blob: 79915b59bdffe99557c48ab29abbd7620c721695 [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Simon Glassb5220bc2011-10-24 19:15:32 +00002/*
3 * Copyright (c) 2011 The Chromium OS Authors.
Simon Glassb5220bc2011-10-24 19:15:32 +00004 */
5
Heiko Schocher29a23f92014-03-03 12:19:30 +01006#ifndef USE_HOSTCC
Simon Glassb5220bc2011-10-24 19:15:32 +00007#include <common.h>
Jean-Jacques Hiblot035d6402017-09-15 12:57:31 +02008#include <boot_fit.h>
Simon Glassfcc0a872015-11-29 13:17:54 -07009#include <dm.h>
Simon Glassb7e0d732017-05-18 20:09:02 -060010#include <dm/of_extra.h>
Jean-Jacques Hiblot035d6402017-09-15 12:57:31 +020011#include <errno.h>
12#include <fdtdec.h>
13#include <fdt_support.h>
Heinrich Schuchardtf980c992018-11-18 17:58:50 +010014#include <mapmem.h>
Masahiro Yamadab08c8c42018-03-05 01:20:11 +090015#include <linux/libfdt.h>
Jean-Jacques Hiblot035d6402017-09-15 12:57:31 +020016#include <serial.h>
17#include <asm/sections.h>
Simon Glass5c33c9f2014-07-23 06:55:09 -060018#include <linux/ctype.h>
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +020019#include <linux/lzo.h>
Simon Glassb5220bc2011-10-24 19:15:32 +000020
21DECLARE_GLOBAL_DATA_PTR;
22
23/*
24 * Here are the type we know about. One day we might allow drivers to
25 * register. For now we just put them here. The COMPAT macro allows us to
26 * turn this into a sparse list later, and keeps the ID with the name.
Simon Glass01a227d2016-06-19 17:33:13 -060027 *
28 * NOTE: This list is basically a TODO list for things that need to be
29 * converted to driver model. So don't add new things here unless there is a
30 * good reason why driver-model conversion is infeasible. Examples include
31 * things which are used before driver model is available.
Simon Glassb5220bc2011-10-24 19:15:32 +000032 */
33#define COMPAT(id, name) name
34static const char * const compat_names[COMPAT_COUNT] = {
Simon Glassf88fe2d2012-02-27 10:52:34 +000035 COMPAT(UNKNOWN, "<none>"),
Jimmy Zhang0e35ad02012-04-02 13:18:52 +000036 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
37 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
Jim Lin312693c2012-07-29 20:53:29 +000038 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
Thierry Reding79c7a902014-12-09 22:25:09 -070039 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
Tom Warren7aaa5a62015-03-04 16:36:00 -070040 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
Hatim RVcc9fe332012-12-11 00:52:46 +000041 COMPAT(SMSC_LAN9215, "smsc,lan9215"),
42 COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
Rajeshwari Shinde6abd1622013-01-07 23:35:05 +000043 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
Vivek Gautam108b85b2013-09-14 14:02:48 +053044 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
Akshay Saraswat618766c2013-02-25 01:13:01 +000045 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
Piotr Wilczekde461c52014-03-07 14:59:39 +010046 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
Jaehoon Chung7d3ca0f2014-05-16 13:59:51 +090047 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
Simon Glassbb8215f2013-03-11 06:08:08 +000048 COMPAT(GENERIC_SPI_FLASH, "spi-flash"),
Ajay Kumar45c480c2014-09-05 16:53:33 +053049 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
Simon Glass77f9b1f2014-11-12 22:42:21 -070050 COMPAT(INTEL_MICROCODE, "intel,microcode"),
Bin Mengc89ada02015-02-05 23:42:26 +080051 COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
Marek Vasut6ab00db2015-07-25 19:33:56 +020052 COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
Marek Vasut129adf52015-07-25 10:48:14 +020053 COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"),
Marek Vasutef4b01b2015-12-05 19:28:44 +010054 COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"),
Simon Glass39ea0ee2016-06-19 17:33:14 -060055 COMPAT(INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"),
56 COMPAT(INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"),
57 COMPAT(INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"),
Boris Brezillon4ccae812016-06-15 21:09:23 +020058 COMPAT(COMPAT_SUNXI_NAND, "allwinner,sun4i-a10-nand"),
Ley Foon Tane11b5e82017-04-05 17:32:47 +080059 COMPAT(ALTERA_SOCFPGA_CLK, "altr,clk-mgr"),
60 COMPAT(ALTERA_SOCFPGA_PINCTRL_SINGLE, "pinctrl-single"),
61 COMPAT(ALTERA_SOCFPGA_H2F_BRG, "altr,socfpga-hps2fpga-bridge"),
62 COMPAT(ALTERA_SOCFPGA_LWH2F_BRG, "altr,socfpga-lwhps2fpga-bridge"),
63 COMPAT(ALTERA_SOCFPGA_F2H_BRG, "altr,socfpga-fpga2hps-bridge"),
64 COMPAT(ALTERA_SOCFPGA_F2SDR0, "altr,socfpga-fpga2sdram0-bridge"),
65 COMPAT(ALTERA_SOCFPGA_F2SDR1, "altr,socfpga-fpga2sdram1-bridge"),
66 COMPAT(ALTERA_SOCFPGA_F2SDR2, "altr,socfpga-fpga2sdram2-bridge"),
Tien Fong Cheeeb57c0b2017-09-25 16:40:03 +080067 COMPAT(ALTERA_SOCFPGA_FPGA0, "altr,socfpga-a10-fpga-mgr"),
68 COMPAT(ALTERA_SOCFPGA_NOC, "altr,socfpga-a10-noc"),
Marek Vasut19c8fc72018-05-12 11:56:10 +020069 COMPAT(ALTERA_SOCFPGA_CLK_INIT, "altr,socfpga-a10-clk-init")
Simon Glassb5220bc2011-10-24 19:15:32 +000070};
71
Simon Glassa53f4a22012-01-17 08:20:50 +000072const char *fdtdec_get_compatible(enum fdt_compat_id id)
73{
74 /* We allow reading of the 'unknown' ID for testing purposes */
75 assert(id >= 0 && id < COMPAT_COUNT);
76 return compat_names[id];
77}
78
Stephen Warren02464e32015-08-06 15:31:02 -060079fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +010080 const char *prop_name, int index, int na,
81 int ns, fdt_size_t *sizep,
82 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -060083{
84 const fdt32_t *prop, *prop_end;
85 const fdt32_t *prop_addr, *prop_size, *prop_after_size;
86 int len;
87 fdt_addr_t addr;
88
89 debug("%s: %s: ", __func__, prop_name);
90
Stephen Warren02464e32015-08-06 15:31:02 -060091 prop = fdt_getprop(blob, node, prop_name, &len);
92 if (!prop) {
93 debug("(not found)\n");
94 return FDT_ADDR_T_NONE;
95 }
96 prop_end = prop + (len / sizeof(*prop));
97
98 prop_addr = prop + (index * (na + ns));
99 prop_size = prop_addr + na;
100 prop_after_size = prop_size + ns;
101 if (prop_after_size > prop_end) {
102 debug("(not enough data: expected >= %d cells, got %d cells)\n",
103 (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
104 return FDT_ADDR_T_NONE;
105 }
106
Vignesh R5efa1bf2017-03-20 10:04:38 +0530107#if CONFIG_IS_ENABLED(OF_TRANSLATE)
Stephen Warren6e06acb2016-08-05 09:47:51 -0600108 if (translate)
