blob: 96b6b71a606fe117ab98882c2d6d86069b44135d [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 Glass1ab16922022-07-31 12:28:48 -06009#include <display_options.h>
Simon Glassf1037ad2015-11-29 13:17:54 -070010#include <dm.h>
Simon Glassf11478f2019-12-28 10:45:07 -070011#include <hang.h>
Simon Glass8e16b1e2019-12-28 10:45:05 -070012#include <init.h>
Simon Glass0f2af882020-05-10 11:40:05 -060013#include <log.h>
Simon Glass9bc15642020-02-03 07:36:16 -070014#include <malloc.h>
Simon Glass274e0b02020-05-10 11:39:56 -060015#include <net.h>
Jean-Jacques Hiblot5d96cab2017-09-15 12:57:31 +020016#include <dm/of_extra.h>
Simon Glass6eaea252019-08-01 09:46:48 -060017#include <env.h>
Simon Glass9908ad42014-07-23 06:55:09 -060018#include <errno.h>
Simon Glass2d2af852011-10-24 19:15:32 +000019#include <fdtdec.h>
Jean-Jacques Hiblot5d96cab2017-09-15 12:57:31 +020020#include <fdt_support.h>
Simon Glass1a974af2019-08-01 09:46:36 -060021#include <gzip.h>
Heinrich Schuchardt370a1762018-11-18 17:58:50 +010022#include <mapmem.h>
Masahiro Yamada75f82d02018-03-05 01:20:11 +090023#include <linux/libfdt.h>
Jean-Jacques Hiblot5d96cab2017-09-15 12:57:31 +020024#include <serial.h>
Simon Glass3ba929a2020-10-30 21:38:53 -060025#include <asm/global_data.h>
Simon Glass26b78b22015-02-27 22:06:34 -070026#include <asm/sections.h>
Simon Glass9908ad42014-07-23 06:55:09 -060027#include <linux/ctype.h>
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +020028#include <linux/lzo.h>
Michal Simek6dd9cfd2020-07-10 13:34:44 +020029#include <linux/ioport.h>
Simon Glass2d2af852011-10-24 19:15:32 +000030
31DECLARE_GLOBAL_DATA_PTR;
32
33/*
34 * Here are the type we know about. One day we might allow drivers to
35 * register. For now we just put them here. The COMPAT macro allows us to
36 * turn this into a sparse list later, and keeps the ID with the name.
Simon Glass7c380302016-06-19 17:33:13 -060037 *
38 * NOTE: This list is basically a TODO list for things that need to be
39 * converted to driver model. So don't add new things here unless there is a
40 * good reason why driver-model conversion is infeasible. Examples include
41 * things which are used before driver model is available.
Simon Glass2d2af852011-10-24 19:15:32 +000042 */
43#define COMPAT(id, name) name
44static const char * const compat_names[COMPAT_COUNT] = {
Simon Glass65444982012-02-27 10:52:34 +000045 COMPAT(UNKNOWN, "<none>"),
Jimmy Zhang5983ef82012-04-02 13:18:52 +000046 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
47 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
Jim Lin5d309e62012-07-29 20:53:29 +000048 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
Thierry Redingf202e022014-12-09 22:25:09 -070049 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
Tom Warrenab0cc6b2015-03-04 16:36:00 -070050 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
Rajeshwari Shinded6e9f442013-01-07 23:35:05 +000051 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
Vivek Gautamf8745232013-09-14 14:02:48 +053052 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
Akshay Saraswataa773182013-02-25 01:13:01 +000053 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
Piotr Wilczek24e368a2014-03-07 14:59:39 +010054 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
Jaehoon Chunge3fb6fa2014-05-16 13:59:51 +090055 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
Neil Armstrongf6625b42019-02-10 10:16:21 +000056 COMPAT(GENERIC_SPI_FLASH, "jedec,spi-nor"),
Ajay Kumare24c5022014-09-05 16:53:33 +053057 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
Simon Glassf79d5382014-11-12 22:42:21 -070058 COMPAT(INTEL_MICROCODE, "intel,microcode"),
Bin Meng2bfd2642015-02-05 23:42:26 +080059 COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
Marek Vasutf3f8fe22015-07-25 19:33:56 +020060 COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
Marek Vasut17497232015-07-25 10:48:14 +020061 COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"),
Marek Vasutf26c1ae2015-12-05 19:28:44 +010062 COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"),
Simon Glass6f70c112016-06-19 17:33:14 -060063 COMPAT(INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"),
64 COMPAT(INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"),
65 COMPAT(INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"),
Boris Brezillon57f20382016-06-15 21:09:23 +020066 COMPAT(COMPAT_SUNXI_NAND, "allwinner,sun4i-a10-nand"),
Ley Foon Tanb25ae722017-04-05 17:32:47 +080067 COMPAT(ALTERA_SOCFPGA_CLK, "altr,clk-mgr"),
68 COMPAT(ALTERA_SOCFPGA_PINCTRL_SINGLE, "pinctrl-single"),
69 COMPAT(ALTERA_SOCFPGA_H2F_BRG, "altr,socfpga-hps2fpga-bridge"),
70 COMPAT(ALTERA_SOCFPGA_LWH2F_BRG, "altr,socfpga-lwhps2fpga-bridge"),
71 COMPAT(ALTERA_SOCFPGA_F2H_BRG, "altr,socfpga-fpga2hps-bridge"),
72 COMPAT(ALTERA_SOCFPGA_F2SDR0, "altr,socfpga-fpga2sdram0-bridge"),
73 COMPAT(ALTERA_SOCFPGA_F2SDR1, "altr,socfpga-fpga2sdram1-bridge"),
74 COMPAT(ALTERA_SOCFPGA_F2SDR2, "altr,socfpga-fpga2sdram2-bridge"),
Tien Fong Cheebbfa5eb2017-09-25 16:40:03 +080075 COMPAT(ALTERA_SOCFPGA_FPGA0, "altr,socfpga-a10-fpga-mgr"),
76 COMPAT(ALTERA_SOCFPGA_NOC, "altr,socfpga-a10-noc"),
Marek Vasutee4e36b2018-05-12 11:56:10 +020077 COMPAT(ALTERA_SOCFPGA_CLK_INIT, "altr,socfpga-a10-clk-init")
Simon Glass2d2af852011-10-24 19:15:32 +000078};
79
Simon Glass8f9ce7e2021-12-16 20:59:34 -070080static const char *const fdt_src_name[] = {
81 [FDTSRC_SEPARATE] = "separate",
82 [FDTSRC_FIT] = "fit",
83 [FDTSRC_BOARD] = "board",
84 [FDTSRC_EMBED] = "embed",
85 [FDTSRC_ENV] = "env",
86};
87
88const char *fdtdec_get_srcname(void)
89{
90 return fdt_src_name[gd->fdt_src];
91}
92
Simon Glassb022ead2012-01-17 08:20:50 +000093const char *fdtdec_get_compatible(enum fdt_compat_id id)
94{
95 /* We allow reading of the 'unknown' ID for testing purposes */
96 assert(id >= 0 && id < COMPAT_COUNT);
97 return compat_names[id];
98}
99
Stephen Warren6dfe6182015-08-06 15:31:02 -0600100fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100101 const char *prop_name, int index, int na,
102 int ns, fdt_size_t *sizep,
103 bool translate)
Simon Glass2d2af852011-10-24 19:15:32 +0000104{
Stephen Warren6dfe6182015-08-06 15:31:02 -0600105 const fdt32_t *prop, *prop_end;
106 const fdt32_t *prop_addr, *prop_size, *prop_after_size;
Simon Glass04c50d12015-08-02 18:13:50 -0600107 int len;
Stephen Warren6dfe6182015-08-06 15:31:02 -0600108 fdt_addr_t addr;
Simon Glass2d2af852011-10-24 19:15:32 +0000109
Simon Glassc8c86dd2012-07-12 05:25:01 +0000110 debug("%s: %s: ", __func__, prop_name);
Stephen Warren6dfe6182015-08-06 15:31:02 -0600111
Stephen Warren6dfe6182015-08-06 15:31:02 -0600112 prop = fdt_getprop(blob, node, prop_name, &len);
113 if (!prop) {
114 debug("(not found)\n");
115 return FDT_ADDR_T_NONE;
116 }
117 prop_end = prop + (len / sizeof(*prop));
Simon Glassc8c86dd2012-07-12 05:25:01 +0000118
Stephen Warren6dfe6182015-08-06 15:31:02 -0600119 prop_addr = prop + (index * (na + ns));
120 prop_size = prop_addr + na;
121 prop_after_size = prop_size + ns;
122 if (prop_after_size > prop_end) {
123 debug("(not enough data: expected >= %d cells, got %d cells)\n",
124 (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
125 return FDT_ADDR_T_NONE;
Simon Glassc8c86dd2012-07-12 05:25:01 +0000126 }
Stephen Warren6dfe6182015-08-06 15:31:02 -0600127
Vignesh R621cc092017-03-20 10:04:38 +0530128#if CONFIG_IS_ENABLED(OF_TRANSLATE)
Stephen Warren7d30e102016-08-05 09:47:51 -0600129 if (translate)
130 addr = fdt_translate_address(blob, node, prop_addr);
131 else
132#endif
133 addr = fdtdec_get_number(prop_addr, na);
Stephen Warren6dfe6182015-08-06 15:31:02 -0600134
135 if (sizep) {
136 *sizep = fdtdec_get_number(prop_size, ns);
Simon Glass0b14dc72016-02-29 15:25:37 -0700137 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
138 (unsigned long long)*sizep);
Stephen Warren6dfe6182015-08-06 15:31:02 -0600139 } else {
Simon Glass0b14dc72016-02-29 15:25:37 -0700140 debug("addr=%08llx\n", (unsigned long long)addr);
Stephen Warren6dfe6182015-08-06 15:31:02 -0600141 }
142
143 return addr;
144}
145
146fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100147 int node, const char *prop_name,
148 int index, fdt_size_t *sizep,
149 bool translate)
Stephen Warren6dfe6182015-08-06 15:31:02 -0600150{
151 int na, ns;
152
153 debug("%s: ", __func__);
154
155 na = fdt_address_cells(blob, parent);
156 if (na < 1) {
157 debug("(bad #address-cells)\n");
158 return FDT_ADDR_T_NONE;
159 }
160
161 ns = fdt_size_cells(blob, parent);
