blob: 1f2b763acc312a27490a11ecc3a2dd42e3dfced3 [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>
Simon Glassb5220bc2011-10-24 19:15:32 +000027
28DECLARE_GLOBAL_DATA_PTR;
29
30/*
31 * Here are the type we know about. One day we might allow drivers to
32 * register. For now we just put them here. The COMPAT macro allows us to
33 * turn this into a sparse list later, and keeps the ID with the name.
Simon Glass01a227d2016-06-19 17:33:13 -060034 *
35 * NOTE: This list is basically a TODO list for things that need to be
36 * converted to driver model. So don't add new things here unless there is a
37 * good reason why driver-model conversion is infeasible. Examples include
38 * things which are used before driver model is available.
Simon Glassb5220bc2011-10-24 19:15:32 +000039 */
40#define COMPAT(id, name) name
41static const char * const compat_names[COMPAT_COUNT] = {
Simon Glassf88fe2d2012-02-27 10:52:34 +000042 COMPAT(UNKNOWN, "<none>"),
Jimmy Zhang0e35ad02012-04-02 13:18:52 +000043 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
44 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
Jim Lin312693c2012-07-29 20:53:29 +000045 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
Thierry Reding79c7a902014-12-09 22:25:09 -070046 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070047 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
Hatim RVcc9fe332012-12-11 00:52:46 +000048 COMPAT(SMSC_LAN9215, "smsc,lan9215"),
49 COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
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 Glassa53f4a22012-01-17 08:20:50 +000079const char *fdtdec_get_compatible(enum fdt_compat_id id)
80{
81 /* We allow reading of the 'unknown' ID for testing purposes */
82 assert(id >= 0 && id < COMPAT_COUNT);
83 return compat_names[id];
84}
85
Stephen Warren02464e32015-08-06 15:31:02 -060086fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +010087 const char *prop_name, int index, int na,
88 int ns, fdt_size_t *sizep,
89 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -060090{
91 const fdt32_t *prop, *prop_end;
92 const fdt32_t *prop_addr, *prop_size, *prop_after_size;
93 int len;
94 fdt_addr_t addr;
95
96 debug("%s: %s: ", __func__, prop_name);
97
Stephen Warren02464e32015-08-06 15:31:02 -060098 prop = fdt_getprop(blob, node, prop_name, &len);
99 if (!prop) {
100 debug("(not found)\n");
101 return FDT_ADDR_T_NONE;
102 }
103 prop_end = prop + (len / sizeof(*prop));
104
105 prop_addr = prop + (index * (na + ns));
106 prop_size = prop_addr + na;
107 prop_after_size = prop_size + ns;
108 if (prop_after_size > prop_end) {
109 debug("(not enough data: expected >= %d cells, got %d cells)\n",
110 (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
111 return FDT_ADDR_T_NONE;
112 }
113
Vignesh R5efa1bf2017-03-20 10:04:38 +0530114#if CONFIG_IS_ENABLED(OF_TRANSLATE)
Stephen Warren6e06acb2016-08-05 09:47:51 -0600115 if (translate)
116 addr = fdt_translate_address(blob, node, prop_addr);
117 else
118#endif
119 addr = fdtdec_get_number(prop_addr, na);
Stephen Warren02464e32015-08-06 15:31:02 -0600120
121 if (sizep) {
122 *sizep = fdtdec_get_number(prop_size, ns);
Simon Glassfd30d2c2016-02-29 15:25:37 -0700123 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
124 (unsigned long long)*sizep);
Stephen Warren02464e32015-08-06 15:31:02 -0600125 } else {
Simon Glassfd30d2c2016-02-29 15:25:37 -0700126 debug("addr=%08llx\n", (unsigned long long)addr);
Stephen Warren02464e32015-08-06 15:31:02 -0600127 }
128
129 return addr;
130}
131
132fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
Mario Six2e386622018-01-15 11:07:35 +0100133 int node, const char *prop_name,
134 int index, fdt_size_t *sizep,
135 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600136{
137 int na, ns;
138
139 debug("%s: ", __func__);
140
141 na = fdt_address_cells(blob, parent);
142 if (na < 1) {
143 debug("(bad #address-cells)\n");
144 return FDT_ADDR_T_NONE;
145 }
146
147 ns = fdt_size_cells(blob, parent);
Przemyslaw Marczakff0a6352015-09-30 13:14:50 +0200148 if (ns < 0) {
Stephen Warren02464e32015-08-06 15:31:02 -0600149 debug("(bad #size-cells)\n");
150 return FDT_ADDR_T_NONE;
151 }
152
153 debug("na=%d, ns=%d, ", na, ns);
154
155 return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600156 ns, sizep, translate);
Stephen Warren02464e32015-08-06 15:31:02 -0600157}
158
159fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100160 const char *prop_name, int index,
161 fdt_size_t *sizep,
162 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600163{
164 int parent;
165
166 debug("%s: ", __func__);
167
168 parent = fdt_parent_offset(blob, node);
169 if (parent < 0) {
170 debug("(no parent found)\n");
171 return FDT_ADDR_T_NONE;
172 }
173
174 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600175 index, sizep, translate);
Stephen Warren02464e32015-08-06 15:31:02 -0600176}
177
Simon Glass4397a2a2013-03-19 04:58:51 +0000178fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100179 const char *prop_name, fdt_size_t *sizep)
Simon Glassb5220bc2011-10-24 19:15:32 +0000180{
Stephen Warrend93b9a02015-09-25 10:11:41 -0600181 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
182
Stephen Warren02464e32015-08-06 15:31:02 -0600183 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
184 sizeof(fdt_addr_t) / sizeof(fdt32_t),
Stephen Warren6e06acb2016-08-05 09:47:51 -0600185 ns, sizep, false);
Simon Glassb5220bc2011-10-24 19:15:32 +0000186}
187
Mario Six2e386622018-01-15 11:07:35 +0100188fdt_addr_t fdtdec_get_addr(const void *blob, int node, const char *prop_name)
Simon Glass4397a2a2013-03-19 04:58:51 +0000189{
190 return fdtdec_get_addr_size(blob, node, prop_name, NULL);
191}
192
Sekhar Norid50d6812018-12-06 15:40:08 +0530193#if CONFIG_IS_ENABLED(PCI) && defined(CONFIG_DM_PCI)
Bin Menga62e84d2014-12-31 16:05:11 +0800194int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
195{
196 const char *list, *end;
197 int len;
198
199 list = fdt_getprop(blob, node, "compatible", &len);
200 if (!list)
201 return -ENOENT;
202
203 end = list + len;
204 while (list < end) {
Bin Menga62e84d2014-12-31 16:05:11 +0800205 len = strlen(list);
206 if (len >= strlen("pciVVVV,DDDD")) {
Mario Sixb79221a2018-01-15 11:07:36 +0100207 char *s = strstr(list, "pci");
Bin Menga62e84d2014-12-31 16:05:11 +0800208
209 /*
210 * check if the string is something like pciVVVV,DDDD.RR
211 * or just pciVVVV,DDDD
212 */
213 if (s && s[7] == ',' &&
214 (s[12] == '.' || s[12] == 0)) {
215 s += 3;
216 *vendor = simple_strtol(s, NULL, 16);
217
218 s += 5;
219 *device = simple_strtol(s, NULL, 16);
220
221 return 0;
222 }
Bin Menga62e84d2014-12-31 16:05:11 +0800223 }
Bin Mengbc6351e2015-08-20 06:40:25 -0700224 list += (len + 1);
Bin Menga62e84d2014-12-31 16:05:11 +0800225 }
226
227 return -ENOENT;
228}
229
Simon Glass194fca92020-01-27 08:49:38 -0700230int fdtdec_get_pci_bar32(const struct udevice *dev, struct fdt_pci_addr *addr,
