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