summaryrefslogtreecommitdiff
path: root/include/fdt_support.h
blob: 76ef5b70d785c6b00201bace3d037b7f2e2306d6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
/*
 * (C) Copyright 2007
 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#ifndef __FDT_SUPPORT_H
#define __FDT_SUPPORT_H

#ifdef CONFIG_OF_LIBFDT

#include <linux/libfdt.h>

u32 fdt_getprop_u32_default_node(const void *fdt, int off, int cell,
				const char *prop, const u32 dflt);
u32 fdt_getprop_u32_default(const void *fdt, const char *path,
				const char *prop, const u32 dflt);

/**
 * Add data to the root of the FDT before booting the OS.
 *
 * See doc/device-tree-bindings/root.txt
 *
 * @param fdt		FDT address in memory
 * @return 0 if ok, or -FDT_ERR_... on error
 */
int fdt_root(void *fdt);

/**
 * Add chosen data the FDT before booting the OS.
 *
 * In particular, this adds the kernel command line (bootargs) to the FDT.
 *
 * @param fdt		FDT address in memory
 * @return 0 if ok, or -FDT_ERR_... on error
 */
int fdt_chosen(void *fdt);

/**
 * Add initrd information to the FDT before booting the OS.
 *
 * @param fdt		FDT address in memory
 * @return 0 if ok, or -FDT_ERR_... on error
 */
int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end);

void do_fixup_by_path(void *fdt, const char *path, const char *prop,
		      const void *val, int len, int create);
void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,
			  u32 val, int create);

static inline void do_fixup_by_path_string(void *fdt, const char *path,
					   const char *prop, const char *status)
{
	do_fixup_by_path(fdt, path, prop, status, strlen(status) + 1, 1);
}

void do_fixup_by_prop(void *fdt,
		      const char *pname, const void *pval, int plen,
		      const char *prop, const void *val, int len,
		      int create);
void do_fixup_by_prop_u32(void *fdt,
			  const char *pname, const void *pval, int plen,
			  const char *prop, u32 val, int create);
void do_fixup_by_compat(void *fdt, const char *compat,
			const char *prop, const void *val, int len, int create);
void do_fixup_by_compat_u32(void *fdt, const char *compat,
			    const char *prop, u32 val, int create);
/**
 * Setup the memory node in the DT. Creates one if none was existing before.
 * Calls fdt_fixup_memory_banks() to populate a single reg pair covering the
 * whole memory.
 *
 * @param blob		FDT blob to update
 * @param start		Begin of DRAM mapping in physical memory
 * @param size		Size of the single memory bank
 * @return 0 if ok, or -1 or -FDT_ERR_... on error
 */
int fdt_fixup_memory(void *blob, u64 start, u64 size);

/**
 * Fill the DT memory node with multiple memory banks.
 * Creates the node if none was existing before.
 * If banks is 0, it will not touch the existing reg property. This allows
 * boards to not mess with the existing DT setup, which may have been
 * filled in properly before.
 *
 * @param blob		FDT blob to update
 * @param start		Array of size <banks> to hold the start addresses.
 * @param size		Array of size <banks> to hold the size of each region.
 * @param banks		Number of memory banks to create. If 0, the reg
 *			property will be left untouched.
 * @return 0 if ok, or -1 or -FDT_ERR_... on error
 */
#ifdef CONFIG_ARCH_FIXUP_FDT_MEMORY
int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks);
#else
static inline int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[],
					 int banks)
{
	return 0;
}
#endif

void fdt_fixup_ethernet(void *fdt);
int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
			 const void *val, int len, int create);
void fdt_fixup_qe_firmware(void *fdt);

/**
 * Update native-mode property of display-timings node to the phandle
 * of the timings matching a display by name (case insensitive).
 *
 * see kernel Documentation/devicetree/bindings/video/display-timing.txt
 *
 * @param blob		FDT blob to update
 * @param path		path within dt
 * @param display	name of display timing to match
 * @return 0 if ok, or -FDT_ERR_... on error
 */
int fdt_fixup_display(void *blob, const char *path, const char *display);

#if defined(CONFIG_USB_EHCI_FSL) || defined(CONFIG_USB_XHCI_FSL)
void fsl_fdt_fixup_dr_usb(void *blob, bd_t *bd);
#else
static inline void fsl_fdt_fixup_dr_usb(void *blob, bd_t *bd) {}
#endif /* defined(CONFIG_USB_EHCI_FSL) || defined(CONFIG_USB_XHCI_FSL) */

#if defined(CONFIG_SYS_FSL_SEC_COMPAT)
void fdt_fixup_crypto_node(void *blob, int sec_rev);
#else
static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {}
#endif

/**
 * Record information about a processed loadable in /fit-images (creating
 * /fit-images if necessary).
 *
 * @param blob		FDT blob to update
 * @param index	        index of this loadable
 * @param name          name of the loadable
 * @param load_addr     address the loadable was loaded to
 * @param size          number of bytes loaded
 * @param entry_point   entry point (if specified, otherwise pass -1)
 * @param type          type (if specified, otherwise pass NULL)
 * @param os            os-type (if specified, otherwise pass NULL)
 * @return 0 if ok, or -1 or -FDT_ERR_... on error
 */
int fdt_record_loadable(void *blob, u32 index, const char *name,
			uintptr_t load_addr, u32 size, uintptr_t entry_point,
			const char *type, const char *os);