109 addr = fdt_translate_address(blob, node, prop_addr);
110 else
111#endif
112 addr = fdtdec_get_number(prop_addr, na);
Stephen Warren02464e32015-08-06 15:31:02 -0600113
114 if (sizep) {
115 *sizep = fdtdec_get_number(prop_size, ns);
Simon Glassfd30d2c2016-02-29 15:25:37 -0700116 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
117 (unsigned long long)*sizep);
Stephen Warren02464e32015-08-06 15:31:02 -0600118 } else {
Simon Glassfd30d2c2016-02-29 15:25:37 -0700119 debug("addr=%08llx\n", (unsigned long long)addr);
Stephen Warren02464e32015-08-06 15:31:02 -0600120 }
121
122 return addr;
123}
124
125fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
Mario Six2e386622018-01-15 11:07:35 +0100126 int node, const char *prop_name,
127 int index, fdt_size_t *sizep,
128 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600129{
130 int na, ns;
131
132 debug("%s: ", __func__);
133
134 na = fdt_address_cells(blob, parent);
135 if (na < 1) {
136 debug("(bad #address-cells)\n");
137 return FDT_ADDR_T_NONE;
138 }
139
140 ns = fdt_size_cells(blob, parent);
Przemyslaw Marczakff0a6352015-09-30 13:14:50 +0200141 if (ns < 0) {
Stephen Warren02464e32015-08-06 15:31:02 -0600142 debug("(bad #size-cells)\n");
143 return FDT_ADDR_T_NONE;
144 }
145
146 debug("na=%d, ns=%d, ", na, ns);
147
148 return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600149 ns, sizep, translate);
Stephen Warren02464e32015-08-06 15:31:02 -0600150}
151
152fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100153 const char *prop_name, int index,
154 fdt_size_t *sizep,
155 bool translate)
Stephen Warren02464e32015-08-06 15:31:02 -0600156{
157 int parent;
158
159 debug("%s: ", __func__);
160
161 parent = fdt_parent_offset(blob, node);
162 if (parent < 0) {
163 debug("(no parent found)\n");
164 return FDT_ADDR_T_NONE;
165 }
166
167 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
Stephen Warren6e06acb2016-08-05 09:47:51 -0600168 index, sizep, translate);
Stephen Warren02464e32015-08-06 15:31:02 -0600169}
170
Simon Glass4397a2a2013-03-19 04:58:51 +0000171fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100172 const char *prop_name, fdt_size_t *sizep)
Simon Glassb5220bc2011-10-24 19:15:32 +0000173{
Stephen Warrend93b9a02015-09-25 10:11:41 -0600174 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
175
Stephen Warren02464e32015-08-06 15:31:02 -0600176 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
177 sizeof(fdt_addr_t) / sizeof(fdt32_t),
Stephen Warren6e06acb2016-08-05 09:47:51 -0600178 ns, sizep, false);
Simon Glassb5220bc2011-10-24 19:15:32 +0000179}
180
Mario Six2e386622018-01-15 11:07:35 +0100181fdt_addr_t fdtdec_get_addr(const void *blob, int node, const char *prop_name)
Simon Glass4397a2a2013-03-19 04:58:51 +0000182{
183 return fdtdec_get_addr_size(blob, node, prop_name, NULL);
184}
185
Sekhar Norid50d6812018-12-06 15:40:08 +0530186#if CONFIG_IS_ENABLED(PCI) && defined(CONFIG_DM_PCI)
Bin Menga62e84d2014-12-31 16:05:11 +0800187int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type,
Mario Six2e386622018-01-15 11:07:35 +0100188 const char *prop_name, struct fdt_pci_addr *addr)
Bin Menga62e84d2014-12-31 16:05:11 +0800189{
190 const u32 *cell;
191 int len;
192 int ret = -ENOENT;
193
194 debug("%s: %s: ", __func__, prop_name);
195
196 /*
197 * If we follow the pci bus bindings strictly, we should check
198 * the value of the node's parent node's #address-cells and
199 * #size-cells. They need to be 3 and 2 accordingly. However,
200 * for simplicity we skip the check here.
201 */
202 cell = fdt_getprop(blob, node, prop_name, &len);
203 if (!cell)
204 goto fail;
205
206 if ((len % FDT_PCI_REG_SIZE) == 0) {
207 int num = len / FDT_PCI_REG_SIZE;
208 int i;
209
210 for (i = 0; i < num; i++) {
211 debug("pci address #%d: %08lx %08lx %08lx\n", i,
Stephen Warren4ea52432015-10-02 17:44:06 -0600212 (ulong)fdt32_to_cpu(cell[0]),
213 (ulong)fdt32_to_cpu(cell[1]),
214 (ulong)fdt32_to_cpu(cell[2]));
215 if ((fdt32_to_cpu(*cell) & type) == type) {
216 addr->phys_hi = fdt32_to_cpu(cell[0]);
217 addr->phys_mid = fdt32_to_cpu(cell[1]);
218 addr->phys_lo = fdt32_to_cpu(cell[1]);
Bin Menga62e84d2014-12-31 16:05:11 +0800219 break;
Bin Menga62e84d2014-12-31 16:05:11 +0800220 }
Mario Sixb79221a2018-01-15 11:07:36 +0100221
222 cell += (FDT_PCI_ADDR_CELLS +
223 FDT_PCI_SIZE_CELLS);
Bin Menga62e84d2014-12-31 16:05:11 +0800224 }
225
Simon Glass106cce92015-03-05 12:25:19 -0700226 if (i == num) {
227 ret = -ENXIO;
Bin Menga62e84d2014-12-31 16:05:11 +0800228 goto fail;
Simon Glass106cce92015-03-05 12:25:19 -0700229 }
Bin Menga62e84d2014-12-31 16:05:11 +0800230
231 return 0;
Bin Menga62e84d2014-12-31 16:05:11 +0800232 }
233
Mario Sixb79221a2018-01-15 11:07:36 +0100234 ret = -EINVAL;
235
Bin Menga62e84d2014-12-31 16:05:11 +0800236fail:
237 debug("(not found)\n");
238 return ret;
239}
240
241int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
242{
243 const char *list, *end;
244 int len;
245
246 list = fdt_getprop(blob, node, "compatible", &len);
247 if (!list)
248 return -ENOENT;
249
250 end = list + len;
251 while (list < end) {
Bin Menga62e84d2014-12-31 16:05:11 +0800252 len = strlen(list);
253 if (len >= strlen("pciVVVV,DDDD")) {
Mario Sixb79221a2018-01-15 11:07:36 +0100254 char *s = strstr(list, "pci");
Bin Menga62e84d2014-12-31 16:05:11 +0800255
256 /*
257 * check if the string is something like pciVVVV,DDDD.RR
258 * or just pciVVVV,DDDD
259 */
260 if (s && s[7] == ',' &&
261 (s[12] == '.' || s[12] == 0)) {
262 s += 3;
263 *vendor = simple_strtol(s, NULL, 16);
264
265 s += 5;
266 *device = simple_strtol(s, NULL, 16);
267
268 return 0;
269 }
Bin Menga62e84d2014-12-31 16:05:11 +0800270 }
Bin Mengbc6351e2015-08-20 06:40:25 -0700271 list += (len + 1);
Bin Menga62e84d2014-12-31 16:05:11 +0800272 }
273
274 return -ENOENT;
275}
276
Simon Glassfcc0a872015-11-29 13:17:54 -0700277int fdtdec_get_pci_bar32(struct udevice *dev, struct fdt_pci_addr *addr,
278 u32 *bar)
Bin Menga62e84d2014-12-31 16:05:11 +0800279{
Bin Menga62e84d2014-12-31 16:05:11 +0800280 int barnum;
Bin Menga62e84d2014-12-31 16:05:11 +0800281
282 /* extract the bar number from fdt_pci_addr */
283 barnum = addr->phys_hi & 0xff;
Mario Sixb79221a2018-01-15 11:07:36 +0100284 if (barnum < PCI_BASE_ADDRESS_0 || barnum > PCI_CARDBUS_CIS)
Bin Menga62e84d2014-12-31 16:05:11 +0800285 return -EINVAL;
286
287 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