Przemyslaw Marczak7b42f4d2015-09-30 13:14:50 +0200162 if (ns < 0) {
Stephen Warren6dfe6182015-08-06 15:31:02 -0600163 debug("(bad #size-cells)\n");
164 return FDT_ADDR_T_NONE;
165 }
166
167 debug("na=%d, ns=%d, ", na, ns);
168
169 return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
Stephen Warren7d30e102016-08-05 09:47:51 -0600170 ns, sizep, translate);
Stephen Warren6dfe6182015-08-06 15:31:02 -0600171}
172
173fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100174 const char *prop_name, int index,
175 fdt_size_t *sizep,
176 bool translate)
Stephen Warren6dfe6182015-08-06 15:31:02 -0600177{
178 int parent;
179
180 debug("%s: ", __func__);
181
182 parent = fdt_parent_offset(blob, node);
183 if (parent < 0) {
184 debug("(no parent found)\n");
185 return FDT_ADDR_T_NONE;
186 }
187
188 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
Stephen Warren7d30e102016-08-05 09:47:51 -0600189 index, sizep, translate);
Stephen Warren6dfe6182015-08-06 15:31:02 -0600190}
191
192fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100193 const char *prop_name, fdt_size_t *sizep)
Stephen Warren6dfe6182015-08-06 15:31:02 -0600194{
Stephen Warrenfda59162015-09-25 10:11:41 -0600195 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
196
Stephen Warren6dfe6182015-08-06 15:31:02 -0600197 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
198 sizeof(fdt_addr_t) / sizeof(fdt32_t),
Stephen Warren7d30e102016-08-05 09:47:51 -0600199 ns, sizep, false);
Simon Glass2d2af852011-10-24 19:15:32 +0000200}
201
Mario Sixbb3e06c2018-01-15 11:07:35 +0100202fdt_addr_t fdtdec_get_addr(const void *blob, int node, const char *prop_name)
Simon Glassf4299552013-03-19 04:58:51 +0000203{
204 return fdtdec_get_addr_size(blob, node, prop_name, NULL);
205}
206
Bin Meng779847e2014-12-31 16:05:11 +0800207int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
208{
209 const char *list, *end;
210 int len;
211
212 list = fdt_getprop(blob, node, "compatible", &len);
213 if (!list)
214 return -ENOENT;
215
216 end = list + len;
217 while (list < end) {
Bin Meng779847e2014-12-31 16:05:11 +0800218 len = strlen(list);
219 if (len >= strlen("pciVVVV,DDDD")) {
Mario Six6abfbc82018-01-15 11:07:36 +0100220 char *s = strstr(list, "pci");
Bin Meng779847e2014-12-31 16:05:11 +0800221
222 /*
223 * check if the string is something like pciVVVV,DDDD.RR
224 * or just pciVVVV,DDDD
225 */
226 if (s && s[7] == ',' &&
227 (s[12] == '.' || s[12] == 0)) {
228 s += 3;
229 *vendor = simple_strtol(s, NULL, 16);
230
231 s += 5;
232 *device = simple_strtol(s, NULL, 16);
233
234 return 0;
235 }
Bin Meng779847e2014-12-31 16:05:11 +0800236 }
Bin Menga2822b82015-08-20 06:40:25 -0700237 list += (len + 1);
Bin Meng779847e2014-12-31 16:05:11 +0800238 }
239
240 return -ENOENT;
241}
242
Simon Glassc92aac12020-01-27 08:49:38 -0700243int fdtdec_get_pci_bar32(const struct udevice *dev, struct fdt_pci_addr *addr,
Simon Glassf1037ad2015-11-29 13:17:54 -0700244 u32 *bar)
Bin Meng779847e2014-12-31 16:05:11 +0800245{
Bin Meng779847e2014-12-31 16:05:11 +0800246 int barnum;
Bin Meng779847e2014-12-31 16:05:11 +0800247
248 /* extract the bar number from fdt_pci_addr */
249 barnum = addr->phys_hi & 0xff;
Mario Six6abfbc82018-01-15 11:07:36 +0100250 if (barnum < PCI_BASE_ADDRESS_0 || barnum > PCI_CARDBUS_CIS)
Bin Meng779847e2014-12-31 16:05:11 +0800251 return -EINVAL;
252
253 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
Simon Glassfde8b762021-08-01 18:54:18 -0600254
Simon Glassf1037ad2015-11-29 13:17:54 -0700255 *bar = dm_pci_read_bar32(dev, barnum);
Bin Meng779847e2014-12-31 16:05:11 +0800256
257 return 0;
258}
Suneel Garapati78d0bea2019-10-19 15:19:35 -0700259
260int fdtdec_get_pci_bus_range(const void *blob, int node,
261 struct fdt_resource *res)
262{
263 const u32 *values;
264 int len;
265
266 values = fdt_getprop(blob, node, "bus-range", &len);
267 if (!values || len < sizeof(*values) * 2)
268 return -EINVAL;
269
270 res->start = fdt32_to_cpu(*values++);
271 res->end = fdt32_to_cpu(*values);
272
273 return 0;
274}
Bin Meng779847e2014-12-31 16:05:11 +0800275
Che-Liang Chioud81d0172012-10-25 16:31:05 +0000276uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100277 uint64_t default_val)
Che-Liang Chioud81d0172012-10-25 16:31:05 +0000278{
Jean-Jacques Hiblot487f9172019-10-22 10:05:22 +0200279 const unaligned_fdt64_t *cell64;
Che-Liang Chioud81d0172012-10-25 16:31:05 +0000280 int length;
281
282 cell64 = fdt_getprop(blob, node, prop_name, &length);
283 if (!cell64 || length < sizeof(*cell64))
284 return default_val;
285
286 return fdt64_to_cpu(*cell64);
287}
288
Simon Glass65444982012-02-27 10:52:34 +0000289int fdtdec_get_is_enabled(const void *blob, int node)
Simon Glass2d2af852011-10-24 19:15:32 +0000290{
291 const char *cell;
292
Simon Glass65444982012-02-27 10:52:34 +0000293 /*
294 * It should say "okay", so only allow that. Some fdts use "ok" but
295 * this is a bug. Please fix your device tree source file. See here
296 * for discussion:
297 *
298 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
299 */
Simon Glass2d2af852011-10-24 19:15:32 +0000300 cell = fdt_getprop(blob, node, "status", NULL);
301 if (cell)
Mario Six6abfbc82018-01-15 11:07:36 +0100302 return strcmp(cell, "okay") == 0;
Simon Glass65444982012-02-27 10:52:34 +0000303 return 1;
Simon Glass2d2af852011-10-24 19:15:32 +0000304}
305
Gerald Van Barencdac3392012-11-12 23:13:54 -0500306enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
Simon Glass2d2af852011-10-24 19:15:32 +0000307{
308 enum fdt_compat_id id;
309
310 /* Search our drivers */
311 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
Mario Six6abfbc82018-01-15 11:07:36 +0100312 if (fdt_node_check_compatible(blob, node,
313 compat_names[id]) == 0)
Simon Glass2d2af852011-10-24 19:15:32 +0000314 return id;
315 return COMPAT_UNKNOWN;
316}
317
Mario Sixbb3e06c2018-01-15 11:07:35 +0100318int fdtdec_next_compatible(const void *blob, int node, enum fdt_compat_id id)
Simon Glass2d2af852011-10-24 19:15:32 +0000319{
320 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
321}
322
Simon Glass2e979b12012-04-02 13:18:42 +0000323int fdtdec_next_compatible_subnode(const void *blob, int node,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100324 enum fdt_compat_id id, int *depthp)
Simon Glass2e979b12012-04-02 13:18:42 +0000325{
326 do {
327 node = fdt_next_node(blob, node, depthp);
328 } while (*depthp > 1);
329
330 /* If this is a direct subnode, and compatible, return it */
331 if (*depthp == 1 && 0 == fdt_node_check_compatible(
332 blob, node, compat_names[id]))
333 return node;
334
335 return -FDT_ERR_NOTFOUND;
336}
337
Mario Sixbb3e06c2018-01-15 11:07:35 +0100338int fdtdec_next_alias(const void *blob, const char *name, enum fdt_compat_id id,
339 int *upto)
Simon Glass2d2af852011-10-24 19:15:32 +0000340{
341#define MAX_STR_LEN 20
342 char str[MAX_STR_LEN + 20];
343 int node, err;
344
345 /* snprintf() is not available */
346 assert(strlen(name) < MAX_STR_LEN);
347 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
Simon Glasse1d15ca2012-10-31 14:02:42 +0000348 node = fdt_path_offset(blob, str);
Simon Glass2d2af852011-10-24 19:15:32 +0000349 if (node < 0)
350 return node;
351 err = fdt_node_check_compatible(blob, node, compat_names[id]);
352 if (err < 0)
353 return err;
Simon Glass65444982012-02-27 10:52:34 +0000354 if (err)
355 return -FDT_ERR_NOTFOUND;
356 (*upto)++;
357 return node;
Simon Glass2d2af852011-10-24 19:15:32 +0000358}
359
Simon Glassb022ead2012-01-17 08:20:50 +0000360int fdtdec_find_aliases_for_id(const void *blob, const char *name,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100361 enum fdt_compat_id id, int *node_list,
362 int maxcount)
Simon Glassb022ead2012-01-17 08:20:50 +0000363{
Simon Glass1f772662012-02-03 15:13:53 +0000364 memset(node_list, '\0', sizeof(*node_list) * maxcount);
365
366 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
367}
368
369/* TODO: Can we tighten this code up a little? */
370int fdtdec_add_aliases_for_id(const void *blob, const char *name,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100371 enum fdt_compat_id id, int *node_list,
372 int maxcount)
Simon Glass1f772662012-02-03 15:13:53 +0000373{
Simon Glassb022ead2012-01-17 08:20:50 +0000374 int name_len = strlen(name);
375 int nodes[maxcount];
376 int num_found = 0;
377 int offset, node;
378 int alias_node;
379 int count;
380 int i, j;
381
382 /* find the alias node if present */
383 alias_node = fdt_path_offset(blob, "/aliases");
384
385 /*
386 * start with nothing, and we can assume that the root node can't
