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
15struct 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
44void startup_kernel(void);
45unsigned long detect_max_physmem_end(void);
46void detect_physmem_online_ranges(unsigned long max_physmem_end);
47void physmem_set_usable_limit(unsigned long limit);
48void physmem_reserve(enum reserved_range_type type, unsigned long addr, unsigned long size);
49void physmem_free(enum reserved_range_type type);
50/* for continuous/multiple allocations per type */
51unsigned long physmem_alloc_or_die(enum reserved_range_type type, unsigned long size,
52 unsigned long align);
53unsigned 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 */
56unsigned 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);
59unsigned long get_physmem_alloc_pos(void);
60void dump_physmem_reserved(void);
61bool ipl_report_certs_intersects(unsigned long addr, unsigned long size,
62 unsigned long *intersection_start);
63bool is_ipl_block_dump(void);
64void store_ipl_parmblock(void);
65int read_ipl_report(void);
66void save_ipl_cert_comp_list(void);
67void setup_boot_command_line(void);
68void parse_boot_command_line(void);
69void verify_facilities(void);
70void print_missing_facilities(void);
71void sclp_early_setup_buffer(void);
72void alt_debug_setup(char *str);
73void do_pgm_check(struct pt_regs *regs);
74unsigned long randomize_within_range(unsigned long size, unsigned long align,
75 unsigned long min, unsigned long max);
76void setup_vmem(unsigned long kernel_start, unsigned long kernel_end, unsigned long asce_limit);
77int __printf(1, 2) boot_printk(const char *fmt, ...);
78void print_stacktrace(unsigned long sp);
79void error(char *m);
80int get_random(unsigned long limit, unsigned long *value);
81void boot_rb_dump(void);
82void __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
104extern struct machine_info machine;
105extern int boot_console_loglevel;
106extern bool boot_ignore_loglevel;
107
108/* Symbols defined by linker scripts */
109extern const char kernel_version[];
110extern unsigned long memory_limit;
111extern unsigned long vmalloc_size;
112extern int vmalloc_size_set;
113extern char __boot_data_start[], __boot_data_end[];
114extern char __boot_data_preserved_start[], __boot_data_preserved_end[];
115extern char __vmlinux_relocs_64_start[], __vmlinux_relocs_64_end[];
116extern char _decompressor_syms_start[], _decompressor_syms_end[];
117extern char _stack_start[], _stack_end[];
118extern char _end[], _decompressor_end[];
119extern unsigned char _compressed_start[];
120extern unsigned char _compressed_end[];
121extern 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
132static 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

source code of linux/arch/s390/boot/boot.h