mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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53492b1de4
This adds hugetlbfs support on System z, using both hardware large page support if available and software large page emulation on older hardware. Shared (large) page tables are implemented in software emulation mode, by using page->index of the first tail page from a compound large page to store page table information. Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/*
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* include/asm-s390/setup.h
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*
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* S390 version
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* Copyright IBM Corp. 1999,2006
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*/
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#ifndef _ASM_S390_SETUP_H
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#define _ASM_S390_SETUP_H
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#define COMMAND_LINE_SIZE 896
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#ifdef __KERNEL__
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#include <asm/types.h>
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#define PARMAREA 0x10400
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#define MEMORY_CHUNKS 16 /* max 0x7fff */
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#ifndef __ASSEMBLY__
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#ifndef __s390x__
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#define IPL_DEVICE (*(unsigned long *) (0x10404))
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#define INITRD_START (*(unsigned long *) (0x1040C))
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#define INITRD_SIZE (*(unsigned long *) (0x10414))
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#else /* __s390x__ */
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#define IPL_DEVICE (*(unsigned long *) (0x10400))
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#define INITRD_START (*(unsigned long *) (0x10408))
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#define INITRD_SIZE (*(unsigned long *) (0x10410))
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#endif /* __s390x__ */
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#define COMMAND_LINE ((char *) (0x10480))
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#define CHUNK_READ_WRITE 0
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#define CHUNK_READ_ONLY 1
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struct mem_chunk {
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unsigned long addr;
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unsigned long size;
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unsigned long type;
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};
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extern struct mem_chunk memory_chunk[];
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extern unsigned long real_memory_size;
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#ifdef CONFIG_S390_SWITCH_AMODE
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extern unsigned int switch_amode;
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#else
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#define switch_amode (0)
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#endif
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#ifdef CONFIG_S390_EXEC_PROTECT
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extern unsigned int s390_noexec;
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#else
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#define s390_noexec (0)
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#endif
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/*
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* Machine features detected in head.S
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*/
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extern unsigned long machine_flags;
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#define MACHINE_FLAG_VM (1UL << 0)
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#define MACHINE_FLAG_IEEE (1UL << 1)
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#define MACHINE_FLAG_P390 (1UL << 2)
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#define MACHINE_FLAG_CSP (1UL << 3)
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#define MACHINE_FLAG_MVPG (1UL << 4)
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#define MACHINE_FLAG_DIAG44 (1UL << 5)
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#define MACHINE_FLAG_IDTE (1UL << 6)
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#define MACHINE_FLAG_DIAG9C (1UL << 7)
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#define MACHINE_FLAG_MVCOS (1UL << 8)
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#define MACHINE_FLAG_KVM (1UL << 9)
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#define MACHINE_FLAG_HPAGE (1UL << 10)
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#define MACHINE_FLAG_PFMF (1UL << 11)
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#define MACHINE_IS_VM (machine_flags & MACHINE_FLAG_VM)
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#define MACHINE_IS_KVM (machine_flags & MACHINE_FLAG_KVM)
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#define MACHINE_IS_P390 (machine_flags & MACHINE_FLAG_P390)
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#define MACHINE_HAS_DIAG9C (machine_flags & MACHINE_FLAG_DIAG9C)
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#ifndef __s390x__
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#define MACHINE_HAS_IEEE (machine_flags & MACHINE_FLAG_IEEE)
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#define MACHINE_HAS_CSP (machine_flags & MACHINE_FLAG_CSP)
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#define MACHINE_HAS_IDTE (0)
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#define MACHINE_HAS_DIAG44 (1)
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#define MACHINE_HAS_MVPG (machine_flags & MACHINE_FLAG_MVPG)
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#define MACHINE_HAS_MVCOS (0)
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#define MACHINE_HAS_HPAGE (0)
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#define MACHINE_HAS_PFMF (0)
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#else /* __s390x__ */
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#define MACHINE_HAS_IEEE (1)
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#define MACHINE_HAS_CSP (1)
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#define MACHINE_HAS_IDTE (machine_flags & MACHINE_FLAG_IDTE)
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#define MACHINE_HAS_DIAG44 (machine_flags & MACHINE_FLAG_DIAG44)
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#define MACHINE_HAS_MVPG (1)
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#define MACHINE_HAS_MVCOS (machine_flags & MACHINE_FLAG_MVCOS)
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#define MACHINE_HAS_HPAGE (machine_flags & MACHINE_FLAG_HPAGE)
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#define MACHINE_HAS_PFMF (machine_flags & MACHINE_FLAG_PFMF)
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#endif /* __s390x__ */
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#define MACHINE_HAS_SCLP (!MACHINE_IS_P390)
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#define ZFCPDUMP_HSA_SIZE (32UL<<20)
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/*
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* Console mode. Override with conmode=
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*/
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extern unsigned int console_mode;
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extern unsigned int console_devno;
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extern unsigned int console_irq;
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extern char vmhalt_cmd[];
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extern char vmpoff_cmd[];
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#define CONSOLE_IS_UNDEFINED (console_mode == 0)
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#define CONSOLE_IS_SCLP (console_mode == 1)
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#define CONSOLE_IS_3215 (console_mode == 2)
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#define CONSOLE_IS_3270 (console_mode == 3)
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#define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
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#define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
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#define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
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#define NSS_NAME_SIZE 8
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extern char kernel_nss_name[];
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#else /* __ASSEMBLY__ */
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#ifndef __s390x__
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#define IPL_DEVICE 0x10404
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#define INITRD_START 0x1040C
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#define INITRD_SIZE 0x10414
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#else /* __s390x__ */
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#define IPL_DEVICE 0x10400
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#define INITRD_START 0x10408
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#define INITRD_SIZE 0x10410
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#endif /* __s390x__ */
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#define COMMAND_LINE 0x10480
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#endif /* __ASSEMBLY__ */
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#endif /* __KERNEL__ */
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#endif /* _ASM_S390_SETUP_H */
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