387 * match
388 */
389 memset(nodes, '\0', sizeof(nodes));
390
391 /* First find all the compatible nodes */
392 for (node = count = 0; node >= 0 && count < maxcount;) {
393 node = fdtdec_next_compatible(blob, node, id);
394 if (node >= 0)
395 nodes[count++] = node;
396 }
397 if (node >= 0)
398 debug("%s: warning: maxcount exceeded with alias '%s'\n",
Mario Sixbb3e06c2018-01-15 11:07:35 +0100399 __func__, name);
Simon Glassb022ead2012-01-17 08:20:50 +0000400
401 /* Now find all the aliases */
Simon Glassb022ead2012-01-17 08:20:50 +0000402 for (offset = fdt_first_property_offset(blob, alias_node);
403 offset > 0;
404 offset = fdt_next_property_offset(blob, offset)) {
405 const struct fdt_property *prop;
406 const char *path;
407 int number;
408 int found;
409
410 node = 0;
411 prop = fdt_get_property_by_offset(blob, offset, NULL);
412 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
413 if (prop->len && 0 == strncmp(path, name, name_len))
414 node = fdt_path_offset(blob, prop->data);
415 if (node <= 0)
416 continue;
417
418 /* Get the alias number */
Simon Glassff9b9032021-07-24 09:03:30 -0600419 number = dectoul(path + name_len, NULL);
Simon Glassb022ead2012-01-17 08:20:50 +0000420 if (number < 0 || number >= maxcount) {
421 debug("%s: warning: alias '%s' is out of range\n",
Mario Sixbb3e06c2018-01-15 11:07:35 +0100422 __func__, path);
Simon Glassb022ead2012-01-17 08:20:50 +0000423 continue;
424 }
425
426 /* Make sure the node we found is actually in our list! */
427 found = -1;
428 for (j = 0; j < count; j++)
429 if (nodes[j] == node) {
430 found = j;
431 break;
432 }
433
434 if (found == -1) {
435 debug("%s: warning: alias '%s' points to a node "
436 "'%s' that is missing or is not compatible "
437 " with '%s'\n", __func__, path,
438 fdt_get_name(blob, node, NULL),
439 compat_names[id]);
440 continue;
441 }
442
443 /*
444 * Add this node to our list in the right place, and mark
445 * it as done.
446 */
447 if (fdtdec_get_is_enabled(blob, node)) {
Simon Glass1f772662012-02-03 15:13:53 +0000448 if (node_list[number]) {
449 debug("%s: warning: alias '%s' requires that "
450 "a node be placed in the list in a "
451 "position which is already filled by "
452 "node '%s'\n", __func__, path,
453 fdt_get_name(blob, node, NULL));
454 continue;
455 }
Simon Glassb022ead2012-01-17 08:20:50 +0000456 node_list[number] = node;
457 if (number >= num_found)
458 num_found = number + 1;
459 }
Simon Glass1f772662012-02-03 15:13:53 +0000460 nodes[found] = 0;
Simon Glassb022ead2012-01-17 08:20:50 +0000461 }
462
463 /* Add any nodes not mentioned by an alias */
464 for (i = j = 0; i < maxcount; i++) {
465 if (!node_list[i]) {
466 for (; j < maxcount; j++)
467 if (nodes[j] &&
Mario Sixbb3e06c2018-01-15 11:07:35 +0100468 fdtdec_get_is_enabled(blob, nodes[j]))
Simon Glassb022ead2012-01-17 08:20:50 +0000469 break;
470
471 /* Have we run out of nodes to add? */
472 if (j == maxcount)
473 break;
474
475 assert(!node_list[i]);
476 node_list[i] = nodes[j++];
477 if (i >= num_found)
478 num_found = i + 1;
479 }
480 }
481
482 return num_found;
483}
484
Simon Glass9908ad42014-07-23 06:55:09 -0600485int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
486 int *seqp)
487{
488 int base_len = strlen(base);
489 const char *find_name;
490 int find_namelen;
491 int prop_offset;
492 int aliases;
493
494 find_name = fdt_get_name(blob, offset, &find_namelen);
495 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
496
497 aliases = fdt_path_offset(blob, "/aliases");
498 for (prop_offset = fdt_first_property_offset(blob, aliases);
499 prop_offset > 0;
500 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
501 const char *prop;
502 const char *name;
503 const char *slash;
Simon Glass4aaa4602015-06-23 15:39:08 -0600504 int len, val;
Simon Glass9908ad42014-07-23 06:55:09 -0600505
506 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
507 debug(" - %s, %s\n", name, prop);
508 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
509 strncmp(name, base, base_len))
510 continue;
511
512 slash = strrchr(prop, '/');
513 if (strcmp(slash + 1, find_name))
514 continue;
Aswath Govindraju3dd81252020-12-03 10:55:45 +0530515
516 /*
517 * Adding an extra check to distinguish DT nodes with
518 * same name
519 */
Rasmus Villemoesc55d2612022-05-19 11:10:43 +0200520 if (offset != fdt_path_offset(blob, prop))
521 continue;
Aswath Govindraju3dd81252020-12-03 10:55:45 +0530522
Simon Glass4aaa4602015-06-23 15:39:08 -0600523 val = trailing_strtol(name);
524 if (val != -1) {
525 *seqp = val;
526 debug("Found seq %d\n", *seqp);
527 return 0;
Simon Glass9908ad42014-07-23 06:55:09 -0600528 }
529 }
530
531 debug("Not found\n");
532 return -ENOENT;
533}
534
Michal Simek4b586672019-01-31 16:30:58 +0100535int fdtdec_get_alias_highest_id(const void *blob, const char *base)
536{
537 int base_len = strlen(base);
538 int prop_offset;
539 int aliases;
540 int max = -1;
541
542 debug("Looking for highest alias id for '%s'\n", base);
543
544 aliases = fdt_path_offset(blob, "/aliases");
545 for (prop_offset = fdt_first_property_offset(blob, aliases);
546 prop_offset > 0;
547 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
548 const char *prop;
549 const char *name;
550 int len, val;
551
552 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
553 debug(" - %s, %s\n", name, prop);
554 if (*prop != '/' || prop[len - 1] ||
555 strncmp(name, base, base_len))
556 continue;
557
558 val = trailing_strtol(name);
559 if (val > max) {
560 debug("Found seq %d\n", val);
561 max = val;
562 }
563 }
564
565 return max;
566}
567
Simon Glass088dccb2015-10-17 19:41:14 -0600568const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
Simon Glass1e374fb2014-09-04 16:27:24 -0600569{
Simon Glass1e374fb2014-09-04 16:27:24 -0600570 int chosen_node;
Simon Glass1e374fb2014-09-04 16:27:24 -0600571
572 if (!blob)
Simon Glass088dccb2015-10-17 19:41:14 -0600573 return NULL;
Simon Glass1e374fb2014-09-04 16:27:24 -0600574 chosen_node = fdt_path_offset(blob, "/chosen");
Simon Glass088dccb2015-10-17 19:41:14 -0600575 return fdt_getprop(blob, chosen_node, name, NULL);
576}
577
578int fdtdec_get_chosen_node(const void *blob, const char *name)
579{
580 const char *prop;
581
582 prop = fdtdec_get_chosen_prop(blob, name);
Simon Glass1e374fb2014-09-04 16:27:24 -0600583 if (!prop)
584 return -FDT_ERR_NOTFOUND;
585 return fdt_path_offset(blob, prop);
586}
587
Simon Glass1691f692012-03-28 10:08:24 +0000588int fdtdec_check_fdt(void)
589{
590 /*
591 * We must have an FDT, but we cannot panic() yet since the console
592 * is not ready. So for now, just assert(). Boards which need an early
593 * FDT (prior to console ready) will need to make their own
594 * arrangements and do their own checks.
595 */
596 assert(!fdtdec_prepare_fdt());
597 return 0;
598}
599
Simon Glass2d2af852011-10-24 19:15:32 +0000600/*
601 * This function is a little odd in that it accesses global data. At some
602 * point if the architecture board.c files merge this will make more sense.
603 * Even now, it is common code.
604 */
Simon Glass1691f692012-03-28 10:08:24 +0000605int fdtdec_prepare_fdt(void)
Simon Glass2d2af852011-10-24 19:15:32 +0000606{
Simon Glass71136852013-04-20 08:42:46 +0000607 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
608 fdt_check_header(gd->fdt_blob)) {
Simon Glass509dbf92015-02-27 22:06:32 -0700609#ifdef CONFIG_SPL_BUILD
610 puts("Missing DTB\n");
611#else
Simon Glassa527e412021-01-13 20:29:48 -0700612 printf("No valid device tree binary found at %p\n",
613 gd->fdt_blob);
Simon Glass63884ec2015-06-23 15:39:09 -0600614# ifdef DEBUG
615 if (gd->fdt_blob) {
616 printf("fdt_blob=%p\n", gd->fdt_blob);
617 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
618 32, 0);
619 }
620# endif
Simon Glass509dbf92015-02-27 22:06:32 -0700621#endif
Simon Glass1691f692012-03-28 10:08:24 +0000622 return -1;
623 }
Simon Glass2d2af852011-10-24 19:15:32 +0000624 return 0;
625}
Simon Glassc4697362012-02-27 10:52:35 +0000626
627int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
628{
629 const u32 *phandle;
630 int lookup;
631
Simon Glassc8c86dd2012-07-12 05:25:01 +0000632 debug("%s: %s\n", __func__, prop_name);
Simon Glassc4697362012-02-27 10:52:35 +0000633 phandle = fdt_getprop(blob, node, prop_name, NULL);
634 if (!phandle)
635 return -FDT_ERR_NOTFOUND;
636
637 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
638 return lookup;
639}
640
641/**
642 * Look up a property in a node and check that it has a minimum length.
