/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _DRIVERS_FIRMWARE_EFI_EFISTUB_H #define _DRIVERS_FIRMWARE_EFI_EFISTUB_H /* error code which can't be mistaken for valid address */ #define EFI_ERROR (~0UL) /* * __init annotations should not be used in the EFI stub, since the code is * either included in the decompressor (x86, ARM) where they have no effect, * or the whole stub is __init annotated at the section level (arm64), by * renaming the sections, in which case the __init annotation will be * redundant, and will result in section names like .init.init.text, and our * linker script does not expect that. */ #undef __init /* * Allow the platform to override the allocation granularity: this allows * systems that have the capability to run with a larger page size to deal * with the allocations for initrd and fdt more efficiently. */ #ifndef EFI_ALLOC_ALIGN #define EFI_ALLOC_ALIGN EFI_PAGE_SIZE #endif extern int __pure nokaslr(void); extern int __pure is_quiet(void); extern int __pure novamap(void); #define pr_efi(sys_table, msg) do { \ if (!is_quiet()) efi_printk(sys_table, "EFI stub: "msg); \ } while (0) #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) void efi_char16_printk(efi_system_table_t *, efi_char16_t *); unsigned long get_dram_base(efi_system_table_t *sys_table_arg); efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table, void *handle, unsigned long *new_fdt_addr, unsigned long max_addr, u64 initrd_addr, u64 initrd_size, char *cmdline_ptr, unsigned long fdt_addr, unsigned long fdt_size); void *get_fdt(efi_system_table_t *sys_table, unsigned long *fdt_size); void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size, unsigned long desc_size, efi_memory_desc_t *runtime_map, int *count); efi_status_t efi_get_random_bytes(efi_system_table_t *sys_table, unsigned long size, u8 *out); efi_status_t efi_random_alloc(efi_system_table_t *sys_table_arg, unsigned long size, unsigned long align, unsigned long *addr, unsigned long random_seed); efi_status_t check_platform_features(efi_system_table_t *sys_table_arg); efi_status_t efi_random_get_seed(efi_system_table_t *sys_table_arg); /* Helper macros for the usual case of using simple C variables: */ #ifndef fdt_setprop_inplace_var #define fdt_setprop_inplace_var(fdt, node_offset, name, var) \ fdt_setprop_inplace((fdt), (node_offset), (name), &(var), sizeof(var)) #endif #ifndef fdt_setprop_var #define fdt_setprop_var(fdt, node_offset, name, var) \ fdt_setprop((fdt), (node_offset), (name), &(var), sizeof(var)) #endif #endif