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_KASAN
32 unsigned long kasan_early_shadow_page_off;
33 unsigned long kasan_early_shadow_pte_off;
34 unsigned long kasan_early_shadow_pmd_off;
35 unsigned long kasan_early_shadow_pud_off;
36 unsigned long kasan_early_shadow_p4d_off;
37 #endif
38 };
39
40 void startup_kernel(void);
41 unsigned long detect_max_physmem_end(void);
42 void detect_physmem_online_ranges(unsigned long max_physmem_end);
43 void physmem_set_usable_limit(unsigned long limit);
44 void physmem_reserve(enum reserved_range_type type, unsigned long addr, unsigned long size);
45 void physmem_free(enum reserved_range_type type);
46 /* for continuous/multiple allocations per type */
47 unsigned long physmem_alloc_or_die(enum reserved_range_type type, unsigned long size,
48 unsigned long align);
49 unsigned long physmem_alloc(enum reserved_range_type type, unsigned long size,
50 unsigned long align, bool die_on_oom);
51 /* for single allocations, 1 per type */
52 unsigned long physmem_alloc_range(enum reserved_range_type type, unsigned long size,
53 unsigned long align, unsigned long min, unsigned long max,
54 bool die_on_oom);
55 unsigned long get_physmem_alloc_pos(void);
56 void dump_physmem_reserved(void);
57 bool ipl_report_certs_intersects(unsigned long addr, unsigned long size,
58 unsigned long *intersection_start);
59 bool is_ipl_block_dump(void);
60 void store_ipl_parmblock(void);
61 int read_ipl_report(void);
62 void save_ipl_cert_comp_list(void);
63 void setup_boot_command_line(void);
64 void parse_boot_command_line(void);
65 void verify_facilities(void);
66 void print_missing_facilities(void);
67 void sclp_early_setup_buffer(void);
68 void alt_debug_setup(char *str);
69 void do_pgm_check(struct pt_regs *regs);
70 unsigned long randomize_within_range(unsigned long size, unsigned long align,
71 unsigned long min, unsigned long max);
72 void setup_vmem(unsigned long kernel_start, unsigned long kernel_end, unsigned long asce_limit);
73 int __printf(1, 2) boot_printk(const char *fmt, ...);
74 void print_stacktrace(unsigned long sp);
75 void error(char *m);
76 int get_random(unsigned long limit, unsigned long *value);
77 void boot_rb_dump(void);
78 void __noreturn jump_to_kernel(psw_t *psw);
79
80 #ifndef boot_fmt
81 #define boot_fmt(fmt) fmt
82 #endif
83
84 #define boot_emerg(fmt, ...) boot_printk(KERN_EMERG boot_fmt(fmt), ##__VA_ARGS__)
85 #define boot_alert(fmt, ...) boot_printk(KERN_ALERT boot_fmt(fmt), ##__VA_ARGS__)
86 #define boot_crit(fmt, ...) boot_printk(KERN_CRIT boot_fmt(fmt), ##__VA_ARGS__)
87 #define boot_err(fmt, ...) boot_printk(KERN_ERR boot_fmt(fmt), ##__VA_ARGS__)
88 #define boot_warn(fmt, ...) boot_printk(KERN_WARNING boot_fmt(fmt), ##__VA_ARGS__)
89 #define boot_notice(fmt, ...) boot_printk(KERN_NOTICE boot_fmt(fmt), ##__VA_ARGS__)
90 #define boot_info(fmt, ...) boot_printk(KERN_INFO boot_fmt(fmt), ##__VA_ARGS__)
91 #define boot_debug(fmt, ...) boot_printk(KERN_DEBUG boot_fmt(fmt), ##__VA_ARGS__)
92
93 #define boot_panic(...) do { \
94 boot_emerg(__VA_ARGS__); \
95 print_stacktrace(current_frame_address()); \
96 boot_emerg(" -- System halted\n"); \
97 disabled_wait(); \
98 } while (0)
99
100 extern struct machine_info machine;
101 extern int boot_console_loglevel;
102 extern bool boot_ignore_loglevel;
103
104 /* Symbols defined by linker scripts */
105 extern const char kernel_version[];
106 extern unsigned long memory_limit;
107 extern unsigned long vmalloc_size;
108 extern int vmalloc_size_set;
109 extern char __boot_data_start[], __boot_data_end[];
110 extern char __boot_data_preserved_start[], __boot_data_preserved_end[];
111 extern char __vmlinux_relocs_64_start[], __vmlinux_relocs_64_end[];
112 extern char _decompressor_syms_start[], _decompressor_syms_end[];
113 extern char _stack_start[], _stack_end[];
114 extern char _end[], _decompressor_end[];
115 extern unsigned char _compressed_start[];
116 extern unsigned char _compressed_end[];
117 extern struct vmlinux_info _vmlinux_info;
118
119 #define vmlinux _vmlinux_info
120
121 #define __lowcore_pa(x) ((unsigned long)(x) % sizeof(struct lowcore))
122 #define __abs_lowcore_pa(x) (((unsigned long)(x) - __abs_lowcore) % sizeof(struct lowcore))
123 #define __kernel_va(x) ((void *)((unsigned long)(x) - __kaslr_offset_phys + __kaslr_offset))
124 #define __kernel_pa(x) ((unsigned long)(x) - __kaslr_offset + __kaslr_offset_phys)
125 #define __identity_va(x) ((void *)((unsigned long)(x) + __identity_base))
126 #define __identity_pa(x) ((unsigned long)(x) - __identity_base)
127
intersects(unsigned long addr0,unsigned long size0,unsigned long addr1,unsigned long size1)128 static inline bool intersects(unsigned long addr0, unsigned long size0,
129 unsigned long addr1, unsigned long size1)
130 {
131 return addr0 + size0 > addr1 && addr1 + size1 > addr0;
132 }
133 #endif /* __ASSEMBLER__ */
134 #endif /* BOOT_BOOT_H */
135