643 *
644 * @param blob FDT blob
645 * @param node node to examine
646 * @param prop_name name of property to find
647 * @param min_len minimum property length in bytes
648 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
649 found, or -FDT_ERR_BADLAYOUT if not enough data
Heinrich Schuchardt47b4c022022-01-19 18:05:50 +0100650 * Return: pointer to cell, which is only valid if err == 0
Simon Glassc4697362012-02-27 10:52:35 +0000651 */
652static const void *get_prop_check_min_len(const void *blob, int node,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100653 const char *prop_name, int min_len,
654 int *err)
Simon Glassc4697362012-02-27 10:52:35 +0000655{
656 const void *cell;
657 int len;
658
659 debug("%s: %s\n", __func__, prop_name);
660 cell = fdt_getprop(blob, node, prop_name, &len);
661 if (!cell)
662 *err = -FDT_ERR_NOTFOUND;
663 else if (len < min_len)
664 *err = -FDT_ERR_BADLAYOUT;
665 else
666 *err = 0;
667 return cell;
668}
669
670int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100671 u32 *array, int count)
Simon Glassc4697362012-02-27 10:52:35 +0000672{
673 const u32 *cell;
Mario Six6abfbc82018-01-15 11:07:36 +0100674 int err = 0;
Simon Glassc4697362012-02-27 10:52:35 +0000675
676 debug("%s: %s\n", __func__, prop_name);
677 cell = get_prop_check_min_len(blob, node, prop_name,
678 sizeof(u32) * count, &err);
679 if (!err) {
Mario Six6abfbc82018-01-15 11:07:36 +0100680 int i;
681
Simon Glassc4697362012-02-27 10:52:35 +0000682 for (i = 0; i < count; i++)
683 array[i] = fdt32_to_cpu(cell[i]);
684 }
685 return err;
686}
687
Simon Glasseda0c3f2014-11-10 18:00:19 -0700688int fdtdec_get_int_array_count(const void *blob, int node,
689 const char *prop_name, u32 *array, int count)
690{
691 const u32 *cell;
692 int len, elems;
693 int i;
694
695 debug("%s: %s\n", __func__, prop_name);
696 cell = fdt_getprop(blob, node, prop_name, &len);
697 if (!cell)
698 return -FDT_ERR_NOTFOUND;
699 elems = len / sizeof(u32);
700 if (count > elems)
701 count = elems;
702 for (i = 0; i < count; i++)
703 array[i] = fdt32_to_cpu(cell[i]);
704
705 return count;
706}
707
Simon Glass744ec232012-04-02 13:18:41 +0000708const u32 *fdtdec_locate_array(const void *blob, int node,
709 const char *prop_name, int count)
710{
711 const u32 *cell;
712 int err;
713
714 cell = get_prop_check_min_len(blob, node, prop_name,
715 sizeof(u32) * count, &err);
716 return err ? NULL : cell;
717}
718
Simon Glassc4697362012-02-27 10:52:35 +0000719int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
720{
721 const s32 *cell;
722 int len;
723
724 debug("%s: %s\n", __func__, prop_name);
725 cell = fdt_getprop(blob, node, prop_name, &len);
726 return cell != NULL;
727}
Simon Glass0d83c4d2012-02-27 10:52:36 +0000728
Simon Glassb491e9c2015-01-05 20:05:26 -0700729int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
730 const char *list_name,
731 const char *cells_name,
732 int cell_count, int index,
733 struct fdtdec_phandle_args *out_args)
734{
735 const __be32 *list, *list_end;
736 int rc = 0, size, cur_index = 0;
737 uint32_t count = 0;
738 int node = -1;
739 int phandle;
740
741 /* Retrieve the phandle list property */
742 list = fdt_getprop(blob, src_node, list_name, &size);
743 if (!list)
744 return -ENOENT;
745 list_end = list + size / sizeof(*list);
746
747 /* Loop over the phandles until all the requested entry is found */
748 while (list < list_end) {
749 rc = -EINVAL;
750 count = 0;
751
752 /*
753 * If phandle is 0, then it is an empty entry with no
754 * arguments. Skip forward to the next entry.
755 */
756 phandle = be32_to_cpup(list++);
757 if (phandle) {
758 /*
759 * Find the provider node and parse the #*-cells
760 * property to determine the argument length.
761 *
762 * This is not needed if the cell count is hard-coded
763 * (i.e. cells_name not set, but cell_count is set),
764 * except when we're going to return the found node
765 * below.
766 */
767 if (cells_name || cur_index == index) {
768 node = fdt_node_offset_by_phandle(blob,
769 phandle);
Patrick Delaunayf9cbd1a2020-09-25 09:41:15 +0200770 if (node < 0) {
Simon Glassb491e9c2015-01-05 20:05:26 -0700771 debug("%s: could not find phandle\n",
772 fdt_get_name(blob, src_node,
773 NULL));
774 goto err;
775 }
776 }
777
778 if (cells_name) {
779 count = fdtdec_get_int(blob, node, cells_name,
780 -1);
781 if (count == -1) {
782 debug("%s: could not get %s for %s\n",
783 fdt_get_name(blob, src_node,
784 NULL),
785 cells_name,
786 fdt_get_name(blob, node,
787 NULL));
788 goto err;
789 }
790 } else {
791 count = cell_count;
792 }
793
794 /*
795 * Make sure that the arguments actually fit in the
796 * remaining property data length
797 */
798 if (list + count > list_end) {
799 debug("%s: arguments longer than property\n",
800 fdt_get_name(blob, src_node, NULL));
801 goto err;
802 }
803 }
804
805 /*
806 * All of the error cases above bail out of the loop, so at
807 * this point, the parsing is successful. If the requested
808 * index matches, then fill the out_args structure and return,
809 * or return -ENOENT for an empty entry.
810 */
811 rc = -ENOENT;
812 if (cur_index == index) {
813 if (!phandle)
814 goto err;
815
816 if (out_args) {
817 int i;
818
819 if (count > MAX_PHANDLE_ARGS) {
820 debug("%s: too many arguments %d\n",
821 fdt_get_name(blob, src_node,
822 NULL), count);
823 count = MAX_PHANDLE_ARGS;
824 }
825 out_args->node = node;
826 out_args->args_count = count;
827 for (i = 0; i < count; i++) {
828 out_args->args[i] =
829 be32_to_cpup(list++);
830 }
831 }
832
833 /* Found it! return success */
834 return 0;
835 }
836
837 node = -1;
838 list += count;
839 cur_index++;
840 }
841
842 /*
843 * Result will be one of:
844 * -ENOENT : index is for empty phandle
845 * -EINVAL : parsing error on data
846 * [1..n] : Number of phandle (count mode; when index = -1)
847 */
848 rc = index < 0 ? cur_index : -ENOENT;
849 err:
850 return rc;
851}
852
Anton Stafff2305ec2012-04-17 09:01:28 +0000853int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100854 u8 *array, int count)
Anton Stafff2305ec2012-04-17 09:01:28 +0000855{
856 const u8 *cell;
857 int err;
858
859 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
860 if (!err)
861 memcpy(array, cell, count);
862 return err;
863}
864
865const u8 *fdtdec_locate_byte_array(const void *blob, int node,
Mario Sixbb3e06c2018-01-15 11:07:35 +0100866 const char *prop_name, int count)
Anton Stafff2305ec2012-04-17 09:01:28 +0000867{
868 const u8 *cell;
869 int err;
870
871 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
872 if (err)
873 return NULL;
874 return cell;
875}
Abhilash Kesavan67217af2012-10-25 16:30:58 +0000876
Simon Glass9ffbe332015-03-05 12:25:14 -0700877u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
Thierry Redinga937b802014-08-26 17:33:53 +0200878{
879 u64 number = 0;
880
881 while (cells--)
882 number = (number << 32) | fdt32_to_cpu(*ptr++);
883
884 return number;
885}
886
887int fdt_get_resource(const void *fdt, int node, const char *property,
888 unsigned int index, struct fdt_resource *res)
889{
890 const fdt32_t *ptr, *end;
891 int na, ns, len, parent;
892 unsigned int i = 0;
893
894 parent = fdt_parent_offset(fdt, node);
895 if (parent < 0)
896 return parent;
897
898 na = fdt_address_cells(fdt, parent);
899 ns = fdt_size_cells(fdt, parent);
900
901 ptr = fdt_getprop(fdt, node, property, &len);
902 if (!ptr)
903 return len;
904
905 end = ptr + len / sizeof(*ptr);
906
907 while (ptr + na + ns <= end) {
908 if (i == index) {
Patrick Delaunay2a28c6e2021-04-06 09:38:06 +0200909 if (CONFIG_IS_ENABLED(OF_TRANSLATE))
910 res->start = fdt_translate_address(fdt, node, ptr);
911 else
912 res->start = fdtdec_get_number(ptr, na);
913
Mario Six6abfbc82018-01-15 11:07:36 +0100914 res->end = res->start;
Thierry Redinga937b802014-08-26 17:33:53 +0200915 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
916 return 0;
917 }
918
919 ptr += na + ns;
920 i++;
921 }
922
923 return -FDT_ERR_NOTFOUND;
924}
925
926int fdt_get_named_resource(const void *fdt, int node, const char *property,
927 const char *prop_names, const char *name,
928 struct fdt_resource *res)
929{
930 int index;
931
