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- /* SPDX-License-Identifier: GPL-2.0+ */
- /*
- * (C) Copyright 2007
- * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
- */
- #ifndef __FDT_SUPPORT_H
- #define __FDT_SUPPORT_H
- #ifdef CONFIG_OF_LIBFDT
- #include <asm/u-boot.h>
- #include <linux/libfdt.h>
- /**
- * arch_fixup_fdt() - Write arch-specific information to fdt
- *
- * Defined in arch/$(ARCH)/lib/bootm-fdt.c
- *
- * @blob: FDT blob to write to
- * @return 0 if ok, or -ve FDT_ERR_... on failure
- */
- int arch_fixup_fdt(void *blob);
- void ft_cpu_setup(void *blob, struct bd_info *bd);
- void ft_pci_setup(void *blob, struct bd_info *bd);
- u32 fdt_getprop_u32_default_node(const void *fdt, int off, int cell,
- const char *prop, const u32 dflt);
- u32 fdt_getprop_u32_default(const void *fdt, const char *path,
- const char *prop, const u32 dflt);
- /**
- * Add data to the root of the FDT before booting the OS.
- *
- * See doc/device-tree-bindings/root.txt
- *
- * @param fdt FDT address in memory
- * @return 0 if ok, or -FDT_ERR_... on error
- */
- int fdt_root(void *fdt);
- /**
- * Add chosen data the FDT before booting the OS.
- *
- * In particular, this adds the kernel command line (bootargs) to the FDT.
- *
- * @param fdt FDT address in memory
- * @return 0 if ok, or -FDT_ERR_... on error
- */
- int fdt_chosen(void *fdt);
- /**
- * Add initrd information to the FDT before booting the OS.
- *
- * @param fdt FDT address in memory
- * @return 0 if ok, or -FDT_ERR_... on error
- */
- int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end);
- void do_fixup_by_path(void *fdt, const char *path, const char *prop,
- const void *val, int len, int create);
- void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,
- u32 val, int create);
- static inline void do_fixup_by_path_string(void *fdt, const char *path,
- const char *prop, const char *status)
- {
- do_fixup_by_path(fdt, path, prop, status, strlen(status) + 1, 1);
- }
- void do_fixup_by_prop(void *fdt,
- const char *pname, const void *pval, int plen,
- const char *prop, const void *val, int len,
- int create);
- void do_fixup_by_prop_u32(void *fdt,
- const char *pname, const void *pval, int plen,
- const char *prop, u32 val, int create);
- void do_fixup_by_compat(void *fdt, const char *compat,
- const char *prop, const void *val, int len, int create);
- void do_fixup_by_compat_u32(void *fdt, const char *compat,
- const char *prop, u32 val, int create);
- /**
- * Setup the memory node in the DT. Creates one if none was existing before.
- * Calls fdt_fixup_memory_banks() to populate a single reg pair covering the
- * whole memory.
- *
- * @param blob FDT blob to update
- * @param start Begin of DRAM mapping in physical memory
- * @param size Size of the single memory bank
- * @return 0 if ok, or -1 or -FDT_ERR_... on error
- */
- int fdt_fixup_memory(void *blob, u64 start, u64 size);
- /**
- * Fill the DT memory node with multiple memory banks.
- * Creates the node if none was existing before.
- * If banks is 0, it will not touch the existing reg property. This allows
- * boards to not mess with the existing DT setup, which may have been
- * filled in properly before.
- *
- * @param blob FDT blob to update
- * @param start Array of size <banks> to hold the start addresses.
- * @param size Array of size <banks> to hold the size of each region.
- * @param banks Number of memory banks to create. If 0, the reg
- * property will be left untouched.
- * @return 0 if ok, or -1 or -FDT_ERR_... on error
- */
- #ifdef CONFIG_ARCH_FIXUP_FDT_MEMORY
- int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks);
- int fdt_set_usable_memory(void *blob, u64 start[], u64 size[], int banks);
- #else
- static inline int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[],
- int banks)
- {
- return 0;
- }
- #endif
- void fdt_fixup_ethernet(void *fdt);
- int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
- const void *val, int len, int create);
- void fdt_fixup_qe_firmware(void *fdt);
- /**
- * Update native-mode property of display-timings node to the phandle
- * of the timings matching a display by name (case insensitive).
