blob: 17051d409c4998ad5b47382e378bd9a267eab4ce [file] [log] [blame]
Tom Rini10e47792018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Simon Glass2d2af852011-10-24 19:15:32 +00002/*
3 * Copyright (c) 2011 The Chromium OS Authors.
Simon Glass2d2af852011-10-24 19:15:32 +00004 */
5
Heiko Schocherd7b42322014-03-03 12:19:30 +01006#ifndef USE_HOSTCC
Simon Glass2d2af852011-10-24 19:15:32 +00007#include <common.h>
Jean-Jacques Hiblot5d96cab2017-09-15 12:57:31 +02008#include <boot_fit.h>
Simon Glassf1037ad2015-11-29 13:17:54 -07009#include <dm.h>
Simon Glassf11478f2019-12-28 10:45:07 -070010#include <hang.h>
Simon Glass8e16b1e2019-12-28 10:45:05 -070011#include <init.h>
Jean-Jacques Hiblot5d96cab2017-09-15 12:57:31 +020012#include <dm/of_extra.h>
Simon Glass6eaea252019-08-01 09:46:48 -060013#include <env.h>
Simon Glass9908ad42014-07-23 06:55:09 -060014#include <errno.h>
Simon Glass2d2af852011-10-24 19:15:32 +000015#include <fdtdec.h>
Jean-Jacques Hiblot5d96cab2017-09-15 12:57:31 +020016#include <fdt_support.h>
Simon Glass1a974af2019-08-01 09:46:36 -060017#include <gzip.h>
Heinrich Schuchardt370a1762018-11-18 17:58:50 +010018#include <mapmem.h>
Masahiro Yamada75f82d02018-03-05 01:20:11 +090019#include <linux/libfdt.h>
Jean-Jacques Hiblot5d96cab2017-09-15 12:57:31 +020020#include <serial.h>
Simon Glass26b78b22015-02-27 22:06:34 -070021#include <asm/sections.h>
Simon Glass9908ad42014-07-23 06:55:09 -060022#include <linux/ctype.h>
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +020023#include <linux/lzo.h>
Simon Glass2d2af852011-10-24 19:15:32 +000024
25DECLARE_GLOBAL_DATA_PTR;
26
27/*
28 * Here are the type we know about. One day we might allow drivers to
29 * register. For now we just put them here. The COMPAT macro allows us to
30 * turn this into a sparse list later, and keeps the ID with the name.
Simon Glass7c380302016-06-19 17:33:13 -060031 *
32 * NOTE: This list is basically a TODO list for things that need to be
33 * converted to driver model. So don't add new things here unless there is a
34 * good reason why driver-model conversion is infeasible. Examples include
35 * things which are used before driver model is available.
Simon Glass2d2af852011-10-24 19:15:32 +000036 */
37#define COMPAT(id, name) name
38static const char * const compat_names[COMPAT_COUNT] = {
Simon Glass65444982012-02-27 10:52:34 +000039 COMPAT(UNKNOWN, "<none>"),
Jimmy Zhang5983ef82012-04-02 13:18:52 +000040 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
41 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
Jim Lin5d309e62012-07-29 20:53:29 +000042 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
Thierry Redingf202e022014-12-09 22:25:09 -070043 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
Tom Warrenab0cc6b2015-03-04 16:36:00 -070044 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
Hatim RVbe5ad5a2012-12-11 00:52:46 +000045 COMPAT(SMSC_LAN9215, "smsc,lan9215"),
46 COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
Rajeshwari Shinded6e9f442013-01-07 23:35:05 +000047 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
Vivek Gautamf8745232013-09-14 14:02:48 +053048 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
Akshay Saraswataa773182013-02-25 01:13:01 +000049 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
Piotr Wilczek24e368a2014-03-07 14:59:39 +010050 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
Jaehoon Chunge3fb6fa2014-05-16 13:59:51 +090051 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
Neil Armstrongf6625b42019-02-10 10:16:21 +000052 COMPAT(GENERIC_SPI_FLASH, "jedec,spi-nor"),
Ajay Kumare24c5022014-09-05 16:53:33 +053053 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
Simon Glassf79d5382014-11-12 22:42:21 -070054 COMPAT(INTEL_MICROCODE, "intel,microcode"),
Bin Meng2bfd2642015-02-05 23:42:26 +080055 COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
Marek Vasutf3f8fe22015-07-25 19:33:56 +020056 COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
Marek Vasut17497232015-07-25 10:48:14 +020057 COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"),
Marek Vasutf26c1ae2015-12-05 19:28:44 +010058 COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"),
Simon Glass6f70c112016-06-19 17:33:14 -060059 COMPAT(INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"),
60 COMPAT(INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"),
61 COMPAT(INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"),
Boris Brezillon57f20382016-06-15 21:09:23 +020062 COMPAT(COMPAT_SUNXI_NAND, "allwinner,sun4i-a10-nand"),
Ley Foon Tanb25ae722017-04-05 17:32:47 +080063 COMPAT(ALTERA_SOCFPGA_CLK, "altr,clk-mgr"),
64 COMPAT(ALTERA_SOCFPGA_PINCTRL_SINGLE, "pinctrl-single"),
65 COMPAT(ALTERA_SOCFPGA_H2F_BRG, "altr,socfpga-hps2fpga-bridge"),
66 COMPAT(ALTERA_SOCFPGA_LWH2F_BRG, "altr,socfpga-lwhps2fpga-bridge"),
67 COMPAT(ALTERA_SOCFPGA_F2H_BRG, "altr,socfpga-fpga2hps-bridge"),
68 COMPAT(ALTERA_SOCFPGA_F2SDR0, "altr,socfpga-fpga2sdram0-bridge"),
69 COMPAT(ALTERA_SOCFPGA_F2SDR1, "altr,socfpga-fpga2sdram1-bridge"),
70 COMPAT(ALTERA_SOCFPGA_F2SDR2, "altr,socfpga-fpga2sdram2-bridge"),
Tien Fong Cheebbfa5eb2017-09-25 16:40:03 +080071 COMPAT(ALTERA_SOCFPGA_FPGA0, "altr,socfpga-a10-fpga-mgr"),
72 COMPAT(ALTERA_SOCFPGA_NOC, "altr,socfpga-a10-noc"),
Marek Vasutee4e36b2018-05-12 11:56:10 +020073 COMPAT(ALTERA_SOCFPGA_CLK_INIT, "altr,socfpga-a10-clk-init")
Simon Glass2d2af852011-10-24 19:15:32 +000074};
75
Simon Glassb022ead2012-01-17 08:20:50 +000076const char *fdtdec_get_compatible(enum fdt_compat_id id)
77{
78 /* We allow reading of the 'unknown' ID for testing purposes */
79 assert(id >= 0 && id < COMPAT_COUNT);
80 return compat_names[id];
81}
82
Stephen Warren6dfe6182015-08-06 15:31:02 -060083fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
Mario Sixbb3e06c2018-01-15 11:07:35 +010084 const char *prop_name, int index, int na,
85 int ns, fdt_size_t *sizep,
86 bool translate)
Simon Glass2d2af852011-10-24 19:15:32 +000087{
Stephen Warren6dfe6182015-08-06 15:31:02 -060088 const fdt32_t *prop, *prop_end;
89 const fdt32_t *prop_addr, *prop_size, *prop_after_size;
Simon Glass04c50d12015-08-02 18:13:50 -060090 int len;
Stephen Warren6dfe6182015-08-06 15:31:02 -060091 fdt_addr_t addr;
Simon Glass2d2af852011-10-24 19:15:32 +000092
Simon Glassc8c86dd2012-07-12 05:25:01 +000093 debug("%s: %s: ", __func__, prop_name);
Stephen Warren6dfe6182015-08-06 15:31:02 -060094
Stephen Warren6dfe6182015-08-06 15:31:02 -060095 prop = fdt_getprop(blob, node, prop_name, &len);
96 if (!prop) {
97 debug("(not found)\n");
98 return FDT_ADDR_T_NONE;
99 }
100 prop_end = prop + (len / sizeof(*prop));
Simon Glassc8c86dd2012-07-12 05:25:01 +0000101
Stephen Warren6dfe6182015-08-06 15:31:02 -0600102 prop_addr = prop + (index * (na + ns));
103 prop_size = prop_addr + na;
104 prop_after_size = prop_size + ns;
105 if (prop_after_size > prop_end) {
106 debug("(not enough data: expected >= %d cells, got %d cells)\n",
107 (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
108 return FDT_ADDR_T_NONE;
Simon Glassc8c86dd2012-07-12 05:25:01 +0000109 }
Stephen Warren6dfe6182015-08-06 15:31:02 -0600110
Vignesh R621cc092017-03-20 10:04:38 +0530111#if CONFIG_IS_ENABLED(OF_TRANSLATE)
Stephen Warren7d30e102016-08-05 09:47:51 -0600112 if (translate)
113 addr = fdt_translate_address(blob, node, prop_addr);
114 else
115#endif
116 addr = fdtdec_get_number(prop_addr, na);
Stephen Warren6dfe6182015-08-06 15:31:02 -0600117
118 if (sizep) {
119 *sizep = fdtdec_get_number(prop_size, ns);
Simon Glass0b14dc72016-02-29 15:25:37 -0700120 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