Simon Glassb0ea7402016-10-02 17:59:28 -0600932 index = fdt_stringlist_search(fdt, node, prop_names, name);
Thierry Redinga937b802014-08-26 17:33:53 +0200933 if (index < 0)
934 return index;
935
936 return fdt_get_resource(fdt, node, property, index, res);
937}
Thierry Reding24856312014-08-26 17:33:54 +0200938
Simon Glassb24e8642015-04-14 21:03:21 -0600939static int decode_timing_property(const void *blob, int node, const char *name,
940 struct timing_entry *result)
941{
942 int length, ret = 0;
943 const u32 *prop;
944
945 prop = fdt_getprop(blob, node, name, &length);
946 if (!prop) {
947 debug("%s: could not find property %s\n",
948 fdt_get_name(blob, node, NULL), name);
949 return length;
950 }
951
952 if (length == sizeof(u32)) {
953 result->typ = fdtdec_get_int(blob, node, name, 0);
954 result->min = result->typ;
955 result->max = result->typ;
956 } else {
957 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
958 }
959
960 return ret;
961}
962
963int fdtdec_decode_display_timing(const void *blob, int parent, int index,
964 struct display_timing *dt)
965{
966 int i, node, timings_node;
967 u32 val = 0;
968 int ret = 0;
969
970 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
971 if (timings_node < 0)
972 return timings_node;
973
974 for (i = 0, node = fdt_first_subnode(blob, timings_node);
975 node > 0 && i != index;
976 node = fdt_next_subnode(blob, node))
977 i++;
978
979 if (node < 0)
980 return node;
981
982 memset(dt, 0, sizeof(*dt));
983
984 ret |= decode_timing_property(blob, node, "hback-porch",
985 &dt->hback_porch);
986 ret |= decode_timing_property(blob, node, "hfront-porch",
987 &dt->hfront_porch);
988 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
989 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
990 ret |= decode_timing_property(blob, node, "vback-porch",
991 &dt->vback_porch);
992 ret |= decode_timing_property(blob, node, "vfront-porch",
993 &dt->vfront_porch);
994 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
995 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
996 ret |= decode_timing_property(blob, node, "clock-frequency",
997 &dt->pixelclock);
998
999 dt->flags = 0;
1000 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1001 if (val != -1) {
1002 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1003 DISPLAY_FLAGS_VSYNC_LOW;
1004 }
1005 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1006 if (val != -1) {
1007 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1008 DISPLAY_FLAGS_HSYNC_LOW;
1009 }
1010 val = fdtdec_get_int(blob, node, "de-active", -1);
1011 if (val != -1) {
1012 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1013 DISPLAY_FLAGS_DE_LOW;
1014 }
1015 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1016 if (val != -1) {
1017 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1018 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1019 }
1020
1021 if (fdtdec_get_bool(blob, node, "interlaced"))
1022 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1023 if (fdtdec_get_bool(blob, node, "doublescan"))
1024 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1025 if (fdtdec_get_bool(blob, node, "doubleclk"))
1026 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1027
Simon Glass6eb90e12016-05-05 07:28:21 -06001028 return ret;
Simon Glassb24e8642015-04-14 21:03:21 -06001029}
1030
Michal Simek43ba85b2020-07-10 13:16:50 +02001031int fdtdec_setup_mem_size_base(void)
Nathan Rossiba97b722016-12-19 00:03:34 +10001032{
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001033 int ret;
1034 ofnode mem;
1035 struct resource res;
Nathan Rossiba97b722016-12-19 00:03:34 +10001036
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001037 mem = ofnode_path("/memory");
1038 if (!ofnode_valid(mem)) {
Nathan Rossiba97b722016-12-19 00:03:34 +10001039 debug("%s: Missing /memory node\n", __func__);
1040 return -EINVAL;
1041 }
1042
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001043 ret = ofnode_read_resource(mem, 0, &res);
Nathan Rossiba97b722016-12-19 00:03:34 +10001044 if (ret != 0) {
1045 debug("%s: Unable to decode first memory bank\n", __func__);
1046 return -EINVAL;
1047 }
1048
1049 gd->ram_size = (phys_size_t)(res.end - res.start + 1);
Siva Durga Prasad Paladugu94a1d522018-07-16 15:56:10 +05301050 gd->ram_base = (unsigned long)res.start;
Simon Glass640b78f2017-05-27 07:38:13 -06001051 debug("%s: Initial DRAM size %llx\n", __func__,
1052 (unsigned long long)gd->ram_size);
Nathan Rossiba97b722016-12-19 00:03:34 +10001053
1054 return 0;
1055}
1056
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001057ofnode get_next_memory_node(ofnode mem)
Jens Wiklandere2da4c92018-07-13 12:12:11 +02001058{
Jens Wiklandere2da4c92018-07-13 12:12:11 +02001059 do {
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001060 mem = ofnode_by_prop_value(mem, "device_type", "memory", 7);
1061 } while (!ofnode_is_available(mem));
Jens Wiklandere2da4c92018-07-13 12:12:11 +02001062
1063 return mem;
1064}
1065
Michal Simekf7833292020-07-10 13:16:49 +02001066int fdtdec_setup_memory_banksize(void)
Nathan Rossiba97b722016-12-19 00:03:34 +10001067{
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001068 int bank, ret, reg = 0;
1069 struct resource res;
1070 ofnode mem = ofnode_null();
Nathan Rossiba97b722016-12-19 00:03:34 +10001071
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001072 mem = get_next_memory_node(mem);
1073 if (!ofnode_valid(mem)) {
Michal Simek0bd065c2018-10-03 15:53:52 +02001074 debug("%s: Missing /memory node\n", __func__);
1075 return -EINVAL;
1076 }
Nathan Rossiba97b722016-12-19 00:03:34 +10001077
1078 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001079 ret = ofnode_read_resource(mem, reg++, &res);
1080 if (ret < 0) {
Marek Vasut7f0293a2017-11-27 05:32:42 +01001081 reg = 0;
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001082 mem = get_next_memory_node(mem);
Marek Vasut253c1a42020-09-12 12:42:52 +02001083 if (!ofnode_valid(mem))
Michal Simek0bd065c2018-10-03 15:53:52 +02001084 break;
1085
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001086 ret = ofnode_read_resource(mem, reg++, &res);
1087 if (ret < 0)
Michal Simek0bd065c2018-10-03 15:53:52 +02001088 break;
1089 }
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001090
1091 if (ret != 0)
Michal Simek0bd065c2018-10-03 15:53:52 +02001092 return -EINVAL;
Nathan Rossiba97b722016-12-19 00:03:34 +10001093
1094 gd->bd->bi_dram[bank].start = (phys_addr_t)res.start;
1095 gd->bd->bi_dram[bank].size =
1096 (phys_size_t)(res.end - res.start + 1);
1097
1098 debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
1099 __func__, bank,
1100 (unsigned long long)gd->bd->bi_dram[bank].start,
1101 (unsigned long long)gd->bd->bi_dram[bank].size);
1102 }
1103
1104 return 0;
1105}
Michal Simek9d2cf072020-07-09 14:09:52 +02001106
1107int fdtdec_setup_mem_size_base_lowest(void)
1108{
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001109 int bank, ret, reg = 0;
1110 struct resource res;
Michal Simek9d2cf072020-07-09 14:09:52 +02001111 unsigned long base;
1112 phys_size_t size;
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001113 ofnode mem = ofnode_null();
Michal Simek9d2cf072020-07-09 14:09:52 +02001114
1115 gd->ram_base = (unsigned long)~0;
1116
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001117 mem = get_next_memory_node(mem);
1118 if (!ofnode_valid(mem)) {
Michal Simek9d2cf072020-07-09 14:09:52 +02001119 debug("%s: Missing /memory node\n", __func__);
1120 return -EINVAL;
1121 }
1122
1123 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001124 ret = ofnode_read_resource(mem, reg++, &res);
1125 if (ret < 0) {
Michal Simek9d2cf072020-07-09 14:09:52 +02001126 reg = 0;
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001127 mem = get_next_memory_node(mem);
Marek Vasut253c1a42020-09-12 12:42:52 +02001128 if (!ofnode_valid(mem))
Michal Simek9d2cf072020-07-09 14:09:52 +02001129 break;
1130
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001131 ret = ofnode_read_resource(mem, reg++, &res);
1132 if (ret < 0)
Michal Simek9d2cf072020-07-09 14:09:52 +02001133 break;
1134 }
Michal Simek6dd9cfd2020-07-10 13:34:44 +02001135
Michal Simek9d2cf072020-07-09 14:09:52 +02001136 if (ret != 0)
