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