Simon Glassfcc0a872015-11-29 13:17:54 -0700231 u32 *bar)
Bin Menga62e84d2014-12-31 16:05:11 +0800232{
Bin Menga62e84d2014-12-31 16:05:11 +0800233 int barnum;
Bin Menga62e84d2014-12-31 16:05:11 +0800234
235 /* extract the bar number from fdt_pci_addr */
236 barnum = addr->phys_hi & 0xff;
Mario Sixb79221a2018-01-15 11:07:36 +0100237 if (barnum < PCI_BASE_ADDRESS_0 || barnum > PCI_CARDBUS_CIS)
Bin Menga62e84d2014-12-31 16:05:11 +0800238 return -EINVAL;
239
240 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
Simon Glassfcc0a872015-11-29 13:17:54 -0700241 *bar = dm_pci_read_bar32(dev, barnum);
Bin Menga62e84d2014-12-31 16:05:11 +0800242
243 return 0;
244}
245#endif
246
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000247uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100248 uint64_t default_val)
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000249{
Jean-Jacques Hiblotd60ae4c2019-10-22 10:05:22 +0200250 const unaligned_fdt64_t *cell64;
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000251 int length;
252
253 cell64 = fdt_getprop(blob, node, prop_name, &length);
254 if (!cell64 || length < sizeof(*cell64))
255 return default_val;
256
257 return fdt64_to_cpu(*cell64);
258}
259
Simon Glassf88fe2d2012-02-27 10:52:34 +0000260int fdtdec_get_is_enabled(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000261{
262 const char *cell;
263
Simon Glassf88fe2d2012-02-27 10:52:34 +0000264 /*
265 * It should say "okay", so only allow that. Some fdts use "ok" but
266 * this is a bug. Please fix your device tree source file. See here
267 * for discussion:
268 *
269 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
270 */
Simon Glassb5220bc2011-10-24 19:15:32 +0000271 cell = fdt_getprop(blob, node, "status", NULL);
272 if (cell)
Mario Sixb79221a2018-01-15 11:07:36 +0100273 return strcmp(cell, "okay") == 0;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000274 return 1;
Simon Glassb5220bc2011-10-24 19:15:32 +0000275}
276
Gerald Van Baren7cde3972012-11-12 23:13:54 -0500277enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000278{
279 enum fdt_compat_id id;
280
281 /* Search our drivers */
282 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
Mario Sixb79221a2018-01-15 11:07:36 +0100283 if (fdt_node_check_compatible(blob, node,
284 compat_names[id]) == 0)
Simon Glassb5220bc2011-10-24 19:15:32 +0000285 return id;
286 return COMPAT_UNKNOWN;
287}
288
Mario Six2e386622018-01-15 11:07:35 +0100289int fdtdec_next_compatible(const void *blob, int node, enum fdt_compat_id id)
Simon Glassb5220bc2011-10-24 19:15:32 +0000290{
291 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
292}
293
Simon Glass3ddecfc2012-04-02 13:18:42 +0000294int fdtdec_next_compatible_subnode(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100295 enum fdt_compat_id id, int *depthp)
Simon Glass3ddecfc2012-04-02 13:18:42 +0000296{
297 do {
298 node = fdt_next_node(blob, node, depthp);
299 } while (*depthp > 1);
300
301 /* If this is a direct subnode, and compatible, return it */
302 if (*depthp == 1 && 0 == fdt_node_check_compatible(
303 blob, node, compat_names[id]))
304 return node;
305
306 return -FDT_ERR_NOTFOUND;
307}
308
Mario Six2e386622018-01-15 11:07:35 +0100309int fdtdec_next_alias(const void *blob, const char *name, enum fdt_compat_id id,
310 int *upto)
Simon Glassb5220bc2011-10-24 19:15:32 +0000311{
312#define MAX_STR_LEN 20
313 char str[MAX_STR_LEN + 20];
314 int node, err;
315
316 /* snprintf() is not available */
317 assert(strlen(name) < MAX_STR_LEN);
318 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
Simon Glass00878472012-10-31 14:02:42 +0000319 node = fdt_path_offset(blob, str);
Simon Glassb5220bc2011-10-24 19:15:32 +0000320 if (node < 0)
321 return node;
322 err = fdt_node_check_compatible(blob, node, compat_names[id]);
323 if (err < 0)
324 return err;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000325 if (err)
326 return -FDT_ERR_NOTFOUND;
327 (*upto)++;
328 return node;
Simon Glassb5220bc2011-10-24 19:15:32 +0000329}
330
Simon Glassa53f4a22012-01-17 08:20:50 +0000331int fdtdec_find_aliases_for_id(const void *blob, const char *name,
Mario Six2e386622018-01-15 11:07:35 +0100332 enum fdt_compat_id id, int *node_list,
333 int maxcount)
Simon Glassa53f4a22012-01-17 08:20:50 +0000334{
Simon Glassc6782272012-02-03 15:13:53 +0000335 memset(node_list, '\0', sizeof(*node_list) * maxcount);
336
337 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
338}
339
340/* TODO: Can we tighten this code up a little? */
341int fdtdec_add_aliases_for_id(const void *blob, const char *name,
Mario Six2e386622018-01-15 11:07:35 +0100342 enum fdt_compat_id id, int *node_list,
343 int maxcount)
Simon Glassc6782272012-02-03 15:13:53 +0000344{
Simon Glassa53f4a22012-01-17 08:20:50 +0000345 int name_len = strlen(name);
346 int nodes[maxcount];
347 int num_found = 0;
348 int offset, node;
349 int alias_node;
350 int count;
351 int i, j;
352
353 /* find the alias node if present */
354 alias_node = fdt_path_offset(blob, "/aliases");
355
356 /*
357 * start with nothing, and we can assume that the root node can't
358 * match
359 */
360 memset(nodes, '\0', sizeof(nodes));
361
362 /* First find all the compatible nodes */
363 for (node = count = 0; node >= 0 && count < maxcount;) {
364 node = fdtdec_next_compatible(blob, node, id);
365 if (node >= 0)
366 nodes[count++] = node;
367 }
368 if (node >= 0)
369 debug("%s: warning: maxcount exceeded with alias '%s'\n",
Mario Six2e386622018-01-15 11:07:35 +0100370 __func__, name);
Simon Glassa53f4a22012-01-17 08:20:50 +0000371
372 /* Now find all the aliases */
Simon Glassa53f4a22012-01-17 08:20:50 +0000373 for (offset = fdt_first_property_offset(blob, alias_node);
374 offset > 0;
375 offset = fdt_next_property_offset(blob, offset)) {
376 const struct fdt_property *prop;
377 const char *path;
378 int number;
379 int found;
380
381 node = 0;
382 prop = fdt_get_property_by_offset(blob, offset, NULL);
383 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
384 if (prop->len && 0 == strncmp(path, name, name_len))
385 node = fdt_path_offset(blob, prop->data);
386 if (node <= 0)
387 continue;
388
389 /* Get the alias number */
390 number = simple_strtoul(path + name_len, NULL, 10);
391 if (number < 0 || number >= maxcount) {
392 debug("%s: warning: alias '%s' is out of range\n",
Mario Six2e386622018-01-15 11:07:35 +0100393 __func__, path);
Simon Glassa53f4a22012-01-17 08:20:50 +0000394 continue;
395 }
396
397 /* Make sure the node we found is actually in our list! */
398 found = -1;
399 for (j = 0; j < count; j++)
400 if (nodes[j] == node) {
401 found = j;
402 break;
403 }
404
405 if (found == -1) {
406 debug("%s: warning: alias '%s' points to a node "
407 "'%s' that is missing or is not compatible "
408 " with '%s'\n", __func__, path,
409 fdt_get_name(blob, node, NULL),
410 compat_names[id]);
411 continue;
412 }
413
414 /*
415 * Add this node to our list in the right place, and mark
416 * it as done.
