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 uint32_t fdt_getprop_u32_default_node(const void *fdt, int off, int cell,
16 const char *prop, const uint32_t dflt);
17 uint32_t fdt_getprop_u32_default(const void *fdt, const char *path,
18 const char *prop, const uint32_t 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,
25 uint32_t val, int create);
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, uint32_t 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, uint32_t val, int create);
44 int fdt_fixup_memory(void *blob, uint64_t start, uint64_t size);
45 int fdt_fixup_memory_banks(void *blob, uint64_t start[], uint64_t 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);
51 #if defined(__UBOOT__)
53 * Update native-mode property of display-timings node to the phandle
54 * of the timings matching a display by name (case insensitive).
56 * see kernel Documentation/devicetree/bindings/video/display-timing.txt
58 * @param blob FDT blob to update
59 * @param path path within dt
60 * @param display name of display timing to match
61 * @return 0 if ok, or -FDT_ERR_... on error
63 int fdt_fixup_display(void *blob, const char *path, const char *display);
65 #if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
66 void fdt_fixup_dr_usb(void *blob, bd_t *bd);
68 static inline void fdt_fixup_dr_usb(void *blob, bd_t *bd) {}
69 #endif /* defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB) */
71 #if defined(CONFIG_SYS_FSL_SEC_COMPAT)
72 void fdt_fixup_crypto_node(void *blob, int sec_rev);
74 static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {}
79 int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose);
82 int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name);
85 * Add board-specific data to the FDT before booting the OS.
87 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
88 * This function is called if CONFIG_OF_BOARD_SETUP is defined
90 * @param blob FDT blob to update
91 * @param bd_t Pointer to board data
92 * @return 0 if ok, or -FDT_ERR_... on error
94 int ft_board_setup(void *blob, bd_t *bd);
97 * The keystone2 SOC requires all 32 bit aliased addresses to be converted
98 * to their 36 physical format. This has to happen after all fdt nodes
99 * are added or modified by the image_setup_libfdt(). The ft_board_setup_ex()
100 * called at the end of the image_setup_libfdt() is to do that convertion.
102 void ft_board_setup_ex(void *blob, bd_t *bd);
103 void ft_cpu_setup(void *blob, bd_t *bd);
104 void ft_pci_setup(void *blob, bd_t *bd);
107 * Add system-specific data to the FDT before booting the OS.
109 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
110 * This function is called if CONFIG_OF_SYSTEM_SETUP is defined
112 * @param blob FDT blob to update
113 * @param bd_t Pointer to board data
114 * @return 0 if ok, or -FDT_ERR_... on error
116 int ft_system_setup(void *blob, bd_t *bd);
118 void set_working_fdt_addr(ulong addr);
119 int fdt_shrink_to_minimum(void *blob);
120 int fdt_increase_size(void *fdt, int add_len);
122 int fdt_fixup_nor_flash_size(void *blob);
124 void fdt_fixup_mtdparts(void *fdt, void *node_info, int node_info_size);
125 void fdt_del_node_and_alias(void *blob, const char *alias);
126 uint64_t fdt_translate_address(void *blob, int node_offset, const __be32 *in_addr);
127 int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
128 phys_addr_t compat_off);
129 int fdt_alloc_phandle(void *blob);
130 int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle);
131 unsigned int fdt_create_phandle(void *fdt, int nodeoffset);
132 int fdt_add_edid(void *blob, const char *compat, unsigned char *buf);
134 int fdt_verify_alias_address(void *fdt, int anode, const char *alias,
136 uint64_t fdt_get_base_address(void *fdt, int node);
137 int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr,
138 uint64_t *addr, uint64_t *len);
139 #endif /* __UBOOT__ */
145 FDT_STATUS_FAIL_ERROR_CODE,
147 int fdt_set_node_status(void *fdt, int nodeoffset,
148 enum fdt_status status, unsigned int error_code);
149 static inline int fdt_status_okay(void *fdt, int nodeoffset)
151 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_OKAY, 0);
153 static inline int fdt_status_disabled(void *fdt, int nodeoffset)
155 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED, 0);
157 static inline int fdt_status_fail(void *fdt, int nodeoffset)
159 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_FAIL, 0);
162 int fdt_set_status_by_alias(void *fdt, const char *alias,
163 enum fdt_status status, unsigned int error_code);
164 static inline int fdt_status_okay_by_alias(void *fdt, const char *alias)
166 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_OKAY, 0);
168 static inline int fdt_status_disabled_by_alias(void *fdt, const char *alias)
170 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_DISABLED, 0);
172 static inline int fdt_status_fail_by_alias(void *fdt, const char *alias)
174 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_FAIL, 0);
177 /* Helper to read a big number; size is in cells (not bytes) */
178 static inline uint64_t of_read_number(const fdt32_t *cell, int size)
183 r = (r << 32) | fdt32_to_cpu(*cell);
189 void of_bus_default_count_cells(void *blob, int parentoffset,
190 int *addrc, int *sizec);
191 int ft_verify_fdt(void *fdt);
192 int arch_fixup_memory_node(void *blob);
194 int fdt_setup_simplefb_node(void *fdt, int node, uint64_t base_address, uint32_t width,
195 uint32_t height, uint32_t stride, const char *format);
197 #endif /* ifdef CONFIG_OF_LIBFDT */
200 int fdtdec_get_int(const void *blob, int node, const char *prop_name,
203 #endif /* ifndef __FDT_SUPPORT_H */