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 __ASSEMBLER__ 10 11 #include <linux/printk.h> 12 #include <asm/physmem_info.h> 13 #include <asm/stacktrace.h> 14 15 struct vmlinux_info { 16 unsigned long entry; 17 unsigned long image_size; /* does not include .bss */ 18 unsigned long bss_size; /* uncompressed image .bss size */ 19 unsigned long bootdata_off; 20 unsigned long bootdata_size; 21 unsigned long bootdata_preserved_off; 22 unsigned long bootdata_preserved_size; 23 unsigned long got_start; 24 unsigned long got_end; 25 unsigned long amode31_size; 26 unsigned long init_mm_off; 27 unsigned long swapper_pg_dir_off; 28 unsigned long invalid_pg_dir_off; 29 unsigned long alt_instructions; 30 unsigned long alt_instructions_end; 31 #ifdef CONFIG_STACKPROTECTOR 32 unsigned long stack_prot_start; 33 unsigned long stack_prot_end; 34 #endif 35 #ifdef CONFIG_KASAN 36 unsigned long kasan_early_shadow_page_off; 37 unsigned long kasan_early_shadow_pte_off; 38 unsigned long kasan_early_shadow_pmd_off; 39 unsigned long kasan_early_shadow_pud_off; 40 unsigned long kasan_early_shadow_p4d_off; 41 #endif 42 }; 43 44 void startup_kernel(void); 45 unsigned long detect_max_physmem_end(void); 46 void detect_physmem_online_ranges(unsigned long max_physmem_end); 47 void physmem_set_usable_limit(unsigned long limit); 48 void physmem_reserve(enum reserved_range_type type, unsigned long addr, unsigned long size); 49 void physmem_free(enum reserved_range_type type); 50 /* for continuous/multiple allocations per type */ 51 unsigned long physmem_alloc_or_die(enum reserved_range_type type, unsigned long size, 52 unsigned long align); 53 unsigned long physmem_alloc(enum reserved_range_type type, unsigned long size, 54 unsigned long align, bool die_on_oom); 55 /* for single allocations, 1 per type */ 56 unsigned long physmem_alloc_range(enum reserved_range_type type, unsigned long size, 57 unsigned long align, unsigned long min, unsigned long max, 58 bool die_on_oom); 59 unsigned long get_physmem_alloc_pos(void); 60 void dump_physmem_reserved(void); 61 bool ipl_report_certs_intersects(unsigned long addr, unsigned long size, 62 unsigned long *intersection_start); 63 bool is_ipl_block_dump(void); 64 void store_ipl_parmblock(void); 65 int read_ipl_report(void); 66 void save_ipl_cert_comp_list(void); 67 void setup_boot_command_line(void); 68 void parse_boot_command_line(void); 69 void verify_facilities(void); 70 void print_missing_facilities(void); 71 void sclp_early_setup_buffer(void); 72 void alt_debug_setup(char *str); 73 void do_pgm_check(struct pt_regs *regs); 74 unsigned long randomize_within_range(unsigned long size, unsigned long align, 75 unsigned long min, unsigned long max); 76 void setup_vmem(unsigned long kernel_start, unsigned long kernel_end, unsigned long asce_limit); 77 int __printf(1, 2) boot_printk(const char *fmt, ...); 78 void print_stacktrace(unsigned long sp); 79 void error(char *m); 80 int get_random(unsigned long limit, unsigned long *value); 81 void boot_rb_dump(void); 82 void __noreturn jump_to_kernel(psw_t *psw); 83 84 #ifndef boot_fmt 85 #define boot_fmt(fmt) fmt 86 #endif 87 88 #define boot_emerg(fmt, ...) boot_printk(KERN_EMERG boot_fmt(fmt), ##__VA_ARGS__) 89 #define boot_alert(fmt, ...) boot_printk(KERN_ALERT boot_fmt(fmt), ##__VA_ARGS__) 90 #define boot_crit(fmt, ...) boot_printk(KERN_CRIT boot_fmt(fmt), ##__VA_ARGS__) 91 #define boot_err(fmt, ...) boot_printk(KERN_ERR boot_fmt(fmt), ##__VA_ARGS__) 92 #define boot_warn(fmt, ...) boot_printk(KERN_WARNING boot_fmt(fmt), ##__VA_ARGS__) 93 #define boot_notice(fmt, ...) boot_printk(KERN_NOTICE boot_fmt(fmt), ##__VA_ARGS__) 94 #define boot_info(fmt, ...) boot_printk(KERN_INFO boot_fmt(fmt), ##__VA_ARGS__) 95 #define boot_debug(fmt, ...) boot_printk(KERN_DEBUG boot_fmt(fmt), ##__VA_ARGS__) 96 97 #define boot_panic(...) do { \ 98 boot_emerg(__VA_ARGS__); \ 99 print_stacktrace(current_frame_address()); \ 100 boot_emerg(" -- System halted\n"); \ 101 disabled_wait(); \ 102 } while (0) 103 104 extern struct machine_info machine; 105 extern int boot_console_loglevel; 106 extern bool boot_ignore_loglevel; 107 108 /* Symbols defined by linker scripts */ 109 extern const char kernel_version[]; 110 extern unsigned long memory_limit; 111 extern unsigned long vmalloc_size; 112 extern int vmalloc_size_set; 113 extern char __boot_data_start[], __boot_data_end[]; 114 extern char __boot_data_preserved_start[], __boot_data_preserved_end[]; 115 extern char __vmlinux_relocs_64_start[], __vmlinux_relocs_64_end[]; 116 extern char _decompressor_syms_start[], _decompressor_syms_end[]; 117 extern char _stack_start[], _stack_end[]; 118 extern char _end[], _decompressor_end[]; 119 extern unsigned char _compressed_start[]; 120 extern unsigned char _compressed_end[]; 121 extern struct vmlinux_info _vmlinux_info; 122 123 #define vmlinux _vmlinux_info 124 125 #define __lowcore_pa(x) ((unsigned long)(x) % sizeof(struct lowcore)) 126 #define __abs_lowcore_pa(x) (((unsigned long)(x) - __abs_lowcore) % sizeof(struct lowcore)) 127 #define __kernel_va(x) ((void *)((unsigned long)(x) - __kaslr_offset_phys + __kaslr_offset)) 128 #define __kernel_pa(x) ((unsigned long)(x) - __kaslr_offset + __kaslr_offset_phys) 129 #define __identity_va(x) ((void *)((unsigned long)(x) + __identity_base)) 130 #define __identity_pa(x) ((unsigned long)(x) - __identity_base) 131 132 static inline bool intersects(unsigned long addr0, unsigned long size0, 133 unsigned long addr1, unsigned long size1) 134 { 135 return addr0 + size0 > addr1 && addr1 + size1 > addr0; 136 } 137 #endif /* __ASSEMBLER__ */ 138 #endif /* BOOT_BOOT_H */ 139