417 */
418 if (fdtdec_get_is_enabled(blob, node)) {
Simon Glassc6782272012-02-03 15:13:53 +0000419 if (node_list[number]) {
420 debug("%s: warning: alias '%s' requires that "
421 "a node be placed in the list in a "
422 "position which is already filled by "
423 "node '%s'\n", __func__, path,
424 fdt_get_name(blob, node, NULL));
425 continue;
426 }
Simon Glassa53f4a22012-01-17 08:20:50 +0000427 node_list[number] = node;
428 if (number >= num_found)
429 num_found = number + 1;
430 }
Simon Glassc6782272012-02-03 15:13:53 +0000431 nodes[found] = 0;
Simon Glassa53f4a22012-01-17 08:20:50 +0000432 }
433
434 /* Add any nodes not mentioned by an alias */
435 for (i = j = 0; i < maxcount; i++) {
436 if (!node_list[i]) {
437 for (; j < maxcount; j++)
438 if (nodes[j] &&
Mario Six2e386622018-01-15 11:07:35 +0100439 fdtdec_get_is_enabled(blob, nodes[j]))
Simon Glassa53f4a22012-01-17 08:20:50 +0000440 break;
441
442 /* Have we run out of nodes to add? */
443 if (j == maxcount)
444 break;
445
446 assert(!node_list[i]);
447 node_list[i] = nodes[j++];
448 if (i >= num_found)
449 num_found = i + 1;
450 }
451 }
452
453 return num_found;
454}
455
Simon Glass5c33c9f2014-07-23 06:55:09 -0600456int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
457 int *seqp)
458{
459 int base_len = strlen(base);
460 const char *find_name;
461 int find_namelen;
462 int prop_offset;
463 int aliases;
464
465 find_name = fdt_get_name(blob, offset, &find_namelen);
466 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
467
468 aliases = fdt_path_offset(blob, "/aliases");
469 for (prop_offset = fdt_first_property_offset(blob, aliases);
470 prop_offset > 0;
471 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
472 const char *prop;
473 const char *name;
474 const char *slash;
Simon Glassc4af6732015-06-23 15:39:08 -0600475 int len, val;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600476
477 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
478 debug(" - %s, %s\n", name, prop);
479 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
480 strncmp(name, base, base_len))
481 continue;
482
483 slash = strrchr(prop, '/');
484 if (strcmp(slash + 1, find_name))
485 continue;
Simon Glassc4af6732015-06-23 15:39:08 -0600486 val = trailing_strtol(name);
487 if (val != -1) {
488 *seqp = val;
489 debug("Found seq %d\n", *seqp);
490 return 0;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600491 }
492 }
493
494 debug("Not found\n");
495 return -ENOENT;
496}
497
Michal Simek003c9dc2019-01-31 16:30:58 +0100498int fdtdec_get_alias_highest_id(const void *blob, const char *base)
499{
500 int base_len = strlen(base);
501 int prop_offset;
502 int aliases;
503 int max = -1;
504
505 debug("Looking for highest alias id for '%s'\n", base);
506
507 aliases = fdt_path_offset(blob, "/aliases");
508 for (prop_offset = fdt_first_property_offset(blob, aliases);
509 prop_offset > 0;
510 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
511 const char *prop;
512 const char *name;
513 int len, val;
514
515 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
516 debug(" - %s, %s\n", name, prop);
517 if (*prop != '/' || prop[len - 1] ||
518 strncmp(name, base, base_len))
519 continue;
520
521 val = trailing_strtol(name);
522 if (val > max) {
523 debug("Found seq %d\n", val);
524 max = val;
525 }
526 }
527
528 return max;
529}
530
Simon Glass3bc37a52015-10-17 19:41:14 -0600531const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
532{
533 int chosen_node;
534
535 if (!blob)
536 return NULL;
537 chosen_node = fdt_path_offset(blob, "/chosen");
538 return fdt_getprop(blob, chosen_node, name, NULL);
539}
540
Simon Glassaac07d42014-09-04 16:27:24 -0600541int fdtdec_get_chosen_node(const void *blob, const char *name)
542{
543 const char *prop;
Simon Glassaac07d42014-09-04 16:27:24 -0600544
Simon Glass3bc37a52015-10-17 19:41:14 -0600545 prop = fdtdec_get_chosen_prop(blob, name);
Simon Glassaac07d42014-09-04 16:27:24 -0600546 if (!prop)
547 return -FDT_ERR_NOTFOUND;
548 return fdt_path_offset(blob, prop);
549}
550
Simon Glass9a263e52012-03-28 10:08:24 +0000551int fdtdec_check_fdt(void)
552{
553 /*
554 * We must have an FDT, but we cannot panic() yet since the console
555 * is not ready. So for now, just assert(). Boards which need an early
556 * FDT (prior to console ready) will need to make their own
557 * arrangements and do their own checks.
558 */
559 assert(!fdtdec_prepare_fdt());
560 return 0;
561}
562
Simon Glassb5220bc2011-10-24 19:15:32 +0000563/*
564 * This function is a little odd in that it accesses global data. At some
565 * point if the architecture board.c files merge this will make more sense.
566 * Even now, it is common code.
567 */
Simon Glass9a263e52012-03-28 10:08:24 +0000568int fdtdec_prepare_fdt(void)
Simon Glassb5220bc2011-10-24 19:15:32 +0000569{
Simon Glassc309c2d2013-04-20 08:42:46 +0000570 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
571 fdt_check_header(gd->fdt_blob)) {
Simon Glass66312372015-02-27 22:06:32 -0700572#ifdef CONFIG_SPL_BUILD
573 puts("Missing DTB\n");
574#else
575 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 -0600576# ifdef DEBUG
577 if (gd->fdt_blob) {
578 printf("fdt_blob=%p\n", gd->fdt_blob);
579 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
580 32, 0);
581 }
582# endif
Simon Glass66312372015-02-27 22:06:32 -0700583#endif
Simon Glass9a263e52012-03-28 10:08:24 +0000584 return -1;
585 }
Simon Glassb5220bc2011-10-24 19:15:32 +0000586 return 0;
587}
Simon Glassd17da652012-02-27 10:52:35 +0000588
589int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
590{
591 const u32 *phandle;
592 int lookup;
593
Simon Glass1cb23232012-07-12 05:25:01 +0000594 debug("%s: %s\n", __func__, prop_name);
Simon Glassd17da652012-02-27 10:52:35 +0000595 phandle = fdt_getprop(blob, node, prop_name, NULL);
596 if (!phandle)
597 return -FDT_ERR_NOTFOUND;
598
599 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
600 return lookup;
601}
602
603/**
604 * Look up a property in a node and check that it has a minimum length.
