[linux-block.git] / arch / s390 / boot / boot.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef BOOT_BOOT_H
#define BOOT_BOOT_H

#include <linux/types.h>

#define IPL_START	0x200

#ifndef __ASSEMBLY__

#include <asm/physmem_info.h>

struct machine_info {
	unsigned char has_edat1 : 1;
	unsigned char has_edat2 : 1;
	unsigned char has_nx : 1;
};

struct vmlinux_info {
	unsigned long entry;
	unsigned long image_size;	/* does not include .bss */
	unsigned long bss_size;		/* uncompressed image .bss size */
	unsigned long bootdata_off;
	unsigned long bootdata_size;
	unsigned long bootdata_preserved_off;
	unsigned long bootdata_preserved_size;
	unsigned long got_start;
	unsigned long got_end;
	unsigned long amode31_size;
	unsigned long init_mm_off;
	unsigned long swapper_pg_dir_off;
	unsigned long invalid_pg_dir_off;
	unsigned long alt_instructions;
	unsigned long alt_instructions_end;
#ifdef CONFIG_KASAN
	unsigned long kasan_early_shadow_page_off;
	unsigned long kasan_early_shadow_pte_off;
	unsigned long kasan_early_shadow_pmd_off;
	unsigned long kasan_early_shadow_pud_off;
	unsigned long kasan_early_shadow_p4d_off;
#endif
};

void startup_kernel(void);
unsigned long detect_max_physmem_end(void);
void detect_physmem_online_ranges(unsigned long max_physmem_end);
void physmem_set_usable_limit(unsigned long limit);
void physmem_reserve(enum reserved_range_type type, unsigned long addr, unsigned long size);
void physmem_free(enum reserved_range_type type);
/* for continuous/multiple allocations per type */
unsigned long physmem_alloc_top_down(enum reserved_range_type type, unsigned long size,
				     unsigned long align);
/* for single allocations, 1 per type */
unsigned long physmem_alloc_range(enum reserved_range_type type, unsigned long size,
				  unsigned long align, unsigned long min, unsigned long max,
				  bool die_on_oom);
unsigned long get_physmem_alloc_pos(void);
bool ipl_report_certs_intersects(unsigned long addr, unsigned long size,
				 unsigned long *intersection_start);
bool is_ipl_block_dump(void);
void store_ipl_parmblock(void);
int read_ipl_report(void);
void save_ipl_cert_comp_list(void);
void setup_boot_command_line(void);
void parse_boot_command_line(void);
void verify_facilities(void);
void print_missing_facilities(void);
void sclp_early_setup_buffer(void);
void print_pgm_check_info(void);
unsigned long randomize_within_range(unsigned long size, unsigned long align,
				     unsigned long min, unsigned long max);
void setup_vmem(unsigned long kernel_start, unsigned long kernel_end, unsigned long asce_limit);
void __printf(1, 2) boot_printk(const char *fmt, ...);
void print_stacktrace(unsigned long sp);
void error(char *m);
int get_random(unsigned long limit, unsigned long *value);

extern struct machine_info machine;

/* Symbols defined by linker scripts */
extern const char kernel_version[];
extern unsigned long memory_limit;
extern unsigned long vmalloc_size;
extern int vmalloc_size_set;
extern char __boot_data_start[], __boot_data_end[];
extern char __boot_data_preserved_start[], __boot_data_preserved_end[];
extern char __vmlinux_relocs_64_start[], __vmlinux_relocs_64_end[];
extern char _decompressor_syms_start[], _decompressor_syms_end[];
extern char _stack_start[], _stack_end[];
extern char _end[], _decompressor_end[];
extern unsigned char _compressed_start[];
extern unsigned char _compressed_end[];
extern struct vmlinux_info _vmlinux_info;

#define vmlinux _vmlinux_info

#define __lowcore_pa(x)		((unsigned long)(x) % sizeof(struct lowcore))
#define __abs_lowcore_pa(x)	(((unsigned long)(x) - __abs_lowcore) % sizeof(struct lowcore))
#define __kernel_va(x)		((void *)((unsigned long)(x) - __kaslr_offset_phys + __kaslr_offset))
#define __kernel_pa(x)		((unsigned long)(x) - __kaslr_offset + __kaslr_offset_phys)
#define __identity_va(x)	((void *)((unsigned long)(x) + __identity_base))
#define __identity_pa(x)	((unsigned long)(x) - __identity_base)

