 if (err)
863 return NULL;
864 return cell;
865}
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000866
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000867int fdtdec_get_config_int(const void *blob, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100868 int default_val)
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000869{
870 int config_node;
871
872 debug("%s: %s\n", __func__, prop_name);
873 config_node = fdt_path_offset(blob, "/config");
874 if (config_node < 0)
875 return default_val;
876 return fdtdec_get_int(blob, config_node, prop_name, default_val);
877}
Simon Glass332ab0d2012-10-25 16:30:59 +0000878
Gabe Black79289c02012-10-25 16:31:04 +0000879int fdtdec_get_config_bool(const void *blob, const char *prop_name)
880{
881 int config_node;
882 const void *prop;
883
884 debug("%s: %s\n", __func__, prop_name);
885 config_node = fdt_path_offset(blob, "/config");
886 if (config_node < 0)
887 return 0;
888 prop = fdt_get_property(blob, config_node, prop_name, NULL);
889
890 return prop != NULL;
891}
892
Simon Glass332ab0d2012-10-25 16:30:59 +0000893char *fdtdec_get_config_string(const void *blob, const char *prop_name)
894{
895 const char *nodep;
896 int nodeoffset;
897 int len;
898
899 debug("%s: %s\n", __func__, prop_name);
900 nodeoffset = fdt_path_offset(blob, "/config");
901 if (nodeoffset < 0)
902 return NULL;
903
904 nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
905 if (!nodep)
906 return NULL;
907
908 return (char *)nodep;
909}
Simon Glassf20c4612012-10-25 16:31:00 +0000910
Simon Glass5f7bfdd2015-03-05 12:25:14 -0700911u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
Thierry Reding56f42242014-08-26 17:33:53 +0200912{
913 u64 number = 0;
914
915 while (cells--)
916 number = (number << 32) | fdt32_to_cpu(*ptr++);
917
918 return number;
919}
920
921int fdt_get_resource(const void *fdt, int node, const char *property,
922 unsigned int index, struct fdt_resource *res)
923{
924 const fdt32_t *ptr, *end;
925 int na, ns, len, parent;
926 unsigned int i = 0;
927
928 parent = fdt_parent_offset(fdt, node);
929 if (parent < 0)
930 return parent;
931
932 na = fdt_address_cells(fdt, parent);
933 ns = fdt_size_cells(fdt, parent);
934
935 ptr = fdt_getprop(fdt, node, property, &len);
936 if (!ptr)
937 return len;
938
939 end = ptr + len / sizeof(*ptr);
940
941 while (ptr + na + ns <= end) {
942 if (i == index) {
Mario Sixb79221a2018-01-15 11:07:36 +0100943 res->start = fdtdec_get_number(ptr, na);
944 res->end = res->start;
Thierry Reding56f42242014-08-26 17:33:53 +0200945 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
946 return 0;
947 }
948
949 ptr += na + ns;
950 i++;
951 }
952
953 return -FDT_ERR_NOTFOUND;
954}
955
956int fdt_get_named_resource(const void *fdt, int node, const char *property,
957 const char *prop_names, const char *name,
958 struct fdt_resource *res)
959{
960 int index;
961
Simon Glassb02e4042016-10-02 17:59:28 -0600962 index = fdt_stringlist_search(fdt, node, prop_names, name);
Thierry Reding56f42242014-08-26 17:33:53 +0200963 if (index < 0)
964 return index;
965
966 return fdt_get_resource(fdt, node, property, index, res);
967}
Thierry Reding9f85eee2014-08-26 17:33:54 +0200968
Simon Glass12e67112015-04-14 21:03:21 -0600969static int decode_timing_property(const void *blob, int node, const char *name,
970 struct timing_entry *result)
971{
972 int length, ret = 0;
973 const u32 *prop;
974
975 prop = fdt_getprop(blob, node, name, &length);
976 if (!prop) {
977 debug("%s: could not find property %s\n",
978 fdt_get_name(blob, node, NULL), name);
979 return length;
980 }
981
982 if (length == sizeof(u32)) {
983 result->typ = fdtdec_get_int(blob, node, name, 0);
984 result->min = result->typ;
