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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a0443fbb46
Now it is possible to specify additional kernel parameters on the IPL command line using the IPL PARM option. If the Linux system is already running, the new reipl sysfs attribute 'parm' can be used to change kernel parameters for the next reboot. Examples: IPL C PARM dasd=1234 root=/dev/dasda1 IPL 1234 PARM savesys=mylnxnss echo "init=/bin/bash" > /sys/firmware/reipl/ccw/parm Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
142 lines
3.8 KiB
C
142 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 1024
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#define ARCH_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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