121 (unsigned long long)*sizep);
Stephen Warren6dfe6182015-08-06 15:31:02 -0600122 } else {
Simon Glass0b14dc72016-02-29 15:25:37 -0700123 debug("addr=%08llx\n", (unsigned long long)addr);
Stephen Warren6dfe6182015-08-06 15:31:02 -0600124 }
125
126 return addr;
127}
128
129fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100130 int node, const char *prop_name,
131 int index, fdt_size_t *sizep,
132 bool translate)
Stephen Warren6dfe6182015-08-06 15:31:02 -0600133{
134 int na, ns;
135
136 debug("%s: ", __func__);
137
138 na = fdt_address_cells(blob, parent);
139 if (na < 1) {
140 debug("(bad #address-cells)\n");
141 return FDT_ADDR_T_NONE;
142 }
143
144 ns = fdt_size_cells(blob, parent);
Przemyslaw Marczak7b42f4d2015-09-30 13:14:50 +0200145 if (ns < 0) {
Stephen Warren6dfe6182015-08-06 15:31:02 -0600146 debug("(bad #size-cells)\n");
147 return FDT_ADDR_T_NONE;
148 }
149
150 debug("na=%d, ns=%d, ", na, ns);
151
152 return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
Stephen Warren7d30e102016-08-05 09:47:51 -0600153 ns, sizep, translate);
Stephen Warren6dfe6182015-08-06 15:31:02 -0600154}
155
156fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100157 const char *prop_name, int index,
158 fdt_size_t *sizep,
159 bool translate)
Stephen Warren6dfe6182015-08-06 15:31:02 -0600160{
161 int parent;
162
163 debug("%s: ", __func__);
164
165 parent = fdt_parent_offset(blob, node);
166 if (parent < 0) {
167 debug("(no parent found)\n");
168 return FDT_ADDR_T_NONE;
169 }
170
171 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
Stephen Warren7d30e102016-08-05 09:47:51 -0600172 index, sizep, translate);
Stephen Warren6dfe6182015-08-06 15:31:02 -0600173}
174
175fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100176 const char *prop_name, fdt_size_t *sizep)
Stephen Warren6dfe6182015-08-06 15:31:02 -0600177{
Stephen Warrenfda59162015-09-25 10:11:41 -0600178 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
179
Stephen Warren6dfe6182015-08-06 15:31:02 -0600180 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
181 sizeof(fdt_addr_t) / sizeof(fdt32_t),
Stephen Warren7d30e102016-08-05 09:47:51 -0600182 ns, sizep, false);
Simon Glass2d2af852011-10-24 19:15:32 +0000183}
184
Mario Sixbb3e06c2018-01-15 11:07:35 +0100185fdt_addr_t fdtdec_get_addr(const void *blob, int node, const char *prop_name)
Simon Glassf4299552013-03-19 04:58:51 +0000186{
187 return fdtdec_get_addr_size(blob, node, prop_name, NULL);
188}
189
Sekhar Nori9108d922018-12-06 15:40:08 +0530190#if CONFIG_IS_ENABLED(PCI) && defined(CONFIG_DM_PCI)
Bin Meng779847e2014-12-31 16:05:11 +0800191int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
192{
193 const char *list, *end;
194 int len;
195
196 list = fdt_getprop(blob, node, "compatible", &len);
197 if (!list)
198 return -ENOENT;
199
200 end = list + len;
201 while (list < end) {
Bin Meng779847e2014-12-31 16:05:11 +0800202 len = strlen(list);
203 if (len >= strlen("pciVVVV,DDDD")) {
Mario Six6abfbc82018-01-15 11:07:36 +0100204 char *s = strstr(list, "pci");
Bin Meng779847e2014-12-31 16:05:11 +0800205
206 /*
207 * check if the string is something like pciVVVV,DDDD.RR
208 * or just pciVVVV,DDDD
209 */
210 if (s && s[7] == ',' &&
211 (s[12] == '.' || s[12] == 0)) {
212 s += 3;
213 *vendor = simple_strtol(s, NULL, 16);
214
215 s += 5;
216 *device = simple_strtol(s, NULL, 16);
217
218 return 0;
219 }
Bin Meng779847e2014-12-31 16:05:11 +0800220 }
Bin Menga2822b82015-08-20 06:40:25 -0700221 list += (len + 1);
Bin Meng779847e2014-12-31 16:05:11 +0800222 }
223
224 return -ENOENT;
225}
226
Simon Glassf1037ad2015-11-29 13:17:54 -0700227int fdtdec_get_pci_bar32(struct udevice *dev, struct fdt_pci_addr *addr,
228 u32 *bar)
Bin Meng779847e2014-12-31 16:05:11 +0800229{
Bin Meng779847e2014-12-31 16:05:11 +0800230 int barnum;
Bin Meng779847e2014-12-31 16:05:11 +0800231
232 /* extract the bar number from fdt_pci_addr */
233 barnum = addr->phys_hi & 0xff;
Mario Six6abfbc82018-01-15 11:07:36 +0100234 if (barnum < PCI_BASE_ADDRESS_0 || barnum > PCI_CARDBUS_CIS)
Bin Meng779847e2014-12-31 16:05:11 +0800235 return -EINVAL;
236
237 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
Simon Glassf1037ad2015-11-29 13:17:54 -0700238 *bar = dm_pci_read_bar32(dev, barnum);
Bin Meng779847e2014-12-31 16:05:11 +0800239
240 return 0;
241}
242#endif
243
Che-Liang Chioud81d0172012-10-25 16:31:05 +0000244uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100245 uint64_t default_val)
Che-Liang Chioud81d0172012-10-25 16:31:05 +0000246{
Jean-Jacques Hiblot487f9172019-10-22 10:05:22 +0200247 const unaligned_fdt64_t *cell64;
Che-Liang Chioud81d0172012-10-25 16:31:05 +0000248 int length;
249
250 cell64 = fdt_getprop(blob, node, prop_name, &length);
251 if (!cell64 || length < sizeof(*cell64))
252 return default_val;
253
254 return fdt64_to_cpu(*cell64);
255}
256
Simon Glass65444982012-02-27 10:52:34 +0000257int fdtdec_get_is_enabled(const void *blob, int node)
Simon Glass2d2af852011-10-24 19:15:32 +0000258{
259 const char *cell;
260
Simon Glass65444982012-02-27 10:52:34 +0000261 /*
262 * It should say "okay", so only allow that. Some fdts use "ok" but
263 * this is a bug. Please fix your device tree source file. See here
264 * for discussion:
265 *
266 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
267 */
Simon Glass2d2af852011-10-24 19:15:32 +0000268 cell = fdt_getprop(blob, node, "status", NULL);
269 if (cell)
Mario Six6abfbc82018-01-15 11:07:36 +0100270 return strcmp(cell, "okay") == 0;
Simon Glass65444982012-02-27 10:52:34 +0000271 return 1;
Simon Glass2d2af852011-10-24 19:15:32 +0000272}
273
Gerald Van Barencdac3392012-11-12 23:13:54 -0500274enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
Simon Glass2d2af852011-10-24 19:15:32 +0000275{
276 enum fdt_compat_id id;
277
278 /* Search our drivers */
279 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
Mario Six6abfbc82018-01-15 11:07:36 +0100280 if (fdt_node_check_compatible(blob, node,
281 compat_names[id]) == 0)
Simon Glass2d2af852011-10-24 19:15:32 +0000282 return id;
283 return COMPAT_UNKNOWN;
284}
285
Mario Sixbb3e06c2018-01-15 11:07:35 +0100286int fdtdec_next_compatible(const void *blob, int node, enum fdt_compat_id id)
Simon Glass2d2af852011-10-24 19:15:32 +0000287{
288 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
289}
290
Simon Glass2e979b12012-04-02 13:18:42 +0000291int fdtdec_next_compatible_subnode(const void *blob, int node,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100292 enum fdt_compat_id id, int *depthp)
Simon Glass2e979b12012-04-02 13:18:42 +0000293{
294 do {
295 node = fdt_next_node(blob, node, depthp);
296 } while (*depthp > 1);
297
298 /* If this is a direct subnode, and compatible, return it */
299 if (*depthp == 1 && 0 == fdt_node_check_compatible(
300 blob, node, compat_names[id]))
301 return node;
302
303 return -FDT_ERR_NOTFOUND;
304}
305
Mario Sixbb3e06c2018-01-15 11:07:35 +0100306int fdtdec_next_alias(const void *blob, const char *name, enum fdt_compat_id id,
307 int *upto)
Simon Glass2d2af852011-10-24 19:15:32 +0000308{
309#define MAX_STR_LEN 20
310 char str[MAX_STR_LEN + 20];
311 int node, err;
312
313 /* snprintf() is not available */
314 assert(strlen(name) < MAX_STR_LEN);
315 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
Simon Glasse1d15ca2012-10-31 14:02:42 +0000316 node = fdt_path_offset(blob, str);
Simon Glass2d2af852011-10-24 19:15:32 +0000317 if (node < 0)
318 return node;
319 err = fdt_node_check_compatible(blob, node, compat_names[id]);
320 if (err < 0)
321 return err;
Simon Glass65444982012-02-27 10:52:34 +0000322 if (err)
