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 #ifdef CONFIG_PIE_BUILD 29 unsigned long dynsym_start; 30 unsigned long rela_dyn_start; 31 unsigned long rela_dyn_end; 32 #else 33 unsigned long got_start; 34 unsigned long got_end; 35 #endif 36 unsigned long amode31_size; 37 unsigned long init_mm_off; 38 unsigned long swapper_pg_dir_off; 39 unsigned long invalid_pg_dir_off; 40 #ifdef CONFIG_KASAN 41 unsigned long kasan_early_shadow_page_off; 42 unsigned long kasan_early_shadow_pte_off; 43 unsigned long kasan_early_shadow_pmd_off; 44 unsigned long kasan_early_shadow_pud_off; 45 unsigned long kasan_early_shadow_p4d_off; 46 #endif 47 }; 48 49 void startup_kernel(void); 50 unsigned long detect_max_physmem_end(void); 51 void detect_physmem_online_ranges(unsigned long max_physmem_end); 52 void physmem_set_usable_limit(unsigned long limit); 53 void physmem_reserve(enum reserved_range_type type, unsigned long addr, unsigned long size); 54 void physmem_free(enum reserved_range_type type); 55 /* for continuous/multiple allocations per type */ 56 unsigned long physmem_alloc_top_down(enum reserved_range_type type, unsigned long size, 57 unsigned long align); 58 /* for single allocations, 1 per type */ 59 unsigned long physmem_alloc_range(enum reserved_range_type type, unsigned long size, 60 unsigned long align, unsigned long min, unsigned long max, 61 bool die_on_oom); 62 unsigned long get_physmem_alloc_pos(void); 63 bool ipl_report_certs_intersects(unsigned long addr, unsigned long size, 64 unsigned long *intersection_start); 65 bool is_ipl_block_dump(void); 66 void store_ipl_parmblock(void); 67 int read_ipl_report(void); 68 void save_ipl_cert_comp_list(void); 69 void setup_boot_command_line(void); 70 void parse_boot_command_line(void); 71 void verify_facilities(void); 72 void print_missing_facilities(void); 73 void sclp_early_setup_buffer(void); 74 void print_pgm_check_info(void); 75 unsigned long randomize_within_range(unsigned long size, unsigned long align, 76 unsigned long min, unsigned long max); 77 void setup_vmem(unsigned long asce_limit); 78 void __printf(1, 2) decompressor_printk(const char *fmt, ...); 79 void print_stacktrace(unsigned long sp); 80 void error(char *m); 81 82 extern struct machine_info machine; 83 84 /* Symbols defined by linker scripts */ 85 extern const char kernel_version[]; 86 extern unsigned long memory_limit; 87 extern unsigned long vmalloc_size; 88 extern int vmalloc_size_set; 89 extern char __boot_data_start[], __boot_data_end[]; 90 extern char __boot_data_preserved_start[], __boot_data_preserved_end[]; 91 extern char __vmlinux_relocs_64_start[], __vmlinux_relocs_64_end[]; 92 extern char _decompressor_syms_start[], _decompressor_syms_end[]; 93 extern char _stack_start[], _stack_end[]; 94 extern char _end[], _decompressor_end[]; 95 extern unsigned char _compressed_start[]; 96 extern unsigned char _compressed_end[]; 97 extern struct vmlinux_info _vmlinux_info; 98 #define vmlinux _vmlinux_info 99 100 #define __abs_lowcore_pa(x) (((unsigned long)(x) - __abs_lowcore) % sizeof(struct lowcore)) 101 102 static inline bool intersects(unsigned long addr0, unsigned long size0, 103 unsigned long addr1, unsigned long size1) 104 { 105 return addr0 + size0 > addr1 && addr1 + size1 > addr0; 106 } 107 #endif /* __ASSEMBLY__ */ 108 #endif /* BOOT_BOOT_H */ 109