65912a84c0
Move initrd if the bitmap of the bootmem allocator would overwrite it. In addition this patch sets the default size and address of the initrd to 0. Therefore all boot loaders must set the initrd size and address correctly. This is especially relevant for ftp boot via HMC/SE, where this change requires a special patch file entry in the .ins file which sets these two values contained at address 0x10408 and 0x10410. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
134 lines
3.2 KiB
C
134 lines
3.2 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 (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
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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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#ifdef __KERNEL__
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#include <asm/types.h>
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#define PARMAREA 0x10400
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#define COMMAND_LINE_SIZE 896
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#define MEMORY_CHUNKS 16 /* max 0x7fff */
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#define IPL_PARMBLOCK_ORIGIN 0x2000
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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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/*
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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_IS_VM (machine_flags & 1)
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#define MACHINE_IS_P390 (machine_flags & 4)
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#define MACHINE_HAS_MVPG (machine_flags & 16)
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#define MACHINE_HAS_IDTE (machine_flags & 128)
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#ifndef __s390x__
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#define MACHINE_HAS_IEEE (machine_flags & 2)
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#define MACHINE_HAS_CSP (machine_flags & 8)
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#define MACHINE_HAS_DIAG44 (1)
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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_DIAG44 (machine_flags & 32)
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#endif /* __s390x__ */
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#define MACHINE_HAS_SCLP (!MACHINE_IS_P390)
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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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#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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struct ipl_list_header {
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u32 length;
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u8 reserved[3];
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u8 version;
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} __attribute__((packed));
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struct ipl_block_fcp {
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u32 length;
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u8 pbt;
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u8 reserved1[322-1];
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u16 devno;
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u8 reserved2[4];
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u64 wwpn;
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u64 lun;
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u32 bootprog;
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u8 reserved3[12];
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u64 br_lba;
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u32 scp_data_len;
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u8 reserved4[260];
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u8 scp_data[];
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} __attribute__((packed));
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struct ipl_parameter_block {
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union {
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u32 length;
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struct ipl_list_header header;
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} hdr;
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struct ipl_block_fcp fcp;
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} __attribute__((packed));
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#define IPL_MAX_SUPPORTED_VERSION (0)
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#define IPL_TYPE_FCP (0)
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/*
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* IPL validity flags and parameters as detected in head.S
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*/
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extern u32 ipl_parameter_flags;
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extern u16 ipl_devno;
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#define IPL_DEVNO_VALID (ipl_parameter_flags & 1)
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#define IPL_PARMBLOCK_VALID (ipl_parameter_flags & 2)
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#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
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IPL_PARMBLOCK_ORIGIN)
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#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.length)
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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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