605 *
606 * @param blob FDT blob
607 * @param node node to examine
608 * @param prop_name name of property to find
609 * @param min_len minimum property length in bytes
610 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
611 found, or -FDT_ERR_BADLAYOUT if not enough data
612 * @return pointer to cell, which is only valid if err == 0
613 */
614static const void *get_prop_check_min_len(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100615 const char *prop_name, int min_len,
616 int *err)
Simon Glassd17da652012-02-27 10:52:35 +0000617{
618 const void *cell;
619 int len;
620
621 debug("%s: %s\n", __func__, prop_name);
622 cell = fdt_getprop(blob, node, prop_name, &len);
623 if (!cell)
624 *err = -FDT_ERR_NOTFOUND;
625 else if (len < min_len)
626 *err = -FDT_ERR_BADLAYOUT;
627 else
628 *err = 0;
629 return cell;
630}
631
632int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100633 u32 *array, int count)
Simon Glassd17da652012-02-27 10:52:35 +0000634{
635 const u32 *cell;
Mario Sixb79221a2018-01-15 11:07:36 +0100636 int err = 0;
Simon Glassd17da652012-02-27 10:52:35 +0000637
638 debug("%s: %s\n", __func__, prop_name);
639 cell = get_prop_check_min_len(blob, node, prop_name,
640 sizeof(u32) * count, &err);
641 if (!err) {
Mario Sixb79221a2018-01-15 11:07:36 +0100642 int i;
643
Simon Glassd17da652012-02-27 10:52:35 +0000644 for (i = 0; i < count; i++)
645 array[i] = fdt32_to_cpu(cell[i]);
646 }
647 return err;
648}
649
Simon Glassa9f04d42014-11-10 18:00:19 -0700650int fdtdec_get_int_array_count(const void *blob, int node,
651 const char *prop_name, u32 *array, int count)
652{
653 const u32 *cell;
654 int len, elems;
655 int i;
656
657 debug("%s: %s\n", __func__, prop_name);
658 cell = fdt_getprop(blob, node, prop_name, &len);
659 if (!cell)
660 return -FDT_ERR_NOTFOUND;
661 elems = len / sizeof(u32);
662 if (count > elems)
663 count = elems;
664 for (i = 0; i < count; i++)
665 array[i] = fdt32_to_cpu(cell[i]);
666
667 return count;
668}
669
Simon Glass96875e72012-04-02 13:18:41 +0000670const u32 *fdtdec_locate_array(const void *blob, int node,
671 const char *prop_name, int count)
672{
673 const u32 *cell;
674 int err;
675
676 cell = get_prop_check_min_len(blob, node, prop_name,
677 sizeof(u32) * count, &err);
678 return err ? NULL : cell;
679}
680
Simon Glassd17da652012-02-27 10:52:35 +0000681int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
682{
683 const s32 *cell;
684 int len;
685
686 debug("%s: %s\n", __func__, prop_name);
687 cell = fdt_getprop(blob, node, prop_name, &len);
688 return cell != NULL;
689}
Simon Glassed3ee5c2012-02-27 10:52:36 +0000690
Simon Glass57068a72015-01-05 20:05:26 -0700691int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
692 const char *list_name,
693 const char *cells_name,
694 int cell_count, int index,
695 struct fdtdec_phandle_args *out_args)
696{
697 const __be32 *list, *list_end;
698 int rc = 0, size, cur_index = 0;
699 uint32_t count = 0;
700 int node = -1;
701 int phandle;
702
703 /* Retrieve the phandle list property */
704 list = fdt_getprop(blob, src_node, list_name, &size);
705 if (!list)
706 return -ENOENT;
707 list_end = list + size / sizeof(*list);
708
709 /* Loop over the phandles until all the requested entry is found */
710 while (list < list_end) {
711 rc = -EINVAL;
712 count = 0;
713
714 /*
715 * If phandle is 0, then it is an empty entry with no
716 * arguments. Skip forward to the next entry.
717 */
718 phandle = be32_to_cpup(list++);
719 if (phandle) {
720 /*
721 * Find the provider node and parse the #*-cells
722 * property to determine the argument length.
723 *
724 * This is not needed if the cell count is hard-coded
725 * (i.e. cells_name not set, but cell_count is set),
726 * except when we're going to return the found node
727 * below.
728 */
729 if (cells_name || cur_index == index) {
730 node = fdt_node_offset_by_phandle(blob,
731 phandle);
732 if (!node) {
733 debug("%s: could not find phandle\n",
734 fdt_get_name(blob, src_node,
735 NULL));
736 goto err;
737 }
738 }
739
740 if (cells_name) {
741 count = fdtdec_get_int(blob, node, cells_name,
742 -1);
743 if (count == -1) {
744 debug("%s: could not get %s for %s\n",
745 fdt_get_name(blob, src_node,
746 NULL),
747 cells_name,
748 fdt_get_name(blob, node,
749 NULL));
750 goto err;
751 }
752 } else {
753 count = cell_count;
754 }
755
756 /*
757 * Make sure that the arguments actually fit in the
758 * remaining property data length
759 */
760 if (list + count > list_end) {
761 debug("%s: arguments longer than property\n",
762 fdt_get_name(blob, src_node, NULL));
763 goto err;
764 }
765 }
766
767 /*
768 * All of the error cases above bail out of the loop, so at
769 * this point, the parsing is successful. If the requested
770 * index matches, then fill the out_args structure and return,
771 * or return -ENOENT for an empty entry.
772 */
773 rc = -ENOENT;
774 if (cur_index == index) {
775 if (!phandle)
776 goto err;
777
778 if (out_args) {
779 int i;
780
781 if (count > MAX_PHANDLE_ARGS) {
782 debug("%s: too many arguments %d\n",
783 fdt_get_name(blob, src_node,
784 NULL), count);
785 count = MAX_PHANDLE_ARGS;
786 }
787 out_args->node = node;
788 out_args->args_count = count;
789 for (i = 0; i < count; i++) {
790 out_args->args[i] =
791 be32_to_cpup(list++);
792 }
793 }
794
795 /* Found it! return success */
796 return 0;
797 }
798
799 node = -1;
800 list += count;
801 cur_index++;
802 }
803
804 /*
805 * Result will be one of:
806 * -ENOENT : index is for empty phandle
807 * -EINVAL : parsing error on data
808 * [1..n] : Number of phandle (count mode; when index = -1)
809 */
810 rc = index < 0 ? cur_index : -ENOENT;
811 err:
812 return rc;
813}
814
Anton Staffbed4d892012-04-17 09:01:28 +0000815int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100816 u8 *array, int count)
Anton Staffbed4d892012-04-17 09:01:28 +0000817{
818 const u8 *cell;
819 int err;
820
821 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
822 if (!err)
823 memcpy(array, cell, count);
824 return err;
825}
826
827const u8 *fdtdec_locate_byte_array(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100828 const char *prop_name, int count)
Anton Staffbed4d892012-04-17 09:01:28 +0000829{
830 const u8 *cell;
831 int err;
832
833 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
834 if (err)
835 return NULL;
836 return cell;
837}
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000838
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000839int fdtdec_get_config_int(const void *blob, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100840 int default_val)
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000841{
842 int config_node;
843
844 debug("%s: %s\n", __func__, prop_name);
845 config_node = fdt_path_offset(blob, "/config");
846 if (config_node < 0)
847 return default_val;
848 return fdtdec_get_int(blob, config_node, prop_name, default_val);
849}
Simon Glass332ab0d2012-10-25 16:30:59 +0000850
Gabe Black79289c02012-10-25 16:31:04 +0000851int fdtdec_get_config_bool(const void *blob, const char *prop_name)
852{
853 int config_node;
854 const void *prop;
855
856 debug("%s: %s\n", __func__, prop_name);
857 config_node = fdt_path_offset(blob, "/config");
858 if (config_node < 0)
859 return 0;
860 prop = fdt_get_property(blob, config_node, prop_name, NULL);
861
862 return prop != NULL;
863}
864
Simon Glass332ab0d2012-10-25 16:30:59 +0000865char *fdtdec_get_config_string(const void *blob, const char *prop_name)
866{
867 const char *nodep;
868 int nodeoffset;
869 int len;
870
871 debug("%s: %s\n", __func__, prop_name);
872 nodeoffset = fdt_path_offset(blob, "/config");
