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_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, 24 u32 val, int create); 25 26 static inline void do_fixup_by_path_string(void *fdt, const char *path, 27 const char *prop, const char *status) 28 { 29 do_fixup_by_path(fdt, path, prop, status, strlen(status) + 1, 1); 30 } 31 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, 35 int create); 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); 49 50 /** 51 * Update native-mode property of display-timings node to the phandle 52 * of the timings matching a display by name (case insensitive). 53 * 54 * see kernel Documentation/devicetree/bindings/video/display-timing.txt 55 * 56 * @param blob FDT blob to update 57 * @param path path within dt 58 * @param display name of display timing to match 59 * @return 0 if ok, or -FDT_ERR_... on error 60 */ 61 int fdt_fixup_display(void *blob, const char *path, const char *display); 62 63 #if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB) 64 void fdt_fixup_dr_usb(void *blob, bd_t *bd); 65 #else 66 static inline void fdt_fixup_dr_usb(void *blob, bd_t *bd) {} 67 #endif /* defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB) */ 68 69 #if defined(CONFIG_SYS_FSL_SEC_COMPAT) 70 void fdt_fixup_crypto_node(void *blob, int sec_rev); 71 #else 72 static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {} 73 #endif 74 75 #ifdef CONFIG_PCI 76 #include <pci.h> 77 int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose); 78 #endif 79 80 int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name); 81 82 /** 83 * Add board-specific data to the FDT before booting the OS. 84 * 85 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space. 86 * This function is called if CONFIG_OF_BOARD_SETUP is defined 87 * 88 * @param blob FDT blob to update 89 * @param bd_t Pointer to board data 90 * @return 0 if ok, or -FDT_ERR_... on error 91 */ 92 int ft_board_setup(void *blob, bd_t *bd); 93 94 /* 95 * The keystone2 SOC requires all 32 bit aliased addresses to be converted 96 * to their 36 physical format. This has to happen after all fdt nodes 97 * are added or modified by the image_setup_libfdt(). The ft_board_setup_ex() 98 * called at the end of the image_setup_libfdt() is to do that convertion. 99 */ 100 void ft_board_setup_ex(void *blob, bd_t *bd); 101 void ft_cpu_setup(void *blob, bd_t *bd); 102 void ft_pci_setup(void *blob, bd_t *bd); 103 104 /** 105 * Add system-specific data to the FDT before booting the OS. 106 * 107 * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space. 108 * This function is called if CONFIG_OF_SYSTEM_SETUP is defined 109 * 110 * @param blob FDT blob to update 111 * @param bd_t Pointer to board data 112 * @return 0 if ok, or -FDT_ERR_... on error 113 */ 114 int ft_system_setup(void *blob, bd_t *bd); 115 116 void set_working_fdt_addr(ulong addr); 117 int fdt_shrink_to_minimum(void *blob); 118 int fdt_increase_size(void *fdt, int add_len); 119 120 int fdt_fixup_nor_flash_size(void *blob); 121 122 void fdt_fixup_mtdparts(void *fdt, void *node_info, int node_info_size); 123 void fdt_del_node_and_alias(void *blob, const char *alias); 124 u64 fdt_translate_address(void *blob, int node_offset, const __be32 *in_addr); 125 int fdt_node_offset_by_compat_reg(void *blob, const char *compat, 126 phys_addr_t compat_off); 127 int fdt_alloc_phandle(void *blob); 128 int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle); 129 unsigned int fdt_create_phandle(void *fdt, int nodeoffset); 130 int fdt_add_edid(void *blob, const char *compat, unsigned char *buf); 131 132 int fdt_verify_alias_address(void *fdt, int anode, const char *alias, 133 u64 addr); 134 u64 fdt_get_base_address(void *fdt, int node); 135 int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr, 136 uint64_t *addr, uint64_t *len); 137 138 enum fdt_status { 139 FDT_STATUS_OKAY, 140 FDT_STATUS_DISABLED, 141 FDT_STATUS_FAIL, 142 FDT_STATUS_FAIL_ERROR_CODE, 143 }; 144 int fdt_set_node_status(void *fdt, int nodeoffset, 145 enum fdt_status status, unsigned int error_code); 146 static inline int fdt_status_okay(void *fdt, int nodeoffset) 147 { 148 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_OKAY, 0); 149 } 150 static inline int fdt_status_disabled(void *fdt, int nodeoffset) 151 { 152 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED, 0); 153 } 154 static inline int fdt_status_fail(void *fdt, int nodeoffset) 155 { 156 return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_FAIL, 0); 157 } 158 159 int fdt_set_status_by_alias(void *fdt, const char *alias, 160 enum fdt_status status, unsigned int error_code); 161 static inline int fdt_status_okay_by_alias(void *fdt, const char *alias) 162 { 163 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_OKAY, 0); 164 } 165 static inline int fdt_status_disabled_by_alias(void *fdt, const char *alias) 166 { 167 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_DISABLED, 0); 168 } 169 static inline int fdt_status_fail_by_alias(void *fdt, const char *alias) 170 { 171 return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_FAIL, 0); 172 } 173 174 /* Helper to read a big number; size is in cells (not bytes) */ 175 static inline u64 of_read_number(const fdt32_t *cell, int size) 176 { 177 u64 r = 0; 178 while (size--) 179 r = (r << 32) | fdt32_to_cpu(*(cell++)); 180 return r; 181 } 182 183 void of_bus_default_count_cells(void *blob, int parentoffset, 184 int *addrc, int *sizec); 185 int ft_verify_fdt(void *fdt); 186 int arch_fixup_memory_node(void *blob); 187 188 int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width, 189 u32 height, u32 stride, const char *format); 190 191 #endif /* ifdef CONFIG_OF_LIBFDT */ 192 193 #ifdef USE_HOSTCC 194 int fdtdec_get_int(const void *blob, int node, const char *prop_name, 195 int default_val); 196 #endif 197 #endif /* ifndef __FDT_SUPPORT_H */ 198