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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/s390/boot/boot.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef BOOT_BOOT_H

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#define BOOT_BOOT_H

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#include <linux/types.h>

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#define IPL_START	0x200

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#ifndef __ASSEMBLER__

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#include <linux/printk.h>

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#include <asm/physmem_info.h>

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#include <asm/stacktrace.h>

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struct vmlinux_info {

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	unsigned long entry;

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	unsigned long image_size;	/* does not include .bss */

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	unsigned long bss_size;		/* uncompressed image .bss size */

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	unsigned long bootdata_off;

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	unsigned long bootdata_size;

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	unsigned long bootdata_preserved_off;

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	unsigned long bootdata_preserved_size;

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	unsigned long got_start;

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	unsigned long got_end;

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	unsigned long amode31_size;

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	unsigned long init_mm_off;

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	unsigned long swapper_pg_dir_off;

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	unsigned long invalid_pg_dir_off;

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	unsigned long alt_instructions;

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	unsigned long alt_instructions_end;

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#ifdef CONFIG_KASAN

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	unsigned long kasan_early_shadow_page_off;

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	unsigned long kasan_early_shadow_pte_off;

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	unsigned long kasan_early_shadow_pmd_off;

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	unsigned long kasan_early_shadow_pud_off;

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	unsigned long kasan_early_shadow_p4d_off;

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#endif

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};

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void startup_kernel(void);

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unsigned long detect_max_physmem_end(void);

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void detect_physmem_online_ranges(unsigned long max_physmem_end);

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void physmem_set_usable_limit(unsigned long limit);

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void physmem_reserve(enum reserved_range_type type, unsigned long addr, unsigned long size);

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void physmem_free(enum reserved_range_type type);

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/* for continuous/multiple allocations per type */

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unsigned long physmem_alloc_or_die(enum reserved_range_type type, unsigned long size,

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				   unsigned long align);

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unsigned long physmem_alloc(enum reserved_range_type type, unsigned long size,

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			    unsigned long align, bool die_on_oom);

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/* for single allocations, 1 per type */

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unsigned long physmem_alloc_range(enum reserved_range_type type, unsigned long size,

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				  unsigned long align, unsigned long min, unsigned long max,

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				  bool die_on_oom);

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unsigned long get_physmem_alloc_pos(void);

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void dump_physmem_reserved(void);

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bool ipl_report_certs_intersects(unsigned long addr, unsigned long size,

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				 unsigned long *intersection_start);

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bool is_ipl_block_dump(void);

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void store_ipl_parmblock(void);

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int read_ipl_report(void);

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void save_ipl_cert_comp_list(void);

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void setup_boot_command_line(void);

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void parse_boot_command_line(void);

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void verify_facilities(void);

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void print_missing_facilities(void);

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void sclp_early_setup_buffer(void);

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void alt_debug_setup(char *str);

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void do_pgm_check(struct pt_regs *regs);

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unsigned long randomize_within_range(unsigned long size, unsigned long align,

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				     unsigned long min, unsigned long max);

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void setup_vmem(unsigned long kernel_start, unsigned long kernel_end, unsigned long asce_limit);

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int __printf(1, 2) boot_printk(const char *fmt, ...);

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void print_stacktrace(unsigned long sp);

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void error(char *m);

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int get_random(unsigned long limit, unsigned long *value);

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void boot_rb_dump(void);

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void __noreturn jump_to_kernel(psw_t *psw);

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#ifndef boot_fmt

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#define boot_fmt(fmt)	fmt

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#endif

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#define boot_emerg(fmt, ...)	boot_printk(KERN_EMERG boot_fmt(fmt), ##__VA_ARGS__)

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#define boot_alert(fmt, ...)	boot_printk(KERN_ALERT boot_fmt(fmt), ##__VA_ARGS__)

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#define boot_crit(fmt, ...)	boot_printk(KERN_CRIT boot_fmt(fmt), ##__VA_ARGS__)

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#define boot_err(fmt, ...)	boot_printk(KERN_ERR boot_fmt(fmt), ##__VA_ARGS__)

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#define boot_warn(fmt, ...)	boot_printk(KERN_WARNING boot_fmt(fmt), ##__VA_ARGS__)

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#define boot_notice(fmt, ...)	boot_printk(KERN_NOTICE boot_fmt(fmt), ##__VA_ARGS__)

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#define boot_info(fmt, ...)	boot_printk(KERN_INFO boot_fmt(fmt), ##__VA_ARGS__)

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#define boot_debug(fmt, ...)	boot_printk(KERN_DEBUG boot_fmt(fmt), ##__VA_ARGS__)

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#define boot_panic(...) do {				\

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	boot_emerg(__VA_ARGS__);			\

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	print_stacktrace(current_frame_address());	\

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	boot_emerg(" -- System halted\n");		\

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	disabled_wait();				\

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} while (0)

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extern struct machine_info machine;

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extern int boot_console_loglevel;

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extern bool boot_ignore_loglevel;

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/* Symbols defined by linker scripts */

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extern const char kernel_version[];

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extern unsigned long memory_limit;

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extern unsigned long vmalloc_size;

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extern int vmalloc_size_set;

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extern char __boot_data_start[], __boot_data_end[];

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extern char __boot_data_preserved_start[], __boot_data_preserved_end[];

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extern char __vmlinux_relocs_64_start[], __vmlinux_relocs_64_end[];

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extern char _decompressor_syms_start[], _decompressor_syms_end[];

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extern char _stack_start[], _stack_end[];

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extern char _end[], _decompressor_end[];

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extern unsigned char _compressed_start[];

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extern unsigned char _compressed_end[];

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extern struct vmlinux_info _vmlinux_info;

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#define vmlinux _vmlinux_info

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#define __lowcore_pa(x)		((unsigned long)(x) % sizeof(struct lowcore))

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#define __abs_lowcore_pa(x)	(((unsigned long)(x) - __abs_lowcore) % sizeof(struct lowcore))

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#define __kernel_va(x)		((void *)((unsigned long)(x) - __kaslr_offset_phys + __kaslr_offset))

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#define __kernel_pa(x)		((unsigned long)(x) - __kaslr_offset + __kaslr_offset_phys)

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#define __identity_va(x)	((void *)((unsigned long)(x) + __identity_base))

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#define __identity_pa(x)	((unsigned long)(x) - __identity_base)

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static inline bool intersects(unsigned long addr0, unsigned long size0,

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			      unsigned long addr1, unsigned long size1)

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{

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	return addr0 + size0 > addr1 && addr1 + size1 > addr0;

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}

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#endif /* __ASSEMBLER__ */

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#endif /* BOOT_BOOT_H */

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