323 return -FDT_ERR_NOTFOUND;
324 (*upto)++;
325 return node;
Simon Glass2d2af852011-10-24 19:15:32 +0000326}
327
Simon Glassb022ead2012-01-17 08:20:50 +0000328int fdtdec_find_aliases_for_id(const void *blob, const char *name,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100329 enum fdt_compat_id id, int *node_list,
330 int maxcount)
Simon Glassb022ead2012-01-17 08:20:50 +0000331{
Simon Glass1f772662012-02-03 15:13:53 +0000332 memset(node_list, '\0', sizeof(*node_list) * maxcount);
333
334 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
335}
336
337/* TODO: Can we tighten this code up a little? */
338int fdtdec_add_aliases_for_id(const void *blob, const char *name,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100339 enum fdt_compat_id id, int *node_list,
340 int maxcount)
Simon Glass1f772662012-02-03 15:13:53 +0000341{
Simon Glassb022ead2012-01-17 08:20:50 +0000342 int name_len = strlen(name);
343 int nodes[maxcount];
344 int num_found = 0;
345 int offset, node;
346 int alias_node;
347 int count;
348 int i, j;
349
350 /* find the alias node if present */
351 alias_node = fdt_path_offset(blob, "/aliases");
352
353 /*
354 * start with nothing, and we can assume that the root node can't
355 * match
356 */
357 memset(nodes, '\0', sizeof(nodes));
358
359 /* First find all the compatible nodes */
360 for (node = count = 0; node >= 0 && count < maxcount;) {
361 node = fdtdec_next_compatible(blob, node, id);
362 if (node >= 0)
363 nodes[count++] = node;
364 }
365 if (node >= 0)
366 debug("%s: warning: maxcount exceeded with alias '%s'\n",
Mario Sixbb3e06c2018-01-15 11:07:35 +0100367 __func__, name);
Simon Glassb022ead2012-01-17 08:20:50 +0000368
369 /* Now find all the aliases */
Simon Glassb022ead2012-01-17 08:20:50 +0000370 for (offset = fdt_first_property_offset(blob, alias_node);
371 offset > 0;
372 offset = fdt_next_property_offset(blob, offset)) {
373 const struct fdt_property *prop;
374 const char *path;
375 int number;
376 int found;
377
378 node = 0;
379 prop = fdt_get_property_by_offset(blob, offset, NULL);
380 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
381 if (prop->len && 0 == strncmp(path, name, name_len))
382 node = fdt_path_offset(blob, prop->data);
383 if (node <= 0)
384 continue;
385
386 /* Get the alias number */
387 number = simple_strtoul(path + name_len, NULL, 10);
388 if (number < 0 || number >= maxcount) {
389 debug("%s: warning: alias '%s' is out of range\n",
Mario Sixbb3e06c2018-01-15 11:07:35 +0100390 __func__, path);
Simon Glassb022ead2012-01-17 08:20:50 +0000391 continue;
392 }
393
394 /* Make sure the node we found is actually in our list! */
395 found = -1;
396 for (j = 0; j < count; j++)
397 if (nodes[j] == node) {
398 found = j;
399 break;
400 }
401
402 if (found == -1) {
403 debug("%s: warning: alias '%s' points to a node "
404 "'%s' that is missing or is not compatible "
405 " with '%s'\n", __func__, path,
406 fdt_get_name(blob, node, NULL),
407 compat_names[id]);
408 continue;
409 }
410
411 /*
412 * Add this node to our list in the right place, and mark
413 * it as done.
414 */
415 if (fdtdec_get_is_enabled(blob, node)) {
Simon Glass1f772662012-02-03 15:13:53 +0000416 if (node_list[number]) {
417 debug("%s: warning: alias '%s' requires that "
418 "a node be placed in the list in a "
419 "position which is already filled by "
420 "node '%s'\n", __func__, path,
421 fdt_get_name(blob, node, NULL));
422 continue;
423 }
Simon Glassb022ead2012-01-17 08:20:50 +0000424 node_list[number] = node;
425 if (number >= num_found)
426 num_found = number + 1;
427 }
Simon Glass1f772662012-02-03 15:13:53 +0000428 nodes[found] = 0;
Simon Glassb022ead2012-01-17 08:20:50 +0000429 }
430
431 /* Add any nodes not mentioned by an alias */
432 for (i = j = 0; i < maxcount; i++) {
433 if (!node_list[i]) {
434 for (; j < maxcount; j++)
435 if (nodes[j] &&
Mario Sixbb3e06c2018-01-15 11:07:35 +0100436 fdtdec_get_is_enabled(blob, nodes[j]))
Simon Glassb022ead2012-01-17 08:20:50 +0000437 break;
438
439 /* Have we run out of nodes to add? */
440 if (j == maxcount)
441 break;
442
443 assert(!node_list[i]);
444 node_list[i] = nodes[j++];
445 if (i >= num_found)
446 num_found = i + 1;
447 }
448 }
449
450 return num_found;
451}
452
Simon Glass9908ad42014-07-23 06:55:09 -0600453int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
454 int *seqp)
455{
456 int base_len = strlen(base);
457 const char *find_name;
458 int find_namelen;
459 int prop_offset;
460 int aliases;
461
462 find_name = fdt_get_name(blob, offset, &find_namelen);
463 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
464
465 aliases = fdt_path_offset(blob, "/aliases");
466 for (prop_offset = fdt_first_property_offset(blob, aliases);
467 prop_offset > 0;
468 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
469 const char *prop;
470 const char *name;
471 const char *slash;
Simon Glass4aaa4602015-06-23 15:39:08 -0600472 int len, val;
Simon Glass9908ad42014-07-23 06:55:09 -0600473
474 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
475 debug(" - %s, %s\n", name, prop);
476 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
477 strncmp(name, base, base_len))
478 continue;
479
480 slash = strrchr(prop, '/');
481 if (strcmp(slash + 1, find_name))
482 continue;
Simon Glass4aaa4602015-06-23 15:39:08 -0600483 val = trailing_strtol(name);
484 if (val != -1) {
485 *seqp = val;
486 debug("Found seq %d\n", *seqp);
487 return 0;
Simon Glass9908ad42014-07-23 06:55:09 -0600488 }
489 }
490
491 debug("Not found\n");
492 return -ENOENT;
493}
494
Michal Simek4b586672019-01-31 16:30:58 +0100495int fdtdec_get_alias_highest_id(const void *blob, const char *base)
496{
497 int base_len = strlen(base);
498 int prop_offset;
499 int aliases;
500 int max = -1;
501
502 debug("Looking for highest alias id for '%s'\n", base);
503
504 aliases = fdt_path_offset(blob, "/aliases");
505 for (prop_offset = fdt_first_property_offset(blob, aliases);
506 prop_offset > 0;
507 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
508 const char *prop;
509 const char *name;
510 int len, val;
511
512 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
513 debug(" - %s, %s\n", name, prop);
514 if (*prop != '/' || prop[len - 1] ||
515 strncmp(name, base, base_len))
516 continue;
517
518 val = trailing_strtol(name);
519 if (val > max) {
520 debug("Found seq %d\n", val);
521 max = val;
522 }
523 }
524
525 return max;
526}
527
Simon Glass088dccb2015-10-17 19:41:14 -0600528const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
Simon Glass1e374fb2014-09-04 16:27:24 -0600529{
Simon Glass1e374fb2014-09-04 16:27:24 -0600530 int chosen_node;
Simon Glass1e374fb2014-09-04 16:27:24 -0600531
532 if (!blob)
Simon Glass088dccb2015-10-17 19:41:14 -0600533 return NULL;
Simon Glass1e374fb2014-09-04 16:27:24 -0600534 chosen_node = fdt_path_offset(blob, "/chosen");
Simon Glass088dccb2015-10-17 19:41:14 -0600535 return fdt_getprop(blob, chosen_node, name, NULL);
536}
537
538int fdtdec_get_chosen_node(const void *blob, const char *name)
539{
540 const char *prop;
541
542 prop = fdtdec_get_chosen_prop(blob, name);
Simon Glass1e374fb2014-09-04 16:27:24 -0600543 if (!prop)
544 return -FDT_ERR_NOTFOUND;
545 return fdt_path_offset(blob, prop);
546}
547
Simon Glass1691f692012-03-28 10:08:24 +0000548int fdtdec_check_fdt(void)
549{
550 /*
551 * We must have an FDT, but we cannot panic() yet since the console
552 * is not ready. So for now, just assert(). Boards which need an early
553 * FDT (prior to console ready) will need to make their own
554 * arrangements and do their own checks.
