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