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/* SPDX-License-Identifier: GPL-2.0 */
/*
 *  S390 version
 *    Copyright IBM Corp. 1999, 2010
 */
#ifndef _ASM_S390_SETUP_H
#define _ASM_S390_SETUP_H

#include <linux/const.h>
#include <uapi/asm/setup.h>


#define PARMAREA		0x10400

/*
 * Machine features detected in early.c
 */

#define MACHINE_FLAG_VM		_BITUL(0)
#define MACHINE_FLAG_KVM	_BITUL(1)
#define MACHINE_FLAG_LPAR	_BITUL(2)
#define MACHINE_FLAG_DIAG9C	_BITUL(3)
#define MACHINE_FLAG_ESOP	_BITUL(4)
#define MACHINE_FLAG_IDTE	_BITUL(5)
#define MACHINE_FLAG_DIAG44	_BITUL(6)
#define MACHINE_FLAG_EDAT1	_BITUL(7)
#define MACHINE_FLAG_EDAT2	_BITUL(8)
#define MACHINE_FLAG_LPP	_BITUL(9)
#define MACHINE_FLAG_TOPOLOGY	_BITUL(10)
#define MACHINE_FLAG_TE		_BITUL(11)
#define MACHINE_FLAG_TLB_LC	_BITUL(12)
#define MACHINE_FLAG_VX		_BITUL(13)
#define MACHINE_FLAG_TLB_GUEST	_BITUL(14)
#define MACHINE_FLAG_NX		_BITUL(15)
#define MACHINE_FLAG_GS		_BITUL(16)
#define MACHINE_FLAG_SCC	_BITUL(17)

#define LPP_MAGIC		_BITUL(31)
#define LPP_PFAULT_PID_MASK	_AC(0xffffffff, UL)

#ifndef __ASSEMBLY__

#include <asm/lowcore.h>
#include <asm/types.h>

#define IPL_DEVICE        (*(unsigned long *)  (0x10400))
#define INITRD_START      (*(unsigned long *)  (0x10408))
#define INITRD_SIZE       (*(unsigned long *)  (0x10410))
#define OLDMEM_BASE	  (*(unsigned long *)  (0x10418))
#define OLDMEM_SIZE	  (*(unsigned long *)  (0x10420))
#define COMMAND_LINE      ((char *)            (0x10480))

extern int memory_end_set;
extern unsigned long memory_end;
extern unsigned long max_physmem_end;

extern void detect_memory_memblock(void);

#define MACHINE_IS_VM		(S390_lowcore.machine_flags & MACHINE_FLAG_VM)
#define MACHINE_IS_KVM		(S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
#define MACHINE_IS_LPAR		(S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)

#define MACHINE_HAS_DIAG9C	(S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
#define MACHINE_HAS_ESOP	(S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
#define MACHINE_HAS_IDTE	(S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
#define MACHINE_HAS_DIAG44	(S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44)
#define MACHINE_HAS_EDAT1	(S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
#define MACHINE_HAS_EDAT2	(S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
#define MACHINE_HAS_LPP		(S390_lowcore.machine_flags & MACHINE_FLAG_LPP)
#define MACHINE_HAS_TOPOLOGY	(S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
#define MACHINE_HAS_TE		(S390_lowcore.machine_flags & MACHINE_FLAG_TE)
#define MACHINE_HAS_TLB_LC	(S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
#define MACHINE_HAS_VX		(S390_lowcore.machine_flags & MACHINE_FLAG_VX)
#define MACHINE_HAS_TLB_GUEST	(S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
#define MACHINE_HAS_NX		(S390_lowcore.machine_flags & MACHINE_FLAG_NX)
#define MACHINE_HAS_GS		(S390_lowcore.machine_flags & MACHINE_FLAG_GS)
#define MACHINE_HAS_SCC		(S390_lowcore.machine_flags & MACHINE_FLAG_SCC)

/*
 * Console mode. Override with conmode=
 */
extern unsigned int console_mode;
extern unsigned int console_devno;
extern unsigned int console_irq;

extern char vmhalt_cmd[];
extern char vmpoff_cmd[];

#define CONSOLE_IS_UNDEFINED	(console_mode == 0)
#define CONSOLE_IS_SCLP		(console_mode == 1)
#define CONSOLE_IS_3215		(console_mode == 2)
#define CONSOLE_IS_3270		(console_mode == 3)
#define CONSOLE_IS_VT220	(console_mode == 4)
#define CONSOLE_IS_HVC		(console_mode == 5)
#define SET_CONSOLE_SCLP	do { console_mode = 1; } while (0)
#define SET_CONSOLE_3215	do { console_mode = 2; } while (0)
#define SET_CONSOLE_3270	do { console_mode = 3; } while (0)
#define SET_CONSOLE_VT220	do { console_mode = 4; } while (0)
#define SET_CONSOLE_HVC		do { console_mode = 5; } while (0)

#define NSS_NAME_SIZE	8
extern char kernel_nss_name[];

#ifdef CONFIG_PFAULT
extern int pfault_init(void);
extern void pfault_fini(void);
#else /* CONFIG_PFAULT */
#define pfault_init()		({-1;})
#define pfault_fini()		do { } while (0)
#endif /* CONFIG_PFAULT */

#ifdef CONFIG_VMCP
void vmcp_cma_reserve(void);
#else
static inline void vmcp_cma_reserve(void) { }
#endif

void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);

void cmma_init(void);
void cmma_init_nodat(void);

extern void (*_machine_restart)(char *command);
extern void (*_machine_halt)(void);
extern void (*_machine_power_off)(void);

#else /* __ASSEMBLY__ */

#define IPL_DEVICE        0x10400
#define INITRD_START      0x10408
#define INITRD_SIZE       0x10410
#define OLDMEM_BASE	  0x10418
#define OLDMEM_SIZE	  0x10420
#define COMMAND_LINE      0x10480

#endif /* __ASSEMBLY__ */
#endif /* _ASM_S390_SETUP_H */

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