1137 return -EINVAL;
1138
1139 base = (unsigned long)res.start;
1140 size = (phys_size_t)(res.end - res.start + 1);
1141
1142 if (gd->ram_base > base && size) {
1143 gd->ram_base = base;
1144 gd->ram_size = size;
1145 debug("%s: Initial DRAM base %lx size %lx\n",
1146 __func__, base, (unsigned long)size);
1147 }
1148 }
1149
1150 return 0;
1151}
Nathan Rossiba97b722016-12-19 00:03:34 +10001152
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001153static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1154{
Simon Glass69daf5a2021-12-16 20:59:25 -07001155#if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\
1156 CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO)
Marek Vasutaeaa29d2019-03-08 16:06:55 +01001157 size_t sz_out = CONFIG_VAL(MULTI_DTB_FIT_UNCOMPRESS_SZ);
Marek Vasut42e5c032019-03-13 21:11:22 +01001158 bool gzip = 0, lzo = 0;
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001159 ulong sz_in = sz_src;
1160 void *dst;
1161 int rc;
1162
1163 if (CONFIG_IS_ENABLED(GZIP))
Marek Vasut42e5c032019-03-13 21:11:22 +01001164 if (gzip_parse_header(src, sz_in) >= 0)
1165 gzip = 1;
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001166 if (CONFIG_IS_ENABLED(LZO))
Marek Vasut42e5c032019-03-13 21:11:22 +01001167 if (!gzip && lzop_is_valid_header(src))
1168 lzo = 1;
1169
1170 if (!gzip && !lzo)
1171 return -EBADMSG;
1172
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001173
1174 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) {
1175 dst = malloc(sz_out);
1176 if (!dst) {
1177 puts("uncompress_blob: Unable to allocate memory\n");
1178 return -ENOMEM;
1179 }
1180 } else {
Simon Glass69daf5a2021-12-16 20:59:25 -07001181# if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA)
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001182 dst = (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR);
Simon Glass69daf5a2021-12-16 20:59:25 -07001183# else
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001184 return -ENOTSUPP;
Simon Glass69daf5a2021-12-16 20:59:25 -07001185# endif
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001186 }
1187
Marek Vasut42e5c032019-03-13 21:11:22 +01001188 if (CONFIG_IS_ENABLED(GZIP) && gzip)
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001189 rc = gunzip(dst, sz_out, (u8 *)src, &sz_in);
Marek Vasut42e5c032019-03-13 21:11:22 +01001190 else if (CONFIG_IS_ENABLED(LZO) && lzo)
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001191 rc = lzop_decompress(src, sz_in, dst, &sz_out);
Marek Vasut42e5c032019-03-13 21:11:22 +01001192 else
1193 hang();
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001194
1195 if (rc < 0) {
1196 /* not a valid compressed blob */
1197 puts("uncompress_blob: Unable to uncompress\n");
1198 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC))
1199 free(dst);
1200 return -EBADMSG;
1201 }
1202 *dstp = dst;
Simon Glass69daf5a2021-12-16 20:59:25 -07001203#else
1204 *dstp = (void *)src;
Marek Vasut5bd49fb2018-10-18 20:37:05 +02001205 *dstp = (void *)src;
Simon Glass69daf5a2021-12-16 20:59:25 -07001206#endif
Marek Vasut5bd49fb2018-10-18 20:37:05 +02001207 return 0;
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001208}
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001209
Simon Glass28b76512021-12-16 20:59:31 -07001210/**
1211 * fdt_find_separate() - Find a devicetree at the end of the image
1212 *
Heinrich Schuchardt47b4c022022-01-19 18:05:50 +01001213 * Return: pointer to FDT blob
Rob Clark974dcac2018-01-10 11:34:37 +01001214 */
Simon Glass28b76512021-12-16 20:59:31 -07001215static void *fdt_find_separate(void)
Rob Clark974dcac2018-01-10 11:34:37 +01001216{
1217 void *fdt_blob = NULL;
Ilias Apalodimasab5348a2021-10-26 09:12:33 +03001218
Simon Glassdf5f4382022-02-28 12:08:24 -07001219 if (IS_ENABLED(CONFIG_SANDBOX))
1220 return NULL;
1221
Rob Clark974dcac2018-01-10 11:34:37 +01001222#ifdef CONFIG_SPL_BUILD
1223 /* FDT is at end of BSS unless it is in a different memory region */
Andrew Abbottb449fed2022-04-16 10:12:31 +10001224 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
Rob Clark974dcac2018-01-10 11:34:37 +01001225 fdt_blob = (ulong *)&_image_binary_end;
1226 else
1227 fdt_blob = (ulong *)&__bss_end;
1228#else
1229 /* FDT is at end of image */
1230 fdt_blob = (ulong *)&_end;
1231#endif
Ilias Apalodimasab5348a2021-10-26 09:12:33 +03001232
Rob Clark974dcac2018-01-10 11:34:37 +01001233 return fdt_blob;
1234}
Rob Clark974dcac2018-01-10 11:34:37 +01001235
Thierry Reding1bb59a92019-04-15 11:32:13 +02001236int fdtdec_set_ethernet_mac_address(void *fdt, const u8 *mac, size_t size)
1237{
1238 const char *path;
1239 int offset, err;
1240
1241 if (!is_valid_ethaddr(mac))
1242 return -EINVAL;
1243
1244 path = fdt_get_alias(fdt, "ethernet");
1245 if (!path)
1246 return 0;
1247
1248 debug("ethernet alias found: %s\n", path);
1249
1250 offset = fdt_path_offset(fdt, path);
1251 if (offset < 0) {
1252 debug("ethernet alias points to absent node %s\n", path);
1253 return -ENOENT;
1254 }
1255
1256 err = fdt_setprop_inplace(fdt, offset, "local-mac-address", mac, size);
1257 if (err < 0)
1258 return err;
1259
1260 debug("MAC address: %pM\n", mac);
1261
1262 return 0;
1263}
1264
Thierry Redinge8dfad42019-03-21 19:10:02 +01001265static int fdtdec_init_reserved_memory(void *blob)
1266{
1267 int na, ns, node, err;
1268 fdt32_t value;
1269
1270 /* inherit #address-cells and #size-cells from the root node */
1271 na = fdt_address_cells(blob, 0);
1272 ns = fdt_size_cells(blob, 0);
1273
1274 node = fdt_add_subnode(blob, 0, "reserved-memory");
1275 if (node < 0)
1276 return node;
1277
1278 err = fdt_setprop(blob, node, "ranges", NULL, 0);
1279 if (err < 0)
1280 return err;
1281
1282 value = cpu_to_fdt32(ns);
1283
1284 err = fdt_setprop(blob, node, "#size-cells", &value, sizeof(value));
1285 if (err < 0)
1286 return err;
1287
1288 value = cpu_to_fdt32(na);
1289
1290 err = fdt_setprop(blob, node, "#address-cells", &value, sizeof(value));
1291 if (err < 0)
1292 return err;
1293
1294 return node;
1295}
1296
1297int fdtdec_add_reserved_memory(void *blob, const char *basename,
1298 const struct fdt_memory *carveout,
Thierry Reding5e336912021-09-03 15:16:19 +02001299 const char **compatibles, unsigned int count,
Thierry Redingbedc4392021-09-03 15:16:21 +02001300 uint32_t *phandlep, unsigned long flags)
Thierry Redinge8dfad42019-03-21 19:10:02 +01001301{
1302 fdt32_t cells[4] = {}, *ptr = cells;
1303 uint32_t upper, lower, phandle;
1304 int parent, node, na, ns, err;
Thierry Reding26130012019-04-15 10:08:21 +02001305 fdt_size_t size;
Thierry Redinge8dfad42019-03-21 19:10:02 +01001306 char name[64];
1307
1308 /* create an empty /reserved-memory node if one doesn't exist */
1309 parent = fdt_path_offset(blob, "/reserved-memory");
1310 if (parent < 0) {
1311 parent = fdtdec_init_reserved_memory(blob);
1312 if (parent < 0)
1313 return parent;
1314 }
1315
1316 /* only 1 or 2 #address-cells and #size-cells are supported */
1317 na = fdt_address_cells(blob, parent);
1318 if (na < 1 || na > 2)
1319 return -FDT_ERR_BADNCELLS;
1320
1321 ns = fdt_size_cells(blob, parent);
1322 if (ns < 1 || ns > 2)
1323 return -FDT_ERR_BADNCELLS;
1324
1325 /* find a matching node and return the phandle to that */
1326 fdt_for_each_subnode(node, blob, parent) {
1327 const char *name = fdt_get_name(blob, node, NULL);
Bin Menga26ad7a2020-05-19 23:38:32 -07001328 fdt_addr_t addr;
1329 fdt_size_t size;
Thierry Redinge8dfad42019-03-21 19:10:02 +01001330
Bin Meng32d294b2020-05-19 23:38:33 -07001331 addr = fdtdec_get_addr_size_fixed(blob, node, "reg", 0, na, ns,
1332 &size, false);
Thierry Redinge8dfad42019-03-21 19:10:02 +01001333 if (addr == FDT_ADDR_T_NONE) {
1334 debug("failed to read address/size for %s\n", name);
1335 continue;
1336 }
1337
Atish Patrab57af062020-04-21 11:15:00 -07001338 if (addr == carveout->start && (addr + size - 1) ==
1339 carveout->end) {
Heiko Stuebner49723ac2019-10-23 16:46:38 +02001340 if (phandlep)
1341 *phandlep = fdt_get_phandle(blob, node);
Thierry Redinge8dfad42019-03-21 19:10:02 +01001342 return 0;
1343 }
1344 }
1345
1346 /*
1347 * Unpack the start address and generate the name of the new node
1348 * base on the basename and the unit-address.