#ifdef CONFIG_PCI
#include <pci.h>
int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose);
#endif

int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name);

/**
 * Add board-specific data to the FDT before booting the OS.
 *
 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
 * This function is called if CONFIG_OF_BOARD_SETUP is defined
 *
 * @param blob		FDT blob to update
 * @param bd_t		Pointer to board data
 * @return 0 if ok, or -FDT_ERR_... on error
 */
int ft_board_setup(void *blob, bd_t *bd);

/*
 * The keystone2 SOC requires all 32 bit aliased addresses to be converted
 * to their 36 physical format. This has to happen after all fdt nodes
 * are added or modified by the image_setup_libfdt(). The ft_board_setup_ex()
 * called at the end of the image_setup_libfdt() is to do that convertion.
 */
void ft_board_setup_ex(void *blob, bd_t *bd);
void ft_cpu_setup(void *blob, bd_t *bd);
void ft_pci_setup(void *blob, bd_t *bd);

/**
 * Add system-specific data to the FDT before booting the OS.
 *
 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
 * This function is called if CONFIG_OF_SYSTEM_SETUP is defined
 *
 * @param blob		FDT blob to update
 * @param bd_t		Pointer to board data
 * @return 0 if ok, or -FDT_ERR_... on error
 */
int ft_system_setup(void *blob, bd_t *bd);

void set_working_fdt_addr(ulong addr);

/**
 * shrink down the given blob to minimum size + some extrasize if required
 *
 * @param blob		FDT blob to update
 * @param extrasize	additional bytes needed
 * @return 0 if ok, or -FDT_ERR_... on error
 */
int fdt_shrink_to_minimum(void *blob, uint extrasize);
int fdt_increase_size(void *fdt, int add_len);

int fdt_fixup_nor_flash_size(void *blob);

#if defined(CONFIG_FDT_FIXUP_PARTITIONS)
void fdt_fixup_mtdparts(void *fdt, void *node_info, int node_info_size);
#else
static inline void fdt_fixup_mtdparts(void *fdt, void *node_info,
					int node_info_size) {}
#endif

void fdt_del_node_and_alias(void *blob, const char *alias);
u64 fdt_translate_address(const void *blob, int node_offset,
			  const __be32 *in_addr);
int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
					phys_addr_t compat_off);
int fdt_alloc_phandle(void *blob);
int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle);
unsigned int fdt_create_phandle(void *fdt, int nodeoffset);
int fdt_add_edid(void *blob, const char *compat, unsigned char *buf);

int fdt_verify_alias_address(void *fdt, int anode, const char *alias,
			      u64 addr);
u64 fdt_get_base_address(const void *fdt, int node);
int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr,
		   uint64_t *addr, uint64_t *len);

enum fdt_status {
	FDT_STATUS_OKAY,
	FDT_STATUS_DISABLED,
	FDT_STATUS_FAIL,
	FDT_STATUS_FAIL_ERROR_CODE,
};
int fdt_set_node_status(void *fdt, int nodeoffset,
			enum fdt_status status, unsigned int error_code);
static inline int fdt_status_okay(void *fdt, int nodeoffset)
{
	return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_OKAY, 0);
}
static inline int fdt_status_disabled(void *fdt, int nodeoffset)
{
	return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED, 0);
}
static inline int fdt_status_fail(void *fdt, int nodeoffset)
{
	return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_FAIL, 0);
}

int fdt_set_status_by_alias(void *fdt, const char *alias,
			    enum fdt_status status, unsigned int error_code);
static inline int fdt_status_okay_by_alias(void *fdt, const char *alias)
{
	return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_OKAY, 0);
}
static inline int fdt_status_disabled_by_alias(void *fdt, const char *alias)
{
	return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_DISABLED, 0);
}
static inline int fdt_status_fail_by_alias(void *fdt, const char *alias)
{
	return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_FAIL, 0);
}

/* Helper to read a big number; size is in cells (not bytes) */
static inline u64 fdt_read_number(const fdt32_t *cell, int size)
{
	u64 r = 0;
	while (size--)
		r = (r << 32) | fdt32_to_cpu(*(cell++));
	return r;
}

void fdt_support_default_count_cells(const void *blob, int parentoffset,
					int *addrc, int *sizec);
int ft_verify_fdt(void *fdt);
int arch_fixup_memory_node(void *blob);

int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width,
			    u32 height, u32 stride, const char *format);

int fdt_overlay_apply_verbose(void *fdt, void *fdto);

#endif /* ifdef CONFIG_OF_LIBFDT */

#ifdef USE_HOSTCC
int fdtdec_get_int(const void *blob, int node, const char *prop_name,
		int default_val);
#endif
#ifdef CONFIG_FMAN_ENET
int fdt_update_ethernet_dt(void *blob);
#endif
#ifdef CONFIG_FSL_MC_ENET
void fdt_fixup_board_enet(void *blob);
#endif
#endif /* ifndef __FDT_SUPPORT_H */