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);
21 * Add data to the root of the FDT before booting the OS.
23 * See doc/device-tree-bindings/root.txt
25 * @param fdt FDT address in memory
26 * @return 0 if ok, or -FDT_ERR_... on error
28 int fdt_root(void *fdt);
31 * Add chosen data the FDT before booting the OS.
33 * In particular, this adds the kernel command line (bootargs) to the FDT.
35 * @param fdt FDT address in memory
36 * @return 0 if ok, or -FDT_ERR_... on error
38 int fdt_chosen(void *fdt);
41 * Add initrd information to the FDT before booting the OS.
43 * @param fdt FDT address in memory
44 * @return 0 if ok, or -FDT_ERR_... on error
46 int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end);
48 void do_fixup_by_path(void *fdt, const char *path, const char *prop,
49 const void *val, int len, int create);
50 void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,
51 uint32_t val, int create);
53 static inline void do_fixup_by_path_string(void *fdt, const char *path,
54 const char *prop, const char *status)
56 do_fixup_by_path(fdt, path, prop, status, strlen(status) + 1, 1);
59 void do_fixup_by_prop(void *fdt,
60 const char *pname, const void *pval, int plen,
61 const char *prop, const void *val, int len,
63 void do_fixup_by_prop_u32(void *fdt,
64 const char *pname, const void *pval, int plen,
65 const char *prop, uint32_t val, int create);
66 void do_fixup_by_compat(void *fdt, const char *compat,
67 const char *prop, const void *val, int len, int create);
68 void do_fixup_by_compat_u32(void *fdt, const char *compat,
69 const char *prop, uint32_t val, int create);
70 int fdt_fixup_memory(void *blob, uint64_t start, uint64_t size);
71 int fdt_fixup_memory_banks(void *blob, uint64_t start[], uint64_t size[], int banks);
72 void fdt_fixup_ethernet(void *fdt);
73 int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
74 const void *val, int len, int create);
75 void fdt_fixup_qe_firmware(void *fdt);
77 #if defined(__UBOOT__)
79 * Update native-mode property of display-timings node to the phandle
80 * of the timings matching a display by name (case insensitive).
82 * see kernel Documentation/devicetree/bindings/video/display-timing.txt
84 * @param blob FDT blob to update
85 * @param path path within dt
86 * @param display name of display timing to match
87 * @return 0 if ok, or -FDT_ERR_... on error
89 int fdt_fixup_display(void *blob, const char *path, const char *display);
91 #if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
92 void fdt_fixup_dr_usb(void *blob, bd_t *bd);
94 static inline void fdt_fixup_dr_usb(void *blob, bd_t *bd) {}
95 #endif /* defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB) */
97 #if defined(CONFIG_SYS_FSL_SEC_COMPAT)
98 void fdt_fixup_crypto_node(void *blob, int sec_rev);
100 static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {}
105 int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose);
108 int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name);
111 * Add board-specific data to the FDT before booting the OS.
113 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
114 * This function is called if CONFIG_OF_BOARD_SETUP is defined
116 * @param blob FDT blob to update
117 * @param bd_t Pointer to board data
118 * @return 0 if ok, or -FDT_ERR_... on error
120 int ft_board_setup(void *blob, bd_t *bd);
123 * The keystone2 SOC requires all 32 bit aliased addresses to be converted
124 * to their 36 physical format. This has to happen after all fdt nodes
125 * are added or modified by the image_setup_libfdt(). The ft_board_setup_ex()
126 * called at the end of the image_setup_libfdt() is to do that convertion.
128 void ft_board_setup_ex(void *blob, bd_t *bd);
129 void ft_cpu_setup(void *blob, bd_t *bd);
130 void ft_pci_setup(void *blob, bd_t *bd);
133 * Add system-specific data to the FDT before booting the OS.
135 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
136 * This function is called if CONFIG_OF_SYSTEM_SETUP is defined
138 * @param blob FDT blob to update
139 * @param bd_t Pointer to board data
140 * @return 0 if ok, or -FDT_ERR_... on error
142 int ft_system_setup(void *blob, bd_t *bd);
144 void set_working_fdt_addr(ulong addr);
145 int fdt_shrink_to_minimum(void *blob);
146 int fdt_increase_size(void *fdt, int add_len);
148 int fdt_fixup_nor_flash_size(void *blob);
150 void fdt_fixup_mtdparts(void *fdt, void *node_info, int node_info_size);
151 void fdt_del_node_and_alias(void *blob, const char *alias);
152 uint64_t fdt_translate_address(void *blob, int node_offset, const __be32 *in_addr);
153 int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
154 phys_addr_t compat_off);
155 int fdt_alloc_phandle(void *blob);
156 int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle);
157 unsigned int fdt_create_phandle(void *fdt, int nodeoffset);
158 int fdt_add_edid(void *blob, const char *compat, unsigned char *buf);
160 int fdt_verify_alias_address(void *fdt, int anode, const char *alias,
162 uint64_t fdt_get_base_address(void *fdt, int node);
163 int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr,
164 uint64_t *addr, uint64_t *len);
165 #endif /* __UBOOT__ */
171 FDT_STATUS_FAIL_ERROR_CODE,
173 int fdt_set_node_status(void *fdt, int nodeoffset,
174 enum fdt_status status, unsigned int error_code);
175 static inline int fdt_status_okay(void *fdt, int nodeoffset)
177 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_OKAY, 0);
179 static inline int fdt_status_disabled(void *fdt, int nodeoffset)
181 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED, 0);
183 static inline int fdt_status_fail(void *fdt, int nodeoffset)
185 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_FAIL, 0);
188 int fdt_set_status_by_alias(void *fdt, const char *alias,
189 enum fdt_status status, unsigned int error_code);
190 static inline int fdt_status_okay_by_alias(void *fdt, const char *alias)
192 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_OKAY, 0);
194 static inline int fdt_status_disabled_by_alias(void *fdt, const char *alias)
196 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_DISABLED, 0);
198 static inline int fdt_status_fail_by_alias(void *fdt, const char *alias)
200 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_FAIL, 0);
203 /* Helper to read a big number; size is in cells (not bytes) */
204 static inline uint64_t of_read_number(const fdt32_t *cell, int size)
209 r = (r << 32) | fdt32_to_cpu(*cell);
215 void of_bus_default_count_cells(void *blob, int parentoffset,
216 int *addrc, int *sizec);
217 int ft_verify_fdt(void *fdt);
218 int arch_fixup_memory_node(void *blob);
220 int fdt_setup_simplefb_node(void *fdt, int node, uint64_t base_address, uint32_t width,
221 uint32_t height, uint32_t stride, const char *format);
223 #endif /* ifdef CONFIG_OF_LIBFDT */
226 int fdtdec_get_int(const void *blob, int node, const char *prop_name,
229 #endif /* ifndef __FDT_SUPPORT_H */