- *
- * see kernel Documentation/devicetree/bindings/video/display-timing.txt
- *
- * @param blob FDT blob to update
- * @param path path within dt
- * @param display name of display timing to match
- * @return 0 if ok, or -FDT_ERR_... on error
- */
- int fdt_fixup_display(void *blob, const char *path, const char *display);
- #if defined(CONFIG_USB_EHCI_FSL) || defined(CONFIG_USB_XHCI_FSL)
- void fsl_fdt_fixup_dr_usb(void *blob, struct bd_info *bd);
- #else
- static inline void fsl_fdt_fixup_dr_usb(void *blob, struct bd_info *bd) {}
- #endif /* defined(CONFIG_USB_EHCI_FSL) || defined(CONFIG_USB_XHCI_FSL) */
- #if defined(CONFIG_SYS_FSL_SEC_COMPAT)
- void fdt_fixup_crypto_node(void *blob, int sec_rev);
- #else
- static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {}
- #endif
- /**
- * Record information about a processed loadable in /fit-images (creating
- * /fit-images if necessary).
- *
- * @param blob FDT blob to update
- * @param index index of this loadable
- * @param name name of the loadable
- * @param load_addr address the loadable was loaded to
- * @param size number of bytes loaded
- * @param entry_point entry point (if specified, otherwise pass -1)
- * @param type type (if specified, otherwise pass NULL)
- * @param os os-type (if specified, otherwise pass NULL)
- * @return 0 if ok, or -1 or -FDT_ERR_... on error
- */
- int fdt_record_loadable(void *blob, u32 index, const char *name,
- uintptr_t load_addr, u32 size, uintptr_t entry_point,
- const char *type, const char *os);
- #ifdef CONFIG_PCI
- #include <pci.h>
- int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose);
- #endif
- int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name);
- /**
- * Add board-specific data to the FDT before booting the OS.
- *
- * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
- * This function is called if CONFIG_OF_BOARD_SETUP is defined
- *
- * @param blob FDT blob to update
- * @param bd Pointer to board data
- * @return 0 if ok, or -FDT_ERR_... on error
- */
- int ft_board_setup(void *blob, struct bd_info *bd);
- /**
- * board_fdt_chosen_bootargs() - Arbitrarily amend fdt kernel command line
- *
- * This is used for late modification of kernel command line arguments just
- * before they are added into the /chosen node in flat device tree.
- *
- * @return: pointer to kernel command line arguments in memory
- */
- char *board_fdt_chosen_bootargs(void);
- /*
- * The keystone2 SOC requires all 32 bit aliased addresses to be converted
- * to their 36 physical format. This has to happen after all fdt nodes
- * are added or modified by the image_setup_libfdt(). The ft_board_setup_ex()
- * called at the end of the image_setup_libfdt() is to do that convertion.
- */
- void ft_board_setup_ex(void *blob, struct bd_info *bd);
- void ft_cpu_setup(void *blob, struct bd_info *bd);
- void ft_pci_setup(void *blob, struct bd_info *bd);
- /**
- * Add system-specific data to the FDT before booting the OS.
- *
- * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
- * This function is called if CONFIG_OF_SYSTEM_SETUP is defined
- *
- * @param blob FDT blob to update
- * @param bd Pointer to board data
- * @return 0 if ok, or -FDT_ERR_... on error
- */
- int ft_system_setup(void *blob, struct bd_info *bd);
- void set_working_fdt_addr(ulong addr);
- /**
- * shrink down the given blob to minimum size + some extrasize if required
- *
- * @param blob FDT blob to update
- * @param extrasize additional bytes needed
- * @return 0 if ok, or -FDT_ERR_... on error
- */
- int fdt_shrink_to_minimum(void *blob, uint extrasize);
- int fdt_increase_size(void *fdt, int add_len);
- int fdt_fixup_nor_flash_size(void *blob);
- struct node_info;
- #if defined(CONFIG_FDT_FIXUP_PARTITIONS)
- void fdt_fixup_mtdparts(void *fdt, const struct node_info *node_info,
- int node_info_size);
- #else
- static inline void fdt_fixup_mtdparts(void *fdt,
- const struct node_info *node_info,
- int node_info_size)
- {
- }
- #endif
- void fdt_del_node_and_alias(void *blob, const char *alias);
- /**
- * Translate an address from the DT into a CPU physical address
- *
- * The translation relies on the "ranges" property.
- *
- * @param blob Pointer to device tree blob
- * @param node_offset Node DT offset
- * @param in_addr Pointer to the address to translate
- * @return translated address or OF_BAD_ADDR on error
- */
- u64 fdt_translate_address(const void *blob, int node_offset,
- const __be32 *in_addr);
- /**
- * Translate a DMA address from the DT into a CPU physical address
- *
- * The translation relies on the "dma-ranges" property.
