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 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
 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_top_down(enum reserved_range_type type, unsigned long size,
 52				     unsigned long align);
 53/* for single allocations, 1 per type */
 54unsigned long physmem_alloc_range(enum reserved_range_type type, unsigned long size,
 55				  unsigned long align, unsigned long min, unsigned long max,
 56				  bool die_on_oom);
 57unsigned long get_physmem_alloc_pos(void);
 58bool ipl_report_certs_intersects(unsigned long addr, unsigned long size,
 59				 unsigned long *intersection_start);
 60bool is_ipl_block_dump(void);
 61void store_ipl_parmblock(void);
 62int read_ipl_report(void);
 63void save_ipl_cert_comp_list(void);
 64void setup_boot_command_line(void);
 65void parse_boot_command_line(void);
 
 66void verify_facilities(void);
 67void print_missing_facilities(void);
 68void sclp_early_setup_buffer(void);
 69void print_pgm_check_info(void);
 70unsigned long randomize_within_range(unsigned long size, unsigned long align,
 71				     unsigned long min, unsigned long max);
 72void setup_vmem(unsigned long kernel_start, unsigned long kernel_end, unsigned long asce_limit);
 73void __printf(1, 2) boot_printk(const char *fmt, ...);
 74void print_stacktrace(unsigned long sp);
 75void error(char *m);
 76int get_random(unsigned long limit, unsigned long *value);
 77
 78extern struct machine_info machine;
 79
 80/* Symbols defined by linker scripts */
 81extern const char kernel_version[];
 82extern unsigned long memory_limit;
 83extern unsigned long vmalloc_size;
 84extern int vmalloc_size_set;
 85extern char __boot_data_start[], __boot_data_end[];
 86extern char __boot_data_preserved_start[], __boot_data_preserved_end[];
 87extern char __vmlinux_relocs_64_start[], __vmlinux_relocs_64_end[];
 88extern char _decompressor_syms_start[], _decompressor_syms_end[];
 89extern char _stack_start[], _stack_end[];
 90extern char _end[], _decompressor_end[];
 91extern unsigned char _compressed_start[];
 92extern unsigned char _compressed_end[];
 93extern struct vmlinux_info _vmlinux_info;
 94
 95#define vmlinux _vmlinux_info
 96
 97#define __lowcore_pa(x)		((unsigned long)(x) % sizeof(struct lowcore))
 98#define __abs_lowcore_pa(x)	(((unsigned long)(x) - __abs_lowcore) % sizeof(struct lowcore))
 99#define __kernel_va(x)		((void *)((unsigned long)(x) - __kaslr_offset_phys + __kaslr_offset))
100#define __kernel_pa(x)		((unsigned long)(x) - __kaslr_offset + __kaslr_offset_phys)
101#define __identity_va(x)	((void *)((unsigned long)(x) + __identity_base))
102#define __identity_pa(x)	((unsigned long)(x) - __identity_base)
103
104static inline bool intersects(unsigned long addr0, unsigned long size0,
105			      unsigned long addr1, unsigned long size1)
106{
107	return addr0 + size0 > addr1 && addr1 + size1 > addr0;
108}
109#endif /* __ASSEMBLY__ */
110#endif /* BOOT_BOOT_H */

 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 */