1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2f4f75ad5SArd Biesheuvel 3f4f75ad5SArd Biesheuvel #ifndef _DRIVERS_FIRMWARE_EFI_EFISTUB_H 4f4f75ad5SArd Biesheuvel #define _DRIVERS_FIRMWARE_EFI_EFISTUB_H 5f4f75ad5SArd Biesheuvel 6f4f75ad5SArd Biesheuvel /* error code which can't be mistaken for valid address */ 7f4f75ad5SArd Biesheuvel #define EFI_ERROR (~0UL) 8f4f75ad5SArd Biesheuvel 907e83dbbSArd Biesheuvel /* 1007e83dbbSArd Biesheuvel * __init annotations should not be used in the EFI stub, since the code is 1107e83dbbSArd Biesheuvel * either included in the decompressor (x86, ARM) where they have no effect, 1207e83dbbSArd Biesheuvel * or the whole stub is __init annotated at the section level (arm64), by 1307e83dbbSArd Biesheuvel * renaming the sections, in which case the __init annotation will be 1407e83dbbSArd Biesheuvel * redundant, and will result in section names like .init.init.text, and our 1507e83dbbSArd Biesheuvel * linker script does not expect that. 1607e83dbbSArd Biesheuvel */ 1707e83dbbSArd Biesheuvel #undef __init 1807e83dbbSArd Biesheuvel 19a6a14469SArd Biesheuvel /* 20a6a14469SArd Biesheuvel * Allow the platform to override the allocation granularity: this allows 21a6a14469SArd Biesheuvel * systems that have the capability to run with a larger page size to deal 22a6a14469SArd Biesheuvel * with the allocations for initrd and fdt more efficiently. 23a6a14469SArd Biesheuvel */ 24a6a14469SArd Biesheuvel #ifndef EFI_ALLOC_ALIGN 25a6a14469SArd Biesheuvel #define EFI_ALLOC_ALIGN EFI_PAGE_SIZE 26a6a14469SArd Biesheuvel #endif 27a6a14469SArd Biesheuvel 2860f38de7SArd Biesheuvel extern int __pure nokaslr(void); 29eeff7d63SArd Biesheuvel extern int __pure is_quiet(void); 30eeff7d63SArd Biesheuvel 31eeff7d63SArd Biesheuvel #define pr_efi(sys_table, msg) do { \ 32eeff7d63SArd Biesheuvel if (!is_quiet()) efi_printk(sys_table, "EFI stub: "msg); \ 33eeff7d63SArd Biesheuvel } while (0) 34eeff7d63SArd Biesheuvel 35eeff7d63SArd Biesheuvel #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) 3660f38de7SArd Biesheuvel 37f4f75ad5SArd Biesheuvel void efi_char16_printk(efi_system_table_t *, efi_char16_t *); 38f4f75ad5SArd Biesheuvel 39f4f75ad5SArd Biesheuvel unsigned long get_dram_base(efi_system_table_t *sys_table_arg); 40f4f75ad5SArd Biesheuvel 41f4f75ad5SArd Biesheuvel efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table, 42f4f75ad5SArd Biesheuvel void *handle, 43f4f75ad5SArd Biesheuvel unsigned long *new_fdt_addr, 44f4f75ad5SArd Biesheuvel unsigned long max_addr, 45f4f75ad5SArd Biesheuvel u64 initrd_addr, u64 initrd_size, 46f4f75ad5SArd Biesheuvel char *cmdline_ptr, 47f4f75ad5SArd Biesheuvel unsigned long fdt_addr, 48f4f75ad5SArd Biesheuvel unsigned long fdt_size); 49f4f75ad5SArd Biesheuvel 50a643375fSArd Biesheuvel void *get_fdt(efi_system_table_t *sys_table, unsigned long *fdt_size); 51f4f75ad5SArd Biesheuvel 52f3cdfd23SArd Biesheuvel void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size, 53f3cdfd23SArd Biesheuvel unsigned long desc_size, efi_memory_desc_t *runtime_map, 54f3cdfd23SArd Biesheuvel int *count); 55f3cdfd23SArd Biesheuvel 56e4fbf476SArd Biesheuvel efi_status_t efi_get_random_bytes(efi_system_table_t *sys_table, 57e4fbf476SArd Biesheuvel unsigned long size, u8 *out); 58e4fbf476SArd Biesheuvel 592ddbfc81SArd Biesheuvel efi_status_t efi_random_alloc(efi_system_table_t *sys_table_arg, 602ddbfc81SArd Biesheuvel unsigned long size, unsigned long align, 612ddbfc81SArd Biesheuvel unsigned long *addr, unsigned long random_seed); 622ddbfc81SArd Biesheuvel 63b9d6769bSArd Biesheuvel efi_status_t check_platform_features(efi_system_table_t *sys_table_arg); 64b9d6769bSArd Biesheuvel 65568bc4e8SArd Biesheuvel efi_status_t efi_random_get_seed(efi_system_table_t *sys_table_arg); 66568bc4e8SArd Biesheuvel 67ac9aff8eSIngo Molnar /* Helper macros for the usual case of using simple C variables: */ 68ac9aff8eSIngo Molnar #ifndef fdt_setprop_inplace_var 69ac9aff8eSIngo Molnar #define fdt_setprop_inplace_var(fdt, node_offset, name, var) \ 70ac9aff8eSIngo Molnar fdt_setprop_inplace((fdt), (node_offset), (name), &(var), sizeof(var)) 71ac9aff8eSIngo Molnar #endif 72ac9aff8eSIngo Molnar 73ac9aff8eSIngo Molnar #ifndef fdt_setprop_var 74ac9aff8eSIngo Molnar #define fdt_setprop_var(fdt, node_offset, name, var) \ 75ac9aff8eSIngo Molnar fdt_setprop((fdt), (node_offset), (name), &(var), sizeof(var)) 76ac9aff8eSIngo Molnar #endif 77ac9aff8eSIngo Molnar 78f4f75ad5SArd Biesheuvel #endif 79