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 #include <asm/physmem_info.h> 12 13 struct machine_info { 14 unsigned char has_edat1 : 1; 15 unsigned char has_edat2 : 1; 16 unsigned char has_nx : 1; 17 }; 18 19 struct vmlinux_info { 20 unsigned long default_lma; 21 unsigned long entry; 22 unsigned long image_size; /* does not include .bss */ 23 unsigned long bss_size; /* uncompressed image .bss size */ 24 unsigned long bootdata_off; 25 unsigned long bootdata_size; 26 unsigned long bootdata_preserved_off; 27 unsigned long bootdata_preserved_size; 28 unsigned long dynsym_start; 29 unsigned long rela_dyn_start; 30 unsigned long rela_dyn_end; 31 unsigned long amode31_size; 32 unsigned long init_mm_off; 33 unsigned long swapper_pg_dir_off; 34 unsigned long invalid_pg_dir_off; 35 }; 36 37 void startup_kernel(void); 38 unsigned long detect_max_physmem_end(void); 39 void detect_physmem_online_ranges(unsigned long max_physmem_end); 40 void physmem_set_usable_limit(unsigned long limit); 41 void physmem_reserve(enum reserved_range_type type, unsigned long addr, unsigned long size); 42 void physmem_free(enum reserved_range_type type); 43 /* for continuous/multiple allocations per type */ 44 unsigned long physmem_alloc_top_down(enum reserved_range_type type, unsigned long size, 45 unsigned long align); 46 /* for single allocations, 1 per type */ 47 unsigned long physmem_alloc_range(enum reserved_range_type type, unsigned long size, 48 unsigned long align, unsigned long min, unsigned long max, 49 bool die_on_oom); 50 bool ipl_report_certs_intersects(unsigned long addr, unsigned long size, 51 unsigned long *intersection_start); 52 bool is_ipl_block_dump(void); 53 void store_ipl_parmblock(void); 54 int read_ipl_report(void); 55 void save_ipl_cert_comp_list(void); 56 void setup_boot_command_line(void); 57 void parse_boot_command_line(void); 58 void verify_facilities(void); 59 void print_missing_facilities(void); 60 void sclp_early_setup_buffer(void); 61 void print_pgm_check_info(void); 62 unsigned long get_random_base(void); 63 void setup_vmem(unsigned long asce_limit); 64 void __printf(1, 2) decompressor_printk(const char *fmt, ...); 65 void print_stacktrace(unsigned long sp); 66 void error(char *m); 67 68 extern struct machine_info machine; 69 70 /* Symbols defined by linker scripts */ 71 extern const char kernel_version[]; 72 extern unsigned long memory_limit; 73 extern unsigned long vmalloc_size; 74 extern int vmalloc_size_set; 75 extern int kaslr_enabled; 76 extern char __boot_data_start[], __boot_data_end[]; 77 extern char __boot_data_preserved_start[], __boot_data_preserved_end[]; 78 extern char _decompressor_syms_start[], _decompressor_syms_end[]; 79 extern char _stack_start[], _stack_end[]; 80 extern char _end[], _decompressor_end[]; 81 extern unsigned char _compressed_start[]; 82 extern unsigned char _compressed_end[]; 83 extern struct vmlinux_info _vmlinux_info; 84 #define vmlinux _vmlinux_info 85 86 #define __abs_lowcore_pa(x) (((unsigned long)(x) - __abs_lowcore) % sizeof(struct lowcore)) 87 88 static inline bool intersects(unsigned long addr0, unsigned long size0, 89 unsigned long addr1, unsigned long size1) 90 { 91 return addr0 + size0 > addr1 && addr1 + size1 > addr0; 92 } 93 #endif /* __ASSEMBLY__ */ 94 #endif /* BOOT_BOOT_H */ 95