555 */
556 assert(!fdtdec_prepare_fdt());
557 return 0;
558}
559
Simon Glass2d2af852011-10-24 19:15:32 +0000560/*
561 * This function is a little odd in that it accesses global data. At some
562 * point if the architecture board.c files merge this will make more sense.
563 * Even now, it is common code.
564 */
Simon Glass1691f692012-03-28 10:08:24 +0000565int fdtdec_prepare_fdt(void)
Simon Glass2d2af852011-10-24 19:15:32 +0000566{
Simon Glass71136852013-04-20 08:42:46 +0000567 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
568 fdt_check_header(gd->fdt_blob)) {
Simon Glass509dbf92015-02-27 22:06:32 -0700569#ifdef CONFIG_SPL_BUILD
570 puts("Missing DTB\n");
571#else
572 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 Glass63884ec2015-06-23 15:39:09 -0600573# ifdef DEBUG
574 if (gd->fdt_blob) {
575 printf("fdt_blob=%p\n", gd->fdt_blob);
576 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
577 32, 0);
578 }
579# endif
Simon Glass509dbf92015-02-27 22:06:32 -0700580#endif
Simon Glass1691f692012-03-28 10:08:24 +0000581 return -1;
582 }
Simon Glass2d2af852011-10-24 19:15:32 +0000583 return 0;
584}
Simon Glassc4697362012-02-27 10:52:35 +0000585
586int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
587{
588 const u32 *phandle;
589 int lookup;
590
Simon Glassc8c86dd2012-07-12 05:25:01 +0000591 debug("%s: %s\n", __func__, prop_name);
Simon Glassc4697362012-02-27 10:52:35 +0000592 phandle = fdt_getprop(blob, node, prop_name, NULL);
593 if (!phandle)
594 return -FDT_ERR_NOTFOUND;
595
596 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
597 return lookup;
598}
599
600/**
601 * Look up a property in a node and check that it has a minimum length.
602 *
603 * @param blob FDT blob
604 * @param node node to examine
605 * @param prop_name name of property to find
606 * @param min_len minimum property length in bytes
607 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
608 found, or -FDT_ERR_BADLAYOUT if not enough data
609 * @return pointer to cell, which is only valid if err == 0
610 */
611static const void *get_prop_check_min_len(const void *blob, int node,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100612 const char *prop_name, int min_len,
613 int *err)
Simon Glassc4697362012-02-27 10:52:35 +0000614{
615 const void *cell;
616 int len;
617
618 debug("%s: %s\n", __func__, prop_name);
619 cell = fdt_getprop(blob, node, prop_name, &len);
620 if (!cell)
621 *err = -FDT_ERR_NOTFOUND;
622 else if (len < min_len)
623 *err = -FDT_ERR_BADLAYOUT;
624 else
625 *err = 0;
626 return cell;
627}
628
629int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100630 u32 *array, int count)
Simon Glassc4697362012-02-27 10:52:35 +0000631{
632 const u32 *cell;
Mario Six6abfbc82018-01-15 11:07:36 +0100633 int err = 0;
Simon Glassc4697362012-02-27 10:52:35 +0000634
635 debug("%s: %s\n", __func__, prop_name);
636 cell = get_prop_check_min_len(blob, node, prop_name,
637 sizeof(u32) * count, &err);
638 if (!err) {
Mario Six6abfbc82018-01-15 11:07:36 +0100639 int i;
640
Simon Glassc4697362012-02-27 10:52:35 +0000641 for (i = 0; i < count; i++)
642 array[i] = fdt32_to_cpu(cell[i]);
643 }
644 return err;
645}
646
Simon Glasseda0c3f2014-11-10 18:00:19 -0700647int fdtdec_get_int_array_count(const void *blob, int node,
648 const char *prop_name, u32 *array, int count)
649{
650 const u32 *cell;
651 int len, elems;
652 int i;
653
654 debug("%s: %s\n", __func__, prop_name);
655 cell = fdt_getprop(blob, node, prop_name, &len);
656 if (!cell)
657 return -FDT_ERR_NOTFOUND;
658 elems = len / sizeof(u32);
659 if (count > elems)
660 count = elems;
661 for (i = 0; i < count; i++)
662 array[i] = fdt32_to_cpu(cell[i]);
663
664 return count;
665}
666
Simon Glass744ec232012-04-02 13:18:41 +0000667const u32 *fdtdec_locate_array(const void *blob, int node,
668 const char *prop_name, int count)
669{
670 const u32 *cell;
671 int err;
672
673 cell = get_prop_check_min_len(blob, node, prop_name,
674 sizeof(u32) * count, &err);
675 return err ? NULL : cell;
676}
677
Simon Glassc4697362012-02-27 10:52:35 +0000678int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
679{
680 const s32 *cell;
681 int len;
682
683 debug("%s: %s\n", __func__, prop_name);
684 cell = fdt_getprop(blob, node, prop_name, &len);
685 return cell != NULL;
686}
Simon Glass0d83c4d2012-02-27 10:52:36 +0000687
Simon Glassb491e9c2015-01-05 20:05:26 -0700688int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
689 const char *list_name,
690 const char *cells_name,
691 int cell_count, int index,
692 struct fdtdec_phandle_args *out_args)
693{
694 const __be32 *list, *list_end;
695 int rc = 0, size, cur_index = 0;
696 uint32_t count = 0;
697 int node = -1;
698 int phandle;
699
700 /* Retrieve the phandle list property */
701 list = fdt_getprop(blob, src_node, list_name, &size);
702 if (!list)
703 return -ENOENT;
704 list_end = list + size / sizeof(*list);
705
706 /* Loop over the phandles until all the requested entry is found */
707 while (list < list_end) {
708 rc = -EINVAL;
709 count = 0;
710
711 /*
712 * If phandle is 0, then it is an empty entry with no
713 * arguments. Skip forward to the next entry.
714 */
715 phandle = be32_to_cpup(list++);
716 if (phandle) {
717 /*
718 * Find the provider node and parse the #*-cells
719 * property to determine the argument length.
720 *
721 * This is not needed if the cell count is hard-coded
722 * (i.e. cells_name not set, but cell_count is set),
723 * except when we're going to return the found node
724 * below.
725 */
726 if (cells_name || cur_index == index) {
727 node = fdt_node_offset_by_phandle(blob,
728 phandle);
729 if (!node) {
730 debug("%s: could not find phandle\n",
731 fdt_get_name(blob, src_node,
732 NULL));
733 goto err;
734 }
735 }
736
737 if (cells_name) {
738 count = fdtdec_get_int(blob, node, cells_name,
739 -1);
740 if (count == -1) {
741 debug("%s: could not get %s for %s\n",
742 fdt_get_name(blob, src_node,
743 NULL),
744 cells_name,
745 fdt_get_name(blob, node,
746 NULL));
747 goto err;
748 }
749 } else {
750 count = cell_count;
751 }
752
753 /*
754 * Make sure that the arguments actually fit in the
755 * remaining property data length
756 */
757 if (list + count > list_end) {
758 debug("%s: arguments longer than property\n",
759 fdt_get_name(blob, src_node, NULL));
760 goto err;
761 }
762 }
763
764 /*
765 * All of the error cases above bail out of the loop, so at
766 * this point, the parsing is successful. If the requested
767 * index matches, then fill the out_args structure and return,
768 * or return -ENOENT for an empty entry.
