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
13struct machine_info {
14	unsigned char has_edat1 : 1;
15	unsigned char has_edat2 : 1;
16	unsigned char has_nx : 1;
17};
18
19struct 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
49void startup_kernel(void);
50unsigned long detect_max_physmem_end(void);
51void detect_physmem_online_ranges(unsigned long max_physmem_end);
52void physmem_set_usable_limit(unsigned long limit);
53void physmem_reserve(enum reserved_range_type type, unsigned long addr, unsigned long size);
54void physmem_free(enum reserved_range_type type);
55/* for continuous/multiple allocations per type */
56unsigned long physmem_alloc_top_down(enum reserved_range_type type, unsigned long size,
57				     unsigned long align);
58/* for single allocations, 1 per type */
59unsigned 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);
62unsigned long get_physmem_alloc_pos(void);
63bool ipl_report_certs_intersects(unsigned long addr, unsigned long size,
64				 unsigned long *intersection_start);
65bool is_ipl_block_dump(void);
66void store_ipl_parmblock(void);
67int read_ipl_report(void);
68void save_ipl_cert_comp_list(void);
69void setup_boot_command_line(void);
70void parse_boot_command_line(void);
71void verify_facilities(void);
72void print_missing_facilities(void);
73void sclp_early_setup_buffer(void);
74void print_pgm_check_info(void);
75unsigned long randomize_within_range(unsigned long size, unsigned long align,
76				     unsigned long min, unsigned long max);
77void setup_vmem(unsigned long asce_limit);
78void __printf(1, 2) decompressor_printk(const char *fmt, ...);
79void print_stacktrace(unsigned long sp);
80void error(char *m);
81
82extern struct machine_info machine;
83
84/* Symbols defined by linker scripts */
85extern const char kernel_version[];
86extern unsigned long memory_limit;
87extern unsigned long vmalloc_size;
88extern int vmalloc_size_set;
89extern char __boot_data_start[], __boot_data_end[];
90extern char __boot_data_preserved_start[], __boot_data_preserved_end[];
91extern char __vmlinux_relocs_64_start[], __vmlinux_relocs_64_end[];
92extern char _decompressor_syms_start[], _decompressor_syms_end[];
93extern char _stack_start[], _stack_end[];
94extern char _end[], _decompressor_end[];
95extern unsigned char _compressed_start[];
96extern unsigned char _compressed_end[];
97extern 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
102static 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