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_chosen(void *fdt);
20 int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end);
21 void do_fixup_by_path(void *fdt, const char *path, const char *prop,
22 const void *val, int len, int create);
23 void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,
26 static inline void do_fixup_by_path_string(void *fdt, const char *path,
27 const char *prop, const char *status)
29 do_fixup_by_path(fdt, path, prop, status, strlen(status) + 1, 1);
32 void do_fixup_by_prop(void *fdt,
33 const char *pname, const void *pval, int plen,
34 const char *prop, const void *val, int len,
36 void do_fixup_by_prop_u32(void *fdt,
37 const char *pname, const void *pval, int plen,
38 const char *prop, u32 val, int create);
39 void do_fixup_by_compat(void *fdt, const char *compat,
40 const char *prop, const void *val, int len, int create);
41 void do_fixup_by_compat_u32(void *fdt, const char *compat,
42 const char *prop, u32 val, int create);
43 int fdt_fixup_memory(void *blob, u64 start, u64 size);
44 int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks);
45 void fdt_fixup_ethernet(void *fdt);
46 int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
47 const void *val, int len, int create);
48 void fdt_fixup_qe_firmware(void *fdt);
50 #if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
51 void fdt_fixup_dr_usb(void *blob, bd_t *bd);
53 static inline void fdt_fixup_dr_usb(void *blob, bd_t *bd) {}
54 #endif /* defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB) */
56 #if defined(CONFIG_SYS_FSL_SEC_COMPAT)
57 void fdt_fixup_crypto_node(void *blob, int sec_rev);
59 static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {}
64 int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose);
67 int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name);
70 * Add board-specific data to the FDT before booting the OS.
72 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
74 * @param blob FDT blob to update
75 * @param bd_t Pointer to board data
76 * @return 0 if ok, or -FDT_ERR_... on error
78 int ft_board_setup(void *blob, bd_t *bd);
81 * The keystone2 SOC requires all 32 bit aliased addresses to be converted
82 * to their 36 physical format. This has to happen after all fdt nodes
83 * are added or modified by the image_setup_libfdt(). The ft_board_setup_ex()
84 * called at the end of the image_setup_libfdt() is to do that convertion.
86 void ft_board_setup_ex(void *blob, bd_t *bd);
87 void ft_cpu_setup(void *blob, bd_t *bd);
88 void ft_pci_setup(void *blob, bd_t *bd);
90 void set_working_fdt_addr(void *addr);
91 int fdt_shrink_to_minimum(void *blob);
92 int fdt_increase_size(void *fdt, int add_len);
94 int fdt_fixup_nor_flash_size(void *blob);
96 void fdt_fixup_mtdparts(void *fdt, void *node_info, int node_info_size);
97 void fdt_del_node_and_alias(void *blob, const char *alias);
98 u64 fdt_translate_address(void *blob, int node_offset, const __be32 *in_addr);
99 int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
100 phys_addr_t compat_off);
101 int fdt_alloc_phandle(void *blob);
102 int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle);
103 unsigned int fdt_create_phandle(void *fdt, int nodeoffset);
104 int fdt_add_edid(void *blob, const char *compat, unsigned char *buf);
106 int fdt_verify_alias_address(void *fdt, int anode, const char *alias,
108 u64 fdt_get_base_address(void *fdt, int node);
109 int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr,
110 uint64_t *addr, uint64_t *len);
116 FDT_STATUS_FAIL_ERROR_CODE,
118 int fdt_set_node_status(void *fdt, int nodeoffset,
119 enum fdt_status status, unsigned int error_code);
120 static inline int fdt_status_okay(void *fdt, int nodeoffset)
122 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_OKAY, 0);
124 static inline int fdt_status_disabled(void *fdt, int nodeoffset)
126 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED, 0);
128 static inline int fdt_status_fail(void *fdt, int nodeoffset)
130 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_FAIL, 0);
133 int fdt_set_status_by_alias(void *fdt, const char *alias,
134 enum fdt_status status, unsigned int error_code);
135 static inline int fdt_status_okay_by_alias(void *fdt, const char *alias)
137 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_OKAY, 0);
139 static inline int fdt_status_disabled_by_alias(void *fdt, const char *alias)
141 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_DISABLED, 0);
143 static inline int fdt_status_fail_by_alias(void *fdt, const char *alias)
145 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_FAIL, 0);
148 /* Helper to read a big number; size is in cells (not bytes) */
149 static inline u64 of_read_number(const fdt32_t *cell, int size)
153 r = (r << 32) | fdt32_to_cpu(*(cell++));
157 void of_bus_default_count_cells(void *blob, int parentoffset,
158 int *addrc, int *sizec);
159 int ft_verify_fdt(void *fdt);
160 int arch_fixup_memory_node(void *blob);
162 #endif /* ifdef CONFIG_OF_LIBFDT */
165 int fdtdec_get_int(const void *blob, int node, const char *prop_name,
168 #endif /* ifndef __FDT_SUPPORT_H */