769 */
770 rc = -ENOENT;
771 if (cur_index == index) {
772 if (!phandle)
773 goto err;
774
775 if (out_args) {
776 int i;
777
778 if (count > MAX_PHANDLE_ARGS) {
779 debug("%s: too many arguments %d\n",
780 fdt_get_name(blob, src_node,
781 NULL), count);
782 count = MAX_PHANDLE_ARGS;
783 }
784 out_args->node = node;
785 out_args->args_count = count;
786 for (i = 0; i < count; i++) {
787 out_args->args[i] =
788 be32_to_cpup(list++);
789 }
790 }
791
792 /* Found it! return success */
793 return 0;
794 }
795
796 node = -1;
797 list += count;
798 cur_index++;
799 }
800
801 /*
802 * Result will be one of:
803 * -ENOENT : index is for empty phandle
804 * -EINVAL : parsing error on data
805 * [1..n] : Number of phandle (count mode; when index = -1)
806 */
807 rc = index < 0 ? cur_index : -ENOENT;
808 err:
809 return rc;
810}
811
Peng Fan23dd3a02016-02-01 13:31:15 +0800812int fdtdec_get_child_count(const void *blob, int node)
813{
814 int subnode;
815 int num = 0;
816
Simon Glass499c29e2016-10-02 17:59:29 -0600817 fdt_for_each_subnode(subnode, blob, node)
Peng Fan23dd3a02016-02-01 13:31:15 +0800818 num++;
819
820 return num;
821}
822
Anton Stafff2305ec2012-04-17 09:01:28 +0000823int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100824 u8 *array, int count)
Anton Stafff2305ec2012-04-17 09:01:28 +0000825{
826 const u8 *cell;
827 int err;
828
829 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
830 if (!err)
831 memcpy(array, cell, count);
832 return err;
833}
834
835const u8 *fdtdec_locate_byte_array(const void *blob, int node,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100836 const char *prop_name, int count)
Anton Stafff2305ec2012-04-17 09:01:28 +0000837{
838 const u8 *cell;
839 int err;
840
841 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
842 if (err)
843 return NULL;
844 return cell;
845}
Abhilash Kesavan67217af2012-10-25 16:30:58 +0000846
Abhilash Kesavan67217af2012-10-25 16:30:58 +0000847int fdtdec_get_config_int(const void *blob, const char *prop_name,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100848 int default_val)
Abhilash Kesavan67217af2012-10-25 16:30:58 +0000849{
850 int config_node;
851
852 debug("%s: %s\n", __func__, prop_name);
853 config_node = fdt_path_offset(blob, "/config");
854 if (config_node < 0)
855 return default_val;
856 return fdtdec_get_int(blob, config_node, prop_name, default_val);
857}
Simon Glassb0494472012-10-25 16:30:59 +0000858
Gabe Black3e1c1512012-10-25 16:31:04 +0000859int fdtdec_get_config_bool(const void *blob, const char *prop_name)
860{
861 int config_node;
862 const void *prop;
863
864 debug("%s: %s\n", __func__, prop_name);
865 config_node = fdt_path_offset(blob, "/config");
866 if (config_node < 0)
867 return 0;
868 prop = fdt_get_property(blob, config_node, prop_name, NULL);
869
870 return prop != NULL;
871}
872
Simon Glassb0494472012-10-25 16:30:59 +0000873char *fdtdec_get_config_string(const void *blob, const char *prop_name)
874{
875 const char *nodep;
876 int nodeoffset;
877 int len;
878
879 debug("%s: %s\n", __func__, prop_name);
880 nodeoffset = fdt_path_offset(blob, "/config");
881 if (nodeoffset < 0)
882 return NULL;
883
884 nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
885 if (!nodep)
886 return NULL;
887
888 return (char *)nodep;
889}
Simon Glassf909b9c2012-10-25 16:31:00 +0000890
Simon Glass9ffbe332015-03-05 12:25:14 -0700891u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
Thierry Redinga937b802014-08-26 17:33:53 +0200892{
893 u64 number = 0;
894
895 while (cells--)
896 number = (number << 32) | fdt32_to_cpu(*ptr++);
897
898 return number;
899}
900
901int fdt_get_resource(const void *fdt, int node, const char *property,
902 unsigned int index, struct fdt_resource *res)
903{
904 const fdt32_t *ptr, *end;
905 int na, ns, len, parent;
906 unsigned int i = 0;
907
908 parent = fdt_parent_offset(fdt, node);
909 if (parent < 0)
910 return parent;
911
912 na = fdt_address_cells(fdt, parent);
913 ns = fdt_size_cells(fdt, parent);
914
915 ptr = fdt_getprop(fdt, node, property, &len);
916 if (!ptr)
917 return len;
918
919 end = ptr + len / sizeof(*ptr);
920
921 while (ptr + na + ns <= end) {
922 if (i == index) {
Mario Six6abfbc82018-01-15 11:07:36 +0100923 res->start = fdtdec_get_number(ptr, na);
924 res->end = res->start;
Thierry Redinga937b802014-08-26 17:33:53 +0200925 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
926 return 0;
927 }
928
929 ptr += na + ns;
930 i++;
931 }
932
933 return -FDT_ERR_NOTFOUND;
934}
935
936int fdt_get_named_resource(const void *fdt, int node, const char *property,
937 const char *prop_names, const char *name,
938 struct fdt_resource *res)
939{
940 int index;
941
Simon Glassb0ea7402016-10-02 17:59:28 -0600942 index = fdt_stringlist_search(fdt, node, prop_names, name);
Thierry Redinga937b802014-08-26 17:33:53 +0200943 if (index < 0)
944 return index;
945
946 return fdt_get_resource(fdt, node, property, index, res);
947}
Thierry Reding24856312014-08-26 17:33:54 +0200948
Simon Glassb24e8642015-04-14 21:03:21 -0600949static int decode_timing_property(const void *blob, int node, const char *name,
950 struct timing_entry *result)
951{
952 int length, ret = 0;
953 const u32 *prop;
954
955 prop = fdt_getprop(blob, node, name, &length);
956 if (!prop) {
957 debug("%s: could not find property %s\n",
958 fdt_get_name(blob, node, NULL), name);
959 return length;
960 }
961
962 if (length == sizeof(u32)) {
963 result->typ = fdtdec_get_int(blob, node, name, 0);
964 result->min = result->typ;
965 result->max = result->typ;
966 } else {
967 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
968 }
969
970 return ret;
971}
972
973int fdtdec_decode_display_timing(const void *blob, int parent, int index,
974 struct display_timing *dt)
975{
976 int i, node, timings_node;
977 u32 val = 0;
978 int ret = 0;
979
980 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
981 if (timings_node < 0)
982 return timings_node;
983
984 for (i = 0, node = fdt_first_subnode(blob, timings_node);
985 node > 0 && i != index;
986 node = fdt_next_subnode(blob, node))
987 i++;
988
989 if (node < 0)
990 return node;
991
992 memset(dt, 0, sizeof(*dt));
993
994 ret |= decode_timing_property(blob, node, "hback-porch",
995 &dt->hback_porch);
996 ret |= decode_timing_property(blob, node, "hfront-porch",
997 &dt->hfront_porch);
998 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
999 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
1000 ret |= decode_timing_property(blob, node, "vback-porch",
1001 &dt->vback_porch);
1002 ret |= decode_timing_property(blob, node, "vfront-porch",
1003 &dt->vfront_porch);
1004 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
1005 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
1006 ret |= decode_timing_property(blob, node, "clock-frequency",
1007 &dt->pixelclock);
1008
1009 dt->flags = 0;
1010 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1011 if (val != -1) {
1012 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1013 DISPLAY_FLAGS_VSYNC_LOW;
1014 }
1015 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1016 if (val != -1) {
1017 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1018 DISPLAY_FLAGS_HSYNC_LOW;
1019 }
1020 val = fdtdec_get_int(blob, node, "de-active", -1);
1021 if (val != -1) {
