include/fdt_support.h

   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 */