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/*
* include/asm-s390/setup.h
*
* S390 version
* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
*/
#ifndef _ASM_S390_SETUP_H
#define _ASM_S390_SETUP_H
#ifdef __KERNEL__
#include <asm/types.h>
#define PARMAREA 0x10400
#define COMMAND_LINE_SIZE 896
#define MEMORY_CHUNKS 16 /* max 0x7fff */
#define IPL_PARMBLOCK_ORIGIN 0x2000
#ifndef __ASSEMBLY__
#ifndef __s390x__
#define IPL_DEVICE (*(unsigned long *) (0x10404))
#define INITRD_START (*(unsigned long *) (0x1040C))
#define INITRD_SIZE (*(unsigned long *) (0x10414))
#else /* __s390x__ */
#define IPL_DEVICE (*(unsigned long *) (0x10400))
#define INITRD_START (*(unsigned long *) (0x10408))
#define INITRD_SIZE (*(unsigned long *) (0x10410))
#endif /* __s390x__ */
#define COMMAND_LINE ((char *) (0x10480))
/*
* Machine features detected in head.S
*/
extern unsigned long machine_flags;
#define MACHINE_IS_VM (machine_flags & 1)
#define MACHINE_IS_P390 (machine_flags & 4)
#define MACHINE_HAS_MVPG (machine_flags & 16)
#define MACHINE_HAS_IDTE (machine_flags & 128)
#ifndef __s390x__
#define MACHINE_HAS_IEEE (machine_flags & 2)
#define MACHINE_HAS_CSP (machine_flags & 8)
#define MACHINE_HAS_DIAG44 (1)
#else /* __s390x__ */
#define MACHINE_HAS_IEEE (1)
#define MACHINE_HAS_CSP (1)
#define MACHINE_HAS_DIAG44 (machine_flags & 32)
#endif /* __s390x__ */
#define MACHINE_HAS_SCLP (!MACHINE_IS_P390)
/*
* 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 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)
struct ipl_list_hdr {
u32 len;
u8 reserved1[3];
u8 version;
u32 blk0_len;
u8 pbt;
u8 flags;
u16 reserved2;
} __attribute__((packed));
struct ipl_block_fcp {
u8 reserved1[313-1];
u8 opt;
u8 reserved2[3];
u16 reserved3;
u16 devno;
u8 reserved4[4];
u64 wwpn;
u64 lun;
u32 bootprog;
u8 reserved5[12];
u64 br_lba;
u32 scp_data_len;
u8 reserved6[260];
u8 scp_data[];
} __attribute__((packed));
struct ipl_block_ccw {
u8 load_param[8];
u8 reserved1[84];
u8 reserved2[2];
u16 devno;
u8 vm_flags;
u8 reserved3[3];
u32 vm_parm_len;
} __attribute__((packed));
struct ipl_parameter_block {
struct ipl_list_hdr hdr;
union {
struct ipl_block_fcp fcp;
struct ipl_block_ccw ccw;
} ipl_info;
} __attribute__((packed));
#define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
sizeof(struct ipl_block_fcp))
#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
sizeof(struct ipl_block_ccw))
#define IPL_MAX_SUPPORTED_VERSION (0)
/*
* IPL validity flags and parameters as detected in head.S
*/
extern u32 ipl_flags;
extern u16 ipl_devno;
void do_reipl(void);
enum {
IPL_DEVNO_VALID = 1,
IPL_PARMBLOCK_VALID = 2,
};
#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
IPL_PARMBLOCK_ORIGIN)
#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len)
#else /* __ASSEMBLY__ */
#ifndef __s390x__
#define IPL_DEVICE 0x10404
#define INITRD_START 0x1040C
#define INITRD_SIZE 0x10414
#else /* __s390x__ */
#define IPL_DEVICE 0x10400
#define INITRD_START 0x10408
#define INITRD_SIZE 0x10410
#endif /* __s390x__ */
#define COMMAND_LINE 0x10480
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_S390_SETUP_H */
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