985 result->max = result->typ;
986 } else {
987 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
988 }
989
990 return ret;
991}
992
993int fdtdec_decode_display_timing(const void *blob, int parent, int index,
994 struct display_timing *dt)
995{
996 int i, node, timings_node;
997 u32 val = 0;
998 int ret = 0;
999
1000 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
1001 if (timings_node < 0)
1002 return timings_node;
1003
1004 for (i = 0, node = fdt_first_subnode(blob, timings_node);
1005 node > 0 && i != index;
1006 node = fdt_next_subnode(blob, node))
1007 i++;
1008
1009 if (node < 0)
1010 return node;
1011
1012 memset(dt, 0, sizeof(*dt));
1013
1014 ret |= decode_timing_property(blob, node, "hback-porch",
1015 &dt->hback_porch);
1016 ret |= decode_timing_property(blob, node, "hfront-porch",
1017 &dt->hfront_porch);
1018 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
1019 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
1020 ret |= decode_timing_property(blob, node, "vback-porch",
1021 &dt->vback_porch);
1022 ret |= decode_timing_property(blob, node, "vfront-porch",
1023 &dt->vfront_porch);
1024 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
1025 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
1026 ret |= decode_timing_property(blob, node, "clock-frequency",
1027 &dt->pixelclock);
1028
1029 dt->flags = 0;
1030 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1031 if (val != -1) {
1032 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1033 DISPLAY_FLAGS_VSYNC_LOW;
1034 }
1035 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1036 if (val != -1) {
1037 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1038 DISPLAY_FLAGS_HSYNC_LOW;
1039 }
1040 val = fdtdec_get_int(blob, node, "de-active", -1);
1041 if (val != -1) {
1042 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1043 DISPLAY_FLAGS_DE_LOW;
1044 }
1045 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1046 if (val != -1) {
1047 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1048 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1049 }
1050
1051 if (fdtdec_get_bool(blob, node, "interlaced"))
1052 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1053 if (fdtdec_get_bool(blob, node, "doublescan"))
1054 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1055 if (fdtdec_get_bool(blob, node, "doubleclk"))
1056 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1057
Simon Glass04b9dd12016-05-05 07:28:21 -06001058 return ret;
Simon Glass12e67112015-04-14 21:03:21 -06001059}
1060
Michal Simek50c7b722020-07-10 13:16:50 +02001061int fdtdec_setup_mem_size_base(void)
Nathan Rossi623f6012016-12-19 00:03:34 +10001062{
Michal Simekc2f09502020-07-10 13:34:44 +02001063 int ret;
1064 ofnode mem;
1065 struct resource res;
Nathan Rossi623f6012016-12-19 00:03:34 +10001066
Michal Simekc2f09502020-07-10 13:34:44 +02001067 mem = ofnode_path("/memory");
1068 if (!ofnode_valid(mem)) {
Nathan Rossi623f6012016-12-19 00:03:34 +10001069 debug("%s: Missing /memory node\n", __func__);
1070 return -EINVAL;
1071 }
1072
Michal Simekc2f09502020-07-10 13:34:44 +02001073 ret = ofnode_read_resource(mem, 0, &res);
Nathan Rossi623f6012016-12-19 00:03:34 +10001074 if (ret != 0) {
1075 debug("%s: Unable to decode first memory bank\n", __func__);
1076 return -EINVAL;
1077 }
1078
1079 gd->ram_size = (phys_size_t)(res.end - res.start + 1);
Siva Durga Prasad Paladugu1473b122018-07-16 15:56:10 +05301080 gd->ram_base = (unsigned long)res.start;
Simon Glassc69380f2017-05-27 07:38:13 -06001081 debug("%s: Initial DRAM size %llx\n", __func__,
1082 (unsigned long long)gd->ram_size);
Nathan Rossi623f6012016-12-19 00:03:34 +10001083
1084 return 0;
1085}
1086
