1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef BOOT_BOOT_H 3 #define BOOT_BOOT_H 4 5 #include <linux/types.h> 6 7 #define IPL_START 0x200 8 9 #ifndef __ASSEMBLY__ 10 11 struct machine_info { 12 unsigned char has_edat1 : 1; 13 unsigned char has_edat2 : 1; 14 unsigned char has_nx : 1; 15 }; 16 17 struct vmlinux_info { 18 unsigned long default_lma; 19 unsigned long entry; 20 unsigned long image_size; /* does not include .bss */ 21 unsigned long bss_size; /* uncompressed image .bss size */ 22 unsigned long bootdata_off; 23 unsigned long bootdata_size; 24 unsigned long bootdata_preserved_off; 25 unsigned long bootdata_preserved_size; 26 unsigned long dynsym_start; 27 unsigned long rela_dyn_start; 28 unsigned long rela_dyn_end; 29 unsigned long amode31_size; 30 unsigned long init_mm_off; 31 unsigned long swapper_pg_dir_off; 32 unsigned long invalid_pg_dir_off; 33 }; 34 35 void startup_kernel(void); 36 unsigned long detect_memory(unsigned long *safe_addr); 37 void mem_detect_set_usable_limit(unsigned long limit); 38 bool is_ipl_block_dump(void); 39 void store_ipl_parmblock(void); 40 unsigned long read_ipl_report(unsigned long safe_addr); 41 void setup_boot_command_line(void); 42 void parse_boot_command_line(void); 43 void verify_facilities(void); 44 void print_missing_facilities(void); 45 void sclp_early_setup_buffer(void); 46 void print_pgm_check_info(void); 47 unsigned long get_random_base(unsigned long safe_addr); 48 void setup_vmem(unsigned long asce_limit); 49 unsigned long vmem_estimate_memory_needs(unsigned long online_mem_total); 50 void __printf(1, 2) decompressor_printk(const char *fmt, ...); 51 void error(char *m); 52 53 extern struct machine_info machine; 54 55 /* Symbols defined by linker scripts */ 56 extern const char kernel_version[]; 57 extern unsigned long memory_limit; 58 extern unsigned long vmalloc_size; 59 extern int vmalloc_size_set; 60 extern int kaslr_enabled; 61 extern char __boot_data_start[], __boot_data_end[]; 62 extern char __boot_data_preserved_start[], __boot_data_preserved_end[]; 63 extern char _decompressor_syms_start[], _decompressor_syms_end[]; 64 extern char _stack_start[], _stack_end[]; 65 extern char _end[]; 66 extern unsigned char _compressed_start[]; 67 extern unsigned char _compressed_end[]; 68 extern struct vmlinux_info _vmlinux_info; 69 #define vmlinux _vmlinux_info 70 71 #define __abs_lowcore_pa(x) (((unsigned long)(x) - __abs_lowcore) % sizeof(struct lowcore)) 72 73 #endif /* __ASSEMBLY__ */ 74 #endif /* BOOT_BOOT_H */ 75