873 if (nodeoffset < 0)
874 return NULL;
875
876 nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
877 if (!nodep)
878 return NULL;
879
880 return (char *)nodep;
881}
Simon Glassf20c4612012-10-25 16:31:00 +0000882
Simon Glass5f7bfdd2015-03-05 12:25:14 -0700883u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
Thierry Reding56f42242014-08-26 17:33:53 +0200884{
885 u64 number = 0;
886
887 while (cells--)
888 number = (number << 32) | fdt32_to_cpu(*ptr++);
889
890 return number;
891}
892
893int fdt_get_resource(const void *fdt, int node, const char *property,
894 unsigned int index, struct fdt_resource *res)
895{
896 const fdt32_t *ptr, *end;
897 int na, ns, len, parent;
898 unsigned int i = 0;
899
900 parent = fdt_parent_offset(fdt, node);
901 if (parent < 0)
902 return parent;
903
904 na = fdt_address_cells(fdt, parent);
905 ns = fdt_size_cells(fdt, parent);
906
907 ptr = fdt_getprop(fdt, node, property, &len);
908 if (!ptr)
909 return len;
910
911 end = ptr + len / sizeof(*ptr);
912
913 while (ptr + na + ns <= end) {
914 if (i == index) {
Mario Sixb79221a2018-01-15 11:07:36 +0100915 res->start = fdtdec_get_number(ptr, na);
916 res->end = res->start;
Thierry Reding56f42242014-08-26 17:33:53 +0200917 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
918 return 0;
919 }
920
921 ptr += na + ns;
922 i++;
923 }
924
925 return -FDT_ERR_NOTFOUND;
926}
927
928int fdt_get_named_resource(const void *fdt, int node, const char *property,
929 const char *prop_names, const char *name,
930 struct fdt_resource *res)
931{
932 int index;
933
Simon Glassb02e4042016-10-02 17:59:28 -0600934 index = fdt_stringlist_search(fdt, node, prop_names, name);
Thierry Reding56f42242014-08-26 17:33:53 +0200935 if (index < 0)
936 return index;
937
938 return fdt_get_resource(fdt, node, property, index, res);
939}
Thierry Reding9f85eee2014-08-26 17:33:54 +0200940
Simon Glass12e67112015-04-14 21:03:21 -0600941static int decode_timing_property(const void *blob, int node, const char *name,
942 struct timing_entry *result)
943{
944 int length, ret = 0;
945 const u32 *prop;
946
947 prop = fdt_getprop(blob, node, name, &length);
948 if (!prop) {
949 debug("%s: could not find property %s\n",
950 fdt_get_name(blob, node, NULL), name);
951 return length;
952 }
953
954 if (length == sizeof(u32)) {
955 result->typ = fdtdec_get_int(blob, node, name, 0);
956 result->min = result->typ;
957 result->max = result->typ;
958 } else {
959 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
960 }
961
962 return ret;
963}
964
965int fdtdec_decode_display_timing(const void *blob, int parent, int index,
966 struct display_timing *dt)
967{
968 int i, node, timings_node;
969 u32 val = 0;
970 int ret = 0;
971
972 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
973 if (timings_node < 0)
974 return timings_node;
975
976 for (i = 0, node = fdt_first_subnode(blob, timings_node);
977 node > 0 && i != index;
978 node = fdt_next_subnode(blob, node))
979 i++;
980
981 if (node < 0)
982 return node;
983
984 memset(dt, 0, sizeof(*dt));
985
986 ret |= decode_timing_property(blob, node, "hback-porch",
987 &dt->hback_porch);
988 ret |= decode_timing_property(blob, node, "hfront-porch",
989 &dt->hfront_porch);
990 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
991 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
992 ret |= decode_timing_property(blob, node, "vback-porch",
993 &dt->vback_porch);
994 ret |= decode_timing_property(blob, node, "vfront-porch",
995 &dt->vfront_porch);
996 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
997 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
998 ret |= decode_timing_property(blob, node, "clock-frequency",
999 &dt->pixelclock);
1000
1001 dt->flags = 0;
1002 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1003 if (val != -1) {
1004 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1005 DISPLAY_FLAGS_VSYNC_LOW;
1006 }
1007 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1008 if (val != -1) {
1009 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1010 DISPLAY_FLAGS_HSYNC_LOW;
1011 }
1012 val = fdtdec_get_int(blob, node, "de-active", -1);
1013 if (val != -1) {
1014 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1015 DISPLAY_FLAGS_DE_LOW;
1016 }
1017 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1018 if (val != -1) {
1019 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1020 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1021 }
1022
1023 if (fdtdec_get_bool(blob, node, "interlaced"))
1024 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1025 if (fdtdec_get_bool(blob, node, "doublescan"))
1026 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1027 if (fdtdec_get_bool(blob, node, "doubleclk"))
1028 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1029
Simon Glass04b9dd12016-05-05 07:28:21 -06001030 return ret;
Simon Glass12e67112015-04-14 21:03:21 -06001031}
1032
Marek Vasut3ebe09d2019-03-05 04:25:54 +01001033int fdtdec_setup_mem_size_base_fdt(const void *blob)
Nathan Rossi623f6012016-12-19 00:03:34 +10001034{
1035 int ret, mem;
1036 struct fdt_resource res;
1037
Marek Vasut3ebe09d2019-03-05 04:25:54 +01001038 mem = fdt_path_offset(blob, "/memory");
Nathan Rossi623f6012016-12-19 00:03:34 +10001039 if (mem < 0) {
1040 debug("%s: Missing /memory node\n", __func__);
1041 return -EINVAL;
1042 }
1043
Marek Vasut3ebe09d2019-03-05 04:25:54 +01001044 ret = fdt_get_resource(blob, mem, "reg", 0, &res);
Nathan Rossi623f6012016-12-19 00:03:34 +10001045 if (ret != 0) {
1046 debug("%s: Unable to decode first memory bank\n", __func__);
1047 return -EINVAL;
1048 }
1049
1050 gd->ram_size = (phys_size_t)(res.end - res.start + 1);
Siva Durga Prasad Paladugu1473b122018-07-16 15:56:10 +05301051 gd->ram_base = (unsigned long)res.start;
Simon Glassc69380f2017-05-27 07:38:13 -06001052 debug("%s: Initial DRAM size %llx\n", __func__,
1053 (unsigned long long)gd->ram_size);
Nathan Rossi623f6012016-12-19 00:03:34 +10001054
1055 return 0;
1056}
1057
Marek Vasut3ebe09d2019-03-05 04:25:54 +01001058int fdtdec_setup_mem_size_base(void)
1059{
1060 return fdtdec_setup_mem_size_base_fdt(gd->fdt_blob);
1061}
1062
Nathan Rossi623f6012016-12-19 00:03:34 +10001063#if defined(CONFIG_NR_DRAM_BANKS)
Jens Wiklander452bc122018-07-13 12:12:11 +02001064
Michal Simek658954c2018-10-03 15:53:52 +02001065static int get_next_memory_node(const void *blob, int mem)
Jens Wiklander452bc122018-07-13 12:12:11 +02001066{
Jens Wiklander452bc122018-07-13 12:12:11 +02001067 do {
Marek Vasut118f4d42019-03-05 04:25:55 +01001068 mem = fdt_node_offset_by_prop_value(blob, mem,
Michal Simek658954c2018-10-03 15:53:52 +02001069 "device_type", "memory", 7);
1070 } while (!fdtdec_get_is_enabled(blob, mem));
Jens Wiklander452bc122018-07-13 12:12:11 +02001071
1072 return mem;
1073}
1074
Marek Vasut118f4d42019-03-05 04:25:55 +01001075int fdtdec_setup_memory_banksize_fdt(const void *blob)
Nathan Rossi623f6012016-12-19 00:03:34 +10001076{
Michal Simek658954c2018-10-03 15:53:52 +02001077 int bank, ret, mem, reg = 0;
1078 struct fdt_resource res;
Nathan Rossi623f6012016-12-19 00:03:34 +10001079
Marek Vasut118f4d42019-03-05 04:25:55 +01001080 mem = get_next_memory_node(blob, -1);
Michal Simek658954c2018-10-03 15:53:52 +02001081 if (mem < 0) {
1082 debug("%s: Missing /memory node\n", __func__);
1083 return -EINVAL;
1084 }
Nathan Rossi623f6012016-12-19 00:03:34 +10001085
1086 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
Marek Vasut118f4d42019-03-05 04:25:55 +01001087 ret = fdt_get_resource(blob, mem, "reg", reg++, &res);
Michal Simek658954c2018-10-03 15:53:52 +02001088 if (ret == -FDT_ERR_NOTFOUND) {