Michal Simekc2f09502020-07-10 13:34:44 +02001087ofnode get_next_memory_node(ofnode mem)
Jens Wiklander452bc122018-07-13 12:12:11 +02001088{
Jens Wiklander452bc122018-07-13 12:12:11 +02001089 do {
Michal Simekc2f09502020-07-10 13:34:44 +02001090 mem = ofnode_by_prop_value(mem, "device_type", "memory", 7);
1091 } while (!ofnode_is_available(mem));
Jens Wiklander452bc122018-07-13 12:12:11 +02001092
1093 return mem;
1094}
1095
Michal Simek62897c42020-07-10 13:16:49 +02001096int fdtdec_setup_memory_banksize(void)
Nathan Rossi623f6012016-12-19 00:03:34 +10001097{
Michal Simekc2f09502020-07-10 13:34:44 +02001098 int bank, ret, reg = 0;
1099 struct resource res;
1100 ofnode mem = ofnode_null();
Nathan Rossi623f6012016-12-19 00:03:34 +10001101
Michal Simekc2f09502020-07-10 13:34:44 +02001102 mem = get_next_memory_node(mem);
1103 if (!ofnode_valid(mem)) {
Michal Simek658954c2018-10-03 15:53:52 +02001104 debug("%s: Missing /memory node\n", __func__);
1105 return -EINVAL;
1106 }
Nathan Rossi623f6012016-12-19 00:03:34 +10001107
1108 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
Michal Simekc2f09502020-07-10 13:34:44 +02001109 ret = ofnode_read_resource(mem, reg++, &res);
1110 if (ret < 0) {
Marek Vasut942ee092017-11-27 05:32:42 +01001111 reg = 0;
Michal Simekc2f09502020-07-10 13:34:44 +02001112 mem = get_next_memory_node(mem);
Marek Vasut81d0cef2020-09-12 12:42:52 +02001113 if (!ofnode_valid(mem))
Michal Simek658954c2018-10-03 15:53:52 +02001114 break;
1115
Michal Simekc2f09502020-07-10 13:34:44 +02001116 ret = ofnode_read_resource(mem, reg++, &res);
1117 if (ret < 0)
Michal Simek658954c2018-10-03 15:53:52 +02001118 break;
1119 }
Michal Simekc2f09502020-07-10 13:34:44 +02001120
1121 if (ret != 0)
Michal Simek658954c2018-10-03 15:53:52 +02001122 return -EINVAL;
Nathan Rossi623f6012016-12-19 00:03:34 +10001123
1124 gd->bd->bi_dram[bank].start = (phys_addr_t)res.start;
1125 gd->bd->bi_dram[bank].size =
1126 (phys_size_t)(res.end - res.start + 1);
1127
1128 debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
1129 __func__, bank,
1130 (unsigned long long)gd->bd->bi_dram[bank].start,
1131 (unsigned long long)gd->bd->bi_dram[bank].size);
1132 }
1133
1134 return 0;
1135}
Michal Simek7fce7392020-07-09 14:09:52 +02001136
1137int fdtdec_setup_mem_size_base_lowest(void)
1138{
Michal Simekc2f09502020-07-10 13:34:44 +02001139 int bank, ret, reg = 0;
1140 struct resource res;
Michal Simek7fce7392020-07-09 14:09:52 +02001141 unsigned long base;
1142 phys_size_t size;
Michal Simekc2f09502020-07-10 13:34:44 +02001143 ofnode mem = ofnode_null();
Michal Simek7fce7392020-07-09 14:09:52 +02001144
1145 gd->ram_base = (unsigned long)~0;
1146
Michal Simekc2f09502020-07-10 13:34:44 +02001147 mem = get_next_memory_node(mem);
1148 if (!ofnode_valid(mem)) {
Michal Simek7fce7392020-07-09 14:09:52 +02001149 debug("%s: Missing /memory node\n", __func__);
1150 return -EINVAL;
1151 }
1152
1153 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
Michal Simekc2f09502020-07-10 13:34:44 +02001154 ret = ofnode_read_resource(mem, reg++, &res);
1155 if (ret < 0) {
Michal Simek7fce7392020-07-09 14:09:52 +02001156 reg = 0;
Michal Simekc2f09502020-07-10 13:34:44 +02001157 mem = get_next_memory_node(mem);
Marek Vasut81d0cef2020-09-12 12:42:52 +02001158 if (!ofnode_valid(mem))
Michal Simek7fce7392020-07-09 14:09:52 +02001159 break;
1160
Michal Simekc2f09502020-07-10 13:34:44 +02001161 ret = ofnode_read_resource(mem, reg++, &res);
1162 if (ret < 0)
Michal Simek7fce7392020-07-09 14:09:52 +02001163 break;
1164 }
Michal Simekc2f09502020-07-10 13:34:44 +02001165
Michal Simek7fce7392020-07-09 14:09:52 +02001166 if (ret != 0)
1167 return -EINVAL;
1168
1169 base = (unsigned long)res.start;
1170 size = (phys_size_t)(res.end - res.start + 1);