Simon Glassfcc0a872015-11-29 13:17:54 -0700288 *bar = dm_pci_read_bar32(dev, barnum);
Bin Menga62e84d2014-12-31 16:05:11 +0800289
290 return 0;
291}
292#endif
293
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000294uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100295 uint64_t default_val)
Che-Liang Chiouaadef0a2012-10-25 16:31:05 +0000296{
297 const uint64_t *cell64;
298 int length;
299
300 cell64 = fdt_getprop(blob, node, prop_name, &length);
301 if (!cell64 || length < sizeof(*cell64))
302 return default_val;
303
304 return fdt64_to_cpu(*cell64);
305}
306
Simon Glassf88fe2d2012-02-27 10:52:34 +0000307int fdtdec_get_is_enabled(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000308{
309 const char *cell;
310
Simon Glassf88fe2d2012-02-27 10:52:34 +0000311 /*
312 * It should say "okay", so only allow that. Some fdts use "ok" but
313 * this is a bug. Please fix your device tree source file. See here
314 * for discussion:
315 *
316 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
317 */
Simon Glassb5220bc2011-10-24 19:15:32 +0000318 cell = fdt_getprop(blob, node, "status", NULL);
319 if (cell)
Mario Sixb79221a2018-01-15 11:07:36 +0100320 return strcmp(cell, "okay") == 0;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000321 return 1;
Simon Glassb5220bc2011-10-24 19:15:32 +0000322}
323
Gerald Van Baren7cde3972012-11-12 23:13:54 -0500324enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
Simon Glassb5220bc2011-10-24 19:15:32 +0000325{
326 enum fdt_compat_id id;
327
328 /* Search our drivers */
329 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
Mario Sixb79221a2018-01-15 11:07:36 +0100330 if (fdt_node_check_compatible(blob, node,
331 compat_names[id]) == 0)
Simon Glassb5220bc2011-10-24 19:15:32 +0000332 return id;
333 return COMPAT_UNKNOWN;
334}
335
Mario Six2e386622018-01-15 11:07:35 +0100336int fdtdec_next_compatible(const void *blob, int node, enum fdt_compat_id id)
Simon Glassb5220bc2011-10-24 19:15:32 +0000337{
338 return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
339}
340
Simon Glass3ddecfc2012-04-02 13:18:42 +0000341int fdtdec_next_compatible_subnode(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100342 enum fdt_compat_id id, int *depthp)
Simon Glass3ddecfc2012-04-02 13:18:42 +0000343{
344 do {
345 node = fdt_next_node(blob, node, depthp);
346 } while (*depthp > 1);
347
348 /* If this is a direct subnode, and compatible, return it */
349 if (*depthp == 1 && 0 == fdt_node_check_compatible(
350 blob, node, compat_names[id]))
351 return node;
352
353 return -FDT_ERR_NOTFOUND;
354}
355
Mario Six2e386622018-01-15 11:07:35 +0100356int fdtdec_next_alias(const void *blob, const char *name, enum fdt_compat_id id,
357 int *upto)
Simon Glassb5220bc2011-10-24 19:15:32 +0000358{
359#define MAX_STR_LEN 20
360 char str[MAX_STR_LEN + 20];
361 int node, err;
362
363 /* snprintf() is not available */
364 assert(strlen(name) < MAX_STR_LEN);
365 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
Simon Glass00878472012-10-31 14:02:42 +0000366 node = fdt_path_offset(blob, str);
Simon Glassb5220bc2011-10-24 19:15:32 +0000367 if (node < 0)
368 return node;
369 err = fdt_node_check_compatible(blob, node, compat_names[id]);
370 if (err < 0)
371 return err;
Simon Glassf88fe2d2012-02-27 10:52:34 +0000372 if (err)
373 return -FDT_ERR_NOTFOUND;
374 (*upto)++;
375 return node;
Simon Glassb5220bc2011-10-24 19:15:32 +0000376}
377
Simon Glassa53f4a22012-01-17 08:20:50 +0000378int fdtdec_find_aliases_for_id(const void *blob, const char *name,
Mario Six2e386622018-01-15 11:07:35 +0100379 enum fdt_compat_id id, int *node_list,
380 int maxcount)
Simon Glassa53f4a22012-01-17 08:20:50 +0000381{
Simon Glassc6782272012-02-03 15:13:53 +0000382 memset(node_list, '\0', sizeof(*node_list) * maxcount);
383
384 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
385}
386
387/* TODO: Can we tighten this code up a little? */
388int fdtdec_add_aliases_for_id(const void *blob, const char *name,
Mario Six2e386622018-01-15 11:07:35 +0100389 enum fdt_compat_id id, int *node_list,
390 int maxcount)
Simon Glassc6782272012-02-03 15:13:53 +0000391{
Simon Glassa53f4a22012-01-17 08:20:50 +0000392 int name_len = strlen(name);
393 int nodes[maxcount];
394 int num_found = 0;
395 int offset, node;
396 int alias_node;
397 int count;
398 int i, j;
399
400 /* find the alias node if present */
401 alias_node = fdt_path_offset(blob, "/aliases");
402
403 /*
404 * start with nothing, and we can assume that the root node can't
405 * match
406 */
407 memset(nodes, '\0', sizeof(nodes));
408
409 /* First find all the compatible nodes */
410 for (node = count = 0; node >= 0 && count < maxcount;) {
411 node = fdtdec_next_compatible(blob, node, id);
412 if (node >= 0)
413 nodes[count++] = node;
414 }
415 if (node >= 0)
416 debug("%s: warning: maxcount exceeded with alias '%s'\n",
Mario Six2e386622018-01-15 11:07:35 +0100417 __func__, name);
Simon Glassa53f4a22012-01-17 08:20:50 +0000418
419 /* Now find all the aliases */
Simon Glassa53f4a22012-01-17 08:20:50 +0000420 for (offset = fdt_first_property_offset(blob, alias_node);
421 offset > 0;
422 offset = fdt_next_property_offset(blob, offset)) {
423 const struct fdt_property *prop;
424 const char *path;
425 int number;
426 int found;
427
428 node = 0;
429 prop = fdt_get_property_by_offset(blob, offset, NULL);
430 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
431 if (prop->len && 0 == strncmp(path, name, name_len))
432 node = fdt_path_offset(blob, prop->data);
433 if (node <= 0)
434 continue;
435
436 /* Get the alias number */
437 number = simple_strtoul(path + name_len, NULL, 10);
438 if (number < 0 || number >= maxcount) {
439 debug("%s: warning: alias '%s' is out of range\n",
Mario Six2e386622018-01-15 11:07:35 +0100440 __func__, path);
Simon Glassa53f4a22012-01-17 08:20:50 +0000441 continue;
442 }
443
444 /* Make sure the node we found is actually in our list! */
445 found = -1;
446 for (j = 0; j < count; j++)
447 if (nodes[j] == node) {
448 found = j;
449 break;
450 }
451
452 if (found == -1) {
453 debug("%s: warning: alias '%s' points to a node "
454 "'%s' that is missing or is not compatible "
455 " with '%s'\n", __func__, path,
456 fdt_get_name(blob, node, NULL),
457 compat_names[id]);
458 continue;
459 }
460
461 /*
462 * Add this node to our list in the right place, and mark
463 * it as done.
