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 <asm/physmem_info.h> |
12 | |
13 | struct machine_info { |
14 | unsigned char has_edat1 : 1; |
15 | unsigned char has_edat2 : 1; |
16 | unsigned char has_nx : 1; |
17 | }; |
18 | |
19 | struct vmlinux_info { |
20 | unsigned long default_lma; |
21 | unsigned long entry; |
22 | unsigned long image_size; /* does not include .bss */ |
23 | unsigned long bss_size; /* uncompressed image .bss size */ |
24 | unsigned long bootdata_off; |
25 | unsigned long bootdata_size; |
26 | unsigned long bootdata_preserved_off; |
27 | unsigned long bootdata_preserved_size; |
28 | #ifdef CONFIG_PIE_BUILD |
29 | unsigned long dynsym_start; |
30 | unsigned long rela_dyn_start; |
31 | unsigned long rela_dyn_end; |
32 | #else |
33 | unsigned long got_start; |
34 | unsigned long got_end; |
35 | #endif |
36 | unsigned long amode31_size; |
37 | unsigned long init_mm_off; |
38 | unsigned long swapper_pg_dir_off; |
39 | unsigned long invalid_pg_dir_off; |
40 | #ifdef CONFIG_KASAN |
41 | unsigned long kasan_early_shadow_page_off; |
42 | unsigned long kasan_early_shadow_pte_off; |
43 | unsigned long kasan_early_shadow_pmd_off; |
44 | unsigned long kasan_early_shadow_pud_off; |
45 | unsigned long kasan_early_shadow_p4d_off; |
46 | #endif |
47 | }; |
48 | |
49 | void startup_kernel(void); |
50 | unsigned long detect_max_physmem_end(void); |
51 | void detect_physmem_online_ranges(unsigned long max_physmem_end); |
52 | void physmem_set_usable_limit(unsigned long limit); |
53 | void physmem_reserve(enum reserved_range_type type, unsigned long addr, unsigned long size); |
54 | void physmem_free(enum reserved_range_type type); |
55 | /* for continuous/multiple allocations per type */ |
56 | unsigned long physmem_alloc_top_down(enum reserved_range_type type, unsigned long size, |
57 | unsigned long align); |
58 | /* for single allocations, 1 per type */ |
59 | unsigned long physmem_alloc_range(enum reserved_range_type type, unsigned long size, |
60 | unsigned long align, unsigned long min, unsigned long max, |
61 | bool die_on_oom); |
62 | unsigned long get_physmem_alloc_pos(void); |
63 | bool ipl_report_certs_intersects(unsigned long addr, unsigned long size, |
64 | unsigned long *intersection_start); |
65 | bool is_ipl_block_dump(void); |
66 | void store_ipl_parmblock(void); |
67 | int read_ipl_report(void); |
68 | void save_ipl_cert_comp_list(void); |
69 | void setup_boot_command_line(void); |
70 | void parse_boot_command_line(void); |
71 | void verify_facilities(void); |
72 | void print_missing_facilities(void); |
73 | void sclp_early_setup_buffer(void); |
74 | void print_pgm_check_info(void); |
75 | unsigned long randomize_within_range(unsigned long size, unsigned long align, |
76 | unsigned long min, unsigned long max); |
77 | void setup_vmem(unsigned long asce_limit); |
78 | void __printf(1, 2) decompressor_printk(const char *fmt, ...); |
79 | void print_stacktrace(unsigned long sp); |
80 | void error(char *m); |
81 | |
82 | extern struct machine_info machine; |
83 | |
84 | /* Symbols defined by linker scripts */ |
85 | extern const char kernel_version[]; |
86 | extern unsigned long memory_limit; |
87 | extern unsigned long vmalloc_size; |
88 | extern int vmalloc_size_set; |
89 | extern char __boot_data_start[], __boot_data_end[]; |
90 | extern char __boot_data_preserved_start[], __boot_data_preserved_end[]; |
91 | extern char __vmlinux_relocs_64_start[], __vmlinux_relocs_64_end[]; |
92 | extern char _decompressor_syms_start[], _decompressor_syms_end[]; |
93 | extern char _stack_start[], _stack_end[]; |
94 | extern char _end[], _decompressor_end[]; |
95 | extern unsigned char _compressed_start[]; |
96 | extern unsigned char _compressed_end[]; |
97 | extern struct vmlinux_info _vmlinux_info; |
98 | #define vmlinux _vmlinux_info |
99 | |
100 | #define __abs_lowcore_pa(x) (((unsigned long)(x) - __abs_lowcore) % sizeof(struct lowcore)) |
101 | |
102 | static inline bool intersects(unsigned long addr0, unsigned long size0, |
103 | unsigned long addr1, unsigned long size1) |
104 | { |
105 | return addr0 + size0 > addr1 && addr1 + size1 > addr0; |
106 | } |
107 | #endif /* __ASSEMBLY__ */ |
108 | #endif /* BOOT_BOOT_H */ |
109 | |