1171
1172 if (gd->ram_base > base && size) {
1173 gd->ram_base = base;
1174 gd->ram_size = size;
1175 debug("%s: Initial DRAM base %lx size %lx\n",
1176 __func__, base, (unsigned long)size);
1177 }
1178 }
1179
1180 return 0;
1181}
Nathan Rossi623f6012016-12-19 00:03:34 +10001182
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001183#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1184# if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\
1185 CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO)
1186static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1187{
Marek Vasut95f4bbd2019-03-08 16:06:55 +01001188 size_t sz_out = CONFIG_VAL(MULTI_DTB_FIT_UNCOMPRESS_SZ);
Marek Vasut1fd30352019-03-13 21:11:22 +01001189 bool gzip = 0, lzo = 0;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001190 ulong sz_in = sz_src;
1191 void *dst;
1192 int rc;
1193
1194 if (CONFIG_IS_ENABLED(GZIP))
Marek Vasut1fd30352019-03-13 21:11:22 +01001195 if (gzip_parse_header(src, sz_in) >= 0)
1196 gzip = 1;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001197 if (CONFIG_IS_ENABLED(LZO))
Marek Vasut1fd30352019-03-13 21:11:22 +01001198 if (!gzip && lzop_is_valid_header(src))
1199 lzo = 1;
1200
1201 if (!gzip && !lzo)
1202 return -EBADMSG;
1203
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001204
1205 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) {
1206 dst = malloc(sz_out);
1207 if (!dst) {
1208 puts("uncompress_blob: Unable to allocate memory\n");
1209 return -ENOMEM;
1210 }
1211 } else {
1212# if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA)
1213 dst = (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR);
1214# else
1215 return -ENOTSUPP;
1216# endif
1217 }
1218
Marek Vasut1fd30352019-03-13 21:11:22 +01001219 if (CONFIG_IS_ENABLED(GZIP) && gzip)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001220 rc = gunzip(dst, sz_out, (u8 *)src, &sz_in);
Marek Vasut1fd30352019-03-13 21:11:22 +01001221 else if (CONFIG_IS_ENABLED(LZO) && lzo)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001222 rc = lzop_decompress(src, sz_in, dst, &sz_out);
Marek Vasut1fd30352019-03-13 21:11:22 +01001223 else
1224 hang();
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001225
1226 if (rc < 0) {
1227 /* not a valid compressed blob */
1228 puts("uncompress_blob: Unable to uncompress\n");
1229 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC))
1230 free(dst);
1231 return -EBADMSG;
1232 }
1233 *dstp = dst;
1234 return 0;
1235}
1236# else
1237static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1238{
Marek Vasut410d9b62018-10-18 20:37:05 +02001239 *dstp = (void *)src;
1240 return 0;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001241}
1242# endif
1243#endif
1244
Rob Clark3b595da2018-01-10 11:34:37 +01001245#if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
1246/*
1247 * For CONFIG_OF_SEPARATE, the board may optionally implement this to
1248 * provide and/or fixup the fdt.
1249 */
1250__weak void *board_fdt_blob_setup(void)
1251{
1252 void *fdt_blob = NULL;
1253#ifdef CONFIG_SPL_BUILD
1254 /* FDT is at end of BSS unless it is in a different memory region */
1255 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
1256 fdt_blob = (ulong *)&_image_binary_end;
1257 else
1258 fdt_blob = (ulong *)&__bss_end;
1259#else
1260 /* FDT is at end of image */
1261 fdt_blob = (ulong *)&_end;
1262#endif
1263 return fdt_blob;
1264}
1265#endif
1266
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,
Etienne Carriereccaa5742020-09-10 10:49:59 +02001330 uint32_t *phandlep, bool no_map)
Thierry Redingc9222a02019-03-21 19:10:02 +01001331{
1332 fdt32_t cells[4] = {}, *ptr = cells;
1333 uint32_t upper, lower, phandle;