static inline bool intersects(unsigned long addr0, unsigned long size0,
			      unsigned long addr1, unsigned long size1)
{
	return addr0 + size0 > addr1 && addr1 + size1 > addr0;
}
#endif /* __ASSEMBLY__ */
#endif /* BOOT_BOOT_H */
Commit	Line	Data
8f75582a VG	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	#ifndef BOOT_BOOT_H
	3	#define BOOT_BOOT_H
	4
256d78d0	5	#include <linux/types.h>
9a78c70a	6
834979c2 HC	7	#define IPL_START 0x200
	8
	9	#ifndef __ASSEMBLY__
	10
f913a660 VG	11	#include <asm/physmem_info.h>
f913a660 VG	12
bd50b743 AG	13	struct machine_info {
	14	unsigned char has_edat1 : 1;
	15	unsigned char has_edat2 : 1;
	16	unsigned char has_nx : 1;
	17	};
	18
9c3205b2	19	struct vmlinux_info {
bb1520d5	20	unsigned long entry;
9c3205b2 AG	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;
3334fda6 AG	27	unsigned long got_start;
3334fda6 AG	28	unsigned long got_end;
9c3205b2	29	unsigned long amode31_size;
bb1520d5 AG	30	unsigned long init_mm_off;
	31	unsigned long swapper_pg_dir_off;
	32	unsigned long invalid_pg_dir_off;
7f9d8599 SS	33	unsigned long alt_instructions;
7f9d8599 SS	34	unsigned long alt_instructions_end;
557b1970 VG	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
9c3205b2 AG	42	};
9c3205b2 AG	43
8f75582a	44	void startup_kernel(void);
f913a660 VG	45	unsigned long detect_max_physmem_end(void);
f913a660 VG	46	void detect_physmem_online_ranges(unsigned long max_physmem_end);
8c37cb7d	47	void physmem_set_usable_limit(unsigned long limit);
f913a660 VG	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_top_down(enum reserved_range_type type, unsigned long size,
	52	unsigned long align);
	53	/* for single allocations, 1 per type */
	54	unsigned 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);
6e259bc5	57	unsigned long get_physmem_alloc_pos(void);
f913a660 VG	58	bool ipl_report_certs_intersects(unsigned long addr, unsigned long size,
f913a660 VG	59	unsigned long *intersection_start);
73045a08	60	bool is_ipl_block_dump(void);
49698745	61	void store_ipl_parmblock(void);
f913a660 VG	62	int read_ipl_report(void);
f913a660 VG	63	void save_ipl_cert_comp_list(void);
49698745	64	void setup_boot_command_line(void);
b5e80459	65	void parse_boot_command_line(void);
868202ce	66	void verify_facilities(void);
6d85dac2	67	void print_missing_facilities(void);
f1d3c532	68	void sclp_early_setup_buffer(void);
724dc336	69	void print_pgm_check_info(void);
6e259bc5 VG	70	unsigned long randomize_within_range(unsigned long size, unsigned long align,
6e259bc5 VG	71	unsigned long min, unsigned long max);
c98d2eca	72	void setup_vmem(unsigned long kernel_start, unsigned long kernel_end, unsigned long asce_limit);
bfda6108	73	void __printf(1, 2) boot_printk(const char *fmt, ...);
f913a660	74	void print_stacktrace(unsigned long sp);
9c3205b2	75	void error(char *m);
c98d2eca	76	int get_random(unsigned long limit, unsigned long *value);
b2d24b97	77
bd50b743 AG	78	extern struct machine_info machine;
bd50b743 AG	79
7fadcc07	80	/* Symbols defined by linker scripts */
6abe2819	81	extern const char kernel_version[];
73045a08	82	extern unsigned long memory_limit;
0c4f2623	83	extern unsigned long vmalloc_size;
73045a08	84	extern int vmalloc_size_set;
7fadcc07 AE	85	extern char __boot_data_start[], __boot_data_end[];
7fadcc07 AE	86	extern char __boot_data_preserved_start[], __boot_data_preserved_end[];
4394a507	87	extern char __vmlinux_relocs_64_start[], __vmlinux_relocs_64_end[];
7fadcc07	88	extern char _decompressor_syms_start[], _decompressor_syms_end[];
256d78d0	89	extern char _stack_start[], _stack_end[];
f913a660	90	extern char _end[], _decompressor_end[];
9c3205b2 AG	91	extern unsigned char _compressed_start[];
	92	extern unsigned char _compressed_end[];
	93	extern struct vmlinux_info _vmlinux_info;
5ade5be4	94
9c3205b2	95	#define vmlinux _vmlinux_info
9641b8cc	96
5ade5be4	97	#define __lowcore_pa(x) ((unsigned long)(x) % sizeof(struct lowcore))
2154e0b3	98	#define __abs_lowcore_pa(x) (((unsigned long)(x) - __abs_lowcore) % sizeof(struct lowcore))
c98d2eca AG	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)
2154e0b3	103
f913a660 VG	104	static 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	}
834979c2	109	#endif /* __ASSEMBLY__ */
8f75582a	110	#endif /* BOOT_BOOT_H */