1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef BOOT_BOOT_H
 3#define BOOT_BOOT_H
 4
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 5void startup_kernel(void);
 6void detect_memory(void);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 7void store_ipl_parmblock(void);
 
 
 8void setup_boot_command_line(void);
 9void parse_boot_command_line(void);
10void setup_memory_end(void);
11void verify_facilities(void);
12void print_missing_facilities(void);
 
13void print_pgm_check_info(void);
14unsigned long get_random_base(unsigned long safe_addr);
 
 
 
 
 
 
 
15
16extern int kaslr_enabled;
17extern const char kernel_version[];
 
 
 
 
 
 
 
 
 
 
 
 
 
18
19unsigned long read_ipl_report(unsigned long safe_offset);
20
 
 
 
 
 
 
21#endif /* BOOT_BOOT_H */

  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 */