1022 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1023 DISPLAY_FLAGS_DE_LOW;
1024 }
1025 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1026 if (val != -1) {
1027 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1028 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1029 }
1030
1031 if (fdtdec_get_bool(blob, node, "interlaced"))
1032 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1033 if (fdtdec_get_bool(blob, node, "doublescan"))
1034 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1035 if (fdtdec_get_bool(blob, node, "doubleclk"))
1036 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1037
Simon Glass6eb90e12016-05-05 07:28:21 -06001038 return ret;
Simon Glassb24e8642015-04-14 21:03:21 -06001039}
1040
Marek Vasutfa8df032019-03-05 04:25:54 +01001041int fdtdec_setup_mem_size_base_fdt(const void *blob)
Nathan Rossiba97b722016-12-19 00:03:34 +10001042{
1043 int ret, mem;
1044 struct fdt_resource res;
1045
Marek Vasutfa8df032019-03-05 04:25:54 +01001046 mem = fdt_path_offset(blob, "/memory");
Nathan Rossiba97b722016-12-19 00:03:34 +10001047 if (mem < 0) {
1048 debug("%s: Missing /memory node\n", __func__);
1049 return -EINVAL;
1050 }
1051
Marek Vasutfa8df032019-03-05 04:25:54 +01001052 ret = fdt_get_resource(blob, mem, "reg", 0, &res);
Nathan Rossiba97b722016-12-19 00:03:34 +10001053 if (ret != 0) {
1054 debug("%s: Unable to decode first memory bank\n", __func__);
1055 return -EINVAL;
1056 }
1057
1058 gd->ram_size = (phys_size_t)(res.end - res.start + 1);
Siva Durga Prasad Paladugu94a1d522018-07-16 15:56:10 +05301059 gd->ram_base = (unsigned long)res.start;
Simon Glass640b78f2017-05-27 07:38:13 -06001060 debug("%s: Initial DRAM size %llx\n", __func__,
1061 (unsigned long long)gd->ram_size);
Nathan Rossiba97b722016-12-19 00:03:34 +10001062
1063 return 0;
1064}
1065
Marek Vasutfa8df032019-03-05 04:25:54 +01001066int fdtdec_setup_mem_size_base(void)
1067{
1068 return fdtdec_setup_mem_size_base_fdt(gd->fdt_blob);
1069}
1070
Nathan Rossiba97b722016-12-19 00:03:34 +10001071#if defined(CONFIG_NR_DRAM_BANKS)
Jens Wiklandere2da4c92018-07-13 12:12:11 +02001072
Michal Simek0bd065c2018-10-03 15:53:52 +02001073static int get_next_memory_node(const void *blob, int mem)
Jens Wiklandere2da4c92018-07-13 12:12:11 +02001074{
Jens Wiklandere2da4c92018-07-13 12:12:11 +02001075 do {
Marek Vasut7c748422019-03-05 04:25:55 +01001076 mem = fdt_node_offset_by_prop_value(blob, mem,
Michal Simek0bd065c2018-10-03 15:53:52 +02001077 "device_type", "memory", 7);
1078 } while (!fdtdec_get_is_enabled(blob, mem));
Jens Wiklandere2da4c92018-07-13 12:12:11 +02001079
1080 return mem;
1081}
1082
Marek Vasut7c748422019-03-05 04:25:55 +01001083int fdtdec_setup_memory_banksize_fdt(const void *blob)
Nathan Rossiba97b722016-12-19 00:03:34 +10001084{
Michal Simek0bd065c2018-10-03 15:53:52 +02001085 int bank, ret, mem, reg = 0;
1086 struct fdt_resource res;
Nathan Rossiba97b722016-12-19 00:03:34 +10001087
Marek Vasut7c748422019-03-05 04:25:55 +01001088 mem = get_next_memory_node(blob, -1);
Michal Simek0bd065c2018-10-03 15:53:52 +02001089 if (mem < 0) {
1090 debug("%s: Missing /memory node\n", __func__);
1091 return -EINVAL;
1092 }
Nathan Rossiba97b722016-12-19 00:03:34 +10001093
1094 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
Marek Vasut7c748422019-03-05 04:25:55 +01001095 ret = fdt_get_resource(blob, mem, "reg", reg++, &res);
Michal Simek0bd065c2018-10-03 15:53:52 +02001096 if (ret == -FDT_ERR_NOTFOUND) {
Marek Vasut7f0293a2017-11-27 05:32:42 +01001097 reg = 0;
Marek Vasut7c748422019-03-05 04:25:55 +01001098 mem = get_next_memory_node(blob, mem);
Michal Simek0bd065c2018-10-03 15:53:52 +02001099 if (mem == -FDT_ERR_NOTFOUND)
1100 break;
1101
Marek Vasut7c748422019-03-05 04:25:55 +01001102 ret = fdt_get_resource(blob, mem, "reg", reg++, &res);
Michal Simek0bd065c2018-10-03 15:53:52 +02001103 if (ret == -FDT_ERR_NOTFOUND)
1104 break;
1105 }
1106 if (ret != 0) {
1107 return -EINVAL;
Marek Vasut7f0293a2017-11-27 05:32:42 +01001108 }
Nathan Rossiba97b722016-12-19 00:03:34 +10001109
1110 gd->bd->bi_dram[bank].start = (phys_addr_t)res.start;
1111 gd->bd->bi_dram[bank].size =
1112 (phys_size_t)(res.end - res.start + 1);
1113
1114 debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
1115 __func__, bank,
1116 (unsigned long long)gd->bd->bi_dram[bank].start,
1117 (unsigned long long)gd->bd->bi_dram[bank].size);
1118 }
1119
1120 return 0;
1121}
Marek Vasut7c748422019-03-05 04:25:55 +01001122
1123int fdtdec_setup_memory_banksize(void)
1124{
1125 return fdtdec_setup_memory_banksize_fdt(gd->fdt_blob);
1126
1127}
Nathan Rossiba97b722016-12-19 00:03:34 +10001128#endif
1129
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001130#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1131# if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\
1132 CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO)
1133static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1134{
Marek Vasutaeaa29d2019-03-08 16:06:55 +01001135 size_t sz_out = CONFIG_VAL(MULTI_DTB_FIT_UNCOMPRESS_SZ);
Marek Vasut42e5c032019-03-13 21:11:22 +01001136 bool gzip = 0, lzo = 0;
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001137 ulong sz_in = sz_src;
1138 void *dst;
1139 int rc;
1140
1141 if (CONFIG_IS_ENABLED(GZIP))
Marek Vasut42e5c032019-03-13 21:11:22 +01001142 if (gzip_parse_header(src, sz_in) >= 0)
1143 gzip = 1;
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001144 if (CONFIG_IS_ENABLED(LZO))
Marek Vasut42e5c032019-03-13 21:11:22 +01001145 if (!gzip && lzop_is_valid_header(src))
1146 lzo = 1;
1147
1148 if (!gzip && !lzo)
1149 return -EBADMSG;
1150
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001151
1152 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) {
1153 dst = malloc(sz_out);
1154 if (!dst) {
1155 puts("uncompress_blob: Unable to allocate memory\n");
1156 return -ENOMEM;
1157 }
1158 } else {
1159# if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA)
1160 dst = (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR);
1161# else
1162 return -ENOTSUPP;
1163# endif
1164 }
1165
Marek Vasut42e5c032019-03-13 21:11:22 +01001166 if (CONFIG_IS_ENABLED(GZIP) && gzip)
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001167 rc = gunzip(dst, sz_out, (u8 *)src, &sz_in);
Marek Vasut42e5c032019-03-13 21:11:22 +01001168 else if (CONFIG_IS_ENABLED(LZO) && lzo)
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001169 rc = lzop_decompress(src, sz_in, dst, &sz_out);
Marek Vasut42e5c032019-03-13 21:11:22 +01001170 else
1171 hang();
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001172
1173 if (rc < 0) {
1174 /* not a valid compressed blob */
1175 puts("uncompress_blob: Unable to uncompress\n");
1176 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC))
1177 free(dst);
1178 return -EBADMSG;
1179 }
1180 *dstp = dst;
1181 return 0;
1182}
1183# else
1184static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1185{
Marek Vasut5bd49fb2018-10-18 20:37:05 +02001186 *dstp = (void *)src;
1187 return 0;
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001188}
1189# endif
1190#endif
1191
Rob Clark974dcac2018-01-10 11:34:37 +01001192#if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
1193/*
1194 * For CONFIG_OF_SEPARATE, the board may optionally implement this to
1195 * provide and/or fixup the fdt.
