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Diffstat (limited to 'arch/s390/include/asm/setup.h')
| -rw-r--r-- | arch/s390/include/asm/setup.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h new file mode 100644 index 000000000..1d66016f4 --- /dev/null +++ b/arch/s390/include/asm/setup.h @@ -0,0 +1,148 @@ +/* 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/const.h> +#include <uapi/asm/setup.h> + +#define EP_OFFSET 0x10008 +#define EP_STRING "S390EP" +#define PARMAREA 0x10400 +#define PARMAREA_END 0x11000 + +/* + * 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_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_PID_MASK _AC(0xffffffff, UL) + +/* Offsets to entry points in kernel/head.S */ + +#define STARTUP_NORMAL_OFFSET 0x10000 +#define STARTUP_KDUMP_OFFSET 0x10010 + +/* Offsets to parameters in kernel/head.S */ + +#define IPL_DEVICE_OFFSET 0x10400 +#define INITRD_START_OFFSET 0x10408 +#define INITRD_SIZE_OFFSET 0x10410 +#define OLDMEM_BASE_OFFSET 0x10418 +#define OLDMEM_SIZE_OFFSET 0x10420 +#define COMMAND_LINE_OFFSET 0x10480 + +#ifndef __ASSEMBLY__ + +#include <asm/lowcore.h> +#include <asm/types.h> + +#define IPL_DEVICE (*(unsigned long *) (IPL_DEVICE_OFFSET)) +#define INITRD_START (*(unsigned long *) (INITRD_START_OFFSET)) +#define INITRD_SIZE (*(unsigned long *) (INITRD_SIZE_OFFSET)) +#define OLDMEM_BASE (*(unsigned long *) (OLDMEM_BASE_OFFSET)) +#define OLDMEM_SIZE (*(unsigned long *) (OLDMEM_SIZE_OFFSET)) +#define COMMAND_LINE ((char *) (COMMAND_LINE_OFFSET)) + +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_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) + +#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 (IPL_DEVICE_OFFSET) +#define INITRD_START (INITRD_START_OFFSET) +#define INITRD_SIZE (INITRD_SIZE_OFFSET) +#define OLDMEM_BASE (OLDMEM_BASE_OFFSET) +#define OLDMEM_SIZE (OLDMEM_SIZE_OFFSET) +#define COMMAND_LINE (COMMAND_LINE_OFFSET) + +#endif /* __ASSEMBLY__ */ +#endif /* _ASM_S390_SETUP_H */ |