1334 int parent, node, na, ns, err;
Thierry Reding3bf2f152019-04-15 10:08:21 +02001335 fdt_size_t size;
Thierry Redingc9222a02019-03-21 19:10:02 +01001336 char name[64];
1337
1338 /* create an empty /reserved-memory node if one doesn't exist */
1339 parent = fdt_path_offset(blob, "/reserved-memory");
1340 if (parent < 0) {
1341 parent = fdtdec_init_reserved_memory(blob);
1342 if (parent < 0)
1343 return parent;
1344 }
1345
1346 /* only 1 or 2 #address-cells and #size-cells are supported */
1347 na = fdt_address_cells(blob, parent);
1348 if (na < 1 || na > 2)
1349 return -FDT_ERR_BADNCELLS;
1350
1351 ns = fdt_size_cells(blob, parent);
1352 if (ns < 1 || ns > 2)
1353 return -FDT_ERR_BADNCELLS;
1354
1355 /* find a matching node and return the phandle to that */
1356 fdt_for_each_subnode(node, blob, parent) {
1357 const char *name = fdt_get_name(blob, node, NULL);
Bin Menga9ad1132020-05-19 23:38:32 -07001358 fdt_addr_t addr;
1359 fdt_size_t size;
Thierry Redingc9222a02019-03-21 19:10:02 +01001360
Bin Mengf6704c72020-05-19 23:38:33 -07001361 addr = fdtdec_get_addr_size_fixed(blob, node, "reg", 0, na, ns,
1362 &size, false);
Thierry Redingc9222a02019-03-21 19:10:02 +01001363 if (addr == FDT_ADDR_T_NONE) {
1364 debug("failed to read address/size for %s\n", name);
1365 continue;
1366 }
1367
Atish Patraf6147532020-04-21 11:15:00 -07001368 if (addr == carveout->start && (addr + size - 1) ==
1369 carveout->end) {
Heiko Stuebner086336a2019-10-23 16:46:38 +02001370 if (phandlep)
1371 *phandlep = fdt_get_phandle(blob, node);
Thierry Redingc9222a02019-03-21 19:10:02 +01001372 return 0;
1373 }
1374 }
1375
1376 /*
1377 * Unpack the start address and generate the name of the new node
1378 * base on the basename and the unit-address.
1379 */
Thierry Reding3bf2f152019-04-15 10:08:21 +02001380 upper = upper_32_bits(carveout->start);
1381 lower = lower_32_bits(carveout->start);
Thierry Redingc9222a02019-03-21 19:10:02 +01001382
1383 if (na > 1 && upper > 0)
1384 snprintf(name, sizeof(name), "%s@%x,%x", basename, upper,
1385 lower);
1386 else {
1387 if (upper > 0) {
1388 debug("address %08x:%08x exceeds addressable space\n",
1389 upper, lower);
1390 return -FDT_ERR_BADVALUE;
1391 }
1392
1393 snprintf(name, sizeof(name), "%s@%x", basename, lower);
1394 }
1395
1396 node = fdt_add_subnode(blob, parent, name);
1397 if (node < 0)
1398 return node;
1399
Heiko Stuebner357d2ce2019-10-23 16:46:39 +02001400 if (phandlep) {
1401 err = fdt_generate_phandle(blob, &phandle);
1402 if (err < 0)
1403 return err;
Thierry Redingc9222a02019-03-21 19:10:02 +01001404
Heiko Stuebner357d2ce2019-10-23 16:46:39 +02001405 err = fdtdec_set_phandle(blob, node, phandle);
1406 if (err < 0)
1407 return err;
1408 }
Thierry Redingc9222a02019-03-21 19:10:02 +01001409
1410 /* store one or two address cells */
1411 if (na > 1)
1412 *ptr++ = cpu_to_fdt32(upper);
1413
1414 *ptr++ = cpu_to_fdt32(lower);
1415
1416 /* store one or two size cells */
Thierry Reding3bf2f152019-04-15 10:08:21 +02001417 size = carveout->end - carveout->start + 1;
1418 upper = upper_32_bits(size);
1419 lower = lower_32_bits(size);
Thierry Redingc9222a02019-03-21 19:10:02 +01001420
1421 if (ns > 1)
1422 *ptr++ = cpu_to_fdt32(upper);
1423
1424 *ptr++ = cpu_to_fdt32(lower);
1425
1426 err = fdt_setprop(blob, node, "reg", cells, (na + ns) * sizeof(*cells));
1427 if (err < 0)
1428 return err;
1429
Etienne Carriereccaa5742020-09-10 10:49:59 +02001430 if (no_map) {
1431 err = fdt_setprop(blob, node, "no-map", NULL, 0);
1432 if (err < 0)
1433 return err;
1434 }
1435
Thierry Redingc9222a02019-03-21 19:10:02 +01001436 /* return the phandle for the new node for the caller to use */
1437 if (phandlep)
1438 *phandlep = phandle;
1439
1440 return 0;
1441}
1442
