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/* SPDX-License-Identifier: GPL-2.0 */
/*
* S390 version
* Copyright IBM Corp. 1999, 2017
*/
#ifndef _ASM_S390_SETUP_H
#define _ASM_S390_SETUP_H
#include <linux/bits.h>
#include <uapi/asm/setup.h>
#include <linux/build_bug.h>
#define PARMAREA 0x10400
#define COMMAND_LINE_SIZE CONFIG_COMMAND_LINE_SIZE
/*
* Machine features detected in early.c
*/
#define MACHINE_FLAG_VM BIT(0)
#define MACHINE_FLAG_KVM BIT(1)
#define MACHINE_FLAG_LPAR BIT(2)
#define MACHINE_FLAG_DIAG9C BIT(3)
#define MACHINE_FLAG_ESOP BIT(4)
#define MACHINE_FLAG_IDTE BIT(5)
#define MACHINE_FLAG_EDAT1 BIT(7)
#define MACHINE_FLAG_EDAT2 BIT(8)
#define MACHINE_FLAG_TOPOLOGY BIT(10)
#define MACHINE_FLAG_TE BIT(11)
#define MACHINE_FLAG_TLB_LC BIT(12)
#define MACHINE_FLAG_TLB_GUEST BIT(14)
#define MACHINE_FLAG_NX BIT(15)
#define MACHINE_FLAG_GS BIT(16)
#define MACHINE_FLAG_SCC BIT(17)
#define MACHINE_FLAG_PCI_MIO BIT(18)
#define MACHINE_FLAG_RDP BIT(19)
#define LPP_MAGIC BIT(31)
#define LPP_PID_MASK _AC(0xffffffff, UL)
/* Offsets to entry points in kernel/head.S */
#define STARTUP_NORMAL_OFFSET 0x10000
#define STARTUP_KDUMP_OFFSET 0x10010
#define LEGACY_COMMAND_LINE_SIZE 896
#ifndef __ASSEMBLY__
#include <asm/lowcore.h>
#include <asm/types.h>
struct parmarea {
unsigned long ipl_device; /* 0x10400 */
unsigned long initrd_start; /* 0x10408 */
unsigned long initrd_size; /* 0x10410 */
unsigned long oldmem_base; /* 0x10418 */
unsigned long oldmem_size; /* 0x10420 */
unsigned long kernel_version; /* 0x10428 */
unsigned long max_command_line_size; /* 0x10430 */
char pad1[0x10480-0x10438]; /* 0x10438 - 0x10480 */
char command_line[COMMAND_LINE_SIZE]; /* 0x10480 */
};
extern struct parmarea parmarea;
extern unsigned int zlib_dfltcc_support;
#define ZLIB_DFLTCC_DISABLED 0
#define ZLIB_DFLTCC_FULL 1
#define ZLIB_DFLTCC_DEFLATE_ONLY 2
#define ZLIB_DFLTCC_INFLATE_ONLY 3
#define ZLIB_DFLTCC_FULL_DEBUG 4
extern unsigned long ident_map_size;
extern unsigned long max_mappable;
/* The Write Back bit position in the physaddr is given by the SLPC PCI */
extern unsigned long mio_wb_bit_mask;
#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_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
#define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
#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_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)
#define MACHINE_HAS_PCI_MIO (S390_lowcore.machine_flags & MACHINE_FLAG_PCI_MIO)
#define MACHINE_HAS_RDP (S390_lowcore.machine_flags & MACHINE_FLAG_RDP)
/*
* Console mode. Override with conmode=
*/
extern unsigned int console_mode;
extern unsigned int console_devno;
extern unsigned int console_irq;
#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)
#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);
extern void (*_machine_restart)(char *command);
extern void (*_machine_halt)(void);
extern void (*_machine_power_off)(void);
extern unsigned long __kaslr_offset;
static inline unsigned long kaslr_offset(void)
{
return __kaslr_offset;
}
extern int __kaslr_enabled;
static inline int kaslr_enabled(void)
{
if (IS_ENABLED(CONFIG_RANDOMIZE_BASE))
return __kaslr_enabled;
return 0;
}
struct oldmem_data {
unsigned long start;
unsigned long size;
};
extern struct oldmem_data oldmem_data;
static __always_inline u32 gen_lpswe(unsigned long addr)
{
BUILD_BUG_ON(addr > 0xfff);
return 0xb2b20000 | addr;
}
#endif /* __ASSEMBLY__ */
#endif /* _ASM_S390_SETUP_H */
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