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 #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 */