Marek Vasut942ee092017-11-27 05:32:42 +01001089 reg = 0;
Marek Vasut118f4d42019-03-05 04:25:55 +01001090 mem = get_next_memory_node(blob, mem);
Michal Simek658954c2018-10-03 15:53:52 +02001091 if (mem == -FDT_ERR_NOTFOUND)
1092 break;
1093
Marek Vasut118f4d42019-03-05 04:25:55 +01001094 ret = fdt_get_resource(blob, mem, "reg", reg++, &res);
Michal Simek658954c2018-10-03 15:53:52 +02001095 if (ret == -FDT_ERR_NOTFOUND)
1096 break;
1097 }
1098 if (ret != 0) {
1099 return -EINVAL;
Marek Vasut942ee092017-11-27 05:32:42 +01001100 }
Nathan Rossi623f6012016-12-19 00:03:34 +10001101
1102 gd->bd->bi_dram[bank].start = (phys_addr_t)res.start;
1103 gd->bd->bi_dram[bank].size =
1104 (phys_size_t)(res.end - res.start + 1);
1105
1106 debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
1107 __func__, bank,
1108 (unsigned long long)gd->bd->bi_dram[bank].start,
1109 (unsigned long long)gd->bd->bi_dram[bank].size);
1110 }
1111
1112 return 0;
1113}
Marek Vasut118f4d42019-03-05 04:25:55 +01001114
1115int fdtdec_setup_memory_banksize(void)
1116{
1117 return fdtdec_setup_memory_banksize_fdt(gd->fdt_blob);
1118
1119}
Nathan Rossi623f6012016-12-19 00:03:34 +10001120#endif
1121
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001122#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1123# if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\
1124 CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO)
1125static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1126{
Marek Vasut95f4bbd2019-03-08 16:06:55 +01001127 size_t sz_out = CONFIG_VAL(MULTI_DTB_FIT_UNCOMPRESS_SZ);
Marek Vasut1fd30352019-03-13 21:11:22 +01001128 bool gzip = 0, lzo = 0;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001129 ulong sz_in = sz_src;
1130 void *dst;
1131 int rc;
1132
1133 if (CONFIG_IS_ENABLED(GZIP))
Marek Vasut1fd30352019-03-13 21:11:22 +01001134 if (gzip_parse_header(src, sz_in) >= 0)
1135 gzip = 1;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001136 if (CONFIG_IS_ENABLED(LZO))
Marek Vasut1fd30352019-03-13 21:11:22 +01001137 if (!gzip && lzop_is_valid_header(src))
1138 lzo = 1;
1139
1140 if (!gzip && !lzo)
1141 return -EBADMSG;
1142
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001143
1144 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) {
1145 dst = malloc(sz_out);
1146 if (!dst) {
1147 puts("uncompress_blob: Unable to allocate memory\n");
1148 return -ENOMEM;
1149 }
1150 } else {
1151# if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA)
1152 dst = (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR);
1153# else
1154 return -ENOTSUPP;
1155# endif
1156 }
1157
Marek Vasut1fd30352019-03-13 21:11:22 +01001158 if (CONFIG_IS_ENABLED(GZIP) && gzip)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001159 rc = gunzip(dst, sz_out, (u8 *)src, &sz_in);
Marek Vasut1fd30352019-03-13 21:11:22 +01001160 else if (CONFIG_IS_ENABLED(LZO) && lzo)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001161 rc = lzop_decompress(src, sz_in, dst, &sz_out);
Marek Vasut1fd30352019-03-13 21:11:22 +01001162 else
1163 hang();
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001164
1165 if (rc < 0) {
1166 /* not a valid compressed blob */
1167 puts("uncompress_blob: Unable to uncompress\n");
1168 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC))
1169 free(dst);
1170 return -EBADMSG;
1171 }
1172 *dstp = dst;
1173 return 0;
1174}
1175# else
1176static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1177{
Marek Vasut410d9b62018-10-18 20:37:05 +02001178 *dstp = (void *)src;
1179 return 0;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001180}
1181# endif
1182#endif
1183
Rob Clark3b595da2018-01-10 11:34:37 +01001184#if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
1185/*
1186 * For CONFIG_OF_SEPARATE, the board may optionally implement this to
1187 * provide and/or fixup the fdt.
1188 */
1189__weak void *board_fdt_blob_setup(void)
1190{
1191 void *fdt_blob = NULL;
1192#ifdef CONFIG_SPL_BUILD
1193 /* FDT is at end of BSS unless it is in a different memory region */
1194 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
1195 fdt_blob = (ulong *)&_image_binary_end;
1196 else
1197 fdt_blob = (ulong *)&__bss_end;
1198#else
1199 /* FDT is at end of image */
1200 fdt_blob = (ulong *)&_end;
1201#endif
1202 return fdt_blob;
1203}
1204#endif
1205
Thierry Redingebf30e82019-04-15 11:32:13 +02001206int fdtdec_set_ethernet_mac_address(void *fdt, const u8 *mac, size_t size)
1207{
1208 const char *path;
1209 int offset, err;
1210
1211 if (!is_valid_ethaddr(mac))
1212 return -EINVAL;
1213
1214 path = fdt_get_alias(fdt, "ethernet");
1215 if (!path)
1216 return 0;
1217
1218 debug("ethernet alias found: %s\n", path);
1219
1220 offset = fdt_path_offset(fdt, path);
1221 if (offset < 0) {
1222 debug("ethernet alias points to absent node %s\n", path);
1223 return -ENOENT;
1224 }
1225
1226 err = fdt_setprop_inplace(fdt, offset, "local-mac-address", mac, size);
1227 if (err < 0)
1228 return err;
1229
1230 debug("MAC address: %pM\n", mac);
1231
1232 return 0;
1233}
1234
Thierry Redingc9222a02019-03-21 19:10:02 +01001235static int fdtdec_init_reserved_memory(void *blob)
1236{
1237 int na, ns, node, err;
1238 fdt32_t value;
1239
1240 /* inherit #address-cells and #size-cells from the root node */
1241 na = fdt_address_cells(blob, 0);
1242 ns = fdt_size_cells(blob, 0);
1243
1244 node = fdt_add_subnode(blob, 0, "reserved-memory");
1245 if (node < 0)
1246 return node;
1247
1248 err = fdt_setprop(blob, node, "ranges", NULL, 0);
1249 if (err < 0)
1250 return err;
1251
1252 value = cpu_to_fdt32(ns);
1253
1254 err = fdt_setprop(blob, node, "#size-cells", &value, sizeof(value));
1255 if (err < 0)
1256 return err;
1257
1258 value = cpu_to_fdt32(na);
1259
1260 err = fdt_setprop(blob, node, "#address-cells", &value, sizeof(value));
1261 if (err < 0)
1262 return err;
1263
1264 return node;
1265}
1266
1267int fdtdec_add_reserved_memory(void *blob, const char *basename,
1268 const struct fdt_memory *carveout,
1269 uint32_t *phandlep)
1270{
1271 fdt32_t cells[4] = {}, *ptr = cells;
1272 uint32_t upper, lower, phandle;
1273 int parent, node, na, ns, err;
Thierry Reding3bf2f152019-04-15 10:08:21 +02001274 fdt_size_t size;
Thierry Redingc9222a02019-03-21 19:10:02 +01001275 char name[64];
1276
1277 /* create an empty /reserved-memory node if one doesn't exist */
1278 parent = fdt_path_offset(blob, "/reserved-memory");
1279 if (parent < 0) {
1280 parent = fdtdec_init_reserved_memory(blob);
1281 if (parent < 0)
1282 return parent;
1283 }
1284
1285 /* only 1 or 2 #address-cells and #size-cells are supported */
1286 na = fdt_address_cells(blob, parent);
1287 if (na < 1 || na > 2)
1288 return -FDT_ERR_BADNCELLS;
1289
1290 ns = fdt_size_cells(blob, parent);
1291 if (ns < 1 || ns > 2)
1292 return -FDT_ERR_BADNCELLS;
1293
1294 /* find a matching node and return the phandle to that */
1295 fdt_for_each_subnode(node, blob, parent) {
1296 const char *name = fdt_get_name(blob, node, NULL);
1297 phys_addr_t addr, size;
1298
1299 addr = fdtdec_get_addr_size(blob, node, "reg", &size);
1300 if (addr == FDT_ADDR_T_NONE) {
1301 debug("failed to read address/size for %s\n", name);
1302 continue;
1303 }
1304
Atish Patraf6147532020-04-21 11:15:00 -07001305 if (addr == carveout->start && (addr + size - 1) ==
1306 carveout->end) {
Heiko Stuebner086336a2019-10-23 16:46:38 +02001307 if (phandlep)
1308 *phandlep = fdt_get_phandle(blob, node);
Thierry Redingc9222a02019-03-21 19:10:02 +01001309 return 0;
1310 }
1311 }
1312
1313 /*
1314 * Unpack the start address and generate the name of the new node
1315 * base on the basename and the unit-address.