464 */
465 if (fdtdec_get_is_enabled(blob, node)) {
Simon Glassc6782272012-02-03 15:13:53 +0000466 if (node_list[number]) {
467 debug("%s: warning: alias '%s' requires that "
468 "a node be placed in the list in a "
469 "position which is already filled by "
470 "node '%s'\n", __func__, path,
471 fdt_get_name(blob, node, NULL));
472 continue;
473 }
Simon Glassa53f4a22012-01-17 08:20:50 +0000474 node_list[number] = node;
475 if (number >= num_found)
476 num_found = number + 1;
477 }
Simon Glassc6782272012-02-03 15:13:53 +0000478 nodes[found] = 0;
Simon Glassa53f4a22012-01-17 08:20:50 +0000479 }
480
481 /* Add any nodes not mentioned by an alias */
482 for (i = j = 0; i < maxcount; i++) {
483 if (!node_list[i]) {
484 for (; j < maxcount; j++)
485 if (nodes[j] &&
Mario Six2e386622018-01-15 11:07:35 +0100486 fdtdec_get_is_enabled(blob, nodes[j]))
Simon Glassa53f4a22012-01-17 08:20:50 +0000487 break;
488
489 /* Have we run out of nodes to add? */
490 if (j == maxcount)
491 break;
492
493 assert(!node_list[i]);
494 node_list[i] = nodes[j++];
495 if (i >= num_found)
496 num_found = i + 1;
497 }
498 }
499
500 return num_found;
501}
502
Simon Glass5c33c9f2014-07-23 06:55:09 -0600503int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
504 int *seqp)
505{
506 int base_len = strlen(base);
507 const char *find_name;
508 int find_namelen;
509 int prop_offset;
510 int aliases;
511
512 find_name = fdt_get_name(blob, offset, &find_namelen);
513 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
514
515 aliases = fdt_path_offset(blob, "/aliases");
516 for (prop_offset = fdt_first_property_offset(blob, aliases);
517 prop_offset > 0;
518 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
519 const char *prop;
520 const char *name;
521 const char *slash;
Simon Glassc4af6732015-06-23 15:39:08 -0600522 int len, val;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600523
524 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
525 debug(" - %s, %s\n", name, prop);
526 if (len < find_namelen || *prop != '/' || prop[len - 1] ||
527 strncmp(name, base, base_len))
528 continue;
529
530 slash = strrchr(prop, '/');
531 if (strcmp(slash + 1, find_name))
532 continue;
Simon Glassc4af6732015-06-23 15:39:08 -0600533 val = trailing_strtol(name);
534 if (val != -1) {
535 *seqp = val;
536 debug("Found seq %d\n", *seqp);
537 return 0;
Simon Glass5c33c9f2014-07-23 06:55:09 -0600538 }
539 }
540
541 debug("Not found\n");
542 return -ENOENT;
543}
544
Michal Simek003c9dc2019-01-31 16:30:58 +0100545int fdtdec_get_alias_highest_id(const void *blob, const char *base)
546{
547 int base_len = strlen(base);
548 int prop_offset;
549 int aliases;
550 int max = -1;
551
552 debug("Looking for highest alias id for '%s'\n", base);
553
554 aliases = fdt_path_offset(blob, "/aliases");
555 for (prop_offset = fdt_first_property_offset(blob, aliases);
556 prop_offset > 0;
557 prop_offset = fdt_next_property_offset(blob, prop_offset)) {
558 const char *prop;
559 const char *name;
560 int len, val;
561
562 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
563 debug(" - %s, %s\n", name, prop);
564 if (*prop != '/' || prop[len - 1] ||
565 strncmp(name, base, base_len))
566 continue;
567
568 val = trailing_strtol(name);
569 if (val > max) {
570 debug("Found seq %d\n", val);
571 max = val;
572 }
573 }
574
575 return max;
576}
577
Simon Glass3bc37a52015-10-17 19:41:14 -0600578const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
579{
580 int chosen_node;
581
582 if (!blob)
583 return NULL;
584 chosen_node = fdt_path_offset(blob, "/chosen");
585 return fdt_getprop(blob, chosen_node, name, NULL);
586}
587
Simon Glassaac07d42014-09-04 16:27:24 -0600588int fdtdec_get_chosen_node(const void *blob, const char *name)
589{
590 const char *prop;
Simon Glassaac07d42014-09-04 16:27:24 -0600591
Simon Glass3bc37a52015-10-17 19:41:14 -0600592 prop = fdtdec_get_chosen_prop(blob, name);
Simon Glassaac07d42014-09-04 16:27:24 -0600593 if (!prop)
594 return -FDT_ERR_NOTFOUND;
595 return fdt_path_offset(blob, prop);
596}
597
Simon Glass9a263e52012-03-28 10:08:24 +0000598int fdtdec_check_fdt(void)
599{
600 /*
601 * We must have an FDT, but we cannot panic() yet since the console
602 * is not ready. So for now, just assert(). Boards which need an early
603 * FDT (prior to console ready) will need to make their own
604 * arrangements and do their own checks.
605 */
606 assert(!fdtdec_prepare_fdt());
607 return 0;
608}
609
Simon Glassb5220bc2011-10-24 19:15:32 +0000610/*
611 * This function is a little odd in that it accesses global data. At some
612 * point if the architecture board.c files merge this will make more sense.
613 * Even now, it is common code.
614 */
Simon Glass9a263e52012-03-28 10:08:24 +0000615int fdtdec_prepare_fdt(void)
Simon Glassb5220bc2011-10-24 19:15:32 +0000616{
Simon Glassc309c2d2013-04-20 08:42:46 +0000617 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
618 fdt_check_header(gd->fdt_blob)) {
Simon Glass66312372015-02-27 22:06:32 -0700619#ifdef CONFIG_SPL_BUILD
620 puts("Missing DTB\n");
621#else
622 puts("No valid device tree binary found - please append one to U-Boot binary, use u-boot-dtb.bin or define CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n");
Simon Glasscb5f97f702015-06-23 15:39:09 -0600623# ifdef DEBUG
624 if (gd->fdt_blob) {
625 printf("fdt_blob=%p\n", gd->fdt_blob);
626 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
627 32, 0);
628 }
629# endif
Simon Glass66312372015-02-27 22:06:32 -0700630#endif
Simon Glass9a263e52012-03-28 10:08:24 +0000631 return -1;
632 }
Simon Glassb5220bc2011-10-24 19:15:32 +0000633 return 0;
634}
Simon Glassd17da652012-02-27 10:52:35 +0000635
636int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
637{
638 const u32 *phandle;
639 int lookup;
640
Simon Glass1cb23232012-07-12 05:25:01 +0000641 debug("%s: %s\n", __func__, prop_name);
Simon Glassd17da652012-02-27 10:52:35 +0000642 phandle = fdt_getprop(blob, node, prop_name, NULL);
643 if (!phandle)
644 return -FDT_ERR_NOTFOUND;
645
646 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
647 return lookup;
648}
649
650/**
651 * Look up a property in a node and check that it has a minimum length.