- *
- * @param blob Pointer to device tree blob
- * @param node_offset Node DT offset
- * @param in_addr Pointer to the DMA address to translate
- * @return translated DMA address or OF_BAD_ADDR on error
- */
- u64 fdt_translate_dma_address(const void *blob, int node_offset,
- const __be32 *in_addr);
- /**
- * Get DMA ranges for a specifc node, this is useful to perform bus->cpu and
- * cpu->bus address translations
- *
- * @param blob Pointer to device tree blob
- * @param node_offset Node DT offset
- * @param cpu Pointer to variable storing the range's cpu address
- * @param bus Pointer to variable storing the range's bus address
- * @param size Pointer to variable storing the range's size
- * @return translated DMA address or OF_BAD_ADDR on error
- */
- int fdt_get_dma_range(const void *blob, int node_offset, phys_addr_t *cpu,
- dma_addr_t *bus, u64 *size);
- int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
- phys_addr_t compat_off);
- int fdt_alloc_phandle(void *blob);
- int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle);
- unsigned int fdt_create_phandle(void *fdt, int nodeoffset);
- int fdt_add_edid(void *blob, const char *compat, unsigned char *buf);
- int fdt_verify_alias_address(void *fdt, int anode, const char *alias,
- u64 addr);
- u64 fdt_get_base_address(const void *fdt, int node);
- int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr,
- uint64_t *addr, uint64_t *len);
- enum fdt_status {
- FDT_STATUS_OKAY,
- FDT_STATUS_DISABLED,
- FDT_STATUS_FAIL,
- FDT_STATUS_FAIL_ERROR_CODE,
- };
- int fdt_set_node_status(void *fdt, int nodeoffset,
- enum fdt_status status, unsigned int error_code);
- static inline int fdt_status_okay(void *fdt, int nodeoffset)
- {
- return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_OKAY, 0);
- }
- static inline int fdt_status_disabled(void *fdt, int nodeoffset)
- {
- return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED, 0);
- }
- static inline int fdt_status_fail(void *fdt, int nodeoffset)
- {
- return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_FAIL, 0);
- }
- int fdt_set_status_by_alias(void *fdt, const char *alias,
- enum fdt_status status, unsigned int error_code);
- static inline int fdt_status_okay_by_alias(void *fdt, const char *alias)
- {
- return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_OKAY, 0);
- }
- static inline int fdt_status_disabled_by_alias(void *fdt, const char *alias)
- {
- return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_DISABLED, 0);
- }
- static inline int fdt_status_fail_by_alias(void *fdt, const char *alias)
- {
- return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_FAIL, 0);
- }
- /* Helper to read a big number; size is in cells (not bytes) */
- static inline u64 fdt_read_number(const fdt32_t *cell, int size)
- {
- u64 r = 0;
- while (size--)
- r = (r << 32) | fdt32_to_cpu(*(cell++));
- return r;
- }
- void fdt_support_default_count_cells(const void *blob, int parentoffset,
- int *addrc, int *sizec);
- int ft_verify_fdt(void *fdt);
- int arch_fixup_memory_node(void *blob);
- int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width,
- u32 height, u32 stride, const char *format);
- int fdt_overlay_apply_verbose(void *fdt, void *fdto);
- int fdt_valid(struct fdt_header **blobp);
- /**
- * fdt_get_cells_len() - Get the length of a type of cell in top-level nodes
- *
- * Returns the length of the cell type in bytes (4 or 8).
- *
- * @blob: Pointer to device tree blob
- * @nr_cells_name: Name to lookup, e.g. "#address-cells"
- */
- int fdt_get_cells_len(const void *blob, char *nr_cells_name);
- #endif /* ifdef CONFIG_OF_LIBFDT */
- #ifdef USE_HOSTCC
- int fdtdec_get_int(const void *blob, int node, const char *prop_name,
- int default_val);
- /*
- * Count child nodes of one parent node.
- *
- * @param blob FDT blob
- * @param node parent node
- * @return number of child node; 0 if there is not child node
- */
- int fdtdec_get_child_count(const void *blob, int node);
- #endif
- #ifdef CONFIG_FMAN_ENET
- int fdt_update_ethernet_dt(void *blob);
- #endif
- #ifdef CONFIG_FSL_MC_ENET
- void fdt_fixup_board_enet(void *blob);
- #endif
- #ifdef CONFIG_CMD_PSTORE
- void fdt_fixup_pstore(void *blob);
- #endif
- #endif /* ifndef __FDT_SUPPORT_H */
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