3 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
5 * SPDX-License-Identifier: GPL-2.0+
8 #ifndef __FDT_SUPPORT_H
9 #define __FDT_SUPPORT_H
11 #ifdef CONFIG_OF_LIBFDT
15 u32 fdt_getprop_u32_default_node(const void *fdt, int off, int cell,
16 const char *prop, const u32 dflt);
17 u32 fdt_getprop_u32_default(const void *fdt, const char *path,
18 const char *prop, const u32 dflt);
19 int fdt_root(void *fdt);
20 int fdt_chosen(void *fdt);
21 int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end);
22 void do_fixup_by_path(void *fdt, const char *path, const char *prop,
23 const void *val, int len, int create);
24 void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,
27 static inline void do_fixup_by_path_string(void *fdt, const char *path,
28 const char *prop, const char *status)
30 do_fixup_by_path(fdt, path, prop, status, strlen(status) + 1, 1);
33 void do_fixup_by_prop(void *fdt,
34 const char *pname, const void *pval, int plen,
35 const char *prop, const void *val, int len,
37 void do_fixup_by_prop_u32(void *fdt,
38 const char *pname, const void *pval, int plen,
39 const char *prop, u32 val, int create);
40 void do_fixup_by_compat(void *fdt, const char *compat,
41 const char *prop, const void *val, int len, int create);
42 void do_fixup_by_compat_u32(void *fdt, const char *compat,
43 const char *prop, u32 val, int create);
44 int fdt_fixup_memory(void *blob, u64 start, u64 size);
45 int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks);
46 void fdt_fixup_ethernet(void *fdt);
47 int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
48 const void *val, int len, int create);
49 void fdt_fixup_qe_firmware(void *fdt);
52 * Update native-mode property of display-timings node to the phandle
53 * of the timings matching a display by name (case insensitive).
55 * see kernel Documentation/devicetree/bindings/video/display-timing.txt
57 * @param blob FDT blob to update
58 * @param path path within dt
59 * @param display name of display timing to match
60 * @return 0 if ok, or -FDT_ERR_... on error
62 int fdt_fixup_display(void *blob, const char *path, const char *display);
64 #if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
65 void fdt_fixup_dr_usb(void *blob, bd_t *bd);
67 static inline void fdt_fixup_dr_usb(void *blob, bd_t *bd) {}
68 #endif /* defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB) */
70 #if defined(CONFIG_SYS_FSL_SEC_COMPAT)
71 void fdt_fixup_crypto_node(void *blob, int sec_rev);
73 static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {}
78 int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose);
81 int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name);
84 * Add board-specific data to the FDT before booting the OS.
86 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
87 * This function is called if CONFIG_OF_BOARD_SETUP is defined
89 * @param blob FDT blob to update
90 * @param bd_t Pointer to board data
91 * @return 0 if ok, or -FDT_ERR_... on error
93 int ft_board_setup(void *blob, bd_t *bd);
96 * The keystone2 SOC requires all 32 bit aliased addresses to be converted
97 * to their 36 physical format. This has to happen after all fdt nodes
98 * are added or modified by the image_setup_libfdt(). The ft_board_setup_ex()
99 * called at the end of the image_setup_libfdt() is to do that convertion.
101 void ft_board_setup_ex(void *blob, bd_t *bd);
102 void ft_cpu_setup(void *blob, bd_t *bd);
103 void ft_pci_setup(void *blob, bd_t *bd);
106 * Add system-specific data to the FDT before booting the OS.
108 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
109 * This function is called if CONFIG_OF_SYSTEM_SETUP is defined
111 * @param blob FDT blob to update
112 * @param bd_t Pointer to board data
113 * @return 0 if ok, or -FDT_ERR_... on error
115 int ft_system_setup(void *blob, bd_t *bd);
117 void set_working_fdt_addr(ulong addr);
118 int fdt_shrink_to_minimum(void *blob);
119 int fdt_increase_size(void *fdt, int add_len);
121 int fdt_fixup_nor_flash_size(void *blob);
123 void fdt_fixup_mtdparts(void *fdt, void *node_info, int node_info_size);
124 void fdt_del_node_and_alias(void *blob, const char *alias);
125 u64 fdt_translate_address(void *blob, int node_offset, const __be32 *in_addr);
126 int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
127 phys_addr_t compat_off);
128 int fdt_alloc_phandle(void *blob);
129 int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle);
130 unsigned int fdt_create_phandle(void *fdt, int nodeoffset);
131 int fdt_add_edid(void *blob, const char *compat, unsigned char *buf);
133 int fdt_verify_alias_address(void *fdt, int anode, const char *alias,
135 u64 fdt_get_base_address(void *fdt, int node);
136 int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr,
137 uint64_t *addr, uint64_t *len);
143 FDT_STATUS_FAIL_ERROR_CODE,
145 int fdt_set_node_status(void *fdt, int nodeoffset,
146 enum fdt_status status, unsigned int error_code);
147 static inline int fdt_status_okay(void *fdt, int nodeoffset)
149 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_OKAY, 0);
151 static inline int fdt_status_disabled(void *fdt, int nodeoffset)
153 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED, 0);
155 static inline int fdt_status_fail(void *fdt, int nodeoffset)
157 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_FAIL, 0);
160 int fdt_set_status_by_alias(void *fdt, const char *alias,
161 enum fdt_status status, unsigned int error_code);
162 static inline int fdt_status_okay_by_alias(void *fdt, const char *alias)
164 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_OKAY, 0);
166 static inline int fdt_status_disabled_by_alias(void *fdt, const char *alias)
168 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_DISABLED, 0);
170 static inline int fdt_status_fail_by_alias(void *fdt, const char *alias)
172 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_FAIL, 0);
175 /* Helper to read a big number; size is in cells (not bytes) */
176 static inline u64 of_read_number(const fdt32_t *cell, int size)
180 r = (r << 32) | fdt32_to_cpu(*(cell++));
184 void of_bus_default_count_cells(void *blob, int parentoffset,
185 int *addrc, int *sizec);
186 int ft_verify_fdt(void *fdt);
187 int arch_fixup_memory_node(void *blob);
189 int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width,
190 u32 height, u32 stride, const char *format);
192 #endif /* ifdef CONFIG_OF_LIBFDT */
195 int fdtdec_get_int(const void *blob, int node, const char *prop_name,
198 #endif /* ifndef __FDT_SUPPORT_H */