652 *
653 * @param blob FDT blob
654 * @param node node to examine
655 * @param prop_name name of property to find
656 * @param min_len minimum property length in bytes
657 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
658 found, or -FDT_ERR_BADLAYOUT if not enough data
659 * @return pointer to cell, which is only valid if err == 0
660 */
661static const void *get_prop_check_min_len(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100662 const char *prop_name, int min_len,
663 int *err)
Simon Glassd17da652012-02-27 10:52:35 +0000664{
665 const void *cell;
666 int len;
667
668 debug("%s: %s\n", __func__, prop_name);
669 cell = fdt_getprop(blob, node, prop_name, &len);
670 if (!cell)
671 *err = -FDT_ERR_NOTFOUND;
672 else if (len < min_len)
673 *err = -FDT_ERR_BADLAYOUT;
674 else
675 *err = 0;
676 return cell;
677}
678
679int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100680 u32 *array, int count)
Simon Glassd17da652012-02-27 10:52:35 +0000681{
682 const u32 *cell;
Mario Sixb79221a2018-01-15 11:07:36 +0100683 int err = 0;
Simon Glassd17da652012-02-27 10:52:35 +0000684
685 debug("%s: %s\n", __func__, prop_name);
686 cell = get_prop_check_min_len(blob, node, prop_name,
687 sizeof(u32) * count, &err);
688 if (!err) {
Mario Sixb79221a2018-01-15 11:07:36 +0100689 int i;
690
Simon Glassd17da652012-02-27 10:52:35 +0000691 for (i = 0; i < count; i++)
692 array[i] = fdt32_to_cpu(cell[i]);
693 }
694 return err;
695}
696
Simon Glassa9f04d42014-11-10 18:00:19 -0700697int fdtdec_get_int_array_count(const void *blob, int node,
698 const char *prop_name, u32 *array, int count)
699{
700 const u32 *cell;
701 int len, elems;
702 int i;
703
704 debug("%s: %s\n", __func__, prop_name);
705 cell = fdt_getprop(blob, node, prop_name, &len);
706 if (!cell)
707 return -FDT_ERR_NOTFOUND;
708 elems = len / sizeof(u32);
709 if (count > elems)
710 count = elems;
711 for (i = 0; i < count; i++)
712 array[i] = fdt32_to_cpu(cell[i]);
713
714 return count;
715}
716
Simon Glass96875e72012-04-02 13:18:41 +0000717const u32 *fdtdec_locate_array(const void *blob, int node,
718 const char *prop_name, int count)
719{
720 const u32 *cell;
721 int err;
722
723 cell = get_prop_check_min_len(blob, node, prop_name,
724 sizeof(u32) * count, &err);
725 return err ? NULL : cell;
726}
727
Simon Glassd17da652012-02-27 10:52:35 +0000728int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
729{
730 const s32 *cell;
731 int len;
732
733 debug("%s: %s\n", __func__, prop_name);
734 cell = fdt_getprop(blob, node, prop_name, &len);
735 return cell != NULL;
736}
Simon Glassed3ee5c2012-02-27 10:52:36 +0000737
Simon Glass57068a72015-01-05 20:05:26 -0700738int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
739 const char *list_name,
740 const char *cells_name,
741 int cell_count, int index,
742 struct fdtdec_phandle_args *out_args)
743{
744 const __be32 *list, *list_end;
745 int rc = 0, size, cur_index = 0;
746 uint32_t count = 0;
747 int node = -1;
748 int phandle;
749
750 /* Retrieve the phandle list property */
751 list = fdt_getprop(blob, src_node, list_name, &size);
752 if (!list)
753 return -ENOENT;
754 list_end = list + size / sizeof(*list);
755
756 /* Loop over the phandles until all the requested entry is found */
757 while (list < list_end) {
758 rc = -EINVAL;
759 count = 0;
760
761 /*
762 * If phandle is 0, then it is an empty entry with no
763 * arguments. Skip forward to the next entry.
764 */
765 phandle = be32_to_cpup(list++);
766 if (phandle) {
767 /*
768 * Find the provider node and parse the #*-cells
769 * property to determine the argument length.
770 *
771 * This is not needed if the cell count is hard-coded
772 * (i.e. cells_name not set, but cell_count is set),
773 * except when we're going to return the found node
774 * below.
775 */
776 if (cells_name || cur_index == index) {
777 node = fdt_node_offset_by_phandle(blob,
778 phandle);
779 if (!node) {
780 debug("%s: could not find phandle\n",
781 fdt_get_name(blob, src_node,
782 NULL));
783 goto err;
784 }
785 }
786
787 if (cells_name) {
788 count = fdtdec_get_int(blob, node, cells_name,
789 -1);
790 if (count == -1) {
791 debug("%s: could not get %s for %s\n",
792 fdt_get_name(blob, src_node,
793 NULL),
794 cells_name,
795 fdt_get_name(blob, node,
796 NULL));
797 goto err;
798 }
799 } else {
800 count = cell_count;
801 }
802
803 /*
804 * Make sure that the arguments actually fit in the
805 * remaining property data length
806 */
807 if (list + count > list_end) {
808 debug("%s: arguments longer than property\n",
809 fdt_get_name(blob, src_node, NULL));
810 goto err;
811 }
812 }
813
814 /*
815 * All of the error cases above bail out of the loop, so at
816 * this point, the parsing is successful. If the requested
817 * index matches, then fill the out_args structure and return,
818 * or return -ENOENT for an empty entry.
819 */
820 rc = -ENOENT;
821 if (cur_index == index) {
822 if (!phandle)
823 goto err;
824
825 if (out_args) {
826 int i;
827
828 if (count > MAX_PHANDLE_ARGS) {
829 debug("%s: too many arguments %d\n",
830 fdt_get_name(blob, src_node,
831 NULL), count);
832 count = MAX_PHANDLE_ARGS;
833 }
834 out_args->node = node;
835 out_args->args_count = count;
836 for (i = 0; i < count; i++) {
837 out_args->args[i] =
838 be32_to_cpup(list++);
839 }
840 }
841
842 /* Found it! return success */
843 return 0;
844 }
845
846 node = -1;
847 list += count;
848 cur_index++;
849 }
850
851 /*
852 * Result will be one of:
853 * -ENOENT : index is for empty phandle
854 * -EINVAL : parsing error on data
855 * [1..n] : Number of phandle (count mode; when index = -1)
856 */
857 rc = index < 0 ? cur_index : -ENOENT;
858 err:
859 return rc;
860}
861
Peng Fan1889a7e2016-02-01 13:31:15 +0800862int fdtdec_get_child_count(const void *blob, int node)
863{
864 int subnode;
865 int num = 0;
866
Simon Glassdf87e6b2016-10-02 17:59:29 -0600867 fdt_for_each_subnode(subnode, blob, node)
Peng Fan1889a7e2016-02-01 13:31:15 +0800868 num++;
869
870 return num;
871}
872
Anton Staffbed4d892012-04-17 09:01:28 +0000873int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100874 u8 *array, int count)
Anton Staffbed4d892012-04-17 09:01:28 +0000875{
876 const u8 *cell;
877 int err;
878
879 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
880 if (!err)
881 memcpy(array, cell, count);
882 return err;
883}
884
885const u8 *fdtdec_locate_byte_array(const void *blob, int node,
Mario Six2e386622018-01-15 11:07:35 +0100886 const char *prop_name, int count)
Anton Staffbed4d892012-04-17 09:01:28 +0000887{
888 const u8 *cell;
889 int err;
890
891 cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
892 if (err)
893 return NULL;
894 return cell;
895}
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000896
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000897int fdtdec_get_config_int(const void *blob, const char *prop_name,
Mario Six2e386622018-01-15 11:07:35 +0100898 int default_val)
Abhilash Kesavan09258f12012-10-25 16:30:58 +0000899{
900 int config_node;
901
902 debug("%s: %s\n", __func__, prop_name);
