1 /* 2 * (C) Copyright 2007 3 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #ifndef __FDT_SUPPORT_H 9 #define __FDT_SUPPORT_H 10 11 #ifdef CONFIG_OF_LIBFDT 12 13 #include <libfdt.h> 14 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, 25 u32 val, int create); 26 27 static inline void do_fixup_by_path_string(void *fdt, const char *path, 28 const char *prop, const char *status) 29 { 30 do_fixup_by_path(fdt, path, prop, status, strlen(status) + 1, 1); 31 } 32 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, 36 int create); 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); 50 51 /** 52 * Update native-mode property of display-timings node to the phandle 53 * of the timings matching a display by name (case insensitive). 54 * 55 * see kernel Documentation/devicetree/bindings/video/display-timing.txt 56 * 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 61 */ 62 int fdt_fixup_display(void *blob, const char *path, const char *display); 63 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); 66 #else 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) */ 69 70 #if defined(CONFIG_SYS_FSL_SEC_COMPAT) 71 void fdt_fixup_crypto_node(void *blob, int sec_rev); 72 #else 73 static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {} 74 #endif 75 76 #ifdef CONFIG_PCI 77 #include <pci.h> 78 int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose); 79 #endif 80 81 int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name); 82 83 /** 84 * Add board-specific data to the FDT before booting the OS. 85 * 86 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space. 87 * This function is called if CONFIG_OF_BOARD_SETUP is defined 88 * 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 92 */ 93 int ft_board_setup(void *blob, bd_t *bd); 94 95 /* 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. 100 */ 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); 104 105 /** 106 * Add system-specific data to the FDT before booting the OS. 107 * 108 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space. 109 * This function is called if CONFIG_OF_SYSTEM_SETUP is defined 110 * 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 114 */ 115 int ft_system_setup(void *blob, bd_t *bd); 116 117 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); 120 121 int fdt_fixup_nor_flash_size(void *blob); 122 123 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); 132 133 int fdt_verify_alias_address(void *fdt, int anode, const char *alias, 134 u64 addr); 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); 138 139 enum fdt_status { 140 FDT_STATUS_OKAY, 141 FDT_STATUS_DISABLED, 142 FDT_STATUS_FAIL, 143 FDT_STATUS_FAIL_ERROR_CODE, 144 }; 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) 148 { 149 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_OKAY, 0); 150 } 151 static inline int fdt_status_disabled(void *fdt, int nodeoffset) 152 { 153 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED, 0); 154 } 155 static inline int fdt_status_fail(void *fdt, int nodeoffset) 156 { 157 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_FAIL, 0); 158 } 159 160 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) 163 { 164 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_OKAY, 0); 165 } 166 static inline int fdt_status_disabled_by_alias(void *fdt, const char *alias) 167 { 168 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_DISABLED, 0); 169 } 170 static inline int fdt_status_fail_by_alias(void *fdt, const char *alias) 171 { 172 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_FAIL, 0); 173 } 174 175 /* 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) 177 { 178 u64 r = 0; 179 while (size--) 180 r = (r << 32) | fdt32_to_cpu(*(cell++)); 181 return r; 182 } 183 184 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); 188 189 int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width, 190 u32 height, u32 stride, const char *format); 191 192 #endif /* ifdef CONFIG_OF_LIBFDT */ 193 194 #ifdef USE_HOSTCC 195 int fdtdec_get_int(const void *blob, int node, const char *prop_name, 196 int default_val); 197 #endif 198 #endif /* ifndef __FDT_SUPPORT_H */ 199