Thierry Reding16523ac2019-03-21 19:10:03 +01001443int fdtdec_get_carveout(const void *blob, const char *node, const char *name,
1444 unsigned int index, struct fdt_memory *carveout)
1445{
1446 const fdt32_t *prop;
1447 uint32_t phandle;
1448 int offset, len;
1449 fdt_size_t size;
1450
1451 offset = fdt_path_offset(blob, node);
1452 if (offset < 0)
1453 return offset;
1454
1455 prop = fdt_getprop(blob, offset, name, &len);
1456 if (!prop) {
1457 debug("failed to get %s for %s\n", name, node);
1458 return -FDT_ERR_NOTFOUND;
1459 }
1460
1461 if ((len % sizeof(phandle)) != 0) {
1462 debug("invalid phandle property\n");
1463 return -FDT_ERR_BADPHANDLE;
1464 }
1465
1466 if (len < (sizeof(phandle) * (index + 1))) {
1467 debug("invalid phandle index\n");
1468 return -FDT_ERR_BADPHANDLE;
1469 }
1470
1471 phandle = fdt32_to_cpu(prop[index]);
1472
1473 offset = fdt_node_offset_by_phandle(blob, phandle);
1474 if (offset < 0) {
1475 debug("failed to find node for phandle %u\n", phandle);
1476 return offset;
1477 }
1478
1479 carveout->start = fdtdec_get_addr_size_auto_noparent(blob, offset,
1480 "reg", 0, &size,
1481 true);
1482 if (carveout->start == FDT_ADDR_T_NONE) {
1483 debug("failed to read address/size from \"reg\" property\n");
1484 return -FDT_ERR_NOTFOUND;
1485 }
1486
1487 carveout->end = carveout->start + size - 1;
1488
1489 return 0;
1490}
1491
1492int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name,
1493 unsigned int index, const char *name,
1494 const struct fdt_memory *carveout)
1495{
1496 uint32_t phandle;
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001497 int err, offset, len;
Thierry Reding16523ac2019-03-21 19:10:03 +01001498 fdt32_t value;
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001499 void *prop;
Thierry Reding16523ac2019-03-21 19:10:03 +01001500
Etienne Carriereccaa5742020-09-10 10:49:59 +02001501 err = fdtdec_add_reserved_memory(blob, name, carveout, &phandle, false);
Thierry Reding16523ac2019-03-21 19:10:03 +01001502 if (err < 0) {
1503 debug("failed to add reserved memory: %d\n", err);
1504 return err;
1505 }
1506
1507 offset = fdt_path_offset(blob, node);
1508 if (offset < 0) {
1509 debug("failed to find offset for node %s: %d\n", node, offset);
1510 return offset;
1511 }
1512
1513 value = cpu_to_fdt32(phandle);
1514
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001515 if (!fdt_getprop(blob, offset, prop_name, &len)) {
1516 if (len == -FDT_ERR_NOTFOUND)
1517 len = 0;
1518 else
1519 return len;
1520 }
1521
1522 if ((index + 1) * sizeof(value) > len) {
1523 err = fdt_setprop_placeholder(blob, offset, prop_name,
1524 (index + 1) * sizeof(value),
1525 &prop);
1526 if (err < 0) {
1527 debug("failed to resize reserved memory property: %s\n",
1528 fdt_strerror(err));
1529 return err;
1530 }
1531 }
1532
1533 err = fdt_setprop_inplace_namelen_partial(blob, offset, prop_name,
1534 strlen(prop_name),
1535 index * sizeof(value),
1536 &value, sizeof(value));
Thierry Reding16523ac2019-03-21 19:10:03 +01001537 if (err < 0) {
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001538 debug("failed to update %s property for node %s: %s\n",
1539 prop_name, node, fdt_strerror(err));
Thierry Reding16523ac2019-03-21 19:10:03 +01001540 return err;
1541 }
1542
1543 return 0;
1544}
1545
Marek Vasut0e2afc82020-04-11 21:18:59 +02001546__weak int fdtdec_board_setup(const void *fdt_blob)
1547{
1548 return 0;
1549}
1550
Simon Glass08793612015-02-27 22:06:35 -07001551int fdtdec_setup(void)
Simon Glassb45122f2015-02-27 22:06:34 -07001552{
Marek Vasut0e2afc82020-04-11 21:18:59 +02001553 int ret;
Masahiro Yamada0f925822015-08-12 07:31:55 +09001554#if CONFIG_IS_ENABLED(OF_CONTROL)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001555# if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1556 void *fdt_blob;