903 config_node = fdt_path_offset(blob, "/config");
904 if (config_node < 0)
905 return default_val;
906 return fdtdec_get_int(blob, config_node, prop_name, default_val);
907}
Simon Glass332ab0d2012-10-25 16:30:59 +0000908
Gabe Black79289c02012-10-25 16:31:04 +0000909int fdtdec_get_config_bool(const void *blob, const char *prop_name)
910{
911 int config_node;
912 const void *prop;
913
914 debug("%s: %s\n", __func__, prop_name);
915 config_node = fdt_path_offset(blob, "/config");
916 if (config_node < 0)
917 return 0;
918 prop = fdt_get_property(blob, config_node, prop_name, NULL);
919
920 return prop != NULL;
921}
922
Simon Glass332ab0d2012-10-25 16:30:59 +0000923char *fdtdec_get_config_string(const void *blob, const char *prop_name)
924{
925 const char *nodep;
926 int nodeoffset;
927 int len;
928
929 debug("%s: %s\n", __func__, prop_name);
930 nodeoffset = fdt_path_offset(blob, "/config");
931 if (nodeoffset < 0)
932 return NULL;
933
934 nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
935 if (!nodep)
936 return NULL;
937
938 return (char *)nodep;
939}
Simon Glassf20c4612012-10-25 16:31:00 +0000940
Simon Glass5f7bfdd2015-03-05 12:25:14 -0700941u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
Thierry Reding56f42242014-08-26 17:33:53 +0200942{
943 u64 number = 0;
944
945 while (cells--)
946 number = (number << 32) | fdt32_to_cpu(*ptr++);
947
948 return number;
949}
950
951int fdt_get_resource(const void *fdt, int node, const char *property,
952 unsigned int index, struct fdt_resource *res)
953{
954 const fdt32_t *ptr, *end;
955 int na, ns, len, parent;
956 unsigned int i = 0;
957
958 parent = fdt_parent_offset(fdt, node);
959 if (parent < 0)
960 return parent;
961
962 na = fdt_address_cells(fdt, parent);
963 ns = fdt_size_cells(fdt, parent);
964
965 ptr = fdt_getprop(fdt, node, property, &len);
966 if (!ptr)
967 return len;
968
969 end = ptr + len / sizeof(*ptr);
970
971 while (ptr + na + ns <= end) {
972 if (i == index) {
Mario Sixb79221a2018-01-15 11:07:36 +0100973 res->start = fdtdec_get_number(ptr, na);
974 res->end = res->start;
Thierry Reding56f42242014-08-26 17:33:53 +0200975 res->end += fdtdec_get_number(&ptr[na], ns) - 1;
976 return 0;
977 }
978
979 ptr += na + ns;
980 i++;
981 }
982
983 return -FDT_ERR_NOTFOUND;
984}
985
986int fdt_get_named_resource(const void *fdt, int node, const char *property,
987 const char *prop_names, const char *name,
988 struct fdt_resource *res)
989{
990 int index;
991
Simon Glassb02e4042016-10-02 17:59:28 -0600992 index = fdt_stringlist_search(fdt, node, prop_names, name);
Thierry Reding56f42242014-08-26 17:33:53 +0200993 if (index < 0)
994 return index;
995
996 return fdt_get_resource(fdt, node, property, index, res);
997}
Thierry Reding9f85eee2014-08-26 17:33:54 +0200998
Simon Glass12e67112015-04-14 21:03:21 -0600999static int decode_timing_property(const void *blob, int node, const char *name,
1000 struct timing_entry *result)
1001{
1002 int length, ret = 0;
1003 const u32 *prop;
1004
1005 prop = fdt_getprop(blob, node, name, &length);
1006 if (!prop) {
1007 debug("%s: could not find property %s\n",
1008 fdt_get_name(blob, node, NULL), name);
1009 return length;
1010 }
1011
1012 if (length == sizeof(u32)) {
1013 result->typ = fdtdec_get_int(blob, node, name, 0);
1014 result->min = result->typ;
1015 result->max = result->typ;
1016 } else {
1017 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
1018 }
1019
1020 return ret;
1021}
1022
1023int fdtdec_decode_display_timing(const void *blob, int parent, int index,
1024 struct display_timing *dt)
1025{
1026 int i, node, timings_node;
1027 u32 val = 0;
1028 int ret = 0;
1029
1030 timings_node = fdt_subnode_offset(blob, parent, "display-timings");
1031 if (timings_node < 0)
1032 return timings_node;
1033
1034 for (i = 0, node = fdt_first_subnode(blob, timings_node);
1035 node > 0 && i != index;
1036 node = fdt_next_subnode(blob, node))
1037 i++;
1038
1039 if (node < 0)
1040 return node;
1041
1042 memset(dt, 0, sizeof(*dt));
1043
1044 ret |= decode_timing_property(blob, node, "hback-porch",
1045 &dt->hback_porch);
1046 ret |= decode_timing_property(blob, node, "hfront-porch",
1047 &dt->hfront_porch);
1048 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
1049 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
1050 ret |= decode_timing_property(blob, node, "vback-porch",
1051 &dt->vback_porch);
1052 ret |= decode_timing_property(blob, node, "vfront-porch",
1053 &dt->vfront_porch);
1054 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
1055 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
1056 ret |= decode_timing_property(blob, node, "clock-frequency",
1057 &dt->pixelclock);
1058
1059 dt->flags = 0;
1060 val = fdtdec_get_int(blob, node, "vsync-active", -1);
1061 if (val != -1) {
1062 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
1063 DISPLAY_FLAGS_VSYNC_LOW;
1064 }
1065 val = fdtdec_get_int(blob, node, "hsync-active", -1);
1066 if (val != -1) {
1067 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
1068 DISPLAY_FLAGS_HSYNC_LOW;
1069 }
1070 val = fdtdec_get_int(blob, node, "de-active", -1);
1071 if (val != -1) {
1072 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
1073 DISPLAY_FLAGS_DE_LOW;
1074 }
1075 val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
1076 if (val != -1) {
1077 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
1078 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
1079 }
1080
1081 if (fdtdec_get_bool(blob, node, "interlaced"))
1082 dt->flags |= DISPLAY_FLAGS_INTERLACED;
1083 if (fdtdec_get_bool(blob, node, "doublescan"))
1084 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
1085 if (fdtdec_get_bool(blob, node, "doubleclk"))
1086 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
1087
Simon Glass04b9dd12016-05-05 07:28:21 -06001088 return ret;
Simon Glass12e67112015-04-14 21:03:21 -06001089}
1090
Marek Vasut3ebe09d2019-03-05 04:25:54 +01001091int fdtdec_setup_mem_size_base_fdt(const void *blob)
Nathan Rossi623f6012016-12-19 00:03:34 +10001092{
1093 int ret, mem;
1094 struct fdt_resource res;
1095
Marek Vasut3ebe09d2019-03-05 04:25:54 +01001096 mem = fdt_path_offset(blob, "/memory");
Nathan Rossi623f6012016-12-19 00:03:34 +10001097 if (mem < 0) {
1098 debug("%s: Missing /memory node\n", __func__);
1099 return -EINVAL;
1100 }
1101
Marek Vasut3ebe09d2019-03-05 04:25:54 +01001102 ret = fdt_get_resource(blob, mem, "reg", 0, &res);
Nathan Rossi623f6012016-12-19 00:03:34 +10001103 if (ret != 0) {
1104 debug("%s: Unable to decode first memory bank\n", __func__);
1105 return -EINVAL;
1106 }
1107
1108 gd->ram_size = (phys_size_t)(res.end - res.start + 1);
Siva Durga Prasad Paladugu1473b122018-07-16 15:56:10 +05301109 gd->ram_base = (unsigned long)res.start;
Simon Glassc69380f2017-05-27 07:38:13 -06001110 debug("%s: Initial DRAM size %llx\n", __func__,
1111 (unsigned long long)gd->ram_size);
Nathan Rossi623f6012016-12-19 00:03:34 +10001112
1113 return 0;
1114}
1115
Marek Vasut3ebe09d2019-03-05 04:25:54 +01001116int fdtdec_setup_mem_size_base(void)