1349 */
Thierry Reding26130012019-04-15 10:08:21 +02001350 upper = upper_32_bits(carveout->start);
1351 lower = lower_32_bits(carveout->start);
Thierry Redinge8dfad42019-03-21 19:10:02 +01001352
1353 if (na > 1 && upper > 0)
1354 snprintf(name, sizeof(name), "%s@%x,%x", basename, upper,
1355 lower);
1356 else {
1357 if (upper > 0) {
1358 debug("address %08x:%08x exceeds addressable space\n",
1359 upper, lower);
1360 return -FDT_ERR_BADVALUE;
1361 }
1362
1363 snprintf(name, sizeof(name), "%s@%x", basename, lower);
1364 }
1365
1366 node = fdt_add_subnode(blob, parent, name);
1367 if (node < 0)
1368 return node;
1369
Thierry Redingbedc4392021-09-03 15:16:21 +02001370 if (flags & FDTDEC_RESERVED_MEMORY_NO_MAP) {
1371 err = fdt_setprop(blob, node, "no-map", NULL, 0);
1372 if (err < 0)
1373 return err;
1374 }
1375
Heiko Stuebner754302f2019-10-23 16:46:39 +02001376 if (phandlep) {
1377 err = fdt_generate_phandle(blob, &phandle);
1378 if (err < 0)
1379 return err;
Thierry Redinge8dfad42019-03-21 19:10:02 +01001380
Heiko Stuebner754302f2019-10-23 16:46:39 +02001381 err = fdtdec_set_phandle(blob, node, phandle);
1382 if (err < 0)
1383 return err;
1384 }
Thierry Redinge8dfad42019-03-21 19:10:02 +01001385
1386 /* store one or two address cells */
1387 if (na > 1)
1388 *ptr++ = cpu_to_fdt32(upper);
1389
1390 *ptr++ = cpu_to_fdt32(lower);
1391
1392 /* store one or two size cells */
Thierry Reding26130012019-04-15 10:08:21 +02001393 size = carveout->end - carveout->start + 1;
1394 upper = upper_32_bits(size);
1395 lower = lower_32_bits(size);
Thierry Redinge8dfad42019-03-21 19:10:02 +01001396
1397 if (ns > 1)
1398 *ptr++ = cpu_to_fdt32(upper);
1399
1400 *ptr++ = cpu_to_fdt32(lower);
1401
1402 err = fdt_setprop(blob, node, "reg", cells, (na + ns) * sizeof(*cells));
1403 if (err < 0)
1404 return err;
1405
Thierry Reding5e336912021-09-03 15:16:19 +02001406 if (compatibles && count > 0) {
1407 size_t length = 0, len = 0;
1408 unsigned int i;
1409 char *buffer;
1410
1411 for (i = 0; i < count; i++)
1412 length += strlen(compatibles[i]) + 1;
1413
1414 buffer = malloc(length);
1415 if (!buffer)
1416 return -FDT_ERR_INTERNAL;
1417
1418 for (i = 0; i < count; i++)
1419 len += strlcpy(buffer + len, compatibles[i],
1420 length - len) + 1;
1421
1422 err = fdt_setprop(blob, node, "compatible", buffer, length);
1423 free(buffer);
1424 if (err < 0)
1425 return err;
1426 }
1427
Thierry Redinge8dfad42019-03-21 19:10:02 +01001428 /* return the phandle for the new node for the caller to use */
1429 if (phandlep)
1430 *phandlep = phandle;
1431
1432 return 0;
1433}
1434
Thierry Reding8a3c9fc2021-09-03 15:16:18 +02001435int fdtdec_get_carveout(const void *blob, const char *node,
1436 const char *prop_name, unsigned int index,
Thierry Reding5e336912021-09-03 15:16:19 +02001437 struct fdt_memory *carveout, const char **name,
Thierry Redingbedc4392021-09-03 15:16:21 +02001438 const char ***compatiblesp, unsigned int *countp,
1439 unsigned long *flags)
Thierry Redinge629b0d2019-03-21 19:10:03 +01001440{
1441 const fdt32_t *prop;
1442 uint32_t phandle;
1443 int offset, len;
1444 fdt_size_t size;
1445
1446 offset = fdt_path_offset(blob, node);
1447 if (offset < 0)
1448 return offset;
1449
Thierry Reding8a3c9fc2021-09-03 15:16:18 +02001450 prop = fdt_getprop(blob, offset, prop_name, &len);
Thierry Redinge629b0d2019-03-21 19:10:03 +01001451 if (!prop) {
Thierry Reding8a3c9fc2021-09-03 15:16:18 +02001452 debug("failed to get %s for %s\n", prop_name, node);
Thierry Redinge629b0d2019-03-21 19:10:03 +01001453 return -FDT_ERR_NOTFOUND;
1454 }
1455
1456 if ((len % sizeof(phandle)) != 0) {
1457 debug("invalid phandle property\n");
1458 return -FDT_ERR_BADPHANDLE;
1459 }
1460
1461 if (len < (sizeof(phandle) * (index + 1))) {
1462 debug("invalid phandle index\n");
Thierry Reding3dcc4cf2021-09-03 15:16:17 +02001463 return -FDT_ERR_NOTFOUND;
Thierry Redinge629b0d2019-03-21 19:10:03 +01001464 }
1465
1466 phandle = fdt32_to_cpu(prop[index]);
1467
1468 offset = fdt_node_offset_by_phandle(blob, phandle);
1469 if (offset < 0) {
1470 debug("failed to find node for phandle %u\n", phandle);
1471 return offset;
1472 }
1473
Thierry Reding8a3c9fc2021-09-03 15:16:18 +02001474 if (name)
1475 *name = fdt_get_name(blob, offset, NULL);
1476
Thierry Reding5e336912021-09-03 15:16:19 +02001477 if (compatiblesp) {
1478 const char **compatibles = NULL;
1479 const char *start, *end, *ptr;
1480 unsigned int count = 0;
1481
1482 prop = fdt_getprop(blob, offset, "compatible", &len);
1483 if (!prop)
1484 goto skip_compat;
1485
1486 start = ptr = (const char *)prop;
1487 end = start + len;
1488
1489 while (ptr < end) {
1490 ptr = strchrnul(ptr, '\0');
1491 count++;
1492 ptr++;
1493 }
1494
1495 compatibles = malloc(sizeof(ptr) * count);
1496 if (!compatibles)
1497 return -FDT_ERR_INTERNAL;
1498
1499 ptr = start;
1500 count = 0;
1501
1502 while (ptr < end) {
1503 compatibles[count] = ptr;
1504 ptr = strchrnul(ptr, '\0');
1505 count++;
1506 ptr++;
1507 }
1508
1509skip_compat:
1510 *compatiblesp = compatibles;
1511
1512 if (countp)
1513 *countp = count;
1514 }
1515
Thierry Redinge629b0d2019-03-21 19:10:03 +01001516 carveout->start = fdtdec_get_addr_size_auto_noparent(blob, offset,
1517 "reg", 0, &size,
1518 true);
1519 if (carveout->start == FDT_ADDR_T_NONE) {
1520 debug("failed to read address/size from \"reg\" property\n");
1521 return -FDT_ERR_NOTFOUND;
1522 }
1523
1524 carveout->end = carveout->start + size - 1;
1525
Thierry Redingbedc4392021-09-03 15:16:21 +02001526 if (flags) {
1527 *flags = 0;
1528
1529 if (fdtdec_get_bool(blob, offset, "no-map"))
1530 *flags |= FDTDEC_RESERVED_MEMORY_NO_MAP;
1531 }
1532
Thierry Redinge629b0d2019-03-21 19:10:03 +01001533 return 0;
1534}
1535
1536int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name,
Thierry Redingd6ad8072021-09-03 15:16:20 +02001537 unsigned int index, const struct fdt_memory *carveout,
1538 const char *name, const char **compatibles,
Thierry Redingbedc4392021-09-03 15:16:21 +02001539 unsigned int count, unsigned long flags)
Thierry Redinge629b0d2019-03-21 19:10:03 +01001540{
1541 uint32_t phandle;
Laurentiu Tudoref135222020-04-03 13:43:03 +03001542 int err, offset, len;
Thierry Redinge629b0d2019-03-21 19:10:03 +01001543 fdt32_t value;
Laurentiu Tudoref135222020-04-03 13:43:03 +03001544 void *prop;
Thierry Redinge629b0d2019-03-21 19:10:03 +01001545
Thierry Reding5e336912021-09-03 15:16:19 +02001546 err = fdtdec_add_reserved_memory(blob, name, carveout, compatibles,
Thierry Redingbedc4392021-09-03 15:16:21 +02001547 count, &phandle, flags);
Thierry Redinge629b0d2019-03-21 19:10:03 +01001548 if (err < 0) {
1549 debug("failed to add reserved memory: %d\n", err);
1550 return err;
1551 }
1552
1553 offset = fdt_path_offset(blob, node);
1554 if (offset < 0) {
1555 debug("failed to find offset for node %s: %d\n", node, offset);
1556 return offset;
1557 }
1558
1559 value = cpu_to_fdt32(phandle);
1560
Laurentiu Tudoref135222020-04-03 13:43:03 +03001561 if (!fdt_getprop(blob, offset, prop_name, &len)) {
1562 if (len == -FDT_ERR_NOTFOUND)
1563 len = 0;
1564 else
1565 return len;
1566 }
1567
1568 if ((index + 1) * sizeof(value) > len) {
1569 err = fdt_setprop_placeholder(blob, offset, prop_name,
1570 (index + 1) * sizeof(value),
1571 &prop);
1572 if (err < 0) {
1573 debug("failed to resize reserved memory property: %s\n",
1574 fdt_strerror(err));
1575 return err;
1576 }
1577 }
1578
1579 err = fdt_setprop_inplace_namelen_partial(blob, offset, prop_name,
1580 strlen(prop_name),
1581 index * sizeof(value),
1582 &value, sizeof(value));
Thierry Redinge629b0d2019-03-21 19:10:03 +01001583 if (err < 0) {
Laurentiu Tudoref135222020-04-03 13:43:03 +03001584 debug("failed to update %s property for node %s: %s\n",
1585 prop_name, node, fdt_strerror(err));
Thierry Redinge629b0d2019-03-21 19:10:03 +01001586 return err;
1587 }
1588
1589 return 0;
1590}
1591
Simon Glass37604392021-12-16 20:59:35 -07001592/* TODO(sjg@chromium.org): This function should not be weak */
Marek Vasutedeb6542020-04-11 21:18:59 +02001593__weak int fdtdec_board_setup(const void *fdt_blob)
1594{
1595 return 0;
1596}
1597
Simon Glasse1d46fa2021-12-16 20:59:24 -07001598/**
1599 * setup_multi_dtb_fit() - locate the correct dtb from a FIT
1600 *
1601 * This supports the CONFIG_MULTI_DTB_FIT feature, looking for the dtb in a
1602 * supplied FIT
1603 *
1604 * It accepts the current value of gd->fdt_blob, which points to the FIT, then
1605 * updates that gd->fdt_blob, to point to the chosen dtb so that U-Boot uses the
1606 * correct one
1607 */
1608static void setup_multi_dtb_fit(void)
1609{
Simon Glasse1d46fa2021-12-16 20:59:24 -07001610 void *blob;
1611
1612 /*
1613 * Try and uncompress the blob.