1557# endif
Simon Glassb45122f2015-02-27 22:06:34 -07001558# ifdef CONFIG_OF_EMBED
1559 /* Get a pointer to the FDT */
Goldschmidt Simon9bd76b82017-11-21 12:29:56 +00001560# ifdef CONFIG_SPL_BUILD
1561 gd->fdt_blob = __dtb_dt_spl_begin;
1562# else
Simon Glassb45122f2015-02-27 22:06:34 -07001563 gd->fdt_blob = __dtb_dt_begin;
Goldschmidt Simon9bd76b82017-11-21 12:29:56 +00001564# endif
Rob Clark3b595da2018-01-10 11:34:37 +01001565# elif defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
Alex Deymo82f766d2017-04-02 01:25:20 -07001566 /* Allow the board to override the fdt address. */
1567 gd->fdt_blob = board_fdt_blob_setup();
Simon Glassb45122f2015-02-27 22:06:34 -07001568# elif defined(CONFIG_OF_HOSTFILE)
1569 if (sandbox_read_fdt_from_file()) {
1570 puts("Failed to read control FDT\n");
1571 return -1;
1572 }
Lukas Auerc4f603f2019-08-21 21:14:40 +02001573# elif defined(CONFIG_OF_PRIOR_STAGE)
1574 gd->fdt_blob = (void *)prior_stage_fdt_address;
Simon Glassb45122f2015-02-27 22:06:34 -07001575# endif
1576# ifndef CONFIG_SPL_BUILD
1577 /* Allow the early environment to override the fdt address */
Heinrich Schuchardtf980c992018-11-18 17:58:50 +01001578 gd->fdt_blob = map_sysmem
1579 (env_get_ulong("fdtcontroladdr", 16,
1580 (unsigned long)map_to_sysmem(gd->fdt_blob)), 0);
Simon Glassb45122f2015-02-27 22:06:34 -07001581# endif
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001582
1583# if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1584 /*
1585 * Try and uncompress the blob.
1586 * Unfortunately there is no way to know how big the input blob really
1587 * is. So let us set the maximum input size arbitrarily high. 16MB
1588 * ought to be more than enough for packed DTBs.
1589 */
1590 if (uncompress_blob(gd->fdt_blob, 0x1000000, &fdt_blob) == 0)
1591 gd->fdt_blob = fdt_blob;
1592
1593 /*
1594 * Check if blob is a FIT images containings DTBs.
1595 * If so, pick the most relevant
1596 */
1597 fdt_blob = locate_dtb_in_fit(gd->fdt_blob);
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001598 if (fdt_blob) {
1599 gd->multi_dtb_fit = gd->fdt_blob;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001600 gd->fdt_blob = fdt_blob;
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001601 }
1602
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001603# endif
Simon Glassb45122f2015-02-27 22:06:34 -07001604#endif
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001605
Marek Vasut0e2afc82020-04-11 21:18:59 +02001606 ret = fdtdec_prepare_fdt();
1607 if (!ret)
1608 ret = fdtdec_board_setup(gd->fdt_blob);
1609 return ret;
Simon Glassb45122f2015-02-27 22:06:34 -07001610}
1611
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001612#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1613int fdtdec_resetup(int *rescan)
1614{
1615 void *fdt_blob;
1616
1617 /*
1618 * If the current DTB is part of a compressed FIT image,
1619 * try to locate the best match from the uncompressed
1620 * FIT image stillpresent there. Save the time and space
1621 * required to uncompress it again.
1622 */
1623 if (gd->multi_dtb_fit) {
1624 fdt_blob = locate_dtb_in_fit(gd->multi_dtb_fit);
1625
1626 if (fdt_blob == gd->fdt_blob) {
1627 /*
1628 * The best match did not change. no need to tear down
1629 * the DM and rescan the fdt.
1630 */
1631 *rescan = 0;
1632 return 0;
1633 }
1634
1635 *rescan = 1;
1636 gd->fdt_blob = fdt_blob;
1637 return fdtdec_prepare_fdt();
1638 }
1639
1640 /*
1641 * If multi_dtb_fit is NULL, it means that blob appended to u-boot is
1642 * not a FIT image containings DTB, but a single DTB. There is no need
1643 * to teard down DM and rescan the DT in this case.
