X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Ffdt_support.h;h=8ec461af6c3d74387806c7007703cc1ddf539c0b;hb=64cfeda8ae2e95751c5d2dfa4dc4a906478ae2f6;hp=46bf83f671a264bd6f494c104d62e4055fdbe117;hpb=f9747a5a5d34d39843f8007b4230a86bcb852461;p=platform%2Fkernel%2Fu-boot.git diff --git a/include/fdt_support.h b/include/fdt_support.h index 46bf83f..8ec461a 100644 --- a/include/fdt_support.h +++ b/include/fdt_support.h @@ -1,16 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * (C) Copyright 2007 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com - * - * SPDX-License-Identifier: GPL-2.0+ */ #ifndef __FDT_SUPPORT_H #define __FDT_SUPPORT_H -#ifdef CONFIG_OF_LIBFDT +#if defined(CONFIG_OF_LIBFDT) && !defined(USE_HOSTCC) + +#include +#include + +/** + * 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); -#include +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); @@ -95,6 +109,7 @@ int fdt_fixup_memory(void *blob, u64 start, u64 size); */ #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) @@ -122,9 +137,9 @@ void fdt_fixup_qe_firmware(void *fdt); 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, bd_t *bd); +void fsl_fdt_fixup_dr_usb(void *blob, struct bd_info *bd); #else -static inline void fsl_fdt_fixup_dr_usb(void *blob, bd_t *bd) {} +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) @@ -145,11 +160,12 @@ static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {} * @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) + * @param arch architecture (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); + const char *type, const char *os, const char *arch); #ifdef CONFIG_PCI #include @@ -165,10 +181,20 @@ int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name); * This function is called if CONFIG_OF_BOARD_SETUP is defined * * @param blob FDT blob to update - * @param bd_t Pointer to board data + * @param bd Pointer to board data * @return 0 if ok, or -FDT_ERR_... on error */ -int ft_board_setup(void *blob, bd_t *bd); +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 @@ -176,9 +202,7 @@ int ft_board_setup(void *blob, bd_t *bd); * 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, bd_t *bd); -void ft_cpu_setup(void *blob, bd_t *bd); -void ft_pci_setup(void *blob, bd_t *bd); +void ft_board_setup_ex(void *blob, struct bd_info *bd); /** * Add system-specific data to the FDT before booting the OS. @@ -187,10 +211,10 @@ void ft_pci_setup(void *blob, bd_t *bd); * This function is called if CONFIG_OF_SYSTEM_SETUP is defined * * @param blob FDT blob to update - * @param bd_t Pointer to board data + * @param bd Pointer to board data * @return 0 if ok, or -FDT_ERR_... on error */ -int ft_system_setup(void *blob, bd_t *bd); +int ft_system_setup(void *blob, struct bd_info *bd); void set_working_fdt_addr(ulong addr); @@ -204,23 +228,72 @@ void set_working_fdt_addr(ulong addr); int fdt_shrink_to_minimum(void *blob, uint extrasize); int fdt_increase_size(void *fdt, int add_len); +int fdt_delete_disabled_nodes(void *blob); + int fdt_fixup_nor_flash_size(void *blob); +struct node_info; #if defined(CONFIG_FDT_FIXUP_PARTITIONS) -void fdt_fixup_mtdparts(void *fdt, void *node_info, int node_info_size); +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, void *node_info, - int node_info_size) {} +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_node_offset_by_pathf(void *blob, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle); unsigned int fdt_create_phandle(void *fdt, int nodeoffset); +unsigned int fdt_create_phandle_by_compatible(void *fdt, const char *compat); +unsigned int fdt_create_phandle_by_pathf(void *fdt, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); int fdt_add_edid(void *blob, const char *compat, unsigned char *buf); int fdt_verify_alias_address(void *fdt, int anode, const char *alias, @@ -233,38 +306,61 @@ 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); +int fdt_set_node_status(void *fdt, int nodeoffset, enum fdt_status status); static inline int fdt_status_okay(void *fdt, int nodeoffset) { - return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_OKAY, 0); + return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_OKAY); } static inline int fdt_status_disabled(void *fdt, int nodeoffset) { - return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED, 0); + return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED); } static inline int fdt_status_fail(void *fdt, int nodeoffset) { - return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_FAIL, 0); + return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_FAIL); } int fdt_set_status_by_alias(void *fdt, const char *alias, - enum fdt_status status, unsigned int error_code); + enum fdt_status status); 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); + return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_OKAY); } 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); + return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_DISABLED); } 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); + return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_FAIL); +} + +int fdt_set_status_by_compatible(void *fdt, const char *compat, + enum fdt_status status); +static inline int fdt_status_okay_by_compatible(void *fdt, const char *compat) +{ + return fdt_set_status_by_compatible(fdt, compat, FDT_STATUS_OKAY); +} +static inline int fdt_status_disabled_by_compatible(void *fdt, + const char *compat) +{ + return fdt_set_status_by_compatible(fdt, compat, FDT_STATUS_DISABLED); +} +static inline int fdt_status_fail_by_compatible(void *fdt, const char *compat) +{ + return fdt_set_status_by_compatible(fdt, compat, FDT_STATUS_FAIL); } +int fdt_set_status_by_pathf(void *fdt, enum fdt_status status, const char *fmt, + ...) __attribute__ ((format (printf, 3, 4))); +#define fdt_status_okay_by_pathf(fdt, fmt, ...) \ + fdt_set_status_by_pathf((fdt), FDT_STATUS_OKAY, (fmt), ##__VA_ARGS__) +#define fdt_status_disabled_by_pathf(fdt, fmt, ...) \ + fdt_set_status_by_pathf((fdt), FDT_STATUS_DISABLED, (fmt), ##__VA_ARGS__) +#define fdt_status_fail_by_pathf(fdt, fmt, ...) \ + fdt_set_status_by_pathf((fdt), FDT_STATUS_FAIL, (fmt), ##__VA_ARGS__) + /* Helper to read a big number; size is in cells (not bytes) */ static inline u64 fdt_read_number(const fdt32_t *cell, int size) { @@ -284,11 +380,32 @@ int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width, 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); @@ -296,4 +413,7 @@ int fdt_update_ethernet_dt(void *blob); #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 */