1196 */
1197__weak void *board_fdt_blob_setup(void)
1198{
1199 void *fdt_blob = NULL;
1200#ifdef CONFIG_SPL_BUILD
1201 /* FDT is at end of BSS unless it is in a different memory region */
1202 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
1203 fdt_blob = (ulong *)&_image_binary_end;
1204 else
1205 fdt_blob = (ulong *)&__bss_end;
1206#else
1207 /* FDT is at end of image */
1208 fdt_blob = (ulong *)&_end;
1209#endif
1210 return fdt_blob;
1211}
1212#endif
1213
Thierry Reding1bb59a92019-04-15 11:32:13 +02001214int fdtdec_set_ethernet_mac_address(void *fdt, const u8 *mac, size_t size)
1215{
1216 const char *path;
1217 int offset, err;
1218
1219 if (!is_valid_ethaddr(mac))
1220 return -EINVAL;
1221
1222 path = fdt_get_alias(fdt, "ethernet");
1223 if (!path)
1224 return 0;
1225
1226 debug("ethernet alias found: %s\n", path);
1227
1228 offset = fdt_path_offset(fdt, path);
1229 if (offset < 0) {
1230 debug("ethernet alias points to absent node %s\n", path);
1231 return -ENOENT;
1232 }
1233
1234 err = fdt_setprop_inplace(fdt, offset, "local-mac-address", mac, size);
1235 if (err < 0)
1236 return err;
1237
1238 debug("MAC address: %pM\n", mac);
1239
1240 return 0;
1241}
1242
Thierry Redinge8dfad42019-03-21 19:10:02 +01001243static int fdtdec_init_reserved_memory(void *blob)
1244{
1245 int na, ns, node, err;
1246 fdt32_t value;
1247
1248 /* inherit #address-cells and #size-cells from the root node */
1249 na = fdt_address_cells(blob, 0);
1250 ns = fdt_size_cells(blob, 0);
1251
1252 node = fdt_add_subnode(blob, 0, "reserved-memory");
1253 if (node < 0)
1254 return node;
1255
1256 err = fdt_setprop(blob, node, "ranges", NULL, 0);
1257 if (err < 0)
1258 return err;
1259
1260 value = cpu_to_fdt32(ns);
1261
1262 err = fdt_setprop(blob, node, "#size-cells", &value, sizeof(value));
1263 if (err < 0)
1264 return err;
1265
1266 value = cpu_to_fdt32(na);
1267
1268 err = fdt_setprop(blob, node, "#address-cells", &value, sizeof(value));
1269 if (err < 0)
1270 return err;
1271
1272 return node;
1273}
1274
1275int fdtdec_add_reserved_memory(void *blob, const char *basename,
1276 const struct fdt_memory *carveout,
1277 uint32_t *phandlep)
1278{
1279 fdt32_t cells[4] = {}, *ptr = cells;
1280 uint32_t upper, lower, phandle;
1281 int parent, node, na, ns, err;
Thierry Reding26130012019-04-15 10:08:21 +02001282 fdt_size_t size;
Thierry Redinge8dfad42019-03-21 19:10:02 +01001283 char name[64];
1284
1285 /* create an empty /reserved-memory node if one doesn't exist */
1286 parent = fdt_path_offset(blob, "/reserved-memory");
1287 if (parent < 0) {
1288 parent = fdtdec_init_reserved_memory(blob);
1289 if (parent < 0)
1290 return parent;
1291 }
1292
1293 /* only 1 or 2 #address-cells and #size-cells are supported */
1294 na = fdt_address_cells(blob, parent);
1295 if (na < 1 || na > 2)
1296 return -FDT_ERR_BADNCELLS;
1297
1298 ns = fdt_size_cells(blob, parent);
1299 if (ns < 1 || ns > 2)
1300 return -FDT_ERR_BADNCELLS;
1301
1302 /* find a matching node and return the phandle to that */
1303 fdt_for_each_subnode(node, blob, parent) {
1304 const char *name = fdt_get_name(blob, node, NULL);
1305 phys_addr_t addr, size;
1306
1307 addr = fdtdec_get_addr_size(blob, node, "reg", &size);
1308 if (addr == FDT_ADDR_T_NONE) {
1309 debug("failed to read address/size for %s\n", name);
1310 continue;
1311 }
1312
1313 if (addr == carveout->start && (addr + size) == carveout->end) {
Heiko Stuebner49723ac2019-10-23 16:46:38 +02001314 if (phandlep)
1315 *phandlep = fdt_get_phandle(blob, node);
Thierry Redinge8dfad42019-03-21 19:10:02 +01001316 return 0;
1317 }
1318 }
1319
1320 /*
1321 * Unpack the start address and generate the name of the new node
1322 * base on the basename and the unit-address.
1323 */
Thierry Reding26130012019-04-15 10:08:21 +02001324 upper = upper_32_bits(carveout->start);
1325 lower = lower_32_bits(carveout->start);
Thierry Redinge8dfad42019-03-21 19:10:02 +01001326
1327 if (na > 1 && upper > 0)
1328 snprintf(name, sizeof(name), "%s@%x,%x", basename, upper,
1329 lower);
1330 else {
1331 if (upper > 0) {
1332 debug("address %08x:%08x exceeds addressable space\n",
1333 upper, lower);
1334 return -FDT_ERR_BADVALUE;
1335 }
1336
1337 snprintf(name, sizeof(name), "%s@%x", basename, lower);
1338 }
1339
1340 node = fdt_add_subnode(blob, parent, name);
1341 if (node < 0)
1342 return node;
1343
Heiko Stuebner754302f2019-10-23 16:46:39 +02001344 if (phandlep) {
1345 err = fdt_generate_phandle(blob, &phandle);
1346 if (err < 0)
1347 return err;
Thierry Redinge8dfad42019-03-21 19:10:02 +01001348
Heiko Stuebner754302f2019-10-23 16:46:39 +02001349 err = fdtdec_set_phandle(blob, node, phandle);
1350 if (err < 0)
1351 return err;
1352 }
Thierry Redinge8dfad42019-03-21 19:10:02 +01001353
1354 /* store one or two address cells */
1355 if (na > 1)
1356 *ptr++ = cpu_to_fdt32(upper);
1357
1358 *ptr++ = cpu_to_fdt32(lower);
1359
1360 /* store one or two size cells */
Thierry Reding26130012019-04-15 10:08:21 +02001361 size = carveout->end - carveout->start + 1;
1362 upper = upper_32_bits(size);
1363 lower = lower_32_bits(size);
Thierry Redinge8dfad42019-03-21 19:10:02 +01001364
1365 if (ns > 1)
1366 *ptr++ = cpu_to_fdt32(upper);
1367
1368 *ptr++ = cpu_to_fdt32(lower);
1369
1370 err = fdt_setprop(blob, node, "reg", cells, (na + ns) * sizeof(*cells));
1371 if (err < 0)
1372 return err;
1373
1374 /* return the phandle for the new node for the caller to use */
1375 if (phandlep)
1376 *phandlep = phandle;
1377
1378 return 0;
1379}
1380
Thierry Redinge629b0d2019-03-21 19:10:03 +01001381int fdtdec_get_carveout(const void *blob, const char *node, const char *name,
1382 unsigned int index, struct fdt_memory *carveout)
1383{
1384 const fdt32_t *prop;
1385 uint32_t phandle;
1386 int offset, len;
1387 fdt_size_t size;
1388
1389 offset = fdt_path_offset(blob, node);
1390 if (offset < 0)
1391 return offset;
1392
1393 prop = fdt_getprop(blob, offset, name, &len);
1394 if (!prop) {
1395 debug("failed to get %s for %s\n", name, node);
1396 return -FDT_ERR_NOTFOUND;
1397 }
1398
1399 if ((len % sizeof(phandle)) != 0) {
1400 debug("invalid phandle property\n");
1401 return -FDT_ERR_BADPHANDLE;
1402 }
1403
1404 if (len < (sizeof(phandle) * (index + 1))) {
1405 debug("invalid phandle index\n");
1406 return -FDT_ERR_BADPHANDLE;
1407 }
1408
1409 phandle = fdt32_to_cpu(prop[index]);
1410
1411 offset = fdt_node_offset_by_phandle(blob, phandle);
1412 if (offset < 0) {
1413 debug("failed to find node for phandle %u\n", phandle);
1414 return offset;
1415 }
1416
1417 carveout->start = fdtdec_get_addr_size_auto_noparent(blob, offset,
1418 "reg", 0, &size,
1419 true);
1420 if (carveout->start == FDT_ADDR_T_NONE) {
1421 debug("failed to read address/size from \"reg\" property\n");
1422 return -FDT_ERR_NOTFOUND;
1423 }
1424
1425 carveout->end = carveout->start + size - 1;
1426
1427 return 0;
1428}
1429
1430int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name,
1431 unsigned int index, const char *name,
1432 const struct fdt_memory *carveout)
1433{
1434 uint32_t phandle;
1435 int err, offset;
1436 fdt32_t value;
1437
1438 /* XXX implement support for multiple phandles */
1439 if (index > 0) {
1440 debug("invalid index %u\n", index);
1441 return -FDT_ERR_BADOFFSET;
1442 }
1443
1444 err = fdtdec_add_reserved_memory(blob, name, carveout, &phandle);
1445 if (err < 0) {
1446 debug("failed to add reserved memory: %d\n", err);
1447 return err;
1448 }
1449
1450 offset = fdt_path_offset(blob, node);
1451 if (offset < 0) {
1452 debug("failed to find offset for node %s: %d\n", node, offset);
1453 return offset;
1454 }
1455
1456 value = cpu_to_fdt32(phandle);
1457
1458 err = fdt_setprop(blob, offset, prop_name, &value, sizeof(value));
1459 if (err < 0) {
1460 debug("failed to set %s property for node %s: %d\n", prop_name,
1461 node, err);
1462 return err;
1463 }
1464
1465 return 0;
1466}
1467
Simon Glassa0877672015-02-27 22:06:35 -07001468int fdtdec_setup(void)
Simon Glass26b78b22015-02-27 22:06:34 -07001469{
Masahiro Yamada366b24f2015-08-12 07:31:55 +09001470#if CONFIG_IS_ENABLED(OF_CONTROL)
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001471# if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1472 void *fdt_blob;
1473# endif
Simon Glass26b78b22015-02-27 22:06:34 -07001474# ifdef CONFIG_OF_EMBED
1475 /* Get a pointer to the FDT */
Goldschmidt Simon5e7a1c22017-11-21 12:29:56 +00001476# ifdef CONFIG_SPL_BUILD
1477 gd->fdt_blob = __dtb_dt_spl_begin;
1478# else
Simon Glass26b78b22015-02-27 22:06:34 -07001479 gd->fdt_blob = __dtb_dt_begin;
Goldschmidt Simon5e7a1c22017-11-21 12:29:56 +00001480# endif
Rob Clark974dcac2018-01-10 11:34:37 +01001481# elif defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
Alex Deymo5b661ec2017-04-02 01:25:20 -07001482 /* Allow the board to override the fdt address. */
1483 gd->fdt_blob = board_fdt_blob_setup();
Simon Glass26b78b22015-02-27 22:06:34 -07001484# elif defined(CONFIG_OF_HOSTFILE)
1485 if (sandbox_read_fdt_from_file()) {
1486 puts("Failed to read control FDT\n");
1487 return -1;
1488 }
Lukas Auer3f47b632019-08-21 21:14:40 +02001489# elif defined(CONFIG_OF_PRIOR_STAGE)
1490 gd->fdt_blob = (void *)prior_stage_fdt_address;
Simon Glass26b78b22015-02-27 22:06:34 -07001491# endif
1492# ifndef CONFIG_SPL_BUILD
1493 /* Allow the early environment to override the fdt address */
Heinrich Schuchardt370a1762018-11-18 17:58:50 +01001494 gd->fdt_blob = map_sysmem
1495 (env_get_ulong("fdtcontroladdr", 16,
1496 (unsigned long)map_to_sysmem(gd->fdt_blob)), 0);
Simon Glass26b78b22015-02-27 22:06:34 -07001497# endif
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001498
1499# if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1500 /*
1501 * Try and uncompress the blob.