1117{
1118 return fdtdec_setup_mem_size_base_fdt(gd->fdt_blob);
1119}
1120
Nathan Rossi623f6012016-12-19 00:03:34 +10001121#if defined(CONFIG_NR_DRAM_BANKS)
Jens Wiklander452bc122018-07-13 12:12:11 +02001122
Michal Simek658954c2018-10-03 15:53:52 +02001123static int get_next_memory_node(const void *blob, int mem)
Jens Wiklander452bc122018-07-13 12:12:11 +02001124{
Jens Wiklander452bc122018-07-13 12:12:11 +02001125 do {
Marek Vasut118f4d42019-03-05 04:25:55 +01001126 mem = fdt_node_offset_by_prop_value(blob, mem,
Michal Simek658954c2018-10-03 15:53:52 +02001127 "device_type", "memory", 7);
1128 } while (!fdtdec_get_is_enabled(blob, mem));
Jens Wiklander452bc122018-07-13 12:12:11 +02001129
1130 return mem;
1131}
1132
Marek Vasut118f4d42019-03-05 04:25:55 +01001133int fdtdec_setup_memory_banksize_fdt(const void *blob)
Nathan Rossi623f6012016-12-19 00:03:34 +10001134{
Michal Simek658954c2018-10-03 15:53:52 +02001135 int bank, ret, mem, reg = 0;
1136 struct fdt_resource res;
Nathan Rossi623f6012016-12-19 00:03:34 +10001137
Marek Vasut118f4d42019-03-05 04:25:55 +01001138 mem = get_next_memory_node(blob, -1);
Michal Simek658954c2018-10-03 15:53:52 +02001139 if (mem < 0) {
1140 debug("%s: Missing /memory node\n", __func__);
1141 return -EINVAL;
1142 }
Nathan Rossi623f6012016-12-19 00:03:34 +10001143
1144 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
Marek Vasut118f4d42019-03-05 04:25:55 +01001145 ret = fdt_get_resource(blob, mem, "reg", reg++, &res);
Michal Simek658954c2018-10-03 15:53:52 +02001146 if (ret == -FDT_ERR_NOTFOUND) {
Marek Vasut942ee092017-11-27 05:32:42 +01001147 reg = 0;
Marek Vasut118f4d42019-03-05 04:25:55 +01001148 mem = get_next_memory_node(blob, mem);
Michal Simek658954c2018-10-03 15:53:52 +02001149 if (mem == -FDT_ERR_NOTFOUND)
1150 break;
1151
Marek Vasut118f4d42019-03-05 04:25:55 +01001152 ret = fdt_get_resource(blob, mem, "reg", reg++, &res);
Michal Simek658954c2018-10-03 15:53:52 +02001153 if (ret == -FDT_ERR_NOTFOUND)
1154 break;
1155 }
1156 if (ret != 0) {
1157 return -EINVAL;
Marek Vasut942ee092017-11-27 05:32:42 +01001158 }
Nathan Rossi623f6012016-12-19 00:03:34 +10001159
1160 gd->bd->bi_dram[bank].start = (phys_addr_t)res.start;
1161 gd->bd->bi_dram[bank].size =
1162 (phys_size_t)(res.end - res.start + 1);
1163
1164 debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
1165 __func__, bank,
1166 (unsigned long long)gd->bd->bi_dram[bank].start,
1167 (unsigned long long)gd->bd->bi_dram[bank].size);
1168 }
1169
1170 return 0;
1171}
Marek Vasut118f4d42019-03-05 04:25:55 +01001172
1173int fdtdec_setup_memory_banksize(void)
1174{
1175 return fdtdec_setup_memory_banksize_fdt(gd->fdt_blob);
1176
1177}
Nathan Rossi623f6012016-12-19 00:03:34 +10001178#endif
1179
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001180#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1181# if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\
1182 CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO)
1183static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1184{
1185 size_t sz_out = CONFIG_SPL_MULTI_DTB_FIT_UNCOMPRESS_SZ;
1186 ulong sz_in = sz_src;
1187 void *dst;
1188 int rc;
1189
1190 if (CONFIG_IS_ENABLED(GZIP))
1191 if (gzip_parse_header(src, sz_in) < 0)
1192 return -1;
1193 if (CONFIG_IS_ENABLED(LZO))
1194 if (!lzop_is_valid_header(src))
1195 return -EBADMSG;
1196
1197 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) {
1198 dst = malloc(sz_out);
1199 if (!dst) {
1200 puts("uncompress_blob: Unable to allocate memory\n");
1201 return -ENOMEM;
1202 }
1203 } else {
1204# if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA)
1205 dst = (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR);
1206# else
1207 return -ENOTSUPP;
1208# endif
1209 }
1210
1211 if (CONFIG_IS_ENABLED(GZIP))
1212 rc = gunzip(dst, sz_out, (u8 *)src, &sz_in);
1213 else if (CONFIG_IS_ENABLED(LZO))
1214 rc = lzop_decompress(src, sz_in, dst, &sz_out);
1215
1216 if (rc < 0) {
1217 /* not a valid compressed blob */
1218 puts("uncompress_blob: Unable to uncompress\n");
1219 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC))
1220 free(dst);
1221 return -EBADMSG;
1222 }
1223 *dstp = dst;
1224 return 0;
1225}
1226# else
1227static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
1228{
Marek Vasut410d9b62018-10-18 20:37:05 +02001229 *dstp = (void *)src;
1230 return 0;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001231}
1232# endif
1233#endif
1234
Rob Clark3b595da2018-01-10 11:34:37 +01001235#if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
1236/*
1237 * For CONFIG_OF_SEPARATE, the board may optionally implement this to
1238 * provide and/or fixup the fdt.
1239 */
1240__weak void *board_fdt_blob_setup(void)
1241{
1242 void *fdt_blob = NULL;
1243#ifdef CONFIG_SPL_BUILD
1244 /* FDT is at end of BSS unless it is in a different memory region */
1245 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
1246 fdt_blob = (ulong *)&_image_binary_end;
1247 else
1248 fdt_blob = (ulong *)&__bss_end;
1249#else
1250 /* FDT is at end of image */
1251 fdt_blob = (ulong *)&_end;
1252#endif
1253 return fdt_blob;
1254}
1255#endif
1256
Simon Glass08793612015-02-27 22:06:35 -07001257int fdtdec_setup(void)
Simon Glassb45122f2015-02-27 22:06:34 -07001258{
Masahiro Yamada0f925822015-08-12 07:31:55 +09001259#if CONFIG_IS_ENABLED(OF_CONTROL)
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001260# if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1261 void *fdt_blob;
1262# endif
Simon Glassb45122f2015-02-27 22:06:34 -07001263# ifdef CONFIG_OF_EMBED
1264 /* Get a pointer to the FDT */
Goldschmidt Simon9bd76b82017-11-21 12:29:56 +00001265# ifdef CONFIG_SPL_BUILD
1266 gd->fdt_blob = __dtb_dt_spl_begin;
1267# else
Simon Glassb45122f2015-02-27 22:06:34 -07001268 gd->fdt_blob = __dtb_dt_begin;
Goldschmidt Simon9bd76b82017-11-21 12:29:56 +00001269# endif
Rob Clark3b595da2018-01-10 11:34:37 +01001270# elif defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
Alex Deymo82f766d2017-04-02 01:25:20 -07001271 /* Allow the board to override the fdt address. */
1272 gd->fdt_blob = board_fdt_blob_setup();
Simon Glassb45122f2015-02-27 22:06:34 -07001273# elif defined(CONFIG_OF_HOSTFILE)
1274 if (sandbox_read_fdt_from_file()) {
1275 puts("Failed to read control FDT\n");
1276 return -1;
1277 }
1278# endif
1279# ifndef CONFIG_SPL_BUILD
1280 /* Allow the early environment to override the fdt address */
Thomas Fitzsimmons894c3ad2018-06-08 17:59:45 -04001281# if CONFIG_IS_ENABLED(OF_PRIOR_STAGE)
1282 gd->fdt_blob = (void *)prior_stage_fdt_address;
1283# else
Heinrich Schuchardtf980c992018-11-18 17:58:50 +01001284 gd->fdt_blob = map_sysmem
1285 (env_get_ulong("fdtcontroladdr", 16,
1286 (unsigned long)map_to_sysmem(gd->fdt_blob)), 0);
Thomas Fitzsimmons894c3ad2018-06-08 17:59:45 -04001287# endif
Simon Glassb45122f2015-02-27 22:06:34 -07001288# endif
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001289
1290# if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1291 /*
1292 * Try and uncompress the blob.