1644 */
1645 *rescan = 0;
1646 return 0;
1647}
1648#endif
1649
Michael Pratt90c08fa2018-06-11 13:07:09 -06001650int fdtdec_decode_ram_size(const void *blob, const char *area, int board_id,
Masahiro Yamadab75d8dc2020-06-26 15:13:33 +09001651 phys_addr_t *basep, phys_size_t *sizep,
1652 struct bd_info *bd)
Michael Pratt90c08fa2018-06-11 13:07:09 -06001653{
1654 int addr_cells, size_cells;
1655 const u32 *cell, *end;
1656 u64 total_size, size, addr;
1657 int node, child;
1658 bool auto_size;
1659 int bank;
1660 int len;
1661
1662 debug("%s: board_id=%d\n", __func__, board_id);
1663 if (!area)
1664 area = "/memory";
1665 node = fdt_path_offset(blob, area);
1666 if (node < 0) {
1667 debug("No %s node found\n", area);
1668 return -ENOENT;
1669 }
1670
1671 cell = fdt_getprop(blob, node, "reg", &len);
1672 if (!cell) {
1673 debug("No reg property found\n");
1674 return -ENOENT;
1675 }
1676
1677 addr_cells = fdt_address_cells(blob, node);
1678 size_cells = fdt_size_cells(blob, node);
1679
1680 /* Check the board id and mask */
1681 for (child = fdt_first_subnode(blob, node);
1682 child >= 0;
1683 child = fdt_next_subnode(blob, child)) {
1684 int match_mask, match_value;
1685
1686 match_mask = fdtdec_get_int(blob, child, "match-mask", -1);
1687 match_value = fdtdec_get_int(blob, child, "match-value", -1);
1688
1689 if (match_value >= 0 &&
1690 ((board_id & match_mask) == match_value)) {
1691 /* Found matching mask */
1692 debug("Found matching mask %d\n", match_mask);
1693 node = child;
1694 cell = fdt_getprop(blob, node, "reg", &len);
1695 if (!cell) {
1696 debug("No memory-banks property found\n");
1697 return -EINVAL;
1698 }
1699 break;
1700 }
1701 }
1702 /* Note: if no matching subnode was found we use the parent node */
1703
1704 if (bd) {
1705 memset(bd->bi_dram, '\0', sizeof(bd->bi_dram[0]) *
1706 CONFIG_NR_DRAM_BANKS);
1707 }
1708
1709 auto_size = fdtdec_get_bool(blob, node, "auto-size");
1710
1711 total_size = 0;
1712 end = cell + len / 4 - addr_cells - size_cells;
1713 debug("cell at %p, end %p\n", cell, end);
1714 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
1715 if (cell > end)
1716 break;
1717 addr = 0;
1718 if (addr_cells == 2)
1719 addr += (u64)fdt32_to_cpu(*cell++) << 32UL;
1720 addr += fdt32_to_cpu(*cell++);
1721 if (bd)
1722 bd->bi_dram[bank].start = addr;
1723 if (basep && !bank)
1724 *basep = (phys_addr_t)addr;
1725
1726 size = 0;
1727 if (size_cells == 2)
1728 size += (u64)fdt32_to_cpu(*cell++) << 32UL;
1729 size += fdt32_to_cpu(*cell++);
1730
1731 if (auto_size) {
1732 u64 new_size;
1733
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001734 debug("Auto-sizing %llx, size %llx: ", addr, size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001735 new_size = get_ram_size((long *)(uintptr_t)addr, size);
1736 if (new_size == size) {
1737 debug("OK\n");
1738 } else {
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001739 debug("sized to %llx\n", new_size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001740 size = new_size;
1741 }
1742 }
1743
1744 if (bd)
1745 bd->bi_dram[bank].size = size;
1746 total_size += size;
1747 }
1748
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001749 debug("Memory size %llu\n", total_size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001750 if (sizep)
1751 *sizep = (phys_size_t)total_size;
1752
1753 return 0;
1754}
Michael Pratt90c08fa2018-06-11 13:07:09 -06001755
Simon Glassb45122f2015-02-27 22:06:34 -07001756#endif /* !USE_HOSTCC */