1502 * Unfortunately there is no way to know how big the input blob really
1503 * is. So let us set the maximum input size arbitrarily high. 16MB
1504 * ought to be more than enough for packed DTBs.
1505 */
1506 if (uncompress_blob(gd->fdt_blob, 0x1000000, &fdt_blob) == 0)
1507 gd->fdt_blob = fdt_blob;
1508
1509 /*
1510 * Check if blob is a FIT images containings DTBs.
1511 * If so, pick the most relevant
1512 */
1513 fdt_blob = locate_dtb_in_fit(gd->fdt_blob);
Jean-Jacques Hiblot7c530e32018-12-07 14:50:52 +01001514 if (fdt_blob) {
1515 gd->multi_dtb_fit = gd->fdt_blob;
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001516 gd->fdt_blob = fdt_blob;
Jean-Jacques Hiblot7c530e32018-12-07 14:50:52 +01001517 }
1518
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001519# endif
Heiko Schocherd7b42322014-03-03 12:19:30 +01001520#endif
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001521
Simon Glassa0877672015-02-27 22:06:35 -07001522 return fdtdec_prepare_fdt();
Simon Glass26b78b22015-02-27 22:06:34 -07001523}
1524
Jean-Jacques Hiblot7c530e32018-12-07 14:50:52 +01001525#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1526int fdtdec_resetup(int *rescan)
1527{
1528 void *fdt_blob;
1529
1530 /*
1531 * If the current DTB is part of a compressed FIT image,
1532 * try to locate the best match from the uncompressed
1533 * FIT image stillpresent there. Save the time and space
1534 * required to uncompress it again.
1535 */
1536 if (gd->multi_dtb_fit) {
1537 fdt_blob = locate_dtb_in_fit(gd->multi_dtb_fit);
1538
1539 if (fdt_blob == gd->fdt_blob) {
1540 /*
1541 * The best match did not change. no need to tear down
1542 * the DM and rescan the fdt.
1543 */
1544 *rescan = 0;
1545 return 0;
1546 }
1547
1548 *rescan = 1;
1549 gd->fdt_blob = fdt_blob;
1550 return fdtdec_prepare_fdt();
1551 }
1552
1553 /*
1554 * If multi_dtb_fit is NULL, it means that blob appended to u-boot is
1555 * not a FIT image containings DTB, but a single DTB. There is no need
1556 * to teard down DM and rescan the DT in this case.
1557 */
1558 *rescan = 0;
1559 return 0;
1560}
1561#endif
1562
Michael Prattfa28d142018-06-11 13:07:09 -06001563#ifdef CONFIG_NR_DRAM_BANKS
1564int fdtdec_decode_ram_size(const void *blob, const char *area, int board_id,
1565 phys_addr_t *basep, phys_size_t *sizep, bd_t *bd)
1566{
1567 int addr_cells, size_cells;
1568 const u32 *cell, *end;
1569 u64 total_size, size, addr;
1570 int node, child;
1571 bool auto_size;
1572 int bank;
1573 int len;
1574
1575 debug("%s: board_id=%d\n", __func__, board_id);
1576 if (!area)
1577 area = "/memory";
1578 node = fdt_path_offset(blob, area);
1579 if (node < 0) {
1580 debug("No %s node found\n", area);
1581 return -ENOENT;
1582 }
1583
1584 cell = fdt_getprop(blob, node, "reg", &len);
1585 if (!cell) {
1586 debug("No reg property found\n");
1587 return -ENOENT;
1588 }
1589
1590 addr_cells = fdt_address_cells(blob, node);
1591 size_cells = fdt_size_cells(blob, node);
1592
1593 /* Check the board id and mask */
1594 for (child = fdt_first_subnode(blob, node);
1595 child >= 0;
1596 child = fdt_next_subnode(blob, child)) {
1597 int match_mask, match_value;
1598
1599 match_mask = fdtdec_get_int(blob, child, "match-mask", -1);
1600 match_value = fdtdec_get_int(blob, child, "match-value", -1);
1601
1602 if (match_value >= 0 &&
1603 ((board_id & match_mask) == match_value)) {
1604 /* Found matching mask */
1605 debug("Found matching mask %d\n", match_mask);
1606 node = child;
1607 cell = fdt_getprop(blob, node, "reg", &len);
1608 if (!cell) {
1609 debug("No memory-banks property found\n");
1610 return -EINVAL;
1611 }
1612 break;
1613 }
1614 }
1615 /* Note: if no matching subnode was found we use the parent node */
1616
1617 if (bd) {
1618 memset(bd->bi_dram, '\0', sizeof(bd->bi_dram[0]) *
1619 CONFIG_NR_DRAM_BANKS);
1620 }
1621
1622 auto_size = fdtdec_get_bool(blob, node, "auto-size");
1623
1624 total_size = 0;
1625 end = cell + len / 4 - addr_cells - size_cells;
1626 debug("cell at %p, end %p\n", cell, end);
1627 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
1628 if (cell > end)
1629 break;
1630 addr = 0;
1631 if (addr_cells == 2)
1632 addr += (u64)fdt32_to_cpu(*cell++) << 32UL;
1633 addr += fdt32_to_cpu(*cell++);
1634 if (bd)
1635 bd->bi_dram[bank].start = addr;
1636 if (basep && !bank)
1637 *basep = (phys_addr_t)addr;
1638
1639 size = 0;
1640 if (size_cells == 2)
1641 size += (u64)fdt32_to_cpu(*cell++) << 32UL;
1642 size += fdt32_to_cpu(*cell++);
1643
1644 if (auto_size) {
1645 u64 new_size;
1646
Masahiro Yamadac7570a32018-08-06 20:47:40 +09001647 debug("Auto-sizing %llx, size %llx: ", addr, size);
Michael Prattfa28d142018-06-11 13:07:09 -06001648 new_size = get_ram_size((long *)(uintptr_t)addr, size);
1649 if (new_size == size) {
1650 debug("OK\n");
1651 } else {
Masahiro Yamadac7570a32018-08-06 20:47:40 +09001652 debug("sized to %llx\n", new_size);
Michael Prattfa28d142018-06-11 13:07:09 -06001653 size = new_size;
1654 }
1655 }
1656
1657 if (bd)
1658 bd->bi_dram[bank].size = size;
1659 total_size += size;
1660 }
1661
Masahiro Yamadac7570a32018-08-06 20:47:40 +09001662 debug("Memory size %llu\n", total_size);
Michael Prattfa28d142018-06-11 13:07:09 -06001663 if (sizep)
1664 *sizep = (phys_size_t)total_size;
1665
1666 return 0;
1667}
1668#endif /* CONFIG_NR_DRAM_BANKS */
1669
Simon Glass26b78b22015-02-27 22:06:34 -07001670#endif /* !USE_HOSTCC */