1293 * Unfortunately there is no way to know how big the input blob really
1294 * is. So let us set the maximum input size arbitrarily high. 16MB
1295 * ought to be more than enough for packed DTBs.
1296 */
1297 if (uncompress_blob(gd->fdt_blob, 0x1000000, &fdt_blob) == 0)
1298 gd->fdt_blob = fdt_blob;
1299
1300 /*
1301 * Check if blob is a FIT images containings DTBs.
1302 * If so, pick the most relevant
1303 */
1304 fdt_blob = locate_dtb_in_fit(gd->fdt_blob);
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001305 if (fdt_blob) {
1306 gd->multi_dtb_fit = gd->fdt_blob;
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001307 gd->fdt_blob = fdt_blob;
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001308 }
1309
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001310# endif
Simon Glassb45122f2015-02-27 22:06:34 -07001311#endif
Jean-Jacques Hiblot2f57c952017-09-15 12:57:32 +02001312
Simon Glass08793612015-02-27 22:06:35 -07001313 return fdtdec_prepare_fdt();
Simon Glassb45122f2015-02-27 22:06:34 -07001314}
1315
Jean-Jacques Hiblotf1d2bc92018-12-07 14:50:52 +01001316#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
1317int fdtdec_resetup(int *rescan)
1318{
1319 void *fdt_blob;
1320
1321 /*
1322 * If the current DTB is part of a compressed FIT image,
1323 * try to locate the best match from the uncompressed
1324 * FIT image stillpresent there. Save the time and space
1325 * required to uncompress it again.
1326 */
1327 if (gd->multi_dtb_fit) {
1328 fdt_blob = locate_dtb_in_fit(gd->multi_dtb_fit);
1329
1330 if (fdt_blob == gd->fdt_blob) {
1331 /*
1332 * The best match did not change. no need to tear down
1333 * the DM and rescan the fdt.
1334 */
1335 *rescan = 0;
1336 return 0;
1337 }
1338
1339 *rescan = 1;
1340 gd->fdt_blob = fdt_blob;
1341 return fdtdec_prepare_fdt();
1342 }
1343
1344 /*
1345 * If multi_dtb_fit is NULL, it means that blob appended to u-boot is
1346 * not a FIT image containings DTB, but a single DTB. There is no need
1347 * to teard down DM and rescan the DT in this case.
1348 */
1349 *rescan = 0;
1350 return 0;
1351}
1352#endif
1353
Michael Pratt90c08fa2018-06-11 13:07:09 -06001354#ifdef CONFIG_NR_DRAM_BANKS
1355int fdtdec_decode_ram_size(const void *blob, const char *area, int board_id,
1356 phys_addr_t *basep, phys_size_t *sizep, bd_t *bd)
1357{
1358 int addr_cells, size_cells;
1359 const u32 *cell, *end;
1360 u64 total_size, size, addr;
1361 int node, child;
1362 bool auto_size;
1363 int bank;
1364 int len;
1365
1366 debug("%s: board_id=%d\n", __func__, board_id);
1367 if (!area)
1368 area = "/memory";
1369 node = fdt_path_offset(blob, area);
1370 if (node < 0) {
1371 debug("No %s node found\n", area);
1372 return -ENOENT;
1373 }
1374
1375 cell = fdt_getprop(blob, node, "reg", &len);
1376 if (!cell) {
1377 debug("No reg property found\n");
1378 return -ENOENT;
1379 }
1380
1381 addr_cells = fdt_address_cells(blob, node);
1382 size_cells = fdt_size_cells(blob, node);
1383
1384 /* Check the board id and mask */
1385 for (child = fdt_first_subnode(blob, node);
1386 child >= 0;
1387 child = fdt_next_subnode(blob, child)) {
1388 int match_mask, match_value;
1389
1390 match_mask = fdtdec_get_int(blob, child, "match-mask", -1);
1391 match_value = fdtdec_get_int(blob, child, "match-value", -1);
1392
1393 if (match_value >= 0 &&
1394 ((board_id & match_mask) == match_value)) {
1395 /* Found matching mask */
1396 debug("Found matching mask %d\n", match_mask);
1397 node = child;
1398 cell = fdt_getprop(blob, node, "reg", &len);
1399 if (!cell) {
1400 debug("No memory-banks property found\n");
1401 return -EINVAL;
1402 }
1403 break;
1404 }
1405 }
1406 /* Note: if no matching subnode was found we use the parent node */
1407
1408 if (bd) {
1409 memset(bd->bi_dram, '\0', sizeof(bd->bi_dram[0]) *
1410 CONFIG_NR_DRAM_BANKS);
1411 }
1412
1413 auto_size = fdtdec_get_bool(blob, node, "auto-size");
1414
1415 total_size = 0;
1416 end = cell + len / 4 - addr_cells - size_cells;
1417 debug("cell at %p, end %p\n", cell, end);
1418 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
1419 if (cell > end)
1420 break;
1421 addr = 0;
1422 if (addr_cells == 2)
1423 addr += (u64)fdt32_to_cpu(*cell++) << 32UL;
1424 addr += fdt32_to_cpu(*cell++);
1425 if (bd)
1426 bd->bi_dram[bank].start = addr;
1427 if (basep && !bank)
1428 *basep = (phys_addr_t)addr;
1429
1430 size = 0;
1431 if (size_cells == 2)
1432 size += (u64)fdt32_to_cpu(*cell++) << 32UL;
1433 size += fdt32_to_cpu(*cell++);
1434
1435 if (auto_size) {
1436 u64 new_size;
1437
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001438 debug("Auto-sizing %llx, size %llx: ", addr, size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001439 new_size = get_ram_size((long *)(uintptr_t)addr, size);
1440 if (new_size == size) {
1441 debug("OK\n");
1442 } else {
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001443 debug("sized to %llx\n", new_size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001444 size = new_size;
1445 }
1446 }
1447
1448 if (bd)
1449 bd->bi_dram[bank].size = size;
1450 total_size += size;
1451 }
1452
Masahiro Yamadadee37fc2018-08-06 20:47:40 +09001453 debug("Memory size %llu\n", total_size);
Michael Pratt90c08fa2018-06-11 13:07:09 -06001454 if (sizep)
1455 *sizep = (phys_size_t)total_size;
1456
1457 return 0;
1458}
1459#endif /* CONFIG_NR_DRAM_BANKS */
1460
Simon Glassb45122f2015-02-27 22:06:34 -07001461#endif /* !USE_HOSTCC */