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1/*
2 * (C) Copyright 2007
3 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
4 *
1a459660 5 * SPDX-License-Identifier: GPL-2.0+
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6 */
7
8#ifndef __FDT_SUPPORT_H
9#define __FDT_SUPPORT_H
10
11#ifdef CONFIG_OF_LIBFDT
12
58864ddc 13#include <libfdt.h>
64dbbd40 14
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15u32 fdt_getprop_u32_default_node(const void *fdt, int off, int cell,
16 const char *prop, const u32 dflt);
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17u32 fdt_getprop_u32_default(const void *fdt, const char *path,
18 const char *prop, const u32 dflt);
bc6ed0f9 19int fdt_chosen(void *fdt);
dbe963ae 20int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end);
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21void do_fixup_by_path(void *fdt, const char *path, const char *prop,
22 const void *val, int len, int create);
23void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,
24 u32 val, int create);
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25
26static inline void do_fixup_by_path_string(void *fdt, const char *path,
27 const char *prop, const char *status)
28{
29 do_fixup_by_path(fdt, path, prop, status, strlen(status) + 1, 1);
30}
31
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32void do_fixup_by_prop(void *fdt,
33 const char *pname, const void *pval, int plen,
34 const char *prop, const void *val, int len,
35 int create);
36void do_fixup_by_prop_u32(void *fdt,
37 const char *pname, const void *pval, int plen,
38 const char *prop, u32 val, int create);
39void do_fixup_by_compat(void *fdt, const char *compat,
40 const char *prop, const void *val, int len, int create);
41void do_fixup_by_compat_u32(void *fdt, const char *compat,
42 const char *prop, u32 val, int create);
3c927281 43int fdt_fixup_memory(void *blob, u64 start, u64 size);
a6bd9e83 44int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks);
ba37aa03 45void fdt_fixup_ethernet(void *fdt);
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46int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
47 const void *val, int len, int create);
b8ec2385 48void fdt_fixup_qe_firmware(void *fdt);
64dbbd40 49
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50/**
51 * Update native-mode property of display-timings node to the phandle
52 * of the timings matching a display by name (case insensitive).
53 *
54 * see kernel Documentation/devicetree/bindings/video/display-timing.txt
55 *
56 * @param blob FDT blob to update
57 * @param path path within dt
58 * @param display name of display timing to match
59 * @return 0 if ok, or -FDT_ERR_... on error
60 */
61int fdt_fixup_display(void *blob, const char *path, const char *display);
62
79f49120 63#if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
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64void fdt_fixup_dr_usb(void *blob, bd_t *bd);
65#else
66static inline void fdt_fixup_dr_usb(void *blob, bd_t *bd) {}
79f49120 67#endif /* defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB) */
18e69a35 68
929a2138 69#if defined(CONFIG_SYS_FSL_SEC_COMPAT)
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70void fdt_fixup_crypto_node(void *blob, int sec_rev);
71#else
72static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {}
73#endif
74
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75#ifdef CONFIG_PCI
76#include <pci.h>
77int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose);
78#endif
79
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80int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name);
81
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82/**
83 * Add board-specific data to the FDT before booting the OS.
84 *
85 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
6f4dbc21 86 * This function is called if CONFIG_OF_BOARD_SETUP is defined
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87 *
88 * @param blob FDT blob to update
89 * @param bd_t Pointer to board data
90 * @return 0 if ok, or -FDT_ERR_... on error
91 */
92int ft_board_setup(void *blob, bd_t *bd);
93
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94/*
95 * The keystone2 SOC requires all 32 bit aliased addresses to be converted
96 * to their 36 physical format. This has to happen after all fdt nodes
97 * are added or modified by the image_setup_libfdt(). The ft_board_setup_ex()
98 * called at the end of the image_setup_libfdt() is to do that convertion.
99 */
100void ft_board_setup_ex(void *blob, bd_t *bd);
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101void ft_cpu_setup(void *blob, bd_t *bd);
102void ft_pci_setup(void *blob, bd_t *bd);
e125a2ff 103
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104/**
105 * Add system-specific data to the FDT before booting the OS.