1614 * Unfortunately there is no way to know how big the input blob really
1615 * is. So let us set the maximum input size arbitrarily high. 16MB
1616 * ought to be more than enough for packed DTBs.
1617 */
1618 if (uncompress_blob(gd->fdt_blob, 0x1000000, &blob) == 0)
1619 gd->fdt_blob = blob;
1620
1621 /*
1622 * Check if blob is a FIT images containings DTBs.
1623 * If so, pick the most relevant
1624 */
1625 blob = locate_dtb_in_fit(gd->fdt_blob);
1626 if (blob) {
Simon Glass69daf5a2021-12-16 20:59:25 -07001627 gd_set_multi_dtb_fit(gd->fdt_blob);
Simon Glasse1d46fa2021-12-16 20:59:24 -07001628 gd->fdt_blob = blob;
Simon Glassbed6bc72021-12-16 20:59:33 -07001629 gd->fdt_src = FDTSRC_FIT;
Simon Glasse1d46fa2021-12-16 20:59:24 -07001630 }
Simon Glasse1d46fa2021-12-16 20:59:24 -07001631}
1632
Simon Glassa0877672015-02-27 22:06:35 -07001633int fdtdec_setup(void)
Simon Glass26b78b22015-02-27 22:06:34 -07001634{
Marek Vasutedeb6542020-04-11 21:18:59 +02001635 int ret;
Simon Glass2a3789b2021-12-16 20:59:30 -07001636
1637 /* The devicetree is typically appended to U-Boot */
Simon Glassbed6bc72021-12-16 20:59:33 -07001638 if (IS_ENABLED(CONFIG_OF_SEPARATE)) {
Simon Glass28b76512021-12-16 20:59:31 -07001639 gd->fdt_blob = fdt_find_separate();
Simon Glassbed6bc72021-12-16 20:59:33 -07001640 gd->fdt_src = FDTSRC_SEPARATE;
1641 } else { /* embed dtb in ELF file for testing / development */
Simon Glass28b76512021-12-16 20:59:31 -07001642 gd->fdt_blob = dtb_dt_embedded();
Simon Glassbed6bc72021-12-16 20:59:33 -07001643 gd->fdt_src = FDTSRC_EMBED;
1644 }
Simon Glass28b76512021-12-16 20:59:31 -07001645
1646 /* Allow the board to override the fdt address. */
1647 if (IS_ENABLED(CONFIG_OF_BOARD)) {
Simon Glass2a3789b2021-12-16 20:59:30 -07001648 gd->fdt_blob = board_fdt_blob_setup(&ret);
1649 if (ret)
1650 return ret;
Simon Glassbed6bc72021-12-16 20:59:33 -07001651 gd->fdt_src = FDTSRC_BOARD;
Simon Glass2a3789b2021-12-16 20:59:30 -07001652 }
1653
Simon Glassbed6bc72021-12-16 20:59:33 -07001654 /* Allow the early environment to override the fdt address */
Simon Glassbcafa8c2021-12-16 20:59:28 -07001655 if (!IS_ENABLED(CONFIG_SPL_BUILD)) {
Simon Glassbed6bc72021-12-16 20:59:33 -07001656 ulong addr;
1657
1658 addr = env_get_hex("fdtcontroladdr", 0);
1659 if (addr) {
1660 gd->fdt_blob = map_sysmem(addr, 0);
1661 gd->fdt_src = FDTSRC_ENV;
1662 }
Simon Glassbcafa8c2021-12-16 20:59:28 -07001663 }
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001664
Simon Glasse1d46fa2021-12-16 20:59:24 -07001665 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT))
1666 setup_multi_dtb_fit();
Jean-Jacques Hiblota2fee162017-09-15 12:57:32 +02001667
Marek Vasutedeb6542020-04-11 21:18:59 +02001668 ret = fdtdec_prepare_fdt();
1669 if (!ret)
1670 ret = fdtdec_board_setup(gd->fdt_blob);
1671 return ret;
Simon Glass26b78b22015-02-27 22:06:34 -07001672}
1673
Jean-Jacques Hiblot7c530e32018-12-07 14:50:52 +01001674int fdtdec_resetup(int *rescan)
1675{
1676 void *fdt_blob;
1677
1678 /*
1679 * If the current DTB is part of a compressed FIT image,
1680 * try to locate the best match from the uncompressed
1681 * FIT image stillpresent there. Save the time and space
1682 * required to uncompress it again.
1683 */
Simon Glass69daf5a2021-12-16 20:59:25 -07001684 if (gd_multi_dtb_fit()) {
1685 fdt_blob = locate_dtb_in_fit(gd_multi_dtb_fit());
Jean-Jacques Hiblot7c530e32018-12-07 14:50:52 +01001686
1687 if (fdt_blob == gd->fdt_blob) {
1688 /*
1689 * The best match did not change. no need to tear down
1690 * the DM and rescan the fdt.
1691 */
1692 *rescan = 0;
1693 return 0;
1694 }
1695
1696 *rescan = 1;
1697 gd->fdt_blob = fdt_blob;
1698 return fdtdec_prepare_fdt();
1699 }
1700
1701 /*
1702 * If multi_dtb_fit is NULL, it means that blob appended to u-boot is
1703 * not a FIT image containings DTB, but a single DTB. There is no need
1704 * to teard down DM and rescan the DT in this case.
1705 */
1706 *rescan = 0;
1707 return 0;
1708}
Jean-Jacques Hiblot7c530e32018-12-07 14:50:52 +01001709
Michael Prattfa28d142018-06-11 13:07:09 -06001710int fdtdec_decode_ram_size(const void *blob, const char *area, int board_id,
Masahiro Yamadaf7ed78b2020-06-26 15:13:33 +09001711 phys_addr_t *basep, phys_size_t *sizep,
1712 struct bd_info *bd)
Michael Prattfa28d142018-06-11 13:07:09 -06001713{
1714 int addr_cells, size_cells;
1715 const u32 *cell, *end;
1716 u64 total_size, size, addr;
1717 int node, child;
1718 bool auto_size;
1719 int bank;
1720 int len;
1721
1722 debug("%s: board_id=%d\n", __func__, board_id);
1723 if (!area)
1724 area = "/memory";
1725 node = fdt_path_offset(blob, area);
1726 if (node < 0) {
1727 debug("No %s node found\n", area);
1728 return -ENOENT;
1729 }
1730
1731 cell = fdt_getprop(blob, node, "reg", &len);
1732 if (!cell) {
1733 debug("No reg property found\n");
1734 return -ENOENT;
1735 }
1736
1737 addr_cells = fdt_address_cells(blob, node);
1738 size_cells = fdt_size_cells(blob, node);
1739
1740 /* Check the board id and mask */
1741 for (child = fdt_first_subnode(blob, node);
1742 child >= 0;
1743 child = fdt_next_subnode(blob, child)) {
1744 int match_mask, match_value;
1745
1746 match_mask = fdtdec_get_int(blob, child, "match-mask", -1);
1747 match_value = fdtdec_get_int(blob, child, "match-value", -1);
1748
1749 if (match_value >= 0 &&
1750 ((board_id & match_mask) == match_value)) {
1751 /* Found matching mask */
1752 debug("Found matching mask %d\n", match_mask);
1753 node = child;
1754 cell = fdt_getprop(blob, node, "reg", &len);
1755 if (!cell) {
1756 debug("No memory-banks property found\n");
1757 return -EINVAL;
1758 }
1759 break;
1760 }
1761 }
1762 /* Note: if no matching subnode was found we use the parent node */
1763
1764 if (bd) {
1765 memset(bd->bi_dram, '\0', sizeof(bd->bi_dram[0]) *
1766 CONFIG_NR_DRAM_BANKS);
1767 }
1768
1769 auto_size = fdtdec_get_bool(blob, node, "auto-size");
1770
1771 total_size = 0;
1772 end = cell + len / 4 - addr_cells - size_cells;
1773 debug("cell at %p, end %p\n", cell, end);
1774 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
1775 if (cell > end)
1776 break;
1777 addr = 0;
1778 if (addr_cells == 2)
1779 addr += (u64)fdt32_to_cpu(*cell++) << 32UL;
1780 addr += fdt32_to_cpu(*cell++);
1781 if (bd)
1782 bd->bi_dram[bank].start = addr;
1783 if (basep && !bank)
1784 *basep = (phys_addr_t)addr;
1785
1786 size = 0;
1787 if (size_cells == 2)
1788 size += (u64)fdt32_to_cpu(*cell++) << 32UL;
1789 size += fdt32_to_cpu(*cell++);
1790
1791 if (auto_size) {
1792 u64 new_size;
1793
Masahiro Yamadac7570a32018-08-06 20:47:40 +09001794 debug("Auto-sizing %llx, size %llx: ", addr, size);
Michael Prattfa28d142018-06-11 13:07:09 -06001795 new_size = get_ram_size((long *)(uintptr_t)addr, size);
1796 if (new_size == size) {
1797 debug("OK\n");
1798 } else {
Masahiro Yamadac7570a32018-08-06 20:47:40 +09001799 debug("sized to %llx\n", new_size);
Michael Prattfa28d142018-06-11 13:07:09 -06001800 size = new_size;
1801 }
1802 }
1803
1804 if (bd)
1805 bd->bi_dram[bank].size = size;
1806 total_size += size;
1807 }
1808
Masahiro Yamadac7570a32018-08-06 20:47:40 +09001809 debug("Memory size %llu\n", total_size);
Michael Prattfa28d142018-06-11 13:07:09 -06001810 if (sizep)
1811 *sizep = (phys_size_t)total_size;
1812
1813 return 0;
1814}
Michael Prattfa28d142018-06-11 13:07:09 -06001815
Simon Glass26b78b22015-02-27 22:06:34 -07001816#endif /* !USE_HOSTCC */