1316 */
Thierry Reding3bf2f152019-04-15 10:08:21 +02001317 upper = upper_32_bits(carveout->start);
1318 lower = lower_32_bits(carveout->start);
Thierry Redingc9222a02019-03-21 19:10:02 +01001319
1320 if (na > 1 && upper > 0)
1321 snprintf(name, sizeof(name), "%s@%x,%x", basename, upper,
1322 lower);
1323 else {
1324 if (upper > 0) {
1325 debug("address %08x:%08x exceeds addressable space\n",
1326 upper, lower);
1327 return -FDT_ERR_BADVALUE;
1328 }
1329
1330 snprintf(name, sizeof(name), "%s@%x", basename, lower);
1331 }
1332
1333 node = fdt_add_subnode(blob, parent, name);
1334 if (node < 0)
1335 return node;
1336
Heiko Stuebner357d2ce2019-10-23 16:46:39 +02001337 if (phandlep) {
1338 err = fdt_generate_phandle(blob, &phandle);
1339 if (err < 0)
1340 return err;
Thierry Redingc9222a02019-03-21 19:10:02 +01001341
Heiko Stuebner357d2ce2019-10-23 16:46:39 +02001342 err = fdtdec_set_phandle(blob, node, phandle);
1343 if (err < 0)
1344 return err;
1345 }
Thierry Redingc9222a02019-03-21 19:10:02 +01001346
1347 /* store one or two address cells */
1348 if (na > 1)
1349 *ptr++ = cpu_to_fdt32(upper);
1350
1351 *ptr++ = cpu_to_fdt32(lower);
1352
1353 /* store one or two size cells */
Thierry Reding3bf2f152019-04-15 10:08:21 +02001354 size = carveout->end - carveout->start + 1;
1355 upper = upper_32_bits(size);
1356 lower = lower_32_bits(size);
Thierry Redingc9222a02019-03-21 19:10:02 +01001357
1358 if (ns > 1)
1359 *ptr++ = cpu_to_fdt32(upper);
1360
1361 *ptr++ = cpu_to_fdt32(lower);
1362
1363 err = fdt_setprop(blob, node, "reg", cells, (na + ns) * sizeof(*cells));
1364 if (err < 0)
1365 return err;
1366
1367 /* return the phandle for the new node for the caller to use */
1368 if (phandlep)
1369 *phandlep = phandle;
1370
1371 return 0;
1372}
1373
Thierry Reding16523ac2019-03-21 19:10:03 +01001374int fdtdec_get_carveout(const void *blob, const char *node, const char *name,
1375 unsigned int index, struct fdt_memory *carveout)
1376{
1377 const fdt32_t *prop;
1378 uint32_t phandle;
1379 int offset, len;
1380 fdt_size_t size;
1381
1382 offset = fdt_path_offset(blob, node);
1383 if (offset < 0)
1384 return offset;
1385
1386 prop = fdt_getprop(blob, offset, name, &len);
1387 if (!prop) {
1388 debug("failed to get %s for %s\n", name, node);
1389 return -FDT_ERR_NOTFOUND;
1390 }
1391
1392 if ((len % sizeof(phandle)) != 0) {
1393 debug("invalid phandle property\n");
1394 return -FDT_ERR_BADPHANDLE;
1395 }
1396
1397 if (len < (sizeof(phandle) * (index + 1))) {
1398 debug("invalid phandle index\n");
1399 return -FDT_ERR_BADPHANDLE;
1400 }
1401
1402 phandle = fdt32_to_cpu(prop[index]);
1403
1404 offset = fdt_node_offset_by_phandle(blob, phandle);
1405 if (offset < 0) {
1406 debug("failed to find node for phandle %u\n", phandle);
1407 return offset;
1408 }
1409
1410 carveout->start = fdtdec_get_addr_size_auto_noparent(blob, offset,
1411 "reg", 0, &size,
1412 true);
1413 if (carveout->start == FDT_ADDR_T_NONE) {
1414 debug("failed to read address/size from \"reg\" property\n");
1415 return -FDT_ERR_NOTFOUND;
1416 }
1417
1418 carveout->end = carveout->start + size - 1;
1419
1420 return 0;
1421}
1422
1423int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name,
1424 unsigned int index, const char *name,
1425 const struct fdt_memory *carveout)
1426{
1427 uint32_t phandle;
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001428 int err, offset, len;
Thierry Reding16523ac2019-03-21 19:10:03 +01001429 fdt32_t value;
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001430 void *prop;
Thierry Reding16523ac2019-03-21 19:10:03 +01001431
1432 err = fdtdec_add_reserved_memory(blob, name, carveout, &phandle);
1433 if (err < 0) {
1434 debug("failed to add reserved memory: %d\n", err);
1435 return err;
1436 }
1437
1438 offset = fdt_path_offset(blob, node);
1439 if (offset < 0) {
1440 debug("failed to find offset for node %s: %d\n", node, offset);
1441 return offset;
1442 }
1443
1444 value = cpu_to_fdt32(phandle);
1445
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001446 if (!fdt_getprop(blob, offset, prop_name, &len)) {
1447 if (len == -FDT_ERR_NOTFOUND)
1448 len = 0;
1449 else
1450 return len;
1451 }
1452
1453 if ((index + 1) * sizeof(value) > len) {
1454 err = fdt_setprop_placeholder(blob, offset, prop_name,
1455 (index + 1) * sizeof(value),
1456 &prop);
1457 if (err < 0) {
1458 debug("failed to resize reserved memory property: %s\n",
1459 fdt_strerror(err));
1460 return err;
1461 }
1462 }
1463
1464 err = fdt_setprop_inplace_namelen_partial(blob, offset, prop_name,
1465 strlen(prop_name),
1466 index * sizeof(value),
1467 &value, sizeof(value));
Thierry Reding16523ac2019-03-21 19:10:03 +01001468 if (err < 0) {
Laurentiu Tudorb9200b12020-04-03 13:43:03 +03001469 debug("failed to update %s property for node %s: %s\n",
1470 prop_name, node, fdt_strerror(err));
Thierry Reding16523ac2019-03-21 19:10:03 +01001471 return err;
1472 }
1473
1474 return 0;
1475}
1476
Marek Vasut0e2afc82020-04-11 21:18:59 +02001477__weak int fdtdec_board_setup(const void *fdt_blob)
1478{
1479 return 0;
1480}
1481
Simon Glass08793612015-02-27 22:06:35 -07001482int fdtdec_setup(void)
Simon Glassb45122f2015-02-27 22:06:34 -07001483{
Marek Vasut0e2afc82020-04-11 21:18:59 +02001484 int ret;
Masahiro Yamada0f925822015-08-12 07:31:55 +09001485#if CONFIG_IS_ENABLED(OF_CONTROL)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001486# if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1487 void *fdt_blob;
1488# endif
Simon Glassb45122f2015-02-27 22:06:34 -07001489# ifdef CONFIG_OF_EMBED
1490 /* Get a pointer to the FDT */
Goldschmidt Simon9bd76b82017-11-21 12:29:56 +00001491# ifdef CONFIG_SPL_BUILD
1492 gd->fdt_blob = __dtb_dt_spl_begin;
1493# else
Simon Glassb45122f2015-02-27 22:06:34 -07001494 gd->fdt_blob = __dtb_dt_begin;
Goldschmidt Simon9bd76b82017-11-21 12:29:56 +00001495# endif
Rob Clark3b595da2018-01-10 11:34:37 +01001496# elif defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
Alex Deymo82f766d2017-04-02 01:25:20 -07001497 /* Allow the board to override the fdt address. */
1498 gd->fdt_blob = board_fdt_blob_setup();
Simon Glassb45122f2015-02-27 22:06:34 -07001499# elif defined(CONFIG_OF_HOSTFILE)
1500 if (sandbox_read_fdt_from_file()) {
1501 puts("Failed to read control FDT\n");
1502 return -1;
1503 }
Lukas Auerc4f603f2019-08-21 21:14:40 +02001504# elif defined(CONFIG_OF_PRIOR_STAGE)
1505 gd->fdt_blob = (void *)prior_stage_fdt_address;
Simon Glassb45122f2015-02-27 22:06:34 -07001506# endif
1507# ifndef CONFIG_SPL_BUILD
1508 /* Allow the early environment to override the fdt address */
Heinrich Schuchardtf980c992018-11-18 17:58:50 +01001509 gd->fdt_blob = map_sysmem
1510 (env_get_ulong("fdtcontroladdr", 16,
1511 (unsigned long)map_to_sysmem(gd->fdt_blob)), 0);
Simon Glassb45122f2015-02-27 22:06:34 -07001512# endif
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001513
1514# if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1515 /*
1516 * Try and uncompress the blob.