106 *
107 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
108 * This function is called if CONFIG_OF_SYSTEM_SETUP is defined
109 *
110 * @param blob FDT blob to update
111 * @param bd_t Pointer to board data
112 * @return 0 if ok, or -FDT_ERR_... on error
113 */
114int ft_system_setup(void *blob, bd_t *bd);
115
90fbee3e 116void set_working_fdt_addr(ulong addr);
5bf58ccc 117int fdt_shrink_to_minimum(void *blob);
b3606f14 118int fdt_increase_size(void *fdt, int add_len);
54f9c866 119
8a805df1 120int fdt_fixup_nor_flash_size(void *blob);
30d45c0d 121
3c950e2e 122void fdt_fixup_mtdparts(void *fdt, void *node_info, int node_info_size);
49b97d9c 123void fdt_del_node_and_alias(void *blob, const char *alias);
8aa5ec6e 124u64 fdt_translate_address(void *blob, int node_offset, const __be32 *in_addr);
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125int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
126 phys_addr_t compat_off);
b4b847e9 127int fdt_alloc_phandle(void *blob);
f117c0f0 128int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle);
3c927ccc 129unsigned int fdt_create_phandle(void *fdt, int nodeoffset);
beca5a5f 130int fdt_add_edid(void *blob, const char *compat, unsigned char *buf);
3c950e2e 131
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132int fdt_verify_alias_address(void *fdt, int anode, const char *alias,
133 u64 addr);
134u64 fdt_get_base_address(void *fdt, int node);
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135int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr,
136 uint64_t *addr, uint64_t *len);
bb682001 137
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138enum fdt_status {
139 FDT_STATUS_OKAY,
140 FDT_STATUS_DISABLED,
141 FDT_STATUS_FAIL,
142 FDT_STATUS_FAIL_ERROR_CODE,
143};
144int fdt_set_node_status(void *fdt, int nodeoffset,
145 enum fdt_status status, unsigned int error_code);
146static inline int fdt_status_okay(void *fdt, int nodeoffset)
147{
148 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_OKAY, 0);
149}
150static inline int fdt_status_disabled(void *fdt, int nodeoffset)
151{
152 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED, 0);
153}
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154static inline int fdt_status_fail(void *fdt, int nodeoffset)
155{
156 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_FAIL, 0);
157}
2a523f52 158
b940ca64 159int fdt_set_status_by_alias(void *fdt, const char *alias,
2a523f52 160 enum fdt_status status, unsigned int error_code);
b940ca64 161static inline int fdt_status_okay_by_alias(void *fdt, const char *alias)
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162{
163 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_OKAY, 0);
164}
b940ca64 165static inline int fdt_status_disabled_by_alias(void *fdt, const char *alias)
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166{
167 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_DISABLED, 0);
168}
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169static inline int fdt_status_fail_by_alias(void *fdt, const char *alias)
170{
171 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_FAIL, 0);
172}
2a523f52 173
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174/* Helper to read a big number; size is in cells (not bytes) */
175static inline u64 of_read_number(const fdt32_t *cell, int size)
176{
177 u64 r = 0;
178 while (size--)
179 r = (r << 32) | fdt32_to_cpu(*(cell++));
180 return r;
181}
182
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183void of_bus_default_count_cells(void *blob, int parentoffset,
184 int *addrc, int *sizec);
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185int ft_verify_fdt(void *fdt);
186int arch_fixup_memory_node(void *blob);
f43b4356 187
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188int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width,
189 u32 height, u32 stride, const char *format);
190
64dbbd40 191#endif /* ifdef CONFIG_OF_LIBFDT */
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192
193#ifdef USE_HOSTCC
194int fdtdec_get_int(const void *blob, int node, const char *prop_name,
195 int default_val);
196#endif
64dbbd40 197#endif /* ifndef __FDT_SUPPORT_H */