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 <linux/printk.h>
12 #include <asm/physmem_info.h>
13
14 struct machine_info {
15 unsigned char has_edat1 : 1;
16 unsigned char has_edat2 : 1;
17 };
18
19 struct vmlinux_info {
20 unsigned long entry;
21 unsigned long image_size; /* does not include .bss */
22 unsigned long bss_size; /* uncompressed image .bss size */
23 unsigned long bootdata_off;
24 unsigned long bootdata_size;
25 unsigned long bootdata_preserved_off;
26 unsigned long bootdata_preserved_size;
27 unsigned long got_start;
28 unsigned long got_end;
29 unsigned long amode31_size;
30 unsigned long init_mm_off;
31 unsigned long swapper_pg_dir_off;
32 unsigned long invalid_pg_dir_off;
33 unsigned long alt_instructions;
34 unsigned long alt_instructions_end;
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 print_pgm_check_info(void);
73 unsigned long randomize_within_range(unsigned long size, unsigned long align,
74 unsigned long min, unsigned long max);
75 void setup_vmem(unsigned long kernel_start, unsigned long kernel_end, unsigned long asce_limit);
76 int __printf(1, 2) boot_printk(const char *fmt, ...);
77 void print_stacktrace(unsigned long sp);
78 void error(char *m);
79 int get_random(unsigned long limit, unsigned long *value);
80 void boot_rb_dump(void);
81
82 #ifndef boot_fmt
83 #define boot_fmt(fmt) fmt
84 #endif
85
86 #define boot_emerg(fmt, ...) boot_printk(KERN_EMERG boot_fmt(fmt), ##__VA_ARGS__)
87 #define boot_alert(fmt, ...) boot_printk(KERN_ALERT boot_fmt(fmt), ##__VA_ARGS__)
88 #define boot_crit(fmt, ...) boot_printk(KERN_CRIT boot_fmt(fmt), ##__VA_ARGS__)
89 #define boot_err(fmt, ...) boot_printk(KERN_ERR boot_fmt(fmt), ##__VA_ARGS__)
90 #define boot_warn(fmt, ...) boot_printk(KERN_WARNING boot_fmt(fmt), ##__VA_ARGS__)
91 #define boot_notice(fmt, ...) boot_printk(KERN_NOTICE boot_fmt(fmt), ##__VA_ARGS__)
92 #define boot_info(fmt, ...) boot_printk(KERN_INFO boot_fmt(fmt), ##__VA_ARGS__)
93 #define boot_debug(fmt, ...) boot_printk(KERN_DEBUG boot_fmt(fmt), ##__VA_ARGS__)
94
95 extern struct machine_info machine;
96 extern int boot_console_loglevel;
97 extern bool boot_ignore_loglevel;
98
99 /* Symbols defined by linker scripts */
100 extern const char kernel_version[];
101 extern unsigned long memory_limit;
102 extern unsigned long vmalloc_size;
103 extern int vmalloc_size_set;
104 extern char __boot_data_start[], __boot_data_end[];
105 extern char __boot_data_preserved_start[], __boot_data_preserved_end[];
106 extern char __vmlinux_relocs_64_start[], __vmlinux_relocs_64_end[];
107 extern char _decompressor_syms_start[], _decompressor_syms_end[];
108 extern char _stack_start[], _stack_end[];
109 extern char _end[], _decompressor_end[];
110 extern unsigned char _compressed_start[];
111 extern unsigned char _compressed_end[];
112 extern struct vmlinux_info _vmlinux_info;
113
114 #define vmlinux _vmlinux_info
115
116 #define __lowcore_pa(x) ((unsigned long)(x) % sizeof(struct lowcore))
117 #define __abs_lowcore_pa(x) (((unsigned long)(x) - __abs_lowcore) % sizeof(struct lowcore))
118 #define __kernel_va(x) ((void *)((unsigned long)(x) - __kaslr_offset_phys + __kaslr_offset))
119 #define __kernel_pa(x) ((unsigned long)(x) - __kaslr_offset + __kaslr_offset_phys)
120 #define __identity_va(x) ((void *)((unsigned long)(x) + __identity_base))
121 #define __identity_pa(x) ((unsigned long)(x) - __identity_base)
122
intersects(unsigned long addr0,unsigned long size0,unsigned long addr1,unsigned long size1)123 static inline bool intersects(unsigned long addr0, unsigned long size0,
124 unsigned long addr1, unsigned long size1)
125 {
126 return addr0 + size0 > addr1 && addr1 + size1 > addr0;
127 }
128 #endif /* __ASSEMBLY__ */
129 #endif /* BOOT_BOOT_H */
130