1517 * Unfortunately there is no way to know how big the input blob really
1518 * is. So let us set the maximum input size arbitrarily high. 16MB
1519 * ought to be more than enough for packed DTBs.
1520 */
1521 if (uncompress_blob(gd->fdt_blob, 0x1000000, &fdt_blob) == 0)
1522 gd->fdt_blob = fdt_blob;
1523
1524 /*
1525 * Check if blob is a FIT images containings DTBs.
1526 * If so, pick the most relevant
1527 */
1528 fdt_blob = locate_dtb_in_fit(gd->fdt_blob);
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001529 if (fdt_blob) {
1530 gd->multi_dtb_fit = gd->fdt_blob;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001531 gd->fdt_blob = fdt_blob;
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001532 }
1533
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001534# endif
Simon Glassb45122f2015-02-27 22:06:34 -07001535#endif
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001536
Marek Vasut0e2afc82020-04-11 21:18:59 +02001537 ret = fdtdec_prepare_fdt();
1538 if (!ret)
1539 ret = fdtdec_board_setup(gd->fdt_blob);
1540 return ret;
Simon Glassb45122f2015-02-27 22:06:34 -07001541}
1542
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001543#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1544int fdtdec_resetup(int *rescan)
1545{
1546 void *fdt_blob;
1547
1548 /*
1549 * If the current DTB is part of a compressed FIT image,
1550 * try to locate the best match from the uncompressed
1551 * FIT image stillpresent there. Save the time and space
1552 * required to uncompress it again.
1553 */
1554 if (gd->multi_dtb_fit) {
1555 fdt_blob = locate_dtb_in_fit(gd->multi_dtb_fit);
1556
1557 if (fdt_blob == gd->fdt_blob) {
1558 /*
1559 * The best match did not change. no need to tear down
1560 * the DM and rescan the fdt.
1561 */
1562 *rescan = 0;
1563 return 0;
1564 }
1565
1566 *rescan = 1;
1567 gd->fdt_blob = fdt_blob;
1568 return fdtdec_prepare_fdt();
1569 }
1570
1571 /*
1572 * If multi_dtb_fit is NULL, it means that blob appended to u-boot is
1573 * not a FIT image containings DTB, but a single DTB. There is no need
1574 * to teard down DM and rescan the DT in this case.
1575 */
1576 *rescan = 0;
1577 return 0;
1578}
1579#endif
1580
Michael Pratt90c08fa2018-06-11 13:07:09 -06001581#ifdef CONFIG_NR_DRAM_BANKS
1582int fdtdec_decode_ram_size(const void *blob, const char *area, int board_id,
1583 phys_addr_t *basep, phys_size_t *sizep, bd_t *bd)
1584{
1585 int addr_cells, size_cells;
1586 const u32 *cell, *end;
1587 u64 total_size, size, addr;
1588 int node, child;
1589 bool auto_size;
1590 int bank;
1591 int len;
1592
1593 debug("%s: board_id=%d\n", __func__, board_id);
1594 if (!area)
1595 area = "/memory";
1596 node = fdt_path_offset(blob, area);
1597 if (node < 0) {
1598 debug("No %s node found\n", area);
1599 return -ENOENT;
1600 }
1601
1602 cell = fdt_getprop(blob, node, "reg", &len);
1603 if (!cell) {
1604 debug("No reg property found\n");
1605 return -ENOENT;
1606 }
1607
1608 addr_cells = fdt_address_cells(blob, node);
1609 size_cells = fdt_size_cells(blob, node);
1610
1611 /* Check the board id and mask */
1612 for (child = fdt_first_subnode(blob, node);
1613 child >= 0;
1614 child = fdt_next_subnode(blob, child)) {
1615 int match_mask, match_value;
1616
1617 match_mask = fdtdec_get_int(blob, child, "match-mask", -1);
1618 match_value = fdtdec_get_int(blob, child, "match-value", -1);
1619
1620 if (match_value >= 0 &&
1621 ((board_id & match_mask) == match_value)) {
1622 /* Found matching mask */
1623 debug("Found matching mask %d\n", match_mask);
1624 node = child;
1625 cell = fdt_getprop(blob, node, "reg", &len);
1626 if (!cell) {
1627 debug("No memory-banks property found\n");
1628 return -EINVAL;
1629 }
1630 break;
1631 }
1632 }
1633 /* Note: if no matching subnode was found we use the parent node */
1634
1635 if (bd) {
1636 memset(bd->bi_dram, '\0', sizeof(bd->bi_dram[0]) *
1637 CONFIG_NR_DRAM_BANKS);
1638 }
1639
1640 auto_size = fdtdec_get_bool(blob, node, "auto-size");
1641
1642 total_size = 0;
1643 end = cell + len / 4 - addr_cells - size_cells;
1644 debug("cell at %p, end %p\n", cell, end);
1645 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
1646 if (cell > end)
1647 break;
1648 addr = 0;
1649 if (addr_cells == 2)
1650 addr += (u64)fdt32_to_cpu(*cell++) << 32UL;
1651 addr += fdt32_to_cpu(*cell++);
1652 if (bd)
1653 bd->bi_dram[bank].start = addr;
1654 if (basep && !bank)
1655 *basep = (phys_addr_t)addr;
1656
1657 size = 0;
1658 if (size_cells == 2)
1659 size += (u64)fdt32_to_cpu(*cell++) << 32UL;
1660 size += fdt32_to_cpu(*cell++);
1661
1662 if (auto_size) {
1663 u64 new_size;
1664
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001665 debug("Auto-sizing %llx, size %llx: ", addr, size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001666 new_size = get_ram_size((long *)(uintptr_t)addr, size);
1667 if (new_size == size) {
1668 debug("OK\n");
1669 } else {
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001670 debug("sized to %llx\n", new_size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001671 size = new_size;
1672 }
1673 }
1674
1675 if (bd)
1676 bd->bi_dram[bank].size = size;
1677 total_size += size;
1678 }
1679
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001680 debug("Memory size %llu\n", total_size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001681 if (sizep)
1682 *sizep = (phys_size_t)total_size;
1683
1684 return 0;
1685}
1686#endif /* CONFIG_NR_DRAM_BANKS */
1687
Simon Glassb45122f2015-02-27 22:06:34 -07001688#endif /* !USE_HOSTCC */